CN110322983A - A kind of slug type electronic conduction gold paste and preparation method thereof - Google Patents
A kind of slug type electronic conduction gold paste and preparation method thereof Download PDFInfo
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- CN110322983A CN110322983A CN201910513914.0A CN201910513914A CN110322983A CN 110322983 A CN110322983 A CN 110322983A CN 201910513914 A CN201910513914 A CN 201910513914A CN 110322983 A CN110322983 A CN 110322983A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/16—Conductive material dispersed in non-conductive inorganic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
Abstract
Present invention relates particularly to a kind of slug type electronic conduction gold paste and preparation method thereof, which includes following parts by weight component: the bronze of 70%-80%, the glass powder of 5%-10%, the organic carrier of 10%-20% and the auxiliary agent of 0.5%-3%.Proportionally raw material is uniformly mixed, grinding, filtering, obtain the slug type electronic conduction gold paste, the co-fire match of the slug type electronic conduction gold paste and ceramic base material is good, after sintering film forming, film layer sheet resistance≤5m Ω/, film layer compactness is high, smooth surface, peel adhesion >=50N/ (2*2) mm2Without harmful elements such as lead, cadmiums, it is environmentally protective, and preparation process is simple, it is easy to industrialize, can be widely applied to thick film hybrid integrated circuit (HIC), large scale integrated circuit (LSI), ceramic encapsulated ic (IC), thermistor, semiconductor packages, multilayer wiring circuit and hydrid integrated circuit etc..
Description
Technical field
The present invention relates to a kind of conductive gold paste and preparation method thereof, in particular to a kind of slug type electronic conduction gold paste and its
Preparation method.
Background technique
Electrocondution slurry can be generally divided into two classes, i.e. conducting polymer slurry and slug type electrocondution slurry.Conducting polymer
Slurry is dried or cured film forming, using organic polymer as Binder Phase.The sintering temperature of slug type electrocondution slurry is typically larger than
500 DEG C, using glass powder or oxide as Binder Phase.Slug type gold paste is because of its excellent electric conductivity, solderability, thermal compression welding
And corrosion resistance, it is widely used in the electrotechnical elements such as the electronic components such as capacitor, potentiometer and high pressure, high frequency porcelain piece
Manufacture, is to integrate chemical industry, metallurgy, the function of electronics, structural material, is concerned in electric slurry industry.With electricity
The rapid development of sub- industry, higher and higher to electronic component quality requirements, current conductive gold paste printing is poor, sintering activity
Height be easy to cause film layer explosion to lead to sintered membrane out-of-flatness, discontinuous, and compactness is poor, influences the electrical property of conductive gold paste；Together
When existing conductive gold paste with the harmful elements such as lead, cadmium are usually contained, be not suitable for the development of current green manufacturing.
Therefore, it is necessary to provide, a kind of environmental protection, co-fire match are good, and post-shrinkage ratio is low for film forming, high electrical performance, high removing are attached
Put forth effort, the slug type electronic conduction gold paste of high compactness.
Summary of the invention
Based on the above issues, the purpose of the present invention is to provide a kind of slug type electronic conduction gold paste and preparation method thereof,
The co-fire match of the gold paste and ceramic base material is good, and after sintering film forming, film layer sheet resistance≤5m Ω/, film layer compactness is high, surface
It is flat and smooth, peel adhesion >=50N/ (2*2) mm2, it is environmentally protective without harmful elements such as lead, cadmiums, and preparation process letter
It is single, it is easy to industrialize, can be widely applied to thick film hybrid integrated circuit (HIC), large scale integrated circuit (LSI), ceramic package
Integrated circuit (IC), thermistor, semiconductor packages, multilayer wiring circuit and hydrid integrated circuit etc..
To achieve the goals above, technical scheme is as follows:
A kind of slug type electronic conduction gold paste, by weight percentage, including following components: the bronze of 70%-80%,
The auxiliary agent of the glass powder of 5%-10%, the organic carrier of 10%-20% and 0.5%-3%.
