CN109102917A - Electromagnetic shielding conductive slurry and preparation method thereof - Google Patents
Electromagnetic shielding conductive slurry and preparation method thereof Download PDFInfo
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- CN109102917A CN109102917A CN201810720819.3A CN201810720819A CN109102917A CN 109102917 A CN109102917 A CN 109102917A CN 201810720819 A CN201810720819 A CN 201810720819A CN 109102917 A CN109102917 A CN 109102917A
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- H—ELECTRICITY
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- 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
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Abstract
This application provides a kind of electromagnetic shielding conductive slurries and preparation method thereof.The electromagnetic shielding conductive slurry includes the raw material components of following portions by weight: 10~20 parts of carrier base rubber, 0.5~2 part of anti-sagging agent, 0.5~2 part of adhesion promoter, 3~7 parts of flow promortor, 0.5~2 part of anti-settling agent, 0.2~0.7 part of powder directing agent, 0.2~0.7 part of curing catalysts, 0.5~2 part of dispersing agent and 69~80 parts of conductive powder body.The preparation method of the electromagnetic shielding conductive slurry includes: the raw material components for weighing electromagnetic shielding conductive slurry；Carrier base rubber, anti-sagging agent, adhesion promoter, flow promortor, anti-settling agent, powder directing agent, curing catalysts and dispersing agent are separately added into double-planet agitating device, with 10~300 revs/min of mixing speed, 100~2000 revs/min of rate of dispersion, it is dispersed with stirring 5~120 minutes, forms mixture；The mixture formed to the above process is ground；Conductive powder body is added in the mixture after grinding, is dispersed with stirring；Above-mentioned process of lapping is repeated, finished product is formed.
Description
Technical field
This application involves conductive material technical fields, and in particular to a kind of electromagnetic shielding conductive slurry and preparation method thereof.
Background technique
Communication base station, laptop and mobile phone all can generate noise because of high-frequency electromagnetic wave interference at work,
Influence communication quality.Electromagnetic wave frequency range is higher, more easily propagates through gap leakage, and usual base station shell can install electricity at slit
Magnetic screen rubber strip is sealed, and has reached the optimum efficiency of sealing and electromagnetic shielding.The electromagnetic shielding of high band, mainly according to
Conductive layer generates vortex in electromagnetic field in electromagnetic shield rubber item.According to the skin effect of electromagnetic shielding, electromagnetic screen is generated
The formula of the conductor thickness and electromagnetic field intensity that cover effect is as follows:Wherein δ is conductor thickness, unit m；f
For wave frequency, unit Hz；μ is magnetic conductivity, unit Hm-1；σ is conductivity, unit Ω-1m-1.It is being electromagnetically shielded
Using upper, electric field strength is higher, and electric conductivity is better, and conductive layer thickness needed for reaching identical shield effectiveness is thinner.Therefore, 5G is communicated
In electromagnetic shield rubber item used, to save cost using thinner conductive layer, it is necessary to improve the electric conductivity of conductive layer.
Electromagnetic shield rubber item is divided into filled-type and application type two major classes, and the electromagnetic shield rubber item of application type is will to lead
Electrical ink or slurry is coated in rubber strip surface, and conductive layer is formed after baking-curing, to obtain electromagnetic shielding rubber
Adhesive tape.Due to the electromagnetic shield rubber good conductivity of application type, there is preferable effectiveness, therefore can will coat
The electromagnetic shield rubber item of type is applied in 5G communication.
In order to improve the electric conductivity of conductive layer in electromagnetic shield rubber item, a kind of electrocondution slurry of high conductivity is developed very
It is necessary.
Summary of the invention
The main purpose of the application is to provide a kind of electromagnetic shielding conductive slurry and preparation method thereof, to solve existing skill
The low technical problem of the conductivity of electrocondution slurry in art.
To achieve the goals above, according to the one aspect of the application, a kind of electromagnetic shielding conductive slurry is provided.
