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《Physical Testing and Chemical Analysis(Part A:Physical Testing)》 2018-02
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Structure and Properties of Solvent-Free High Solid Content Waterborne Polyurethane

WANG Zuoxiang;XIAO Xuemei;CAI Liang;LI Xianhui;Shanghai Key Laboratory of Engineering Materials Application and Evaluation,Shanghai Research Institute of Materials;  
With isophorone diisocyanate(IPDI),polybutylene adipate diol(PBA),dimethylolbutyric acid(DMBA)and butanediol(BDO)as the main raw materials,and in the case of not adding any oily solvent,the solvent-free high solid content waterborne polyurethane was synthesized,and the structure and properties of the solvent-free waterborne polyurethane emulsion and film were investigated.The results show that the viscosity of the solvent-free waterborne polyurethane emulsion increased with the increase of solid contents.The crystallinity of the polyurethane film increased with the increase of soft segment molecular weight and decreased with the increase of R value(the number ratio of NCO and OH).The tensile properties of the polyurethane film decreased slightly with the increase of solid contents.
【Fund】: 上海张江国家自主创新示范区专项发展资金重点项目(201701-HK-C1085-016)
【CateGory Index】: TQ317
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