Windshield and preparation method therefor, and vehicle

A preparation method for a windshield, wherein the preparation method is used to prepare a windshield, and the windshield comprises an outer glass panel, an intermediate layer, and an inner glass panel;

• the outer glass panel has a first surface and a second surface opposite to each other, the inner glass panel has a third surface and a fourth surface opposite to each other, the second surface and the third surface face towards each other, and the intermediate layer is connected between the second surface and the third surface;
• the windshield is provided with a weakened region, the weakened region comprises a first weakened region, the first weakened region is configured to be tested by an adult-headform impactor, and the first weakened region is configured to achieve a first head injury criterion (HIC) value HIC1 within a time period of 0 to 15 milliseconds (ms) after a moment at which the first weakened region is impacted by the adult-headform impactor;
• the weakened region further comprises a second weakened region, the second weakened region is configured to be tested by the adult-headform impactor, and the second weakened region is configured to achieve a second HIC value HIC2 within a time period of 0 to 15 ms after a moment at which the second weakened region is impacted by the adult-headform impactor;
• HIC1<HIC2 and HIC2<1000;
• and the preparation method comprises:
• providing a curved outer glass panel and a curved inner glass panel, wherein the outer glass panel has the first surface and the second surface opposite to each other, and the inner glass panel has the third surface and the fourth surface opposite to each other;
• providing the intermediate layer, and the outer glass panel, the intermediate layer, and the inner glass panel are sequentially stacked to form a laminated glass structure;
• and
• heating, vacuumizing and/or applying pressure to the laminated glass structure to obtain the windshield, wherein the windshield has the weakened region, and the weakened region comprises the first weakened region and the second weakened region.

A vehicle, comprising an instrument panel and a windshield, wherein the windshield comprises an outer glass panel, an intermediate layer, and an inner glass panel;

• the outer glass panel has a first surface and a second surface opposite to each other, the inner glass panel has a third surface and a fourth surface opposite to each other, the second surface and the third surface face towards each other, and the intermediate layer is connected between the second surface and the third surface;
• the windshield is provided with a weakened region, the weakened region comprises a first weakened region, the first weakened region is configured to be tested by an adult-headform impactor, and the first weakened region is configured to achieve a first head injury criterion (HIC) value HIC1 within a time period of 0 to 15 milliseconds (ms) after a moment at which the first weakened region is impacted by the adult-headform impactor;
• the weakened region further comprises a second weakened region, the second weakened region is configured to be tested by the adult-headform impactor, and the second weakened region is configured to achieve a second HIC value HIC2 within a time period of 0 to 15 ms after a moment at which the second weakened region is impacted by the adult-headform impactor;
• HIC1<HIC2 and HIC2<1000;
• and the instrument panel is disposed adjacent to a lower side of the windshield.