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Preparation method of low-metal-powder conductive paint

A technology of conductive coatings and metal powders, applied in conductive coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of decreased coating resistivity, high cost, complex production process, etc., and achieve excellent weather resistance and sufficient supply of paint films. , the effect of simple construction process

Inactive Publication Date: 2016-11-23
泉州市合创涂料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of this, Chinese patent publication number is that CN1632001 discloses a kind of conductive shielding paint / paint, and its composition comprises metal powder 25-45wt%, binding agent 5-25wt%, solvent 20-25wt% etc., this paint can reach shielding effect, but the content of metal powder used in it is more, which will reduce the resistivity of the coating, and the cost is also higher, and the manufacturing process is more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment adopts following formula to prepare:

[0029] raw material name Dosage / g Acrylic 11 Copper metal powder with a particle size of 8um 25 Metal Alignment Promoter 4 Titanate coupling agent 1.5 Wetting and dispersing agent BYK-110 1 Anti-settling agent 210P 1 Butanol and ethanol 56.5

[0030] According to the above ratio, first wet the silver metal powder and dissolve it with the acrylic resin, stir it with a disperser at a speed of 900-1100 per minute for 30-50 minutes, and add the conductive coating additive titanate coupling agent, wetting Dispersant BYK-110, anti-sedimentation agent 201p and mixed diluent are added to it and stirred for 10-15 minutes, sieved to remove impurities, and the finished conductive coating is obtained. At this time, the amount of metal powder added is 25% of the total weight of the conductive paint. The resistivity of the film was 0.41 Ωcm.

Embodiment 2

[0032] The present embodiment is prepared according to the following formula:

[0033] raw material name Dosage / g Novolak epoxy resin 12 Copper metal powder with a particle size of 8um 28 Metal alignment accelerator BYK-310 1.5 Titanate coupling agent 1 Wetting and dispersing agent BYK-110 1 Anti-settling agent 210P 1 Butanol and ethanol 55.5

[0034] According to the above proportioning, the specific implementation of the preparation method is the same as in Example 1. After stirring and dispersing, the finished conductive paint is prepared. At this time, the amount of metal powder added is 28% of the total amount of the conductive paint. At this time, the resistivity of the paint film is 0.24Ωcm .

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PUM

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Abstract

The invention relates to a preparation method of low-metal-powder conductive paint. The paint is prepared from, by weight, 30-55% of film forming matter, 1-10% of conductive paint additive and 40-69% of diluent mixture, wherein the film forming matter comprises metal powder which accounts for 15-30% by weight of the conductive paint, and the conductive paint additive includes a coupling agent which accounts for 1-5% by weight of the paint. The invention further provides the preparation method of the paint. The method includes the steps of wetting silver and copper metal powder, adding the metal powder to resin, sufficiently stirring the materials through a dispersing machine, adding the conductive coating additive and the diluent mixture to the materials to be stirred, and conducting screening to remove impurities to obtain the finished product, namely the conductive paint. By adding a small amount of metal powder, the conductivity of a coating is adjusted, and the conductive paint reaches the optimal effect, has acid and alkali resistance and temperature change resistance, and is excellent in gravity impact resistance, bright in color and luster, high in coating flatness, excellent in weather resistance and simple in preparation process.

Description

technical field [0001] The invention relates to the field of new materials, in particular, it provides a preparation method of low-metal powder conductive paint. Background technique [0002] With the rapid development of electronic technology, electronic circuits and electronic components have reached the level of high integration, functionalization, digitization and high frequency. Because of this, electromagnetic interference is becoming more and more serious. Use materials that can eliminate or weaken electromagnetic interference to effectively reduce the harm caused by electromagnetic interference. [0003] Mobile phones can be said to be the most widely used and largest electronic product in the world today, and the volume requirements of mobile phones are getting smaller and smaller, and the weight is getting lighter and lighter. In such a small space, various information technologies must be added, including Digital, RF, analog, high power, etc., in order to make va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/00C09D167/08C09D5/24C09D7/12
Inventor 陈登龙
Owner 泉州市合创涂料科技有限公司