The electromagnetic shielding conductive slurry includes the raw material components of following portions by weight: 10~20 parts of carrier base rubber, 0.5~
2 parts of anti-sagging agent, 0.5~2 part of adhesion promoter, 3~7 parts of flow promortor, 0.5~2 part of anti-settling agent, 0.2~
0.7 part of powder directing agent, 0.2~0.7 part of curing catalysts, 0.5~2 part of dispersing agent and 69~80 parts of conducting powder
Body.
Further, including the raw material components of following portions by weight: 15 parts of carrier base rubber, 1 part of anti-sagging agent, 1 part
Adhesion promoter, 5 parts of flow promortor, 0.5 part of anti-settling agent, 0.5 part of powder directing agent, 0.5 part solidification catalysis
Agent, 0.5 part of dispersing agent and 76 parts of conductive powder body.
Further, including the raw material components of following portions by weight: 18.3 parts of carrier base rubber, 0.8 part of anti-sagging agent,
1 part of adhesion promoter, 5 parts of flow promortor, 1.5 parts of anti-settling agent, 0.5 part of powder directing agent, 0.5 part of solidification are urged
Agent, 0.5 part of dispersing agent and 71.9 parts of conductive powder body.
Further, the carrier base rubber is modified epoxy, polyurethane, ethylene-vinyl acetate copolymer, organosilicon
At least one of resin, silicon rubber or fluorine silicone rubber.
Further, the conductive powder body be proof gold powder, it is golden nickel powder, fine silver powder, silver-colored nickel powder, silver-bearing copper powder, silver-colored aluminium powder, silver-plated
At least one of glass powder or nickel carbon dust.
Further, the flow promortor is white spirit, kerosene, heptane, octane, hendecane or dodecane.
Further, the anti-settling agent is polyethylene wax, polyamide wax or fumed silica, and the dispersing agent is water glass
Glass, sodium tripolyphosphate, calgon, methyl anyl alcohol, cellulose derivative or polyacrylamide.
Further, the adhesion promoter is silane coupling agent, titanate coupling agent, aluminate coupling agent or rare earth
Coupling agent, the powder directing agent are BYK410, PN411, DOW CORNING DC3 or acetylbutyrylcellulose.
Further, the anti-sagging agent is organobentonite, BYK300 or BYK345, and the curing catalysts are sealing end
Isocyanates, dicyandiamide or platinum catalyst.
To achieve the goals above, according to the another aspect of the application, a kind of system of electromagnetic shielding conductive slurry is provided
Preparation Method.
The preparation method of the electromagnetic shielding conductive slurry the following steps are included:
Step 1, the raw material components of the electromagnetic shielding conductive slurry as described in any one of claim 1~9 claim are weighed；
Step 2, it is dispersed with stirring: by carrier base rubber, anti-sagging agent, adhesion promoter, flow promortor, anti-settling agent, powder
Directing agent, curing catalysts and dispersing agent are added separately in double-planet agitating device, with 10~300 revs/min of stirring speed
Degree, 100~2000 revs/min of rate of dispersion, are dispersed with stirring 5~120 minutes, form mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill exists
In 5~100 μ ms, is ground 5~60 minutes with 210~450 revs/min of speed, obtain mixture of the fineness less than 5 μm；
Step 4, it is dispersed with stirring: the mixture after grinding in conductive powder body and step 3 is added separately to double-planet stirring
In device, with 10~300 revs/min of mixing speed, 100~2000 revs/min of rate of dispersion, it is dispersed with stirring 5~120 points
Clock forms mixture；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill exists
In 5~100 μ ms, is ground 5~60 minutes with 210~450 revs/min of speed, obtains mixture of the fineness less than 20 μm,
Form finished product.
In the embodiment of the present application, the electromagnetic shielding obtained using above-mentioned electromagnetic shielding conductive formula of size and preparation method
Electrocondution slurry stability is good, has stronger electric conductivity, so that it is low to solve electromagnetic shielding conductive slurry conductivity in the prior art
The technical issues of.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Technical solution is clearly and completely described, it is clear that and described embodiment is only the embodiment of the application a part, and
The embodiment being not all of.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present application.