Further, the bronze is made of dendroid and spherical/regular hexagon/column/flitter, dendroid bronze
Account for the 50-60wt% of bronze total amount, tap density 6-8g/cm3, average grain diameter 0.3-1um, specific surface area 0.7-2m2/
g。
Preferably, the preparation method of the bronze, includes the following steps:
(1) dispersing agent is added in chlorauric acid solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into golden liquid A,
In, the quality of dispersing agent is the 1-5% of gold chloride quality；
(2) dispersing agent is added in reducing agent solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into reducing solution B,
In, the quality of dispersing agent is the 5-10% of gold chloride quality；
(3) at 70-80 DEG C, reducing solution B is added under stiring in golden liquid A, and liquid control system pH is adjusted by pH
For 3-4, until the reaction is complete；Room temperature standing sedimentation washs, dry, obtains bronze.
Preferably, dispersing agent described in step (1) be Sodium Polyacrylate, oleic acid, in Arabic gum any one or it is more
Kind.
Preferably, chlorauric acid solution described in step (1) is prepared by the following method: gold chloride is dissolved in deionized water
In, it is made into the chlorauric acid solution of 5-20g/L.
Preferably, dispersing agent described in step (2) be Sodium Polyacrylate, oleic acid, in Arabic gum any one or it is more
Kind.
Preferably, reducing agent solution described in step (2) is prepared by the following method: dissolving reduce agent in deionized water
In, it is made into the reducing agent solution of 5-10g/L.
Preferably, the quality of reducing agent described in step (2) is the 30-50% of gold chloride quality.
Preferably, reducing agent described in step (2) is ascorbic acid, sodium citrate, any one or more in oxalic acid.
Preferably, it is hydrochloric acid or sodium hydroxide solution, concentration 0.01-0.05mol/ that PH described in step (3), which adjusts liquid,
L, wherein sodium hydroxide solution is dissolved in deionized water by sodium hydroxide to be made.
Preferably, the adding manner in step (3) is to be added dropwise, drop rate 0.05-2mL/min.
Preferably, described in step (3) washing include the following steps: after powder settle after, incline supernatant liquor, spend from
After sub- water washing to 20 μ s/cm of supernatant conductivity <, then use ethanol washing.
Preferably, drying temperature described in step (3) is 60 DEG C.
Further, the glass powder, by weight percentage, including following components: the B2O3 content of 15%-30%,
The Al2O3 of the SrCaO3 and 15%-30% of Bi2O3,1%-5% of SiO2,25%-40% of 1%-10%.
Preferably, the average grain diameter of the glass powder is 1-3um.
Further, the organic carrier, by weight percentage, including following components: organic tree of 20%-40%
Rouge and 60%-80% organic solvent.
Further, the organic resin be acrylic resin, maleic acid resin, in ethyl cellulose any one or
It is a variety of.
Further, the organic solvent be dibasic ester, diethylene glycol ether acetate, tributyl citrate it is any
It is one or more.
Further, the auxiliary agent is levelling agent, defoaming agent, any one or more in surfactant, levelling agent
Preferably turpentine oil or castor oil, defoaming agent are preferably terpinol or n-hexyl alcohol, and surfactant is preferably titanate ester coupling
Agent.
Further, the sintering temperature of the slug type electronic conduction gold paste is 550-900 DEG C.
The preparation method of above-mentioned slug type electronic conduction gold paste includes the following steps: proportionally to be stirred raw material
Uniformly, it grinds, filtering obtains slug type electronic conduction gold paste.
Preferably, incorporation time 20-60min.
Preferably, Xi Du≤5um, viscosity 50-200kcps are ground to.
Preferably, it is filtered into 300-500 mesh filter screen.
Advantageous effects of the invention:
Slug type conduction gold paste of the invention, with the co-fire match for aoxidizing all kinds of ceramic base materials such as silicon/silicon carbide/silicon nitride
Property it is good, after sintering film forming, film layer sheet resistance≤5m Ω/, film layer compactness is high, smooth surface, peel adhesion is >=
50N/(2*2)mm2, it is environmentally protective without harmful elements such as lead, cadmiums, and preparation process is simple, is easy to industrialize, it can be extensive
Applied to thick film hybrid integrated circuit (HIC), large scale integrated circuit (LSI), ceramic encapsulated ic (IC), temperature-sensitive electricity
Resistance, semiconductor packages, multilayer wiring circuit and hydrid integrated circuit etc..
