Conductive ink and application thereof

A conductive ink, selected technology, applied in the direction of ink, applications, household appliances, etc., can solve the problems of unsatisfactory electrical conductivity, overheating of electric heating film, high material cost, etc., and achieve the effect of reducing the risk of overheating and good fluidity

Inactive Publication Date: 2015-03-25
SHANGHAI YOTTECH CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion of the above-mentioned nanoscale powder materials and carbon nanotubes and carbon fiber materials in conductive coatings is a big problem. Even if they are uniformly dispersed in the coating, they cannot maintain the uniform dispersion state in the coating after printing and drying, which is very difficult. It is easy to cause problems such as local overheating and unsatisfactory electrical conductivity of the electric heating film during use, and the material cost is high, so it is not suitable for popularization and application

Method used

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  • Conductive ink and application thereof
  • Conductive ink and application thereof
  • Conductive ink and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Prepare conductive ink of the present invention according to the following steps:

[0027] 1. First, add 50kg of solvent into a 150L stainless steel cylinder, including 30kg of 100# aromatic hydrocarbon solvent and 20kg of ethylene glycol butyl ether, heat to 50°C, and stir for 10 minutes with a disperser. The solution is clear, transparent or light yellow;

[0028] 2. Add 6kg of semi-crystalline polymer ethylene-vinyl acetate copolymer (model Elvax-420, melt index 150, melting point 73°C, provided by DuPont) into the tank, and keep stirring for about 30 minutes until the resin is completely dissolved;

[0029] 3. Add 14kg of amorphous polymer thermoplastic acrylic acid (model B-735, provided by DSM Likang Group Co., Ltd.) to the tank, and keep stirring for about 30 minutes until the resin is completely dissolved;

[0030] 4. Add dispersant (model Disperbyk163, 5.8kg and Disperbyk2001, 4.0kg), defoamer (model Disperbyk057, 0.30kg) and leveling agent (model Disperbyk410,...

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Abstract

The invention provides improved conductive ink, and particularly relates to liquid ink containing a carrier solvent, a conductive additive which is dispersed in the solvent, an amorphous polymer, a half-crystallization polymer and other additives. The liquid ink is applicable to intaglio printing and silk-screen printing. The conductive ink also has resistance positive temperature coefficient of more than 5000ppm / DEG C. The conductive ink can be in jelly-like form after being stored at relatively low temperature or for a long time, after being heated, stirred or vibrated, the ink still has good mobility, the heating power of a low-temperature radiation electric heating film prepared by utilizing the ink can be automatically reduced under the condition of poor heat radiating property, and the overheat risk of the electric heating film can be reduced.

Description

technical field [0001] The invention relates to a conductive ink, in particular to a heat-generating coating applied in gravure printing, screen printing or low-temperature radiation electric heating film. Background technique [0002] Low-temperature radiation electrothermal film heating is a new type of heating method. It converts electric energy into heat energy through electrothermal film. It has the characteristics of energy saving and economy. It has been recognized and widely used by people. Patent CN1255037A discloses a low-temperature radiation electrothermal film, which includes an insulating part, an electrothermal layer, and a current-carrying bar. The structure of the electrothermal layer is composed of parallel conductive strips. The conductive ink that forms the electrothermal coating is the key technology of the electrothermal film product. [0003] The low-temperature radiation electrothermal film widely used at present uses conductive carbon paste as a hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/106C09D11/107
CPCC09D11/52
Inventor 史宇正薛敏钊
Owner SHANGHAI YOTTECH CHEM CO LTD
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