Study of scratch resistance in homo- and co-polypropylene filled with nanometric calcium carbonate

In this study, homo- and co-polypropylene were modified by nanometric calcium carbonate and the effect of additive on scratch resistance was evaluated. Results of this study show that the length of scratch curvature can be considered as an acceptable criterion to evaluate the scratch resistance of p...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2007-02, Vol.445, p.526-536
Main Authors: Zokaei, S., Lesan Khosh M., R., Bagheri, R.
Format: Article
Language:English
Subjects:
Applied sciences
Calcium carbonate
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Mechanical properties
Nanocomposite
Physical properties
Polymer industry, paints, wood
Polypropylene
Properties and testing
Scratch
Surface deformation
Technology of polymers
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Summary:In this study, homo- and co-polypropylene were modified by nanometric calcium carbonate and the effect of additive on scratch resistance was evaluated. Results of this study show that the length of scratch curvature can be considered as an acceptable criterion to evaluate the scratch resistance of polymers. Also, it was found that addition of calcium carbonate to homo-polypropylene increases scratch resistance of this polymer, but its effect on co-polypropylene is insignificant. Based on the results of this work, one may claim that incorporation of nanometric particles with good adhesion to the matrix and well dispersion might be effective in enhancement of scratch resistance. Formation of shear bands was found as the major deformation mechanism in scratching of homo- and co-polypropylene. In addition, debonding of reinforced particles from the matrix and cavitation of rubber particles, in the case of co-polypropylene, ease plastic deformation and thus, reduce the scratch resistance.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2006.09.080