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Study of Polystyrene/Polyacrylate Core-Shell Emulsion Used for Hydrophilic Coatings
Author(s): 
Pages: 32-35
Year: Issue:  4
Journal: PAINT & COATINGS INDUSTRY

Keyword:  核壳乳液乳化剂二乙烯基苯16-己二胺耐水性;
Abstract: 合成了以聚苯乙烯为核、聚丙烯酸丁酯为壳的核壳乳液,并采用了丙烯酸作为功能性单体,使乳液在成膜时乳胶粒表面的羧基赋予涂膜亲水的性能.水性涂料的亲水和耐水性能很难并存,研究了该乳液用于亲水性涂料时,如何提高涂膜的耐水性和硬度.并分别从以下三个方面入手,首先,通过回归动力学方程和保证较少的聚合凝胶量,确定了乳化剂的用量;其次,调节了核壳所用的交联剂二乙烯基苯的用量;最后,采用1,6-己二胺与乳胶粒表面羧基反应,使乳液在成膜时进一步交联.综合以上工作使得涂膜的铅笔硬度达到2H,在水中浸泡48 h不水白、脱落.
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