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A preparation method of graphene-reinforced ultra-high molecular weight polyethylene double-resistance pipe for mining

An ultra-high molecular weight, polyethylene technology, used in applications, tubular articles, household appliances, etc., can solve the problems of limited practical application, excessive addition of flame retardants, environmental pollution, etc., to achieve broad economic prospects and social benefits, improve Mechanical properties, the effect of high specific surface area

Inactive Publication Date: 2020-12-01
JIUJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing antistatic and flame retardant UHMWPE pipes are usually added with flame retardants such as bromine, phosphorus, silicon, and inorganic fillers. Ultra-high molecular weight polyethylene is in a highly elastic state when it melts, resulting in poor compatibility between different systems, which ultimately affects the mechanical properties after modification. Its density is high, and the transportation and installation costs of the product are relatively high. These have limited its practical application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) at first 4 parts of nano-graphene sheets (thickness 5-10nm, sheet diameter 10-20um, number of layers 5-10 layers) drop into 3 parts of KH-570 silane coupling agent ethanol solution (coupling agent mass content is 10%, the mass content of ethanol is 85%, and the mass content of water is 5%), after stirring evenly, process it with a high-speed shear disperser for 30 minutes to obtain a uniformly dispersed graphene slurry for subsequent use.

[0025] (2) Then add 100 parts of molecular weight to the graphene slurry as ultra-high molecular weight polyethylene powder of 5 million, 0.5 part of azodicarbonamide, 0.5 part of maleic anhydride, 1 part of polyethylene wax, 6 parts of red phosphorus , 3 parts of Mg(OH) 2, 5 parts of conductive graphite powder (4000 mesh), 3 parts of polyethylene powder with a molecular weight of 600,000, 1 part of sodium oxalate, 0.2 part of antioxidant 1010, stir the mixture with a mixer Treatment, the temperature is 60°C, the rotation speed i...

Embodiment 2

[0029] (1) First, 3 parts of nano-graphene sheets (thickness 5nm, sheet diameter 10um, number of layers 5 layers) are dropped into 4 parts of JTW-101 titanate coupling agent ethanol solution (coupling agent mass content is 10%, ethanol The mass content is 85%, and the water mass content is 5%), after being stirred evenly, it is processed with a high-speed shear disperser for 30 minutes to obtain a uniformly dispersed graphene slurry, which is set aside.

[0030](2) Then adding 100 parts of molecular weight to the graphene slurry is 8 million ultra-high molecular weight polyethylene powder, 0.5 part of azobisisobutyronitrile, 0.5 part of phthalic anhydride, 1 part of calcium stearate, 6 parts Red phosphorus, 3 parts of Al(OH)3, 5 parts of conductive carbon black (4000 mesh), 4 parts of polyethylene powder with a molecular weight of 500,000, 1 part of benzoic acid, 0.1 part of antioxidant 1010, and stir the mixture with a mixer Treatment, the temperature is 70°C, the rotation sp...

Embodiment 3

[0034] (1) First, 5 parts of nanographene sheets (thickness 5nm, sheet diameter 5um, number of layers 3 layers) are dropped into 5 parts of KH-550 silane coupling agent ethanol solution (coupling agent mass content is 10%, ethanol mass content 85%, the water mass content is 5%), after stirring evenly, process it with a high-speed shear disperser for 30 minutes to obtain a uniformly dispersed graphene slurry, which is set aside.

[0035] (2) Then adding 100 parts of molecular weight to the graphene slurry is ultra-high molecular weight polyethylene powder of 7 million, 0.5 part of azodicarbonamide, 0.5 part of isocyanate, 1 part of paraffin, 5 parts of phosphoric acid ester, 5 parts of Al(OH ) 3, 4 parts of conductive carbon black (6000 mesh), 3 parts of polyethylene powder with a molecular weight of 400,000, 1 part of diatomaceous earth (4000 mesh), 0.1 part of antioxidant 1010, stir the mixture with a mixer, and the temperature The temperature is 80°C, the rotation speed is 3...

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Abstract

A method for preparing a graphene-reinforced ultra-high molecular weight polyethylene double-resistance pipe for mine use, the raw material composition: 100 parts of ultra-high molecular weight polyethylene, 2-5 parts of nano-graphene sheets, 5-10 parts of coupling agent, 0.1 ‑1 part of foaming agent, 0.1‑1 part of compatibilizer, 1‑2 parts of lubricant, 6‑10 parts of halogen-free flame retardant, 3~6 parts of antistatic agent, 2‑4 parts of Flow modifier, 1-3 parts of nucleating agent, etc., the above components are extruded, shaped and other processes to obtain graphene-enhanced ultra-high molecular weight polyethylene double-resistant pipes. The present invention disperses nano-graphene, antistatic agent and flame retardant in the medium gap of ultra-high molecular weight polyethylene resin through coupling agent, compatibilizer, flow agent, lubricant, nucleating agent, etc.; nano-graphene sheet and The combination of flame retardants has a significant synergistic flame retardant effect, and the combination with antistatic agents can reduce the resistivity of the pipe. The prepared pipe has the characteristics of light weight, high strength, flame retardancy, antistatic, etc., and can be used in operating environments containing a large amount of gas, such as coal mines, underground mines, and mines.

Description

technical field [0001] The invention relates to a method for preparing a graphene-enhanced ultra-high molecular weight polyethylene double-resistance pipe, specifically belonging to the technical field of plastic pipes. Background technique [0002] Ultra-high molecular weight polyethylene is a linear thermoplastic polymer with a molecular weight of more than 1.5 million. Although the molecular structure is the same as that of ordinary high-density polyethylene (HDPE), its performance shows great differences. Wear performance, impact resistance, self-lubrication, low temperature resistance, non-toxic, shock absorption, electrical insulation and other aspects show excellent performance. At present, ultra-high molecular weight polyethylene is widely used in many fields such as machinery, transportation, textile, papermaking, chemical industry, mining, petroleum, construction, medical treatment, and sports. However, the flammability and electrical insulation of ultra-high mole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K9/04C08K7/00C08K3/04C08K7/24C08K3/22C08K3/02C08K3/32C08K5/523C08K5/3492B29C48/00B29L23/00
CPCB29L2023/22B29C48/022B29C48/09C08K2201/001C08K2201/011C08K2201/014C08L23/06C08L2201/02C08L2201/04C08L2203/18C08L2205/025C08L2207/068C08K13/06C08K9/06C08K9/04C08K7/00C08K3/04C08K7/24C08K2003/2227C08K2003/2224C08K2003/026C08K2003/323C08K5/523C08K5/34922
Inventor 杨涛乔波谢雨君黄卫卢琴芳廖先鹏
Owner JIUJIANG UNIV
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