On the fracture characteristics of impact tested high density polyethylene-calcium carbonate nanocomposites

被引：50
作者：
Deshmane, C.
Yuan, Q.
Misra, R. D. K.
机构：
[1] Univ Louisiana, Ctr Struct & Funct Mat, Lafayette, LA 70504 USA
[2] Univ Louisiana, Dept Chem Engn, Lafayette, LA 70504 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 452卷
关键词：
plastic deformation; microstructure; polymer nanocomposites;
D O I：
10.1016/j.msea.2006.11.059
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanical response of calcium carbonate-reinforced high density polyethylene nanocomposite is investigated and the behavior compared with the unreinforced polyethylene processed under similar conditions. The reinforcement of high density polyethylene with nanocalcium, carbonate retains adequately high strength in the temperature range of -40 to + 20 degrees C. The positive influence of reinforcement on the impact strength is reflected in the fracture characteristics and is attributed predominantly to the nucleating effect of calcium carbonate in decreasing the spherulite size. The achievement of high impact strength is accompanied by increase in modulus and no loss in yield strength. The reinforcement of neat high density polyethylene (HDPE) with nanocalcium carbonate alters the deformation micromechanism from crazing-tearing in HDPE to fibrillated fracture in polymer nanocomposite. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：592 / 601
页数：10
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