Effect of ecological treatment on adhesion of woven flax fibers in epoxy matrix

2014 North African Workshop on Dielectic Materials for Photovoltaic Systems (NAWDMPV) Pub Date : 2014-12-29 DOI:10.1109/NAWDMPV.2014.6997596

A. Triki, M. Karray, C. Poilâne, P. Picart, M. Gargouri

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引用次数: 1

Abstract

Surface treatment of woven flax fibers was investigated as means of improving their adhesion in epoxy matrix. Flax fibers were treated in two ways : (i) with enzymatic treatments using pectinase enzymes and (ii) with pectinase enzymes/detergent, respectively. For this reason, dielectric measurements were performed in the frequency range from 10-1 Hz to 106 Hz and temperature interval from 40 °C to 200 °C. Studies of dielectric relaxations in these composites revealed the presence of three relaxation processes namely the orientation polarization imputed to the presence of polar water molecules in flax fibers, the relaxation process associated with conductivity occurring as a result of the carriers charges diffusion noted for high temperature above glass transition and low frequencies, and interfacial polarization effect or Maxwell-Wagner-Sillars (MWS) relaxation that is attributable to the accumulation of charges at the flax fibers/epoxy resin interfaces. Analysis of this latter using the Havriliak-Negami model revealed that the adhesion fibers/matrix was improved by the addition of the detergent treatment to the enzymatic one.

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生态处理对亚麻织物在环氧基体中附着力的影响

研究了机织亚麻纤维的表面处理方法，以提高其在环氧基体中的附着力。采用果胶酶法和果胶酶/洗涤剂法对亚麻纤维进行酶处理。因此，介电测量的频率范围为10-1 Hz至106 Hz，温度范围为40°C至200°C。对这些复合材料介电弛豫的研究揭示了三个弛豫过程的存在，即取向极化归因于亚麻纤维中极性水分子的存在，弛豫过程与导电性有关，这是由于载流子电荷扩散引起的高温玻璃化转变和低频，和界面极化效应或麦克斯韦-瓦格纳-西拉(MWS)弛豫，这是由于在亚麻纤维/环氧树脂界面上电荷的积累。使用Havriliak-Negami模型对后者进行分析，发现在酶处理的基础上加入洗涤剂处理可以改善纤维/基质的粘附性。

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2014 North African Workshop on Dielectic Materials for Photovoltaic Systems (NAWDMPV)

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