期刊
EUROPEAN POLYMER JOURNAL
卷 46, 期 7, 页码 1498-1509出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2010.04.015
关键词
Epoxy resin; Hyperbranched polymers; Toughness increase; Shrinkage
资金
- MICINN (Ministerio de Ciencia e Innovacion)
- FEDER (Fondo Europeo de Desarrollo Regional) [MAT2008-06284-C03-01, MAT2008-06284-C03-02]
- Comissionat per a Universitats i Recerca del DIUE de la Generalitat de Catalunya [2009-SGR-1512]
- Germany-Spanish collaboration program [HA2007-0022, DAAD PPP D/07/13493]
- Catalonian Government [FI-DGR 2009]
The influence of hydroxy-functionalized hyperbranched poly(ester-amide) (HBP) of different molecular weight on the curing process of diglycidylether of bisphenol A (DGEBA) was studied using methyltetrahydrophthalic anhydride (MTHPA) as curing agent. By Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR) the curing reaction was monitored and the covalent incorporation of the modifier in the matrix was proved. By thermomechanical analysis (TMA) the reduction of the contraction after gelation on changing the HBP proportion was observed. The incorporation of HBP increased the glass transition temperature (T(g)) and reduced the overall shrinkage. The modified materials showed a higher thermal degradability than neat DGEBA thermosets allowing reworkability. Thermal expansion coefficient. Young's modulus, impact strength and microhardness were improved. The water uptake behavior was also evaluated. (C) 2010 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据