MH含量对EPDM过氧化物硫化反应的影响  

Effect of MH content on the sulfurization reaction of EPDM peroxide

作　　者：姚皖生 董勇 王兆飞 张佰尧 王平 王晨曦 周意杨 丁运生 Yao Wansheng;Dong Yong;Wang Zhaofei;Zhang Baiyao;Wang Ping;Wang Chenxi;Zhou Yiyang;Ding Yunsheng(College of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;School of Materials and Chemical engineering,Anhui Jianzhu University,Hefei 230601,Anhui,China;Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices,Hefei 230009,Anhui,China)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009 [2]安徽建筑大学材料与化学工程学院,安徽合肥230601 [3]先进功能材料与器件安徽省重点实验室,安徽合肥230009

出　　处：《橡塑技术与装备》2023年第7期58-63,共6页China Rubber/Plastics Technology and Equipment

基　　金：安徽省重大科技成果工程化研发项目(201903c 08020009);安徽省重点研究与开发计划(202004a05020055);校地合作产业创新引导资金平台项目(JZ2020YDZJ0005);校地合作产业创新引导资金项目(JZ2019AHDS0006,JZ2020YDZJ0333)

摘　　要：橡胶的共混复合改性和硫化是提升橡胶性能,拓展橡胶应用领域的重要途径。本文通过熔融共混的方法制备了阻燃EPDM复合物,研究了阻燃EPDM复合物中氢氧化镁(MH)含量对三元乙丙橡胶(EPDM)过氧化物硫化反应的影响。结果表明,MH的加入降低了EPDM的焦烧时间t10;在160℃下,硫化速率随着MH的增加逐渐降低;而在170℃和180℃时,随着MH的增加,EPDM的硫化速率先降低后提高。不同硫化温度下EPDM复合物的力学性能测试结果表明,阻燃EPDM复合物硫化后的拉伸强度并没有随着硫化温度的升高而下降,MH对复合物中EPDM硫化过程交联结构的形成与稳定具有促进作用。Blending composite modification and vulcanization of rubber are important ways to improve rubber properties and expand rubber application fields.In this paper,flame retardant EPDM composites were prepared by melt blending,and the effect of Magnesium hydroxide(MH)content in flame retardant EPDM composites on peroxide vulcanization of EPDM rubber(EPDM)was studied.The results showed that the addition of MH reduced the scorching time t10 of EPDM;At 160℃,the vulcanization rate gradually decreases with the increase of MH;At 170℃and 180℃,with the increase of MH,the vulcanization rate of EPDM first decreases and then increases.The mechanical properties test results of EPDM composites at different vulcanization temperatures show that the tensile strength of flame-retardant EPDM composites after vulcanization does not decrease with the increase of vulcanization temperature.MH has a promoting effect on the formation and stability of cross-linked structure during the vulcanization process of EPDM in the composites.

关 键 词：三元乙丙橡胶 氢氧化镁 硫化反应 动力学 

分 类 号：TQ333.4[化学工程—橡胶工业]