It should be noted that term " includes " in the description and claims of this application and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or
For the intrinsic other step or units of these process, methods, product or equipment.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
To provide a kind of electromagnetic shielding conductive slurry of high conductivity, this application discloses a kind of electromagnetic shielding conductive slurries
Material, which includes the raw material components of following portions by weight: 10~20 parts of carrier base rubber, 0.5~2 part
Anti-sagging agent, 0.5~2 part of adhesion promoter, 3~7 parts of flow promortor, 0.5~2 part of anti-settling agent, 0.2~0.7 part
Powder directing agent, 0.2~0.7 part of curing catalysts, 0.5~2 part of dispersing agent and 69~80 parts of conductive powder body.
Preferably, carrier base rubber be modified epoxy, polyurethane, ethylene-vinyl acetate copolymer, organic siliconresin,
At least one of silicon rubber or fluorine silicone rubber.Carrier base rubber can be modified epoxy, polyurethane, ethene-vinyl acetate
Any one in copolymer, organic siliconresin, silicon rubber or fluorine silicone rubber, or many of mixture, it can
It selects according to actual needs.
Preferably, conductive powder body is proof gold powder, golden nickel powder, fine silver powder, silver-colored nickel powder, silver-bearing copper powder, silver-colored aluminium powder, silvered glass powder
Or at least one of nickel carbon dust.Conductive powder body can for proof gold powder, golden nickel powder, fine silver powder, silver-colored nickel powder, silver-bearing copper powder, silver-colored aluminium powder,
Any one in silvered glass powder or nickel carbon dust, or many of mixture.
Preferably, flow promortor is white spirit, kerosene, heptane, octane, hendecane or dodecane, and flow promortor is white appliances
Any one in oil, kerosene, heptane, octane, hendecane or dodecane.
Preferably, anti-settling agent be polyethylene wax, polyamide wax or fumed silica, anti-settling agent can for polyethylene wax,
Any one in polyamide wax or fumed silica.
Preferably, dispersing agent is waterglass, sodium tripolyphosphate, calgon, methyl anyl alcohol, cellulose derivative or poly-
Acrylamide, dispersing agent can be waterglass, sodium tripolyphosphate, calgon, methyl anyl alcohol, cellulose derivative or poly- third
Any one in acrylamide.
Preferably, adhesion promoter is silane coupling agent, titanate coupling agent, aluminate coupling agent or rare earth coupling
Agent, adhesion promoter can be any in silane coupling agent, titanate coupling agent, aluminate coupling agent or rare-earth coupling agent
It is a kind of.
Preferably, powder directing agent is BYK410, PN411, DOW CORNING DC3 or acetylbutyrylcellulose, powder directing agent
It can be any one in BYK410, PN411, DOW CORNING DC3 or acetylbutyrylcellulose.Due to powder directing agent and coupling
The effect of agent so that the resistant to chemical etching of electromagnetic shielding conductive slurry greatly reinforces, ensure that long period electric fields, magnetic field, ozone,
It, can be with the resistivity of stable for extended periods of time in the environment such as salt fog, vapor.
Preferably, anti-sagging agent be organobentonite, BYK300 or BYK345, anti-sagging agent can for organobentonite,
Any one in BYK300 or BYK345.
Preferably, curing catalysts are blocked isocyanate, dicyandiamide or platinum catalyst, and curing catalysts can be envelope
Any one in isocyanate terminated, dicyandiamide or platinum catalyst.
Part is carried out to the embodiment of electromagnetic shielding conductive slurry described herein below to enumerate:
Embodiment 1:
The raw material components of electromagnetic shielding conductive slurry include: in embodiment 1
15 parts of modified epoxy, 1 part of organobentonite, 1 part of titanate coupling agent, 5 parts of heptane, 0.5 part
Fumed silica, 0.5 part of PN411,0.5 part of dicyandiamide, 0.5 part of sodium tripolyphosphate and 76 parts of silvered glass
Powder.
