Preparation method of high-hardness and high-transparency polyimide coated ultrathin glass
A polyimide, ultra-thin glass technology, applied in the field of display screen, can solve the problem of unable to meet the needs of mobile phone folding screen or curling screen, and achieve the effect of high flexibility, high transparency, and convenient process operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0049] See attached figure 1 with 2 A method for preparing high-hardness and high-transparency polyimide-coated ultra-thin glass provided by the present invention comprises the following steps:
[0050] S1: Preparation of thin glass by overflow down-draw method;
[0051] S2: Thin glass is heated and stretched in the first, second and third stages by multiple high-temperature tension rollers;
[0052] S3: cooling the thin glass through several tension rollers to obtain glass film;
[0053] S4: coating the slurry of transparent polyimide on the glass film;
[0054] S5: After the glass film is dried, a finished product of a transparent polyimide glass composite film is formed.
[0055] Further, step S1 is specifically:
[0056]Using the overflow down-draw method, the raw materials are mixed according to the set ratio, and melted to make molten glass; the molten glass flows into the overflow tank through the platinum channel after being stirred and clarified; when the molten ...
Embodiment 1
[0068] S1: The raw materials are mixed according to the set ratio by the overflow pull-down method, and melted to make molten glass; the molten glass flows into the overflow tank through the platinum channel after being stirred and clarified; after the molten glass overflows, it flows from both sides of the overflow tank The overflow flows down evenly along the conical part of the overflow tank, merges together at the lower part of the conical shape, and pulls down to form a large piece of glass, which forms a thin glass during the continuous stretching process; the thickness of the thin glass is 220um.
[0069] S2: The thin glass passes through the first high-temperature tension roller for secondary heating, and the temperature is controlled at 110°C above the glass transition temperature; the second high-temperature tension roller is used to stretch and thin the thin glass, reducing the thickness of the thin glass to 42um. The thin glass passes through the third high-temperat...
Embodiment 2
[0075] S1: The raw materials are mixed according to the set ratio by the overflow pull-down method, and melted to make molten glass; the molten glass flows into the overflow tank through the platinum channel after being stirred and clarified; after the molten glass overflows, it flows from both sides of the overflow tank The overflow flows down evenly along the conical part of the overflow tank, merges together at the lower part of the conical shape, and pulls down to form a large piece of glass, which forms a thin glass during the continuous stretching process; the thickness of the thin glass is 240um.
[0076] S2: The thin glass passes through the first high-temperature tension roller for secondary heating, and the temperature is controlled at 130°C above the glass transition temperature; the second high-temperature tension roller is used to stretch and thin the thin glass, reducing the thickness of the thin glass to 44um. The thin glass passes through the third high-temperat...
PUM
| Property | Measurement | Unit |
|---|---|---|
| radius | aaaaa | aaaaa |
| Vickers hardness | aaaaa | aaaaa |
| radius | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More