Preparation method of high-dielectric polyimide/calcium copper titanate nanowire composite material

A technology of copper calcium titanate and polyimide, which is applied in the field of preparation of high dielectric polyimide/copper calcium titanate (CCTO) nanowire composite materials, can solve the difficulty of intercalation of macromolecules and reduce percolation Threshold, high aspect ratio, etc., to achieve the effect of reducing the percolation threshold, saving manpower, and improving dielectric properties
CN103396548AInactive Publication Date: 2013-11-20武汉一海数字医疗科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
武汉一海数字医疗科技股份有限公司
Publication Date
2013-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a high-dielectric polyimide / calcium copper titanate nanowire composite material. The composite material is prepared by using polymer as a substrate. The method comprises the following steps: carrying out ultrasonic dispersion on calcium copper titanate nanowires in anhydrous ethanol, blending with a polyimide monomer in a solvent, and carrying out in-situ polymerization reaction on the monomer at room temperature while implementing copolymerization of polyimide and intercalation compounding with calcium copper titanate nanowires; and carrying out gradient annealing on the stock solution by a coating process to obtain the polyimide / CCTO nanowire composite film. Compared with pure polyimide, the dielectric constant of the polyimide / calcium copper titanate nanowire composite material is enhanced by 25 times, the dielectric loss is lower (0.015), and thus, the polyimide / calcium copper titanate nanowire composite material has wide application prospects in the fields of high energy storage capacitors, artificial organs, high speed integrated circuits and the like.
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Description

[0001] technical field

[0002] The invention relates to a preparation method of a high-dielectric polyimide / copper calcium titanate (CCTO) nanowire composite material, which belongs to the field of electronic materials. Background technique

[0003] Polymers are widely used in capacitors, integrated circuits, and high-voltage insulation due to their excellent electrical, thermal, and ductile properties, but their low dielectric constant limits their further development. With the continuous development of device integration and miniaturization in today's electronic field, it is necessary to provide new materials with both high dielectric constant and low dielectric loss to meet the requirements.

[0004] In order to obtain the required high-performance materials, the commonly used method is to modify polymer materials by doping. There are two commonly used doping methods. One is to prepare a polymer / ferroelectric ceramic composite material by combining ferroelectric ceramic...

Claims

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