CN112951482B - Electronic component slurry and processing technology - Google Patents

Electronic component slurry and processing technology Download PDF

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Publication number
CN112951482B
CN112951482B CN202110216113.5A CN202110216113A CN112951482B CN 112951482 B CN112951482 B CN 112951482B CN 202110216113 A CN202110216113 A CN 202110216113A CN 112951482 B CN112951482 B CN 112951482B
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parts
mixture
electronic component
paste
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CN112951482A (en
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张洪旺
裘慧广
崔永郁
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Wuxi Dike Electronic Mat Co ltd
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Wuxi Dike Electronic Mat Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20Conductive material dispersed in non-conductive organic material
    • H01B1/22Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention belongs to the field of electronic paste, in particular to electronic component paste and a processing technology thereof, and provides the following scheme aiming at the problems of poor oxidation resistance and poor thermal stability of the existing conductive paste, wherein the electronic component paste comprises the following raw materials in parts by weight: 10-15 parts of silver powder, 5-10 parts of adhesive, 1-5 parts of glass powder, 1-5 parts of epoxy resin, 2-7 parts of thiodipropionic acid, 1-5 parts of tert-butyl hydroquinone, 3-8 parts of dibutyltin dilaurate, 1-3 parts of calcium phosphite and 5-10 parts of zinc carbonate, and the processing technology comprises the following steps: s1: mixing silver powder, adhesive, glass powder and epoxy resin to prepare a mixture A; s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate to obtain a mixture B; the invention has excellent oxidation resistance and thermal stability, and the preparation method is simple.

