On the scratch deformation of micrometric wollastonite reinforced polypropylene composites

被引：71
作者：
Dasari, A
Rohrmann, J
Misra, RDK
机构：
[1] Univ Louisiana, Dept Chem Engn, Mat Sci & Engn Grp, Lafayette, LA 70504 USA
[2] Basell Polyolefins, D-65926 Frankfurt, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 364卷 / 1-2期
关键词：
microstructure; deformation; polypropylenes;
D O I：
10.1016/j.msea.2003.08.058
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Scratch deformation characteristics of neat and wollastonite-containing polypropylenes under identical test conditions are examined by electron microscopy and atomic force microscopy techniques. The study indicates that the severity of plastic deformation during scratch deformation in filled polypropylenes is a strong function of the debonding/detachment of wollastonite mineral particles from the polypropylene matrix. Scratch resistance is evaluated in terms of scratch hardness, scratch depth, average scratch roughness, thickness and density of the scratch tracks. Atomic force microscopy suggests the presence of a localized region surrounding the reinforcement particle that is characterized by enhanced crystal nucleation in which the local chain conformation and kinetics are likely to be different from regions that are a significant distance away from the mineral particle. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：357 / 369
页数：13
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