To provide an adhesive sealant material capable of exhibiting good sealability even under a low-temperature environment, suppressing flow during travel, securing sufficient adhesiveness to a tire, and satisfactorily maintaining these performances over a long period of time.SOLUTION: An adhesive sealant material constituting a sealant layer 10 arranged on an inner surface of a pneumatic tire is composed of a sealant material composition which contains 0.1-40 pts.mass of sulfur, more than 0 pt.mass and less than 1 pt.mass of a crosslinking aid, and 50 pts.mass or more of a plasticizer component based on 100 pts.mass of a rubber component. Viscosity V1 measured under a condition of -20°C immediately after vulcanization is set to 20 kPa s or less, and a viscosity difference ΔV between the viscosity V1 and viscosity V2 measured under a condition of -20°C after storage for two weeks in a 30°C environment from immediately after vulcanization is set to 5 kPa s or less.SELECTED DRAWING: Figure 1

    【課題】低温環境下においても良好なシール性を発揮し、走行中の流動を抑制し、且つ、タイヤに対する十分な接着性を確保し、更に、これら性能を長期に亘って良好に維持することを可能にした粘着性シーラント材を提供する。【解決手段】空気入りタイヤの内表面に配置されたシーラント層10を構成する粘着性シーラント材を、ゴム成分100質量部に対して、硫黄0.1質量部~40質量部、架橋助剤0質量部超1質量部未満、可塑剤成分50質量部以上が配合されたシーラント材組成物で構成し、且つ、加硫直後に-20℃の条件で測定した粘度V1を20kPa・s以下、加硫直後から30℃環境下で2週間保管した後に-20℃の条件で測定した粘度V2と粘度V1との粘度差ΔVを5kPa・s以下に設定する。【選択図】図1


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    Title :

    ADHESIVE SEALANT MATERIAL


    Additional title:

    粘着性シーラント材


    Contributors:

    Publication date :

    2022-02-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C09K Materialien für Anwendungen, soweit nicht anderweitig vorgesehen , MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60C VEHICLE TYRES , Fahrzeugreifen



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