CN112679143A - Insulating tube bus castable and process for preparing inorganic insulating tube bus by using same - Google Patents
Insulating tube bus castable and process for preparing inorganic insulating tube bus by using same Download PDFInfo
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- CN112679143A CN112679143A CN202011591859.6A CN202011591859A CN112679143A CN 112679143 A CN112679143 A CN 112679143A CN 202011591859 A CN202011591859 A CN 202011591859A CN 112679143 A CN112679143 A CN 112679143A
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- castable
- insulating tube
- bus
- tube bus
- wollastonite
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000945 filler Substances 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- 239000010456 wollastonite Substances 0.000 claims abstract description 13
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003085 diluting agent Substances 0.000 claims abstract description 8
- 239000012745 toughening agent Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 6
- 238000009849 vacuum degassing Methods 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 claims description 3
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000009413 insulation Methods 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 15
- 238000001723 curing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
The invention discloses an insulating tube bus castable which comprises the following raw materials in percentage by mass: 11-15% of epoxy resin, 2-5% of curing agent, 1-3% of toughening agent, 0.5-1% of accelerator and 0.5-1% of diluent; 55-65 wt.% of aggregate silicon micropowder, 8-13 wt.% of filler alumina and 9-12 wt.% of filler wollastonite. The insulating tube bus castable has good acid resistance and alkali resistance after being cured, is hardly corroded by the acid and alkali of the environment, has high compactness, water absorption of less than 0.05 percent, breaking strength of more than 30MPa and normal-temperature insulation resistance of more than 1T omega, and greatly improves the safety factor of an inorganic cast bus duct in use. Therefore, the insulated pipe bus prepared by the castable has the characteristics of high insulativity, corrosion resistance, stable performance and the like.
Description
Technical Field
The invention particularly relates to an insulating tube bus castable and a process for preparing an inorganic insulating tube bus by using the same.
Background
The insulated tubular bus has the outstanding advantages of high mechanical strength, large current-carrying capacity, good insulating property and the like, and is widely applied to various places such as shipbuilding, papermaking, power plants, transformer substations, petrochemical industry, ferrous metallurgy, mechanical electronics, large buildings and the like at present.
The bus duct with the metal shell cannot be protected from acid rain and corrosion, and corrosive gas and even corrosive liquid generated by a chemical plant can splash onto electrical products. This requires that the bus bar be corrosion resistant. The epoxy resin castable for pouring the bus duct has excellent corrosion resistance and can effectively resist the corrosion of various chemicals.
The solid epoxy composite resin poured bus duct has the advantages that the bus duct is directly poured and sealed, the protection level reaches IP68, various electrical properties of an original bus duct system are reserved, meanwhile, the bus duct has higher fire-resistant, waterproof, anti-corrosion and anti-explosion properties, and the power consumption requirements of various special occasions can be fully met. The fully-insulated cast bus conductor is made of copper bars or aluminum bars, and the outer surface of the conductor is cast by adopting a composite insulating material. The composite insulating material is prepared by a plurality of inert inorganic mineral materials such as special epoxy resin, special quartz sand and the like according to specific formula and process requirements, and the properties of epoxy resins with different brands are different, so that the comprehensive properties of the insulating tube bus are influenced. The existing production process for casting the insulated tubular bus is relatively complex, and the key process of the existing production process comprises the steps of wrapping, vacuumizing, drying, casting, curing and the like. Although the insulated tubular bus is widely applied at present and has a good effect, the industry is still in the beginning stage at home, and no comprehensive and uniform standard is formed at present, so that the outstanding problems of various product types and insulating materials, different structural designs and production processes, uneven product quality and operation effect and the like exist on the whole. Some products have the phenomena of wetting, discharging and even breakdown in operation due to simple structure and poor quality.
