影响单组分室温硫化硅橡胶固化性能的因素探讨  

Discussion on the Factors Affecting the Curing Performance of One-component RTV Silicon Rubber

作　　者：邓映礼 陈炳耀 杨善杰 吴健涛 DENG Yingli;CHEN Bingyao;YANG Shangjie;WU Jiantao(Guangdong Sanvo Chemical Industry Technology Limited,Zhongshan 528429,China;Guangdong Sanvo Holdings Ltd.,Zhongshan 528325,China)

机构地区：[1]广东三和化工科技有限公司,广东中山528429 [2]广东三和控股有限公司,广东中山528325

出　　处：《化学与粘合》2024年第4期356-358,共3页Chemistry and Adhesion

摘　　要：为有效提升硅橡胶的固化速度、改善建材粘接工作效率,以α,ω-二羟基聚二甲基硅氧烷(107胶)为基胶,纳米碳酸钙、气相法白炭黑作为补强填料,辅助添加交联剂、偶联剂、催化剂等功能助剂,制得一种固化速度快、表干时间短的单组分室温硫化硅橡胶。试验中,逐一考察了补强填料、交联剂、催化剂等关键原料用量对硅橡胶固化性能的影响。结果发现,以80000 m Pa·s黏度的107胶为基胶,使用80 nm的纳米碳酸钙填料100份,搭配7份甲基三丁酮肟基硅烷交联剂、0.2份催化剂,制得的单组分室温硫化硅橡胶在标准条件下[温度(23±2)℃,相对湿度(55±5)%]测得的表干时间为12 min,24 h固化深度为4.3 mm,胶料固化性能优异、贮存期长达12个月。In order to effectively improve the curing speed of silicone rubber and the bonding efficiency of building materials,a one-component room temperature vulcanized(RTV)silicone rubber with fast curing speed and short surface drying time is developed by using theα,ω-dihydroxy-polydimethylsiloxane(107 adhesive)as the base adhesive,the nano-calcium carbonate and fumed white carbon black as the reinforcing filler and other auxiliary additives,such as crosslinking agent,coupling agent and catalyst.The effects of the amount of reinforcing filler,crosslinking agent and catalyst on the curing properties of silicone rubber are investigated one by one.The results show that using the 107 adhesive with a viscosity of 80000 mPa·s as the base adhesive,100 parts of 80 nm nano-calcium carbonate as the filler,7 parts of methyl-tritone-ketoxime based silane crosslinking agent and 0.2 parts of catalyst will prepare a one-component of RTV silicone rubber,and under standard conditions[temperature is(23±2)℃,the relative humidity is(55±5)%],its measured surface drying time is 12 min,the curing depth is 4.3 mm in 24 h,the adhesive material has excellent curing performance and the storage period is up to 12 months.

关 键 词：室温硫化硅橡胶 固化性能 表干时间 固化深度 

分 类 号：TQ333.93[化学工程—橡胶工业]