Pultruded Epoxy Products Applications

Unsaturated polyester resin is the most common resin which is used in fiberglass pultruded products, and then epoxy resin. It is mainly used for products with high requirements on mechanical properties and heat resistance. Besides those two types of resin, vinyl ester resin, phenolic resin and  thermal plastic resin are also used during production. The resin requirements in pultrusion technology is: low viscosity, easy to saturate the reinforced material;  fast curing to adapt to the requirements of continuous forming production; good adhesion, curing shrinkage rate. Flexibility is good, the product is not easy to have cracks. Epoxy resin pultruded profiles are important type of glass fiber reinforced plastic material, and they have excellent strength properties.

Applications of fiberglass pultruded epoxy resin products:

1). Electrical engineering is the most widely used area currently, and it is very important development. Such as the transformer air catheter positioning rod, high voltage insulator core, high-voltage cable protection tube, cable rack, insulative ladder, insulating rod, pole, rail guard board, cable distributing frame, motor spare parts etc.

2). chemical anti-corrosion field is the fastest developing field in recent years. Typical products such as supporting structure of pipe network, pumping rod, downhole pressure pipeline, wastewater treatment equipment,, baffle of chemical industry, petroleum, chemical industry, papermaking, metallurgy and other factories in the railings, stair and platform railing, the grid floor.

3). Building construction, the structure is mainly used in the light structure, the upper structure of the high-rise structure or special purpose structure. Such as the activity of the housing structure, doors and windows structure with profile, truss, light bridge, railing, tent, suspended ceiling, structure, etc.

4). Sports and entertainment areas such as fiberglass fishing rod, hockey stick, ski pole, pole vault, bow etc.

5). Transportation areas such as automotive shelves, truck frame, refrigerated car, car spring board, luggage rack, insurance, deck, electric train track board, etc.

6). The energy field is mainly used in the solar collector, the wind turbine blade, the oil well and so on.

7). Aerospace applications such as aircraft and spacecraft antenna insulating tube, the spacecraft motor parts, fiberglass I beam, trough shaped beam and square beam, fiberglass rods, etc.

Source: www.unicomposite.com

Types Of FRP Tubes

There are many types of fiberglass tubes, today we'll introduce three types of tubes from aspects of production process, cross sections and raw materials.

1. According to the production process, frp tubes can be divided into pultruded tubes, pulwinding tubes, filament winding tubes, roller, etc. Filament winding pipe is widely used in the pipeline, and it has the advantages of high transverse strength, longitudinal strength, the disadvantage is it can't be produced continuously. For pultruded tubes, we can add the enhancement layer to increase the transverse strength, and the surface finish is very smooth, they can be produced continuously , and products can be customized according to customer's demand, the production efficiency is very high high, the disadvantage is that too large product is difficult to achieve, and it has high requirements of the machine and process. And fiberglass tubes with small and medium size have wide application.

2. According to the cross section shapes, fiberglass tubes can be divided into round tubes, square tubes, fiberglass rectangular tubes, etc, and our factory is able to manufacture different tubes at customer's request. 

3. According to the raw materials, now the most common resin is polyester resin tubes, there are vinyl ester resin, epoxy, phenolic, and other fiberglass tubes, different raw materials will produce tubes with different physical, mechanical and chemical properties. And according to the specific use of the environment, we are able to do customized production and processing of glass fiber tube to meet customer requirements.

As the fiberglass products have more and more applications in our life, we can see more fiberglass products in daily life. FRP tube as a very important branch of fiberglass products, it gets more recognition in different industries because of its various performance characteristics.

Source: www.unicomposite.com

Mechanical Properties Of Glass Fiber

Properties of glass fiber reinforced plastic equipment, especially its physics, mechanical properties and glass fiber and its products performance and glass fiber and its products of performance, varieties, specifications have a direct relationship. In chemical corrosion resistance, because the glass fiber is superior to synthetic resin, so in addition to the individual case, mainly depends on the corrosion resistance of the resin.