Disclosure of Invention
The invention provides an insulating tube bus castable and a process for preparing an insulating tube bus by using the same, aiming at the defects of poor insulating property and easiness in cracking of a bus duct. The insulating tube bus castable has good acid resistance and alkali resistance after being cured, is hardly corroded by the acid and alkali of the environment, has high compactness, water absorption of less than 0.05 percent, breaking strength of more than 30MPa and normal-temperature insulation resistance of more than 1T omega, and greatly improves the safety factor of an inorganic cast bus duct in use. Therefore, the insulated pipe bus prepared by the castable has the characteristics of high insulativity, corrosion resistance, stable performance and the like.
The technical scheme adopted by the invention for solving the problems is as follows:
the insulating tube bus castable comprises the following raw materials in percentage by mass: 11-15% of epoxy resin, 2-5% of curing agent, 1-3% of toughening agent, 0.5-1% of accelerator and 0.5-1% of diluent; 55-65 wt.% of aggregate silicon micropowder, 8-13 wt.% of filler alumina and 9-12 wt.% of filler wollastonite.
According to the scheme, the epoxy value of the epoxy resin is 0.41-0.47eq/100g, such as E-44, E-51, CYDCN-205 and the like; the curing agent is preferably polyether amine, dicyandiamide, pyromellitic dianhydride and the like; the toughening agent is preferably diisononyl phthalate, polyazelaic anhydride and the like; the promoter is preferably benzyl dimethylamine or imidazole; the diluent is preferably xylene, n-butanol, etc.
According to the scheme, the aggregate is composed of silicon micro powder with different particle sizes, and the aggregate is 4-6 meshes, 16-30 meshes and 40-60 meshes according to the grading mass proportion (4-6): (3-1): 1 are mixed.
According to the scheme, the silicon micro powderSiO 22The content is not less than 99%.
According to the scheme, the granularity of the alumina is 1000-1200 meshes, the alpha phase is more than 95 percent, the purity is more than 99.8 percent, and the alumina is spherical; the granularity of the wollastonite is 1000-1200 meshes, the whiteness is more than or equal to 90, and the length-diameter ratio of the wollastonite is 10-20.
On the basis, the invention also provides a process for preparing the insulated tube bus, which comprises the steps of adopting the castable disclosed by the invention, pouring the raw materials which are uniformly stirred and mixed in a vacuum environment into a mould, oscillating, vacuumizing, and curing and molding in a high-temperature environment to obtain the insulated tube bus.
The process for preparing the insulated pipe bus by adopting the insulated pipe bus castable comprises the following specific steps:
(1) weighing epoxy resin, a curing agent, a toughening agent, an accelerant, aggregate silicon micropowder, filler alumina and wollastonite according to the raw material mass percentage and specification requirements of the castable of the invention for later use; cleaning a steel casting mold for later use;
(2) adding the epoxy resin into a stirrer, heating to 115-125 ℃, and uniformly stirring after the epoxy resin is completely melted; then adding dry filler, cooling to 80-90 ℃, and vacuum degassing;
(3) and (3) adding the dried aggregate, a curing agent, an accelerator, a flexibilizer and a diluent into the system obtained in the step (2), degassing and stirring uniformly, heating the mold to the temperature of 120-.
According to the scheme, in the step (3), the dried filler is slowly poured into a stirrer; during degassing, stirring and vacuum degassing at the temperature of 80-90 ℃, wherein the vacuum degree is not lower than 650Pa, and the vacuum degassing time is more than 2 h.
The invention reduces the material of the resin on the premise of ensuring the performance of the product, adds the filler to be filled in the resin to reduce the volume change of the resin, and simultaneously, the filler also plays a role in modifying the resin. Compared with the prior art, the insulating tube bus has the beneficial effects that:
(1) the insulation performance is reliable, the insulation resistance at normal temperature exceeds 1T omega, and the safety coefficient of the inorganic cast bus duct in use is greatly improved;
(2) the pipe bus has excellent air tightness and water tightness by optimally selecting aggregates for reasonable grading, can prevent dust from entering, has water absorption of less than 0.05 percent, and can reliably run for a long time under the condition of continuous immersion;
(3) by adding filler alumina and combining needle-shaped wollastonite and selecting proper curing agent and dosage, the refractory performance (750 DEG/3 h fire resistance of a low-pressure product) of the castable is ensured, the castable has excellent mechanical property, and the breaking strength is more than 30 MPa; and has super-strong corrosion resistance, good acid resistance and alkali resistance after curing, and hardly corroded by the acid and alkali resistance of the environment.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the content of the present invention, but the present invention is not limited to the following examples.
