PROBLEM TO BE SOLVED: To provide a rubber composition improving molding quality without causing deterioration in appearance quality and dimensional accuracy, and in which the lightening characteristic of the same is attained.SOLUTION: Provided is a rubber composition obtained by kneading a glass balloon and a thermoexpansible micro capsule or an organic foaming agent into raw material rubber in the form of joint use, in which the addition amount of the glass balloon is 10 to 30 pts.wt., and a mixed ratio of both the glass balloon and the thermoexpansible micro capsule or organic foaming agent obtained by removing the addition amount of the glass balloon with the addition amount of the thermoexpansible micro capsule or organic foaming agent is 10 to 100. Desirably, the pressure strength of the glass balloon is controlled to 80 MPa or higher. The rubber composition part is used as the material, e.g., upon injection molding for an automobile steering hole cover with a die.SELECTED DRAWING: None

    【課題】外観品質や寸法精度の低下をもたらすことがないように成形品質の向上を図り、本来の軽量化が図れるようにしたゴム組成物を提供する。【解決手段】ガラスバルーンと熱膨張性マイクロカプセルまたは有機系発泡剤を併用するかたちで原料ゴム中に混練りしたゴム組成物であり、ガラスバルーンの添加量を10〜30重量部とし、ガラスバルーンの添加量を熱膨張性マイクロカプセルまたは有機系発泡剤の添加量で除した両者の混合比を10〜100としてある。望ましくは、ガラスバルーンの耐圧強度を80MPa以上とする。かかるゴム組成部は、例えば自動車のステアリングホールカバーを金型を用いて射出成形する際の材料として使用する。【選択図】なし


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    Title :

    RUBBER COMPOSITION AND STEERING HOLE COVER


    Additional title:

    ゴム組成物およびステアリングホールカバー


    Contributors:
    TANI OSAMU (author) / SUYAMA NORIAKI (author)

    Publication date :

    2017-02-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B62D MOTOR VEHICLES , Motorfahrzeuge / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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