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Poly ethylene (PE) combined pipe

A composite pipe and layer composite technology, applied in the field of composite pipes, can solve the problems of easy leakage, affect the firmness of the pipes, and high production costs, and achieve the effects of increasing compressive strength, high bonding strength and long service life.

Inactive Publication Date: 2013-04-24
郭翠芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a PE composite pipe to solve the problem that the existing pipes are easy to corrode and rust, easily affected by the weather, cumbersome, high production cost, broken pipes, easy to leak, wash off the adhesive and affect the pipes Technical issues such as firmness between

Method used

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  • Poly ethylene (PE) combined pipe
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Put 50 parts of HDPE resin (high-density polyethylene), 0.2 part of sorbitol, and 5 parts of thermoplastic polyurethane elastomer into the hopper of the first extruder by weight; 80 parts of HDPE resin, calcium carbonate 5 parts by weight 1 part of calcium stearate, 2 parts of nano-sized titanium dioxide, 0.3 part of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.3 part of phenyl o-hydroxybenzoate 0.2 part of polyethylene wax and 0.2 part of polyethylene wax are mixed and put into the hopper of the second extruder; the third extruder prepares the HDPE core pipe 5. During production, the HDPE core tube 5 is extruded by the third extruder. After water cooling and sizing, the stainless steel wire is wound on the HDPE core tube 5 in a left-handed and right-handed manner from the left and right sides, and the winding angle is 50 degrees. , so that the pipe is evenly stressed in the axial and circumferential directions to for...

Embodiment 2

[0018] Embodiment 2: Put 50 parts of HDPE resin (high-density polyethylene), 0.5 part of sorbitol, and 5 parts of thermoplastic polyurethane elastomer into the hopper of the first extruder by weight; 83 parts of HDPE resin, 8 parts of calcium carbonate by weight 3 parts of calcium stearate, 2 parts of nano-sized titanium dioxide, 0.4 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.4 parts of phenyl o-hydroxybenzoate 0.2 part of polyethylene wax and 0.2 part of polyethylene wax are mixed and put into the hopper of the second extruder; the third extruder prepares the HDPE core pipe 5. The production method is the same as above.

Embodiment 3

[0019] Embodiment 3: Put 50 parts of HDPE resin (high-density polyethylene), 1.1 parts of sorbitol, and 5 parts of thermoplastic polyurethane elastomer into the hopper of the first extruder by weight; 85 parts of HDPE resin, 10 parts of calcium carbonate by weight 5 parts of calcium stearate, 3 parts of nano-sized titanium dioxide, 0.5 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 0.5 parts of phenyl o-hydroxybenzoate 0.3 parts of polyethylene wax and 0.3 parts of polyethylene wax are mixed and put into the hopper of the second extruder; the third extruder prepares HDPE core pipe 5. The production method is the same as above.

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Abstract

A poly ethylene (PE) combined pipe is formed by combining a high-density poly ethylene (HDPE) core pipe, a stainless steel mesh layer, a PE combination layer and a modified PE layer, wherein the HDPE core pipe is located in an innermost layer. The stainless steel mesh layer is wrapped outside the HDPE core pipe, the PE combination layer is wrapped outside the stainless steel mesh layer, and the modified PE layer is wrapped outside the PE combination layer. The PE combined pipe has the advantages of being high in applicability and combination strength, non-toxic, free of stimulation, resistant to corrosion, difficult to rust and low in cost and the like. Modified PE pipes are chosen for the modified PE layer, the modified PE layer is resistant to corrosion, long in service life and capable of being resistant to corrosion of various corrosive media such as acid, alkali, salt and organic solvents, corrosion damage caused by electrocorrosion generated in materials such as steel pipes is avoided, and the service life of the modified PE layer can be 60-70 years. The stainless steel mesh layer can improve compressive strength of an HDPE combined pipe, and accidents of the HDPE compound pipe such as fracture and water leakage and the like cannot occur easily.

Description

technical field [0001] The invention relates to a composite pipe, in particular to a PE composite pipe. Background technique [0002] Water supply and drainage pipes are widely used in water supply and drainage fields such as roads, railway subgrades, subway projects, waste landfills, tunnels, green belts, sports fields, etc., as well as underground irrigation and drainage systems for agriculture and horticulture. Traditional water supply and drainage pipes are mostly made of metal. Because they are buried underground for a long time, they are particularly prone to corrosion and rust, and even cause serious problems such as perforation and blockage. [0003] At present, plastic water pipes are developing rapidly, and most of them are dominated by polyethylene (PE) and polyvinyl chloride (PVC) pipes. Although the problem of metal pipes being easy to corrode and rust has been solved to a certain extent, the common problem is poor impact resistance. , Low compressive strength ...

Claims

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Application Information

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IPC IPC(8): F16L9/147F16L9/21C08L23/06C08L75/04C08K5/053C08K13/02C08K3/26C08K5/098C08K3/22C08K5/134
Inventor 周伟林风郭翠芳
Owner 郭翠芳
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