Mechanical, Thermal and Morphological Characterization of High-Density Polyethylene and Vermiculate Composites

被引：5

作者：

Oliveira, Iara Thais D. ^{[1
]}

Visconte, Leila L. Y. ^{[1
]}

Vendramini, Ana Lucia A. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, Brazil

来源：

INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS | 2009年 / 58卷 / 09期

关键词：

blends; polyethylene; vermiculite; FILLED POLYPROPYLENE COMPOSITES; NANOCOMPOSITES; BEHAVIOR;

D O I：

10.1080/00914030903035345

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High-density polyethylene composites containing 7, 10, 15 and 20% w/w vermiculite (VMT) were prepared by extrusion in a twin-screw extruder at various shear rates. The thermal and mechanical properties and morphological characteristics of the composites were evaluated and compared with pure high-density polyethylene. The blend morphologies were determined by scanning electron microscopy (SEM). The thermal properties of the composites were investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The TGA results reveal that the use of VMT particles to fill polyethylene increased the thermal stability of the composite. The results obtained indicate that a shear speed of 400 rpm and vermiculite content of 7% showed the best properties of impact resistance. These observations were confirmed by morphology analysis.

引用

页码：489 / 497

页数：9

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