CN108172352A - A kind of preparation method of high heat conduction mica tape - Google Patents
A kind of preparation method of high heat conduction mica tape Download PDFInfo
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- CN108172352A CN108172352A CN201711245643.2A CN201711245643A CN108172352A CN 108172352 A CN108172352 A CN 108172352A CN 201711245643 A CN201711245643 A CN 201711245643A CN 108172352 A CN108172352 A CN 108172352A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/02—Drying; Impregnating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/04—Treating the surfaces, e.g. applying coatings
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Abstract
The invention discloses a kind of preparation methods of high heat conduction mica tape, belong to heat-conducting insulation material technical field.By modified epoxy, 2 modified meerschaums, additive, modified vitrification micro-bead is mixed to prepare modified adhesive, by modified adhesive Freezing smashing, obtained rubber powder, by rubber powder with 20~80g/m2Coated weight be coated on glass fabric on, and by mica paper be covered in coating rubber powder glass fibre cloth cover on, obtain mixing blank, it is 150~180 DEG C that blank, which will be mixed, in temperature, and pressure is hot-forming under conditions of being 0.8~1.2MPa, obtains blank, blank is cooled to room temperature, obtains mica fabric；Mica fabric mica paper with 10~30g/m2Coated weight coats modified epoxy, after baking 1~2h under conditions of being 140~160 DEG C in temperature, winds, cutting obtains high heat conduction mica tape.High heat conduction mica tape prepared by technical solution of the present invention has the characteristics that excellent mechanical property, gas permeability and heat conductivility.
Description
Technical field
The invention discloses a kind of preparation methods of high heat conduction mica tape, belong to heat-conducting insulation material technical field.
Background technology
As motor constantly develops to directions such as high voltage, large capacity and environmental protection, to the exhausted of high-voltage motor or generator
Edge structure proposes new requirement：Low-temperature-rise drops, and reduction insulation structure thickness improves the economic and technical norms of motor entirety, full
The technology requirement of sufficient heavy-duty motor.As the electrical insulating material of motor key, heat is prevented during motor operation
To iron core and cooling medium diverging, cause motor temperature rise higher, and higher operating temperature will certainly cause insulating materials aging,
Electrical property and mechanical property are reduced, power of motor reduction and service life is caused to reduce.Particularly large-scale air cooling generator is mainly logical
Special heat dissipation design is crossed to achieve the purpose that reduce motor temperature rise, and such design increases the volume of motor in which can not avoid
With manufacture cost, the design power of unit is also restrained.Adequate measures is taken to improve the heat-conductive characteristic of generator stator winding insulation,
It could fundamentally solve the above problems.Therefore, fever, heat transfer and the cooling that high pressure is clicked in operational process directly influence a little
Working efficiency, operational reliability and the service life hit, solving the problems, such as the fever, heat transfer and cooling of motor becomes modern electrical machine skill
Art develops one of main problem urgently to be resolved hurrily.
Mica tape has irreplaceable role in the major insulation material of motor, and thermal conductivity directly decides whole master
The heat conductivility of insulating materials.Mica tape mainly passes through appropriate process combining by components such as mica paper, glass cloth, adhesive
It forms.According to macroscopical heat transfer theory, the thermal conductivity factor of heterogeneous composite material is influenced maximum by the thermal conductivity factor of continuous phase, because
This key for improving mica tape thermal conductivity factor is that the thermal conductivity factor for improving filler.
Heat conduction slurry containing inorganic heat filling is coated on commonly glue mica less by Amada Co., Ltd.'s Gang Benche will etc.
Band glass cloth surface is prepared for high heat conduction low resin mica tape, improves the thermal conductivity factor of mica major insulation, but this method is applying
When covering heat conduction slurry, the adhesive content of low resin mica tape is caused to increase, the thermal conductivity of mica tape is made to promote limited, in addition heat conduction
Slurry can also block glass cloth mesh and the hole of mica paper layer, and the gas permeability of low resin mica tape is greatly reduced, and use this height
Heat conduction low resin mica tape is unfavorable for the infiltration of impregnating resin in VPI processing procedures, particularly voltage class is high, the insulation number of plies is more,
The big generating set main insulating layer of insulation thickness is difficult to be impregnated with completely, even causes insulating inner hair empty so as to generate insulative air gap
Layering so that insulation integrity declines, and is finally difficult to realize the purpose that entire insulating layer thermal conductivity factor greatly improves, while electrical
Insulation performance is also difficult to ensure that.
Therefore, how to improve traditional mica tape mechanical property, the shortcomings that gas permeability and heat conductivility are bad, to obtain higher
The mica tape of comprehensive performance is that it is promoted and applies, meets industrial production demand urgent problem to be solved.
