CN106653255B - A kind of preparation method of High Voltage Outdoor composite insulator outer insulating material - Google Patents
A kind of preparation method of High Voltage Outdoor composite insulator outer insulating material Download PDFInfo
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- CN106653255B CN106653255B CN201610870314.6A CN201610870314A CN106653255B CN 106653255 B CN106653255 B CN 106653255B CN 201610870314 A CN201610870314 A CN 201610870314A CN 106653255 B CN106653255 B CN 106653255B
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
- H01B17/525—Self-cleaning, e.g. by shape or disposition of screens
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Abstract
The invention discloses a kind of preparation method of High Voltage Outdoor composite insulator outer insulating material, belong to electric power field of material technology.The present invention mixes rice husk with flyash, fermented using methane liquid supernatant and consume rice husk organic matter, and metallic element therein is dissolved, after filtered drying, by filter cake high-temperature calcination, fully remove organic matter, modification sol, then the reaction of the acrylate emulsifying liquid with voluntarily preparing is made in gained micro-nano powder again, obtains complex emulsions, and insulator surface is spun on, High Voltage Outdoor composite insulator outer insulating material is obtained after drying.The present invention forms the micro nano structure of imitative lotus leaf surface using micro-nano granules in complex emulsions in insulator surface, while possessing super-hydrophobic effect, can effectively absorb ultraviolet, increase the ageing resistace of insulator, extend the service life of outdoor insulator.
Description
Technical field
The invention discloses a kind of preparation method of High Voltage Outdoor composite insulator outer insulating material, belong to electric power material skill
Art field.
Background technology
Outdoor insulative occupies critical role in whole insulation system, and insulator insulation system out of doors, particularly exists
Outdoor high-voltage insulation system, such as play very important effect in power transformation and distribution system.Because outdoor environment is complicated, because
This, very high performance requirement is proposed to outdoor insulator outer insulating material, such as requires excellent high and low temperature resistance, resistance to purple
Outer ageing properties, resistance to biological corrosion and chemical corrosion resistance and high intensity and high hydrophobicity etc..Insulator presses external insulation used
The difference of material can approximation be divided into porcelain insulator and the non-class of porcelain insulator two.
Ceramics are used as a kind of insulating materials, and its application has had upper one-hundred-year history, and as isolator material, it has stable
The features such as property is good, intensity is high, cost is low, but in recent years, with the development of modern electric power industry, porcelain insulator is in some performances
Aspect gradually exposes defect, is mainly manifested in：Fragility is big, easy fragmentation in processing transport and installation process；Weight is big, and installation needs
Will wherein equipment, and need to build necessary supporting construction；Easily hollow failure etc..
In view of the above problems, people have turned to sight the research and development of non-porcelain insulator.The 1960s with
Come, application of the polymeric material in power industry gradually have received extensive concern, and because it has, in light weight, dielectric properties are excellent
The advantages that good, progressively it is developed in the manufacture of insulator.Polymer insulator, also known as composite insulator, have benefited from gathering
Compound material has relatively low surface energy, therefore can ensure that the surface of insulator has hydrophobicity, makes material in wet condition
Operation is it is also ensured that the electrical characteristic of insulator, in addition, polymeric material also has the characteristics such as lightweight, installation easy maintenance,
Therefore developed rapidly out of doors in high-tension insulator.But at present, composite insulator material weatherability, mechanical strength with
And material compatibility etc. is gone back Shortcomings and strengthened, it is necessary to further improve.