1. glass powder uses compound borosilicic acid powder, average grain diameter is 1-3 μm, 15-30%B2O3, 1-10%SiO2,
25-40%Bi2O3, 1-5%SrCaO3, 15-30%Al2O3, Bi during the sintering process2O3Promote glass powder and bottom as fluxing agent
The fusion on material surface adheres to, and improves the adhesive force of conductive gold paste；Sr element contacts bronze with the silicon in ground closer simultaneously,
Further increase the adhesive force of bronze lap-joint.
2. bronze is made of dendroid and spherical/regular hexagon/column/flitter, dendroid bronze accounts for bronze total amount
50-60wt%, tap density 6-8g/cm3, average grain diameter 0.3-1um, specific surface area 0.7-2m2/g, bronze it is low
Specific surface area makes that sintering activity is low, densification temperature is high, is conducive to electronic conduction gold paste and forms densification during the sintering process to lead
Electrolemma；The high partial size of bronze makes it have good compatibility with electronic conduction slurry system, so that electronic conduction slurry exists
Be not in the problems such as shrinking percentage is excessive, film layer cracks, film layer compactness is poor after sintering film forming, and maintain the work of bronze
Property.
3. organic carrier maintains printing, the thixotroping of conductive gold paste using no benzene class environment-friendly type organic resin and solvent
Property, the figure moulding formed after screen printing is good, sintering shrinkage matching is good.
Detailed description of the invention
Fig. 1 is the SEM figure of bronze prepared by embodiment one.
Fig. 2 is the SEM figure of bronze prepared by embodiment two.
Fig. 3 is the SEM figure of bronze prepared by embodiment three.
Fig. 4 is the grain size distribution of bronze prepared by embodiment one.
Fig. 5 is the grain size distribution of bronze prepared by embodiment two.
Fig. 6 is the grain size distribution of bronze prepared by embodiment three.
Specific embodiment
Detailed description of the preferred embodiments below, and experimental method used in embodiment is such as
It is conventional method without specified otherwise；Material used in embodiment, reagent etc. unless otherwise specified can be from business ways
Diameter obtains.
A kind of slug type conduction gold paste, by weight percentage, including following components: bronze, the 5%- of 70%-80%
The auxiliary agent of 10% glass powder, the organic carrier of 10%-20% and 0.5%-3%.
Further, the bronze is made of dendroid and spherical/regular hexagon/column/flitter, dendroid bronze
Account for the 50-60wt% of bronze total amount, tap density 6-8g/cm3, average grain diameter 0.3-1um, specific surface area 0.7-2m2/
g。
Preferably, the preparation method of the bronze, includes the following steps:
(1) dispersing agent is added in chlorauric acid solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into golden liquid A,
In, the quality of dispersing agent is the 1-5% of gold chloride quality；
(2) dispersing agent is added in reducing agent solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into reducing solution B,
In, the quality of dispersing agent is the 5-10% of gold chloride quality；
(3) at 70-80 DEG C, reducing solution B is added under stiring in golden liquid A, and liquid control system pH is adjusted by pH
For 3-4, until the reaction is complete；Room temperature standing sedimentation washs, dry, obtains bronze.
Preferably, dispersing agent described in step (1) be Sodium Polyacrylate, oleic acid, in Arabic gum any one or it is more
Kind.
Preferably, chlorauric acid solution described in step (1) is prepared by the following method: gold chloride is dissolved in deionized water
In, it is made into the chlorauric acid solution of 5-20g/L.
Preferably, dispersing agent described in step (2) be Sodium Polyacrylate, oleic acid, in Arabic gum any one or it is more
Kind.
Preferably, reducing agent solution described in step (2) is prepared by the following method: dissolving reduce agent in deionized water
In, it is made into the reducing agent solution of 5-10g/L.
Preferably, the quality of reducing agent described in step (2) is the 30-50% of gold chloride quality.
