文献类型：期刊文献

英文题名：Synthesis, Characterization, and Properties of Polyols from Hydrogenated Terpinene-Maleic Ester Type Epoxy Resin

作者：Wu, Guo-Min[1] Kong, Zhen-Wu[1] Huang, Huan[1] Chen, Jian[1] Chu, Fu-Xiang[1]

第一作者：吴国民

通信作者：Kong, ZW[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key & Open Lab Forest Chem Engn, State Forestry Adm, Nanjing 210042, Peoples R China

年份：2009

卷号：113

期号：5

起止页码：2894-2901

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20092912189691);Scopus(收录号：2-s2.0-67649975310);WOS:【SCI-EXPANDED(收录号:WOS:000267994500020)】；

基金：Contract grant sponsor: National Natural Science Foundation of China; contract grant number: 30571465.; Contract grant sponsor: National Natural Science Foundation for Distinguished Young Scholars of China; contract grant number: 30325031.

语种：英文

外文关键词：polyurethanes; resins; synthesis

摘要：Three kinds of polyfunctional polyols with hydroxyl values of 180-320 mg/g were prepared by the reaction of hydrogenated terpinene-maleic ester type epoxy resin with secondary amines (diethylamine, N-methylethanolamine, and diethanolamine), and the chemical structures were characterized by Fourier transform infrared spectroscopy and NMR spectroscopy. These polyols were used in place of commonly used polyols to prepare two-component polyurethanes when reacted with polyisocyanates. The crosslinking reactions of the polyols with polyisocyanate could be catalyzed by the tertiary amine groups included in the polyols, and the reaction rate was affected by hydrochloric acid and the polarity of the solvents. The mechanical, water-resistance, and chemical-resistance properties of the crosslinked products of the polyols were evaluated by standard tests, and the thermal properties were examined by differential scanning calorimetry and thermogravimetric analysis. The results show that these epoxyurethane polymers, with glass-transition temperatures (T-g's) in the range -5 to 37 degrees C, had good thermally resistant properties, and the temperatures at 5% weight loss were in the range 235-280 degrees C. All of the polymers formed transparent, strong, flexible films, with good chemical-resistance properties and excellent impact strengths of greater than 50 cm, a flexibility of 0.5 mm, adhesions of 1-2, and pencil hardnesses of HB-2H. The larger OH functionality and OH value of the polyol resulted in higher T-g and pencil hardness values and better alcohol resistance and thermal stability in the crosslinked product of the polyol. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 2894-2901, 2009