Invention content
The present invention solves the technical problem of：For traditional mica tape mechanical property, gas permeability and heat conductivility not
The shortcomings that good, provides a kind of preparation method of high heat conduction mica tape.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Epoxy resin is heated to 70~80 DEG C, and adds in the paraphenylene terephthalamide and ring of 0.2~0.3 times of epoxy resin quality
The acrylonitrile-butadiene rubber latex that 0.2~0.4 times of oxygen resin quality after being stirred, obtains modified epoxy；
（2）It will pretreatment sepiolite and water in mass ratio 1：5~1：10 mixing, and add in pretreatment sepiolite quality 0.4~0.6
Pretreatment aluminium oxide again, sonic oscillation, filtering obtain 1 modified meerschaum；
（3）By 1 modified meerschaum and vaseline in mass ratio 1：3~1：6 mixing, Freezing smashing obtain 2 modified meerschaums；
（4）By organobentonite and pretreatment boron nitride in mass ratio 2：1~1：1 mixing, obtain mixed-powder, by mixed-powder with
Wax mixture in mass ratio 1：4~1：6 mixing, Freezing smashing obtain additive；
（5）By 2 modified meerschaums and modified epoxy in mass ratio 1：5~1：8 mixing, and add in modified epoxy matter
The additive of 0.1~0.3 times of amount and the polyethyleneimine of 0.1~0.2 times of modified epoxy quality, after being stirred, obtain glue
Glutinous agent；
（6）By glass bead and hydrofluoric acid in mass ratio 1：3~1：4 mixing are impregnated, and are filtered, dry, obtain pretreatment glass bead,
It will pretreatment glass bead and saturated sodium bicarbonate solution in mass ratio 1：5~1：8 mixing, after cooling, add pretreatment glass
Change the pretreatment boron nitride of 0.1~0.3 times of microballon quality, sonic oscillation filters, dry, obtains modified vitrification micro-bead；
（7）By modified vitrification micro-bead and adhesive in mass ratio 1：10~1：12 are stirred, and obtain modified adhesive, by modified adhesive
Glutinous agent freezing, crushes, obtains rubber powder；
（8）By rubber powder with 20~80g/m2Coated weight be coated on glass fabric, and mica paper is covered in coating rubber powder
Glass fibre cloth cover on, through hot pressing, cooling obtains mica fabric；
（9）Mica fabric mica paper with 10~30g/m2Coated weight coats modified epoxy, through baking, winds, divides
It cuts, obtains high heat conduction mica tape.
Step（1）The solid content of the acrylonitrile-butadiene rubber latex is 55~65%.
Step（1）The epoxy resin is any one in epoxy resin 142, epoxy resin 144 or epoxy resin 152.
Step（2）The preparation method of the pretreatment sepiolite is that sepiolite is moved into pulverizer, crushes, crosses 100~220
Mesh sieves, and obtains pretreatment sepiolite.
Step（2）The preparation method of the pretreatment aluminium oxide is by alumina powder and water in mass ratio 1：5~1：8 is mixed
It closes, and adds in the silane coupling agent KH-560 of 2~3 times of alumina powder quality, after being stirred, filter, it is dry, it must pre-process
Aluminium oxide, the alumina powder are alpha-type aluminum oxide of the grain size at 0.3~0.6 μm.
Step（4）The preparation method of the wax mixture is by paraffin and polyethylene wax in mass ratio 3：1~5：1 is mixed
It closes to get wax mixture, the paraffin is mineral wax mixture of the carbon atom number between 20~30.
The preparation method of the pretreatment boron nitride is by boron nitride powder and water in mass ratio 1：5~1：8 mixing, and add
Enter the silane coupling agent KH-560 of 2~3 times of boron nitride powder quality, after being stirred, filter, it is dry, obtain pretreatment boron nitride.
Step（6）The preparation method of the saturated sodium bicarbonate solution is adds water in beaker, and by water temperature in beaker
50 DEG C are heated to, sodium bicarbonate is added in into beaker, until there is crystal precipitation, is filtered to get saturated sodium bicarbonate solution.
Step（8）The glass fabric is alkali-free glass fiber cloth, the alkali-free glass fiber cloth thickness for 0.025~
0.075mm。
Step（8）The mica paper unit area is 100~250g/m2, thickness is 0.06~0.12mm.The present invention's has
Beneficial effect is：
（1）The present invention adds in 2 modified meerschaums when preparing high heat conduction mica tape, and first, sepiolite is passing through modified sea
A large amount of aluminium oxide are adsorbed in afrodite, after adding in high heat conduction mica tape system, sepiolite can be hardened when heated in dehydration, make sea
The alumina part adsorbed in afrodite is precipitated, and so as to improve the heat conductivility of product, and the sepiolite after hardening can be one
It is to improve the mechanical property of product to determine degree, while water evaporation can also improve the hole of product, so as to make the saturating of product
Gas improves, and secondly sepiolite is by modified, and surface cladding vaseline, the vaseline of cladding can be in product preparation process
Melt, so as to reduce the resistance between each substance of interiors of products, so as to which Heat Conduction Material in product be made to be uniformly distributed in system, and then
Improve the heat conductivility of product；
（2）The present invention adds in additive when preparing high heat conduction mica tape, and the wax mixture wrapped up in additive, which can be protected, to be added
Add agent in rubber powder using preceding failure, and the organobentonite in additive can be during product use in mica paper and glass fibers
Cross-linked network is formed between dimension cloth, and Heat Conduction Material boron nitride can be adsorbed with wax mixture on cross-linked network, so as to make production
The mechanical property and heat conductivility of product further improve；
（3）The present invention adds in modified vitrification micro-bead when preparing high heat conduction mica tape, on the one hand, contains in modified vitrification micro-bead
Sodium bicarbonate can be generated gas in hot pressing by thermal decomposition, so as to the tiny hole of abundant interiors of products, and then make product
Permeability improves, and on the other hand, the Heat Conduction Material deposited in glass bead can decompose the gas and stone of generation in sodium bicarbonate
It is scattered in system under the action of wax, so as to improve the heat conductivility of product.
