The invention discloses an automobile engine hood heat insulation pad and a production process thereof, and relates to the technical field of automobile heat insulation pads. The heat insulation pad comprises a heat insulation pad body, the heat insulation pad body is formed by pressing decoration layers and a base layer, the base layer is arranged between the decoration layers, the base layer is made of a foaming material, and the decoration layers are made of a high-temperature-resistant fiber material. A plurality of groups of grooves and bulges are formed in the bottom surfaces of the decoration layers, a plurality of circular grooves are formed in the grooves and the bulges, and the circular grooves penetrate through the decoration layers and communicate with the base layer, so that the heat dissipation and sound wave receiving area is increased, and the heat dissipation and sound attenuation effects are further improved; and meanwhile, the base layer is made of a light foaming material, when sound waves pass through the light foaming layer, the sound waves are greatly dispersed and oscillated in small holes in the light foaming layer after being reflected for many times, and a large amount of sound energy is converted into heat energy to be consumed due to the friction and viscous resistance effects of the light foaming material, so that the silencing effect is improved.

    本发明公开一种汽车引擎盖隔热垫及其生产工艺,涉及汽车隔热垫技术领域,隔热垫包括隔热垫本体,隔热垫本体由装饰层和基层压合制成,基层介于装饰层之间,基层由发泡材料制成,装饰层由耐高温的纤维材料制成,装饰层底面开设有多组凹槽和凸起,在凹槽和凸起上开设有多个圆槽,圆槽贯穿装饰层与基层相通,提高了散热和声波的接受面积,进而提高了散热和消音的效果;同时基层由轻质发泡材料制成,当声波通过轻质发泡层时,声波被大量分散,并经过无数次的反射,在轻质发泡层中的细小孔洞内进行震荡,因轻质发泡的摩擦和粘滞阻力作用,使大量声能转化为热能被消耗,从而提高了消音的效果。


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    Title :

    Automobile engine hood heat insulation pad and production process thereof


    Additional title:

    一种汽车引擎盖隔热垫及其生产工艺


    Contributors:
    SONG ZHIHUI (author) / CHENG HUI (author) / CHEN TIANPING (author)

    Publication date :

    2021-08-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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