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High-impact-resistance anti-static ultra-high molecular weight polyethylene composite material and preparation method thereof

An ultra-high molecular weight, composite material technology, applied in the field of high-impact and anti-static ultra-high molecular weight polyethylene composite materials and its preparation, can solve the problems of large carbon black filling, the influence of the mechanical properties of the matrix, and the difficulty of forming and processing.

Inactive Publication Date: 2017-08-04
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0004] The antistatic treatment of UHMWPE is currently widely used and the best effect is to use low-priced carbon black filling to improve its electrical conductivity. However, in order to achieve the desired electrical conductivity, the amount of carbon black filling is often large. The mechanical properties are seriously affected, on the other hand, the rheology of the material is deteriorated, and the molding process is difficult

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  • High-impact-resistance anti-static ultra-high molecular weight polyethylene composite material and preparation method thereof
  • High-impact-resistance anti-static ultra-high molecular weight polyethylene composite material and preparation method thereof
  • High-impact-resistance anti-static ultra-high molecular weight polyethylene composite material and preparation method thereof

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Embodiment Construction

[0019] One aspect of the present invention provides an ultra-high molecular weight polyethylene composite material, which includes a product obtained by compounding multi-walled carbon nanotubes and ultra-high molecular weight polyethylene at an ultra-high rotational speed; wherein, the multi-walled carbon nanotubes in the composite material The mass percentage of the tube is 0.5-5%.

[0020] Another aspect of the present invention provides a method for preparing the above-mentioned composite material, comprising the following specific steps:

[0021] (1) The ultra-high molecular weight polyethylene powder is placed in a vacuum drying oven, and vacuum-dried at 60° C. for 12 hours;

[0022] (2) Accurately weigh 95-99.5wt% of the dried ultra-high molecular weight polyethylene powder, stir in a high-speed mixer for 60-120s, and the rotating speed is 20000-30000r / min;

[0023] (3) Accurately weigh 0.5-5% of the multi-walled carbon nanotube powder and add it to the ultra-high mole...

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Abstract

The invention belongs to the field of high polymer materials and particularly relates to a high-impact-resistance anti-static ultra-high molecular weight polyethylene composite material and a preparation method thereof. The composite material contains a product obtained by compounding multiwalled carbon nanotubes with ultra-high molecular weight polyethylene at an ultra-high rotation speed, wherein the mass percentage content of the multiwalled carbon nanotubes in the composite material is 0.5%-5%. The ultra-high molecular weight polyethylene composite material has anti-static performance, and the volume resistance of the composite material is 103-107 ohms; the composite material has excellent impact resistance, and compared with a pure ultra-high molecular weight polyethylene composite material, the impact resistance is increased by 52.2%-73.9%. The invention further provides the preparation method of the high-impact-resistance anti-static ultra-high molecular weight polyethylene composite material. The preparation method is simple in process, environment-friendly and safe.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a high-impact and antistatic ultra-high molecular weight polyethylene composite material and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is a new type of engineering plastic with excellent performance. advantage. Therefore, UHMWPE is often used in some specific fields including bearing components, gears, guide rails and artificial joints. [0003] On the other hand, the volume resistivity of UHMWPE is higher, about 10 17 ~10 18 Ω·cm. During the forming, transportation and use of UHMWPE products, it is easy to generate and accumulate static electricity when subjected to friction and extrusion. huge loss. As for the harm of static electricity in the electronics industry, it is more common and prominent. Therefore, in these applications, antistatic treatment of UHMWPE has become a very prominent and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L91/06C08K5/098C08K7/24
CPCC08L23/06C08K2201/011C08K2201/014C08L2201/04C08L2205/025C08L2205/03C08L2207/068C08L91/06C08K5/098C08K7/24
Inventor 赵世成辛忠陈荣志叶纯麟
Owner EAST CHINA UNIV OF SCI & TECH
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