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Single-liquid polyurethane conductive coating and preparation method thereof

A kind of conductive paint, polyurethane technology, applied in the field of paint, can solve problems such as poor conductive effect

Active Publication Date: 2021-06-11
SUZHOU CHUANGYISHENG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a single-liquid polyurethane conductive coating that can improve the conductive effect for the problem of poor conductive effect of traditional polyurethane conductive coatings.

Method used

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  • Single-liquid polyurethane conductive coating and preparation method thereof
  • Single-liquid polyurethane conductive coating and preparation method thereof
  • Single-liquid polyurethane conductive coating and preparation method thereof

Examples

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preparation example Construction

[0031] The present invention also provides a kind of preparation method of single-liquid type polyurethane conductive coating, and it comprises the steps:

[0032] Mix the raw materials of the single-liquid polyurethane conductive coating according to any one of the present invention, and then perform ball milling treatment to obtain the single-liquid polyurethane conductive coating. Among them, the ball milling treatment is mainly to disperse the raw materials in the single-liquid polyurethane conductive coating evenly to obtain a uniformly dispersed system. It is more conducive to the respective functions of each raw material component. Secondly, ball milling can split and refine the silica, and control the glossiness of the one-liquid polyurethane conductive coating to be moderate. Further, steel balls are used to mill each raw material under high-speed stirring or shaking. Of course, it can be understood that other suitable ball abrasives can also be used for ball millin...

Embodiment 1

[0040] A kind of preparation method of conductive coating film:

[0041] Get 96.4 parts of blocked isocyanate prepolymers, 3.6 parts of 1,4-butanediol, 2 parts of carbon black powder, 1 part of tributylmethylamine bis(trifluoromethanesulfonyl)imide and 3 parts of silica powder ( The average particle diameter is 4.2 μm), and it was prepared as a raw material mixture of 1000 g. Wherein, the blocked isocyanate prepolymer is a reactant obtained by reacting hexamethylene diisocyanate trimer and siloxane-modified polyether polyol through methyl ethyl ketone oxime blocking.

[0042] Put the above 1000g raw material mixture into a 3L sealed bottle, then add 2600g steel balls, the average thickness of the steel balls is 5mm, and then ball mill the raw materials containing the steel balls for 1 hour under high-speed shaking and stirring. Among them, the speed of the high-speed oscillating mixer is set to 60rpm / min, and then the raw materials are separated from the steel balls to obtain...

Embodiment 2

[0044] A kind of preparation method of conductive coating film:

[0045] Take 96.4 parts of blocked isocyanate prepolymer, 3.6 parts of 1,4-butanediol, 2.5 parts of carbon black powder, 0.5 part of tributylmethylamine bis(trifluoromethanesulfonyl)imide and 3 parts of silica powder, Prepare 1000 g of raw material mixture. Wherein, the blocked isocyanate prepolymer is a reactant obtained by reacting hexamethylene diisocyanate and acrylic polyol.

[0046] Put the above 1000g raw material mixture into a 3L sealed bottle, then add 2000g steel balls, the average thickness of the steel balls is 5mm, and then ball mill the raw materials containing the steel balls for 4h under high-speed vibratory stirring. Among them, the speed of the high-speed oscillating mixer is set to 60rpm / min, and then the raw materials are separated from the steel balls to obtain a prepared single-liquid polyurethane conductive coating, and then the single-liquid polyurethane conductive coating is coated on t...

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Abstract

The invention relates to a single-liquid polyurethane conductive coating and a preparation method thereof. Wherein, the single-liquid type polyurethane conductive coating includes the following raw materials: blocked isocyanate prepolymer, small molecular polyol and conductive agent, and the conductive agent includes carbon black and tributylmethylamine bis(trifluoromethanesulfonyl)imide, The mass ratio of the carbon black to the tributylmethylamine bis(trifluoromethanesulfonyl)imide is (7:13)-(99:1). In this one-component polyurethane conductive coating, the conductive agent includes carbon black and tributylmethylamine bis(trifluoromethanesulfonyl)imide, and carbon black and tributylmethylamine bis(trifluoromethanesulfonyl)imide The mass ratio is reasonable, so that the conductive effect of the single-liquid polyurethane conductive coating is improved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a single-liquid polyurethane conductive coating and a preparation method thereof. Background technique [0002] Polyurethane conductive coatings are widely used due to the advantages of low raw material cost, polymerization under normal pressure, and high bonding strength. They are often made into electrodes, printed circuit boards, packaging materials for electronic instruments, rollers for printers, etc. conductive coating. However, traditional polyurethane conductive coatings often add siloxane or low-molecular surfactants as conductive components. These materials are coated on the surface of the substrate, and low-molecular substances are prone to precipitate after film formation, which will cause traditional polyurethane The conductive effect of the conductive coating is poor and the long-term conductivity is not good, especially the precipitation phenomenon is more serious under lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/08C09D5/24
CPCC08K2201/001C09D5/24C09D175/04C09D175/08C08K3/04C08K5/435
Inventor 杨华吴桐李成河大森直之
Owner SUZHOU CHUANGYISHENG IND CO LTD
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