SKTFT-50共聚氟硅橡胶的低温性能研究  

Study on Cold Property of Copolymer SKTFT-50

作　　者：苏正涛[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《特种橡胶制品》2003年第2期12-14,共3页Special Purpose Rubber Products

摘　　要：研究了SKTFT 5 0共聚氟硅橡胶的性能 ,尤其是其低温性能 ,并与通用氟硅橡胶SKTFT 1 0 0进行了对比。试验结果表明 ,SKTFT 5 0具有优异的低温性能和较好的耐油性能。SKTFT 5 0在 -60℃下的压缩耐寒系数为 0 4 6,而SKTFT 1 0 0仅为 0 0 6。SKTFT 5 0在 -70℃下的压缩耐寒系数仍达 0 2 3。DMTA分析也表明SKTFT 5 0共聚氟硅橡胶的损耗模量峰在 -86 3℃ ,SKTFT 1 0 0氟硅橡胶在 -5 5 1℃ ,SKTFT 5 0比SKTFT 1 0The property of methyl(3,3,3-trifluoropropyl) siloxane-dimethyl siloxane copolymer(SKTFT-50)has been investigated in this paper.The coefficient of cold-resistance under compression for the copolymer is 0.46 and 0.23 at -60℃and-70℃,respectively.While fluorosilicone rubber SKTFT-100 is 0.12,0.06 and 0.02 at -55℃,-60℃and -70℃,respectively.The glass transition temperature(Tg)of the copolymer is -86.3℃,while that of fluorosilicone rubber is -55.1℃ determined by loss modulus of DMTA.The results showed that SKTFT-50 had better cold property and oil resistance than SKTFT-100.

关 键 词：SKTFT-50 共聚 氟硅橡胶 低温性能 研究 动态机械热分析 

分 类 号：TQ333.93[化学工程—橡胶工业]