Mechanical properties: glass fiber is characterized by high tensile strength and specific strength.

It is generally believed that the tensile strength of glass fiber is related to the diameter and the length of the sample. Usually it is natural or chemical fiber high 5~30 times, 2 times higher than that of steel.

The proportion of glass fiber is small, is 2.5~2.7, is bigger than the natural or chemical fiber, is about the steel 1/3.

Glass fiber is an excellent elastic material, the stress and strain diagram is a straight line. The maximum elongation at break is related to the diameter of the fiber, but generally not more than 5%.

The modulus of elasticity is equal to that of pure Al. Only the 1/3~1/6 of the steel, which can be described as the biggest weakness of the glass fiber.

Glass fiber is more brittle and durable.

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Pultrusion Resin For Fiberglass Windows And Doors

Fiberglass pultruded window and door profiles are not the same as many general FRP products, they have multi-cavity and very thin wall thickness. Today we'll talk about the basic requirements of the pultrusion resin for the multi-cavity and thin-walled profile in high speed production:

(1) high reactivity;

(2) high glass temperature;

(3) the speed of saturation should be as high as possible;

(4) the proper viscosity characteristic.

Low reactive resin has slow speed reaction, even in the pultrusion mold for very short residence time and is unable to complete curing reaction, cementitious area will be too long, production difficulties: to regulate the reaction activity of the matrix resin, selection of appropriate initiator or choose a variety of initiator trigger.

Isophthalic resin glass transition temperature is high, the gelation time is short and the gel strength is higher, easily impregnated fiber and moderate viscosity (500 ~ 600 centipoises), packing is not easy to sink, very suitable for production of multi cavity thin wall material with special shape.

In order to improve the pultrusion speed and shorten the time of gelation, we should use the multi - level initiating system caused by low temperature, medium temperature and high temperature so that the resin matrix can be initiated at a lower temperature. In order to guarantee the inner and outer resin matrix can simultaneously cure, eliminate the crack and the profile bending phenomenon due to the curing time of the inside and outside resin matrix, adopt this system. It can also shorten the time of gelation. To improve the strength of the gel, and reduce the occurrence of the accident rate. The surface quality of the profiles can be improved by improving the tension speed and increasing the degree of curing.

                                                                                                     Source: www.unicomposite.com

Carbon Fiber Material Characteristics

There are two common types of carbon fiber products production process, pultrusion and roller. Carbon fiber materials and other strengthening materials comparision: (1) tensile strength: carbon fiber tensile strength is about 10 times than steel. (2) the tensile modulus of the carbon fiber composites is higher than that of the steel, but the tensile modulus of the aramid fiber and glass fiber composites is only half and 1/4 of the steel. (3): fatigue strength of carbon fiber pultruded and aramid fiber composite material fatigue strength is higher than that of a high strength. The fatigue limit of the metal materials is only 30% ~ 40% of the static load, under the action of alternating stress.. Due to the fiber and the matrix composite can ease the crack extension, and possibility of the existence of the internal force redistribution of fiber, composite fatigue limit is higher, about static load strength of 70% ~ 80%, and in front of the destruction of a significant signs of deformation. (4) weight: about 1/5 of the steel. (5) the comparison with carbon fiber board: carbon fiber sheet can be pasted on the structural surface of various shapes, and the plate is more suitable for the surface of a rule member. In addition, because of the adhesive strength of the adhesive layer, the amount of resin is more thick and the adhesive strength of the adhesive layer is better than that of the concrete interface.

                                                                                   Source: www.unicomposite.com

The Relationship Between Pultrusion And Molded Craft

In many different kinds of fiberglass products, it has the highest similarity between molding FRP grating and pultrusion product. It’s different from molded craft, while produce FRP grating by pultrusion technology. FRP pultrusion technology is a assembly by bars, but the molding craft is not. You get the only product ,while using the only mould.

