CN106117859A - A kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material - Google Patents
A kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material Download PDFInfo
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- CN106117859A CN106117859A CN201610632192.7A CN201610632192A CN106117859A CN 106117859 A CN106117859 A CN 106117859A CN 201610632192 A CN201610632192 A CN 201610632192A CN 106117859 A CN106117859 A CN 106117859A
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- C—CHEMISTRY; METALLURGY
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
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- C—CHEMISTRY; METALLURGY
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
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Abstract
The invention discloses a kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material, belong to the preparation field of switching material.The best for current switching material quality, and there is insulating properties and the undesirable defect of fire resistance, it is provided that a kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material.The present invention is first with silane coupler, ball milling is carried out after the mix homogeneously such as Kaolin, it is dried, prepare modified kaolin, with surfactant, brucite is modified again, wash dried and modified kaolin, glass dust is placed in ball grinds in ball grinder, last and polystyrene mixing granulator, preparing can porcelainization fire-resistant electrical equipment switching material, containing substantial amounts of alumina composition in the Kaolin added in the present invention, part can be with the oxygen reaction in air, generate one layer of fine and close aluminum oxide film and cover the material surface in being exposed to air, and aluminium oxide has mechanical strength height, hardness is big, high temperature resistant and insulating properties are preferable, there is prospect of the application widely.
Description
Technical field
The invention discloses a kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material, belong to the preparation neck of switching material
Territory.
Background technology
In recent years, the fire frequently occurred causes heavy losses to the lives and properties of people.In fire generating process
Ensure the unimpeded of the equipment such as elevator, illuminator, communication system, whistle control system in certain time and close for reducing people
The injures and deaths of member and the loss of lives and properties have great importance.When fire occurs, switching material needs to bear 300 DEG C for a long time
To the high temperature of 1000 DEG C, common switching material is under these conditions it is difficult to ensure that the normal of it uses.Fire-resistant switching material quilt
It is widely used in important department and the public places such as skyscraper, subway, power plant, nuclear power station, and in recent years, this field starts
Tending to fire-resistant demand, in order to when fire occurs, power supply unit and circuit can keep the properly functioning of certain time, help
Carrying out in rescue work, reduces casualties and property loss as far as possible.
Current traditional switching material mainly has PVC, PC, PET three major types.Although polyvinyl chloride switching material resistance toization
Corrosivity is preferable, but it is high temperature resistant and light fastness is poor, and Merlon point is higher, the little insulating properties of water absorption,
Shock resistance and resistance to ag(e)ing are the best, but resistance to maximum temperature only has 150 DEG C,
Polyethylene terephthalate electrical insulating property is excellent, and even under high-temperature high-frequency, its electrical property is still preferable, but Inverter fed motor
Property is poor, and creep resistance equally exists the defect of non-refractory.Can porcelain fire-resistant silicon rubber material be with silicone rubber for matrix material
Material, adds reinforced filling, constitution controller and special Vitrified powder and porcelain auxiliary agent, through vacuum kneading, mixing, makes glue
Material, the sintering through thermal-flame forms hard ceramic protective layer, can, open circuit the most short-circuit with protection circuit, thus ensure
Circuit unobstructed, for life and the rescue of property of personnel, has won the time to greatest extent.Can porcelain SiClx rubber be a kind of
Novel fire-resistant composite, its refractory mechanism and tradition refractory material are different, and high temperature when being to utilize fire to occur makes silicon
The residual ashes formed after rubber combustion forms one layer and had the insulated fireproof pottery of certain mechanical strength once, utilizes the pottery formed
Enamel coating delays or stops the damage to internal components of flame and high temperature.This refractory mechanism makes can porcelain SiClx rubber fire proofed wood
The advantages such as material production cost is low, lightweight, pliability is preferable, thus enjoy the concern of people.But the most traditional switching material
The switching device surface quality made is the best, the phenomenon of surface breakdown easily occurs, and insulating properties and fire resistance are paid no attention to
Think.
