Carbon electronic paste and preparation method thereof

A technology of electronic paste and carbon electronics, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. Function deterioration and other problems, to achieve the effect of improving competitiveness, low cost and prolonging life

Inactive Publication Date: 2018-02-16
武汉配斯特科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional electronic paste usually needs to add more than 50% lead to reduce the sintering temperature of electronic paste, but due to the high lead content, lead-containing glass powder will cause serious pollution to the environment during the production of electronic paste. This will further affect human health and violate the concept of harmonious coexistence between man and nature. Therefore, the development of lead-free electronic paste is an important and urgent issue to be solved.
[0004] In addition, due to cost considerations, base metal paste can be used instead of precious metal paste in the production process of electronic paste. Although there are great advantages in cost and other aspects, since base metal is easily oxidized at high temperature, it is easy to Lead to the deterioration of the functional phase of the electronic paste, which seriously affects the performance of its electronic paste

Method used

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  • Carbon electronic paste and preparation method thereof
  • Carbon electronic paste and preparation method thereof
  • Carbon electronic paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 2g graphite sheet, 2g graphite powder and 1g carbon black as conductive phase, 0.5g ZrO 2 As the binding phase, 16g of turpentine peroxide is used as an organic vehicle, and 1g of ethyl cellulose is used as a thickener.

[0041] according to figure 2 The process of preparing carbon electronic paste, the specific steps are as follows:

[0042] 1) Pre-mixing: Add the conductive phase, binder phase and organic vehicle to absolute ethanol for pre-mixing, add a thickener during the pre-mixing process, then perform mechanical stirring for 10 minutes, and put it into a sonicator Perform ultrasonic crushing for 10 minutes, then repeat the above-mentioned mechanical stirring and ultrasonic crushing once;

[0043] 2) Ball mill mixing: transfer the pre-mixed slurry into the ball mill tank to 70% of the volume of the ball mill tank, then move the ball mill tank to the ball mill and perform ball milling at a speed of 275 rpm for 10 hours. Then continue ball milling, if not...

Embodiment 2

[0048] Take by weighing 1.3g graphite powder, 3g graphite sheet and 0.7g carbon black as conductive phase, 0.4g ZrO 2 As the binding phase, 13g of turpentine peroxide is used as an organic vehicle, and 1g of ethyl cellulose is used as a thickener.

[0049] according to figure 2 The process of preparing carbon electronic paste, the specific steps are as follows:

[0050] 1) Pre-mixing: Add the conductive phase, binder phase and organic vehicle to absolute ethanol for pre-mixing, add a thickener during the pre-mixing process, then perform mechanical stirring for 5 minutes, and put it into a sonicator Perform ultrasonic crushing for 5 minutes, then repeat the above-mentioned mechanical stirring and ultrasonic crushing twice;

[0051] 2) Ball mill mixing: transfer the pre-mixed slurry into a ball mill tank to 60% of the volume of the ball mill tank, then move the ball mill tank to a ball mill and perform ball milling at a speed of 375 rpm for 6 hours. Then continue ball milling,...

Embodiment 3

[0055] Take by weighing 3.7g graphite powder and 1.3g carbon black as conductive phase, 0.6g ZrO 2 As the binding phase, 19g of turpentine peroxide is used as an organic vehicle, 1g of ethyl cellulose is used as a thickener, and 0.5g of methyl silicate is used as a defoamer.

[0056] according to figure 2 The process of preparing carbon electronic paste, the specific steps are as follows:

[0057] 1) Pre-mixing: Add conductive phase, binder phase and organic vehicle to absolute ethanol for pre-mixing, add thickener and defoamer during pre-mixing, then perform mechanical stirring for 7 minutes, and place Ultrasonic crushing was carried out in the ultrasonic breaker for 8 minutes, and then the above-mentioned mechanical stirring and ultrasonic crushing were repeated three times;

[0058] 2) Ball mill mixing: transfer the pre-mixed slurry into a ball mill tank to 80% of the volume of the ball mill tank, then move the ball mill tank to a ball mill and perform ball milling at a ...

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Abstract

The invention discloses a carbon electronic paste. The carbon electronic paste comprises the following components in parts by weight: 30-90 parts of a conductive phase, 0-20 parts of a binding phase,100-190 parts of an organic carrier, 0-16 parts of a thickening agent and 0-10 parts of a defoaming agent. The invention further provides a preparation method of the carbon electronic paste. The preparation method comprises the following steps of adding the conductive phase, the binding phase and the organic carrier into a solvent for pre-mixing the conductive phase, the binding phase and the organic carrier, adding the thickening agent and the defoaming agent during the pre-mixing process, carrying out mechanical stirring and ultrasonic crushing, transferring materials into a ball milling instrument to conduct the ball milling treatment on the materials, taking out the materials, rapidly evaporating the solvent by using a rotary evaporator, adding the materials into a bottle and obtainingthe carbon electronic paste. Compared with a metal electronic paste in the prior art, the above carbon electronic paste is high in performance, low in cost and lead-free, and the idea of protecting the environment is met. The competitive capacity of carbon electronic paste products is greatly improved. The carbon electronic paste prepared by the preparation method disclosed in the invention can be used subsequently by adopting the simple silk-screen printing or the blade scraping method. Meanwhile, the preparation method is convenient and simple.

Description

technical field [0001] The invention relates to the technical field of electronic materials, and more specifically relates to a carbon electronic paste and a preparation method thereof. Background technique [0002] Electronic paste can be used in photovoltaic electrodes, photocatalysis, capacitors and other fields. It has been developed since the 1960s. Due to its environmental protection, high efficiency and energy saving advantages, it has great application potential in the market. [0003] Traditional electronic paste usually needs to add more than 50% lead to reduce the sintering temperature of electronic paste, but due to the high lead content, lead-containing glass powder will cause serious pollution to the environment during the production of electronic paste. This further affects human health and violates the concept of harmonious coexistence between man and nature. Therefore, the development of lead-free electronic paste is an important issue that needs to be solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/24H01B13/00
CPCH01B1/24H01B13/00
Inventor 王鸣魁宋金魁陶磊明李浩刘双双申燕
Owner 武汉配斯特科技有限公司
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