核/壳型有机硅改性苯丙乳液印花粘合剂的合成及应用

以过硫酸钠(NaPS)为引发剂,苯乙烯(St)和丙烯酸丁酯(BA)为核单体,甲基丙烯酸甲酯(MMA)、丙烯酸异辛酯(EHA)、苯乙烯(St)、丙烯酸(AA)为壳单体,采用种子乳液聚合法,制备了硬壳软核型苯丙乳液,对其进行有机硅改性,得到核壳型有机硅改性苯丙乳液(简称硅丙乳液),将其用作涂料印花粘合剂。研究了核壳单体质量比、丙烯酸用量、乙烯基硅油用量对乳液性能及印花性能的影响;并用热失重分析仪和透射电镜进行了表征。较佳配方为:核/壳单体质量比为6∶4,AA质量分数为2.5%,乙烯基硅油质量分数为10%～15%。该乳液的理化性能较好,耐热性优于核/壳苯丙乳液,将其用于涂料印花,改善了堵网性,印花织物的干、湿摩擦牢度,皂洗牢度,手感以及表观得色量可以达到工业用华润粘合剂的水平。

Synthesis and Application of Core/shell Silicone ModifiedStyrene-acrylic Emulsion for Pigment Printing

A novel polyacrylate emulsion with soft core-hard shell structure was prepared by core-shell seeded-emulsion polymerization , which was modified by vinyl silicone fluid .In the process of preparation , sty-rene （St） and n-butyl acrylate （BA） were set as the monomers of core structure , with methyl methacrylate （ MMA） , iso-octyl methacrylate （ EHA ） , styrene （ St ） and acrylic acid （ AA ） as the monomers of shell structure, with sodium persulfate （NaPS） as the initiator.The self-prepared core-shell emulsion was used as the binder for pigment printing and the performance of application was analyzed .Results showed that the mass ratio of core/shell was set as 6： 4, the dosage of functional monomer acrylic acid （ AA） was set as 2.5%and vinyl silicone fluid （10%-15%） was added to achieve a good modification .The pigment printing experiments showed that the printed fabrics avoided the blocking problems , and had good rubbing fastness , soaping fast-ness, brilliant color, and the handle of printing fabrics was improved .