文献类型：期刊文献

英文题名：Bio-based reactive diluent derived from cardanol and its application in polyurethane acrylate (PUA) coatings with high performance

作者：Hu, Yun[1,2] Feng, Guodong[1] Shang, Qianqian[1] Bo, Caiying[1] Jia, Puyou[1] Liu, Chengguo[1] Xu, Feng[3] Zhou, Yonghong[1]

第一作者：胡云;Hu, Yun

通信作者：Zhou, YH[1]

机构：[1]Chinese Acad Forestry, Jiangsu Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat,Key Lab Fores, Inst Chem Ind Forest Prod,State Forestry Adm, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China;[3]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China

年份：2019

卷号：16

期号：2

起止页码：499-509

外文期刊名：JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH

收录：;EI(收录号：20183905858165);Scopus(收录号：2-s2.0-85053676785);WOS:【SCI-EXPANDED(收录号:WOS:000463217600016)】；

基金：We greatly thank to the Natural Science Foundation of Jiangsu Province (BK20161122), Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM-S-201501), the Fundamental Research Funds of CAF (CAFYBB2017QB006), and the Fundamental Research Funds from Jiangsu Province Biomass and Materials Laboratory (JSBEM-S-2017010) for financial support.

语种：英文

外文关键词：Cardanol; UV-curable coating; Reactive diluent; Castor oil

摘要：A UV-curable cardanol-based monomer (ECGE) was prepared using cardanol and epichlorohydrin, followed by epoxidation of the unsaturation in alkyl side chains of cardanol segments. After its chemical structure was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance (H-1 NMR), ECGE was used as a reactive diluent to copolymerize with castor oil-based polyurethane acrylate (PUA) and a series of UV-curable coatings were prepared. Results showed that the viscosity and volume shrinkage of the UV-curable PUA system decreased significantly after the introduction of cardanol-based monomer while maintaining reasonably high bio-renewable contents; when containing 50% of ECGE, the biomass content reaches 66.2%, which is 1.41 times that of pure resin. In addition, the coating properties were evaluated to determine hardness, adhesion, flexibility, and water resistance. The properties of UV-curable thermoset were also studied using tensile testing, dynamic mechanical thermal analysis, and thermogravimetric analysis. The cardanol-based coatings showed excellent adhesion, flexibility, medium hardness, and enhanced char yield although tensile strength, tensile modulus and glass transition temperatures were somewhat diminished. All these performances can be attributed to the unique architectures of ECGE that combined the structural features of rigid benzene ring and long flexible alkyl chains. The UV-curing behavior was determined using real-time IR, and the results indicated that the conversion of unsaturated bond was increased with more concentration of ECGE.