Wetting of carbon fibers by model liquids (water and octane) and melts of pure coal-tar pitch and that with myristic acid added as a surfactant was studied by the Wilhelmy method. It was shown that the contact angles of the carbon fibers by the pitch that were calculated using wetting data for the model liquids agreed with the directly measured values. Addition of myristic acid equalized the polar and dispersive components of the pitch-melt surface free energy and improved the wettability.
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The work was performed under a contract between FKP Aleksinskii Chemical Combine and Lomonosov MSU on the topic “Technology development and production of heat resistant pressed composites for mass production of simplified items used in aerospace and land and sea transportation” according to RF Government Resolution No. 218 of Apr. 9, 2010, “Measures of state support for cooperation of Russian higher education institutions and organizations, for implementation of complex projects of high-tech production,” Contract No. 02.G36.31.0006.
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Translated from Khimicheskie Volokna, No. 5, pp. 30–34, September—October, 2015.
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Shornikova, O.N., Malakho, A.P., Govorov, A.V. et al. Wetting of Carbon Fibers by Coal-Tar Pitch Melts. Fibre Chem 47, 367–371 (2016). https://doi.org/10.1007/s10692-016-9694-5
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DOI: https://doi.org/10.1007/s10692-016-9694-5