Description

Electronic component slurry and processing technology
Technical Field
The invention relates to the field of electronic paste, in particular to electronic component paste and a processing technology.
Background
The conductive paste is also called conductive adhesive, and is a mixture of noble metal powder, base metal powder, glass powder and synthetic resin. Wherein the solvent is added to make the material or graphite-like material. The metal powder has a particle size of about 1 to 2 μm, and a slurry of ultrafine powder having a particle size of several tens of nm is being developed. Practical materials comprise Ag (30% -85% of Ag, the balance being epoxy resin and glass powder), Au (60% -85% of Au, the balance being epoxy resin and glass powder), Au-Pd (50% -70% of Au, 10% -20% of Pd, the balance being epoxy resin and glass powder), Cu (70% -80% of Cu, the balance being epoxy resin and glass powder), Ni (80% -90% of Ni, the balance being epoxy resin and glass powder) and the like. The paste is coated on the required part of the substrate by screen printing or other methods, and then the electric conductor is sintered at the temperature of 400-1000 ℃. The method is mainly used for wiring of thick film integrated circuits, electrodes of ceramic capacitors and the like, and leads of hybrid integrated circuits.
The existing conductive paste has poor oxidation resistance and thermal stability, so that an electronic component paste and a processing technology are provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects of poor oxidation resistance and thermal stability of conductive paste in the prior art, and provides electronic component paste and a processing technology thereof.
The invention provides electronic component slurry which comprises the following raw materials in parts by weight: 10-15 parts of silver powder, 5-10 parts of adhesive, 1-5 parts of glass powder, 1-5 parts of epoxy resin, 2-7 parts of thiodipropionic acid, 1-5 parts of tert-butyl hydroquinone, 3-8 parts of dibutyltin dilaurate, 1-3 parts of calcium phosphite, 5-10 parts of zinc carbonate, 3-9 parts of dibasic lead phthalate and 1-5 parts of calcium stearate.
Preferably, the feed comprises the following raw materials in parts by weight: 11-14 parts of silver powder, 6-9 parts of adhesive, 2-4 parts of glass powder, 2-4 parts of epoxy resin, 3-6 parts of thiodipropionic acid, 2-4 parts of tert-butyl hydroquinone, 4-7 parts of dibutyltin dilaurate, 1.5-2.5 parts of calcium phosphite, 6-9 parts of zinc carbonate, 4-8 parts of dibasic lead phthalate and 2-4 parts of calcium stearate.
Preferably, the feed comprises the following raw materials in parts by weight: 12 parts of silver powder, 7 parts of adhesive, 3 parts of glass powder, 3 parts of epoxy resin, 4 parts of thiodipropionic acid, 3 parts of tert-butyl hydroquinone, 5 parts of dibutyltin dilaurate, 2 parts of calcium phosphite, 7 parts of zinc carbonate, 5 parts of dibasic lead phthalate and 3 parts of calcium stearate.
The invention also provides a processing technology of the electronic component slurry, which comprises the following steps:
s1: mixing silver powder, adhesive, glass powder and epoxy resin to prepare a mixture A;
s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate to obtain a mixture B;
s3: mixing the mixture A with the mixture B to obtain a mixture C;
s4: and grinding and dispersing the mixture C by a three-roll mill, grinding into homogeneous slurry, and finally filtering to obtain the electronic component slurry.
Preferably, in S1, the silver powder, the adhesive, the glass powder and the epoxy resin are mixed for 20-40min at a mixing speed of 600-700 r/min.
Preferably, in S2, thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate are mixed for 30-45min at a mixing speed of 500-550 r/min.
Preferably, in S3, the mixture A and the mixture B are mixed for 30-60min at a mixing speed of 650-750 r/min.
Preferably, in S4, the mixture C is ground and dispersed by a three-roll mill, ground into a homogeneous slurry, and finally filtered through a 500-mesh screen to obtain the electronic component slurry.
Tert-butylhydroquinone, also known as tert-butylhydroquinone, abbreviated as TBHQ, has a molecular formula of C10H14O2 and a relative molecular mass of 166.22. The tert-butyl hydroquinone is white powdery crystal and has special smell, the melting point is 126.5-128.5, and the boiling point is 300 ℃. Is easily soluble in ethanol and ether, soluble in oil and insoluble in water. The product is stable to heat, does not form colored substances when meeting iron and copper ions, but can be pink under the condition of visible light or alkalinity, and the tert-butyl hydroquinone has stronger oxidation resistance;
dibutyltin dilaurate is an organic tin additive, can be dissolved in organic solvents such as benzene, toluene, carbon tetrachloride, ethyl acetate, chloroform, acetone, petroleum ether and the like and all industrial plasticizers, and is insoluble in water. The multipurpose high boiling point organotin catalyst dibutyltin dilaurate in the market is usually liquefied specially, is light yellow or colorless oily liquid at normal temperature, is white crystal at low temperature, can be used for polyvinyl chloride plastic additives, and has excellent lubricating property, transparency and weather resistance. The sulfide pollution resistance is better. The product can be used as a stabilizer in a soft transparent product, as an efficient lubricant in a hard transparent product, as a catalyst for the cross-linking reaction of acrylate rubber and carboxyl rubber, the synthesis of polyurethane foam and the synthesis of polyester, and as a catalyst for room-temperature vulcanized silicone rubber, and has excellent light stability and transparency;
the invention has the beneficial effects that:
the antioxidant performance can be improved by matching the thiodipropionic acid and the tert-butyl hydroquinone;
the thermal stability can be improved by matching dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate;
the invention has excellent oxidation resistance and thermal stability, and the preparation method is simple.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides electronic component slurry which comprises the following raw materials in parts by weight: 10 parts of silver powder, 5 parts of adhesive, 1 part of glass powder, 1 part of epoxy resin, 2 parts of thiodipropionic acid, 1 part of tert-butyl hydroquinone, 3 parts of dibutyltin dilaurate, 1 part of calcium phosphite, 5 parts of zinc carbonate, 3 parts of dibasic lead phthalate and 1 part of calcium stearate;
the preparation method comprises the following steps:
s1: mixing silver powder, adhesive, glass powder and epoxy resin for 20min at a mixing speed of 600r/min to obtain a mixture A;
s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate for 30min at a mixing speed of 500r/min to obtain a mixture B;
s3: mixing the mixture A and the mixture B for 30min at a mixing speed of 650r/min to obtain a mixture C;
s4: grinding and dispersing the mixture C by a three-roll mill, grinding into homogeneous slurry, and finally filtering by a 500-mesh screen to obtain the electronic component slurry.
Example two
The invention provides electronic component slurry which comprises the following raw materials in parts by weight: 12 parts of silver powder, 7 parts of adhesive, 3 parts of glass powder, 3 parts of epoxy resin, 5 parts of thiodipropionic acid, 3 parts of tert-butyl hydroquinone, 5 parts of dibutyltin dilaurate, 2 parts of calcium phosphite, 7 parts of zinc carbonate, 5 parts of dibasic lead phthalate and 3 parts of calcium stearate;
the preparation method comprises the following steps:
s1: mixing silver powder, adhesive, glass powder and epoxy resin for 30min at a mixing speed of 650r/min to obtain a mixture A;
s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate for 35min at a mixing speed of 520r/min to obtain a mixture B;
s3: mixing the mixture A and the mixture B for 45min at the mixing speed of 700r/min to obtain a mixture C;
s4: grinding and dispersing the mixture C by a three-roll mill, grinding into homogeneous slurry, and finally filtering by a 500-mesh screen to obtain the electronic component slurry.
EXAMPLE III
The invention provides electronic component slurry which comprises the following raw materials in parts by weight: 15 parts of silver powder, 10 parts of adhesive, 5 parts of glass powder, 5 parts of epoxy resin, 7 parts of thiodipropionic acid, 5 parts of tert-butyl hydroquinone, 8 parts of dibutyltin dilaurate, 3 parts of calcium phosphite, 10 parts of zinc carbonate, 9 parts of dibasic lead phthalate and 5 parts of calcium stearate;
the preparation method comprises the following steps:
s1: mixing silver powder, adhesive, glass powder and epoxy resin for 40min at the mixing speed of 700r/min to obtain a mixture A;
s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate for 45min at a mixing speed of 550r/min to obtain a mixture B;
s3: mixing the mixture A and the mixture B for 60min at a mixing speed of 750r/min to obtain a mixture C;
s4: grinding and dispersing the mixture C by a three-roll mill, grinding into homogeneous slurry, and finally filtering by a 500-mesh screen to obtain the electronic component slurry.
For the electronic component pastes prepared in the first to third examples, compared with the conventional electronic component paste, the experimental data are shown in the following table:
Figure 217282DEST_PATH_IMAGE002
from the above table, it can be seen that the electronic component paste provided by the present invention has significantly improved oxidation resistance and thermal stability, and the second embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (6)

