丙烯酸酯类黏合剂无皂乳液聚合

Soap-free emulsion polymerization of acrylate binder

以甲基丙烯酸甲酯(MMA)为硬单体,丙烯酸丁酯(BA)为软单体,甲基丙烯酸(MAA)为功能单体,聚乙烯醇(PVA)为胶体保护剂,丙烯酸羟乙酯(HEA)为交联单体,采用无皂乳液聚合法合成了聚丙烯酸酯类黏合剂。优化的聚合工艺为:75～78℃聚合3 h,80℃保温1 h,胶体保护剂PVA 1%,交联单体HEA 3.0%,功能单体MAA 10%。合成的丙烯酸酯黏合剂含固量20%～22%,pH值稳定范围为6～14,应用性能较好。

The polyacrylate binder for pigment printing was prepared by soap-free emulsion polymerization,which taking methyl methacrylate （MMA） as hard monomer,acrylic butyl （BA） as soft monomer,methacrylic acid （MAA） as functional monomer, hydroethyl acrylate （HEA） as crosslinking monomer. Optimum synthesis process was PVA 1%, HEA 3.0%, MAA 10%, poly- merization at 75 -78 ℃ for 3 hours, further reaction at 80 ℃ for 1 hour. With a solid content of 20% -22%,the synthesized binder featured good application properties with a wide pH range from 6 to 14.