苯丙自交联改性无皂乳液表面施胶剂的合成

Synthesis of Modified Self-crosslinking Styrene-acrylic Soap-free Emulsion as Surface Sizing agent

关键词:  苯丙乳液  无皂乳液聚合  表面施胶剂  自交联  反应型乳化剂

Key Words:styrene-acrylic soap-free emulsion  surface sizing agent  functional monomers  reactive emulsifier

摘要:采用无皂乳液聚合的方法合成了苯丙乳液表面施胶剂。加入功能性单体双丙酮丙烯酰胺（DAAM）、丙烯酰胺（AM），复配非离子反应型乳化剂KL-100（烯丙氧基壬基酚聚氧乙烯醚硫酸铵）与阴离子反应型乳化剂COPS-1（烯丙氧基羟丙基磺酸钠），并对乳液聚合的工艺参数进行了实验研究，得到最佳反应条件为：硬软单体比例（质量比）1∶1，反应温度75～80℃，乳化剂用量4%，功能性单体用量2%。利用该乳液表面施胶后的纸页具有良好的抗水性和光泽度。

Abstract:The synthesis of styrene-acrylic emulsion by soap-free emulsion polymerization was researched in this paper. Functional monomers， such as diacetone acrylamide (DAAM)，acrylamide(AM)，and reactive emulsifier formulated by non-ionic reactive surfactant KL-100 and anionic reactive emulsifier COPS-1, were added in the emulsion system. The optimum conditions for emulsion polymerization were obtained: the ratio of hard and soft monomers is 1, reaction temperature 75~80℃, emulsifier dosage 4wt%，and functional monomers dosage 2wt%. Both water resistance and gloss of the paper surface sized by the emulsion were very high.