水性聚氨酯的无溶剂法合成与性能研究  

Study on the Solvent-free Synthesis and Properties of Waterborne Polyurethane

作　　者：刘若望[1,2] 柴玉叶 张初银[3] 潘伟净 LIU Ruowang;CHAI Yuye;ZHANG Chuyin;PAN Weijing(College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China;Zhejiang Province Key Lab of Leather Engineering,Wenzhou 325035,China;Zhejiang Huafon Synthetic Resin Co.,Ltd.,Wenzhou 325200,China)

机构地区：[1]温州大学化学与材料工程学院,浙江温州325035 [2]浙江省皮革工程重点实验室,浙江温州325035 [3]浙江华峰合成树脂有限公司,浙江温州325200

出　　处：《皮革科学与工程》2023年第1期54-59,63,共7页Leather Science and Engineering

基　　金：温州市重大科技创新攻关项目(ZG2021008)。

摘　　要：以聚醚胺D2000、聚丙二醇PPG2000、异佛尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)为主要原料,采用无溶剂法制备了高脲基含量的水性聚氨酯,考察了合成路线、D2000含量对预聚体黏度和水性聚氨酯性能的影响。结果表明:采用D2000和PPG2000同时加入以及催化剂后添加的方式,得到的水性聚氨酯具有最低的预聚体黏度和最佳的综合性能。当软段中D2000含量为60%时,拉伸强度、100%模量、剥离强度较未加D2000的水性聚氨酯分别提高了39.8%、25.5%、51.8%,溶胀率和断裂伸长率分别降低了52.6%、31.3%。该研究为水性聚氨酯的无溶剂法合成以及聚醚胺在水性聚氨酯改性中的应用提供了有益的借鉴。A series of waterborne polyurethane(WPU)with high ureido group content were prepared by the solvent-free method using polyetheramine D2000,polypropylene glycol(PPG)2000,isophorone diisocyanate(IPDI)and dimethylolpropionic acid(DMPA)as the main raw materials.The effects of synthesis route and D2000 content on the viscosity of the prepolymer and the property of the resulting WPU were investigated.The results demonstrated that the WPU obtained by the simultaneous addition of D2000 and PPG2000 and post-addition of catalyst had the lowest prepolymer viscosity and the best comprehensive performance.Meanwhile,comparing with WPU without D2000,the tensile strength,100%modulus,peel strength and solvent resistance of WPU containing 60%D2000 were increased by 39.8%,25.5%and 51.8%,respectively,while its swelling ratio and elongation at break were decreased by 52.6%and31.3%,respectively.The present effort may provide guidance for the solvent-free synthesis of WPU and the application of polyetheramines in the modification of WPU.

关 键 词：无溶剂法 聚醚胺 脲基 水性聚氨酯 

分 类 号：TS529.5[轻工技术与工程—皮革化学与工程]