IR/BR系ブレンドのバウンドラバー-2-溶液法によるカーボンブラックの混合

概要

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Three types of IR and BR were mixed with carbon blacks by means of the solution masterbatch method. The rubber-carbon mixtures were blended with the other elastomer by passing through the mill, and thereby the bound rubber was analyzed by pyrolysis gas chromatography. When BR was added to the NR masterbatch loaded with HAF, most of the bound rubber consisted of NR component, which reached a maximum value and reduced slowly with the number of mill passes. In the case of BR masterbatch loaded with HAF, the bound rubber was composed of NR and BR and each of them varied in the same way that the NR component in the case of NR masterbatch did with the number of mill passes. Milling the preblend of NR and BR showed that the NR component in the bound rubber decreased and the BR component increased as the number of mill increased. EPC black adsorbed more of rubber from the solution than HAF black. The ratio of IR/BR in the bound rubber which combined with EPC black was lower than that of IR/BR in the case of HAF black. When HAF was reduced, no bound rubber was formed.
日本ゴム協会の論文