Curing kinetics of bio-based epoxy resin-toughened DGEBA epoxy resin blend: Synthesis and characterization

被引：44
作者：
Kumar, Sudheer [1 ]
Samal, Sushanta K. [1 ]
Mohanty, Smita [1 ]
Nayak, Sanjay K. [1 ]
机构：
[1] CIPET, LARPM, SARP, B-25,CNI Complex, Bhubaneswar 751024, Odisha, India
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2019年 / 137卷 / 05期
关键词：
Itaconic-based bioresin (TEIA); DGEBA; Curing kinetics; Adhesive properties; Activation energy; EPOXIDIZED SOYBEAN-OIL; BIOBASED EPOXY; MECHANICAL-PROPERTIES; LINSEED OIL; THERMAL-PROPERTIES; IMPACT PROPERTIES; ITACONIC ACID; ANHYDRIDE; NETWORKS; PERFORMANCE;
D O I：
10.1007/s10973-019-08080-4
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present study, TEIA bioresin was blended with the diglycidyl ether bisphenol A (DGEBA) epoxy resin in different ratios (i.e. 10, 20, 30, 40mass%), cured with methylhexahydrophthalic anhydride curing agent in the presence of 2-methylimidazole catalyst. The optimized composition of DGEBA and TEIA bioresin blends system was employed as an adhesive strength. The adhesive strength of the TEIA-modified DGEBA epoxy resin blend system was increased from 4.14 to 6.31MPa on an aluminium substrate compared to the DGEBA epoxy resin. The curing kinetics of non-isothermal, DGEBA epoxy resin and its bio-based blend systems were investigated employing differential scanning calorimetry. An increase in the peak temperature and reduction in a heat of curing as well as activation energy in DGEBA epoxy resin were observed with the addition of TEIA bioresin content. The activation energy (E-a) of the DGEBA resin and their bio-based blend system were obtained from Kissinger and Flynn-Wall-Ozawa methods.
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收藏
页码：1567 / 1578
页数：12
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