文献类型：期刊文献

英文题名：Maleopimaric acid-modified two-component waterborne polyurethane for coating applications

作者：Si, Hongyan[1] Liu, He[1] Shang, Shibin[1,2] Song, Jie[3] Liao, Shengliang[1] Wang, Dan[1,2] Song, Zhanqian[1,2]

第一作者：Si, Hongyan

通信作者：Shang, SB[1];Song, ZQ[1];Shang, SB[2];Song, ZQ[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, State Forestry Adm,Key Lab Biomass Energy & Mat, Key & Lab Forest Chem Engn,Natl Engn Lab Biomass, Nanjing, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst New Technol Forestry, Beijing 100091, Peoples R China;[3]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2016

卷号：133

期号：15

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20160101752362);Scopus(收录号：2-s2.0-84955758015);WOS:【SCI-EXPANDED(收录号:WOS:000368731300019)】；

基金：This work was supported by the Joint Funds of the National Natural Science Foundation of China and Yunnan Provincial Government (No. U1202265).

语种：英文

外文关键词：maleopimaric acid; polyester polyol dispersion; rosin; two-component waterborne polyurethane

摘要：Maleopimaric acid (MPA), an important rosin derivative, was used to partially substitute isophthalic acid for the preparation of an anionic polyol (MPP) dispersion. The MPP dispersion was then applied to prepare a novel maleopimaric acid-modified two-component waterborne polyurethane (MPP-2K-WPU). The influences of NCO:OH molar ratio on the thermal properties, water absorption, surface free energy, and application properties of MPP-2K-WPU films were investigated. With increasing NCO:OH molar ratio, the thermal stability, pencil hardness, and ethanol resistance of MPP-2K-WPU films were improved, but the water resistance was enhanced firstly and then weakened. The surface free energy of MPP-2K-WPU films mainly depended on the dispersion interaction which was related to the structure of macromolecules. In addition, compared with the control sample of PP-2K-WPU(1.5:1) film, the MPP-2K-WPU(1.5:1) film exhibited improved thermal stability, water resistance, gloss, pencil hardness, and ethanol resistance. (c) 2015 Wiley Periodicals, Inc.