含氟自交联丙烯酸树脂皮革涂饰剂的制备与性能

Synthesis and Properties of Self-crosslinking Fluorinated Acrylic Resin Leather Finishing Agent

用丙烯酸丁酯（BA）、甲基丙烯酸甲酯（MMA）、丙烯酸羟丙酯（HPA）、甲基丙烯酸十二氟庚酯（DFMA）、双丙酮丙烯酰胺（DAAM）、甲基丙烯酸（MAA）为单体,经过混合单体的预乳化,用十二烷基硫酸钠（SDS）、AEO-9、16-18醇为乳化剂,在过硫酸铵（ASP）引发剂作用下通过乳液聚合法合成了一种含氟自交联型丙烯酸树脂乳液。探讨了不同单体配比对乳液及涂膜性能的影响。研究发现当主要单体配比为w（BA）∶w（MMA）∶w（DFMA）∶w（HPA）=46.6∶32.2∶6∶3、DAAM用量w（DAAM）=2.0%、MAA用量w（MAA）=1.0%1.3%时,乳液反应稳定,单体转化率最高,用于皮革涂饰时涂膜的拉伸强度、耐湿擦性能等优于常规丙烯酸树脂涂饰剂。

A fluorine-containing self-crosslinking acrylic resin was synthesized by emulsion polymerization using butyl acrylate （BA）, methyl methacrylate （MMA）, hydroxypropyl acrylate （HPA）, dodecafluoroheptyl methacrylate（DFMA）, diacetone aerylamide（DAAM） and methacrylic acid（MAA）as monomers which preemulsified, SDS, AEO-9 and C16-18 mixed alcohol as mixed emulsifier and ammonium persulfate （ASP） as initiator. The influence of different monomer ratio on emulsion stability and coat performances was investigated. The results showed that the stable fluorinated acrylic latex was obtained with the highest monomer conversion rate when monomer ratio w（BA） ：w （MMA） ：w （DFMA） ：w （HPA）is 46.6：32.2：6：3, w （DAAM） is 1.2%,and w （MA） is from 1.0% to 1.3%. It confers leather coat superior tensile strength and resistance to wet rubbing compared with conventional acrylic resin.