The same features between mold craft and FRP pultrusin technology:

They are both the FRP production craft, also the product produced by those two ways can be combined. For example, when we install the operating platform, the key bars are FRP grating, but minor bars are pultrusion technology product, such as FRP  holder, FRP square tube and channel, bars and so on. In a word, the most similarity between them is supplement each other.

The differents features between molded craft and FRP pultrusin technology:

Relative to the similarity, the difference will be more.

1.The feature

pultrusion technology: fast production, easy operation, good variability(just change the mould, while produce the new production). As a result, the kind of pultrusion technology product is more than molding craft product.

Molded craft: the weakness is mainly aritificial operation, a waste of time, the mold can’t be changed, single product shape. But the advantage is stable property and durability.

2.Theory of production

Pultrusion technology product is produced by semi-automatic equipment, fast and easy operation, while the molding craft bars is made by aritificial operation, a waste of time and complex operation.

3. Usage

they have different range and occasion of usage. For example, FRP bridge is made of pultrusion technology bars, but fiberglass molded grating can’t achieve it.

                                                                                                 Source: www.unicomposite.com

Pultrusion Process Parameter Control Element

Because the pultrusion process parameters to pull the thermosetting resin, by some complex factors which occurred in the mold of the constraints, and also by mutual influence between the other parameters, therefore in the pultrusion process, polymerization reaction of raw materials, and it is more difficult to accurately forecast.

At present, FRP pultrusion mould used in the monitoring and control of the sensing element has: temperature sensor, pressure sensor and the dielectric sensor three of the sesensors, must first solve the problem of wear resistant pultrusion. In addition, temperature,volume fraction of FRP mould, and the pulling speed, also will have a certain impact on the pultrusion molding process parameter sensor.

The current commonly used FRP pultrusion equipment, temperature sensing detection ofthe elements, often along the fiber direction, the surface area and placed in the forming mold, and the pressure sensing element, the middle position is often placed at the entrance of the pultrusion mould (usually pultrusion mould length 1000mm). The surface tension type pressure sensing element, often coated with chromium layer, in order to improve its performance of pultruded profiles wear resistance.

                                                                                                Source: www.unicomposite.com

FRP Products Fire Retardant Standards

Some fiberglass pultruded profiles applications require the fire retardant property, and different fire retardant rates have different functions. Two types of North America and Europe fire retardant standards are listed below:

1. ASTM E 84 

It is standard test method for surface burning characteristics of of building materials. 

The flame spread index and smoke developed index values obtained by the ASTM E 84 test are used by code officials and regulatory agencies in the acceptance of interior finish materials for various applications. The most widely accepted classification system is described in the National Fire Protection Association publication NFPA 101 Life Safety Code 

1. 2006 International Building Code 

a. Section 803 Wall and Ceiling Finishes, Paragraph 803.1 General states, “Interior wall and ceiling finishes shall be classified in accordance with ASTM E- 84.Such interior finish materials shall be grouped in the following classes in accordance with their flame spread and smoke-developed indexes. 

i. Class A: Flame Spread 0-25; smoke-developed 0-450 ii. Class B: Flame Spread 26-75; smoke-developed 0-450 iii. Class C: Flame Spread 76-200; smoke-developed 0-450 

Class A,B, and C correspond to type I, II, and III respectively in other codes such as SBCCI, BOCA, ICBO. They do not preclude a material being otherwise classified by the authority of jurisdiction.

2. UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing is a plastics flammability standard released by Underwriters Laboratories of the USA.

The standard classifies plastics according to how they burn in various orientations and thicknesses. From lowest (least flame-retardant) to highest (most flame-retardant), the classifications are:

HB: slow burning on a horizontal specimen; burning rate < 76 mm/min for thickness < 3 mm and burning stops before 100 mm

V-2 burning stops within 30 seconds on a vertical specimen; drips of flaming particles are allowed.

V-1: burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.

V-0: burning stops within 10 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.

5VB: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole.

