多官能度硅烷寡聚物的合成及其对马口铁的防腐性能  

Synthesis of a Polyfunctional Silane Oligomer and Its Corrosion Resistance for Tinplate

作　　者：孙成军[1] 王柱[1] 刘海峰[1] SUN Cheng-jun;WANG Zhu;LIU Hai-feng(Institute of lndustrid Technology, Chinese Academy of Science （ Guangzhou ）, Guangzhou 511458, China)

机构地区：[1]广州中国科学院工业技术研究院,广东广州511458

出　　处：《化学与粘合》2017年第6期427-429,434,共4页Chemistry and Adhesion

基　　金：2015年度南沙区科技计划资助项目(编号:2015KF026)

摘　　要：以二甲苯为溶剂,苄基三甲基溴化铵为催化剂,将2-(3,4-环氧环己烷基)乙基三甲氧基硅烷(KH-530)与均苯四甲酸酐(PMDA)反应,红外分析显示反应物PMDA的酸酐特征峰(νC=O,1860cm^(-1)与1769cm^(-1))消失,产物中出现了酯基吸收峰1730cm^(-1),表明制得了多官能度硅烷寡聚物(PSO)。将KH-530及PSO水解后分别制备马口铁片防护涂层,测试涂层的机械性能、热稳定性和防腐蚀性能。结果表明,PSO涂层的硬度达到了4H,而KH-530涂层硬度仅为1H;两者耐冲击性能均超过100cm·kg,耐弯曲性能均达到1级;热重分析表明,在高温下PSO涂层的热稳定性较好,低温区热稳定性略有降低;极化曲线拟合数据表明,PSO涂层的腐蚀速率0.1033mm/a,优于KH-530涂层;PSO涂层耐盐雾近500h无明显锈蚀。A polyfunctional silane oligomer （PSO） is synthesized by the reaction between 2-（3, 4-epoxycyclohexyl） ethyhrimethoxysilane （KH- 530） and pyromellitic anhydride （PMDA） with the xylene as solvent and benzyhrimethyl ammonium bromide as catalyst. The FFIR shows that the characteristic peaks （vc-o, 1860cm-1 and 1769cm-1） of PMDA disappears and the product shows a ester group absorption peak in 1730cm-1, which in- dicates that the polyfunctional silane oligomer （PSO） is obtained. The KH-530 and PSO are hydrolyzed to prepare the tinplate protective coating in order to test their mechanical properties, thermal stability and corrosion resistance. Both of the KH-530 and PSO coatings＇ impact performances are more than 100cm＇kg and their bending properties reach level 1. However the KH-530 coating only has a hardness of 1H while the PSO coating＇s is 4H. The thermogravimetrie analysis shows that the PSO coating has a better thermal stability than the KH-530 coating at high temperature, but it slightly lowers in the low temperature zone. The polarization curve fitting data show that the PSO coating has a lower corrosion rate of 0.1033mm/a. The PSO coating can almost stand nearly 500h salt spray eorrosion and has no obvious corrosion.

关 键 词：2-(3 4-环氧环己烷基)乙基三甲氧基硅烷 均苯四甲酸酐 防腐蚀性能 

分 类 号：TQ264.1[化学工程—有机化工]