文献类型：期刊文献

英文题名：Preparation and Properties of Nonionic Polyol Dispersion from Terpinene-Maleic Ester-Type Epoxy Resin

作者：Wu, Guo-Min[1,2,3] Kong, Zhen-Wu[1,2,3] Chen, Jian[1,2,3] Jiang, Jian-Chun[1,2,3]

第一作者：吴国民;Wu, Guo-Min

通信作者：Wu, GM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[3]State Forestry Adm, Key & Open Lab Forest Chem Engn, Nanjing 210042, Peoples R China

年份：2011

卷号：120

期号：1

起止页码：579-585

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20110213563212);Scopus(收录号：2-s2.0-78650852821);WOS:【SCI-EXPANDED(收录号:WOS:000287215200070)】；

基金：Contract grant sponsor: National Natural Science Foundation of China; contract grant numbers: 30972320, 30571465.

语种：英文

外文关键词：polyurethanes; resins; water-soluble polymers

摘要：A nonionic epoxy-based polyol (NTP) which can be used in place of the commonly used polyol dispersions to prepare two-component waterborne polyurethanes was synthesized with terpinene-maleic ester-type epoxy resin (TME), polyethylene glycol (PEG), and trimethylopropane (TMP) in the presence of sulfuric acid as catalyst. The synthesis process was tracked with gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) by investigating the changes of molecular weight and glass transition temperature (T(g)) of the product. FTIR was used to characterize the chemical structure of NTP. Major technical parameters of NTP were as follows: hydroxyl value 100 mg/g, hydroxyl group content 3.04%, T(g) 4.03 degrees C, and viscosity 150 mPa s (40% solid content). Effect of molecular weights and dosages of PEG on stability of NTP dispersion was examined by particle size analyses. It was found that stable dispersion was obtained when using PEG6000 as hydrophilic chain and its dosage >= 8% by the weight of TME. The average particle size of the prepared dispersion was about 200 nm from particles size and TEM analyses. The NTP dispersion showed characteristic of shear thinning, which indicated it was a pseudoplastic fluid. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 579-585, 2011