Summary of the invention
The technical problem that present invention mainly solves: the best for current switching material quality, and exist insulating properties and
The defect that fire resistance is undesirable, it is provided that a kind of can the preparation method of porcelainization fire-resistant electrical equipment switching material.The present invention first uses silicon
Carry out ball milling after the mix homogeneously such as alkane coupling agent, Kaolin, be dried, prepare modified kaolin, then with surfactant to neatly
Stone is modified, and washing is dried and modified kaolin, glass dust are placed in ball grinds in ball grinder, and last and polystyrene mixes
Refining pelletize, prepare can porcelainization fire-resistant electrical equipment switching material, containing substantial amounts of alumina composition in the Kaolin added in the present invention,
Part can generate one layer of fine and close aluminum oxide film cover the material list in being exposed to air with the oxygen reaction in air
Face, and aluminium oxide to have mechanical strength high, hardness is big, high temperature resistant and insulating properties preferable, has prospect of the application widely.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
(1) measuring 100 ~ 120mL mass fraction is that 95% ethanol solution adds in beaker, and regulates ethanol solution pH with glacial acetic acid
It is 3.0 ~ 4.0, adds 2 ~ 2.4g Silane coupling reagent KH-570, stir 20 ~ 30min with 300 ~ 400r/min, add in beaker
100 ~ 120g Kaolin, 1.5 ~ 1.6g sodium hexameta phosphate, continues stirring 30 ~ 40min, obtains mixed liquor, mixed liquor is proceeded to ball milling
In tank, add 800 ~ 900g zirconium oxide bead, be placed in ball mill after ball milling 2 ~ 3h, add 105 ~ 110 DEG C of drying baker are dried to
Constant weight, obtains modified kaolin, standby；
(2) weigh 20 ~ 25g brucite, add in 180 ~ 225mL deionized water, with 300 ~ 400r/min stirring mixing 15 ~
20min, adds 5 ~ 6g dodecylbenzene sodium sulfonate, 5 ~ 6g tween 80, continues stirring 30 ~ 40min under 80 ~ 90 DEG C of oil baths,
Mixed slurry, by mixed slurry sucking filtration, and is washed with deionized filter cake 3 ~ 5 times, proceed to 105 ~ 110 DEG C of drying baker are dried to
Constant weight, obtains modified hydrotalcite；
(3) modified kaolin prepared by 50 ~ 60g above-mentioned steps (1), the above-mentioned modified hydrotalcite of 18 ~ 20g, 5 ~ 8g glass are weighed respectively
Glass powder, after mix homogeneously, loads in ball grinder, adds 800 ~ 900g zirconium oxide bead, 30 ~ 50mL dehydrated alcohol, be placed in ball mill
After middle ball milling 2 ~ 3h, proceed to 105 ~ 110 DEG C of drying baker are dried to constant weight, obtain composite powder；
(4) weigh 50 ~ 60g polystyrene and be placed in mill 3 ~ 5min in 40 ~ 50 DEG C of banburies, add above-mentioned composite powder, heat up
To 150 ~ 170 DEG C, stir 5 ~ 8min with 100 ~ 200r/min, obtain compound, inject a mixture into pelletize in comminutor, be cooled to
Room temperature, obtaining can porcelainization fire-resistant electrical equipment switching material.
The physical property of the present invention is: the present invention prepare can porcelainization fire-resistant electrical equipment switching material energy gap be 1.1～
1.4eV, critical breakdown electric field is 30～90 × 105V/cm, electron mobility is 1500～4000cm2/ V s, hole mobility
It is 150～600cm2/ V s, dielectric constant 10～12, insulating properties are preferable, and resistance to 600～800 DEG C of high temperature extend 3 service life
～5 years.
The invention has the beneficial effects as follows:
(1) present invention prepare can porcelainization fire-resistant electrical equipment switching material, be resistant to 600～800 DEG C of high temperature, relatively traditional switch material
Heat resistance improves 4～5 times, extends 3～5 years service life；
(2) the inventive method is the most easily operated, and operating process is simple, and operating condition is easily controllable.
