CN108531041A - A kind of preparation method of wear-resisting high viscosity anticorona varinish - Google Patents
A kind of preparation method of wear-resisting high viscosity anticorona varinish Download PDFInfo
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- CN108531041A CN108531041A CN201810396961.7A CN201810396961A CN108531041A CN 108531041 A CN108531041 A CN 108531041A CN 201810396961 A CN201810396961 A CN 201810396961A CN 108531041 A CN108531041 A CN 108531041A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The present invention relates to a kind of preparation methods of wear-resisting high viscosity anticorona varinish, belong to technical field of paint preparation.The invention firstly uses the microorganisms in biogas slurry by the micro- corruption of rice husk,So that rice husk surface carries abundant microcellular structure,Compatibility between resinification product and priming paint epoxy resin in modified silicon carbide and hole is high,The present invention is also using nano-attapulgite as raw material,Itself and vegetable oil are blended,Its resistance is remarkably decreased with the increase for applying electric field strength outside,Utilize this characteristic,Anticorona varinish is made in silicon carbide,Splendid anti-corona effect can be played,And silicon carbide and attapulgite are all heat resistant and wear resistant filler,And modified silicon carbide and attapulgite's surface all carries a large amount of active groups,These active groups can generate Chemical bonding with the active group on enamelled coating surface,Form a fine and close cross-linked structure,Greatly improve the heat-resisting quantity and wear-resisting property of anticorona enamelled coating,It has a extensive future.
Description
Technical field
The present invention relates to a kind of preparation methods of wear-resisting high viscosity anticorona varinish, belong to technical field of paint preparation.
Background technology
Corona discharge is the prominent place of field strength in severe non-uniform electric field（As electrode is sharply located）Local space air ionization and produce
A kind of electric discharge phenomena of raw blue halation.
Anticorona varinish is generally by insulating varnish and non-metal conductor（Carbon black, graphite etc.）Powder mixes, and is mainly used for
High-tension coil makees anticorona varinish, as the higher end turn of voltage in large high-voltage motor.Industrially require anticorona varinish
Surface resistivity stabilization, strong adhesive force, wearability is good, rate of drying is fast, shelf-stable, anticorona varinish can individually be coated in coil table
Face can also be coated in asbestos yarn, on glass tape, in wrapping in coil outer layer, or be coated on glass cloth and major insulation one-pass molding.
One trend of generator development is that voltage class is higher and higher, and capacity is increasing, especially large-scale air cooling machine
Group, this proposes stator winding anticorona material new requirement, and not only single stator bar discharge inception voltage requires higher, and
Stator winding cannot in the process of running due to corona act on and end scaling loss.Meet this requirement a kind of method be exactly
One floor height resistance anticorona varinish of bar end surface brushing after molding, and in one floor height resistance of stator winding end surface spraying
Anticorona varinish.
Current high resistance anticorona varinish that is domestic and using is the dry high resistant anticorona varinish of one-component gas, and paint base is epoxy-ester
Or polyesters gas dried lacquer, they seal container and condition of storage requirement is high, and storage life is short.Simultaneously as be gas dried lacquer,
If overweight coating, or be sprayed on the surface of adsorptivity, then the extremely difficult solidification of bottom anticorona varnish, to extreme influence bar or around
The adhesion and anti-corona performance on group surface.This paint base temperature classification is B grades（130℃）, with bar and winding surface adhesion
It is bad, cure under room temperature it is insufficient, easily fall off in the assembling process of stator bar or in motor operation course due to
Various corrosion cause the ingredient for painting base failure decomposition and improvement end electric potential gradient contained therein being made to be distributed to fall off, to most
Cause winding overhang because of Corona Corrosion scaling loss eventually.Heat-resisting quantity is poor after common anticorona varinish solidification at present, wearability it is low and
Anticorona filler and priming paint poor compatibility, the cohesiveness between enamelled coating and substrate is poor, and enamelled coating is caused to be easy to fall off, and it is anticorona to influence its
Performance.Therefore, a kind of wear-resisting high viscosity anticorona varinish of invention has positive effect to coating dixie cup technical field.
