Preparation method of hyper branched copolymerized polyimide/zinc oxide (ZnO) hybrid insulated film

Abstract

The invention provides a preparation method of a hyper branched copolymerized polyimide/zinc oxide (ZnO) hybrid insulated film, and the method comprises the following steps: preparing a hyper branched copolymerized polyamide acid film: employing 3,3',4,4'-tetracarboxydiphthalic ether dianhydride, triamine monomer 1,3,5-tri[4-(4-aminophenoxy)phenyl]benzene and 4,4'-diaminodiphenyl ether three monomers as raw materials, carrying out condensation polymerization according to a mole proportion 1:0.4:0.5, and obtaining a yellow viscous transparent solution; dropping the obtained solution on a glass plate with a silica gel frame, and obtaining the hyper branched copolymerized polyamide acid film after drying; completing imidization of the hyper branched copolymerized polyamide acid film by one step and forming zinc oxide nanoparticles: preparing a zinc chloride solution, totally soaking the hyper branched copolymerized polyamide acid film in a zinc chloride solution, after completing soaking, taking the hyper branched copolymerized polyamide acid film out for washing; and baking for preparing the product. By means of hybrid of hyper branched polyimide and nanometer zinc oxide, the dielectric constant is reduced and insulating property of the material is added, simultaneously heat resistance and mechanical performance are improved, thereby meeting requirements of different electronic components for materials.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a method for preparing a hyperbranched copolymerized polyimide / zinc oxide hybrid insulating film. Background technique [0002] The rapid development of modern science and technology has put forward higher requirements for the types and properties of materials, and the hybridization of materials can meet the requirements of some special properties. Hybrid materials are characterized by combining the advantages of various components and playing a multifunctional role. Appropriate hybridization of polyimide can not only retain its excellent performance, but also have some new characteristics to meet the higher requirements of modern industrial development for polyimide performance. Polyimide can effectively block electron migration, prevent chemical corrosion, enhance the moisture resistance and mechanical properties of electronic devices, so polyimide can be ...

AI Technical Summary

Problems solved by technology

In order to improve the signal transmission speed, the dielectric constant of the interlayer insulating material must be reduced to 2.0-2.6. Usually, the dielectric constant of polyimide material is 3.0-3.5, which is difficult to meet this requirement.

[0003] In order to reduce the dielectric constant of polyimide, among the existing researches, more composite materials are obtained by blending with linear polyimide, and this method is often due to the small size of the blend effect is more likely to agglomerate, so that the obtained composite material cannot effectively improve its dielectric properties

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