耐黄变非离子水性聚氨酯在皮革涂饰中应用  

Yellowing-resistant Nonionic Waterborne Polyurethane for Leather Finishing Applications

作　　者：潘鑫蕊 张凯 张彤 鲁振威 丁燕波 翁永根[1] 秦静 李国荣 曲家乐 于涵 段宝荣[1] PAN Xinrui;ZHANG Kai;ZHANG Tong;LU Zhenwei;DING Yanbo;WENG Yonggen;QIN Jing;LI Guorong;QU Jiale;YU Han;DUAN Baorong(Research Center for Leather and Protein of School of Chemistry&Chemical Engineering,Yantai University,Yantai 264005,China;TFL(Changzhou)Specialty Materials Co.,Ltd,Changzhou 256401,China;Jinjiang Quanjie Biotechnology Co.,Ltd,Quanzhou 362200,China;School of Pharmacy,Binzhou Medical University,Yantai 264005,China)

机构地区：[1]烟台大学化学化工学院皮革与蛋白质实验室,山东烟台264005 [2]德瑞(常州)特种材料有限公司,江苏常州256401 [3]晋江全杰生物科技有限公司,福建泉州362200 [4]滨州医学院药学院,山东烟台264005

出　　处：《皮革与化工》2024年第5期8-13,共6页Leather And Chemicals

基　　金：山东省中小企业提升项目(2022TSGC1354和2022TSGC2552);山东省自然基金面上项目(ZR2023MB147)。

摘　　要：聚氨酯涂饰材料在长时间受到紫外线或者热量影响下容易发生黄变,影响材料的美观和使用寿命。将紫外吸收剂UV-320和2-羟乙基二硫化物引入聚氨酯扩链中,制备耐黄变非离子水性聚氨酯,并应用于皮革喷涂,通过色差、稳定性、扫描电镜、X射线光谱等测试发现,在中涂工序加入50份数耐黄变非离子水性聚氨酯处理过的皮革的总色差△E为2.9,变色等级为1级,仅有很轻微色变。结合皮革拉伸强度和耐磨耗的基本性能指标,表明制备的耐黄变聚氨酯在保持皮革的力学性能、耐磨耗性能的同时,其耐黄变性能也大幅提高。Polyurethane finishing materials are susceptible to yellowing under the influence of ultraviolet light or heat for a long period of time,which affects the aesthetics and service life of the materials.The UV absorbent UV-320 and 2-hydroxyethyl disulfide were introduced into the polyurethane chain extension to prepare the yellow-resistant non-ionic waterborne polyurethane,and then applied to leather spraying.Through color difference,stability,scanning electron microscopy,X-ray spectroscopy and other tests,it was found that the total color difference△E of the leather treated with 50 parts of yellowing-resistant nonionic aqueous polyurethane in the step of mid-coating was 2.9,and the discoloration grade was 1 and only a very slight discoloration.Combined with the basic performance indexes of tensile strength and abrasion resistance of the leather,it shows that the prepared yellowing-resistant polyurethane can greatly improve the yellowing-resistant performance while maintaining the mechanical properties, abrasion-resistant performance of the leather.

关 键 词：非离子水性聚氨酯 皮革 涂饰剂 耐黄变 

分 类 号：TS529.5[轻工技术与工程—皮革化学与工程]