A transparent heat-conducting polyimide film, a preparation method and application thereof
By introducing transparent thermally conductive fillers into transparent colorless polyimide resin, the problem that existing materials cannot simultaneously possess both thermal conductivity and light transmittance is solved, and a transparent thermally conductive polyimide film with excellent thermal conductivity and light transmittance is prepared.
CN122127785APending Publication Date: 2026-06-02SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Filing Date
- 2026-03-23
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing thermally conductive materials struggle to maintain both light transmittance and excellent thermal conductivity.
Method used
Transparent thermally conductive polyimide films were prepared by introducing transparent thermally conductive fillers into transparent colorless polyimide resin, screening for suitable particle sizes and surface modification treatments.
Benefits of technology
It improves the thermal conductivity of the film while maintaining good light transmittance. The process is safe and simple, making it suitable for large-scale production.
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Smart Images
Figure CN122127785A_ABST
Abstract
This invention discloses a transparent thermally conductive polyimide film, its preparation method, and its application. The preparation method includes the following steps: S1, screening and cleaning the transparent thermally conductive filler, modifying the transparent thermally conductive filler with a surface modifier, and dispersing it in a solvent to obtain a modified transparent thermally conductive filler dispersion; S2, mixing the above modified transparent thermally conductive filler dispersion with a transparent colorless polyimide resin to obtain a precursor solution; S3, coating the precursor solution onto a glass plate, and after imidization, obtaining the transparent thermally conductive polyimide film. This invention, by using a transparent thermally conductive filler and rationally screening its size and designing the thermal conductivity pathways, improves the thermal conductivity of the transparent thermally conductive polyimide film while ensuring good light transmittance. The transparent thermally conductive polyimide film prepared by this invention not only has good light transmittance but also good thermal conductivity.
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