Invention content
Present invention mainly solves the technical issues of, it is poor for heat-resisting quantity after common anticorona varinish solidification at present, it is wear-resisting
Property low and anticorona filler and priming paint poor compatibility, the cohesiveness between enamelled coating and substrate it is poor, cause enamelled coating to be easy to fall off, influence
The defect of its anticorona performance provides a kind of preparation method of wear-resisting high viscosity anticorona varinish.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of preparation method of wear-resisting high viscosity anticorona varinish, it is characterised in that specifically preparation process is：
（1）It dries after weighing rice husk cleaning, is laid in ceramic pot after the rice husk of drying and biogas slurry are mixed, by ceramic pot opening
Be put into greenhouse, stand it is mouldy processing 3~5 days, it is mouldy after sealed ceramic jar, continue standing for fermentation 3~5 days；
（2）Wait for it is above-mentioned take out tunning after fermentation, be separated by filtration to obtain fermentation filter residue, obtained fermentation filter residue put
Enter in vacuum drying oven, carbonize, obtains carbide, then be put into vacuum drying oven after carbide and sodium fluoride are mixed, under protection of argon gas
1100~1200 DEG C are warming up to, heat preservation 3~4h of conversion obtains conversion product；
（3）Above-mentioned conversion product is transferred in high temperature furnace, oxidation processes, it is 30% to use mass fraction after oxidation processes respectively
Hydrofluoric acid solution and deionized water rinse 10~15min, and naturally dry is to get self-control porous silicon carbide after flushing, then incites somebody to action
It is fitted into reaction kettle after self-control porous silicon carbide and the mixing of furfural and phenol, then sodium hydroxide is added into reaction kettle, heated
120~130 DEG C are warming up to, 7~8h, discharging filtering are stirred to react, isolated reaction filter residue is as modified silicon carbide, spare；
（4）Will nano-attapulgite and soybean oil mix after be used as fermentation substrate, fermentation substrate is fitted into fermentation tank, then to hair
Biogas slurry is added in fermentation tank, sealed fermenter is sealed by fermentation；
（5）Wait for it is above-mentioned after fermentation, take out tunning be put into autoclaving tank, high temperature and pressure 2~3h of boiling, boiling knot
It discharges after beam, is separated by filtration to obtain filter residue, after natural drying up to attapulgite modified；
（6）Count in parts by weight, weigh 100~120 parts of epoxy resin, 5~10 parts it is above-mentioned it is attapulgite modified, 35~45 part two
Toluene is fitted into batch mixer, is heated to 100~110 DEG C, is stirred to get priming paint, continues that spare modification is added into batch mixer
10~15min of reaction is stirred at room temperature to get wear-resisting high viscosity anticorona varinish in silicon carbide and polyamide.
Step（1）Described in drying rice husk and biogas slurry mass ratio be 1:2, the temperature in greenhouse is 28~35 DEG C, empty
Gas relative humidity is 60~70%.
Step（2）Described in charing temperature be 200~400 DEG C, carbonization time be 1~2h, carbide and sodium fluoride
Mass ratio be 50:1.
Step（3）Described in the temperature of oxidation processes be 700~800 DEG C, time of oxidation processes is 3~4h, self-control
The mass ratio of porous silicon carbide and furfural and phenol is 1:5:1, the addition of sodium hydroxide is the 1% of furfural quality.
Step（4）Described in nano-attapulgite and soybean oil mass ratio be 1:2, the addition of biogas slurry is fermentation bottom
The temperature of the 5% of amount of substance, sealing and fermenting is 30~35 DEG C, and the time of sealing and fermenting is 10~12 days.
Step（5）Described in the pressure of high temperature and pressure boiling be 1.2~1.5MPa, the temperature of high temperature and pressure boiling is
200~300 DEG C.
