To provide a production method of a rubber composition for a tire, by which such a rubber composition for a tire can be obtained that is improved in dispersibility of silica and improved in high mileage property and wet grip performance in a balanced manner while achieving good processability.SOLUTION: The production method of a rubber composition for a tire includes: a first base kneading step of kneading a rubber component, silica and a silane coupling agent; a second base kneading step of kneading a first kneaded material obtained in the first base kneading step with a vulcanization accelerator; a finish kneading step of kneading a second kneaded material obtained in the second base kneading step with a vulcanizer; and an extrusion step of extruding a third kneaded material obtained in the finish kneading step by use of an extruder that includes a cylinder and a screw. The extrusion step is carried out by controlling a temperature difference between the cylinder and the screw to 7 to 28°C.SELECTED DRAWING: None


    Access

    Download


    Export, share and cite



    Title :

    タイヤ用ゴム組成物の製造方法


    Publication date :

    2021-11-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen