Page 100 - 《橡塑技术与装备》2023年6期

橡塑技术与装备 CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT

2. Huzhou University, Huzhou 313000, Zhejiang, China;
3. Nanjing University of Technology, Nanjing 210094, Jiangsu, China;
4. Changzhou Langbo Sealing Technology Co. LTD., Changzhou 213200, Jiangsu, China )

Abstract: In order to further improve the performance of new energy vehicle engine sealing rings,
the effects of the amount of Vulkanox ZMB2 antioxidant on the physical properties, thermal oxygen
aging properties, dynamic mechanical properties, and thermal stability of EPDM blend rubber were
systematically studied using a combination of 4,4-bis (phenylisopropyl) diphenylamine (Naugard 445) and
2-mercaptomethylbenzimidazole zinc salt (Vulkanox ZMB2) as antioxidants. The results show that compared
with blank rubber, the combination of Naugard 445 and Vulkanox ZMB2 can greatly improve the aging
resistance of EPDM vulcanizate; With the increase of the amount of anti-aging agent Vulkanox ZMB2, the
mechanical properties of the vulcanized rubber show little change, but the heat and oxygen aging properties
of the vulcanized rubber increase. After high-temperature aging, the change rate of tensile strength and
elongation at break decrease; The compression permanent deformation first decreases and then increases.
When the dosage of anti-aging agent Vulkanox ZMB2 is 0.3, the physical and mechanical properties, thermal
oxygen aging performance, and compression set performance of EPDM blend vulcanizate are the best,
meeting the requirements for the performance of new energy vehicle sealing rings.
Key words: EPM rubber; EPDM rubber; blending; antioxidant ZMB2; heat aging resistance; thermal stability;
dynamic mechanical properties
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户的一致好评。
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星产品 480/95R29。未来，赛轮集团将继续秉承 “ 做一条好轮胎 ” 的使命，专注于橡胶轮胎技术和服务的开发应用，
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编自 “ 赛轮集团 ”
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