Detailed description of the invention
First measuring 100 ~ 120mL mass fraction is that 95% ethanol solution adds in beaker, and molten with glacial acetic acid regulation ethanol
Liquid pH is 3.0 ~ 4.0, adds 2 ~ 2.4g Silane coupling reagent KH-570, stirs 20 ~ 30min with 300 ~ 400r/min, in beaker
Add 100 ~ 120g Kaolin, 1.5 ~ 1.6g sodium hexameta phosphate, continue stirring 30 ~ 40min, obtain mixed liquor, mixed liquor is proceeded to
In ball grinder, add 800 ~ 900g zirconium oxide bead, be placed in ball mill after ball milling 2 ~ 3h, add in 105 ~ 110 DEG C of drying baker dry
Dry to constant weight, obtain modified kaolin, standby；Weigh 20 ~ 25g brucite, add in 180 ~ 225mL deionized water, with 300 ~
400r/min stirs mixing 15 ~ 20min, adds 5 ~ 6g dodecylbenzene sodium sulfonate, and 5 ~ 6g tween 80, under 80 ~ 90 DEG C of oil baths
Continue stirring 30 ~ 40min, obtain mixed slurry, by mixed slurry sucking filtration, and be washed with deionized filter cake 3 ~ 5 times, proceed to 105 ~
110 DEG C of drying baker are dried to constant weight, obtain modified hydrotalcite；Weigh the modified kaolin of the above-mentioned preparation of 50 ~ 60g respectively, 18 ~
The above-mentioned modified hydrotalcite of 20g, 5 ~ 8g glass dust, after mix homogeneously, load in ball grinder, addition 800 ~ 900g zirconium oxide bead, 30 ~
50mL dehydrated alcohol, is placed in ball mill after ball milling 2 ~ 3h, proceeds to be dried to constant weight in 105 ~ 110 DEG C of drying baker, obtain composite powder
Material；Weigh 50 ~ 60g polystyrene and be placed in mill 3 ~ 5min in 40 ~ 50 DEG C of banburies, add above-mentioned composite powder, be warming up to 150
~ 170 DEG C, stir 5 ~ 8min with 100 ~ 200r/min, obtain compound, inject a mixture into pelletize in comminutor, be cooled to room temperature,
Obtaining can porcelainization fire-resistant electrical equipment switching material.
Example 1
First measuring 100mL mass fraction is that 95% ethanol solution adds in beaker, and with glacial acetic acid regulation ethanol solution pH is
3.0, add 2g Silane coupling reagent KH-570, stir 20min with 300r/min, in beaker, add 100g Kaolin, 1.5g six
Polymeric sodium metaphosphate., continues stirring 30min, obtains mixed liquor, proceeded to by mixed liquor in ball grinder, add 800g zirconium oxide bead, be placed in ball
In grinding machine after ball milling 2h, add in 105 DEG C of drying baker and be dried to constant weight, obtain modified kaolin, standby；Weigh 20g brucite, add
Enter in 180mL deionized water, stir with 300r/min and mix 15min, addition 5g dodecylbenzene sodium sulfonate, 5g tween 80,
Continue stirring 30min under 80 DEG C of oil baths, obtain mixed slurry, by mixed slurry sucking filtration, and be washed with deionized filter cake 3 times, turn
Enter in 105 DEG C of drying baker and be dried to constant weight, obtain modified hydrotalcite；Weigh the modified kaolin of the above-mentioned preparation of 50g respectively, on 18g
State modified hydrotalcite, 5g glass dust, after mix homogeneously, load in ball grinder, addition 800g zirconium oxide bead, 30mL dehydrated alcohol,
It is placed in ball mill after ball milling 2h, proceeds to 105 DEG C of drying baker are dried to constant weight, obtain composite powder；Weigh 50g polystyrene to put
Mill 3min in 40 DEG C of banburies, adds above-mentioned composite powder, is warming up to 150 DEG C, stirs 5min with 100r/min, obtains mixing
Material, injects a mixture into pelletize in comminutor, is cooled to room temperature, and obtaining can porcelainization fire-resistant electrical equipment switching material.
The physical property of the present invention is: what the present invention prepared can porcelainization fire-resistant electrical equipment switching material energy gap be 1.1eV,
Critical breakdown electric field is 30 × 105V/cm, electron mobility is 1500cm2/ V s, hole mobility is 150cm2/ V s, is situated between
Electric constant 10, insulating properties are preferable, and resistance to 600 DEG C of high temperature extend 3 years service life.