In embodiment 1 electromagnetic shielding conductive slurry preparation method the following steps are included:
Step 1, the raw material components of electromagnetic shielding conductive slurry in embodiment 1 are weighed；
Step 2, it is dispersed with stirring: by modified epoxy, organobentonite, titanate coupling agent, heptane, gas phase titanium dioxide
Silicon, PN411, dicyandiamide and sodium tripolyphosphate are added separately in double-planet agitating device, with 10 revs/min of mixing speed,
100 revs/min of rate of dispersion is dispersed with stirring 120 minutes, forms mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 100 μm and 50 μm, is ground 60 minutes with 210 revs/min of speed, obtains 4 μm of fineness of mixture；
Step 4, it is dispersed with stirring: the mixture after grinding in silvered glass powder and step 3 being added separately to double-planet and is stirred
It mixes in device, with 10 revs/min of mixing speed, 100 revs/min of rate of dispersion, is dispersed with stirring 120 minutes, form mixing
Body；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 100 μm and 50 μm, is ground 60 minutes with 210 revs/min of speed, obtains 15 μm of fineness of mixture, form finished product.
Embodiment 2:
The raw material components of electromagnetic shielding conductive slurry include: in embodiment 2
18.3 parts of ethylene-vinyl acetate copolymer, 0.8 part of BYK345,1 part of aluminate coupling agent, the 11 of 5 parts
Alkane, 1.5 parts of polyethylene wax, 0.5 part of DOW CORNING DC3,0.5 part of platinum catalyst, 0.5 part of waterglass and 71.9 parts
Nickel carbon dust.
In embodiment 2 electromagnetic shielding conductive slurry preparation method the following steps are included:
Step 1, the raw material components of electromagnetic shielding conductive slurry in embodiment 2 are weighed；
Step 2, it is dispersed with stirring: by ethylene-vinyl acetate copolymer, BYK345, aluminate coupling agent, hendecane, poly- second
Alkene wax, DOW CORNING DC3, platinum catalyst and waterglass are added separately in double-planet agitating device, with 100 revs/min stir
The rate of dispersion for mixing speed, 500 revs/min is dispersed with stirring 100 minutes, forms mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 80 μm and 40 μm, is ground 45 minutes with 300 revs/min of speed, obtains 3 μm of fineness of mixture；
Step 4, it is dispersed with stirring: the mixture after grinding in nickel carbon dust and step 3 is added separately to double-planet stirring dress
It in setting, with 100 revs/min of mixing speed, 500 revs/min of rate of dispersion, is dispersed with stirring 100 minutes, forms mixture；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 80 μm and 40 μm, is ground 45 minutes with 300 revs/min of speed, obtains 15 μm of fineness of mixture, form finished product.
Embodiment 3:
The raw material components of electromagnetic shielding conductive slurry include: in embodiment 3
20 parts of silicon rubber, 2 parts of organobentonite, 0.5 part of silane coupling agent, 4 parts of dodecane, 2 parts of polyamides
Amine wax, 0.2 part of BYK410,0.3 part of blocked isocyanate, 2 parts of sodium tripolyphosphate and 69 parts of fine silver powder.
In embodiment 3 electromagnetic shielding conductive slurry preparation method the following steps are included:
Step 1, the raw material components of electromagnetic shielding conductive slurry in embodiment 3 are weighed；
Step 2, be dispersed with stirring: by silicon rubber, organobentonite, silane coupling agent, dodecane, polyamide wax, BYK410,
Blocked isocyanate and sodium tripolyphosphate are added separately in double-planet agitating device, with 150 revs/min of mixing speed,
1000 revs/min of rate of dispersion is dispersed with stirring 50 minutes, forms mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 60 μm and 30 μm, is ground 35 minutes with 350 revs/min of speed, obtains 2.6 μm of fineness of mixture；
Step 4, it is dispersed with stirring: the mixture after grinding in fine silver powder and step 3 is added separately to double-planet stirring dress
It in setting, with 150 revs/min of mixing speed, 1000 revs/min of rate of dispersion, is dispersed with stirring 50 minutes, forms mixture；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 60 μm and 30 μm, is ground 35 minutes with 350 revs/min of speed, obtains 14 μm of fineness of mixture, form finished product.