The content of the invention
The present invention solves the technical problem of：Preparing and using for conventional composite insulator outer insulating material
Aging occurs for the surface during outdoor application occurred in journey, reduces material surface hydrophobicity, causes decreasing insulating very
To the problem of triggering flashover fault, there is provided a kind of preparation method of High Voltage Outdoor composite insulator outer insulating material, the present invention
Rice husk is mixed with flyash, is fermented using methane liquid supernatant and consumes rice husk organic matter, and dissolves metallic element therein, is passed through
After filtering drying, by filter cake high-temperature calcination, organic matter is fully removed, then gained micro-nano powder is made modification sol, then with
The acrylate emulsifying liquid reaction voluntarily prepared, obtains complex emulsions, and is spun on insulator surface, obtains after drying
High Voltage Outdoor composite insulator outer insulating material.The present invention is formed imitative using micro-nano granules in complex emulsions in insulator surface
The micro nano structure of lotus leaf surface, while possessing super-hydrophobic effect, ultraviolet can be effectively absorbed, increases the anti-ageing of insulator
Change performance, extend the service life of outdoor insulator.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Weigh 300~500g rice husks successively, 200~300g flyash, be placed in baking oven, in temperature be 105~110
Dried under the conditions of DEG C to constant weight, obtain drying composite, then be transferred in Universalpulverizer, 325~400 mesh sieves are crossed after crushing,
Obtain mixed-powder；
（2）1~2L methane liquids are measured, are centrifuged, remove lower sediment thing, collect supernatant liquor, and be transferred to hair
In fermentation tank, the above-mentioned gained mixed-powders of 300~400g are added, 30~50mL mass fractions are 6~8% citric acid solutions, Yu Wen
Spend for 35~38 DEG C, under the conditions of rotating speed is 120~160r/min, constant-temperature enclosed fermentation 3~5 days, filters, remove filtrate, spend
Ion water washing filter cake, until cleaning solution is in neutrality；
（3）Filter cake after above-mentioned washing is transferred in baking oven, dried under the conditions of being 105~110 DEG C in temperature to constant weight, then
Dried filter cake is placed in Muffle furnace, nitrogen is passed through into stove with 3~5mL/min speed, under nitrogen guard mode, with
6~8 DEG C/min speed is warming up to 600~680 DEG C, insulation 45~60min of calcining, cools to room temperature with the furnace, produces micro-nano mixed
Close powder；
（4）In the three-necked flask of belt stirrer, 1~2g lauryl sodium sulfate, the above-mentioned gained of 40~50g are sequentially added
Micro-nano mixed-powder, 150~200mL deionized waters, regulation speed of agitator to 400~500r/min, under stirring, drop
It is 3~5% hydrochloric acid to add mass fraction, adjusts pH to 6.0~6.4,4~8gKH-570 is added, then with 600~800r/min
Rotating speed is stirred 8~10h, obtains modification sol, standby；
（5）It is 4~6% allyloxy nonyl phenol ether ammonium sulfate solution to measure 100~120mL mass fractions, adds band stirring
In the three-necked flask of device, setting speed of agitator then weighs 30~35g methyl methacrylates successively to 1000~1200r/min
Ester, 30~35g butyl acrylates, 2~3g acrylic acid, after being well mixed, under stirring, three are added dropwise to by dropping funel
In mouth flask, control and dripped off in 10~15min, wait to be added dropwise, continue high-speed stirred and mix 8~10min, obtain emulsion；
（6）15~20mL steps are measured successively（4）Standby modification sol, 8~10mL mass fractions are 2~4% potassium peroxydisulfates
Solution, adding in four-hole boiling flask, then flask is placed in digital display and tested the speed in constant temperature blender with magnetic force, design temperature is 80~85 DEG C,
Speed of agitator is 480~500r/min, and under constant temperature stirring, the emulsion droplet as obtained by dropping funel will be above-mentioned adds to four
In mouth flask, control and dripped off in 2~4h, wait to be added dropwise, continue insulated and stirred and react 60~90min, after naturally cool to
Room temperature, dropwise addition mass fraction are 10~15% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；
（7）3~5 insulators are taken, it is using sol evenning machine that above-mentioned gained is compound through manually being cleaned 3~5 times with absolute ethyl alcohol
Emulsion is spun on insulator surface, then insulator is put into vacuum drying chamber, under the conditions of temperature is 55~60 DEG C, dries 15
~30min, produce High Voltage Outdoor composite insulator outer insulating material.
The physical property of the present invention：The specific insulation of High Voltage Outdoor composite insulator outer insulating material is obtained by of the invention
8.8×1012~9.2 × 1012, dc breakdown voltage is 40~45kV/mm, be resistant to 8000~10000h power for 400W with
Upper ultraviolet irradiation.
The beneficial effects of the invention are as follows：
（1）Gained High Voltage Outdoor composite insulator outer insulating material of the invention can still keep good under ultraviolet light
Stability, there is excellent uvioresistant performance, effectively increase the weatherability of insulator, extend outdoor insulator uses the longevity
Life；
（2）The present invention utilizes bionics principle, constructs imitative lotus leaf surface structure in insulator surface, has resistant automatically cleaning
Function, it can be promoted the use of as insulator outer insulating material.
