This work investigates the influence of silicon based coupling agents on visco-elastic properties of natural filler dispersed epoxy resin composites. Also this work attempts to explore the possibility of using silicon coupling grafted natural fillers as potential fillers for polymer composites. Ground nut shell power (GS powder), rice husk and saw dust were selected as reinforcement for this current investigation. The powders were silane surface grafted using silicon coupling agent 3-Aminopropyltrimethoxysilane via aqueous solution method. The composites were prepared via gravity casting method and post cured at 120°C. The visco-elastic behavior of silane surface modified rice-husk-epoxy natural filler composite gives improved results in storage modulus, and loss tangent. Similarly, the fatigue results revealed that the composites made with 10 vol.% of silane surface treated rice husk filler gives maximum fatigue life cycle of 1310. The sessile drop results show that the silane surface modified epoxy composites retains higher absorption resistance by offering higher contact angle even after the natural fillers are filled. Scanning electron microscope images revealed highly reacted phase and improved dispersion of natural fillers with matrix. These natural fillers strengthen epoxy composites could be right choice to replace many metallic based materials in engineering applications.

这项工作研究了硅基偶联剂对天然填料分散的环氧树脂复合材料的粘弹性的影响。同样，这项工作试图探索使用硅偶联接枝天然填料作为聚合物复合材料潜在填料的可能性。本次研究选择了花生壳粉（GS粉），稻壳和锯末作为增强材料。使用硅偶联剂3-氨丙基三甲氧基硅烷经由水溶液方法将粉末表面硅烷化接枝。通过重力浇铸法制备复合材料，并在120℃下后固化。硅烷表面改性的稻壳-环氧天然填料复合材料的粘弹性行为可改善储能模量和损耗角正切值。同样，疲劳结果表明，复合材料的体积分数为10。硅烷表面处理的稻壳填料的％可提供1310的最大疲劳寿命。固着力下降结果表明，即使在填充天然填料后，硅烷表面改性的环氧复合材料也可通过提供更高的接触角来保持较高的吸收阻力。扫描电子显微镜图像显示了高反应相，并改善了天然填料与基体的分散性。这些天然填料可增强环氧复合材料，是在工程应用中替代许多金属基材料的正确选择。扫描电子显微镜图像显示了高度反应的相，并改善了天然填料与基体的分散性。这些天然填料可增强环氧复合材料，是在工程应用中替代许多金属基材料的正确选择。扫描电子显微镜图像显示了高反应相，并改善了天然填料与基体的分散性。这些天然填料可增强环氧复合材料，是在工程应用中替代许多金属基材料的正确选择。