Specific embodiment
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by beaker inner ring
Oxygen resin is heated to 70~80 DEG C, and the paraphenylene terephthalamide and asphalt mixtures modified by epoxy resin of 0.2~0.3 times of epoxy resin quality are added in into beaker
The acrylonitrile-butadiene rubber latex that 0.2~0.4 times of lipid amount is 70~85 DEG C in temperature, and rotating speed stirs under conditions of being 200~300r/min
After mixing 30~50min of mixing, modified epoxy is obtained；It will pretreatment sepiolite and water in mass ratio 1：5~1：10 mixing, and to
The pretreatment aluminium oxide that 0.4~0.6 times of pretreatment sepiolite quality is added in the mixture of sepiolite and water is pre-processed, must be mixed
Mixed liquor is moved into sonic oscillation instrument by liquid, after frequency is 15~30min of sonic oscillation under conditions of 55~65kHz, filtering,
Obtain 1 modified meerschaum；By 1 modified meerschaum and vaseline in mass ratio 1：3~1：6 mixing, in temperature be 70~80 DEG C,
Under conditions of rotating speed is 220~280r/min, after being stirred 20~40min, Freezing smashing obtains 2 modified meerschaums；To have
Machine bentonite and pretreatment boron nitride in mass ratio 2：1~1：1 mixing, in rotating speed to be stirred under conditions of 240~300r/min
After mixing 20~30min, mixed-powder is obtained, by mixed-powder and wax mixture in mass ratio 1：4~1：6 mixing, in temperature
It it is 100~110 DEG C, under conditions of rotating speed is 200~300r/min, after being stirred 15~30min, Freezing smashing must add
Agent；By 2 modified meerschaums and modified epoxy in mass ratio 1：5~1：8 are mixed in flask, and add in and change into flask
The additive of 0.1~0.3 times of property epoxy resin quality and the polyethyleneimine of 0.1~0.2 times of modified epoxy quality, Yu Wen
It is 80~90 DEG C to spend, and after rotating speed is stirred 10~30min under conditions of being 180~280r/min, obtains adhesive；Vitreous is micro-
Pearl is 8~12% hydrofluoric acid in mass ratio 1 with mass fraction：3~1：4 mixing, after 10~20min is impregnated under room temperature, mistake
Filter, obtains filter cake, under conditions of being 60~80 DEG C in temperature by filter cake after dry 30~40min, obtains pretreatment glass bead, will be pre-
Handle glass bead and saturated sodium bicarbonate solution in mass ratio 1：5~1：8 mixing, by pretreatment glass bead and unsaturated carbonate
After the mixture of hydrogen sodium solution is cooled to 20 DEG C, then add into the mixture of pretreatment glass bead and saturated sodium bicarbonate solution
Enter to pre-process the pretreatment boron nitride of 0.1~0.3 times of glass bead quality, obtain treatment fluid, treatment fluid is moved into sonic oscillation instrument,
In frequency under conditions of 55~60kHz, after 10~15min of sonic oscillation, filtering obtains filter residue, by filter residue in temperature for 40~
Under conditions of 45 DEG C after dry 30~40min, modified vitrification micro-bead is obtained；By modified vitrification micro-bead and adhesive in mass ratio 1：10
~1：12 mixing, in temperature be 70~80 DEG C, rotating speed be 300~450r/min under conditions of, after being stirred 15~25min,
Adhesive must be modified, modified adhesive is freezed, crushes, obtains rubber powder；By rubber powder with 20~80g/m2Coated weight be coated on glass
In glass fiber cloth, and mica paper is covered on the glass fibre cloth cover of coating rubber powder, obtains mixing blank, by mixing blank in temperature
It is 150~180 DEG C to spend, and pressure is hot-forming under conditions of being 0.8~1.2MPa, obtains blank, blank is cooled to room temperature, obtain cloud
Female fabric；Mica fabric mica paper with 10~30g/m2Coated weight coats modified epoxy, in temperature for 140~
It after baking 1~2h under conditions of 160 DEG C, winds, cutting obtains high heat conduction mica tape.The solid content of told acrylonitrile-butadiene rubber latex is
55~65%.The epoxy resin is any one in epoxy resin 142, epoxy resin 144 or epoxy resin 152.The pre- place
The preparation method of reason sepiolite is that sepiolite is moved into pulverizer, is crushed, and crosses 100~220 mesh sieve, obtains pretreatment sepiolite.Institute
The preparation method for stating pretreatment aluminium oxide is by alumina powder and water in mass ratio 1：5~1：8 mixing, and add in alumina powder
The silane coupling agent KH-560 of last 2~3 times of quality after being stirred, is filtered, dry, obtains pretreatment aluminium oxide, the aluminium oxide
Powder is alpha-type aluminum oxide of the grain size at 0.3~0.6 μm.The preparation method of the wax mixture is by paraffin and polyethylene wax
In mass ratio 3：1~5：To get wax mixture, the paraffin is paraffin mixing of the carbon atom number between 20~30 for 1 mixing
Object.The preparation method of the pretreatment boron nitride is by boron nitride powder and water in mass ratio 1：5~1：8 mixing, and add in oxygen
Change the silane coupling agent KH-560 of 2~3 times of aluminium powder quality, after being stirred, filter, it is dry, obtain pretreatment boron nitride.It is described
The preparation method of saturated sodium bicarbonate solution is adds water in beaker, and by water temperature heating in beaker to 50 DEG C, into beaker
Sodium bicarbonate is heated, until there is crystal precipitation, is filtered to get saturated sodium bicarbonate solution.The glass fabric is alkali-free glass
Glass fiber cloth, the alkali-free glass fiber cloth thickness are 0.025~0.075mm.The mica paper unit area for 100~
250g/m2, thickness is 0.06~0.12mm.