Example 2
First measuring 110mL mass fraction is that 95% ethanol solution adds in beaker, and with glacial acetic acid regulation ethanol solution pH is
3.5, add 2.2g Silane coupling reagent KH-570, stir 25min with 350r/min, in beaker, add 150g Kaolin, 1.55g
Sodium hexameta phosphate, continues stirring 35min, obtains mixed liquor, proceeded to by mixed liquor in ball grinder, add 850g zirconium oxide bead, be placed in
In ball mill after ball milling 2.5h, add in 107 DEG C of drying baker and be dried to constant weight, obtain modified kaolin, standby；Weigh 23g neatly
Stone, adds in 200mL deionized water, with 350r/min stirring mixing 17min, adds 5.5g dodecylbenzene sodium sulfonate, 5.5g
Tween 80, continues stirring 35min under 85 DEG C of oil baths, obtains mixed slurry, by mixed slurry sucking filtration, and be washed with deionized
Filter cake 4 times, proceeds to be dried to constant weight in 107 DEG C of drying baker, obtains modified hydrotalcite；Weigh the modified high of the above-mentioned preparation of 55g respectively
Ridge soil, the above-mentioned modified hydrotalcite of 19g, 7g glass dust, after mix homogeneously, load in ball grinder, add 850g zirconium oxide bead, 40mL
Dehydrated alcohol, is placed in ball mill after ball milling 2.5h, proceeds to be dried to constant weight in 107 DEG C of drying baker, obtain composite powder；Weigh
55g polystyrene is placed in mill 4min in 45 DEG C of banburies, adds above-mentioned composite powder, is warming up to 160 DEG C, stirs with 150r/min
Mixing 7min, obtain compound, inject a mixture into pelletize in comminutor, be cooled to room temperature, obtaining can porcelainization fire-resistant electrical equipment switching material.
The physical property of the present invention is: what the present invention prepared can porcelainization fire-resistant electrical equipment switching material energy gap be 1.3eV,
Critical breakdown electric field is 60 × 105V/cm, electron mobility is 2500cm2/ V s, hole mobility is 350cm2/ V s, is situated between
Electric constant 11, insulating properties are preferable, and resistance to 700 DEG C of high temperature extend 4 years service life.
Example 3
First measuring 120mL mass fraction is that 95% ethanol solution adds in beaker, and with glacial acetic acid regulation ethanol solution pH is
4.0, add 2.4g Silane coupling reagent KH-570, stir 30min with 400r/min, in beaker, add 120g Kaolin, 1.6g
Sodium hexameta phosphate, continues stirring 40min, obtains mixed liquor, proceeded to by mixed liquor in ball grinder, add 900g zirconium oxide bead, be placed in
In ball mill after ball milling 3h, add in 110 DEG C of drying baker and be dried to constant weight, obtain modified kaolin, standby；Weigh 25g brucite,
Add in 225mL deionized water, stir with 400r/min and mix 20min, addition 6g dodecylbenzene sodium sulfonate, 6g tween 80,
Under 90 DEG C of oil bath, continue stirring 40min, obtain mixed slurry, by mixed slurry sucking filtration, and be washed with deionized filter cake 5 times,
Proceed to 110 DEG C of drying baker are dried to constant weight, obtain modified hydrotalcite；Weigh the modified kaolin of the above-mentioned preparation of 60g, 20g respectively
Above-mentioned modified hydrotalcite, 8g glass dust, after mix homogeneously, load in ball grinder, add 900g zirconium oxide bead, the anhydrous second of 50mL
Alcohol, is placed in ball mill after ball milling 3h, proceeds to be dried to constant weight in 110 DEG C of drying baker, obtain composite powder；Weigh 60g polyphenyl second
Alkene is placed in mill 5min in 50 DEG C of banburies, adds above-mentioned composite powder, is warming up to 170 DEG C, stirs 8min with 200r/min,
Compound, injects a mixture into pelletize in comminutor, is cooled to room temperature, and obtaining can porcelainization fire-resistant electrical equipment switching material.
The physical property of the present invention is: what the present invention prepared can porcelainization fire-resistant electrical equipment switching material energy gap be 1.4eV,
Critical breakdown electric field is 90 × 105V/cm, electron mobility is 4000cm2/ V s, hole mobility is 600cm2/ V s, is situated between
Electric constant 12, insulating properties are preferable, and resistance to 800 DEG C of high temperature extend 5 years service life.
