摘要
采用单因素二次回归正交试验研究了乙烯基类聚合物鞣剂共单体种类、配比与应用性能的相关性 ,通过比较不同共单体及其不同配比的乙烯基聚合物鞣剂复鞣革样与对比革样的性能 ,得到了不同共单体对鞣剂应用性能的贡献。结果表明 :含极性基团的共单体有利于复鞣革样抗张强度、耐湿热稳定性的提高 ,但影响革样的柔软性和革样胶原纤维的柔韧性 ;共单体丙烯酰胺对复鞣革样的丰满性具有特殊的贡献 ;鞣剂分子中引入丙烯酸酯类共单体有利于复鞣革样胶原纤维柔韧性的提高 ,且纤维柔韧性的提高与酯基碳链长短有关 ;
The correlations between the comonomer ration of vinyl polymer tanning agents and their application properties were studied by the two-power regression orthogonal design. Eight monomers (AN-acrylonitrile, AM-acrylamide, MAA-methyl acrylic acid, MMA-methyl methacrylate, VAc-vinyl acetate, MA-methyl acrylate, EA-ethyl acrylate, butyl acrylate) were separately chosen to copolymerize with acrylic acid (AA) to form the corresponding copolymers. Detecting ten proper indexes about the appliction properties for each copolymer used in retanning such as thickness increment ratio, shrinking temperature increment, phy-mech properties, compressible factor, etc. The effects of eight comonomers (AN, AM, MAA, MMA, VAc, MA, EA, BA) on the property indexes of the leather samples were also discussed. It has been found that the comonomers with polar groups can make increase in the tensile strength and the shrinking temperature of the leather samples. But they might affect the softness of the leather samples and the pliability of the collagen fibrils. The comonomer of AM makes outstanding contributinon to the fullness of leather samples. The acrylate comonomers, such as MA, EA, BA, can enable the pliability of collagen fibrils of retanned leather samples to improve and the improvement extents are related to the carbon chain length of the ester groups. The comonomers with methyl (such as MAA, MMA) can decrease the pliability of the leather smaples.
出处
《皮革化工》
2000年第5期1-5,共5页
Leather Chemicals
基金
国家自然科学基金资助项目!(59873017)