Preferably, reducing agent described in step (2) is ascorbic acid, sodium citrate, any one or more in oxalic acid.
Preferably, it is hydrochloric acid or sodium hydroxide solution, concentration 0.01-0.05mol/ that PH described in step (3), which adjusts liquid,
L, wherein sodium hydroxide solution is dissolved in deionized water by sodium hydroxide to be made.
Preferably, the adding manner in step (3) is to be added dropwise, drop rate 0.05-2mL/min.
Preferably, described in step (3) washing include the following steps: after powder settle after, incline supernatant liquor, spend from
After sub- water washing to 20 μ s/cm of supernatant conductivity <, then use ethanol washing.
Preferably, drying temperature described in step (3) is 60 DEG C.
Further, the glass powder, by weight percentage, including following components: the B2O3 content of 15%-30%,
The Al2O3 of the SrCaO3 and 15%-30% of Bi2O3,1%-5% of SiO2,25%-40% of 1%-10%, partial size 1-
3um。
Further, the organic carrier, by weight percentage, including following components: organic tree of 20%-40%
Rouge and 60%-80% organic solvent, preparation method, include the following steps: at 65-85 DEG C, and organic resin addition is had
It is dissolved completely in solvent, organic carrier is made.
Further, the organic resin be acrylic resin, maleic acid resin, in ethyl cellulose any one or
It is a variety of.
Further, the organic solvent be dibasic ester, diethylene glycol ether acetate, tributyl citrate it is any
It is one or more.
Further, the auxiliary agent is levelling agent, defoaming agent, any one or more in surfactant, levelling agent
Preferably turpentine oil or castor oil, defoaming agent are preferably terpinol or n-hexyl alcohol, and surfactant is preferably titanate ester coupling
Agent.
The preparation method of above-mentioned slug type conduction gold paste includes the following steps: proportionally to be uniformly mixed raw material,
Grinding, filtering, obtains conductive gold paste.
Preferably, incorporation time 20-60min.
Preferably, Xi Du≤5um, viscosity 50-200kcps are ground to.
Preferably, it is filtered into 300-500 mesh filter screen.
By above-mentioned slug type conduction gold paste, 300-500 mesh screen printing is passed through on silica/silicon nitride/silicon carbide ceramics
Brush after 800-850 DEG C of sintering 10min forms a film, carries out adhesive force, compactness, electric conductivity test.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
A kind of slug type conduction gold paste, by weight percentage, including following components: 70% bronze, 5% glass
Powder, 10% organic carrier and 0.5% auxiliary agent.The preparation method of above-mentioned slug type conduction gold paste, includes the following steps:
According to the above ratio, glass powder is added in organic carrier and is uniformly mixed, auxiliary agent is then added and continues to be uniformly mixed,
It adds bronze to continue to be uniformly mixed, slurry fineness is finally ground on three-roller to 4um, viscosity 50kcps, mistake
Slug type conduction gold paste is made in 300 mesh filter screens.
Further, the bronze purity is 99.95%, 0.3 μm of average grain diameter, specific surface area 1.85m2/g, vibration density
Spend 6.59g/cm3.The preparation method of above-mentioned bronze includes the following steps: gold chloride being dissolved in deionized water, prepares the chlorine of 5g/L
Auric acid solution；Ascorbic acid is dissolved in deionized water, prepares the reducing agent solution of 5g/L；Chlorauric acid solution is measured, chlorine gold is added
Dissolution is sufficiently stirred under 80 DEG C of water-baths in 1% oleic acid of sour quality, is made into golden liquid A；Measure reducing agent solution, the matter of reducing agent
Amount is the 30% of gold chloride quality, and 5% oleic acid of gold chloride quality is added, dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into also
Stoste B；Under 80 DEG C and 100r/min, reducing solution B is added drop-wise in golden liquid A with the drop rate of 1.5mL/min, and is passed through
The hydrochloric acid of 0.05mol/L/sodium hydroxide solution control system pH is 3-4, after being all added dropwise, continues to stir 10min；To
Solution is subjected to the processing of room temperature standing sedimentation after the reaction was completed, after powder sedimentation, incline supernatant liquor, is washed with deionized
It to 20 μ s/cm of supernatant conductivity <, is cleaned 2-3 times, is filtered with ethyl alcohol, and the dry obtained bronze at 60 DEG C.