Step（6）Described in the addition of spare modified silicon carbide be 3~4 times of priming paint quality, polyamide
Addition is the 40~50% of priming paint quality.
The beneficial effects of the invention are as follows：
（1）The present invention using rice husk as raw material, itself and biogas slurry are blended it is mouldy, then will be mouldy after charred rice husk, porous carbon is made
Porous silicon carbide and furfural, phenol are modified by SiClx under alkaline condition, modified silicon carbide are made, then by nano-attapulgite
Fermentation is blended in soil and soybean oil, obtains attapulgite modified, and attapulgite modified and epoxy blend is finally obtained lacquer,
Up to wear-resisting high viscosity anticorona varinish after incorporating modified silicon carbide, the invention firstly uses the microorganisms in biogas slurry, and rice husk is micro-
It is rotten so that rice husk surface carries abundant microcellular structure, then is carbonized, the obtained porous silicon carbide of pyrolytic conversion, then uses furfural
With phenol as modifying agent, polycondensation under alkaline condition forms furfural resin and is anchored in the hole of silicon carbide and surface, obtains
To modified silicon carbide, the resinification product in modified silicon carbide and hole and the compatibility between priming paint epoxy resin
Height, therefore the compatibility between anticorona filler silicon carbide and priming paint is also improved, promote the enhancing of corona paint cohesive force, to carry
The adhesion strength of high base, it is not easy to fall off；
（2）Itself and vegetable oil are blended also using nano-attapulgite as raw material by the present invention, under the action of biogas slurry microorganism into
Row is rancid, and during rancid, vegetable oil is degraded by microorganisms and generates a large amount of free property ester group, while rancid also generating
Part organic acid, these free ester groups are introduced in nano imvite surface again under the action of microorganism, and the introducing of ester group makes
It obtains nano-attapulgite surface energy to substantially reduce, compatibility improves between epoxy resin-base, and on the other hand rancid generation has
Machine acid under the influence of high pressure and temperature can be by part metals ion chelating in attapulgite so that metal ion leaves attapulgite
Original lattice enters in rancid organic phase, to generate lattice vacancy, the generation of these lattice vacancies in attapulgite's surface
The physics and chemisorption activity for considerably increasing nano-attapulgite, in conjunction with nano-particle grain size is small, large specific surface area
And the big characteristic of atom proportion in superficial layer so that it can adequately adsorb, be bonded with epoxy resin-base, make particle
Chemical bonding between basal body interface increases, and cohesive force is significantly improved, and adhesive strength is enhanced, and stress is conducive to
It transmits, increases the adhesive property of anticorona varinish, and silicon carbide is a kind of semi-conducting material with nonlinear resistance property,
Its resistance is remarkably decreased with the increase for applying electric field strength outside, and using this characteristic, anticorona varinish is made in silicon carbide, can
To play splendid anti-corona effect, and silicon carbide and attapulgite are all heat resistant and wear resistant filler, and modified carbon
SiClx and attapulgite's surface all carry a large amount of active groups, these active groups can be produced with the active group on enamelled coating surface
Biochemical bonding force forms a fine and close cross-linked structure, greatly improves the heat-resisting quantity of anticorona enamelled coating and resistance to
Performance is ground, is had a extensive future.
