文献类型：期刊文献

英文题名：Preparation and Properties of Autocatalytic Biobased Waterborne Polyol from Rosin Based Epoxy Resin

作者：Wu, Guomin[1,2] Chen, Jian[1,2] Yang, Zhaozhe[1,2] Jin, Can[1,2] Liu, Guifeng[1,2] Huo, Shuping[1,2] Kong, Zhenwu[1,2]

第一作者：吴国民;Wu, Guomin

通信作者：Wu, GM[1];Wu, GM[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat,Key Lab Bioma, Key Lab Chem Engn Forest Prod,Natl Forestry & Gra, Nanjing 210042, Peoples R China;[2]Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China

年份：0

外文期刊名：JOURNAL OF POLYMERS AND THE ENVIRONMENT

收录：;EI(收录号：20221411878169);Scopus(收录号：2-s2.0-85127340012);WOS:【SCI-EXPANDED(收录号:WOS:000776319900003)】；

基金：Funding was provided by the Natural Science Foundation of Jiangsu Province (Grant No.: BK20191134).

语种：英文

外文关键词：Two-component waterborne polyurethane; Amino polyol; Rosin; Autocatalysis; Crosslinking reaction rate

摘要：Due to the complex heterogeneous film forming process of two-component waterborne polyurethane (2K-WPU), the crosslinking reaction rate of 2K-WPU cannot meet the demand of efficient application in coatings. In order to improve the crosslinking reaction rate of 2K-WPU, a waterborne polyol containing tertiary amine groups was synthesized from rosin based epoxy resin and secondary amine compound, and then autocatalytic 2K-WPU was prepared by crosslinking the rosin based waterborne amino polyol with polyisocyanate. The structure of the polyol from rosin based epoxy resin was characterized with Fourier infrared (FT-IR) and nuclear magnetic resonance (NMR). The crosslinking kinetics and the crosslinked product of the rosin based waterborne amino polyol were also compared with a commercial acrylic polyol. It was shown from the results that the crosslinking reaction rate of the rosin based waterborne amino polyol was faster than that of the commercial acrylic polyol, which indicated the tertiary amine groups chemically bonded in the rosin based polyols could autocatalyze the crosslinking reaction of 2K-WPUs with catalysts free. The film of the rosin based waterborne amino polyol had excellent impact strength, adhesion, flexibility, hardness, gloss, fullness and solvent resistance, showing a good application prospect in the field of waterborne coatings.