Correlation between rheological and electrical properties of polyamides filled with carbon black

The electrical properties of a polyamide filled with carbon black (CB) are due to the formation of a percolated CB network throughout the matrix. In a former study, we have shown that the quality of the network was related to the processing conditions used during the mixing process. This quality was...

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Bibliographic Details
Published in:Rheologica acta 2010-08, Vol.49 (8), p.855-863
Main Authors: Leboeuf, M., Peiti, C., Brulé, B., Ghamri, N., Vergnes, B.
Format: Article
Language:English
Subjects:
Applied sciences
Carbon
Carbon black
Characterization and Evaluation of Materials
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Electrical measurement
Electrical properties
Engineering Sciences
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
Materials
Materials Science
Mechanical Engineering
Original Contribution
Polyamide resins
Polymer industry, paints, wood
Polymer Sciences
Quality assessment
Rheological properties
Rheology
Soft and Granular Matter
Storage modulus
Technology of polymers
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Summary:The electrical properties of a polyamide filled with carbon black (CB) are due to the formation of a percolated CB network throughout the matrix. In a former study, we have shown that the quality of the network was related to the processing conditions used during the mixing process. This quality was assessed by the evolution of loss and storage modulus during strain sweep experiments. In the present paper, we perform simultaneous rheological and electrical measurements in order to get more information on the relationships between CB network structure and resistivity. We show that all the compounds can be classified into two different families, according to their electrical properties, and that it is possible, at fixed CB content, to move from one family to the other by modifying the mixing conditions.
ISSN:0035-4511
1435-1528
DOI:10.1007/s00397-010-0459-4