A cross-linked polyimide film with solvent resistance and high dimensional stability
A polyimide film and dimensional stability technology, applied in the field of cross-linked polyimide film, can solve the problem that the dimensional stability and mechanical properties of the film cannot be more effectively improved, the service life is reduced, the overall performance is reduced, etc. problem, to achieve the effect of colorless and transparent solvent resistance, improved light transparency, and excellent mechanical properties
Active Publication Date: 2022-05-31
浙江中科玖源新材料有限公司
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Problems solved by technology
However, when adding a small molecule cross-linking agent in the past, although its solvent resistance and light transmittance can be improved, the dimensional stability and mechanical properties of the film cannot be improved more effectively, so the mechanical strength may be damaged during use. Insufficient and broken, resulting in a decline in overall performance and reduced service life
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Abstract
The present invention proposes a cross-linked polyimide film with solvent resistance and high dimensional stability, the transmittance of light with a wavelength of 400nm can reach more than 80%, the glass transition temperature is above 340°C, and the tensile strength is 150MPa Above, the solvent resistance index is within 1%. At the same time, the present invention also proposes to use the cross-linked polyimide film for photoelectric display devices and other products and components that have high requirements for light transmission and solvent resistance.
Description
A solvent-resistant and highly dimensionally stable cross-linked polyimide film technical field The present invention relates to the technical field of optical materials, in particular to a kind of cross-linked polymer with solvent resistance and high dimensional stability. Imide film. Background technique Polyimide is one of the materials with the best heat resistance in existing polymers, and aromatic polyimide is Molecular chain structure and strong intermolecular force, in addition to excellent heat resistance, it also has thermal stability, dimensional stability properties, mechanical properties, chemical stability and radiation resistance. In addition, the designability of polyimide molecules and the special two-step reaction Its characteristics make it more advantageous in processing, application and research than other rigid chain polymers, so polyimide It has become one of the best choices for OLED display cover and substrate materials. Previously, appl...
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IPC IPC(8): C08G73/10C08G73/12C08J5/18C08L79/08
CPCC08G73/1071C08G73/1042C08G73/1039C08G73/1078C08G73/123C08G73/124C08J5/18C08J2379/08Y02E10/549
Inventor 李南文许辉
Owner 浙江中科玖源新材料有限公司
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