In the following embodiment, the mold is used for cleaning impurities on the surface in advance, coating agents are uniformly coated in advance to facilitate demolding, and then demolding glue is used for pouring the outer side of a splicing seam of the mold to prevent leakage; the mould is preheated in a drying oven to a high-temperature curing temperature in advance, for example, the mould is placed in an oven for pre-drying for 2 hours at 120 +/-5 ℃; the vacuum stirrer can ensure that bubbles in the raw materials are fully removed; the plane plain bumper can ensure that the raw materials in the die are filled and distributed uniformly. In addition, after the pouring is finished, the side wall of the mold is reinforced to prevent the change of the overall dimension of the bus caused by heating expansion in the curing process; during the curing process, the surface of the batch is scraped intermittently with a scraper, which helps to break up air bubbles and further promotes flow.
In the following examples, the insulated bus bars were tested for insulation performance, water absorption, fire resistance, and mechanical properties according to the following standards or methods.
1) Insulating property: GBT24343_2009 standard for insulation resistance test of industrial mechanical electrical equipment
2) Mechanical properties: test method for normal-temperature breaking strength of GB T3001-2007 refractory material
3) Fire resistance: JB T10327-2011 fire-resistant bus trunk line system (fire-resistant bus duct) standard
4) Water absorption test: randomly taking 3 samples of the same batch, drying at 120 ℃ for 1h, weighing each sample for 3 times, taking an average value (the precision is +/-0.01 g), placing the average value into a distilled water container, keeping the water level 10mm higher than the highest position of the sample, and standing for 24 h. The surface-adsorbed water was removed by a wet wipe saturated with water, and the average (accuracy. + -. 0.01g) was quickly weighed 3 times per sample on a balance. And calculating the water absorption, and taking the arithmetic average value of the water absorption of the three samples as the test result of the batch.
Example 1
The insulating tube bus castable has the raw materials with the mass fraction and specification shown in table 2.
Table 2 raw material mixing ratio of insulating tube bus castable
The process for preparing the insulated pipe bus by adopting the insulated pipe bus castable of the embodiment comprises the following steps in sequence according to the mixture ratio and specification of the raw materials shown in the table 2:
(1) placing the aggregate silicon micropowder and fillers (silicon oxide and wollastonite) in a drying oven for drying for later use;
(2) adding epoxy resin into a stirrer, heating to 120 ℃, stirring uniformly after completely melting, adding dried and cooled fillers (silicon oxide and wollastonite), cooling to 85 ℃, and degassing in vacuum;
(3) adding aggregate silicon micropowder (the grading of 4-6 meshes of grain size, 16-30 meshes of grain size and 40-60 meshes of grain size is 6:1:1), curing agent (polyether amine), accelerator (benzyl dimethylamine), toughening agent (diisononyl phthalate) and diluent (xylene) into the system obtained in the step (2), degassing and uniformly stirring;
(4) heating the mould to 130 ℃, pouring the mixture obtained in the step (3) into the mould, compacting and degassing, preserving heat at 120 ℃ for 1h, and then performing additional pouring; and then keeping the temperature of 120 ℃ for 3h, demoulding, keeping the temperature of 120 ℃ for 6h, and slowly cooling to room temperature to obtain the insulated pipe bus.
The results of the performance tests in combination with table 3 show that: the insulating tube bus prepared by the insulating tube bus castable in the embodiment 1 has smooth and non-layered appearance; the mechanical test result shows that the rupture strength is 45MPa, and the mechanical property is excellent; the water absorption rate is 0.02% through testing, and the waterproof effect is excellent; the electrical property test result shows that the insulation resistance reaches 15000M omega at normal temperature, and the insulation effect is excellent; the fire resistance test has low pressure of 780 degrees/3 hours for fire prevention.