Specific implementation mode
It is dried after weighing rice husk cleaning, is 1 in mass ratio by the rice husk of drying and biogas slurry:It is laid in ceramic pot after 2 mixing
In, it is 28~35 DEG C that ceramic pot opening, which is put into temperature, in the greenhouse that relative air humidity is 60~70%, stands mouldy processing 3
~5 days, it is mouldy after sealed ceramic jar, continue standing for fermentation 3~5 days；It waits for after fermentation, taking out tunning, filtering
Obtained fermentation filter residue is put into vacuum drying oven by isolated fermentation filter residue, is carbonized 1~2h with 200~400 DEG C of temperature, is obtained
It is 50 in mass ratio to carbide, then by carbide and sodium fluoride:It is put into vacuum drying oven after 1 mixing, heats up under protection of argon gas
To 1100~1200 DEG C, heat preservation 3~4h of conversion obtains conversion product；Conversion product is transferred in high temperature furnace, the oxygen at 700~800 DEG C
Change 3~4h of processing, use respectively after oxidation processes hydrofluoric acid solution that mass fraction is 30% and deionized water rinse 10~
15min, naturally dry is to get self-control porous silicon carbide after flushing, then will make porous silicon carbide and furfural and phenol by oneself
It is 1 in mass ratio:5:It is fitted into reaction kettle after 1 mixing, then the sodium hydroxide of furfural quality 1% is added into reaction kettle, heating rises
Temperature is stirred to react 7~8h, discharging filtering to 120~130 DEG C, and isolated reaction filter residue is as modified silicon carbide, spare；It presses
Mass ratio is 1:2 will be used as fermentation substrate after nano-attapulgite and soybean oil mixing, and fermentation substrate is fitted into fermentation tank, then
The biogas slurry of fermentation substrate quality 5% is added into fermentation tank, sealed fermenter is sealed by fermentation 10~12 days at 30~35 DEG C；It waits for
After fermentation, it takes out tunning to be put into autoclaving tank, is 1.2~1.5MPa in pressure, temperature is 200~300 DEG C
Under conditions of, high temperature and pressure 2~3h of boiling discharges after boiling, is separated by filtration to obtain filter residue, after natural drying up to modified
Attapulgite；Count in parts by weight, weigh 100~120 parts of epoxy resin, 5~10 parts it is above-mentioned it is attapulgite modified, 35~45 parts
Dimethylbenzene is fitted into batch mixer, is heated to 100~110 DEG C, is stirred to get priming paint, continues that priming paint matter is added into batch mixer
Amount 3~4 times spare modified silicon carbide and priming paint quality 40~50% polyamide, be stirred at room temperature reaction 10~
15min is to get wear-resisting high viscosity anticorona varinish.
It is dried after weighing rice husk cleaning, is 1 in mass ratio by the rice husk of drying and biogas slurry:It is laid in ceramic pot after 2 mixing
In, it is 28 DEG C that ceramic pot opening, which is put into temperature, in the greenhouse that relative air humidity is 60%, stands mouldy processing 3 days, mouldy
After sealed ceramic jar, continue standing for fermentation 3 days；It waits for after fermentation, taking out tunning, is separated by filtration to obtain fermentation filter
Obtained fermentation filter residue is put into vacuum drying oven by slag, and 1h is carbonized with 200 DEG C of temperature, obtains carbide, then by carbide and fluorine
It is 50 to change sodium in mass ratio:It is put into vacuum drying oven after 1 mixing, is warming up to 1100 DEG C under protection of argon gas, heat preservation conversion 3h is obtained
Conversion product；Conversion product is transferred in high temperature furnace, the oxidation processes 3h at 700 DEG C, mass fraction is used respectively after oxidation processes
For 30% hydrofluoric acid solution and deionized water rinse 10min, after flushing naturally dry to get self-control porous silicon carbide, then
It is 1 that porous silicon carbide and furfural and phenol will be made by oneself in mass ratio:5:It is fitted into reaction kettle after 1 mixing, then into reaction kettle
The sodium hydroxide of furfural quality 1% is added, is heated to 120 DEG C, is stirred to react 7h, discharging filtering, isolated reaction filter
Slag, as modified silicon carbide are spare；It is 1 in mass ratio:2 will be used as fermentation substrate after nano-attapulgite and soybean oil mixing,
Fermentation substrate is fitted into fermentation tank, then the biogas slurry of fermentation substrate quality 5%, sealed fermenter, at 30 DEG C are added into fermentation tank
It is lower to be sealed by fermentation 10 days；It waits for after fermentation, taking out tunning and being put into autoclaving tank, is 1.2MPa, temperature in pressure
Under conditions of 200 DEG C, high temperature and pressure boiling 2h discharges after boiling, is separated by filtration to obtain filter residue, after natural drying to obtain the final product
It is attapulgite modified；It counts in parts by weight, weighs 100 parts of epoxy resin, 5 parts of above-mentioned attapulgite modified, 35 parts of dimethylbenzene dresses
Enter in batch mixer, be heated to 100 DEG C, stir to get priming paint, continues the spare of 3 times of addition priming paint quality into batch mixer and change
Property silicon carbide and priming paint quality 40% polyamide, be stirred at room temperature reaction 10min it is anticorona to get wear-resisting high viscosity
Paint.
