甲基丙烯酸处理活性硅酸钙填充硅橡胶的性能  

Properties of Activated Calcium Silicate Filled Silicone Rubber Treated with Methacrylic Acid

作　　者：程朝霞[1,2] 彭小芹 季晓丽[1] 曾路[1] CHENG Zhaoxia;PENG Xiaoqin;JI Xiaoli;ZENG Lu(College of Material Science and Engineering,Chongqing University,Chongqing 400045;School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454003)

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]河南理工大学土木工程学院,焦作454003

出　　处：《材料导报》2018年第18期3261-3265,共5页Materials Reports

基　　金：国家自然科学基金(51402029);重庆大学大型仪器开放基金(2013121513);2015年地方高校国家级大学生创新创业训练计划项目(201510460009)

摘　　要：在蒸压反应釜中加入甲基丙烯酸(MAA)试剂及活性硅酸钙浆体,然后在一定温度下搅拌处理并干燥,得到MAAACS粉体材料。将MAA-ACS粉体加入硅橡胶中,研究其对硅橡胶性能的影响。通过XRD、SEM表征了粉体组成、形貌,采用TG、DSC研究了硅橡胶的热性能,同时通过拉伸及溶胀测试分析了硅橡胶的力学性能及其影响机理。结果表明,经MAA处理后,活性硅酸钙粉体的形貌及微观结构发生了变化。添加5%(质量分数)MAA-ACS粉体时,硅橡胶主分解温度提高76.6℃,起始分解温度和终点分解温度分别提高了33.6℃和108.6℃。添加MAA-ACS粉体后,硅橡胶的拉伸强度、伸长率、交联密度均有所增加。The methacrylic acid(MAA)reagent and the active calcium silicate(ACS)slurry interacted with each other in an autoclave reaction vessel at a certain temperature to obtain dry MAA-ACS powder.The MAA-ACS powder was added to a silicone rubber to improve its properties.The MAA-ACS powder composition and morphology were characterized by XRD and SEM.The thermal properties of the silicone rubber were studied by TG and DSC.The mechanical properties and the influencing mechanism were also analyzed by the tensile and swelling tests.The results showed that the morphology and microstructure of the MAA-ACS powder were different with the usual ACS.After adding 5%MAA-ACS powder,the main decomposition temperature,initial temperature and final decomposition temperatures of the silicone rubber were increased by 76.6℃,33.6℃and 108.6℃respectively.The tensile strength,elongation at break and crosslinking density of the silicone rubber were improved with the addition of MAA-ACS powder.

关 键 词：活性硅酸钙 甲基丙烯酸 硅橡胶 

分 类 号：TB332[一般工业技术—材料科学与工程]