Flexural and impact properties of POM/EVA/HDPE blends and POM/EVA/HDPE/nano-CaCO3 composites

被引：21
作者：
Liang, Ji-Zhao [1 ]
Wang, Fang [1 ]
机构：
[1] S China Univ Technol, Sch Mech & Automot Engn, Res Div Green Funct Mat & Equipment, Guangzhou 510640, Guangdong, Peoples R China
来源：
POLYMER BULLETIN | 2015年 / 72卷 / 04期
关键词：
Polymer-matrix composites; POM; HDPE; EVA; Flexural properties; Impact fracture; NANOMETER CALCIUM-CARBONATE; MECHANICAL-PROPERTIES; FRACTIONATED CRYSTALLIZATION; MELT DENSITY; MORPHOLOGY; POLYOXYMETHYLENE; POM; NANOCOMPOSITES; POLYPROPYLENE; COPOLYMER;
D O I：
10.1007/s00289-015-1314-7
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The Polyformaldehyde (POM)/ethylene-vinyl acetate copolymer (EVA)/high-density polyethylene (HDPE) blends and POM/EVA/HDPE composites filled with nanometer calcium carbonate (nano-CaCO3) were prepared using a twin-screw extruder. The effects of the HDPE weight fraction on the flexural and impact properties of the blends and composites were investigated at room temperature. The results showed the flexural modulus and strength of the blends and composites decreased slightly with increasing the HDPE weight fraction. The values of the flexural modulus of the composites were higher than those of the blends, while the values of the impact fracture strength of the blends were higher than those of the composites under the same HDPE weight fraction. This indicated that the impact fracture toughness of the POM could be improved with the HDPE, while the flexural stiffness of the POM blends could be enhanced with the nano-CaCO3 to some extent.
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收藏
页码：915 / 929
页数：15
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