Kinetics and properties of diethyltoluenediamine type benzoxazine-cured diglycidyl ether of bisphenol-A

	Kinetics and properties of diethyltoluenediamine type benzoxazine-cured diglycidyl ether of bisphenol-A
	Ren, Shitong 1,2; Yang, Xin 1; Zhao, Xiaojuan 1; Zhang, Ying 1; Huang, Wei 1
刊名	THERMOCHIMICA ACTA
	2015-09-20
卷号	616 页码:33-41
关键词	Benzoxazine Epoxy resin Curing kinetics Properties
英文摘要	A novel diethyltoluenediamine type benzoxazine (PDETDA) was used as a hardener for diglycidyl ether of bisphenol-A (DGEBA), and the curing kinetics was investigated by non-isothermal differential scanning calorimetry (DSC). The results showed that PDETDA/DGEBA exhibited two curing processes, which Were attributed to the ring-opening polymerization of benzoxazine (reaction 1) and the etherification between hydroxyl groups of polybenzoxazine and epoxide groups (reaction 2), respectively. Both reactions were autocatalytic in nature and can be well described by the proposed kinetic models. The average activation energies (E(a)s) of reaction 1 and reaction 2 were determined to be 104.9 kJ mol(-1) and 125.0 kJ mol(-1), respectively. It was concluded from Ea that the alkyl substituents in PDETDA significantly affected the reaction 1 due to the steric hindrance, but had no influence on the reaction 2. The PDETDA-cured DGEBA exhibited higher strength and modulus, higher char yield, and lower water absorption than diethyltoluenediamine (DETDA)-cured DGEBA. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-11-03
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28390]
专题	化学研究所_高技术材料实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ren, Shitong,Yang, Xin,Zhao, Xiaojuan,et al. Kinetics and properties of diethyltoluenediamine type benzoxazine-cured diglycidyl ether of bisphenol-A[J]. THERMOCHIMICA ACTA,2015,616:33-41.
APA	Ren, Shitong,Yang, Xin,Zhao, Xiaojuan,Zhang, Ying,&Huang, Wei.(2015).Kinetics and properties of diethyltoluenediamine type benzoxazine-cured diglycidyl ether of bisphenol-A.THERMOCHIMICA ACTA,616,33-41.
MLA	Ren, Shitong,et al."Kinetics and properties of diethyltoluenediamine type benzoxazine-cured diglycidyl ether of bisphenol-A".THERMOCHIMICA ACTA 616(2015):33-41.