The glass powder, by weight percentage, including following components: 15% B2O3 content, 1% SiO2,25%
Bi2O3,1% SrCaO3 and 15% Al2O3, partial size 1um.
The organic carrier, by weight percentage, including following components: 20% acrylic resin and 80% 2
Valence acid esters.The preparation method of above-mentioned organic carrier, includes the following steps: according to the above ratio, and divalent acid is added in acrylic resin
It is dissolved by heating at 80 DEG C in ester, organic carrier is made.
The auxiliary agent, by weight percentage, including following components: 30% levelling agent, 30% defoaming agent and
40% surfactant, wherein levelling agent is turpentine oil, and defoaming agent is terpinol, and surfactant is titanate ester coupling
Agent.
By above-mentioned slug type conduction gold paste, on silicon oxide ceramics pass through 300 mesh silk-screen printings, 800 DEG C of sintering 10min at
After film, peel adhesion is 50N/ (2*2) mm2, sheet resistance is 4.8m Ω/, is observed under the microscope, and film layer is fine and close and smooth.
Embodiment 2
A kind of slug type conduction gold paste, by weight percentage, including following components: 80% bronze, 10% glass
Powder, 20% organic carrier and 3% auxiliary agent.The preparation method of above-mentioned slug type conduction gold paste, include the following steps: by
Glass powder is added in organic carrier and is uniformly mixed by aforementioned proportion, and auxiliary agent is then added and continues to be uniformly mixed, then
Bronze is added to continue to be uniformly mixed, slurry fineness is finally ground on three-roller to 5um, viscosity 200kcps, mistake
Slug type conduction gold paste is made in 500 mesh filter screens.
The bronze purity is 99.97%, 0.6 μm of average grain diameter, specific surface area 0.85m2/ g, tap density 7.12g/
cm3.The preparation method of above-mentioned bronze includes the following steps: gold chloride being dissolved in deionized water, and the gold chloride for preparing 20g/L is molten
Liquid；Oxalic acid is dissolved in deionized water, prepares the reducing agent solution of 10g/L；Chlorauric acid solution is measured, gold chloride quality is added
Dissolution is sufficiently stirred under 80 DEG C of water-baths in 5% Sodium Polyacrylate, is made into golden liquid A；Measure reducing agent solution, the quality of reducing agent
It is the 50% of gold chloride quality, 10% Sodium Polyacrylate of gold chloride quality is added, dissolution is sufficiently stirred under 80 DEG C of water-baths, matches
At reducing solution B；Under 80 DEG C and 100r/min, reducing solution B is added drop-wise in golden liquid A with the drop rate of 1.5mL/min, and is led to
Hydrochloric acid/sodium hydroxide solution control system the pH for crossing 0.05mol/L is 3-4, after being all added dropwise, continues to stir 10min；
To which solution is carried out the processing of room temperature standing sedimentation after the reaction was completed, after powder sedimentation, incline supernatant liquor, is washed with deionized water
It washs to 20 μ s/cm of supernatant conductivity <, is cleaned 2-3 times with ethyl alcohol, filtered, and the dry obtained bronze at 60 DEG C.
The glass powder, by weight percentage, including following components: 30% B2O3 content, 10% SiO2,40%
Bi2O3,5% SrCaO3 and 30% Al2O3, partial size 3um.
The organic carrier, by weight percentage, including following components: 40% maleic acid resin and 60%
Diethylene glycol ether acetate.The preparation method of above-mentioned organic carrier includes the following steps: according to the above ratio, by maleic acid tree
Rouge is added in diethylene glycol ether acetate and dissolves by heating at 80 DEG C, and organic carrier is made.
The auxiliary agent, by weight percentage, including following components: 40% levelling agent, 30% defoaming agent and
30% surfactant, wherein levelling agent is castor oil, and defoaming agent is n-hexyl alcohol, and surfactant is titanate ester coupling
Agent.
