To provide wiper blade rubber that realizes compatibility of high attenuation characteristics effective in preventing noise and excellent low temperature characteristics while reducing environmental burden by restraining use of material derived from fossil fuel and using material derived from non-fossil fuel.SOLUTION: Wiper blade rubber contains natural rubber and modified natural rubber as rubber components, with a raw material ratio derived from non-fossil fuel being higher than 65%. A ratio (tan δ) of loss elastic modulus/storage elastic modulus in a measurement frequency of 10 Hz as measured using a viscoelasticity measurement method compliant with JIS K 6394:2007 has a local maximum in a range of -15°C to -35°C.SELECTED DRAWING: Figure 1

    【課題】 化石燃料由来の材料使用を抑え、非化石燃料由来の材料を使用することで環境負荷低減を図るとともに、異音防止に有効な高い減衰特性と優れた低温特性の両立を実現したワイパーブレードゴムを提供する。【解決手段】 ゴム成分として天然ゴムと改質天然ゴムとを含み、非化石燃料由来の原材料比率が65%よりも大きいワイパーブレードゴムであって、JIS K 6394:2007に準拠した粘弾性測定法を用い測定周波数10Hzにおける損失弾性率/貯蔵弾性率の比(tanδ)が-15℃~-35℃の範囲に極大値を有するワイパーブレードゴム。【選択図】 図1


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    Title :

    WIPER BLADE RUBBER


    Additional title:

    ワイパーブレードゴム


    Contributors:

    Publication date :

    2023-09-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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