摘要
以甲基二乙氧基硅烷(HS)、1,2-环氧-4-乙烯基环己烷(HEO)、贵金属催化剂为原料,合成有机硅增粘单体1,2-环氧环己烷基-4-甲基二乙基硅烷(EPSI);再以高含氢硅油、N-β-氨乙基-γ-氨丙基-三甲氧基硅烷(Z-6020)、EPSI、四乙氧基硅烷(TEOS)等为原料,制备得到PET薄膜底涂,应用于加成型有机硅胶与PET基材的粘接,并研究了不同物料配合比例对加成型有机硅橡胶与PET薄膜之间的粘接性能的影响。结果表明,制备有机硅增粘单体EPSI的最佳条件:HS、HEO的摩尔比为1∶2.5,贵金属催化剂为50ppm,反应温度为80～85℃,保温反应4h;PET底涂剂制备的最佳条件:EPSI、高含氢硅油、Z-6020、TEOS的最佳质量比为1∶0.5∶2∶1。将此有机硅底涂剂涂覆于PET表面,并将加成型硅橡胶做成薄片,作对比粘接实验,未加底涂PET与加成型硅橡胶剥离力0.13 N,用底涂剂处理PET与加成型硅橡胶剥离力为24.08 N,剥离强度也从0.005 N/mm上升到0.96 N/mm。且用底涂处理后,加成有机硅橡胶/PET的耐水、耐盐、耐酸碱、耐有机溶剂能力显著提升。
Methyldiethoxysilane(HS), 1,2-epoxy-4-vinylcyclohexane(HEO) and noble metal catalysts were used to synthesize EPSI, a silicone tackifying monomer. And then high hydrogen silicone oil, Z-6020, EPSI, TEOS were used to prepare the primer, which was applied to bond PET films with addition-formed silicones, and the ratio of different materials were also taken in consideration. The results showed that the optimum conditions for the preparation of EPSI were that the molar ratio of HS and HEO was 1:2.5, 50 ppm precious metal was used as catalyst, and the reaction temperature was 80~85 ℃ for 4 h. The best conditions to prepare the PET primer were that the best mass ratio of EPSI,high hydrogen silicone oil, Z-6020 and TEOS was 1:0.5:2:1. The silicone primer was applied to the surface of PET,and the silicone rubber was made into a thin sheet for comparative bonding experiments. The peeling force of the uncoated PET and the added silicone rubber was 0.13 N, while the peeling force of the coated one was 24.08 N, and the peel strength also increased from 0.005 N/mm to 0.96 N/mm. What’s more, after coating the primer, the performance of silicone rubber/PET was significantly improved in water resistance, salt resistance, acid and alkali resistance, and organic solvent resistance.
作者
董运生
杨若凝
靳浩田
任永霞
姚有为
DONG Yun-sheng;YANG Ruo-ning;JIN Hao-tian;REN Yong-xia;YAO You-wei(Tsinghua University, Guangdong Shcnzhen 518055, China)
出处
《当代化工》
CAS
2019年第3期441-444,458,共5页
Contemporary Chemical Industry
基金
深圳市新兴战略产业重点发展基金
项目号:JSGG20160331104855391