It is dried after weighing rice husk cleaning, is 1 in mass ratio by the rice husk of drying and biogas slurry:It is laid in ceramic pot after 2 mixing
In, it is 30 DEG C that ceramic pot opening, which is put into temperature, in the greenhouse that relative air humidity is 65%, stands mouldy processing 4 days, mouldy
After sealed ceramic jar, continue standing for fermentation 4 days；It waits for after fermentation, taking out tunning, is separated by filtration to obtain fermentation filter
Obtained fermentation filter residue is put into vacuum drying oven by slag, and 1.5h is carbonized with 300 DEG C of temperature, obtains carbide, then by carbide and
Sodium fluoride is 50 in mass ratio:It is put into vacuum drying oven after 1 mixing, is warming up to 1150 DEG C, heat preservation conversion 3.5h under protection of argon gas,
Obtain conversion product；Conversion product is transferred in high temperature furnace, the oxidation processes 3.5h at 750 DEG C, matter is used respectively after oxidation processes
The hydrofluoric acid solution and deionized water flushing 12min that score is 30% are measured, naturally dry is to get self-control porous carbon after flushing
SiClx, then it is 1 that will make porous silicon carbide and furfural and phenol by oneself in mass ratio:5:It is fitted into reaction kettle after 1 mixing, then to anti-
The sodium hydroxide that furfural quality 1% is added in kettle is answered, is heated to 125 DEG C, is stirred to react 7.5h, discharging filtering is isolated
Filter residue is reacted, as modified silicon carbide is spare；It is 1 in mass ratio:2 will be used as hair after nano-attapulgite and soybean oil mixing
Ferment substrate, fermentation substrate is fitted into fermentation tank, then the biogas slurry of fermentation substrate quality 5% is added into fermentation tank, is sealed by fermentation
Tank is sealed by fermentation 11 days at 32 DEG C；It waits for after fermentation, taking out tunning and being put into autoclaving tank, be in pressure
1.4MPa, under conditions of temperature is 250 DEG C, high temperature and pressure boiling 2.5h discharges after boiling, is separated by filtration to obtain filter residue,
After natural drying up to attapulgite modified；It counts in parts by weight, weighs 110 parts of epoxy resin, 7 parts of above-mentioned modified attapulgites
Soil, 40 parts of dimethylbenzene are fitted into batch mixer, are heated to 105 DEG C, are stirred to get priming paint, continue that priming paint is added into batch mixer
Reaction 12min is stirred at room temperature to get resistance in the polyamide of the spare modified silicon carbide and priming paint quality 45% of 3 times of quality
Grind high viscosity anticorona varinish.
