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Preparation method of mineral graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe

A technology of ultra-high molecular weight and polyethylene, applied in applications, household appliances, tubular objects, etc., can solve the problems of high flame retardant addition, environmental pollution, high density, etc., and achieve improved mechanical properties, high specific surface area, and high conductivity rate effect

Inactive Publication Date: 2017-06-20
JIUJIANG UNIVERSITY
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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) First, put 4 parts of nano-graphene sheets (thickness 5-10nm, sheet diameter 10-20um, number of layers 5-10 layers) into 3 parts of KH-570 silane coupling agent ethanol solution (the mass content of coupling agent is 10%, the mass content of ethanol is 85%, and the mass content of water is 5%), and after stirring evenly, it is treated with a high-speed shearing disperser for 30 minutes to obtain a uniformly dispersed graphene slurry for use.

[0025] (2) Next, add 100 parts of ultra-high molecular weight polyethylene powder with a molecular weight of 5 million, 0.5 parts of azodicarbonamide, 0.5 parts of maleic anhydride, 1 part of polyethylene wax, and 6 parts of red phosphorus to the graphene slurry. , 3 parts 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, and the mixture was stirred with a mixer at a temperature of 60 ° C and a...

Embodiment 2

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

[0030] (2) Next, add 100 parts of ultra-high molecular weight polyethylene powder with a molecular weight of 8 million, 0.5 part of azobisisobutyronitrile, 0.5 part of phthalic anhydride, 1 part of calcium stearate, 6 parts of graphene to the graphene slurry Red phosphorus, 3 parts 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 at a temperature of 70 ° C and a speed of 300 rp...

Embodiment 3

[0034] (1) First put 5 parts of graphene nano sheets (thickness 5nm, sheet diameter 5um, number of layers 3 layers) into 5 parts of KH-550 silane coupling agent ethanol solution (the mass content of the coupling agent is 10%, the mass content of ethanol 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) Next, add 100 parts of ultra-high molecular weight polyethylene powder with a molecular weight of 7 million, 0.5 parts of azodicarbonamide, 0.5 parts of isocyanate, 1 part of paraffin, 5 parts of phosphate, and 5 parts of Al(OH) into the graphene slurry. ) 3 , 4 parts of conductive carbon black (6000 mesh), 3 parts of polyethylene powder with a molecular weight of 400,000, 1 part of diatomite (4000 mesh), 0.1 part of antioxidant 1010, stir the mixture with a mixer, and the temperature is 80 ℃, the rotation speed is 300rpm, after ...

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Abstract

The invention relates to a preparation method of a mineral graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe. The pipe is prepared from the following raw materials: 100 parts of ultra-high molecular weight polyethylene, 2-5 parts of nano-graphene sheets, 5-10 parts of a coupling agent, 0.1-1 part of a foaming agent, 0.1-1 part of a compatibilizer, 1-2 parts of a lubricating agent, 6-10 parts of a halogen-free flame retardant, 3-6 parts of an antistatic agent, 2-4 parts of a flow modifier, 1-3 parts of a nucleating agent, and the like; the graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe is prepared by the processes of extruding, sizing, and the like. According to the preparation method, nano-graphene, the antistatic agent and the flame retardant are dispersed into ultra-high molecular weight polyethylene resin medium gaps by means of the coupling agent, the compatibilizer, the flow modifier, the lubricating agent, the nucleating agent, and the like; the nano-graphene sheets have significant synergistic flame retardation after being compounded with the flame retardant, and can reduce the resistivity of the pipe after being compounded with the antistatic agent. The prepared pipe has the characteristics of being light in weight, high in strength, flame-retardant, antistatic, and the like, thus being used in the operating environments such as coal mines, downhole and mines in which a great deal of gas exists.

Description

technical field [0001] The invention relates to a preparation method of a graphene-reinforced ultra-high molecular weight polyethylene double-resistance pipe for mining, and specifically belongs 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 properties show great differences. Wear performance, impact resistance, self-lubrication, low temperature resistance, non-toxicity, shock resistance, electrical insulation and other aspects show excellent performance. At present, UHMWPE is widely used in machinery, transportation, textile, papermaking, chemical industry, mining, petroleum, construction, medical treatment, sports and many other fields. However, the flammability and electrical insulation properties of UHMWPE are not suitab...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K9/04C08K7/00C08K3/04C08K7/24C08K3/22C08K3/02C08K3/32C08K5/523C08K5/3492B29C47/00B29L23/00
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 UNIVERSITY
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