以锆杂化苯基硅树脂制备耐高温涂料

Preparation of high-temperature-resistant paint with zirconium–phenyl silicone hybrid resin

以自制锆杂化苯基硅树脂为基料,二氧化钛、二氧化硅、玻璃粉、滑石粉和云母粉为颜填料,制备了一种耐高温涂料。利用热重分析仪、红外光谱仪和扫描电镜对涂膜进行了表征。讨论了颜基比、研磨时间和硅烷偶联剂用量对涂料性能的影响,得到最佳制备条件为:研磨时间45 min,颜基比0.8,硅烷偶联剂6%。随着处理温度升高,涂膜的附着力和铅笔硬度均有提高。所制涂膜在500°C灼烧后外观光滑平整,附着力达1级,铅笔硬度为6H。

A high-temperature-resistant paint was prepared from a home-made zirconium phenyl silicone hybrid resin with titania,silica,glass powder,talc powder,and mica powder as pigment and fillers.The coating obtained from the paint was characterized using thermogravimetric analyzer,infrared spectroscope,and scanning electron microscope.The effects of grinding time,pigment-to-binder ratio,and silane coupling agent content on its properties were studied.The optimal preparation conditions were determined as follows:grinding time 45 min,pigment-to-binder ratio 0.8,and silane coupling agent content 6%.The adhesion and pencil hardness of the coating were improved by increasing the temperature.The coating burnt at 500℃had a smooth and uniform surface,an 1-grade adhesion,and a pencil hardness of 6H.