Claims (1)
1. one kind can the preparation method of porcelainization fire-resistant electrical equipment switching material, it is characterised in that concrete preparation process is:
(1) measuring 100 ~ 120mL mass fraction is that 95% ethanol solution adds in beaker, and regulates ethanol solution pH with glacial acetic acid
It is 3.0 ~ 4.0, adds 2 ~ 2.4g Silane coupling reagent KH-570, stir 20 ~ 30min with 300 ~ 400r/min, add in beaker
100 ~ 120g Kaolin, 1.5 ~ 1.6g sodium hexameta phosphate, continues stirring 30 ~ 40min, obtains mixed liquor, mixed liquor is proceeded to ball milling
In tank, add 800 ~ 900g zirconium oxide bead, be placed in ball mill after ball milling 2 ~ 3h, add 105 ~ 110 DEG C of drying baker are dried to
Constant weight, obtains modified kaolin, standby；
(2) weigh 20 ~ 25g brucite, add in 180 ~ 225mL deionized water, with 300 ~ 400r/min stirring mixing 15 ~
20min, adds 5 ~ 6g dodecylbenzene sodium sulfonate, 5 ~ 6g tween 80, continues stirring 30 ~ 40min under 80 ~ 90 DEG C of oil baths,
Mixed slurry, by mixed slurry sucking filtration, and is washed with deionized filter cake 3 ~ 5 times, proceed to 105 ~ 110 DEG C of drying baker are dried to
Constant weight, obtains modified hydrotalcite；
(3) modified kaolin prepared by 50 ~ 60g above-mentioned steps (1), the above-mentioned modified hydrotalcite of 18 ~ 20g, 5 ~ 8g glass are weighed respectively
Glass powder, after mix homogeneously, loads in ball grinder, adds 800 ~ 900g zirconium oxide bead, 30 ~ 50mL dehydrated alcohol, be placed in ball mill
After middle ball milling 2 ~ 3h, proceed to 105 ~ 110 DEG C of drying baker are dried to constant weight, obtain composite powder；
(4) weigh 50 ~ 60g polystyrene and be placed in mill 3 ~ 5min in 40 ~ 50 DEG C of banburies, add above-mentioned composite powder, heat up
To 150 ~ 170 DEG C, stir 5 ~ 8min with 100 ~ 200r/min, obtain compound, inject a mixture into pelletize in comminutor, be cooled to
Room temperature, obtaining can porcelainization fire-resistant electrical equipment switching material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887593A (en) * | 2022-04-24 | 2022-08-12 | 昆明理工大学 | Reversible organic bentonite and preparation method and application thereof |
| CN115466549A (en) * | 2022-09-06 | 2022-12-13 | 常州机电职业技术学院 | Ultrathin intumescent fire-proof smoke-suppressing coating based on acrylic polymer emulsion and preparation method thereof |
| CN115626832A (en) * | 2022-11-02 | 2023-01-20 | 湖北瑞信养生用品科技有限公司 | Silicon carbide fiber composite ceramic trough for glass production and preparation method thereof |
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| EP2592056A1 (en) * | 2011-10-10 | 2013-05-15 | Schott AG | Coated glass or glass ceramic substrate with haptic characteristics |
| CN103538320A (en) * | 2013-09-24 | 2014-01-29 | 池州市华强高低压电器成套设备有限公司 | High and low-voltage switch cabinet and power distribution box base |
| CN103772847A (en) * | 2013-12-26 | 2014-05-07 | 吴江市东泰电力特种开关有限公司 | Polyvinyl chloride anti-aging switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101816049A (en) * | 2007-10-03 | 2010-08-25 | Abb研究有限公司 | Electrical insulation system with improved electrical breakdown strength |
| CN102086301A (en) * | 2009-12-08 | 2011-06-08 | 天津德昊超微新材料有限公司 | Flame-retardant PA (Polyamide)/PE (Poly Ethylene) alloy material for electric switch |
| EP2592056A1 (en) * | 2011-10-10 | 2013-05-15 | Schott AG | Coated glass or glass ceramic substrate with haptic characteristics |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887593A (en) * | 2022-04-24 | 2022-08-12 | 昆明理工大学 | Reversible organic bentonite and preparation method and application thereof |
| CN114887593B (en) * | 2022-04-24 | 2023-12-26 | 昆明理工大学 | Reversible organic bentonite and preparation method and application thereof |
| CN115466549A (en) * | 2022-09-06 | 2022-12-13 | 常州机电职业技术学院 | Ultrathin intumescent fire-proof smoke-suppressing coating based on acrylic polymer emulsion and preparation method thereof |
| CN115466549B (en) * | 2022-09-06 | 2023-10-20 | 常州机电职业技术学院 | Ultrathin intumescent fireproof smoke-suppression coating based on acrylic polymer emulsion and preparation method thereof |
| CN115626832A (en) * | 2022-11-02 | 2023-01-20 | 湖北瑞信养生用品科技有限公司 | Silicon carbide fiber composite ceramic trough for glass production and preparation method thereof |
| CN115626832B (en) * | 2022-11-02 | 2023-05-05 | 湖北瑞信养生用品科技有限公司 | Silicon carbide fiber composite ceramic trough for glass production and preparation method thereof |
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Application publication date: 20161116 |
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