5VA: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole

Tests are generally conducted on a 5" x 1/2" (12.7 cm x 1.27 cm) specimen of the minimum approved thickness. For 5VA and 5VB ratings, tests are performed on both bar and plaque specimens, and the flame ignition source is approximately five times as severe as that used for testing the other materials.

There are other classifications that apply to low density foam materials (HF-1, HF-2, HBF) and thin films (VTM-0, VTM-1, VTM-2).

HF-1: burning stops within 2 seconds; afterglow less than 30s; no burning drips allowed.

HF-2: burning stops within 3 seconds; afterglow less than 30s; burning drips allowed.   From Widipedia

                                                                                                         Source: www.unicomposite.com

Types Of FRP Gratings

According to the forming process, fiberglass gratings can be divided into pultruded fiberglass gratings and molded fiberglass gratings.

Pultruded Gratings:

Pultruded FRP gratings are assembled by three parts:

Bearing profile: it is mainly composed of pultruded "I" or "T" profile.

The connection profile: its role is to connect the bearing section, and it is mainly used inpultrusion rod or a variety of special stick

The spacer profile: its role in the regulation of the gap and fixed fiberglass gratings, it is mainly used for pultrusion of bar

With pultruded profile "I" or "T" profile bearing rod, with pultruded rod or bar as various shaped bar with adhesive, according to a certain pitch of the bar and the bearing rod are connected together to form the FRP gratings.

Molded FRP gratings: laying glass fiber roving in large metal mold casting with thermosetting resin, and a cold curing molding, mold release can be obtained after the molding of FRP gratings. In the production of molded grating, we can seal the surface of gratings wtih upper plate structure to form gratings at lower height.

The FRP gratings color: color is compatible with the resins and resin paste to achieve, so the color is not on the surface, so as to keep the lasting color. Colorful FRP gratings can improve your production environment, change the invariable gloomy situation corrosive environment and make your factory modern.

                                                                                              Source: www.unicomposite.com

How To Control Noise Of Pultrusion Machine

How to control moise in the transmission path

1. in the overall layout and reasonable design. In the arrangement of factories and mines of graphic design, noise source of a workshop or device for pultrusion hydraulic press workshop, laboratory, far away from the requirement of office quiet, or the high noiseequipment should be concentrated, which is convenient to control.

2. with a barrier to prevent the noise propagation, or the use of natural terrain such as hills,slopes, forest grass, tall buildings or afraid of noisy or adding structures etc..

3. the use of sound source directivity characteristics to control noise. If the high pressure boiler exhaust steam, blast furnace ventilation, oxygen making machine exhaust outlet towards the wilderness or the sky, to reduce the environmental impact of.

To reduce the noise source

1 improve transformation of pultrusion hydraulic machine and choose low noise hydraulic machine.

2 to improve the processing and assembling precision machinery, mechanical vibration andnoise generated by the friction reduction.

3 for high pressure, high speed air flow to reduce the pressure and flow rate, or to change the airflow nozzle shape.

Protection of workers

1 personal protection for workers, such as wear earplugs, earmuffs helmet noise prevention activities.

2 take workers rotation operation, shorten the workers entered the high noise environmentworking time.

                                                                                      Source: www.unicomposite.com

Fiberglass Pultruded Road Sign And Electric Sign

Fiberglass pultruded electric telecommunication cable warning pile

Sign application: indication and warning signs of electric power,communication, gas, water, railway geographic pipeline path channel. Instructions fordowntown, scenic area, green belt on both sides of the path, bushes, pipe jacking pipeline.

Fiberglass pultruded road sign pile are 400mm buried in the soil. Composite materials (not recycling), oxidation resistance, good strength, service life of up to 50 years, the surface of the text is a concave text coloring treatment, were marked as a path toward the top of the pipeline, the pipeline direction clear away. A pipeline buried depth marking, warnings and ownership units contact telephone number.

1 high strength, the product uses the model of unsaturated resin materials, by high temperature and pressing.

2 Impact and wear resistance. High temperature resistance, corrosion resistance.

3 Beautiful appearance, the product can be made into various colors, fonts, pattern clear,obvious warning and can beautify the city environment.

