Polyimide printing film used for flexible metal-clad plate, preparation method of polyimide printing film and flexible metal-clad plate
A polyimide and metal-clad technology, which is applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problems of poor bonding between the metal layer and the polyimide film layer, and achieve enhanced The effect of binding force, improving adhesion, and avoiding peeling
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[0036] The invention provides a method for preparing a polyimide printing film for a flexible metal-clad plate, comprising the following steps:
[0037] a) Coating a mixture of particles with microporous structure and thermoplastic polyimide hybrid resin on the polyimide base film layer;
[0038] b) After the mixture obtained in step a) is cured and imidized, the surface thermoplastic polyimide hybrid resin is removed to obtain a polyimide printing film;
[0039] The exposed area of the particles with a microporous structure accounts for 10% to 90% of the surface area of the entire particles.
[0040] The invention first coats the mixture of particles with microporous structure and thermoplastic polyimide hybrid resin on the polyimide base film layer to obtain a semi-finished product with polyimide printing film. The present invention preferably firstly mixes particles with a microporous structure and a thermoplastic polyimide hybrid resin to obtain a mixture, and then co...
Embodiment 1
[0058] Use a coater to evenly coat a layer of mixture of microporous nano silicon dioxide and thermoplastic polyimide hybrid resin TPI on the surface of the high heat-resistant polyimide base film, in the mixture, the micro The volume ratio of porous nano silica to the thermoplastic polyimide hybrid resin is 0.1:1, and the coating thickness is 1 μm. After the coating is completed, the semi-finished product of the polyimide printing film is successively incubated at 50°C for 1h, at 150°C for 1h, at 250°C for 1h, and at 340°C for 0.5h. amination treatment, and then the samples after imidization treatment in CF4 (flow 200mL / min) and O 2 (Flow rate: 500mL / min) vacuum plasma etching was performed for 15 minutes to obtain a polyimide printing film for flexible metal-clad plates. The present invention adopts Japanese Mitutoyo SV3100 surface roughness tester to test the roughness of the polyimide printing film used for flexible metal-clad plates obtained in this embodiment. The surf...
Embodiment 2
[0060] Use a coater to evenly coat a layer of microporous nano-silica and thermoplastic polyimide hybrid resin TPI on the surface of the high heat-resistant polyimide base film. In the mixture, the micropores The volume ratio of nano silicon dioxide to the thermoplastic polyimide hybrid resin is 0.4:1, and the coating thickness is 2 μm. After the coating is completed, the semi-finished polyimide printing film obtained is kept at 50°C for 1h, 150°C for 2h, 250°C for 1h, and 320°C for 0.5h. After the heat preservation is completed, it is subjected to imidization treatment , and then place the imidized sample in CF 4 (flow 300mL / min) and O 2 (Flow rate: 400mL / min) vacuum plasma etching for 5 minutes in an atmosphere to obtain a polyimide printing film for a flexible metal-clad plate.
[0061] The present invention adopts Japanese Mitutoyo SV3100 surface roughness tester to test the roughness of the polyimide mold obtained in this example. The surface roughness Rz of the film w...
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Abstract
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