ICCAS OpenIR
Highly crosslinked and uniform thermoset epoxy microspheres: Preparation and toughening study
Wu, Xiao1,2; Yang, Xin1,3; Yu, Ran1; Zhao, Xiao-Juan1; Zhang, Ying1; Huang, Wei1,2
2018-05-09
Source PublicationPOLYMER
ISSN0032-3861
Volume143Pages:145-154
AbstractA 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.
KeywordHighly Crosslinked Epoxy Microspheres Precipitation Polymerization Phase Separation Toughening
DOI10.1016/j.polymer.2018.04.011
Indexed BySCI
Language英语
WOS IDWOS:000432133900017
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/43118
Collection中国科学院化学研究所
Corresponding AuthorYang, Xin; Huang, Wei
Affiliation1.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
Recommended Citation
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.
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