云母片含量对三元乙丙橡胶性能的影响  

Effect of Mica Sheet Content on Gas Barrier Characteristics of EPDM

作　　者：樊玉瑞 张正国 孙友谊[1] 雷青娟[2] 刘奇超 刘子萱 FAN Yu-rui;ZHANG Zheng-guo;SUN You-yi;LEI Qing-juan;LIU Qi-chao;LIU Zi-xuan(School of Materials Science and Technology,North University of China,Taiyuan 030051,Shanxi,China;School of Chemistry and Chemical Engineering,North University of China,Taiyuan 030051,Shanxi,China;Department of Materials Science and Engineering,Shanxi Institute of Technology,Yangquan 045000,Shanxi,China)

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]中北大学化学与化工学院,山西太原030051 [3]山西工程技术学院材料科学与工程系,山西阳泉045000

出　　处：《合成材料老化与应用》2024年第1期20-24,共5页Synthetic Materials Aging and Application

基　　金：山西省基础研究计划联合资助项目(太重)(TZLH20230818009);山西省成果转化项目(202104021301059);山西省科技创新团队专项基金(202204051001006);阳泉市重点研发计划项目(2023JH055)资助。

摘　　要：采用熔融共混技术,以三元乙丙橡胶(EPDM)为基体材料,四甲基秋兰姆二硫化物(TMTD)为硫化剂,氧化锌、硬脂酸(SA)、硫黄等为配合剂,云母片为填料制备了三元乙丙橡胶/云母片复合材料。对云母片进行了红外和电镜扫描分析;对EPDM/云母片复合材料进行了力学性能、红外、SEM、TG、水接触角、交联密度、吸水性和气体阻隔性能测试;考察了云母片含量对复合材料性能的影响。结果表明,当云母片含量为15.33%(wt.)时,复合材料的吸水率达到最低,在沸水中浸泡12h,其吸水率仅为0.18%;气体阻隔性能达到最佳效果,透气系数仅为1.345×10^(-10)cm^(2)/(Pa·s),较未掺杂云母片的空白EPDM硫化胶下降71.1%。EPDM/云母片复合材料具有良好的力学性能、热稳定性和气体阻隔特性。EPDM/mica sheet composites were prepared by using melt blending technology,EPDM rubber(EPDM)as the matrix material,tetramethylthiuram disulfi de(TMTD)as the vulcanizing agent,zinc oxide,stearic acid(SA)and sulfur as the compounding agent,and mica flakes as fillers.Infrared and electron microscope scanning analysis were carried out on mica sheets.The mechanical properties,IR,SEM,TG,water contact angle,cross-linking density,water absorption and gas barrier properties of EPDM/mica sheet composites were tested.The effect of mica flake content on the properties of the composites was tested.The results show that when the content of mica sheet is 15.33%(wt.),the water absorption rate of the composite material reaches the lowest,and the water absorption rate is only 0.18%after immersion in boiling water for 12h.The gas barrier performance achieved the best effect,and the air permeability coeffi cient was only 1.345×10^(-10)cm^(2)/(Pa·s),which was 71.1%lower than that of the blank EPDM vulcanized rubber without doped mica sheet.EPDM/mica sheet composites have good mechanical properties,thermal stability and gas barrier properties.

关 键 词：三元乙丙橡胶 云母片 气体阻隔 

分 类 号：TQ333.4[化学工程—橡胶工业]