低温环保型聚丙烯酸酯黏合剂的合成及应用

Synthesis and application of low temperature ecological polyacrylate adhesive

分析了影响环保型聚丙烯酸酯乳液黏合剂涂料印花性能的因素,通过改变软硬单体配比、功能单体(AA)用量、链转移剂十二烷基硫醇用量、交联单体的选择及其用量、焙烘温度等,优化了黏合剂的合成工艺,即软硬单体配比为1.33,功能单体AA为1.5%,十二烷基硫醇为0.23%,交联单体NT为2.0%;将合成的丙烯酸酯黏合剂应用于涂料印花,其优化工艺为:预烘温度80,时间3 min,焙烘温度130,时间4 min。测试结果表明,印花织物的耐摩擦色牢度、耐洗色牢度及K/S值均良好。

Ecological polyacrylate adhesive is applied to pigment printing by pad-dry-cure method. Factors exerting influence on printing behaviors are analyzed, including the ratio of hard monomers to soft monomers, dosages of functional monomer and chain transfer agent, type and dosage of crosstinking monomer, and curing temperature. The optimal polyacrylate adhesive can be obtained under conditions of ratio of hard monomers to soft monomers 1,33, functional monomer AA 1.5%, dodecyl mercaptan 0.23% and crosslinking monomer NT 2.0%. The optimum pigment printing process with synthetic polyacrylate adhesive is pre-drying at 80 ℃ for 3 min and curing at 130 ℃ for 4 rain. The printings have good K/S value and color fastness to washing and rubbing.