In the present work tensile, flexural, impact and hardness properties of sorghum bicolor, sisal fiber and jute reinforced with polyester composites are described for the first time. The hybrid composite plates are fabricated for different fiber weights by hand lay-up method. To investigate the mechanical attributes tensile, flexural, impact and hardness tests were performed as per ASTM standard. The mechanical test results revealed a regular trend of an increase in tensile, flexural, impact and hardness properties to adding natural fibers. Good adhesion between the natural fibers and the polyester matrix is also responsible for the effective resistance capability. Further, thermal stability and thermal decomposition of the composite material observed by thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The work concludes that sisal, jute, and sorghum bicolor fiber have high potential as reinforcement for composite production. This type of composite material can be useful for automobiles, industrial applications and construction fields.

在本工作中，首次描述了用聚酯复合材料增强的高粱双色，剑麻纤维和黄麻的拉伸，挠曲，冲击和硬度性能。通过手工铺网的方法制造出了不同纤维重量的混合复合板。为了研究机械性能，按照ASTM标准进行了拉伸，弯曲，冲击和硬度测试。机械测试结果表明，添加天然纤维后，拉伸，挠曲，冲击和硬度性能均呈规律性增长。天然纤维和聚酯基体之间的良好粘合性也负责有效的抵抗能力。此外，通过热重分析（TGA）和差热分析（​​DTA）观察到复合材料的热稳定性和热分解。这项工作得出的结论是，剑麻，黄麻和高粱双色纤维具有增强复合材料生产的潜力。这种类型的复合材料可用于汽车，工业应用和建筑领域。