作　　者： ; ;

机构地区： 华南理工大学自动化科学与工程学院

出　　处： 《上海塑料》 2005年第1期19-21,30,共4页

摘　　要： 采用两种填料粒子表面处理方法(表面活化(S Ⅰ)和钛酸酯偶联剂处理(SⅡ))分别制备了纳米级碳酸钙(CaCO3)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表面处理方法及粒子含量对复合材料弯曲性能的影响。结果表明,随着纳米粒子体积分数(φf)的增加,S Ⅰ的弯曲模量和弯曲强度有所提高;而S Ⅱ则轻微下降。应用热变形温度仪测量了试样的热变形温度(HDT)后发现,纳米CaCO3柱子的填充可明显地改善PP树脂的耐热性能。在较高的载荷下,两种PP/纳米CaCO3复合体系的热变形温度十分接近。 Nano-meter calcium carbonate (CaCO3) filled polypropylene (PP) composites were prepared respectively by using two methods of filler particle surface treatment (surface activation (SⅠ) and titanate coupling agent (S Ⅱ)) in this paper. The flexural properties were measured at room temperature by means of a universal materials tester to identify the effects of the surface treatment and content of the particles on the flexural properties. The results showed that the flexural modulus and strength of SⅠ somewhat increased with increasement of the nano-particle vol- ume fraction ( φ f) while they decreased for SⅡ . Furthermore, the heat deformation temperature (HDT) of the samples was measured employing a heat deformation temperature instrument. It was found that the values of HDT of the two composite systems were quite close each other under higher loading condition.

关 键 词： 聚丙烯 纳米 复合材料 弯曲强度 耐热性

领　　域： [化学工程]