The invention relates to the technical field of sound insulation materials, in particular to an automobile sound insulation pad and a preparation method thereof. An automobile sound insulation pad comprises a sound insulation layer and a sound absorption layer, and the sound insulation layer comprises 10-20 parts of first TPU particles, 10-20 parts of second TPU particles, 70-120 parts of filler, 1-2 parts of a coupling agent, 5-10 parts of a plasticizer, 2-5 parts of carbon black, 1-2 parts of an antioxidant and 1-2 parts of a lubricant; the density of the first TPU particles is 1.2-1.3 g/cm < 3 >, and the hardness is 50-60 SHD; the density of the second TPU particles is 1.2-1.3 g/cm < 3 >, and the hardness is 60-80 SHA; the sound absorption layer is a PU foaming layer. The PU is similar to the TPU in structure and can be directly foamed on the TPU, pretreatment steps such as flame treatment and plasma treatment are not needed, and the treatment process is simple. The obtained sound insulation pad is made of the same material (polyurethane) and can be integrally recycled, so that resource waste and environmental pollution are reduced.

    本申请涉及隔音材料技术领域,尤其是一种汽车隔音垫及其制备方法。一种汽车隔音垫,包括隔音层与吸音层,隔音层包括:第一TPU颗粒10‑20份、第二TPU颗粒10‑20份、填料70‑120份、偶联剂1‑2份、增塑剂5‑10份、炭黑2‑5份、抗氧剂1‑2份、润滑剂1‑2份;第一TPU颗粒密度1.2‑1.3g/cm3、硬度50‑60 SHD;第二TPU颗粒密度1.2‑1.3g/cm3、硬度60‑80 SHA;吸音层为PU发泡层。PU与TPU结构相似,可以直接在TPU上进行发泡,无需进行火焰处理及等离子处理等预处理步骤,处理过程简单。得到的隔音垫为同一材质(聚氨酯),可以整体进行回收再利用,减少资源浪费与环境污染。


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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:
    HU LINJIA (author) / WEI GANG (author) / WANG JIE (author) / ZHAO JIANQING (author)

    Publication date :

    2025-03-28


    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 / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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



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