Example 1
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by asphalt mixtures modified by epoxy resin in beaker
Fat is heated to 80 DEG C, and adds in into beaker 0.4 times of the paraphenylene terephthalamide of 0.3 times of epoxy resin quality and epoxy resin quality
Acrylonitrile-butadiene rubber latex is 85 DEG C in temperature, after rotating speed is stirred 50min under conditions of being 300r/min, obtains modified epoxy tree
Fat；It will pretreatment sepiolite and water in mass ratio 1：10 mixing, and pre- place is added in into the mixture of pretreatment sepiolite and water
Manage the pretreatment aluminium oxide of 0.6 times of sepiolite quality, obtain mixed liquor, mixed liquor is moved into sonic oscillation instrument, in frequency be 65kHz
Under conditions of after sonic oscillation 30min, filtering obtains 1 modified meerschaum；By 1 modified meerschaum with vaseline in mass ratio
1：6 mixing are 80 DEG C in temperature, and under conditions of rotating speed is 280r/min, after being stirred 40min, Freezing smashing obtains 2 times and changes
Property sepiolite；By organobentonite and pretreatment boron nitride in mass ratio 1：1 mixing, in rotating speed to be stirred under conditions of 300r/min
After mixing mixing 30min, mixed-powder is obtained, by mixed-powder and wax mixture in mass ratio 1：6 mixing, in temperature be 110 DEG C,
Under conditions of rotating speed is 300r/min, after being stirred 30min, Freezing smashing obtains additive；By 2 modified meerschaums with changing
Property epoxy resin in mass ratio 1：8 are mixed in flask, and the additive of 0.3 times of modified epoxy quality is added in into flask
It it is 90 DEG C in temperature, rotating speed stirs mixed under conditions of being 280r/min with 0.2 times of polyethyleneimine of modified epoxy quality
After closing 30min, adhesive is obtained；It is 12% hydrofluoric acid in mass ratio 1 by glass bead and mass fraction：4 mixing, in room temperature condition
After lower immersion 20min, filtering obtains filter cake, under conditions of being 80 DEG C in temperature by filter cake after dry 40min, obtains pretreatment vitreous
Microballon, by pretreatment glass bead and saturated sodium bicarbonate solution in mass ratio 1：8 mixing, by pretreatment glass bead and saturation
After the mixture of sodium bicarbonate solution is cooled to 20 DEG C, then to pretreatment glass bead and saturated sodium bicarbonate solution mixture
The middle pretreatment boron nitride for adding in 0.3 times of pretreatment glass bead quality, obtains treatment fluid, and treatment fluid is moved into sonic oscillation instrument,
In frequency under conditions of 60kHz, after sonic oscillation 15min, filtering obtains filter residue, by filter residue under conditions of temperature is 45 DEG C
After dry 40min, modified vitrification micro-bead is obtained；By modified vitrification micro-bead and adhesive in mass ratio 1：12 mixing, in temperature be 80
DEG C, under conditions of rotating speed is 450r/min, after being stirred 25min, modified adhesive is obtained, modified adhesive is freezed, is crushed,
Obtain rubber powder；By rubber powder with 80g/m2Coated weight be coated on glass fabric on, and by mica paper be covered in coating rubber powder glass
On glass fiber cloth cover, mixing blank is obtained, will mix blank in temperature is 180 DEG C, and pressure is hot-forming under conditions of being 1.2MPa,
Blank is obtained, blank is cooled to room temperature, obtains mica fabric；Mica fabric mica paper with 30g/m2Coated weight coating is modified
Epoxy resin after baking 2h under conditions of being 160 DEG C in temperature, is wound, and cutting obtains high heat conduction mica tape.Told nitrile rubber
The solid content of lotion is 65%.The epoxy resin is epoxy resin 142.The preparation method of the pretreatment sepiolite is will be extra large
Afrodite moves into pulverizer, crushes, and crosses 220 mesh sieve, obtains pretreatment sepiolite.The preparation method of the pretreatment aluminium oxide is by oxygen
Change aluminium powder and water in mass ratio 1：8 mixing, and the silane coupling agent KH-560 of 3 times of alumina powder quality is added in, stirring is mixed
After conjunction, filter, it is dry, pretreatment aluminium oxide is obtained, the alumina powder is alpha-type aluminum oxide of the grain size at 0.6 μm.The wax
The preparation method of mixture is by paraffin and polyethylene wax in mass ratio 5：To get wax mixture, the paraffin is carbon for 1 mixing
Mineral wax mixture of the atomicity between 20~30.Boron nitride powder and water is are pressed by the preparation method of the pretreatment boron nitride
Mass ratio 1：8 mixing, and the silane coupling agent KH-560 of 3 times of alumina powder quality is added in, after being stirred, filter, it is dry,
Boron nitride must be pre-processed.The preparation method of the saturated sodium bicarbonate solution is adds water in beaker, and by water temperature in beaker
50 DEG C are heated to, sodium bicarbonate is heated into beaker, until there is crystal precipitation, is filtered to get saturated sodium bicarbonate solution.It is described
Glass fabric is alkali-free glass fiber cloth, and the alkali-free glass fiber cloth thickness is 0.075mm.The mica paper unit area
For 250g/m2, thickness 0.12mm.