Embodiment
Weigh 300~500g rice husks successively, 200~300g flyash, be placed in baking oven, in temperature be 105~110 DEG C of bars
Dried under part to constant weight, obtain drying composite, then be transferred in Universalpulverizer, 325~400 mesh sieves are crossed after crushing, are obtained mixed
Close powder；1~2L methane liquids are measured, are centrifuged, remove lower sediment thing, collect supernatant liquor, and be transferred to fermentation tank
In, the above-mentioned gained mixed-powders of 300~400g are added, 30~50mL mass fractions are 6~8% citric acid solutions, are in temperature
35~38 DEG C, under the conditions of rotating speed is 120~160r/min, constant-temperature enclosed fermentation 3~5 days, filters, remove filtrate, use deionization
Water washing filter cake, until cleaning solution is in neutrality；Filter cake after above-mentioned washing is transferred in baking oven, in temperature be 105~110 DEG C of bars
Drying is placed in Muffle furnace to constant weight, then by dried filter cake under part, and nitrogen is passed through into stove with 3~5mL/min speed,
Under nitrogen guard mode, 600~680 DEG C are warming up to 6~8 DEG C/min speed, insulation 45~60min of calcining, is cooled to the furnace
Room temperature, produce micro-nano mixed-powder；In the three-necked flask of belt stirrer, 1~2g lauryl sodium sulfate is sequentially added, 40
The micro-nano mixed-powder of the above-mentioned gained of~50g, 150~200mL deionized waters, regulation speed of agitator to 400~500r/min,
Under stirring, dropwise addition mass fraction is 3~5% hydrochloric acid, adjust pH to 6.0~6.4, add 4~8gKH-570, then with
600~800r/min rotating speeds are stirred 8~10h, obtain modification sol, standby；100~120mL mass fractions are measured as 4~6%
Allyloxy nonyl phenol ether ammonium sulfate solution, is added in the three-necked flask of belt stirrer, and setting speed of agitator to 1000~
1200r/min, 30~35g methyl methacrylates are then weighed successively, 30~35g butyl acrylates, 2~3g acrylic acid, are mixed
After closing uniformly, under stirring, it is added dropwise to by dropping funel in three-necked flask, controls and dripped off in 10~15min, wait to drip
Add it is complete, continue high-speed stirred mix 8~10min, obtain emulsion；The standby modification sols of 15~20mL, 8~10mL are measured successively
Mass fraction is 2~4% potassium persulfate solutions, is added in four-hole boiling flask, then flask is placed in into digital display and tested the speed constant temperature blender with magnetic force
In, design temperature is 80~85 DEG C, and speed of agitator is 480~500r/min, will by dropping funel under constant temperature stirring
Above-mentioned gained emulsion droplet is added in four-hole boiling flask, is controlled and is dripped off in 2~4h, waits to be added dropwise, and continues insulated and stirred reaction
60~90min, after naturally cool to room temperature, dropwise addition mass fraction is 10~15% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；
3~5 insulators are taken, through manually being cleaned 3~5 times with absolute ethyl alcohol, are spun on above-mentioned gained complex emulsions using sol evenning machine
Insulator surface, then insulator is put into vacuum drying chamber, under the conditions of temperature is 55~60 DEG C, 15~30min is dried, i.e.,
Obtain High Voltage Outdoor composite insulator outer insulating material.
