Abstract In the present work, an attempt has been made to develop bio-based composites using cardanol and eugenol based benzoxazine matrices with bio-silica as well as natural fibrous materials (coir felt, kapok fabric, jute felt and rice husk) as reinforcements. The bio-composites developed were studied for different applications viz., dielectric, water repellent, oil-water separation, sound-absorption including corrosion resistance use. Among the bio-silica reinforced benzoxazine composites, 7 wt% bio-silica reinforced cardanol composites possesses the highest value of water contact angle (147°) and the lowest value of dielectric constant (2.0) than those of other bio-silica reinforced composites. Further, the cotton fabric was coated with cardanol and eugenol based polybenzoxazines separately, whose values of water contact angles are found to be 159° and 157° with oil-water separation efficiency as 96% and 95% respectively. Furthermore, the cardanol based benzoxazine was separately reinforced with jute felt, coir felt, kapok fabric and rice-husk. The corresponding sound absorption efficiency was found to increase in the following order, Neat polybenzoxazine

中文翻译：

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用于油水分离、吸声和耐腐蚀应用的生物基聚苯并恶嗪复合材料

摘要 在目前的工作中，已尝试开发使用腰果酚和丁子香酚基苯并恶嗪基质与生物二氧化硅以及天然纤维材料（椰壳纤维毡、木棉织物、黄麻毡和稻壳）作为增强材料的生物基复合材料。研究开发的生物复合材料用于不同的应用，即介电、防水、油水分离、吸音（包括耐腐蚀用途）。在生物二氧化硅增强的苯并恶嗪复合材料中，7 wt% 的生物二氧化硅增强腰果酚复合材料与其他生物二氧化硅增强复合材料相比，具有最高的水接触角值（147°）和最低的介电常数值（2.0）。此外，棉织物分别涂有腰果酚和丁子香酚基聚苯并恶嗪，其水接触角值为159°和157°，油水分离效率分别为96%和95%。此外，腰果酚基苯并恶嗪分别用黄麻毡、椰壳纤维毡、木棉织物和稻壳增强。发现相应的吸声效率按以下顺序增加，Neat polybenzoxazine