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Graphene PI composite material as well as preparation method and application thereof

A composite material and graphene technology, which is applied in the direction of conductive coating, additive processing, epoxy resin coating, etc., can solve the problem of complex construction process, affecting the appearance smoothness of the subsequent coating process, and poor adhesion between the coating and the middle frame substrate. Stability and other issues, to achieve the effects of excellent signal conduction, excellent substrate adhesion, and excellent electrical and thermal conductivity

Pending Publication Date: 2021-07-02
东莞市鹏威能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1. The adhesion between the coating and the base material of the middle frame is unstable; 2. A thicker coating is required to meet the standard performance parameters; 3. The gap between the thick coating and the base material is formed Affects the smoothness of the appearance of the subsequent coating process; 4. The construction process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A kind of preparation method of graphene PI composite material, comprises the steps:

[0032] First add the active monomer to the dispersion tank, and disperse for 10 minutes at a speed of 500 rpm;

[0033] Then add photoinitiator and dispersant, and disperse for 10 minutes at a speed of 500 rpm;

[0034] Then add graphene, disperse for 20 minutes at a speed of 2000 rpm, and then use ultrasonic dispersion to obtain a semi-finished product, and use an electron microscope to detect the fineness of the semi-finished product≤200nm;

[0035] Put the semi-finished product into the disperser, then add high molecular PI composite polymer and leveling agent, disperse for 30 minutes at a speed of 2000 rpm, filter and pack.

[0036] In the step of adding graphene again, dispersing at a speed of 2000 rpm for 20 minutes, then using ultrasonic dispersion to obtain a semi-finished product, and using an electron microscope to detect the fineness of the semi-finished product≤200nm, the...

Embodiment 1

[0039] A graphene PI composite material is composed of the following components by mass percentage: high molecular PI composite polymer 35%; active monomer 50%; photoinitiator 7%; graphene 5%; dispersant 2%; leveling agent 1%.

[0040] A kind of preparation method of graphene PI composite material, comprises the steps: first active monomer is added into dispersing kettle, disperses 10 minutes with the speed of 500 revs / min; Disperse at a speed of 10 minutes; then add graphene, disperse at a speed of 2000 rpm for 20 minutes, then use ultrasonic dispersion for 1.5-2.0 hours to obtain a semi-finished product, and use an electron microscope to detect the fineness of the semi-finished product ≤ 200nm; add the semi-finished product to the disperser , and then add high-molecular PI composite polymer and leveling agent, disperse for 30 minutes at a speed of 2000 rpm, filter and pack.

Embodiment 2

[0042] A graphene PI composite material is composed of the following components by mass percentage: high molecular PI composite polymer 40%; active monomer 45%; photoinitiator 7%; graphene 5%; dispersant 2%; leveling agent 1%.

[0043] A kind of preparation method of graphene PI composite material, comprises the steps: first active monomer is added into dispersing kettle, disperses 10 minutes with the speed of 500 revs / min; Disperse at a speed of 10 minutes; then add graphene, disperse at a speed of 2000 rpm for 20 minutes, then use ultrasonic dispersion for 1.5-2.0 hours to obtain a semi-finished product, and use an electron microscope to detect the fineness of the semi-finished product ≤ 200nm; add the semi-finished product to the disperser , and then add high-molecular PI composite polymer and leveling agent, disperse for 30 minutes at a speed of 2000 rpm, filter and pack.

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Abstract

The invention relates to the field of graphene materials, in particular to a graphene PI composite material which is composed of the following components in percentage by mass: 35-45% of high-molecular PI composite polymer; 40-50% of an active monomer; 5-8% of a photoinitiator; 3-5% of graphene; 1-2% of a dispersant; and 0.5-1% of a leveling agent. The graphene PI composite material provided by the invention has excellent base material adhesiveness, excellent electrical and thermal conductivity, excellent signal conduction performance and the like. The invention also provides a preparation method of the graphene PI composite material without VOC emission and pollution.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a graphene PI composite material, its preparation method and its application. Background technique [0002] The traditional mobile phone signal transmission system uses LDS and PDS processes to chemically plate the signal transmission metal on the side of the middle frame of the mobile phone, and then paint the appearance. The disadvantages of this method are: 1. The adhesion between the coating and the base material of the middle frame is unstable; 2. A thicker coating is required to meet the standard performance parameters; 3. The gap between the thick coating and the base material is formed It affects the smoothness of the appearance of the coating process in the later stage; 4. The construction process is complicated. [0003] Therefore, the technical field needs a graphene PI composite material to solve the above problems. Contents of the invention [0004] In order to ...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D163/00C09D7/61C09D7/47C09D7/65B33Y70/10
CPCC09D179/085C09D163/00C09D7/61C09D7/47C09D7/65C09D5/24B33Y70/10C08K2201/011C08L2201/04C08L2205/035C08L63/00C08L75/04C08L83/12C08K3/042C08L79/085
Inventor 徐彬钟永海
Owner 东莞市鹏威能源科技有限公司
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