Example 1
300g rice husks are weighed successively, 200g flyash, are placed in baking oven, are dried under the conditions of being 105 DEG C in temperature to constant weight,
Drying composite is obtained, then is transferred in Universalpulverizer, 325 mesh sieves are crossed after crushing, obtain mixed-powder；1L methane liquids are measured,
Centrifuge, remove lower sediment thing, collect supernatant liquor, and be transferred in fermentation tank, add the above-mentioned gained of 300g and mix
Powder is closed, 30mL mass fractions are 6~8% citric acid solutions, are 35 DEG C in temperature, under the conditions of rotating speed is 120r/min, constant temperature is close
Fermentation 3 days is closed, is filtered, filtrate is removed, filter cake is washed with deionized, until cleaning solution is in neutrality；By the filter after above-mentioned washing
Cake is transferred in baking oven, is dried under the conditions of being 105 DEG C in temperature and is placed in constant weight, then by dried filter cake in Muffle furnace, with
3mL/min speed is passed through nitrogen into stove, under nitrogen guard mode, is warming up to 600 DEG C with 6 DEG C/min speed, insulation calcining
45min, cool to room temperature with the furnace, produce micro-nano mixed-powder；In the three-necked flask of belt stirrer, 1g 12 is sequentially added
Sodium alkyl sulfate, the micro-nano mixed-powder of the above-mentioned gained of 40g, 150mL deionized waters, regulation speed of agitator to 400r/min,
Under stirring, dropwise addition mass fraction is 3% hydrochloric acid, adjusts pH to 6, adds 4gKH-570, then stirred with 600r/min rotating speeds
Mixing 8h is mixed, obtains modification sol, it is standby；It is 4% allyloxy nonyl phenol ether ammonium sulfate solution to measure 100mL mass fractions, is added
In the three-necked flask of belt stirrer, setting speed of agitator to 1000r/min, 30g methyl methacrylates are then weighed successively,
30g butyl acrylates, 2g acrylic acid, after being well mixed, under stirring, it is added dropwise to by dropping funel in three-necked flask,
Control drips off in 10min, waits to be added dropwise, and continues high-speed stirred mixing 8min, obtains emulsion；Measure that 15mL is standby to be changed successively
Property colloidal sol, 8mL mass fractions are 2% potassium persulfate solution, are added in four-hole boiling flask, then flask is placed in into digital display and tested the speed constant temperature magnetic
In power agitator, design temperature is 80 DEG C, speed of agitator 480r/min, will by dropping funel under constant temperature stirring
Above-mentioned gained emulsion droplet is added in four-hole boiling flask, is controlled and is dripped off in 2h, waits to be added dropwise, and continues insulated and stirred reaction
60min, after naturally cool to room temperature, dropwise addition mass fraction is 10% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；Take 3 absolutely
Edge, through manually being cleaned 3 times with absolute ethyl alcohol, above-mentioned gained complex emulsions are spun on insulator surface using sol evenning machine, then
Insulator is put into vacuum drying chamber, under the conditions of temperature is 55 DEG C, 15min is dried, produces High Voltage Outdoor composite insulator
Outer insulating material.
The specific insulation of gained High Voltage Outdoor composite insulator outer insulating material of the invention is 8.8 × 1012, direct current hits
It is 40kV/mm to wear voltage, is resistant to 8000h power and is irradiated for more than 400W ultraviolets.
Example 2
400g rice husks are weighed successively, 260g flyash, are placed in baking oven, are dried under the conditions of being 108 DEG C in temperature to constant weight,
Drying composite is obtained, then is transferred in Universalpulverizer, 350 mesh sieves are crossed after crushing, obtain mixed-powder；Measure 1.5L biogas
Liquid, centrifuge, remove lower sediment thing, collect supernatant liquor, and be transferred in fermentation tank, add the above-mentioned gained of 350g
Mixed-powder, 45mL mass fractions are 7% citric acid solution, are 36 DEG C in temperature, under the conditions of rotating speed is 140r/min, constant temperature is close
Fermentation 4 days is closed, is filtered, filtrate is removed, filter cake is washed with deionized, until cleaning solution is in neutrality；By the filter after above-mentioned washing
Cake is transferred in baking oven, is dried under the conditions of being 108 DEG C in temperature and is placed in constant weight, then by dried filter cake in Muffle furnace, with
4mL/min speed is passed through nitrogen into stove, under nitrogen guard mode, is warming up to 650 DEG C with 7 DEG C/min speed, insulation calcining
50min, cool to room temperature with the furnace, produce micro-nano mixed-powder；In the three-necked flask of belt stirrer, add 1.5g 12 successively
Sodium alkyl sulfate, the micro-nano mixed-powder of the above-mentioned gained of 45g, 180mL deionized waters, regulation speed of agitator to 450r/min,
Under stirring, dropwise addition mass fraction is 4% hydrochloric acid, adjusts pH to 6.2,6gKH-570 is added, then with 700r/min rotating speeds
9h is stirred, obtains modification sol, it is standby；It is 5% allyloxy nonyl phenol ether ammonium sulfate solution to measure 110mL mass fractions, is added
In the three-necked flask for entering belt stirrer, setting speed of agitator to 1100r/min, 32g methyl methacrylates are then weighed successively,
32g butyl acrylates, 2.8g acrylic acid, after being well mixed, under stirring, three-necked flask is added dropwise to by dropping funel
In, control and dripped off in 12min, wait to be added dropwise, continue high-speed stirred mixing 9min, obtain emulsion；It is standby that 18mL is measured successively
With modification sol, 9mL mass fractions are 3% potassium persulfate solution, are added in four-hole boiling flask, then flask is placed in into digital display and tested the speed perseverance
In warm magnetic stirring apparatus, design temperature is 82 DEG C, speed of agitator 490r/min, under constant temperature stirring, is leaked by dropping liquid
Bucket adds to above-mentioned gained emulsion droplet in four-hole boiling flask, controls and is dripped off in 3h, waits to be added dropwise, and continues insulated and stirred reaction
80min, after naturally cool to room temperature, dropwise addition mass fraction is 12% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；Take 4 absolutely
Edge, through manually being cleaned 4 times with absolute ethyl alcohol, above-mentioned gained complex emulsions are spun on insulator surface using sol evenning machine, then
Insulator is put into vacuum drying chamber, under the conditions of temperature is 58 DEG C, 20min is dried, produces High Voltage Outdoor composite insulator
Outer insulating material.