Example 2
Example 2 differs from example 1 in that: the aggregate silicon micropowder consists of 4-6 meshes, 16-30 meshes and 40-60 meshes in grading of 4:3: 1.
The results of the performance tests in combination with table 3 show that: the insulating tube bus prepared by the insulating tube bus castable in the embodiment 2 has smooth and non-layered appearance, and the mechanical test result shows that the rupture strength is 35MPa, and the insulating tube bus castable has better mechanical property; the water absorption rate is 0.03 percent through testing, and the waterproof effect is excellent; the electrical property test result shows that the insulation resistance reaches 13000M omega at normal temperature, and the insulation effect is excellent; the fire resistance test shows that the fire resistance is low pressure 760 DEG/3 h.
Example 3
Example 3 differs from example 1 in that: the parts of the resin system, the aggregate and the filler are respectively 150 parts, 650 parts and 200 parts.
The results of the performance tests in combination with table 3 show that: the insulating tube bus prepared by the insulating tube bus castable in the embodiment 3 has a non-smooth and non-layered appearance, and a mechanical test result shows that the bending strength is 31MPa, and the insulating tube bus castable has excellent mechanical properties; the water absorption rate is 0.05 percent through testing, and the waterproof effect is excellent; the electrical property test result shows that the insulation resistance reaches 10000 MOmega at normal temperature, and the insulation effect is excellent; the fire resistance test has low pressure of 750 DEG/3 h for fire prevention.
TABLE 3 Main Properties of the insulating castable of the invention
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and changes can be made without departing from the inventive concept of the present invention, and these modifications and changes are within the protection scope of the present invention.
Claims (8)
1. The insulating tube bus castable is characterized by comprising the following raw materials in percentage by mass: 11-15% of epoxy resin, 2-5% of curing agent, 1-3% of toughening agent, 0.5-1% of accelerator, 0.5-1% of diluent, 55-65 wt% of aggregate silicon micropowder, 8-13% of filler alumina and 9-12% of wollastonite.
2. The insulating tube bus castable according to claim 1, wherein the silica micropowder is prepared by grading the silica micropowder into 4-6 mesh, 16-30 mesh and 40-60 mesh according to the mass ratio of (4-6): (3-1): 1 are mixed.
3. The insulating tube bus castable according to claim 1, wherein SiO in the silica micropowder2The content is not less than 99%.
4. The insulating tube bus bar castable as claimed in claim 1, wherein the alumina has a particle size of 1000-; the granularity of the wollastonite is 1000-1200 meshes, the whiteness is more than or equal to 90, and the length-diameter ratio of the wollastonite is 10-20.
5. The insulating tube bus castable according to claim 1, wherein the epoxy value of the epoxy resin is 0.41-0.47eq/100 g; the curing agent is one or more of polyetheramine, dicyandiamide and pyromellitic dianhydride; the toughening agent is one or two of diisononyl phthalate and polyazelaic anhydride; the accelerant is one or two of benzyl dimethylamine and imidazole; the diluent is one or two of dimethylbenzene and n-butyl alcohol.
6. A process for preparing an insulated tube bus is characterized in that the insulating tube bus is obtained by adopting the castable in claim 1, pouring raw materials which are stirred and mixed uniformly in a vacuum environment into a mold, oscillating, vacuumizing, and curing and molding in a high-temperature environment.