1. The electronic component slurry is characterized by comprising the following raw materials in parts by weight: 10-15 parts of silver powder, 5-10 parts of adhesive, 1-5 parts of glass powder, 1-5 parts of epoxy resin, 2-7 parts of thiodipropionic acid, 1-5 parts of tert-butyl hydroquinone, 3-8 parts of dibutyltin dilaurate, 1-3 parts of calcium phosphite, 5-10 parts of zinc carbonate, 3-9 parts of dibasic lead phthalate and 1-5 parts of calcium stearate.
2. The electronic component paste as claimed in claim 1, comprising the following raw materials in parts by weight: 11-14 parts of silver powder, 6-9 parts of adhesive, 2-4 parts of glass powder, 2-4 parts of epoxy resin, 3-6 parts of thiodipropionic acid, 2-4 parts of tert-butyl hydroquinone, 4-7 parts of dibutyltin dilaurate, 1.5-2.5 parts of calcium phosphite, 6-9 parts of zinc carbonate, 4-8 parts of dibasic lead phthalate and 2-4 parts of calcium stearate.
3. The electronic component paste as claimed in claim 1, comprising the following raw materials in parts by weight: 12 parts of silver powder, 7 parts of adhesive, 3 parts of glass powder, 3 parts of epoxy resin, 4 parts of thiodipropionic acid, 3 parts of tert-butyl hydroquinone, 5 parts of dibutyltin dilaurate, 2 parts of calcium phosphite, 7 parts of zinc carbonate, 5 parts of dibasic lead phthalate and 3 parts of calcium stearate.
4. A processing technology of electronic component slurry, wherein the electronic component slurry is the electronic component slurry as claimed in any one of claims 1 to 3, and the processing technology comprises the following steps:
s1: mixing silver powder, adhesive, glass powder and epoxy resin for 20-40min at a mixing speed of 600-;
s2: mixing thiodipropionic acid, tert-butyl hydroquinone, dibutyltin dilaurate, calcium phosphite, zinc carbonate, dibasic lead phthalate and calcium stearate for 30-45min at the mixing speed of 500-550r/min to obtain a mixture B;
s3: mixing the mixture A with the mixture B to obtain a mixture C;
s4: and grinding and dispersing the mixture C by a three-roll mill, grinding into homogeneous slurry, and finally filtering to obtain the electronic component slurry.
5. The processing technology of electronic component paste according to claim 4, wherein in S3, the mixture A and the mixture B are mixed for 30-60min at a mixing speed of 650-750 r/min.
6. The process for processing the paste for electronic components according to claim 4, wherein in the step S4, the mixture C is ground and dispersed by a three-high mill, ground into homogeneous paste, and finally filtered by a 500-mesh screen to obtain the paste for electronic components.
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Address after: No. 8 Yongsheng Road, Qiting Street, Yixing City, Wuxi City, Jiangsu Province, 214203

Patentee after: WUXI DIKE ELECTRONIC MAT Co.,Ltd.

Country or region after: China

Address before: 214203 building B2, phase II, Pioneer Park, 11 Yongning Road, Qiting street, Yixing City, Wuxi City, Jiangsu Province

Patentee before: WUXI DIKE ELECTRONIC MAT Co.,Ltd.

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