Mortar-filled glass fiber reinforced plastic pipe

A technology of glass fiber reinforced plastic with sand and sand layer, applied in the field of pipeline, can solve the problems of affecting market competitiveness and high cost, and achieve the effect of stable product quality and reduced manufacturing cost

Inactive Publication Date: 2011-06-01
奉玉贞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the price of resin is 20 to 30 times that of quartz sand, the cost is high and the market competitiveness is seriously affected

Method used

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  • Mortar-filled glass fiber reinforced plastic pipe
  • Mortar-filled glass fiber reinforced plastic pipe

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] A glass-steel sand-filled pipe as shown in the accompanying drawings, from the inside to the outside is an inner lining layer 1, an inner reinforcement layer 2, a low-resin-content sand-inclusion layer 3 and an outer reinforcement layer 4.

[0029] The inner lining layer 1 is formed by winding resin and glass fiber fabric to form the inner wall of the pipe, which is used to transport medium and prevent corrosion and leakage. The manufacturing method is the same as that of ordinary sand-filled pipes.

[0030] The inner reinforcement layer 2 and the outer reinforcement layer 4 are formed by winding resin and glass fiber fabrics, which are used to improve the axial strength and hoop strength of the pipe wall, including tensile strength, bending strength and impact strength. The manufacturing method is the same as that of ordinary sand-filled pipes. .

[0031] The sand layer 3 with low resin content includes quartz sand and natural calcite impregnated with o-phthalic unsatu...

specific Embodiment approach 2

[0037] A low-resin-content FRP sand-filled pipe, the structure and manufacturing method of which are basically the same as those of Embodiment 1, the difference being that the ratio of o-phthalic unsaturated polyester resin, quartz sand and natural calcite is 12%:77% : 11%. Quartz sand includes 15% of 16-20 mesh, 13% of 20-24 mesh, 15% of 24-30 mesh, 12% of 30-40 mesh, 18% of 40-50 mesh, and 18% of 50-60 mesh And 9% of 60-80 mesh quartz sand.

specific Embodiment approach 3

[0038] A FRP sand-filled pipe with low resin content, the structure and its manufacturing method are basically the same as those of Embodiment 1, the difference is that the ratio of o-phthalic unsaturated polyester resin, quartz sand and natural calcite is 15%:71% : 14%. Quartz sand includes 13% of 16-20 mesh, 15% of 20-24 mesh, 15% of 24-30 mesh, 12% of 30-40 mesh, 18% of 40-50 mesh, and 18% of 50-60 mesh And 9% of 60-80 mesh quartz sand.

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Abstract

The invention discloses a mortar-filled glass fiber reinforced plastic pipe, which comprises a lining layer, an inner reinforcing layer, a mortar filler layer and an outer reinforcing layer, wherein the inner reinforcing layer is between the lining layer and the mortar filler layer, and the mortar filler layer comprises quartz sand impregnated with unsaturated polyester resin and ground calcium carbonate. The mortar-filled glass fiber reinforced plastic pipe is characterized in that: in the quartz sand impregnated with unsaturated polyester resin and ground calcium carbonate, the percentage mixing ratio of the unsaturated polyester resin to the quartz sand to the ground calcium carbonate is (9-15):(74-90):(8-14). Compared with the prior art, the mortar-filled glass fiber reinforced plastic pipe has the advantages that: the unsaturated polyester resin content in the mortar filler layer is as low as 9 to 15 percent; the quality of the product is stable and the product is in strict accordance with the requirements of the national GB/T21238-2007standards of glass fiber reinforced plastic mortar-filled pipes on mechanical properties including pipe axial tension, circumferential tension, bending strength, ring stiffness, deflection A and deflection B; and the manufacturing cost of the pipe is reduced by 5 to 30 percent.

Description

technical field [0001] The invention relates to pipelines, in particular to a glass fiber reinforced plastic sand pipe. Background technique [0002] Existing FRP sand-filled pipes generally consist of an inner liner, an inner reinforcement layer, a sand-inclusion layer and an outer reinforcement layer. In order to meet the performance requirements of the national standard GB / T21238-2007 "Glass Fiber Reinforced Plastic Sand Pipe", the resin content of the sand layer is as high as 15-30%. Since the price of resin is 20 to 30 times that of quartz sand, the cost is high and the market competitiveness is seriously affected. Contents of the invention [0003] The technical problem to be solved by the present invention is to make up for the above-mentioned defects of the prior art, and to provide a glass fiber reinforced plastic sand-filled pipe with low resin content. [0004] The technical problems of the present invention are solved by the following technical solutions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14
Inventor 徐光友奉玉贞曹昌龙
Owner 奉玉贞
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