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.

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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 .

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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.

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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.

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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.

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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.

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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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