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Abstract
Wetting of organic fibres by polyamide melts was investigated. On the example of Terlon, it was shown that the contact angle of wetting increases in the order PA-610 < PA-6 < < PA-12. The polymers are also in the same order in wetting of a steel wire. Adhesion on the interface was investigated in the same systems. PA-610 in the form of powder exhibited maximum adhesion to steel wire and organic fibres. The necessity of using highly viscous matrices in the form of finely disperse systems for obtaining reliable and reproducible adhesive strength values was demonstrated. The validity of using steel wire as a model substrate was demonstrated and the qualitative characteristics of the change in the adhesive strength under the effect of factors which primarily alter the properties of the polymer matrix were found. The results obtained in studying the shear strength of the composites are correlated with the results of determining the adhesive strength in their unit cell. This allows recommending the shear method for evaluating adhesion in industrial conditions.
Published Version
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