The invention relates to an engine sound insulation cover cap and a preparation method thereof. The engine sound insulation cover cap comprises a honeycomb plate, a first glass fiber felt, a second glass fiber felt, a fiber felt and a rigid plate. The first glass fiber felt and the second glass fiber felt are respectively arranged on two opposite surfaces of the cellular board, the fiber felt is arranged on the surface, deviating from the cellular board, of the first glass fiber felt, and the rigid board is arranged on the surface, deviating from the cellular board, of the second glass fiber felt; the cellular board and the first glass fiber felt, the cellular board and the second glass fiber felt, the first glass fiber felt and the fiber felt, and the second glass fiber felt and the rigid board are bonded through polyurethane foaming layers. According to the structure, the structure that the fiber felt is compounded with the cellular board and the rigid board is adopted, sound waves are weakened after being subjected to multiple scattered reflection and conversion of the fiber felt, the cellular board and the rigid board in sequence, the sound insulation effect is greatly improved compared with a traditional structure, and the weight is greatly reduced compared with a traditional plastic or metal cover.

    本申请涉及一种发动机隔音罩盖及其制备方法,包括蜂窝板、第一玻纤毡、第二玻纤毡、纤维毡和刚性板;所述第一玻纤毡和所述第二玻纤毡分别设置在所述蜂窝板上相对的两个表面,所述纤维毡设置在所述第一玻纤毡上背离所述蜂窝板的表面,所述刚性板设置在所述第二玻纤毡上背离所述蜂窝板的表面;所述蜂窝板和所述第一玻纤毡之间、所述蜂窝板和所述第二玻纤毡之间、所述第一玻纤毡和所述纤维毡之间、所述第二玻纤毡和所述刚性板之间通过聚氨酯发泡层粘接。本申请提供的结构,采用纤维毡复合蜂窝板及刚性板的结构,声波先后经过纤维毡、蜂窝板和刚性板的多重散反射和转化后被削弱,隔音效果较传统结构有较大提升,且重量较传统塑料或金属罩盖大幅减轻。


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    Title :

    Engine sound insulation cover cap and preparation method thereof


    Additional title:

    一种发动机隔音罩盖及其制备方法


    Contributors:
    LIU WEI (author) / LI KUN (author) / MA HUAYUE (author) / TAO JUN (author) / LI DONGBIN (author) / WANG YANMIN (author) / ZOU DEPING (author)

    Publication date :

    2022-11-08


    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 / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B62D MOTOR VEHICLES , Motorfahrzeuge



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