4. lLght weight, convenient transportation and installation, can greatly reduce labor andreduce labor intensity.

5. Anti theft, the fiberglass material unrecycable .

                                                                                            Source: www.unicomposite.com

FRP Rock Bolt Introduction

FRP rock bolt is mainly composed of fiberglass pultruded rod, nylon nut and nylon tray. It is easy to cut, it won't damage the cutting machine and mining machine. It's safety, anti-static, fire-retardant, no spark, insulation, corrosion resistant, durable, strong binding force, and the resin anchor agent, concrete with strong, thermal expansion coefficient close to cement.

About the technology of fiberglass pultruded bolt, at present a large number of PET modified resin are used, and continuous glass fiber reinforcement has high strength, good resistance to corrosion, and they are widely used.The molding process of glass fiber arranged longitudinally to maximize the advantages of glass fiber with high tensile strength, and meet the requirement of the tensile strength of the rod body. Torsional reinforcement by dipping glass fiber bundle is wound on the rod body made of a left-handed direction around, distribution, not only can enhance the torsional strength of the rod body, the bolt installation to fully mixing resin anchoring agent, effectively will anchor and drilling hole in coal mine wall cemented together, get larger anchoring force.The pultruded anchor rod body length is set according to the need, it has many advantages of high strength, large anchoring force, light weight, convenient installation,corrosion resistance, easy to cut, and is suitable for coal mine reinforcement.

                                                                                                                  Source: www.unicomposite.com

Fiberglass Sheet Piles Information

Fiberglass pultruded composite piles include round/octagonal pipes and sheet piles. Round/octagonal pipes general diameters are from 8” to 14”, the length can be 4ft~20ft even 30ft.

Traditional pile materials are steel and aluminum. Fiberglass piles have advantages of resistant to insect, corrosion, light weight, fast transportation and easy installation, weatherproof, etc and it can last many years, so it is very cost effective in the long run.

There are three types of composite pultruded sheet piles, light piles, heavy duty sheet piles and super heavy duty piles. The length, width, wall thickness and materials will decide the strength of sheet pile. Common shapes of sheet piles are Z-pile and box pile. 

Manufactures use polyester resin and vinyl ester resin when producing fiberglass pultruded sheet piles. In the pultruded sheet pile installation, besides sheet piles, accessories such as caps, wales, tie backs are necessary.

                                                                                                      Source: www.unicomposite.com

FRP Pultruded Production Process Development And Applications

FRP pultruded production process in American has experienced decades of development. The late 70's for pultrusion process application of synthetic resin, glassfibers and fabrics and other raw material one after another, so that the rapid development of the pultrusion process. The 80's USA pultruded FRP products annually at a rate of 12.5%, the main raw material used in section for glass fiber roving, fiberglass continuous felt and all kinds of glass fiber fabric, synthetic resin and corresponding additives, fillers,pigments etc. The technological process of roving, fabric preform - resin impregnatedcontinuous curing - cooling - fixed length cutting - product packaging. 

FRP profiles compared with common structure steel products have advantages of  high strength, lightweight, corrosion resistance, insulation and heat insulation, etc. Here are some examples of pultruded FRP profiles as structural bearing parts used in chemical corrosion industries. 1, the purification of cobalt electrolytic workshop section operating platform; system operation platform 2, purification of nickel electrolysis; Zhanqiao; roof and electrolytic tank bracket; 3,zinc leaching workshop operation platform, walkway platform; 4, aluminum electrolytic workshop anode precipitation tank support.

                                                                           Source: www.unicomposite.com

Release Agent Advantages And Selection In Pultrusion Process

The release agent in the pultrusion process has many advantages:

1.it's easily dispersed in the resin;

2.it will help clean pultrusion mould; 

3.to protect them against thecorrosion of metal mold; 

4.in reducing the resistance, reduce the pultrusion die loss andimprove the production efficiency; 

5.it can reduce the surface tension of resin mixture,reduce the viscosity of the resin, improve on the enhancement of invasive packing material,resin, improved liquidity resin; 

6.an auxiliary arc surface quality improved global andcomponent, make product surface smooth; 

7.does not affect the curing characteristics ofthe resin, without changing the application period mixed resin, does not affect the physical and mechanical properties of products, does not affect the products of weathering resistance.

