本发明涉及轮胎制造新材料技术领域,尤其涉及一种用于降低轮胎噪音的下胎面胶料组合物及充气轮胎。该下胎面组合物由包含以下原料混炼制备得到:100重量份橡胶组分和1.0‑10.0重量份(a)发泡材料,以及(b)增强填料,其中组分(a)和(b)的总量为30到130重量份;所述的发泡材料由发泡母胶粒和多孔硅藻土构成,发泡母胶粒和多孔硅藻土的质量比为1:5~5:1;发泡母胶粒母胶粒采用三元乙丙橡胶,化学发泡剂采用发泡胶囊;多孔硅藻土为淡水藻类化石,扫描电镜所测粒径为5‑20um,氮吸附比表面积NSA为25‑40m2/g,pH值接近中性的带有孔状结构的柱状无机填料。采用该组合物作为为轮胎的下胎面部分,可以降低了轮胎噪音。

    The invention relates to the technical field of new materials for tire manufacturing, and in particular, relates to a lower tread rubber composition for reducing tire noise and a pneumatic tire. The lower tread composition is prepared by mixing the following raw materials: 100 parts by weight of a rubber component, 1.0-10.0 parts by weight of (a) a foaming material and (b) a reinforcing filler, wherein the total amount of the components (a) and (b) is 30-130 parts by weight; the foaming material is composed of foaming master batch particles and porous diatomite, and the mass ratio of the foaming master batch particles to the porous diatomite is 1:5-5:1; and ethylene-propylene-diene rubber is adopted as the foaming master batch particles, and foaming capsules are adopted as chemical foaming agents. The porous diatomite is freshwater algae fossil, and is a columnar inorganic filler with a porous structure, wherein the particle size measured by a scanning electron microscope is 5-20 [mu]m, the nitrogen adsorption specific surface area (NSA) is 25-40 m<2>/g, and the pH value is close to neutral. When the composition is used as the lower tread part of the tire, the tire noise can be reduced.


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    Titel :

    一种用于降低轮胎噪音的下胎面胶料组合物及充气轮胎


    Erscheinungsdatum :

    2023-02-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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