It is dried after weighing rice husk cleaning, is 1 in mass ratio by the rice husk of drying and biogas slurry:It is laid in ceramic pot after 2 mixing
In, it is 35 DEG C that ceramic pot opening, which is put into temperature, in the greenhouse that relative air humidity is 70%, stands mouldy processing 5 days, mouldy
After sealed ceramic jar, continue standing for fermentation 5 days；It waits for after fermentation, taking out tunning, is separated by filtration to obtain fermentation filter
Obtained fermentation filter residue is put into vacuum drying oven by slag, and 2h is carbonized with 400 DEG C of temperature, obtains carbide, then by carbide and fluorine
It is 50 to change sodium in mass ratio:It is put into vacuum drying oven after 1 mixing, is warming up to 1200 DEG C under protection of argon gas, heat preservation conversion 4h is obtained
Conversion product；Conversion product is transferred in high temperature furnace, the oxidation processes 4h at 800 DEG C, mass fraction is used respectively after oxidation processes
For 30% hydrofluoric acid solution and deionized water rinse 15min, after flushing naturally dry to get self-control porous silicon carbide, then
It is 1 that porous silicon carbide and furfural and phenol will be made by oneself in mass ratio:5:It is fitted into reaction kettle after 1 mixing, then into reaction kettle
The sodium hydroxide of furfural quality 1% is added, is heated to 130 DEG C, is stirred to react 8h, discharging filtering, isolated reaction filter
Slag, as modified silicon carbide are spare；It is 1 in mass ratio:2 will be used as fermentation substrate after nano-attapulgite and soybean oil mixing,
Fermentation substrate is fitted into fermentation tank, then the biogas slurry of fermentation substrate quality 5%, sealed fermenter, at 35 DEG C are added into fermentation tank
It is lower to be sealed by fermentation 12 days；It waits for after fermentation, taking out tunning and being put into autoclaving tank, is 1.5MPa, temperature in pressure
Under conditions of 300 DEG C, high temperature and pressure boiling 3h discharges after boiling, is separated by filtration to obtain filter residue, after natural drying to obtain the final product
It is attapulgite modified；It counts in parts by weight, weighs 120 parts of epoxy resin, 10 parts of above-mentioned attapulgite modified, 45 parts of dimethylbenzene dresses
Enter in batch mixer, be heated to 110 DEG C, stir to get priming paint, continues the spare of 4 times of addition priming paint quality into batch mixer and change
Property silicon carbide and priming paint quality 50% polyamide, be stirred at room temperature reaction 15min it is anticorona to get wear-resisting high viscosity
Paint.
The wear-resisting high viscosity anticorona varinish that comparative example is produced with Shaanxi company is as a comparison case to produced by the present invention resistance to
The wear-resisting high viscosity anticorona varinish ground in high viscosity anticorona varinish and comparative example carries out performance detection, and testing result is as shown in table 1：
Test method：
Abrasive size test is detected using abrasive grain machinery instrument, and abrasive size is bigger, and wear-resisting property is higher；
Wear-resisting revolution test method：According to national standards, the coating material in example 1~3 and comparative example is spread evenly across modeling
On flitch, with 180 mesh sand paper to the ground board test in example 1~3 and comparative example, every 500 conversion, one, sand paper.It measures last
Wear-resisting revolution；
Heat resistance test is detected by GB/T11021-2007 standards, temperature classification temperature（℃）It is divided into：Y90, A105,
E120, B130, F155, H180；
It is zero level, level-one, two level, three-level, level Four, Pyatyi respectively that the measurement of adhesive force, which is divided into six ranks, and wherein zero level is best,
Pyatyi is worst；
Corona loss power and discharge inception voltage test are pressed《High-voltage technology》Test method is detected.
1 anticorona varinish performance measurement result of table
Good according to the wear-resisting high viscosity anticorona varinish heat-resisting quantity produced by the present invention of data among the above, heat resistance reaches H grades,
Wearability is good, and cohesiveness is good, and enamelled coating is not easily to fall off, and anticorona performance is good, has broad application prospects.
