CN105198388A - Preparation method of ceramic binding post used for high voltage suspension type electric power - Google Patents
Preparation method of ceramic binding post used for high voltage suspension type electric power Download PDFInfo
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- CN105198388A CN105198388A CN201510615822.5A CN201510615822A CN105198388A CN 105198388 A CN105198388 A CN 105198388A CN 201510615822 A CN201510615822 A CN 201510615822A CN 105198388 A CN105198388 A CN 105198388A
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Abstract
The invention discloses a preparation method of a ceramic binding post used in high voltage suspension type electric power. According to the preparation method, a solid phase sintering method is adopted, nanometer alumimum oxide, barium titanate and sericite serve as main raw materials, methyl vinyl silicone rubber, mullite, talc, clay, celestine, zirconium oxide provided with stable yttrium, zinc oxide and titanium oxide serve as auxiliary constituents, iron oxide, niobium oxide, manganese dioxide, anti-explosion fibers, chromium oxide and nickel oxide serve as additives, and the ceramic binding post which is high in compression strength and used in high voltage suspension type electric power is prepared and obtained.
Description
Technical field
The invention belongs to a kind of preparation method of high voltage suspended electric power ceramic wiring terminal, belong to ceramic field.
Background technology
Terminal stud is widely used in various vacuum device, plays High-Voltage Insulation, vacuum-sealing and supports the effects such as fixing.Ceramic wiring terminal is terminal stud the most common.At high voltage suspended power domain, also widely, the research about ceramic wiring terminal is also very general in the application of ceramic wiring terminal.But along with the further miniaturization of electrical device and integrated, the voltage endurance capability improving high voltage suspended electric power ceramic wiring terminal becomes the concern of this field and one of problem demanding prompt solution.
Summary of the invention
The object of the invention is for the problems referred to above, develop a kind of preparation method with the high voltage suspended electric power ceramic wiring terminal of alumina base of high compressive strength.
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 10-50 part;
Barium titanate 10-50 part;
Sericite 10-50 part;
Methyl vinyl silicone rubber 5-15 part;
Mullite 5-15 part;
Talcum 5-15 part;
Clay 5-15 part;
Lazurite 5-15 part;
Zirconium white 5-15 part that yttrium is stable;
Zinc oxide 5-15 part;
Titanium oxide 5-15 part;
Ferric oxide 1-4 part;
Niobium oxides 1-4 part;
Manganse Dioxide 1-4 part;
Explosion-proof fiber 1-4 part;
Chromic oxide 1-4 part;
Nickel oxide 1-4 part;
(2) pre-burning: mixed by each raw material, at 200-300 degree Celsius of lower pre-burning 1-3 hour, obtains Preburning material;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 24-48 hour;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 600-650 DEG C, burn till 1-2 hour, and then calcine 1-2 hour at 1500-1600 DEG C.
As preferably: described pre-burning, 250 degrees Celsius of lower pre-burnings 2 hours, obtains Preburning material.
As preferably: the weight part of each raw material is:
Nano aluminium oxide 30 parts;
Barium titanate 30 parts;
Sericite 30 parts;
Methyl vinyl silicone rubber 9 parts;
Mullite 9 parts;
9 parts, talcum;
Clay 9 parts;
Lazurite 7 parts;
The zirconium white 7 parts that yttrium is stable;
7 parts, zinc oxide;
Titanium oxide 7 parts;
Ferric oxide 2 parts;
Niobium oxides 2 parts;
Manganse Dioxide 2 parts;
Explosion-proof fiber 2 parts;
1 part, chromic oxide;
Nickel oxide 1 part.
As preferably: the particle diameter of described nano aluminium oxide is 30-70nm.
As preferably: the time of described ball milling step is 36 hours.
As preferably: described in burn till burn till 1.5 hours at 620 DEG C, and then to calcine 1.5 hours at 1550 DEG C.
Beneficial effect of the present invention:
By reasonable preparation raw material, adopt the method for solid state sintering, with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive, have prepared the high voltage suspended electric power ceramic wiring terminal with high compressive strength.
