Physical and mechanical properties of nano-CaCO3/PP composites modified with acrylic acid

被引：25

作者：

Huang, Z ^{[1
]}

Lin, Z ^{[1
]}

Cai, Z ^{[1
]}

Mai, K ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Key Lab Polymer Composites & Funct Mat, Minist Educ, Coll Chem & Chem Engn,Mat Sci Inst, Guangzhou 510275, Peoples R China

来源：

PLASTICS RUBBER AND COMPOSITES | 2004年 / 33卷 / 08期

关键词：

polypropylene; nano-CaCO3; acrylic acid; physical and mechanical properties;

D O I：

10.1179/174328904X22314

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Nano-CaCO3/polypropylene (PP) composites modified by the reactive monomer acrylic acid (AA) with or without the initiator dicumyl peroxide (DCP) were prepared using a two-step method. The effects of nano-CaCO3 and AA on the physical and mechanical properties of nano-CaCO3/PP composites were investigated. Differential scanning calorimetry (DSC) results showed that the incorporation of nano-CaCO3 increased the crystallisation temperature as a result of the heterogeneous nucleation effect of nano-CaCO3 on PP, and induced the formation of R phase PP. The addition of AA further increased the crystallisation temperature of PP and the intensity of beta phase PP. The mechanical tests indicated that nano-CaCO3 could simultaneously reinforce and toughen PP, and the mechanical properties of nano-CaCO3/PP composites were higher than those of micro-CaCO3/PP composites. In addition, incorporation of AA further increased the mechanical properties of the composites. In the presence of DCP, a small amount of AA could increase markedly the mechanical properties of nano-CaCO3/PP composites.

引用

页码：343 / 351

页数：9

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