Carbon electronic paste and preparation method thereof

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...

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

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