The present invention is in the selection of main raw material, the nano aluminium oxide adopting physical and chemical performance more superior is as main material, by selecting the aluminum oxide of Nano grade, it has larger specific surface area and more superior tap density and more excellent mechanical property and anti-pressure ability.Simultaneously, the three kinds of materials that employ of the invention are main material, barium titanate and sericite, not only from the main material cost reducing nano aluminium oxide, meanwhile, also by the supplement effect of laminate structure, create supplement effect, meanwhile, heat-resisting, the resistance to compression of sericite and barium titanate and whippy physics and chemistry function, will produce synergistic effect and devotion effect to nano aluminium oxide.Meanwhile, also containing a lot of trace element in sericite, certain sintering aid effect will be played in sintering process.And in the selection of auxiliary material, methyl vinyl silicone rubber is modified rubber, by the compound with inorganic materials, the mechanical property of stupalith can be improved; And the stable zirconium white of mullite, talcum, clay, lazurite, yttrium plays enhancement for the performance such as anti-pressure and abrasion-proof strengthening stupalith.And the introducing of zinc oxide and titanium oxide, the self-cleaning ability of terminal stud can be improved; In the selection of additive, the present invention introduces multiple additives metal oxide, by the doping of metallic element, the performances such as the surface resistivity of pottery can be made to be optimized, then improve the voltage endurance capability of pottery.This ceramsite preparation process is simple, is applicable to suitability for industrialized production.
Embodiment
Below in conjunction with specific embodiment, and comparable data describes in further detail the present invention.Should be understood that these embodiments just in order to demonstrate the invention, but not limit the scope of the invention by any way.
Embodiment 1:
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 30 parts;
Barium titanate 30 parts;
Sericite 30 parts;
Methyl vinyl silicone rubber 9 parts;
Mullite 9 parts;
9 parts, talcum;
Clay 9 parts;
Lazurite 7 parts;
The zirconium white 7 parts that yttrium is stable;
7 parts, zinc oxide;
Titanium oxide 7 parts;
Ferric oxide 2 parts;
Niobium oxides 2 parts;
Manganse Dioxide 2 parts;
Explosion-proof fiber 2 parts;
1 part, chromic oxide;
Nickel oxide 1 part;
(2) pre-burning: mixed by each raw material, 250 degrees Celsius of lower pre-burnings 2 hours, obtains Preburning material;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 36 hours;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 650 DEG C, burn till 1.5 hours, and then calcine 1.5 hours at 1550 DEG C.
Embodiment 2:
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 35 parts;
Barium titanate 35 parts;
Sericite 35 parts;
Methyl vinyl silicone rubber 11 parts;
Mullite 11 parts;
11 parts, talcum;
Clay 11 parts;
Lazurite 7 parts;
The zirconium white 7 parts that yttrium is stable;
7 parts, zinc oxide;
Titanium oxide 7 parts;
Ferric oxide 1 part;
Niobium oxides 2 parts;
Manganse Dioxide 1 part;
Explosion-proof fiber 2 parts;
2 parts, chromic oxide;
Nickel oxide 1 part;
(2) pre-burning: each raw material is mixed, pre-burning 3 hours, obtains Preburning material at 300 degrees Celsius;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 48 hours;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 650 DEG C, burn till 2 hours, and then calcine 2 hours at 1600 DEG C.
Embodiment 3:
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 50 parts;
Barium titanate 50 parts;
Sericite 50 parts;
Methyl vinyl silicone rubber 15 parts;
Mullite 15 parts;
15 parts, talcum;
Clay 15 parts;
Lazurite 7 parts;
The zirconium white 7 parts that yttrium is stable;
7 parts, zinc oxide;
Titanium oxide 7 parts;
Ferric oxide 2 parts;
Niobium oxides 2 parts;
Manganse Dioxide 2 parts;
Explosion-proof fiber 2 parts;
1 part, chromic oxide;
Nickel oxide 1 part;
(2) pre-burning: each raw material is mixed, pre-burning 1 hour, obtains Preburning material at 200 degrees celsius;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 24 hours;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 600 DEG C, burn till 1 hour, and then calcine 1 hour at 1500 DEG C.
Embodiment 4:
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 10 parts;
Barium titanate 10 parts;
Sericite 10 parts;
Methyl vinyl silicone rubber 5 parts;
Mullite 5 parts;
5 parts, talcum;
Clay 5 parts;
Lazurite 5 parts;
The zirconium white 5 parts that yttrium is stable;
5 parts, zinc oxide;
Titanium oxide 5 parts;
Ferric oxide 1 part;
Niobium oxides 1 part;
Manganse Dioxide 1 part;
Explosion-proof fiber 1 part;
1 part, chromic oxide;
Nickel oxide 1 part;
(2) pre-burning: each raw material is mixed, pre-burning 1 hour, obtains Preburning material at 200 degrees celsius;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 24 hours;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 600 DEG C, burn till 1 hour, and then calcine 1 hour at 1500 DEG C.
