双组分有机硅改性丙烯酸聚氨酯水性木器涂料的研制

STUDY ON PREPARATION OF TWO-COMPONENT ACRYLATE-POLY-UREATHANE WATER-BORNE WOOD COATING GRAFTED BY ORGANIC SILICON

摘要: 探讨了有机硅氧烷的种类、酸值、羟值、中和度和玻璃化温度对水性有机硅丙烯酸羟基树脂的外观、粘度、水溶性、分子质量大小、与固化剂的相容性和所配置清漆涂膜性能的影响。研究结果表明,使用含水解阻碍性官能团的有机硅氧烷单体、酸值在35～50mgKOH/g,羟基含量为3.5%左右,中和度约为85%,玻璃化转变温度为0～15℃,合成的树脂与固化剂配漆所得涂膜性能优异。

Abstract: Two-component acrylate-polyureathane water-borne wood coating grafted by organic silicon was prepared.Effects of kinds of organic silicone,acid value,hydroxyl content,neutralization degree,and glass transition temperature on the appearance,viscosity,water-solubility,consistency with curing agent,and film performance were studied.The optimal conditions were concluded as follows:hydrolytic hindering silicon is the suitable organic silicon monomer,acid value 35-50 mgKOH/g,hydroxy content about 3.5%,neutralization degree about 85%,and glass transition (temperature) 0-15℃.