Example 2
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by asphalt mixtures modified by epoxy resin in beaker
Fat is heated to 80 DEG C, and adds in into beaker 0.4 times of the paraphenylene terephthalamide of 0.3 times of epoxy resin quality and epoxy resin quality
Acrylonitrile-butadiene rubber latex is 85 DEG C in temperature, after rotating speed is stirred 50min under conditions of being 300r/min, obtains modified epoxy tree
Fat；It will pretreatment sepiolite and water in mass ratio 1：10 mixing, filtering obtain 1 modified meerschaum；By 1 modified meerschaum with
Vaseline in mass ratio 1：6 mixing, in temperature be 80 DEG C, rotating speed be 280r/min under conditions of, it is cold after being stirred 40min
Agar is broken, obtains 2 modified meerschaums；By organobentonite and pretreatment boron nitride in mass ratio 1：1 mixes, and is in rotating speed
After being stirred 30min under conditions of 300r/min, mixed-powder is obtained, by mixed-powder and wax mixture in mass ratio 1：6
Mixing is 110 DEG C in temperature, and under conditions of rotating speed is 300r/min, after being stirred 30min, Freezing smashing obtains additive；
By 2 modified meerschaums and modified epoxy in mass ratio 1：8 are mixed in flask, and modified epoxy tree is added in into flask
The additive and the polyethyleneimine of 0.2 times of modified epoxy quality that 0.3 times of lipid amount are 90 DEG C in temperature, and rotating speed is
After being stirred 30min under conditions of 280r/min, adhesive is obtained；Glass bead and mass fraction are pressed into matter for 12% hydrofluoric acid
Measure ratio 1：4 mixing, after 20min is impregnated under room temperature, filtering obtains filter cake, is done under conditions of being 80 DEG C in temperature by filter cake
After dry 40min, pretreatment glass bead is obtained, by pretreatment glass bead and saturated sodium bicarbonate solution in mass ratio 1：8 mixing,
After the mixture for pre-processing glass bead and saturated sodium bicarbonate solution is cooled to 20 DEG C, then to pretreatment glass bead with satisfying
Pretreatment boron nitride with 0.3 times of pretreatment glass bead quality is added in the mixture of sodium bicarbonate solution, obtains treatment fluid, will
Treatment fluid moves into sonic oscillation instrument, in frequency under conditions of 60kHz, after sonic oscillation 15min, filtering obtains filter residue, by filter residue
Under conditions of being 45 DEG C in temperature after dry 40min, modified vitrification micro-bead is obtained；By modified vitrification micro-bead and adhesive in mass ratio
1：12 mixing are 80 DEG C in temperature, under conditions of rotating speed is 450r/min, after being stirred 25min, obtain modified adhesive, will
Modified adhesive freezing, crushes, obtains rubber powder；By rubber powder with 80g/m2Coated weight be coated on glass fabric, and by mica
Paper is covered on the glass fibre cloth cover of coating rubber powder, obtains mixing blank, and will mix blank in temperature is 180 DEG C, and pressure is
It is hot-forming under conditions of 1.2MPa, blank is obtained, blank is cooled to room temperature, obtains mica fabric；In the mica paper of mica fabric
Face is with 30g/m2Coated weight coats modified epoxy, after baking 2h under conditions of being 160 DEG C in temperature, winds, cutting obtains high
Heat conduction mica tape.The solid content of told acrylonitrile-butadiene rubber latex is 65%.The epoxy resin is epoxy resin 142.The pretreatment
The preparation method of sepiolite is that sepiolite is moved into pulverizer, is crushed, and crosses 220 mesh sieve, obtains pretreatment sepiolite.The wax is mixed
The preparation method for closing object is by paraffin and polyethylene wax in mass ratio 5：To get wax mixture, the paraffin is carbon original for 1 mixing
Mineral wax mixture of the subnumber between 20~30.The preparation method of the pretreatment boron nitride is that boron nitride powder and water are pressed matter
Measure ratio 1：8 mixing, and the silane coupling agent KH-560 of 3 times of alumina powder quality is added in, after being stirred, filter, it is dry, it obtains
Pre-process boron nitride.The preparation method of the saturated sodium bicarbonate solution is adds water in beaker, and water temperature in beaker is added
Heat heats sodium bicarbonate into beaker to 50 DEG C, until there is crystal precipitation, filters to get saturated sodium bicarbonate solution.The glass
Glass fiber cloth is alkali-free glass fiber cloth, and the alkali-free glass fiber cloth thickness is 0.075mm.The mica paper unit area is
250g/m2, thickness 0.12mm.
Example 3
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by asphalt mixtures modified by epoxy resin in beaker
Fat is heated to 80 DEG C, and adds in into beaker 0.4 times of the paraphenylene terephthalamide of 0.3 times of epoxy resin quality and epoxy resin quality
Acrylonitrile-butadiene rubber latex is 85 DEG C in temperature, after rotating speed is stirred 50min under conditions of being 300r/min, obtains modified epoxy tree
Fat；It will pretreatment sepiolite and water in mass ratio 1：10 mixing, and pre- place is added in into the mixture of pretreatment sepiolite and water
Manage the pretreatment aluminium oxide of 0.6 times of sepiolite quality, obtain mixed liquor, mixed liquor is moved into sonic oscillation instrument, in frequency be 65kHz
Under conditions of after sonic oscillation 30min, filtering obtains 1 modified meerschaum；Organobentonite and pretreatment boron nitride are pressed into quality
Than 1：1 mixing after rotating speed is is stirred 30min under conditions of 300r/min, obtains mixed-powder, by mixed-powder and wax
Mixture in mass ratio 1：6 mixing, in temperature be 110 DEG C, rotating speed be 300r/min under conditions of, it is cold after being stirred 30min
Agar is broken, obtains additive；By 1 modified meerschaum and modified epoxy in mass ratio 1：8 are mixed in flask, and to flask
The polyethyleneimine of middle 0.2 times of additive and modified epoxy quality for adding in 0.3 times of modified epoxy quality, in temperature
