Morphological aspects of rubber fracture and wear

Morphology of carbon black (CB)-filled rubber was studied with AFM and SEM and the classification of filler agglomerates, based on their internal structure and filler-matrix interactions, has been proposed. It varies according to the activity of CB and the kind of rubber. It has been shown that frac...

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Bibliographic Details
Published in:Journal of applied polymer science 2008-10, Vol.110 (1), p.55-60
Main Authors: Bieliński, D.M, Dobrowolski, O, Przybytniak, G
Format: Article
Language:English
Subjects:
AFM
Applied sciences
Composites
EPR
Exact sciences and technology
filler agglomerates
Forms of application and semi-finished materials
fracture
Polymer industry, paints, wood
rubber
SEM
Technology of polymers
TGA
wear
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Summary:Morphology of carbon black (CB)-filled rubber was studied with AFM and SEM and the classification of filler agglomerates, based on their internal structure and filler-matrix interactions, has been proposed. It varies according to the activity of CB and the kind of rubber. It has been shown that fracture of rubber starts either inside filler agglomerates (de-cohesion) or in a filler-matrix interphase (de-adhesion) initiating wear of the material. Microscopic observations correlate well with TGA and EPR data of wear debris collected during friction of rubber. The increase of thermal stability of CB and the appearance of additional spin signals, respectively, for elongated samples or debris, are proposed to be associated with de-cohesion or de-adhesion of the agglomerates. New approach to the fracture of rubber called "fatal agglomerate concept" is presented.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.28613