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首页> 外文期刊>Journal of Applied Polymer Science >Effect of NBR on epoxy/glass prepregs properties
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Effect of NBR on epoxy/glass prepregs properties

机译：NBR对环氧/玻璃预浸料性能的影响

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摘要

Solid acrylonitrile-butadiene rubber (NBR) was used in epoxy resin for toughening and also for increasing the tack of epoxy/glass prepregs. The NBR used in this study was a rubber with 33% acrylonitrile content. The changes in thermal and mechanical properties such as glass transition temperature (T _g), curing characteristics and lap-shear strength have been studied. For this purpose, three types of prepregs with two levels of NBR content of 3 and 5%, were prepared. Prepregs were made by solvent type impregnation apparatus. In this method, resin impregnates satin textile glass fiber under the controlled and constant condition of line speed and oven temperature. Prepregs were B-staged for about 3%. The cure characterization, T_g and flow behavior were evaluated using differential scanning calorimetry and rheological analysis. Results showed that increasing the rubber content caused the following effects: (a) delay in gel time of prepregs, (b) increase in activation energy of prepregs, and (c) decrease in total heat of curing reaction. It is interesting that NBR increased the tack of epoxy/glass prepreg but, had no effect on its resin flow behavior.
机译：固态丙烯腈-丁二烯橡胶（NBR）用于环氧树脂中以增韧，并用于增加环氧/玻璃预浸料的粘性。在这项研究中使用的丁腈橡胶是一种具有33％丙烯腈含量的橡胶。研究了玻璃化转变温度（T _g），固化特性和搭接剪切强度等热和机械性能的变化。为此目的，制备了三种类型的预浸料，其NBR含量分别为3％和5％。用溶剂型浸渍装置制备预浸料。在这种方法中，树脂在线速度和烘箱温度的受控且恒定的条件下浸渍缎纹纺织玻璃纤维。将预浸料进行B阶段约3％。使用差示扫描量热法和流变学分析评估固化特性，T_g和流动行为。结果表明，增加橡胶含量具有以下作用：（a）预浸料的凝胶时间延迟，（b）预浸料的活化能增加，以及（c）固化反应的总热量减少。有趣的是，NBR可以提高环氧/玻璃预浸料的粘性，但对其树脂的流动性能没有影响。

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