It is 90 DEG C, after rotating speed is stirred 30min under conditions of being 280r/min, obtains adhesive；It is by glass bead and mass fraction
12% hydrofluoric acid in mass ratio 1：4 mixing, under room temperature impregnate 20min after, filtering, obtain filter cake, by filter cake in temperature be 80
Under conditions of DEG C after dry 40min, pretreatment glass bead is obtained, pretreatment glass bead and saturated sodium bicarbonate solution are pressed into matter
Measure ratio 1：8 mixing, after the mixture for pre-processing glass bead and saturated sodium bicarbonate solution is cooled to 20 DEG C, then to pretreatment
The pretreatment nitridation of 0.3 times of pretreatment glass bead quality is added in the mixture of glass bead and saturated sodium bicarbonate solution
Boron obtains treatment fluid, and treatment fluid is moved into sonic oscillation instrument, under conditions of frequency is 60kHz, after sonic oscillation 15min, and mistake
Filter, obtains filter residue, under conditions of being 45 DEG C in temperature by filter residue after dry 40min, obtains modified vitrification micro-bead；By modified vitrification micro-bead
With adhesive in mass ratio 1：12 mixing, in temperature be 80 DEG C, rotating speed be 450r/min under conditions of, after being stirred 25min,
Adhesive must be modified, modified adhesive is freezed, crushes, obtains rubber powder；By rubber powder with 80g/m2Coated weight be coated on glass fibers
On Wei Bu, and mica paper is covered on the glass fibre cloth cover of coating rubber powder, obtains mixing blank, be in temperature by mixing blank
180 DEG C, pressure is hot-forming under conditions of being 1.2MPa, obtains blank, blank is cooled to room temperature, obtain mica fabric；In mica
The mica paper of fabric is with 30g/m2Coated weight coats modified epoxy, after baking 2h under conditions of being 160 DEG C in temperature, receives
Volume, cutting, obtains high heat conduction mica tape.The solid content of told acrylonitrile-butadiene rubber latex is 65%.The epoxy resin is epoxy resin
142.The preparation method of the pretreatment sepiolite is that sepiolite is moved into pulverizer, is crushed, and crosses 220 mesh sieve, must pre-process sea
Afrodite.The preparation method of the pretreatment aluminium oxide is by alumina powder and water in mass ratio 1：8 mixing, and add in aluminium oxide
The silane coupling agent KH-560 of 3 times of powder quality after being stirred, is filtered, dry, obtains pretreatment aluminium oxide, the aluminium oxide
Powder is alpha-type aluminum oxide of the grain size at 0.6 μm.The preparation method of the wax mixture is that paraffin and polyethylene wax are pressed quality
Than 5：To get wax mixture, the paraffin is mineral wax mixture of the carbon atom number between 20~30 for 1 mixing.The pre- place
The preparation method for managing boron nitride is by boron nitride powder and water in mass ratio 1：8 mixing, and add in 3 times of alumina powder quality
Silane coupling agent KH-560 after being stirred, is filtered, dry, obtains pretreatment boron nitride.The system of the saturated sodium bicarbonate solution
Preparation Method is adds water in beaker, and water temperature heating in beaker is heated sodium bicarbonate into beaker to 50 DEG C, until there is crystalline substance
Body is precipitated, and filters to get saturated sodium bicarbonate solution.The glass fabric be alkali-free glass fiber cloth, the alkali-free glass
Fiber cloth thickness is 0.075mm.The mica paper unit area is 250g/m2, thickness 0.12mm.
Example 4
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by asphalt mixtures modified by epoxy resin in beaker
Fat is heated to 80 DEG C, and adds in into beaker 0.4 times of the paraphenylene terephthalamide of 0.3 times of epoxy resin quality and epoxy resin quality
Acrylonitrile-butadiene rubber latex is 85 DEG C in temperature, after rotating speed is stirred 50min under conditions of being 300r/min, obtains modified epoxy tree
Fat；It will pretreatment sepiolite and water in mass ratio 1：10 mixing, and pre- place is added in into the mixture of pretreatment sepiolite and water
Manage the pretreatment aluminium oxide of 0.6 times of sepiolite quality, obtain mixed liquor, mixed liquor is moved into sonic oscillation instrument, in frequency be 65kHz
Under conditions of after sonic oscillation 30min, filtering obtains 1 modified meerschaum；By 1 modified meerschaum with vaseline in mass ratio
1：6 mixing are 80 DEG C in temperature, and under conditions of rotating speed is 280r/min, after being stirred 40min, Freezing smashing obtains 2 times and changes
Property sepiolite；By 2 modified meerschaums and modified epoxy in mass ratio 1：8 are mixed in flask, and are added in into flask
The polyethyleneimine that 0.2 times of modified epoxy quality is 90 DEG C in temperature, and rotating speed is stirred under conditions of being 280r/min
After 30min, adhesive is obtained；It is 12% hydrofluoric acid in mass ratio 1 by glass bead and mass fraction：4 mixing, under room temperature
After impregnating 20min, filtering obtains filter cake, and under conditions of being 80 DEG C in temperature by filter cake after dry 40min, it is micro- must to pre-process vitreous
Pearl, by pretreatment glass bead and saturated sodium bicarbonate solution in mass ratio 1：8 mixing, by pretreatment glass bead and saturated carbon
After the mixture of sour hydrogen sodium solution is cooled to 20 DEG C, then into the mixture of pretreatment glass bead and saturated sodium bicarbonate solution
The pretreatment boron nitride of 0.3 times of pretreatment glass bead quality is added in, obtains treatment fluid, treatment fluid is moved into sonic oscillation instrument, in
Under conditions of frequency is 60kHz, after sonic oscillation 15min, filtering obtains filter residue, is done under conditions of being 45 DEG C in temperature by filter residue
After dry 40min, modified vitrification micro-bead is obtained；By modified vitrification micro-bead and adhesive in mass ratio 1：12 mixing, in temperature be 80 DEG C,
