The invention relates to the technical field of vehicle exterior trimming, in particular to a foamed polypropylene plate and a preparation method thereof, a wheel cover lining plate and a preparation method thereof, and further relates to a vehicle. The preparation method of the foamed polypropylene plate comprises the following steps: fully mixing raw materials, and adding the mixture into a single-screw extruder, wherein the raw materials comprise polypropylene particles, a foaming agent, a catalyst, a nucleating agent and white oil; the length-diameter ratio of the single-screw extruder is controlled to be larger than or equal to 20, the rotating speed of a screw is controlled to be 10 r/min-30 r/min, the pressure drop of a die head is 6 MPa-12 MPa, the temperature of a T-shaped die head is controlled to be 180 DEG C-230 DEG C, the gap of the T-shaped die head is controlled to be 0.5 mm-5 mm, the length of the T-shaped die head is controlled to be 0.5 m-2 m, and raw materials are extruded through the single-screw extruder to obtain the foamed polypropylene plate. The wheel cover lining plate of the automobile is manufactured through hot pressing of the special light-weight materials, the strength use requirement of the wheel cover lining plate can be met, the density can be greatly reduced, the weight of the wheel cover lining plate is greatly reduced, and the development period is shortened.

    本申请涉及车辆外饰技术领域,具体涉及一种发泡聚丙烯板材及其制备方法、轮罩衬板及其制备方法,还涉及一种车辆。发泡聚丙烯板材的制备方法包括以下步骤:将原料充分混合后加入单螺杆挤出机中,所述原料包括聚丙烯粒子、发泡剂、催化剂、成核剂和白油;控制单螺杆挤出机的长径比大于或等于20,螺杆转速为10r/min‑30r/min,模头压力降为6Mpa‑12MPa,T型模头温度为180℃‑230℃,T型模头间隙为0.5mm~5mm,T型模头长度为0.5m~2m,原料经单螺杆挤出机挤出后得到发泡聚丙烯板材。本申请采用特殊轻量化材料热压制作汽车的轮罩衬板,既能保证轮罩衬板的强度使用要求,而且可以实现密度大幅降低,轮罩衬板重量大幅减小,开发周期缩短。


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    Titel :

    Foamed polypropylene plate and preparation method thereof, wheel cover lining plate and preparation method thereof, and vehicle


    Weitere Titelangaben:

    发泡聚丙烯板材及其制备方法、轮罩衬板及其制备方法、车辆


    Beteiligte:
    FANG KEJIE (Autor:in) / WU CONGJIN (Autor:in) / HUANG JINCHENG (Autor:in)

    Erscheinungsdatum :

    2023-08-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B62D MOTOR VEHICLES , Motorfahrzeuge / C08J Verarbeitung , WORKING-UP / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS




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