Embodiment 4:
The raw material components of electromagnetic shielding conductive slurry include: in embodiment 4
10 parts of silicon rubber and fluorine silicone rubber, 0.5 part of BYK300,2 parts of titanate coupling agent, 3 parts of kerosene, 1.6
Part fumed silica, 0.7 part of acetylbutyrylcellulose, 0.7 part of platinum catalyst, 1.5 parts of calgon and
80 parts of fine silver powder.
In embodiment 4 electromagnetic shielding conductive slurry preparation method the following steps are included:
Step 1, the raw material components of electromagnetic shielding conductive slurry in embodiment 4 are weighed；
Step 2, it is dispersed with stirring: by silicon rubber, fluorine silicone rubber, BYK300, titanate coupling agent, kerosene, gas phase titanium dioxide
Silicon, acetylbutyrylcellulose, platinum catalyst and calgon are added separately in double-planet agitating device, with 200 revs/min
The mixing speed of clock, 1500 revs/min of rate of dispersion are dispersed with stirring 25 minutes, form mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 40 μm and 20 μm, is ground 25 minutes with 400 revs/min of speed, obtains 2.4 μm of fineness of mixture；
Step 4, it is dispersed with stirring: the mixture after grinding in fine silver powder and step 3 is added separately to double-planet stirring dress
It in setting, with 200 revs/min of mixing speed, 1500 revs/min of rate of dispersion, is dispersed with stirring 25 minutes, forms mixture；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 40 μm and 20 μm, is ground 25 minutes with 400 revs/min of speed, obtains 13 μm of fineness of mixture, form finished product.
Embodiment 5:
The raw material components of electromagnetic shielding conductive slurry include: in embodiment 5
13.3 parts of fluorine silicone rubber, 1.5 parts of BYK300,1.5 parts of aluminate coupling agent, 7 parts of white spirit, 1 part
Polyamide wax, 0.5 part of BYK410,0.2 part of dicyandiamide, 1 part of calgon and 74 parts of silver-colored nickel powder and silver-bearing copper powder.
In embodiment 5 electromagnetic shielding conductive slurry preparation method the following steps are included:
Step 1, the raw material components of electromagnetic shielding conductive slurry in embodiment 5 are weighed；
Step 2, be dispersed with stirring: by fluorine silicone rubber, BYK300, aluminate coupling agent, white spirit, polyamide wax, BYK410,
Dicyandiamide and calgon are added separately in double-planet agitating device, with 300 revs/min of mixing speed, 2000 revs/min
The rate of dispersion of clock is dispersed with stirring 5 minutes, forms mixture；
Step 3, it grinds: the mixture formed in step 2 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 5 μm and 5 μm, is ground 5 minutes with 450 revs/min of speed, obtains 2 μm of fineness of mixture；
Step 4, it is dispersed with stirring: the mixture after grinding in silver-colored nickel powder, silver-bearing copper powder and step 3 is added separately to double-planet
It in agitating device, with 300 revs/min of mixing speed, 2000 revs/min of rate of dispersion, is dispersed with stirring 5 minutes, is formed mixed
It is fit；
Step 5, it grinds: the mixture formed in step 4 being put into three-high mill, the roller spacing for adjusting three-high mill is
It 5 μm and 5 μm, is ground 5 minutes with 450 revs/min of speed, obtains 12 μm of fineness of mixture, form finished product.
Now the application bring beneficial effect is illustrated according to following experiment:
1, experimental material
Experimental group is the electromagnetic shielding conductive slurry being prepared using preparation method in the embodiment of the present application 1~5, control
Group is commercially available electromagnetic shielding conductive slurry.