The release agent selection:

The release agent is to be directly added to the resin, it is compatible with lresin, but that is not compatible with the cured resin, under certain processing conditions of temperature, diffusion from the matrix resin pultruded into the curing product surface, forming a layer of isolation membrane between the mold and product, to release effect.

The release agent are generally phosphate, phosphoric acid, stearic acid salt eggs,triethanolamine oil etc..

With stripping effect of zinc stearate is better. Because the resin viscosity, directly addingpowdered zinc stearate is difficult to stir, and stearic ester zinc loose, large volume, air entrainment is more, resulting in more resin bubble. So before you use it, usually inaddition of crosslinking agent zinc stearate, make it become the batter evenly, and thenadded to the resin. There was no significant effect of using zinc stearate as releasing agenton the product color, curing rate and viscosity of resin.

                                                                                       Source: www.unicomposite.com

FRP Rebar Introduction And Development

Fiberglass rebar production uses pultrusion molding process. It's mainly longitudinal enhancement. Fiber content is 50% ~ 65%. In the past 10 years, fiberglass reinforced rebar has effectively replaced steel rebar in many projects, especially with the price advantage, its application is increasing. 

Because the fiberglass reinforced rebar structure and corrosion resistance, which is especially suitable for underground engineering, offshore concrete structures and area. For some special building facilities, such as magnetic resonance imaging room in the hospital or by radio frequency technology to identify prepaid customers highway toll stationchannel, FRP rebar is the best choice. The FRP rebar has excellent electromagnetic wave permeability. In addition, the light weight property (approximately 1 / 4 of steel rebar) and adiabatic also makes it more and more popular.

Fibergglass reinforced rebar is generally made of E glass fiber and vinyl ester resin. There are also examples of the use of ECR glass fiber. In addition to vinyl ester, polyester, epoxy and phenolic resin also can be used for production.

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FRP Pultruded Profile Cracks Reason

FRP pultruded profile cracks, including appearance and inner crack. It can appear in any goods and any moment.The reason is mainly because of the crack onset exothermic shorter episodes of heat stress. There are many manufacturers also agreed on this point. But at present domestic but also difficult to find a better way to eliminate thermal stress. Although the appropriate adjustment of mould temperature and pulling speed can temporarily gentle this question, but as environmental conditions change and some unknown reason, the crack will reappear. Cracks sometimes suddenly appear in a very normal circumstances would make you impossible to guard against. Just add a few (the amount of resin 2%-5%), that have a significant effect. Because the amount is not added, the influence on thefunctionality of the product is very small, to enhance the effect of certain function can. In addition to reduce cracking, it also has to add product appearance luster, make the finished color more uniform strengths. In this component in the formulation, can reduce thereject rate to a great extent, make the production more smoothly. DP anti crackingbrightening powder to avoid cracking mechanism of finished products as follows: because itdoes not dissolve in the resin, so when it is slack in the resin, resin composition insuccessive phase size is about lax chondrules 50 - 100 m, in these chondrules and lax in a liquid resin minority. When the resin is heated, the successive phases and phase are to attack the swell and lax. In the heat to 120-140%, the crosslinked resin curing and shorten the beginning episodes, resin and lax phase chondrules within also attack curing. But nowthe slack phase pellets still follow the temperature increases continue to swell. Thus in theslack phase chondrules and one phase at the interface of a stress and strain. As the temperature continues to rise, the successive phase crosslinking continue to attack and tends to end, along with the successive phase to shorten this process. So at the interface of a stress and strain more. When the stress and strain to a certain level, slack phasespherules within the crosslinked resin network attack the micro crack and expansion in the chondrules within, so that the stress and strain in jail at the interface. Through such amechanism, to avoid the crack appears successively finished main skeleton network.

