为获得高硬度透明复合涂膜,加快其工业应用,在水性条件下,以价格低廉的y-(2,3-环氧丙氧基)丙基三甲氧基硅烷(GPTMS)和一水软铝石为主要原料,以硝酸溶液控制pH,通过硬度测试和红外定量分析,研究了GPTMS/AIOOH透明硬涂膜的制备工艺.结果表明:涂膜的硬度可由Si-O-Si和Si-O-Al含量控制.将质量比为100:46:50:2.8的GPTMS水解产物、AlOOH、去离子水和硝酸溶液在80℃反应2h,得到预聚物,将其在125℃热固化2.5h,可得到铅笔硬度达4H的透明涂膜.
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