By above-mentioned slug type conduction gold paste, on silicon nitride ceramics pass through 300 mesh silk-screen printings, 800 DEG C of sintering 10min at
After film, peel adhesion is 55N/ (2*2) mm2, sheet resistance is 4.6m Ω/, is observed under the microscope, and film layer is fine and close and smooth.
Embodiment 3
A kind of slug type conduction gold paste, by weight percentage, including following components: 75% bronze, 8% glass
Powder, 15.5% organic carrier and 1.5% auxiliary agent.The preparation method of above-mentioned slug type conduction gold paste, including walk as follows
It is rapid: according to the above ratio, glass powder to be added in organic carrier and is uniformly mixed, auxiliary agent is then added and continues to be stirred
It is even, it adds bronze and continues to be uniformly mixed, slurry fineness is finally ground on three-roller to 4um, viscosity is
100kcps crosses 400 mesh filter screens, and slug type conduction gold paste is made.
The bronze purity is 99.97%, 0.7 μm of average grain diameter, specific surface area 0.64m2/ g, tap density 7.88g/
cm3.The preparation method of above-mentioned bronze includes the following steps: gold chloride being dissolved in deionized water, and the gold chloride for preparing 10g/L is molten
Liquid；Sodium citrate is dissolved in deionized water, prepares the reducing agent solution of 8g/L；Chlorauric acid solution is measured, gold chloride quality is added
3% Sodium Polyacrylate, dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into golden liquid A；Measure reducing agent solution, the matter of reducing agent
Amount is the 45% of gold chloride quality, and 7% Sodium Polyacrylate of gold chloride quality is added, dissolution is sufficiently stirred under 80 DEG C of water-baths,
It is made into reducing solution B；Under 80 DEG C and 100r/min, reducing solution B is added drop-wise in golden liquid A with the drop rate of 1.5mL/min, and
Hydrochloric acid/sodium hydroxide solution control system pH by 0.05mol/L is that 3-4 continues to stir after being all added dropwise
10min；To after the reaction was completed by solution carry out the processing of room temperature standing sedimentation, after powder sedimentation after, incline supernatant liquor, spend from
It after sub- water washing to 20 μ s/cm of supernatant conductivity <, is cleaned 2-3 times, is filtered with ethyl alcohol, and the dry obtained gold at 60 DEG C
Powder.
The glass powder, by weight percentage, including following components: 20% B2O3 content, 5% SiO2,30%
Bi2O3,3% SrCaO3 and 20% Al2O3, partial size 2um.
The organic carrier, by weight percentage, including following components: 35% ethyl cellulose and 65%
Tributyl citrate.The preparation method of above-mentioned organic carrier includes the following steps: that according to the above ratio, ethyl cellulose is added
It is dissolved by heating at 80 DEG C in tributyl citrate, organic carrier is made.
The auxiliary agent, by weight percentage, including following components: 25% levelling agent, 40% defoaming agent and
35% surfactant, wherein levelling agent is castor oil, and defoaming agent is n-hexyl alcohol, and surfactant is titanate ester coupling
Agent.
By above-mentioned slug type conduction gold paste, on silicon carbide ceramics pass through 300 mesh silk-screen printings, 800 DEG C of sintering 10min at
After film, peel adhesion is 60N/ (2*2) mm2, sheet resistance is 4.2m Ω/, is observed under the microscope, and film layer is fine and close and smooth.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of slug type electronic conduction gold paste, which is characterized in that by weight percentage, including following components: 70%-80%
Bronze, the glass powder of 5%-10%, the organic carrier of 10%-20% and 0.5%-3% auxiliary agent.
2. slug type electronic conduction gold paste according to claim 1, which is characterized in that the bronze is by dendroid and ball
Shape/regular hexagon/column/flitter composition, dendroid bronze account for the 50-60wt% of bronze total amount, tap density 6-8g/
Cm3, average grain diameter 0.3-1um, specific surface area 0.7-2m2/g.
