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Dielectric constant-adjustable composite resistive film and preparation method thereof

A composite resistance and dielectric constant technology, which is applied in the field of composite resistance film and preparation, can solve the problems of difficult parameter adjustment, small adjustment range, and small quality, and achieve good optical characteristics, electrical and thermal conductivity, adjustable parameters, The effect of low density

Active Publication Date: 2020-01-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the current technology of resistive film, its parameters are not easy to control under a fixed quality, and the control range is relatively small, so it will limit its application scenarios; especially for electronic products used in aerospace, there will be many special requirements, such as requirements Small mass, high and low temperature impact resistance, vibration resistance and other performance requirements

Method used

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  • Dielectric constant-adjustable composite resistive film and preparation method thereof
  • Dielectric constant-adjustable composite resistive film and preparation method thereof
  • Dielectric constant-adjustable composite resistive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: add 40g of the mixture of carbon black and graphene in 100g deionized water, wherein the mass ratio of carbon black and graphene is 25:2; then add 1.2g sodium dodecyl sulfate (SDS); at room temperature Carry out ball milling, the ball milling speed is 300rad / min, and the ball milling time is 60min, to obtain a carbon black / graphene mixed solution.

[0028] Step 2: Add 1.0g of carbon nanofibers and 0.4g of BYK-190 to the mixed solution of carbon black / graphene prepared in step 1, and perform ultrasonic vibration and mechanical stirring at room temperature at the same time. The ultrasonic vibration power is 400W, and the mechanical stirring The rotational speed was 700 rad / min, and the time of ultrasonic vibration and mechanical stirring was 30 min to obtain a uniformly dispersed carbon black / graphene / carbon nanofiber mixed solution.

[0029] Step 3: in the carbon black / graphene / carbon nanofiber mixed solution that step 2 makes, add 60g aqueous polyurethane resin,...

Embodiment 2

[0034] Step 1: add 40g of the mixture of carbon black and graphene in 100g deionized water, wherein the mass ratio of carbon black and graphene is 23:3; then add 1.2g sodium dodecyl sulfate (SDS); at room temperature Carry out ball milling, the ball milling speed is 300rad / min, and the ball milling time is 60min, to obtain a carbon black / graphene mixed solution.

[0035] Step 2: Add 1.2g of carbon nanofibers and 0.6g of BYK-190 to the mixed solution of carbon black / graphene prepared in step 1, and perform ultrasonic oscillation and mechanical stirring at room temperature at the same time. The ultrasonic oscillation power is 400W, and the mechanical stirring The rotational speed was 700 rad / min, and the time of ultrasonic vibration and mechanical stirring was 30 min to obtain a carbon black / graphene / carbon nanofiber mixed solution.

[0036] Step 3: in the carbon black / graphene / carbon nanofiber mixed solution that step 2 makes, add 60g aqueous polyurethane resin, and carry out m...

Embodiment 3

[0041] Step 1: add 40g of the mixture of carbon black and graphene in 100g deionized water, wherein the mass ratio of carbon black and graphene is 21:4; then add 1.2g sodium dodecyl sulfate (SDS); at room temperature Carry out ball milling, the ball milling speed is 300rad / min, and the ball milling time is 60min, to obtain a carbon black / graphene mixed solution.

[0042] Step 2: Add 1.2g of carbon nanofibers and 0.4g of BYK-190 to the carbon black / graphene mixed solution prepared in step 1, and perform ultrasonic oscillation and mechanical stirring at room temperature at the same time. The ultrasonic oscillation power is 400W, and the mechanical stirring speed is 700 rad / min, ultrasonic vibration and mechanical stirring for 30 min, to obtain a carbon black / graphene / carbon nanofiber mixed solution.

[0043] Step 3: in the carbon black / graphene / carbon nanofiber mixed solution that step 2 makes, add 60g aqueous polyurethane resin, carry out mechanical stirring at room temperature...

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Abstract

The invention belongs to the technical field of electronic materials, and particularly relates to a dielectric constant-adjustable composite resistive film and a preparation method thereof. Accordingto the invention, graphene, carbon nanofiber and carbon black are compounded to prepare the resistive film, so that a better resistivity regulation and control range is realized, and the applicabilityof the resistive film is expanded; the characteristics of stable chemical performance, corrosion resistance, high and low temperature cyclic impact resistance, radiation resistance and the like of carbon nanofiber are utilized, and certain adsorption performance on infrared light and electromagnetic waves is achieved; and graphene has the advantages of high strength, good toughness, good opticalcharacteristics and good electric conduction and heat conduction performances. The finally prepared composite resistive film has the characteristics of small density, corrosion resistance, good toughness and adjustable parameters; and the preparation method is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and in particular relates to a composite resistance film with adjustable dielectric constant and a preparation method. Background technique [0002] With the rapid development of the information technology era, a variety of new-generation civilian and military electronic products have put forward performance requirements for light weight, flexibility, high performance, and parameter controllability in the field of electronic materials. [0003] It is against this background that the research and development of lightweight, flexible, and adjustable resistance film materials has attracted extensive research and development interest. The existing resistive film systems are all prepared from a single raw material; they can be divided into metal-based resistive films and non-metallic resistive films according to material categories. Metal-based resistive films have disadvantages such as h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K3/04C08K7/06C08J5/18
CPCC08J5/18C08J2375/04C08K3/04C08K7/06C08K2201/003C08K2201/004C08K2201/011C08K3/042
Inventor 周佩珩王睿陈海燕谢海岩梁迪飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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