Carboxyl-terminated butadiene acrylonitrile liquid rubber toughened silicon carbide and stitched E-glass fibre-reinforced epoxy composite has been fabricated and tested for their relative effect on thermal, wear, visco-elastic and fatigue behaviour. The main objective of this present work is to explicate the importance of rubber toughening on high brittle polymer matrix and the need for secondary strengthening to improve properties. The reinforcements were surface-treated using an amine-functional coupling agent for better adhesion and uniform dispersion on matrix. The composites were made using hand layup method and post cured at 120 °C. The addition of micro rubber into epoxy resin improved the fatigue and visco-elastic properties with a marginal decrement in thermal stability and wear resistance behaviour whereas the addition of silicon carbide significantly improved the properties. A highest fatigue life cycle of 12,941 and storage modulus of 7.8 GPa was observed for composite contains 1 and 10 vol% of silicon carbide and micro rubber, respectively. The initial thermal stability of composite, which contains 2 and 10 vol% of reinforcement measures 348 °C and the lowest coefficient of friction of 0.36 and specific wear rate of 0.028 mm³/Nm. The Scanning electron microscope images illustrate uniform dispersion and improved adhesion of silane surface-modified reinforcements in epoxy matrix. These high toughness polymer composites could be used in high load-bearing engineering applications wherever possible.

制备了羧基封端的丁二烯丙烯腈液态橡胶增韧的碳化硅和缝合的E玻璃纤维增​​强环氧复合材料，并测试了它们对热，磨损，粘弹性和疲劳行为的相对影响。这项工作的主要目的是阐明橡胶在高脆性聚合物基体上增韧的重要性，以及进行二次增强以改善性能的需求。使用胺官能偶联剂对增强材料进行了表面处理，以实现更好的附着力和在基质上的均匀分散。使用手工铺层法制备复合材料，然后在120°C下后固化。在环氧树脂中添加微橡胶改善了疲劳和粘弹性，同时热稳定性和耐磨性略有下降，而碳化硅的添加显着改善了性能。对于分别包含1％和10％（体积）的碳化硅和微橡胶的复合材料，观察到的最高疲劳寿命周期为12,941，存储模量为7.8 GPa。复合材料的初始热稳定性为348°C，其中包含2和10 vol％的增强材料，最低摩擦系数为0.36，比磨损率为0.028 mm³ / Nm。扫描电子显微镜图像显示了硅烷表面改性增强材料在环氧基质中的均匀分散和改进的附着力。这些高韧性聚合物复合材料将尽可能用于高承载工程应用中。