7. A process for preparing an insulated pipe bus is characterized by comprising the following specific steps:
(1) weighing epoxy resin, a curing agent, a toughening agent, an accelerant, aggregate silicon micropowder, filler alumina and wollastonite according to the raw material mass percentage and specification requirements of the castable of claim 1 for later use; cleaning a steel casting mold for later use;
(2) adding the epoxy resin into a stirrer, heating to 115-125 ℃, and uniformly stirring after the epoxy resin is completely melted; then adding dried filler alumina and wollastonite, cooling to 80-90 ℃, and vacuum degassing;
(3) adding the dried aggregate silicon micro powder, a curing agent, an accelerant, a flexibilizer and a diluent into the system obtained in the step (2), degassing and stirring uniformly, then heating the mold to 120-fold sand-heat 130 ℃, pouring, vibrating and degassing, preserving heat at 120 ℃ of 100-fold sand-heat for 1-3 hours, then pouring again, preserving heat at 120 ℃ of 100-fold sand-heat for 3-5 hours, demoulding, continuing preserving heat at 120 ℃ of 100-fold sand-heat for 6-8 hours, and slowly cooling to room temperature to obtain the insulated tube bus.
8. The process for preparing the insulated pipe bus bar according to claim 7, wherein in the step (3), the dried filler is slowly poured into a stirrer; during degassing, stirring and vacuum degassing at the temperature of 80-90 ℃, wherein the vacuum degree is not lower than 650Pa, and the vacuum degassing time is more than 2 h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011591859.6A CN112679143A (en) | 2020-12-29 | 2020-12-29 | Insulating tube bus castable and process for preparing inorganic insulating tube bus by using same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011591859.6A CN112679143A (en) | 2020-12-29 | 2020-12-29 | Insulating tube bus castable and process for preparing inorganic insulating tube bus by using same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957890A (en) * | 2022-04-18 | 2022-08-30 | 江苏大学 | PTFE fused refractory bus duct castable and preparation method thereof |
| CN115259746A (en) * | 2022-09-28 | 2022-11-01 | 江苏盈聚电气有限公司 | Mineral volcanic rock fire-resistant bus and processing technology thereof |
| CN117747204A (en) * | 2024-02-20 | 2024-03-22 | 山东新兴建筑规划设计研究院 | Preparation method of inorganic mineral full-casting medium-voltage bus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233360A (en) * | 2005-06-06 | 2008-07-30 | 卡伯特公司 | Insulated pipe and method for preparing same |
| CN103059513A (en) * | 2013-02-17 | 2013-04-24 | 桂林理工大学 | Castable for manufacturing high-voltage motor nano composite main insulation |
| CN110357492A (en) * | 2019-07-30 | 2019-10-22 | 湖北兴和电力新材料股份有限公司 | It is a kind of to pour material and its preparation method and application entirely for the inorganic of bus |
-
2020
- 2020-12-29 CN CN202011591859.6A patent/CN112679143A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233360A (en) * | 2005-06-06 | 2008-07-30 | 卡伯特公司 | Insulated pipe and method for preparing same |
| CN103059513A (en) * | 2013-02-17 | 2013-04-24 | 桂林理工大学 | Castable for manufacturing high-voltage motor nano composite main insulation |
| CN110357492A (en) * | 2019-07-30 | 2019-10-22 | 湖北兴和电力新材料股份有限公司 | It is a kind of to pour material and its preparation method and application entirely for the inorganic of bus |
Non-Patent Citations (2)
| Title |
|---|
| 于守武: "《高分子材料改性 原理及技术》", 31 May 2015, 知识产权出版社 * |
| 张云兰等: "《非金属材料》", 31 March 1983, 中国农业机械出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957890A (en) * | 2022-04-18 | 2022-08-30 | 江苏大学 | PTFE fused refractory bus duct castable and preparation method thereof |
| CN114957890B (en) * | 2022-04-18 | 2023-10-24 | 苏州培麟畅电气科技有限公司 | PTFE-fused refractory bus duct castable and preparation method thereof |
| CN115259746A (en) * | 2022-09-28 | 2022-11-01 | 江苏盈聚电气有限公司 | Mineral volcanic rock fire-resistant bus and processing technology thereof |
| CN117747204A (en) * | 2024-02-20 | 2024-03-22 | 山东新兴建筑规划设计研究院 | Preparation method of inorganic mineral full-casting medium-voltage bus |
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