摘要
以三乙醇胺和硼酸为原料,合成了硼酸氨基三乙酯。研究了原料配比、反应温度及反应时间对产率的影响,在原料摩尔比1:1、温度160℃的条件下反应180min,硼酸氨基三乙酯的产率达到87%。由于N元素的引入,硼酸氨基三乙酯的水解稳定性良好,且在无水乙醇溶液中水解缓慢,能够满足工业上制备硼酸氨基三乙酯涂层的工艺要求。以硼酸氨基三乙酯为先驱体在氮气气氛中于400℃和800℃条件下热解,其热解产物为氮化硼和碳化硼的混合物。400℃时氮化硼的结晶程度较低,800℃时结晶程度提高。氮化硼涂层对高硅氧、无碱玻璃纤维织物具有显著的增强作用并可明显改善其耐温性能。
With triethanolamine and boric acid as raw materials, triethanolamine borate was synthesized. In this process, the effects of raw materials mixing ratio, reaction temperature and reaction time on the yield were investi gated. Due to the introduction of N element, the hydrolytic stability of triethanolamine borate was good and could meet the technological requirements for commercially producing boron nitride coating material by a process of pyro lyzing triethanolamine borate as precursor in nitrogen gas atmosphere at 400 ℃ and 800 ℃, resulting in a mixture of boron nitride and boron carbide. Boron nitride exhibited lower crystallization at 400 ℃and higher crystallization at 800℃. The boron nitride coating provided significant ble improvement of their heat resistance. reinforcement for high silica and E glass fabrics and remarka
出处
《玻璃纤维》
CAS
2013年第1期35-40,共6页
Fiber Glass