The specific insulation of gained High Voltage Outdoor composite insulator outer insulating material of the invention is 9 × 1012, dc breakdown
Voltage is 42kV/mm, is resistant to 9000h power and is irradiated for more than 400W ultraviolets.
Example 3
500g rice husks are weighed successively, 300g flyash, are placed in baking oven, are dried under the conditions of being 110 DEG C in temperature to constant weight,
Drying composite is obtained, then is transferred in Universalpulverizer, 400 mesh sieves are crossed after crushing, obtain mixed-powder；2L methane liquids are measured,
Centrifuge, remove lower sediment thing, collect supernatant liquor, and be transferred in fermentation tank, add the above-mentioned gained of 400g and mix
Powder is closed, 50mL mass fractions be 8% citric acid solution, are 38 DEG C in temperature, rotating speed is constant-temperature enclosed under the conditions of 160r/min
Fermentation 5 days, filter, remove filtrate, filter cake is washed with deionized, until cleaning solution is in neutrality；By the filter cake after above-mentioned washing
It is transferred in baking oven, dries under the conditions of being 110 DEG C in temperature and be placed in constant weight, then by dried filter cake in Muffle furnace, with 5mL/
Min speed is passed through nitrogen into stove, under nitrogen guard mode, is warming up to 680 DEG C with 8 DEG C/min speed, insulation calcining
60min, cool to room temperature with the furnace, produce micro-nano mixed-powder；In the three-necked flask of belt stirrer, 2g 12 is sequentially added
Sodium alkyl sulfate, the micro-nano mixed-powder of the above-mentioned gained of 50g, 200mL deionized waters, regulation speed of agitator to 500r/min,
Under stirring, dropwise addition mass fraction is 5% hydrochloric acid, adjusts pH to 6.4,8gKH-570 is added, then with 800r/min rotating speeds
10h is stirred, obtains modification sol, it is standby；It is 6% allyloxy nonyl phenol ether ammonium sulfate solution to measure 120mL mass fractions,
Add in the three-necked flask of belt stirrer, setting speed of agitator then weighs 35g methyl methacrylates successively to 1200r/min
Ester, 35g butyl acrylates, 3g acrylic acid, after being well mixed, under stirring, three-necked flask is added dropwise to by dropping funel
In, control and dripped off in 15min, wait to be added dropwise, continue high-speed stirred mixing 10min, obtain emulsion；It is standby that 20mL is measured successively
With modification sol, 10mL mass fractions are 4% potassium persulfate solution, are added in four-hole boiling flask, then flask is placed in into digital display and tested the speed perseverance
In warm magnetic stirring apparatus, design temperature is 85 DEG C, speed of agitator 500r/min, under constant temperature stirring, is leaked by dropping liquid
Bucket adds to above-mentioned gained emulsion droplet in four-hole boiling flask, controls and is dripped off in 4h, waits to be added dropwise, and continues insulated and stirred reaction
90min, after naturally cool to room temperature, dropwise addition mass fraction is 15% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；Take 5 absolutely
Edge, through manually being cleaned 5 times with absolute ethyl alcohol, above-mentioned gained complex emulsions are spun on insulator surface using sol evenning machine, then
Insulator is put into vacuum drying chamber, under the conditions of temperature is 60 DEG C, 30min is dried, produces High Voltage Outdoor composite insulator
Outer insulating material.