                                                                                                  Source: www.unicomposite.com

CRTM (Continuous Resin Transfer Molding Pultrusion Process)

Continuous Resin Transfer Molding Pultrusion Process is developed in late of 1970. Glass fiber goes through yarn guide and pre forming system into a continuous resin transfer mould to stabilize the pressure and flow rate, injection of special resin, glass fiber to fully soak and remove air bubbles, curing mold fully infiltrated and bubble free glass fiber into the mold in the traction machine under the inside, so as to realize the continuous resin transfer molding (Continuous Resin Transfer Molding Pultrusion Process CRTM) orinjection pultrusion. This method is not used in the raw materials of polymer, but two or more than two kinds of liquid monomer or prepolymer, in certain proportion respectively added to the mixing head, evenly mixed under pressure, immediately injected into theclosed mold, curing in the mold, forming products. Due to the materials used are liquid, withsmaller pressure that can quickly fill the die cavity, and therefore reduces the clamping force and the mold cost, is particularly suitable for the production of large area articles.Reaction injection molding required components by mixed, immediately quick reaction, and the material can be cured to release degree. Therefore, to use special materials and formulations, sometimes products also need heat treatment to improve its performance.The key to forming equipment is the design of the structure, mixing head componentsaccurately measure and transport. In addition, the raw material storage tank and mold temperature control is also very important.

Continuous resin transfer molding pultrusion process has the following advantages:

1. Glass fiber fully saturated, FRP products in the production will have little micro bubble content and excellent electrical properties;

2. For the resin system and the atmosphere easy isolation, performance of the product is not easy to be influenced by the environment;

3. Resin for injection maintains the same characteristics;

4. Easy to get transparent products, the product defects (such as inclusion, knotyarn) are easy to find and eliminate.

                                                                                            Source: www.unicomposite.com

Fiberglass Pultruded Profile Samples With Peel Ply

Our factory has tested two kinds of profiles with peel ply. We use peel ply with the highest heating temperature 220℃. The 1st one is fiberglass pultruded u profile peel ply off and it's painted directly, the 2nd sample is frp u profile peel ply off but with puttying before painting. Test result is: there are peel ply stripes on the surface of the 1st fiberglass u profile sample, but the surface finish of the 2nd sample with puttying before painting process looks much smooth and noble.

                                                                                                   Source: www.unicomposite.com

Unicomposite Fiberglass Pultruded Decking System

Fiberglass Pultruded Decking/Panel

Unicomposite Carbon Fiber Tubes

Composite carbon fiber tubes include pultrusion process and roller, our engineer will choose the most suitable production technology. Please click www.unicomposite.com to get more details.

Fiberglass Pultruded Profiles Of Unicomposite Technology

 

                     Fiberglass Pultruded Channels

                         Pultruded cable protection profile

                                       From: www.unicomposite.com

Fiberglass pultruded profiles for fencing project

There are many materials for our choice when we are going to purchase and install fence. Some general fence materials include: wood, steel, bamboo and fiberglass. 

And prices are various based on different material and design. Wooden fence is relatively less expensive, but high quality cedar fence price is also expensive. Vinyl and fiberglass fence has even color and looks more beautiful and noble. The joint of wood fence is more easily so the installation of small simple fence is very convenient. Vinyl fence post strength is not as good as fiberglass post, so sometimes aluminium profile will be used as internal reinfrocemed profiles.

Fiberglass pultruded fence has been used in commerical and residential application. Most fiberglass fencing project of Unicomposite Technology is for commerial application because of it's obevious advantages: light weight, never rust, non-corrosion, lower matintenance, etc.

The standard fiberglass fence post dimensions are: 50*50mm, 100*100mm fiberglass pultruded square tubes, 50mm~300mm diameter fiberglass round tubes, and the general wall thickness of fence post is 3.0~12.0mm according to different applications. For the main fence panel profiles, you can choose from fiberglass round tubes, rectangular tubes, fiberglass solid rods, fiberglass gratings, flat bars, etc. Please click fiberglass standard profiles to see more specifications.

