油茶果壳对PE-HD力学性能的影响

以废弃油茶果壳和高密度聚乙烯(PE-HD)为原料,采用挤出成型工艺制备了PE-HD/油茶果壳复合材料。采用热重法测试了油茶果壳的热稳定性,研究了油茶果壳平均粒径、添加量及相容剂马来酸酐接枝聚乙烯(MAPE)添加量对复合材料力学性能的影响。结果表明,油茶果壳初始热解温度为211℃,热解残炭率达31.35%。随着油茶果壳平均粒径减小、油茶果壳和MAPE添加量增加,复合材料的拉伸、弯曲和缺口冲击强度均呈现先增大后减小的趋势。当油茶果壳平均粒径为380μm,添加量为40份,MAPE添加量为3份时,复合材料的力学性能最佳。

Effects of Camellia Oleifera Shell on Mechanical Properties of PE-HD

The high-density polyethylene(PE-HD)/Camellia oleifera shell composites were prepared from waste Camellia oleifera shell and PE-HD by extrusion process.The thermal stability of Camellia oleifera shell was tested by thermogravimetric analysis.The effects of average particle size and additive amount of Camellia oleifera shell,and additive amount of compatibilizer maleic anhydride grafted polyethylene(MAPE)on the mechanical properties of the composites were studied.The results show that the initial pyrolysis temperature of Camellia oleifera shell is 211℃,and the pyrolysis carbon residue rate reaches 31.35%.With the decrease of Camellia oleifera shell average particle size and the increase of additive amounts of Camellia oleifera shell and MAPE,the tensile strength,bending strength and notched impact strength of the composites all increase first and then decrease.The best mechanical properties of the composites are obtained when the average particle size of Camellia oleifera shell is 380μm,the addition amount of Camellia oleifera shell is 40 phr,and the addition amount of MAPE is 3 phr.