The invention discloses an automobile sound insulation pad and a preparation method thereof. The preparation method comprises the following steps: 65-75% of superfine fibers and 25-35% of low-melting-point fibers are adopted as raw materials of a soft felt layer; a soft felt layer is manufactured through a cold material hot mold method hot forming process, the steam temperature is set between 180 DEG C and 220 DEG C, continuous heating is conducted for 1-2 minutes, pressure maintaining is conducted, and cooling forming is conducted; performing mould pressing and preforming to manufacture a hard felt layer; a bonding layer is arranged between the hard felt layer and the soft felt layer; and carrying out hot press molding on the hard felt layer, the bonding layer and the soft felt layer. The automobile sound insulation pad has the advantages of being light in weight, excellent in sound absorption and insulation performance, good in smell and the like, more complex part structures can be produced, and the automobile sound insulation pad can be applied to more complex structure environments of automobiles. In addition, by means of the preparation method, the sound insulation pad with more complex structural characteristics can be produced, and the application range of the sound insulation pad made of the superfine fibers on the whole vehicle is widened.

    一种汽车隔音垫及其制备方法,该制备方法包括:采用65%‑75%的超细纤维以及25%‑35%的低熔点纤维作为软毡层的原材料;利用冷料热模法热成形工艺制作软毡层,将蒸汽温度设定在180℃‑220℃之间,持续加热1‑2分钟,保压、冷却成型;模压预成型制作硬毡层;在硬毡层和软毡层之间设置粘合层;将硬毡层、粘合层、软毡层热压成型。本发明的汽车隔音垫不仅具有重量轻、吸隔声性能优良、气味好等优势,还能生产出更加复杂的零部件结构,可以应用在汽车上更多、更复杂的结构环境中。此外,本发明的制备方法可以生产出来更加复杂的结构特征,提升了超细纤维类的隔音垫在整车上的应用范围。


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    Title :

    Automobile sound insulation pad and preparation method thereof


    Additional title:

    一种汽车隔音垫及其制备方法


    Contributors:
    WANG KAI (author) / WU DI (author) / YAN WEIHUA (author) / HUANG XIAOHAN (author) / LI FEIYUE (author) / HE LIHUI (author) / SONG GANG (author)

    Publication date :

    2022-11-01


    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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