高固含量聚醚/聚酯型阴/非离子水性聚氨酯性能研究  

Characterization of Polyether/Polyester Based Anionicnonionic Waterborne Polyurethane with High Solid Content

作　　者：韩颜庭[1,2] 董伟[1,2] 陈政[3] 辛中印[1,2] 

机构地区：[1]皮革化学与工程教育部重点实验室(四川大学),四川成都610065 [2]四川大学制革清洁技术国家工程实验室,四川成都610065 [3]四川省纤维检验局,四川成都610015

出　　处：《皮革科学与工程》2015年第1期24-29,共6页Leather Science and Engineering

摘　　要：以乙氧基封端聚合物二醇(N-120)和二羟甲基丁酸(DMPA)为亲水单体,异佛尔酮二异氰酸酯(IPDI)、六亚甲基二异氰酸酯(HDI)、聚四氢呋喃二醇(PTMG)、聚酯二醇(PEBA)为主要原料,制备了高固含量(45%)的聚酯型阴/非离子水性聚氨酯和聚醚型阴/非离子水性聚氨酯(PTMG-PU/PEBA-PU)。研究表明:两种乳液粒径呈双峰宽分布;PTMG-PU和PEBA-PU膜存在适度的微相分离,PEBA-PU膜的表面粗糙度和水接触角大于PTMG-PU,而耐液体介质性不如PTMG-PU;PTMG-PU和PEBA-PU的抗张强度分别为29.15 MPa和25.60 MPa,断裂伸长率分别为745.0%和786.7%,结合DMA测试结果表明涂膜为韧性断裂,力学性能较好;DSC和TG测试结果表明涂膜的耐寒性能和耐热性能较好。Polyether/Polyester based anionic-nonionic waterborne polyurethane （PTMG-PU and PEBA-PU） was prepared by using ethoxylated capped polymeric diol （N-120） and dimethylolpropinoic acid （DMPA） as hydrophilic monomer, isophorone diisocyanate （IPDI）, hexamethylene diisocyanate （HDI）, polytetramethylene glycol （PTMG） and polyester diol （PEBA） as main materials. The studies showed that： the particle sizes of PTMG-PU and PEBA-PU present bimodal and wide distribution. Both FFMG-PU and PEBA-PU have microphase separation. The surface roughness and water contact angle of PEBA-PU is bigger than PTMG-PU while the liquid medium resistance of PEBA-PU is inferior to PTMG-PU. The tensile strength of PTMG-PU and PEBA-PU are 29.15 MPa and 25.60 MPa, the elongation at break of PTMG-PU and PEBA-PU are 745.0% and 786.7%, based on the DMA results, the films of PTMG-PU and PEBA-PU are ductile fracture and have good mechanical properties. The results of DSC and TG show that the films of PTMG-PU and PEBA- PU have good cold resistance and heat resistance performance.

关 键 词：高固含量 聚四氢呋喃二醇 聚酯二醇 阴/非离子 水性聚氨酯 性能 

分 类 号：TS529.5[轻工技术与工程—皮革化学与工程]