Preparation method of antistatic ultra-high molecular weight polyethylene (UHMWPE)/graphene composite material

A composite technology of ultra-high molecular weight and graphene, which is applied in the field of ultra-high molecular weight polyethylene/graphene antistatic composite materials and its preparation, and can solve problems such as environmental pollution and complicated preparation process

Active Publication Date: 2013-12-18
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this method involves two-step solution blending, the preparation process is relatively complicated, and it needs to use highly toxic chemical reducing agents, such as hydrazine hydrate, etc., which is easy to cause environmental pollution in the industrial mass production process.

Method used

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  • Preparation method of antistatic ultra-high molecular weight polyethylene (UHMWPE)/graphene composite material
  • Preparation method of antistatic ultra-high molecular weight polyethylene (UHMWPE)/graphene composite material
  • Preparation method of antistatic ultra-high molecular weight polyethylene (UHMWPE)/graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of UHMWPE charged particles: UHMWPE was dried in a vacuum oven at 100°C for 24 hours, so that the moisture content in the UHMWPE raw material was lower than 0.01%. 10g of UHMWPE and 10mg of graphene were placed in a high-speed mixer and stirred to obtain ultra-high molecular weight polyethylene / graphene composite particles; the graphene was added to the high-speed mixer in 3 times, and each time was stirred at a speed of 10000r / min for 10s at a high speed.

[0021] (2) High-temperature compression molding: preheat the ultra-high molecular weight polyethylene / graphene composite particles prepared in step (1) at 200°C for 5 minutes; then hot-press at 200°C and 10MPa for 30 minutes; finally cool to At room temperature, the target product was prepared.

Embodiment 2

[0023] Others are the same as in Example 1, the added graphene content is 50 mg, and the number of times of high-speed stirring is 5 times.

Embodiment 3

[0025] Others are the same as in Example 1, the added graphene content is 100 mg, the number of high-speed stirring is 10 times, and 10 mg graphene is added each time.

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Abstract

The invention relates to a preparation method of an antistatic ultra-high molecular weight polyethylene (UHMWPE) / graphene composite material. The method comprises the following steps: putting UHMWPE and graphene powder in a high-speed stirrer to be stirred to obtain UHMWPE / graphene composite particles, wherein the graphene powder is added to the high-speed stirrer in 2-50 times and the materials are stirred for 10-30 seconds each time at a speed of 10000-30000r / min; preheating the UHMWPE / graphene composite particles at 180-240 DEG C for 5-10 minutes, and then carrying out hot pressing for 30 minutes under the conditions of the same temperature and 10MPa, thus obtaining the UHMWPE / graphene material. The method has the beneficial effects that solvents are not involved in the method; the required antistatic composite material is prepared through electrostatic adsorption and hot press molding; the prepared material has a three-dimensional net structure; the percolation value of the material is slightly higher than that of the material prepared by a solution method.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an ultrahigh molecular weight polyethylene / graphene antistatic composite material and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene is a thermoplastic engineering plastic with excellent comprehensive properties, which plays a pivotal role in modern warfare and aviation, aerospace, sea defense equipment and other fields. Ultra-high molecular weight polyethylene has the advantages of flame retardancy, chemical corrosion resistance, wear resistance, excellent electrical insulation and high mechanical strength. It is widely used in various fields and is the world's largest general-purpose plastic. However, the surface resistance of UHMWPE is as high as 10 14 Ω~10 17 Ω is easy to generate static electricity, which is easy to cause explosion and fire. Improving the antistatic ability of ultra-high molecular weight pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/04B29C51/00
Inventor 陈鹏王兵杰顾群周旭峰刘兆平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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