The invention discloses a three-layer structure PVB intermediate film for an automobile front windshield and a preparation method of the three-layer structure PVB intermediate film, and belongs to the technical field of automobile windshields, the three-layer structure PVB intermediate film is formed by sequentially compounding a film A, a film B and a film C. The film B of the intermediate layer is prepared from the following raw materials in percentage by mass: 0-0.1% of an auxiliary agent, 20-65% of a plasticizer and the balance of PVB resin. Each of the film A and the film C comprises the following raw materials in percentage by mass: 10-30% of a plasticizer, 0.01-0.1% of an auxiliary agent, 0.5-2.0% of a viscosity modifier and the balance of PVB (Polyvinyl Butyral) resin.The viscosity modifier is added into the film A and the film C, so that the rigidity of the glass is reduced, the glass is easy to deform and absorb energy when a pedestrian is collided by an outer front windshield, the degree of collision to a human body is weakened, and the safety of the pedestrian is improved. The brain injury of people is relieved, and the HIC value of the windshield is smaller than or equal to 800.

    本发明公开了一种汽车前挡风玻璃用三层结构PVB中间膜及其制备方法,属于汽车挡风玻璃技术领域,依次由A、B、C三层薄膜复合而成,中间层B薄膜包括以下质量百分比的原料:助剂0‑0.1%、增塑剂20‑65%,余量为PVB树脂,A薄膜和C薄膜均包括以下质量百分比的原料:增塑剂10‑30%、助剂0.01‑0.1%、粘度调节剂0.5‑2.0%,余量为PVB树脂,发明通过在A薄膜和C薄膜中加入粘度调节剂,降低玻璃刚性,使行人受外侧前挡风玻璃碰撞时,玻璃易变形吸能,减弱对人体的撞击程度,减轻人的大脑损伤,使挡风玻璃的HIC值≤800。


    Access

    Download


    Export, share and cite



    Title :

    Three-layer structure PVB (Polyvinyl Butyral) intermediate film for automobile front windshield and preparation method thereof


    Additional title:

    汽车前挡风玻璃用三层结构PVB中间膜及其制备方法


    Contributors:
    XU HONGPING (author) / FAN HOUNENG (author) / JIN FEI (author) / ZHAI SHIBAO (author) / CHEN LINGLING (author)

    Publication date :

    2024-05-31


    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 / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge



    PVB (polyvinyl butyral) film for automobile sunroof, preparation method of PVB film and automobile sunroof

    JIN FEI / ZHAI SHIBAO / CHEN LINGLING et al. | European Patent Office | 2024

    Free access

    Two-color gradient PVB (polyvinyl butyral) film and preparation method thereof

    LIN JIABAO / YE JUNSHENG | European Patent Office | 2025

    Free access

    Front windshield support, preparation method thereof and automobile

    LIN ZHIQING / SHEN JUNLONG / LIN JUNFENG et al. | European Patent Office | 2024

    Free access

    Anti-reflection coating layer of automobile front windshield, low-reflection film and front windshield

    LYU JINGBO / HU YEXIN / YU PEIQIANG et al. | European Patent Office | 2023

    Free access

    Discoloration of Polyvinyl Butyral

    Kim, Q. / Shumka, A. | NTRS | 1986