Plastic pipe enhanced by continuous fiber winding

A plastic pipe, winding and strengthening technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve problems such as technical defects, limitations of use conditions, economic performance problems, etc., to achieve low cost, light weight, high strength Effect

Inactive Publication Date: 2006-10-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these pipes have certain limitations in the use process, there are technical defects and economic performance problems, and are limited by the corresponding use conditions

Method used

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  • Plastic pipe enhanced by continuous fiber winding
  • Plastic pipe enhanced by continuous fiber winding
  • Plastic pipe enhanced by continuous fiber winding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The long glass fiber is extruded through the wire coating machine head into such as figure 1 As shown in the composite wire, glass fiber 1 is alkali-free E glass fiber with a diameter of 0.013mm, the tow is made of 2000 monofilaments, and the surface is treated with a silane coupling agent, and the glass fiber coating material 2 is ethylene vinyl acetate copolymer (EVA18 / 3), the coating thickness is 0.2mm. The tensile strength of the coated wire was 280MPa. Pre-coat the bottom layer of high-density polyethylene on a stainless steel drum with a diameter of 1000mm, and then heat the surface with a heating source, wind the EVA-coated glass fiber wire on this layer of pipe, and then cover it with a layer of high-density polyethylene material (PE80 grade), repeat 4 times to reach a wall thickness of 40mm.

[0019] The inner diameter of the obtained pipe is 1000mm, the wall thickness is 40mm, and the pressure test pressure is 3.0MPa. According to the stress calculation, th...

Embodiment 2

[0021] The long glass fiber is extruded through the wire coating machine head into such as figure 2 In the composite wire shown, the glass fiber 1 is alkali-free E glass fiber with a diameter of 0.013mm. Covering thickness is 2.0mm. The coated wire is directly wound on a stainless steel drum with a diameter of 1000mm, and then the surface is heated with a heating source, and then covered layer by layer, repeated several times until the wall thickness reaches 40mm.

[0022] The inner diameter of the obtained pipe is 1000mm, the wall thickness is 40mm, and the pressure test pressure is 3.0MPa. According to the stress calculation, the material grade is PE250.

Embodiment 3

[0024] The long glass fiber is extruded through the wire coating machine head into such as figure 1 As shown in the composite wire, the glass fiber 1 is alkali-free E glass fiber with a diameter of 0.013mm, the tow is made of 2000 monofilaments and strands, the surface is treated with a silane coupling agent, and the glass fiber coating material 2 is ethylene acrylic acid copolymer EAA , Coating thickness is 0.2mm. The tensile strength of the coated wire was 280 MPa. Pre-coat the bottom layer of high-density polyethylene on a stainless steel drum with a diameter of 1000mm, and then heat the surface with a heating source, wind the glass fiber wire coated with EAA on this layer of tubing, and then cover with a layer of high-density polyethylene Material HDPE6100M, repeated winding until the wall thickness reaches 40mm.

[0025] The inner diameter of the obtained pipe is 1000mm, the wall thickness is 40mm, and the pressure test pressure is 3.0MPa. According to the stress calcu...

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Abstract

The invention relates to a plastic tube which uses long fiber (glass fiber, carbon fiber, and metallic fiber) to strengthen the thermal plastic (polythene, polypropylene, and rigid polyvinyl chloride) to coil and shape a plastic tube whose diameter is 4m, while the pressure can reach 1.2MPa, and the thickness is lower than general tubes, with high strength (stress strength can reach 20-30MPa), lower cost and light weight. The invention can be used to pressure transmit the tap water. The method for coating long fiber with adhesive is similar to the one for extruding wire, that coating the adhesive on the fiber to be coiled on the plastic tube with bottom layer, or online extruding coating to be coiled on one heated cylinder stainless steel core, to attain said continuous long fiber strengthen thermal plastic.

Description

technical field [0001] The invention relates to a technology for winding reinforced plastic pipes with continuous long fibers (including glass fibers, carbon fibers and metal fibers). The pipe can be made into a plastic pipe with a diameter of up to 4 meters, which can be used for pressure delivery of fluids such as tap water. Background technique [0002] With the rapid development of my country's economy, the investment in pipeline engineering in infrastructure construction is increasing, and the consumption of various pipelines is increasing day by day. It has become an important part of national infrastructure construction and the lifeblood of urban and industrial production. [0003] At present, there are many types of pipes used in China for the pressure transmission of tap water and other fluids, mainly including: ordinary cast iron pipe (IP), steel pipe (SP), prestressed reinforced concrete pipe (PCCP), ductile iron pipe (DIP), glass steel pipe ( FRP, FGP or GRP), s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/12
Inventor 苑会林
Owner BEIJING UNIV OF CHEM TECH
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