2, experimental method
Electromagnetic shielding conductive slurry is evenly distributed on silica gel strip or silica gel paper by the way of coating first, electromagnetic screen
Cover electrocondution slurry with a thickness of 80 μm, the silica gel strip that electromagnetic shielding conductive slurry is distributed with or silica gel paper are then put into baking oven
In, at a temperature of 180 DEG C, solidify 30 minutes, finally using the volume electricity of four-point probe test electromagnetic shielding conductive slurry
Resistance rate.
3, experimental result
The experimental result of experimental group and control group is counted, comparing result is shown in Table 1:
1 experimental group of table and control group small product size Resistivity testing result
| Group | Volume resistivity (Ω m) |
| Control group | 0.01 |
| Embodiment 1 | 0.002 |
| Embodiment 2 | 0.003 |
| Embodiment 3 | 0.0003 |
| Embodiment 4 | 0.0005 |
| Embodiment 5 | 0.0014 |
As can be drawn from Table 1, the conductive rubber strip conductive layer that preparation method obtains into embodiment 5 using embodiment 1
Thickness it is smaller, corresponding volume resistivity is relatively low, the conductive rubber being wherein prepared in embodiment 2 using nickel carbon dust
For the thickness minimum of the conductive layer of item up to 80 μm, volume resistivity is 0.003 Ω m, and what is be prepared in other embodiments leads
Electric layer volume resistivity is minimum can be to 0.0003 Ω m, therefore, using the electricity that preparation method obtains into embodiment 5 of embodiment 1
Magnetic screen electrocondution slurry improves the electric conductivity of conductive layer.
Optionally, the thickness of conductive layer is between 20um~200um, when the thickness of conductive layer is between 20um~200um
When, the thickness of conductive layer is smaller, and the resistance of electromagnetic shielding conductive slurry is smaller, thus electric conductivity is strong, can satisfy 5G communication pair
The electromagnetic shielding requirement that conductive layer thickness is small and electric conductivity is strong.
Preferably, the thickness of conductive layer is between 20um~80um, when the thickness of conductive layer is between 20um~80um,
5G communication can not only be met to the electromagnetic shielding requirement that conductive layer thickness is small and electric conductivity is strong, and due to the thickness of conductive layer
It spends small, can save raw material, reduce manufacturing cost, there is good practicability.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of electromagnetic shielding conductive slurry, which is characterized in that the raw material components including following portions by weight: 10~20 parts of load
Body base rubber, 0.5~2 part of anti-sagging agent, 0.5~2 part of adhesion promoter, 3~7 parts of flow promortor, 0.5~2 part
Anti-settling agent, 0.2~0.7 part of powder directing agent, 0.2~0.7 part of curing catalysts, 0.5~2 part of dispersing agent and 69~80
The conductive powder body of part.
2. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the raw material group including following portions by weight
Point: 15 parts of carrier base rubber, 1 part of anti-sagging agent, 1 part of adhesion promoter, 5 parts of flow promortor, 0.5 part anti-settling
Agent, 0.5 part of powder directing agent, 0.5 part of curing catalysts, 0.5 part of dispersing agent and 76 parts of conductive powder body.
3. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the raw material group including following portions by weight
Point: 18.3 parts of carrier base rubber, 0.8 part of anti-sagging agent, 1 part of adhesion promoter, 5 parts of flow promortor, 1.5 parts anti-
Heavy agent, 0.5 part of powder directing agent, 0.5 part of curing catalysts, 0.5 part of dispersing agent and 71.9 parts of conductive powder body.
4. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the carrier base rubber is modified epoxy tree
At least one of rouge, polyurethane, ethylene-vinyl acetate copolymer, organic siliconresin, silicon rubber or fluorine silicone rubber.
5. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the conductive powder body is proof gold powder, gold
At least one of nickel powder, fine silver powder, silver-colored nickel powder, silver-bearing copper powder, silver-colored aluminium powder, silvered glass powder or nickel carbon dust.
6. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the flow promortor is white spirit, coal
Oil, heptane, octane, hendecane or dodecane.
7. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the anti-settling agent is polyethylene wax, gathers
Amide waxe or fumed silica, the dispersing agent are waterglass, sodium tripolyphosphate, calgon, methyl anyl alcohol, cellulose
Derivative or polyacrylamide.
8. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the adhesion promoter is that silane is even
Join agent, titanate coupling agent, aluminate coupling agent or rare-earth coupling agent, the powder directing agent is BYK410, PN411, Dao Kang
Peaceful DC3 or acetylbutyrylcellulose.
9. electromagnetic shielding conductive slurry according to claim 1, which is characterized in that the anti-sagging agent is organic swelling
Soil, BYK300 or BYK345, the curing catalysts are blocked isocyanate, dicyandiamide or platinum catalyst.
10. a kind of preparation method of electromagnetic shielding conductive slurry, which comprises the following steps:
Step 1, the raw material components of the electromagnetic shielding conductive slurry as described in any one of claim 1~9 claim are weighed；
Step 2, it is dispersed with stirring: carrier base rubber, anti-sagging agent, adhesion promoter, flow promortor, anti-settling agent, powder is oriented
Agent, curing catalysts and dispersing agent are added separately in double-planet agitating device, with 10~300 revs/min of mixing speed,
100~2000 revs/min of rate of dispersion is dispersed with stirring 5~120 minutes, forms mixture；
Step 3, grind: the mixture formed in step 2 be put into three-high mill, adjust the roller spacing of three-high mill 5~
In 100 μ ms, is ground 5~60 minutes with 210~450 revs/min of speed, obtain mixture of the fineness less than 5 μm；
Step 4, it is dispersed with stirring: the mixture after grinding in conductive powder body and step 3 is added separately to double-planet agitating device
In, with 10~300 revs/min of mixing speed, 100~2000 revs/min of rate of dispersion, it is dispersed with stirring 5~120 minutes,
Form mixture；
Step 5, grind: the mixture formed in step 4 be put into three-high mill, adjust the roller spacing of three-high mill 5~
In 100 μ ms, is ground 5~60 minutes with 210~450 revs/min of speed, obtain mixture of the fineness less than 20 μm, shape
At finished product.
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| CN110993146A (en) * | 2019-11-28 | 2020-04-10 | 广东羚光新材料股份有限公司 | Silver paste for NTC thermistor and preparation method and application thereof |
| CN112194983A (en) * | 2020-09-30 | 2021-01-08 | 深圳市飞荣达科技股份有限公司 | Conductive paint and preparation method thereof |
| CN113214719A (en) * | 2021-04-07 | 2021-08-06 | 北京中科纳通电子技术有限公司 | Conductive paste and preparation method thereof, conductive rubber containing conductive paste and preparation method thereof |
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| CN109741854A (en) * | 2018-12-29 | 2019-05-10 | 长江润发中科(张家港)纳米科技有限公司 | A kind of high temperature resistant electrocondution slurry and preparation method thereof for graphene heating film |
| CN110993146A (en) * | 2019-11-28 | 2020-04-10 | 广东羚光新材料股份有限公司 | Silver paste for NTC thermistor and preparation method and application thereof |
| CN110993146B (en) * | 2019-11-28 | 2021-06-29 | 广东羚光新材料股份有限公司 | Silver paste for NTC thermistor and preparation method and application thereof |
| CN112194983A (en) * | 2020-09-30 | 2021-01-08 | 深圳市飞荣达科技股份有限公司 | Conductive paint and preparation method thereof |
| CN113214719A (en) * | 2021-04-07 | 2021-08-06 | 北京中科纳通电子技术有限公司 | Conductive paste and preparation method thereof, conductive rubber containing conductive paste and preparation method thereof |
| CN113604191A (en) * | 2021-08-25 | 2021-11-05 | 北京中科纳通电子技术有限公司 | Adhesive for quartz crystal oscillator and preparation method thereof |
| CN114574152A (en) * | 2021-11-05 | 2022-06-03 | 北京中科纳通电子技术有限公司 | Electromagnetic shielding glue formula and preparation method thereof |
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