Under conditions of rotating speed is 450r/min, after being stirred 25min, modified adhesive is obtained, modified adhesive is freezed, crushes, obtains
Rubber powder；By rubber powder with 80g/m2Coated weight be coated on glass fabric on, and by mica paper be covered in coating rubber powder glass
On fiber cloth cover, mixing blank is obtained, will mix blank in temperature is 180 DEG C, and pressure is hot-forming under conditions of being 1.2MPa, obtains
Blank is cooled to room temperature by blank, obtains mica fabric；Mica fabric mica paper with 30g/m2The modified ring of coated weight coating
Oxygen resin after baking 2h under conditions of being 160 DEG C in temperature, is wound, and cutting obtains high heat conduction mica tape.Told nitrile rubber breast
The solid content of liquid is 65%.The epoxy resin is epoxy resin 142.The preparation method of the pretreatment sepiolite is by Hai Pao
Stone moves into pulverizer, crushes, and crosses 220 mesh sieve, obtains pretreatment sepiolite.The preparation method of the pretreatment aluminium oxide is will aoxidize
Aluminium powder and water in mass ratio 1：8 mixing, and the silane coupling agent KH-560 of 3 times of alumina powder quality is added in, it is stirred
Afterwards, it filters, it is dry, pretreatment aluminium oxide is obtained, the alumina powder is alpha-type aluminum oxide of the grain size at 0.6 μm.The pretreatment
The preparation method of boron nitride is by boron nitride powder and water in mass ratio 1：8 mixing, and add in the silicon of 3 times of alumina powder quality
Alkane coupling agent KH-560 after being stirred, is filtered, dry, obtains pretreatment boron nitride.The preparation of the saturated sodium bicarbonate solution
Method is adds water in beaker, and water temperature heating in beaker is heated sodium bicarbonate into beaker to 50 DEG C, until there is crystal
It is precipitated, filters to get saturated sodium bicarbonate solution.The glass fabric is alkali-free glass fiber cloth, and the alkali-free glass is fine
It is 0.075mm to tie up cloth thickness.The mica paper unit area is 250g/m2, thickness 0.12mm.
Example 5
It by epoxy resin plus moves into beaker, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, by asphalt mixtures modified by epoxy resin in beaker
Fat is heated to 80 DEG C, and adds in into beaker 0.4 times of the paraphenylene terephthalamide of 0.3 times of epoxy resin quality and epoxy resin quality
Acrylonitrile-butadiene rubber latex is 85 DEG C in temperature, after rotating speed is stirred 50min under conditions of being 300r/min, obtains modified epoxy tree
Fat；It will pretreatment sepiolite and water in mass ratio 1：10 mixing, and pre- place is added in into the mixture of pretreatment sepiolite and water
Manage the pretreatment aluminium oxide of 0.6 times of sepiolite quality, obtain mixed liquor, mixed liquor is moved into sonic oscillation instrument, in frequency be 65kHz
Under conditions of after sonic oscillation 30min, filtering obtains 1 modified meerschaum；By 1 modified meerschaum with vaseline in mass ratio
1：6 mixing are 80 DEG C in temperature, and under conditions of rotating speed is 280r/min, after being stirred 40min, Freezing smashing obtains 2 times and changes
Property sepiolite；By organobentonite and pretreatment boron nitride in mass ratio 1：1 mixing, in rotating speed to be stirred under conditions of 300r/min
After mixing mixing 30min, mixed-powder is obtained, by mixed-powder and wax mixture in mass ratio 1：6 mixing, in temperature be 110 DEG C,
Under conditions of rotating speed is 300r/min, after being stirred 30min, Freezing smashing obtains additive；By 2 modified meerschaums with changing
Property epoxy resin in mass ratio 1：8 are mixed in flask, and the additive of 0.3 times of modified epoxy quality is added in into flask
It it is 90 DEG C in temperature, rotating speed stirs mixed under conditions of being 280r/min with 0.2 times of polyethyleneimine of modified epoxy quality
After closing 30min, adhesive is obtained；Adhesive is freezed, crushes, obtains rubber powder；By rubber powder with 80g/m2Coated weight be coated on glass
In fiber cloth, and mica paper is covered on the glass fibre cloth cover of coating rubber powder, obtains mixing blank, by mixing blank in temperature
It it is 180 DEG C, pressure is hot-forming under conditions of being 1.2MPa, obtains blank, blank is cooled to room temperature, obtain mica fabric；In cloud
The mica paper of female fabric is with 30g/m2Coated weight coats modified epoxy, after baking 2h under conditions of being 160 DEG C in temperature,
Winding, cutting, obtains high heat conduction mica tape.The solid content of told acrylonitrile-butadiene rubber latex is 65%.The epoxy resin is epoxy resin
142.The preparation method of the pretreatment sepiolite is that sepiolite is moved into pulverizer, is crushed, and crosses 220 mesh sieve, must pre-process sea
Afrodite.The preparation method of the pretreatment aluminium oxide is by alumina powder and water in mass ratio 1：8 mixing, and add in aluminium oxide
The silane coupling agent KH-560 of 3 times of powder quality after being stirred, is filtered, dry, obtains pretreatment aluminium oxide, the aluminium oxide
Powder is alpha-type aluminum oxide of the grain size at 0.6 μm.The preparation method of the wax mixture is that paraffin and polyethylene wax are pressed quality
Than 5：To get wax mixture, the paraffin is mineral wax mixture of the carbon atom number between 20~30 for 1 mixing.The pre- place
The preparation method for managing boron nitride is by boron nitride powder and water in mass ratio 1：8 mixing, and add in 3 times of alumina powder quality
Silane coupling agent KH-560 after being stirred, is filtered, dry, obtains pretreatment boron nitride.The glass fabric is alkali-free glass
Fiber cloth, the alkali-free glass fiber cloth thickness are 0.075mm.The mica paper unit area is 250g/m2, thickness is
0.12mm。
Comparative example：The mica tape of Wuhan insulating materials Co., Ltd production.