Claims (7)
1. a kind of preparation method of wear-resisting high viscosity anticorona varinish, it is characterised in that specifically preparation process is：
（1）It dries after weighing rice husk cleaning, is laid in ceramic pot after the rice husk of drying and biogas slurry are mixed, by ceramic pot opening
Be put into greenhouse, stand it is mouldy processing 3~5 days, it is mouldy after sealed ceramic jar, continue standing for fermentation 3~5 days；
（2）Wait for it is above-mentioned take out tunning after fermentation, be separated by filtration to obtain fermentation filter residue, obtained fermentation filter residue put
Enter in vacuum drying oven, carbonize, obtains carbide, then be put into vacuum drying oven after carbide and sodium fluoride are mixed, under protection of argon gas
1100~1200 DEG C are warming up to, heat preservation 3~4h of conversion obtains conversion product；
（3）Above-mentioned conversion product is transferred in high temperature furnace, oxidation processes, it is 30% to use mass fraction after oxidation processes respectively
Hydrofluoric acid solution and deionized water rinse 10~15min, and naturally dry is to get self-control porous silicon carbide after flushing, then incites somebody to action
It is fitted into reaction kettle after self-control porous silicon carbide and the mixing of furfural and phenol, then sodium hydroxide is added into reaction kettle, heated
120~130 DEG C are warming up to, 7~8h, discharging filtering are stirred to react, isolated reaction filter residue is as modified silicon carbide, spare；
（4）Will nano-attapulgite and soybean oil mix after be used as fermentation substrate, fermentation substrate is fitted into fermentation tank, then to hair
Biogas slurry is added in fermentation tank, sealed fermenter is sealed by fermentation；
（5）Wait for it is above-mentioned after fermentation, take out tunning be put into autoclaving tank, high temperature and pressure 2~3h of boiling, boiling knot
It discharges after beam, is separated by filtration to obtain filter residue, after natural drying up to attapulgite modified；
（6）Count in parts by weight, weigh 100~120 parts of epoxy resin, 5~10 parts it is above-mentioned it is attapulgite modified, 35~45 part two
Toluene is fitted into batch mixer, is heated to 100~110 DEG C, is stirred to get priming paint, continues that spare modification is added into batch mixer
10~15min of reaction is stirred at room temperature to get wear-resisting high viscosity anticorona varinish in silicon carbide and polyamide.
2. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（1）
Described in drying rice husk and biogas slurry mass ratio be 1:2, the temperature in greenhouse is 28~35 DEG C, relative air humidity is 60~
70%。
3. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（2）
Described in the temperature of charing be 200~400 DEG C, carbonization time is 1~2h, and the mass ratio of carbide and sodium fluoride is 50:1.
4. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（3）
Described in the temperature of oxidation processes be 700~800 DEG C, time of oxidation processes is 3~4h, makes porous silicon carbide and furfural by oneself
And the mass ratio of phenol is 1:5:1, the addition of sodium hydroxide is the 1% of furfural quality.
5. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（4）
Described in nano-attapulgite and soybean oil mass ratio be 1:2, the addition of biogas slurry is the 5% of fermentation substrate quality, sealing
The temperature of fermentation is 30~35 DEG C, and the time of sealing and fermenting is 10~12 days.
6. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（5）
Described in the pressure of high temperature and pressure boiling be 1.2~1.5MPa, the temperature of high temperature and pressure boiling is 200~300 DEG C.
7. a kind of preparation method of wear-resisting high viscosity anticorona varinish according to claim 1, it is characterised in that：Step（6）
Described in the addition of spare modified silicon carbide be 3~4 times of priming paint quality, the addition of polyamide is priming paint quality
40~50%.
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| CN109266179A (en) * | 2018-09-28 | 2019-01-25 | 陈琪峰 | A kind of preparation method of anticorona coating |
| CN112760030A (en) * | 2021-02-01 | 2021-05-07 | 宁波革创新材料科技有限公司 | Wear-resistant high-strength coating and preparation method thereof |
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| CN103160183A (en) * | 2013-04-03 | 2013-06-19 | 哈尔滨理工大学 | Preparation method of nano anticorona varnish |
| CN107162629A (en) * | 2017-05-14 | 2017-09-15 | 吴刚 | A kind of preparation method of foamed ceramics |
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Application publication date: 20180914 |