摘要
制备了有望取代磷化和铬酸盐钝化的KH-560硅烷膜,采用红外反射吸收光谱(RA-IR)分析KH-560硅烷膜的成分和结构、电导率法在线监测硅烷偶联剂水解程度,以涂层拉伸法测试膜的结合强度,研究了影响该硅烷膜性能的各种制备工艺条件.试验研究表明不同水解试剂、硅烷溶液的浓度、水解时间和老化温度及时间等对膜的性能都有着明显的影响,其中水解试剂(水+甲醇)、浓度10 %左右、水解时间48 h;老化成膜温度100～200 ℃、时间1 h,所获硅烷膜性能较好.同时还说明,水解时间对膜性能的影响要大于浓度对膜性能的影响.
In this paper KH 560 silane film was prepared, which can replace the traditional pretreatment of phosphate or chromate. The influencing factors of preparation technology for KH 560 silane films were studied, including the components, structures, adhesive strength of film, and the hydrolysis degree of KH 560 coupling agent. The components and structures of KH 560 silane film were analyzed by the reflection-absorption infrared spectroscope, the hydrolysis degree of KH 560 coupling agent was measured by the conductivity testing method on-line, and the film adhesive strength was inspected by pull-off testing method. The results indicated that the properties of the film were significantly affected by hydrolysis solvent, hydrolysis time, concentration of KH 560 solution, ageing time and temperature. The best technology for preparing the film was: using water and methanol as hydrolysis agent, 10 % concentration of the solution, 48 hours for hydrolysis, 100~200 and 4 hours for ageing. At the same time, the effect of hydrolysis time on this film was more sensitive than that of solution concentration.
出处
《中国表面工程》
EI
CAS
CSCD
2004年第6期27-31,共5页
China Surface Engineering
关键词
硅烷模
涂层
表面处理
结合强度
silane coupling agents
coatings
surface pretreatment
adhesive strength