The high heat conduction mica tape of 1 to 5 gained of example and comparative example product are subjected to performance detection, specific detection method is such as
Under：
1. mechanical property：Tensile strength test, rate of extension are carried out using the loading of universal testing machine constant speed according to GB/T5019.2
For 50mm/min, tensile strength result takes the intermediate value of 5 test values.
2. gas permeability：Test specimen air permeability is detected according to GB/T 5402；
3. heat conductivility：Test specimen thermal conductivity factor is detected according to GB/T 10295.
Specific testing result is as shown in table 1：
Table 1
| Detection project | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example |
| Tensile strength/MPa | 123 | 113 | 83 | 107 | 99 | 67 |
| Air permeability/（s/100mL） | 897 | 741 | 553 | 658 | 614 | 238 |
| Thermal conductivity factor/（W/（m·K）） | 0.632 | 0.477 | 0.258 | 0.369 | 0.281 | 0.143 |
By 1 testing result of table it is found that high heat conduction mica tape prepared by technical solution of the present invention has excellent mechanical property, breathes freely
It the characteristics of property and heat conductivility, has broad prospects in the development of insulating materials industry.
Claims (10)
1. a kind of preparation method of high heat conduction mica tape, it is characterised in that specifically preparation process is：
（1）Epoxy resin is heated to 70~80 DEG C, and adds in the paraphenylene terephthalamide and ring of 0.2~0.3 times of epoxy resin quality
The acrylonitrile-butadiene rubber latex that 0.2~0.4 times of oxygen resin quality after being stirred, obtains modified epoxy；
（2）It will pretreatment sepiolite and water in mass ratio 1：5~1：10 mixing, and add in pretreatment sepiolite quality 0.4~0.6
Pretreatment aluminium oxide again, sonic oscillation, filtering obtain 1 modified meerschaum；
（3）By 1 modified meerschaum and vaseline in mass ratio 1：3~1：6 mixing, Freezing smashing obtain 2 modified meerschaums；
（4）By organobentonite and pretreatment boron nitride in mass ratio 2：1~1：1 mixing, obtain mixed-powder, by mixed-powder with
Wax mixture in mass ratio 1：4~1：6 mixing, Freezing smashing obtain additive；
（5）By 2 modified meerschaums and modified epoxy in mass ratio 1：5~1：8 mixing, and add in modified epoxy matter
The additive of 0.1~0.3 times of amount and the polyethyleneimine of 0.1~0.2 times of modified epoxy quality, after being stirred, obtain glue
Glutinous agent；
（6）By glass bead and hydrofluoric acid in mass ratio 1：3~1：4 mixing are impregnated, and are filtered, dry, obtain pretreatment glass bead,
It will pretreatment glass bead and saturated sodium bicarbonate solution in mass ratio 1：5~1：8 mixing, after cooling, add pretreatment glass
Change the pretreatment boron nitride of 0.1~0.3 times of microballon quality, sonic oscillation filters, dry, obtains modified vitrification micro-bead；
（7）By modified vitrification micro-bead and adhesive in mass ratio 1：10~1：12 are stirred, and obtain modified adhesive, by modified adhesive
Glutinous agent freezing, crushes, obtains rubber powder；
（8）By rubber powder with 20~80g/m2Coated weight be coated on glass fabric, and mica paper is covered in coating rubber powder
On glass fibre cloth cover, through hot pressing, cooling obtains mica fabric；
（9）Mica fabric mica paper with 10~30g/m2Coated weight coats modified epoxy, through baking, winds, divides
It cuts, obtains high heat conduction mica tape.
2. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（1）The fourth
The solid content of nitrile rubber lotion is 55~65%.
3. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（1）The ring
Oxygen resin is any one in epoxy resin 142, epoxy resin 144 or epoxy resin 152.
4. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（2）It is described pre-
The preparation method of processing sepiolite is that sepiolite is moved into pulverizer, is crushed, and crosses 100~220 mesh sieve, obtains pretreatment sepiolite.
5. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（2）It is described pre-
The preparation method for handling aluminium oxide is by alumina powder and water in mass ratio 1：5~1：8 mixing, and add in alumina powder matter
The silane coupling agent KH-560 of 2~3 times of amount after being stirred, is filtered, dry, obtains pretreatment aluminium oxide, the alumina powder
For alpha-type aluminum oxide of the grain size at 0.3~0.6 μm.
6. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（4）The wax
The preparation method of matter mixture is by paraffin and polyethylene wax in mass ratio 3：1~5：1 mixing is described to get wax mixture
Paraffin is mineral wax mixture of the carbon atom number between 20~30.
7. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：The pretreatment nitridation
The preparation method of boron is by boron nitride powder and water in mass ratio 1：5~1：8 mixing, and add in 2~3 times of boron nitride powder quality
Silane coupling agent KH-560, after being stirred, filter, it is dry, obtain pretreatment boron nitride.
8. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（6）It is described full
Preparation method with sodium bicarbonate solution adds to add water in beaker, and by water temperature heating in beaker to 50 DEG C into beaker
Enter sodium bicarbonate, until there is crystal precipitation, filter to get saturated sodium bicarbonate solution.
9. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（8）The glass
Glass fiber cloth is alkali-free glass fiber cloth, and the alkali-free glass fiber cloth thickness is 0.025~0.075mm.
10. a kind of preparation method of high heat conduction mica tape according to claim 1, it is characterised in that：Step（8）The cloud
Female paper unit area is 100~250g/m2, thickness is 0.06~0.12mm.
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Application publication date: 20180615 |