Decomposition Behavior and Decomposition Products of Epoxy Resin Cured with MeHHPA in Near-critical Water

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 28; no. 4; pp. 781 - 786
• Main Authors: Gong, Xianyun, Liu, Yuyan, Jia, Xuegang, Shan, Guohua
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2013; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Decomposition; Decomposition reactions; Epoxy resins; Esters; Ethers; Liquids; Materials Science; Organic Materials; Spectra; Spectrometry; 分解产物; 分解行为; 反应介质; 反应温度; 异丙基苯酚; 液体产品; 环氧树脂固化物; 近临界水; near-critical water; epoxy resin; decomposition; mechanism
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-013-0768-4

A kind of chemical method that used water as the liquid reaction medium to decompose epoxy resin was studied. The thermosetting epoxy resin was decomposed successfully under the condition of near-critical water. The decomposition rate of epoxy resin raised rapidly as the reaction time and reaction temperature increased. The decomposition reaction products were characterized by infra-red spectra and gas chromatography-mass spectrometry. The phenol, isopropylphenol, 4, 4＇-（1-methylethylidene） bis-phenol were found as the main compounds in liquid products, which were common monomers from epoxy resin. When reaction was carried out at the temperature of 260℃ -300 ℃, the decomposition mechanism of epoxy resin was envisaged as the ether and ester bonds cracking.