四种壳类纤维/聚氯乙烯木塑复合材料的蠕变及磨损性能

选用4种壳类纤维-椰子壳、榛子壳、核桃壳和稻壳为填充材料，聚氯乙烯（PVC）为基体材料，制备壳类纤维/PVC复合材料，对4种壳类纤维进行了FTIR和热分析，对4种壳类纤维/PVC复合材料进行蠕变及磨损性能测试。结果表明：4种壳类材料中，稻壳纤维中纤维素含量最高，为43.6%，稻壳纤维/PVC复合材料具有较好的结合界面和力学性能，其压缩、拉伸和弯曲强度最高，分别为43.1 MPa、23.2 MPa和46.1 MPa，比强度最低的核桃壳纤维/PVC复合材料分别高出13.7%、33.3%和21.0%，在相同应力作用下，稻壳纤维/PVC复合材料蠕变应变值最小；在相同磨损条件下，稻壳纤维/PVC复合材料的比磨损率最小，其摩擦系数亦为最小。

Creep and wear properties of four different types of husk fibers/polyvinyl chloride composites

Four kinds of husk fibers, coconut shell, hazelnut shell, walnut shell and rice husk were used as filler material and polyvinyl chloride as the base material to prepare the husk fiber/polyvinyl chloride composites. Four kinds of husk fibers were analyzed by comprehensive thermal analyzer and FTIR. The creep and wear properties of four kinds of husk fiber/polyvinyl chloride composites were tested. The results show that the cellulose content in rice husk is 43.6%, which is the highest in the four kinds of husk fibers. The rice husk fiber/polyvinyl chloride composites have good interface and mechanical properties, and their compressive, tensile and flexural strength are the highest, which is 43.1 MPa, 23.2 MPa and 46.1 MPa, and increase by 13.7%, 33.3% and 21.0%, respectively, compared with walnut shell fiber/polyvinyl chloride composites of lowest strength. Under the same stress, the creep strain of rice husk fiber/polyvinyl chloride composites is the smallest. Under the same wear conditions, the specific wear rate of rice husk fiber/polyvinyl chloride composites is the smallest, while their friction coefficient is also the smallest.