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A new type of high-strength HDPE composite pipe and its production method

A composite pipe, high-strength technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of poor impact resistance, low compressive strength, and poor straightness of pipes, and achieve wear resistance High performance, extended service life, long service life effect

Active Publication Date: 2017-09-05
HUBEI HUIFENG PLASTIC PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a new type of high-strength HDPE composite pipe and its production method to solve the technical problems of existing pipes such as poor impact resistance, low compressive strength, poor rigidity, poor straightness, and poor flame retardancy.

Method used

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  • A new type of high-strength HDPE composite pipe and its production method
  • A new type of high-strength HDPE composite pipe and its production method

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: 50 parts of PE resin, 0.2 part of sorbitol, and 5 parts of thermoplastic polyurethane elastomer are put into the hopper of the first extruder by weight ratio; 80 parts of PE resin, 2 parts of mica powder, calcium sulfate crystal 2 parts of whiskers, 1 part of nano titanium dioxide, 1 part of aluminum borate whiskers, 5 parts of maleic anhydride grafted polyethylene, 3 parts of sodium benzoate, 0.5 parts of antioxidant BHT, 0.5 parts of phenyl o-hydroxybenzoate, polyethylene glycol 0.3 parts of alcohol 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 pipe (high-density polyethylene) 5 is extruded by the third extruder, and the PE bonding layer 3 is extruded by the first extruder to wrap the HDPE core pipe 5. After water cooling and sizing, The modified PE layer 1 is extruded by the second extruder to wrap the PE binding layer 3 . This can ensure that the inner and o...

Embodiment 2

[0019] Embodiment 2: Put 50 parts of PE resin, 0.5 part of sorbitol, and 3 parts of thermoplastic polyurethane elastomer into the hopper of the first extruder by weight; 82 parts of PE resin, 3 parts of mica powder, calcium sulfate crystal 3 parts of whiskers, 1 part of nano titanium dioxide, 2 parts of aluminum borate whiskers, 5 parts of maleic anhydride grafted polyethylene, 2 parts of sodium benzoate, 0.4 parts of antioxidant BHT, 0.3 parts of phenyl phthalate, polyethylene glycol 0.2 parts of alcohol are mixed and put into the hopper of the second extruder; the HDPE core pipe 5 is prepared by the third extruder. During production, the HDPE core pipe 5 is extruded by the third extruder, and the PE bonding layer 3 is extruded by the first extruder to wrap the HDPE core pipe 5. After water cooling and sizing, the second extruder Machine extruded modified PE layer 1 wraps PE bonding layer 3 . This can ensure that the inner and outer layers of PE are thermally fused together ...

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Abstract

A new type of high-strength HDPE composite pipe, which is composed of HDPE core pipe and modified PE layer, the innermost layer is HDPE core pipe, the HDPE core pipe is wrapped with PE bonding layer, and the PE bonding layer is wrapped with modified PE layer. The invention has the characteristics of good impact resistance, high compressive strength, high wear resistance and the like. Among them, the HDPE core tube is corrosion-resistant and has a long service life. It can resist the erosion of various corrosive media such as acid, alkali, and salt. The modified PE layer can inhibit the oxidative degradation of plastics, improve the anti-ultraviolet performance of the tube body, and prolong the service life of the tube body. . The PE bonding layer is made of thermoplastic elastomer, which greatly improves the material performance, improves the bonding ability of the core tube and the modified PE layer, and its service life can reach 60 years.

Description

technical field [0001] The invention relates to a PE plastic pipe, in particular to a novel high-strength HDPE composite pipe and a production method thereof. Background technique [0002] Plastic pipe is a product made of synthetic resin plus additives through melt molding. Additives include plasticizers, stabilizers, fillers, lubricants, colorants, ultraviolet absorbers, modifiers, etc. Commonly used plastic pipes are: rigid polyvinyl chloride pipe (PVC-U), high-density polyethylene pipe (PE-HD), cross-linked polyethylene pipe (PE-X), random copolymer polypropylene pipe (PP-R), Polybutylene pipe (PB), engineering plastic acrylonitrile-butadiene-styrene copolymer (ABS), etc. Plastic pipe has the advantages of good corrosion resistance, small thermal conductivity, low thermal conductivity, heat insulation, good energy saving effect, low density, light material, convenient transportation, installation, flexibility, simplicity, and easy maintenance. At present, the plastic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/12C08L23/06C08L75/04C08K5/053C08K13/04C08K7/08B29C47/06
Inventor 赵可郭翠芳
Owner HUBEI HUIFENG PLASTIC PIPE
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