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Novel high-strength HDPE (High-Density Polyethylene) composite tube and production method thereof

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 flame retardancy of pipes, and achieve wear resistance High performance, extended service life, and improved material properties

Active Publication Date: 2013-03-27
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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  • Novel high-strength HDPE (High-Density Polyethylene) composite tube and production method thereof
  • Novel high-strength HDPE (High-Density Polyethylene) composite tube and production method thereof

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

The invention discloses a novel high-strength HDPE (High-Density Polyethylene) composite tube, which is obtained by composting an HDPE core tube, and a modified PE (Poly Ethylene) layer, wherein the innermost layer is the HDPE core tube which is enwrapped by a PE bonding layer, and the modified PE layer enwraps the PE bonding layer. The composite tube disclosed by the invention has the characteristics of good shock resistance, high compression strength, high wear resistance and the like. The HDPE core tube is corrosion resistant so that the composite tube is long in service life and capable of resisting the invasion by various corrosive media, such as an acid, an alkali and a salt, the modified PE layer is adopted so that plastic oxidative degradation is inhibited, tube ultra-violet resistance performance is improved, and tube service life is prolonged, and the PE bonding layer adopts a thermoplastic elastic body so that material performance is greatly improved, bonding capacity between the core tube and the modified PE layer is improved, and 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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IPC IPC(8): F16L9/12C08L23/06C08L75/04C08K5/053C08K13/04C08K7/08B29C47/06
Inventor 郭翠芳林枫
Owner HUBEI HUIFENG PLASTIC PIPE
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