竹原纤维/聚氨酯复合材料的力学性能

为使竹原纤维/聚氨酯复合材料得到更好的应用，采用竹原纤维为增强材料，聚氨酯为基体，制备竹原纤维/聚氨酯复合材料，用不同质量分数的NaOH进行处理，并对处理后的竹原纤维复合材料进行拉伸性能和冲击强力先得到更好的应用，本文采用竹原纤维为增强材料，聚氨酯为基体，制备竹原纤维/聚氨酯复合材料，并对不同浓度的NaoH处理和不同质量分数制备的竹原纤维复合材料进行了拉伸性能和冲击强力的测试分析。结果表明：随着NaoH质量分数增加，复合材料的抗拉强度和冲击强力先增大后减小，断裂伸长率逐渐增大；随着竹原纤维质量分数的增加，复合材料的抗拉强度和冲击强力先增加后减小，其断裂伸长率随纤维质量分数的增大而降低。

Mechanical properties of natural bamboo fiber/polyurethane composites

Natural bamboo fiber/polyurethane composite materials can be widely used in building, aviation and so on for it’s unique performance. In order to better application natural bamboo fiber/polyurethane composite material, this paper regarded the natural bamboo fiber as reinforcing material, and polyurethane used as basic materials , natural bamboo fiber/polyurethane composite were made, and the performances of the tensile strength and elongation, bursting strength were tested and analyzed for the natural bamboo fiber/polyurethane composite material with different NaoH treatment concentration and different natural bamboo fiber content. The results show that with the increase NaoH concentration, the tensile strength and bursting strength of composite material is first increased and then decreased, while the breaking elongation will increase gradually. With the increase fiber content, the tensile strength and bursting strength of composite material is first increased and then decreased , while the breaking elongation will reduces along with the increase fiber content.