Effect of nanofibres on the curing characteristics of an epoxy matrix

被引：12
作者：
De Schoenmaker, Bert [1 ]
van der Heijden, Sam [1 ]
Moorkens, Sofie [1 ]
Rahier, Hubert [2 ]
Van Assche, Guy [2 ]
De Clerck, Karen [1 ]
机构：
[1] Univ Ghent, Dept Text, B-9052 Ghent, Belgium
[2] Vrije Univ Brussel, Dept Mat & Chem, B-1050 Brussels, Belgium
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2013年 / 79卷
关键词：
Nano composites; Textile composites; Curing; Differential scanning calorimetry (DSC); Electro-spinning; DIFFERENTIAL SCANNING CALORIMETRY; GLASS-TRANSITION TEMPERATURE; MULTIWALLED CARBON NANOTUBES; CURE KINETICS; THERMOSETTING SYSTEMS; RESIN; COMPOSITES; ELECTROSPUN; NANOCOMPOSITES; MORPHOLOGY;
D O I：
10.1016/j.compscitech.2013.02.009
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Recently it is shown that nanofibrous structures have the potential to enhance the mechanical properties of epoxy composites. Even though it is well know that the curing cycle affects the final properties of the composites, up till today the effect of these nanofibrous structures on the curing characteristics of epoxies is not studied in detail. Therefore the influence of nanofibres of different polyamide types (PA 6, PA 6.6, PA 6.9 and PA 4.6) and of polyvinyl alcohol (PVAL) on the curing reaction of a diglycidyl ether of bisphenol A (DGEBA)-methylenedianiline (MDA) system was investigated, using non-isothermal and quasi-isothermal (modulated temperature) differential scanning calorimetry ((MT)DSC) measurements. The effect of the nanofibre fraction and polyamide type is examined, and a comparison with conventional PA 6 fibres is made. For polyamide nanofibres, the accelerating effect seems to result mainly from water present in the nano- and microfibers. PVAL nanofibres accelerated the curing more strongly than the PA nanofibres, though their moisture content was lower, indicating a catalytic effect of the surface hydroxyls. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：35 / 41
页数：7
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