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Antistatic halogen-free flame-resistant UHMWPE (ultrahigh-molecular-weight polyethylene)/graphene composite material and preparation method thereof

A composite material and graphene technology, applied in the field of ultra-high molecular weight polyethylene materials, can solve the problems of poor fluidity, high resistivity, poor flame retardancy, etc., and achieve the effect of favorable fluidity

Inactive Publication Date: 2014-03-05
JIANGSU YUEDA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its disadvantages such as poor flame retardancy, poor fluidity, and high resistivity, the use of ultra-high molecular weight polyethylene in higher requirements and more special occasions is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In parts by weight, 70 parts of ultra-high molecular weight polyethylene, 8 parts of flame retardant, 4 parts of synergistic flame retardant, 3 parts of flow modifier, 0.1 part of antioxidant, 2 parts of antistatic agent, 3 parts of phase Container agent, 2 parts smoke suppressant. First place a certain amount of expandable graphite and hyperbranched polyethylene in a mixed solution of tetrahydrofuran / chloroform (3 / 4) for ultrasonic oscillation for 48 hours, and then centrifuge for 2 hours at a speed of 1000 rpm, the supernatant is the hyperbranched polyethylene surface-modified graphene solution, and the supernatant is placed in an oven at 80°C for 10 hours to obtain dry powdered graphene. Then UHMWPE is mixed with various additives at high speed, and then melted and pressed at 220 ° C and 24 MPa by compression molding.

Embodiment 2

[0024] In parts by weight, 80 parts of ultra-high molecular weight polyethylene, 10 parts of flame retardant, 5 parts of synergistic flame retardant, 5 parts of flow modifier, 0.2 part of antioxidant, 4 parts of antistatic agent, 4 parts of phase Container agent, 2 parts smoke suppressant. First place a certain amount of expandable graphite and hyperbranched polyethylene in a mixed solution of tetrahydrofuran / chloroform (3 / 4) for ultrasonic oscillation for 48 hours, and then centrifuge for 2 hours at a speed of 1100 rpm, the supernatant is the hyperbranched polyethylene surface-modified graphene solution, and the supernatant is placed in an oven at 80°C for 12 hours to obtain dry powdered graphene. Then UHMWPE is mixed with various additives at high speed, and then melted and pressed at 220 ° C and 24 MPa by compression molding.

Embodiment 3

[0026] In parts by weight, 100 parts of ultra-high molecular weight polyethylene, 12 parts of flame retardant, 7 parts of synergistic flame retardant, 6 parts of flow modifier, 0.4 part of antioxidant, 5 parts of antistatic agent, 6 parts of phase Container agent, 3 parts smoke suppressant. First place a certain amount of expandable graphite and hyperbranched polyethylene in a mixed solution of tetrahydrofuran / chloroform (3 / 4) for ultrasonic oscillation for 48 hours, and then centrifuge for 3 hours at a speed of 1200 rpm, the supernatant is the hyperbranched polyethylene surface-modified graphene solution, and the supernatant is placed in an oven at 90°C for 12 hours to obtain dry powdered graphene. Then UHMWPE is mixed with various additives at high speed, and then melted and pressed at 220 ° C and 24 MPa by compression molding.

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PUM

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Abstract

The invention discloses an antistatic halogen-free flame-resistant UHMWPE (ultrahigh-molecular-weight polyethylene) / graphene composite material and a preparation method thereof. The antistatic halogen-free flame-resistant UHMWPE / graphene composite material comprises the following components in parts by weight: 70-120 parts of UHMWPE, 6-30 parts of a flame retardant, 3-15 parts of a synergistic flame retardant, 2-20 parts of a flow modifier, 0.05-2 parts of an antioxidant, 3-8 parts of an antistatic agent, 2-8 parts of a compatilizer and 1-3 parts of a smoke suppressor. According to the antistatic halogen-free flame-resistant UHMWPE / graphene composite material disclosed by the invention, a novel antistatic agent is adopted to improve the antistatic property of UHMWPE, and the novel antistatic agent is hyperbranched polyethylene surface modified graphene. The novel antistatic agent has the advantages as follows: on the one hand, due to the ultrahigh conductivity of graphene, a good conductive channel can be formed in matrix resin under the condition that the added amount is small, and on the other hand, the hyperbranched polyethylene surface modified graphene can be well dispersed in UHMWPE and adhesive power between the graphene and an interface of UHMWPE is improved.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene material, more precisely, an antistatic halogen-free flame-retardant UHMWPE / graphene composite material and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is an engineering plastic with a linear structure and excellent comprehensive properties. Usually, linear polyethylene with a viscosity-average molecular weight of more than 1.5 million is called ultra-high molecular weight polyethylene. Generally, its density is (0.936 -0.964)×10 3 kg / m 3 . Due to its extremely high molecular weight and intertwined long chain structure, UHMWPE has excellent wear resistance, impact resistance, corrosion resistance and self-lubricating properties, especially its comprehensive performance is very outstanding. UHMWPE can replace carbon steel, stainless steel, bronze and other materials in textile, paper, food machinery, transportation, m...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/04C08K3/04C08K3/32C08K5/3492C08K5/053
CPCC08L23/06C08K2201/017C08L2201/02C08L2201/04C08L2201/22C08L2205/03C08L2205/12C08L2207/068C08L67/00C08L51/06C08K13/06C08K9/08C08K3/04C08K3/346C08K3/34
Inventor 成文俊刘岸春杨玉晴
Owner JIANGSU YUEDA NEW MATERIAL TECH
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