反应型乳化剂在微乳液皮革柔软增强剂制备中的应用探索

Reactive emulsifier's application in leather enforcing agent with softness effect by microemulsion copolymerization

在前期微乳皮革增强复鞣剂研究的基础上,优化出了反应型乳化剂的最佳合成条件,制备出反应型乳化剂——马来酸酐十二醇单酯钾盐,代替外乳化剂十二烷基硫酸钠,进行无皂微乳液聚合制备皮革柔软增强剂(EM)。将制得的EM用于猪二层革的增强处理。结果表明:反应型乳化剂与混合单体(丙烯酸丁酯90g、甲基丙烯酸甲酯75g和二乙烯基苯15g)的质量分别为120g和180g。活性单体丙烯酸质量为10g时对皮革的柔软增强效果最好。横向撕裂强度提高58.8%,纵向提高37.4%,成革的横向和纵向的撕裂强度趋于一致,崩破强度提高54.1%。

The synthesis condition of reactive emulsifier- potassium salt of maleic anhydride lauryl alcohol monoester was optimized via orthogonal test. Using reactive emulsifier as a substitute for conventional emulsifier, the leather enforcing agent with softness effect （ELM） was synthesized by microemulsion copolymerization. The experimental product was used in enforcing treatment of chrome tanned pig skin splits. The effect of the product was observed by measuring leather＇s tensile strength, tearing strength and bursting strength. The result showed when the reactive emulsifier and monomer mixture were 120g and 180g respectively, and the active monomer- acrylic acid was 10g, the enforcing effect was best. The horizontal tear strength was improved by 58.8%, while longitudinal was improved by 37.4% so that the tearing strength was the same as the tensile strength, which was beneficial to further-processing of the leather. In addition, burst strength was improved by 54.1%.