棉织物的聚羧酸无甲醛免烫整理

摘要

为促进无甲醛免烫整理剂的推广应用，将自制聚羧酸无甲醛免烫整理剂（ LMP）用于棉织物的免烫整理，以整理后织物的折皱回复角、断裂强力、撕破强力和白度为主要评价指标，通过单因素试验，确定了LMP较佳的整理工艺：LMP质量浓度为300 g／L，催化剂质量浓度为整理剂的10％，整理液 pH 值为2�0～2�5，焙烘温度为170℃，焙烘时间为3 min。整理后纯棉白色府绸的折皱回复角大于260°，断裂和撕破强力保留率分别为55�7％和73�1％，白度由77％降至72％，外观平整度接近3�5级。与其他免烫整理剂比较，免烫效果优于已商业应用的2种无甲醛免烫整理剂，免烫效果及其耐洗性与丁烷四羧酸相当，比改性二羟甲基二羟基乙烯脲类整理剂稍差。%In order to promote the wide application of formaldehyde⁃free durable press finishing agent, a self⁃prepared polycarboxylic acid formaldehyde⁃free durable press finishing agent ( LMP) was used to finish the cotton fabrics and the suitable application conditions of LMP were determined by evaluating the wrinkle recovery angle, breaking strength, tear strength and whiteness of the finished cotton fabrics in single factor experiments. The optimum conditions are as follows:LMP dosage 300 g/L, catalyst dosage 10% of LMP, pH of 2�0-2�5, curing temperature 170℃ and curing time 3 min. After finishing, wrinkle recovery angle is larger than 260°, breaking and tear strength retention are 55�7% and 73�1%, respectively, whiteness decreases from 77% to 72%, and smoothness appearance rating is approximately 3. 5. Comparing with the other durable press finishing agents, the durable press performance of LMP finished cotton fabric is better than those finished with two commercial used formaldehyde⁃free durable press finishing agents. LMP provides almost the same level of durable press performance and laundering durability as butane tetracarboxylic acid, but less effective than modified dimethylol dihydroxy ethylene urea.