The specific insulation of gained High Voltage Outdoor composite insulator outer insulating material of the invention is 9.2 × 1012, direct current hits
It is 45kV/mm to wear voltage, is resistant to 10000h power and is irradiated for more than 400W ultraviolets.
Claims (1)
1. a kind of preparation method of High Voltage Outdoor composite insulator outer insulating material, it is characterised in that specifically preparation process is：
（1）Weigh 300~500g rice husks successively, 200~300g flyash, be placed in baking oven, in temperature be 105~110 DEG C of bars
Dried under part to constant weight, obtain drying composite, then be transferred in Universalpulverizer, 325~400 mesh sieves are crossed after crushing, are obtained mixed
Close powder；
（2）1~2L methane liquids are measured, are centrifuged, remove lower sediment thing, collect supernatant liquor, and be transferred to fermentation tank
In, the above-mentioned gained mixed-powders of 300~400g are added, 30~50mL mass fractions are 6~8% citric acid solutions, are in temperature
35~38 DEG C, under the conditions of rotating speed is 120~160r/min, constant-temperature enclosed fermentation 3~5 days, filters, remove filtrate, use deionization
Water washing filter cake, until cleaning solution is in neutrality；
（3）Filter cake after above-mentioned washing is transferred in baking oven, dried under the conditions of being 105~110 DEG C in temperature to constant weight, then will be dry
Filter cake after dry is placed in Muffle furnace, nitrogen is passed through into stove with 3~5mL/min speed, under nitrogen guard mode, with 6~8
DEG C/min speed is warming up to 600~680 DEG C, insulation 45~60min of calcining, cool to room temperature with the furnace, produce micro-nano mixed powder
End；
（4）In the three-necked flask of belt stirrer, 1~2g lauryl sodium sulfate, the above-mentioned gained micro-nanos of 40~50g are sequentially added
Rice mixed-powder, 150~200mL deionized waters, regulation speed of agitator to 400~500r/min, under stirring, matter is added dropwise
Amount fraction is 3~5% hydrochloric acid, adjusts pH to 6.0~6.4,4~8gKH-570 is added, then with 600~800r/min rotating speeds
8~10h is stirred, obtains modification sol, it is standby；
（5）It is 4~6% allyloxy nonyl phenol ether ammonium sulfate solution to measure 100~120mL mass fractions, adds belt stirrer
In three-necked flask, setting speed of agitator then weighs 30~35g methyl methacrylates to 1000~1200r/min successively, and 30
~35g butyl acrylates, 2~3g acrylic acid, after being well mixed, under stirring, three mouthfuls of burnings are added dropwise to by dropping funel
In bottle, control and dripped off in 10~15min, wait to be added dropwise, continue high-speed stirred and mix 8~10min, obtain emulsion；
（6）15~20mL steps are measured successively（4）Standby modification sol, 8~10mL mass fractions are that 2~4% potassium peroxydisulfates are molten
Liquid, add in four-hole boiling flask, then flask is placed in digital display and tested the speed in constant temperature blender with magnetic force, design temperature is 80~85 DEG C, is stirred
Mix rotating speed is 480~500r/min, and under constant temperature stirring, the emulsion droplet as obtained by dropping funel will be above-mentioned adds to four mouthfuls
In flask, control and dripped off in 2~4h, wait to be added dropwise, continue insulated and stirred and react 60~90min, after naturally cool to room
Temperature, dropwise addition mass fraction are 10~15% ammoniacal liquor, and pH is to neutrality for regulation, obtains complex emulsions；
（7）3~5 insulators are taken, through manually being cleaned 3~5 times with absolute ethyl alcohol, using sol evenning machine by above-mentioned gained complex emulsions
Insulator surface is spun on, then insulator is put into vacuum drying chamber, under the conditions of temperature is 55~60 DEG C, dry 15~
30min, produce High Voltage Outdoor composite insulator outer insulating material.
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| CN112406239A (en) * | 2020-10-16 | 2021-02-26 | 西南计算机有限责任公司 | Military power equipment insulator and preparation method thereof |
| CN112863784B (en) * | 2021-01-19 | 2021-08-27 | 湖南兴诚电瓷电器有限公司 | High-strength composite porcelain knob insulator for high-voltage line and preparation method thereof |
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