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A kind of isolation medium slurry and preparation method thereof

A technology of isolating medium and slurry, applied in electrical components, insulators, circuits, etc., can solve the problems that the isolating medium slurry cannot meet the requirements, the adhesion of the isolating medium slurry is low, and the performance of the slurry is difficult to be improved, etc. The effect of improving the characteristics of easy agglomeration, reducing the hygroscopicity and improving the stability

Active Publication Date: 2022-03-08
西安宏星电子浆料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to related problems such as easy hydrolysis and agglomeration of glass powder, good hygroscopicity, and easy crystallization, the adhesion (pull force) of the isolation medium slurry is low and the stability is poor, making it difficult to improve the performance of the slurry and cannot meet the requirements. Higher usage requirements
For example, the customer requires the paste printed on the alumina substrate to be sintered repeatedly 30 times in a sintering furnace at 850 degrees Celsius, and the sintered film has no abnormal phenomenon, and the existing isolation dielectric paste cannot meet this requirement

Method used

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  • A kind of isolation medium slurry and preparation method thereof

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preparation example Construction

[0060] The preparation method of the isolation medium slurry according to the present invention is characterized in that it comprises:

[0061] The glass powder is soaked in sodium dodecylsulfonate solution for 20 to 24 hours, sieved and dried to obtain modified glass powder; the modified glass powder, the first carrier, the second The carrier, the cobalt oxide and the antioxidant are mixed, and after the mixing, rolling is carried out to obtain the isolation medium slurry.

[0062] The preparation method of the Ba-Si-Ca-P system glass powder is: mix barium oxide, calcium oxide, nano-silicon oxide, zinc oxide, and phosphorus pentoxide, and undergo smelting, quenching, ball milling, and drying to finally obtain a particle size D (0.5) Ba-Si-Ca-P system glass powder less than 1.0 μm.

[0063] The preparation method of the first carrier is as follows: after heating butyraldehyde oxime to 70 degrees Celsius, add attapulgite, lecithin, polyvinyl alcohol and ethyl cellulose, perfor...

Embodiment 1

[0065] Modified glass powder preparation method: according to the mass percentage of Ba-Si-Ca-P system glass powder, the composition is barium oxide 13%, calcium oxide 16%, nano-silicon oxide 35%, zinc oxide 32%, phosphorus pentoxide 4% The batching is 1 kg in total, the temperature is raised to 1400 degrees Celsius in a high-temperature resistance furnace for smelting, the holding time is 30 minutes, and the 5-liter corundum ball mill is used for refining, followed by drying for 24 hours to obtain Ba-Si with D(0.5)=0.9 μm -Ca-P system glass powder, the prepared Ba-Si-Ca-P system glass powder is soaked in 7% sodium dodecylsulfonate solution, sieved, dried, and the treatment time is 22 hours, marked as 1# glass powder.

[0066]The preparation method of the first carrier: according to the mass percentage of the first carrier, the composition is 72% of butyraldehyde oxime, 15% of ethyl cellulose, 8% of polyvinyl alcohol, 3% of lecithin, and 2% of attapulgite for batching a total ...

Embodiment 2

[0070] Preparation method of modified glass powder: according to the mass percentage of Ba-Si-Ca-P system glass powder, the composition is barium oxide 10%, calcium oxide 18%, nano-silicon oxide 35%, zinc oxide 33%, phosphorus pentoxide 4% The batching is 1 kg in total, and the temperature is raised to 1400 degrees Celsius in a high-temperature resistance furnace for smelting, the holding time is 30 minutes, and the 5-liter corundum ball mill is used for refinement, followed by drying for 24 hours to obtain Ba-Si with D(0.5)=0.8 μm -Ca-P system glass powder, soak the prepared Ba-Si-Ca-P system glass powder with 7% sodium dodecylsulfonate solution, sieve, dry, and process for 24 hours, marked as 2# glass powder.

[0071] The first carrier preparation method: according to the mass percentage of the first carrier, the composition is 80% of butyraldehyde oxime, 10% of ethyl cellulose, 5% of polyvinyl alcohol, 3% of lecithin, and 2% of attapulgite for batching a total of 25 kg; Sp...

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Abstract

The invention provides an isolation medium slurry and a preparation method thereof. In terms of mass percentage, the preparation raw materials include: 50% to 70% of modified glass powder, 20% to 25% of the first carrier, 6% to 10% The second carrier, 1% to 5% of cobalt oxide, 3% to 10% of antioxidant; the modified glass powder is obtained by soaking glass powder in sodium dodecylsulfonate solution. The invention improves the adhesion and stability of the isolation media slurry.

Description

technical field [0001] The invention belongs to the technical field of dielectric slurry, and in particular relates to an isolation dielectric slurry based on Ba-Si-Ca-P system glass frit and a preparation method thereof. Background technique [0002] With the development of science and technology, thick-film hybrid integrated circuits have the characteristics of wide range of component parameters, high precision and stability, great flexibility in circuit design, short development and production cycles, and are suitable for various small-batch production. Supplementation and mutual penetration have become an important part of integrated circuits and are widely used in electronic control equipment systems. Among them, as an important part of the thick film hybrid integrated circuit, the isolation dielectric paste mainly plays the role of protecting the conductor paste, isolating the resistance paste and the conductor paste, and bonding with the components. , the requirement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/00C03C12/00C03C6/04
CPCH01B3/008C03C12/00C03C1/00
Inventor 张豪周碧
Owner 西安宏星电子浆料科技股份有限公司
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