摘要
以正硅酸乙酯为原料,在盐酸溶液的催化下,水解缩合制成硅树脂。再配上各种颜料、填料和助剂,以水为溶剂,制备环保型耐高温涂料。本研究讨论了颜填料(玻璃粉)、二甲基甲酰胺(DMF)、偶联剂、、固化温度等对涂料性能的影响。实验发现:正硅酸乙酯制备耐高温涂料热固化后呈无机膜。随着温度的升高,固化膜对铁板的附着力和硬度显著提高,附着力达1级,铅笔硬度大于6H。玻璃粉在500℃以上可熔融成膜,使涂料能耐更高的温度;DMF和偶联剂均能减少涂膜开裂倾向。
Silicone resin was prepared from tetraethyl orthosilicate （TEOS） precursors through hydrolysis and condensation under catalyzing of hydrochloric acid. A environmental friendly heat resistant coating was prepared by TEOS, pigments, fillers, additives and water as solvent. The influence of pigments, DMF, coupling agent, curing temperature on the performance of coating was discussed. The results showed, that heat resistant coating prepared by TEOS became an inorganic film after curing. As the temperature increased, the adhesion and the hardness of the cured fihn were significantly increased, with adhesion grade 1 and hardness 6H. Superfine glass powder will melt over 500 ℃, which could enhance the heat resistance of film DMF and coupling agent both could reduce cracking tendency of the coating.
出处
《涂料工业》
CAS
CSCD
北大核心
2012年第1期46-49,共4页
Paint & Coatings Industry
基金
广东省省部产学研项目(2010A090200046)
广东省科技攻关项目(2009A080303011)