Some customers may require the assembled fence panel, which will increase some shipping cost, but you'll save much labor cost when the container arrives.

Fiberglass SMC cap, base and more joint accessories also can be offered by Unicomposite.

                                                                                                Source: www.unicomposite.com

Unicomposite Pultrusion Machiine And Cutting Machine

 

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Fiberglass Pultruded Handrail

As we all know, fiberglass pultruded handrail can be manufactured to be a variety of colors. The common colors are yellow and green. Other colors such as white, red, blue, etc also can be achieved at your request. The color is not easy to fade because anti uv agents has been added in the formulation, painted is not required, and it has characteristic of self-cleaning. Besides the beautiful appearance, color on the pultruded handrail has funtion of warning.

The difference of handrail main supporting materials are the large or small size of round tube, square tube, rectangular tube, I beam and angle profile. And the main difference of handrail design is connectors. General types are pipes tee(T), cross connectors, general base, ribbed base, cap, elbow, 150° elbow, 60° elbow, etc. Some larger and more special connectors also can be offered according to our customers design.

 

Fiberglass pultruded profiles&joints and decking system can be assembled to be handrails and used as stairs guardrail, platform and sidewalk guardrail, residential&villa guardrail, garden fence, oil operating platform and coast guardrail. The general service time of fiberglass handrail is twenty years without special maintenance.

 

For specifications of fiberglass tubes, fiberglass rods, pultruded angles, pultruded deckings, molded gratings, and T profiles, please contact us.

 

                                                                                               Source: www.unicomposite.com

Unicomposite Custom Pultrusions

What does our "Custom Pultrusions design and manufacture" mean? 
We start to custom design and manufacture once our company was found, and now we have lots of successful cases in offering support to our customers on the projects and application. We are striving to serve our customs with best service and qualified products in the following ways:

Strong team：More than seven senior engineers to give the advice on Fiberglass profiles designing and manufacturing.
Lower Cost and quicker delivery: We can design and manufacture the moulds and tools for the FRP profiles, so our total price is lower than that supplied by those suppliers who need to buy the mould from others. Also we can guarantee a much quicker delivery, saving the time for our customer.
Material used: Resin Matrix: standard resin systems can meet different requirements and applications (polyester resin, vinyl ester resin, epoxy resin, phenolic and blend ) 
Reinforcements:Giving the proper advice on the reinforcements to use, and the typical ones are glass fiber or carbon fiber, mat, and other forms needed.
Shapes: from simple to complex, we can supply the pultrusion products with different shapes by vary techniques.

                                                         Custom Pultruded Profiles:

Fiberglass Pultruded Rectangular Tubes

                                                    Source: www.unicomposite.com

Pultruded Solid Rod / Fiberglass Rods

Pultruded Solid Rod: The smallest diameter we can pultude is 2.0mm, which is very easy to be bended. The largest diamter of solid round rod we've manufactured is 48.8mm, the high fiberlgass roving content makes the solid rod have much stronger longitudinal and transversal strength, so it's ideal structural profile to be tool handle, sports goods and reinforcement profiles in building construction. The surface finish of solid rod can be extremely smooth so it won't harm your hands without gel-coating.

source:www.unicomposite.com

Fiberglass Pultruded Tent Pole

There are two kinds of popular tent pole on the market, fiberglass tent pole and aluminum pole, we should be familiar with their properties when choosing the suitable tent pole. Fiberglass tent pole is lighter but have better strength performance and less expensive than aluminum material. It can be folded any time and more convenient to carry.

Tent pole: Fiberglass Pultruded Pole with Shock Corded Zinc Plated, White Ferrule and End
Standard color: black, yellow, red, green
Standard length: 2.2~5.1m, 4~10 sections

                                                                                                        Source: www.unicomposite.com