摘要
分别以正硅酸四乙酯(TEOS)和二甲基二乙氧基硅烷(DDS)为前驱体,无水乙醇为溶剂,氨水和盐酸为催化剂,配制成碱性和酸性溶胶,通过溶胶—凝胶法得到玻璃疏水改性剂,通过涂覆方式对玻璃表面进行改性可提高其疏水性。通过单因素法研究了碱量、酸量以及碱性和酸性溶胶比例对疏水改性效果的影响,结果表明盐酸与去离子水相对用量1∶1,氨水用量1.83 g,碱性溶胶与酸性溶胶质量比4∶1进行复配时得到的改性剂效果最好,改性后玻璃表面与水的接触角达113.6°。
Hydrophobic agents of glass surface are prepared by sol -gel method with tetraethyl orthosili- cate （TEOS） and dimethyldiethoxylsilane （DDS） as precursors, ethanol as solvent, ammonia and hydro- chloric acid as catalysts. The hydrophobicity of glass surface is improved by coating method. The effect of the amount of ammonia and hydrochloric acid and the ratio of alkaline sol to acidic sol on hydrophobicity property are discussed by single factor experiment. The results show that the optimum conditions are the ratio of hydrochloric acid to deionized water 1 ： 1, the amount of ammonia 1.83 g and the ratio of alkaline sol to acidic sol 4 ： 1. In this conditions,the contact angle of water to glass is 113.6 degrees.
出处
《河南化工》
CAS
2016年第6期20-22,28,共4页
Henan Chemical Industry
关键词
正硅酸四乙酯
二甲基二乙氧基硅烷
疏水
润湿
tetraethyl orthosilicate
dimethyldiethoxylsilane （DDS）
hydrophobic
wetting