3. slug type electronic conduction gold paste according to claim 2, which is characterized in that the preparation method of the bronze, packet
Include following steps:
(1) dispersing agent is added in chlorauric acid solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into golden liquid A, wherein point
The quality of powder is the 1-5% of gold chloride quality；
(2) dispersing agent is added in reducing agent solution, and dissolution is sufficiently stirred under 80 DEG C of water-baths, is made into reducing solution B, wherein
The quality of dispersing agent is the 5-10% of gold chloride quality；
(3) at 70-80 DEG C, reducing solution B is added under stiring in golden liquid A, and adjusting liquid control system pH by pH is 3-
4, until the reaction is complete；Room temperature standing sedimentation washs, dry, obtains bronze.
4. slug type electronic conduction gold paste according to claim 3, which is characterized in that the concentration of the chlorauric acid solution is
5-20g/L, the concentration of the reducing agent solution are 5-10g/L, and the quality of the reducing agent is the 30-50% of gold chloride quality,
It is the hydrochloric acid or sodium hydroxide solution that concentration is 0.01-0.05mol/L that the PH, which adjusts liquid,.
5. slug type electronic conduction gold paste according to claim 3 or 4, which is characterized in that the reducing agent is Vitamin C
Acid, sodium citrate, any one or more in oxalic acid, the dispersing agent are Sodium Polyacrylate, oleic acid, appointing in Arabic gum
It anticipates one or more.
6. slug type electronic conduction gold paste according to claim 1, which is characterized in that the glass powder, by weight percentage
Than meter, including following components: Bi2O3,1%-5% of the B2O3 content of 15%-30%, SiO2,25%-40% of 1%-10%
SrCaO3 and 15%-30% Al2O3.
7. slug type electronic conduction gold paste according to claim 1, which is characterized in that the organic carrier, by weight hundred
Divide than meter, including following components: the organic resin and 60%-80% organic solvent of 20%-40%, wherein organic tree
Rouge is acrylic resin, maleic acid resin, any one or more in ethyl cellulose, the organic solvent be terpinol,
Any one or more in ethylene glycol ethyl ether, acetate.
8. slug type electronic conduction gold paste according to claim 1, which is characterized in that the auxiliary agent is levelling agent, defoaming
Any one or more in agent, surfactant, the levelling agent is preferably turpentine oil or castor oil, and the defoaming agent is preferred
For terpinol or n-hexyl alcohol, the surfactant is preferably titante coupling agent.
9. slug type electronic conduction gold paste according to claim 1, which is characterized in that the slug type electronic conduction gold paste
Sintering temperature be 550-900 DEG C.
10. the preparation method of slug type electronic conduction gold paste described in -9 any one according to claim 1, which is characterized in that
Include the following steps: proportionally to be uniformly mixed raw material, grind, filtering obtains slug type electronic conduction gold paste.
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| CN201910513914.0A Pending CN110322983A (en) | 2019-06-14 | 2019-06-14 | A kind of slug type electronic conduction gold paste and preparation method thereof |
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| CN112735631A (en) * | 2020-12-21 | 2021-04-30 | 有研工程技术研究院有限公司 | Low-viscosity organic gold paste capable of being sintered on surface of circuit board substrate at low temperature |
| CN113506648A (en) * | 2021-09-10 | 2021-10-15 | 西安宏星电子浆料科技股份有限公司 | Inner-layer gold conductor paste for Ca-B-Si system LTCC |
| CN114464339A (en) * | 2022-02-22 | 2022-05-10 | 昆明贵研新材料科技有限公司 | Conductive gold paste, preparation method thereof and application thereof in NTC (negative temperature coefficient) thermosensitive chip |
| CN114464384A (en) * | 2022-03-02 | 2022-05-10 | 深圳安培龙科技股份有限公司 | Gold electrode NTC thermistor chip, preparation method and temperature sensor |
| CN116741480A (en) * | 2023-06-05 | 2023-09-12 | 肇庆市金龙宝电子有限公司 | NTC thermistor based on gold electrode sintering and preparation method thereof |
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| CN116741480A (en) * | 2023-06-05 | 2023-09-12 | 肇庆市金龙宝电子有限公司 | NTC thermistor based on gold electrode sintering and preparation method thereof |
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