氧化硅-氧化锆复合高温粘合剂的制备  

Preparation of SiO_2-ZrO_2 compound high temperature adhesive

作　　者：何召品[1] 石元昌[1] 孙立波[1] 李波[1] 袁野[1] 刘久荣[1] 

机构地区：[1]山东大学材料科学与工程学院,山东济南250061

出　　处：《山东大学学报（工学版）》2013年第1期104-108,共5页Journal of Shandong University（Engineering Science）

摘　　要：为提高传统硅酸盐无机粘合剂的耐高温性能,采用溶胶-凝胶法以正硅酸乙酯和氯氧化锆为原料将氧化锆引入粘合剂体系,制备出新型复合高温粘合剂。在对其结构、物相组成、热量变化、形貌进行表征的基础上研究了其热稳定性和粘结性能。结果表明,pH值对反应过程有很大的影响,pH=3为最优pH值。制备方法对复合粘合剂的性能有较大的影响,分散法比原位生成法更加优异。原料配比是粘合剂性能的重要影响因素,当硅锆摩尔比为1∶3时可制得粘结性能和热稳定性较好的复合粘合剂。In order to improve the high temperature resistant performance of traditional silicate inorganic adhesive, the new-type compound high temperature adhesive was prepared by sol-gel method with tetraethyl orthosilicate and zirconi- um oxychloride. Its thermal stability and bonding performance were studied by characterizing the structure, phase com- position, heat change and appearance. The results showed that pH was of great influence on the sol-gel reaction process, and the optimal pH was 3. The preparation methods had obvious influence on the microstructure of SiO2-ZrO2 compound adhesive. Dispersion method was better than the in situ synthesis method for preparing the compound adhe- sive. The molar ratio of raw materials was an important influencing factor on the performance of the compound adhe- sive. The SiO2-ZrO2 compound adhesive could provide good bonding performance and good thermal stability when the Si-Zr molar ratio was 1 ： 3.

关 键 词：溶胶-凝胶法 硅溶胶 锆溶胶 高温 复合粘合剂 

分 类 号：TQ433.9[化学工程]