Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study

doi:10.1016/j.polymer.2018.04.011

CORC > 化学研究所 > 中国科学院化学研究所

	Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study
	Wu, Xiao 1,2; Yang, Xin 1,3; Yu, Ran 1; Zhao, Xiao-Juan 1; Zhang, Ying 1; Huang, Wei 1,2
刊名	POLYMER
	2018-05-09
卷号	143 页码:145-154
关键词	Highly Crosslinked Epoxy Microspheres Precipitation Polymerization Phase Separation Toughening
ISSN号	0032-3861
DOI	10.1016/j.polymer.2018.04.011
英文摘要	A new type highly crosslinked and uniform thermoset epoxy microspheres (EMs) was prepared through the thermal curing between a trifunctional epoxy resin (TGPAP) and an aromatic amine hardener (DETDA), by precipitation polymerization in a low molecular weight polypropylene glycol (PPG-600) medium. The formation of EMs and the phase separation process were investigated in detail. The structure and thermal properties of EMs were characterized, and the result showed that EMs was active microspheres with hydroxyl and amino groups on its surface, and it had a high glass transition temperature T-g of 205 degrees C and high thermal stability. EMs was further used to toughen brittle epoxy resins. The effect of EMs on the curing behavior, mechanical and thermal properties of epoxy resins was studied. EMs accelerated the curing and the effect reached maximum till 5 wt% amount. Mechanical and thermal performance measurements exhibited that EMs not only significantly improved the toughness of epoxy matrix, but also increased the T-g. When 5 wt% EMs was introduced, the impact strength rose from 17.8 kJm(-2) to 42.4 kJ m(-2) and T-g increased more than 10 degrees C. The excellent toughening performance of EMs was attributed to its high stiffness and active surface. (C) 2018 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000432133900017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/43117]
专题	中国科学院化学研究所
通讯作者	Yang, Xin; Huang, Wei
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 3.Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wu, Xiao,Yang, Xin,Yu, Ran,et al. Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study[J]. POLYMER,2018,143:145-154.
APA	Wu, Xiao,Yang, Xin,Yu, Ran,Zhao, Xiao-Juan,Zhang, Ying,&Huang, Wei.(2018).Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study.POLYMER,143,145-154.
MLA	Wu, Xiao,et al."Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study".POLYMER 143(2018):145-154.