聚丙烯/纳米CaCO_3复合材料的拉伸性能Tensile Properties of Polypropylene/Nano-CaCO_3 Composites
梁基照;王丽;
摘要(Abstract):
采用2种填料粒子表面处理方法[(表面活化(SⅠ)和钛酸酯偶联剂处理(SⅡ)]分别制备了纳米级CaCO_3填充聚丙烯复合材料。应用万能材料试验机在室温下考察了CaCO_3粒子表面处理和CaCO_3含量对复合材料拉伸力学性能的影响。结果表明,随着纳米粒子CaCO_3体积分数(φ)的增加,2种试样的弹性模量和拉伸强度有轻微的变化,而粒子表面处理的影响不太明显。当φ为0.5%时,SⅠ的拉伸断裂强度达至最大,然后随着φ的增加呈非线性函数形式下降;除个别测量点外,SⅡ的拉伸断裂强度基本上随着φ的增加呈非线性函数形式下降。在相同的条件下,SⅠ的拉伸断裂强度高于SⅡ,而断裂伸长率则相反。
关键词(KeyWords): 聚丙烯;纳米碳酸钙;复合材料;拉伸性能
基金项目(Foundation):
作者(Authors): 梁基照;王丽;
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