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Method for preparing radiotolerant thermoplastic elastomer

A thermoplastic elastomer, radiation-resistant technology, applied in the field of preparation of functional polymer materials, can solve the problems of limited service life and application range, low dose tolerance, etc., achieve excellent melt flow properties, improve processing properties, and reduce fractures Effect

Inactive Publication Date: 2008-06-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the dose of radiation-resistant polypropylene resin materials or composite materials is low, which limits their service life and scope of use

Method used

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  • Method for preparing radiotolerant thermoplastic elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 84 grams of thermoplastic elastomers, 56 grams of polystyrene, 2.8 grams of anthracene and 0.4 grams of antioxidant 1010 were mixed in a Hack torque rheometer, the mixing temperature was 180 ° C, and the mixing time was 10 minutes. A radiation-resistant thermoplastic elastomer is obtained.

Embodiment 2

[0019] 84 grams of thermoplastic elastomers, 56 grams of polystyrene, 2.8 grams of pyrene and 0.4 grams of antioxidant 1010 were mixed in a Hack torque rheometer, the mixing temperature was 180 ° C, and the mixing time was 10 minutes. A radiation-resistant thermoplastic elastomer is obtained.

Embodiment 3

[0021] 84 grams of thermoplastic elastomers, 56 grams of polystyrene, 5.6 grams of pyrene and 0.4 grams of antioxidant 1010 were mixed in a Hack torque rheometer, the mixing temperature was 180 ° C, and the mixing time was 10 minutes. A radiation-resistant thermoplastic elastomer is obtained.

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PUM

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Abstract

The present invention discloses a preparation method of radiation resistant thermoplastic elastomer, consisting of thermoplastic elastomer styrene-ethylene-butylene-styrene periodic copolymer, polystyrene resin, radiation protecting agent and antioxygen. The present invention adopts a melt-blending process for preparation. The radiation resistant thermoplastic elastomer prepared by the present invention has good radiation resistant performance. After the elastomer is aged by the radiation of 2.0MGy dosage of gamma-ray under the room temperature, the rupture extensibility of the material is 198 percent and the tensile strength is 56 percent of the tensile strength before radiation; in addition, the present invention maintains good electric performance.

Description

Technical field: [0001] The invention relates to a preparation method of a functional polymer material, in particular to a preparation method of a radiation-resistant thermoplastic elastomer. Background technique: [0002] The wires and cables used in the nuclear power industry, the communication cables and shields used in space technology, and the radiation disinfection products in medical equipment need to use a large number of polymer materials with high energy radiation resistance. According to the standard of IEC (International Electrotechnical Commission), under normal temperature, in the air, the elongation at break of the material after experiencing 2.0 megagray dose of gamma-ray irradiation aging is more than 50%, and the tensile strength is 50% of that before irradiation. % or more, the material can be considered to be radiation-resistant. [0003] Currently, many radiation-resistant materials or composites have been proposed. U.S. Patent No. 6,841,652 and U.S. P...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08K5/01C08L25/06
Inventor 陈建江平开韦平汪根林黄兴溢
Owner SHANGHAI JIAO TONG UNIV
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