The invention discloses a TPU (thermoplastic polyurethane) composite film as well as a preparation process and application thereof. The TPU composite film at least comprises a TPU layer, wherein the TPU layer contains TPU and organic modified montmorillonite master batch in a mass ratio of 100: (2-5); the organic modified montmorillonite master batch comprises TPU (Thermoplastic Polyurethane) and montmorillonite lamellar crystals dispersed in the TPU. The preparation method comprises the following steps: respectively melting and extruding the components of the TPU layer and the PA layer, and co-extruding and casting to form a two-layer structure; and bonding the PI film and the PA layer, and cooling and molding to obtain the product. The TPU composite film disclosed by the invention is applied to the field of new energy automobiles, and has relatively low thermal shrinkage rate and relatively high strength loss temperature and vicat softening point.

    本发明公开了一种TPU复合薄膜及其制备工艺和应用。本发明的TPU复合薄膜至少包括TPU层,所述TPU层含有质量比为100:(2‑5)的TPU和有机改性蒙脱土母粒;所述有机改性蒙脱土母粒包括TPU和分散在TPU中的蒙脱土片晶。制备方法可以包括:将TPU层和PA层的组分分别熔融挤出后,再共挤流延成两层结构;将PI膜与PA层粘合,经冷却成型得到。本发明的TPU复合薄膜应用于新能源汽车领域,具有较低的热收缩率,并且具有较高的失强温度和维卡软化点。


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    Title :

    TPU (thermoplastic polyurethane) composite film as well as preparation process and application thereof


    Additional title:

    一种TPU复合薄膜及其制备工艺和应用


    Contributors:
    HAN GUIQUAN (author) / WANG XIAOSONG (author)

    Publication date :

    2023-12-12


    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 / 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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