Embodiment 5:
A preparation method for high voltage suspended electric power ceramic wiring terminal,
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 50 parts;
Barium titanate 50 parts;
Sericite 35 parts;
Methyl vinyl silicone rubber 10 parts;
Mullite 10 parts;
10 parts, talcum;
Clay 10 parts;
Lazurite 10 parts;
The zirconium white 10 parts that yttrium is stable;
10 parts, zinc oxide;
Titanium oxide 10 parts;
Ferric oxide 3 parts;
Niobium oxides 3 parts;
Manganse Dioxide 3 parts;
Explosion-proof fiber 3 parts;
3 parts, chromic oxide;
Nickel oxide 3 parts;
(2) pre-burning: mixed by each raw material, 250 degrees Celsius of lower pre-burnings 2 hours, obtains Preburning material;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 36 hours;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 625 DEG C, burn till 1 hour, and then calcine 1 hour at 1550 DEG C.
The physical measurement data of the embodiment of the present invention are as follows:
| Vickers' hardness/Gpa | Ultimate compression strength/Mpa | Specific inductivity | |
| Embodiment 1 | 66 | 790 | 9.08 |
| Embodiment 2 | 69 | 800 | 8.99 |
| Embodiment 3 | 68 | 795 | 9.12 |
| Embodiment 4 | 65 | 815 | 9.15 |
| Embodiment 5 | 70 | 810 | 9.20 |
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. a preparation method for high voltage suspended electric power ceramic wiring terminal, is characterized in that:
The preparation method of described ceramic wiring terminal comprises following preparation process:
(1) get the raw materials ready: with nano aluminium oxide, barium titanate and sericite for main raw material, with stable zirconium white, zinc oxide and the titanium oxide of methyl vinyl silicone rubber, mullite, talcum, clay, lazurite, yttrium for ancillary component, with ferric oxide, niobium oxides, Manganse Dioxide, explosion-proof fiber, chromic oxide and nickel oxide are additive;
The weight part of each raw material is:
Nano aluminium oxide 10-50 part;
Barium titanate 10-50 part;
Sericite 10-50 part;
Methyl vinyl silicone rubber 5-15 part;
Mullite 5-15 part;
Talcum 5-15 part;
Clay 5-15 part;
Lazurite 5-15 part;
Zirconium white 5-15 part that yttrium is stable;
Zinc oxide 5-15 part;
Titanium oxide 5-15 part;
Ferric oxide 1-4 part;
Niobium oxides 1-4 part;
Manganse Dioxide 1-4 part;
Explosion-proof fiber 1-4 part;
Chromic oxide 1-4 part;
Nickel oxide 1-4 part;
(2) pre-burning: mixed by each raw material, at 200-300 degree Celsius of lower pre-burning 1-3 hour, obtains Preburning material;
(3) ball milling: Preburning material is mixed, then adds appropriate water, according to Preburning material: ball: water=1:2:1, ball milling 24-48 hour;
(4) granulating and forming: by the granulation of ball milling material, and cold isostatic compaction;
(5) burn till: at 600-650 DEG C, burn till 1-2 hour, and then calcine 1-2 hour at 1500-1600 DEG C.
2. a preparation method for high voltage suspended electric power ceramic wiring terminal as claimed in claim 2, is characterized in that: described pre-burning, 250 degrees Celsius of lower pre-burnings 2 hours, obtains Preburning material.
3. a preparation method for high voltage suspended electric power ceramic wiring terminal as claimed in claim 1 or 2, is characterized in that: the weight part of each raw material is:
Nano aluminium oxide 30 parts;
Barium titanate 30 parts;
Sericite 30 parts;
Methyl vinyl silicone rubber 9 parts;
Mullite 9 parts;
9 parts, talcum;
Clay 9 parts;
Lazurite 7 parts;
The zirconium white 7 parts that yttrium is stable;
7 parts, zinc oxide;
Titanium oxide 7 parts;
Ferric oxide 2 parts;
Niobium oxides 2 parts;
Manganse Dioxide 2 parts;
Explosion-proof fiber 2 parts;
1 part, chromic oxide;
Nickel oxide 1 part.
4. a preparation method for high voltage suspended electric power ceramic wiring terminal as claimed in claim 3, is characterized in that: the particle diameter of described nano aluminium oxide is 30-70nm.
5. a preparation method for high voltage suspended electric power ceramic wiring terminal as claimed in claim 1, is characterized in that: the time of described ball milling step is 36 hours.
6. a preparation method for high voltage suspended electric power ceramic wiring terminal as claimed in claim 1, is characterized in that: described in burn till burn till 1.5 hours at 620 DEG C, and then to calcine 1.5 hours at 1550 DEG C.
7. the high voltage suspended electric power ceramic wiring terminal for preparing of the preparation method of high voltage suspended electric power ceramic wiring terminal any one of a claim 1-6.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810197324.7A CN108314429A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of higfh-tension ceramics binding post |
| CN201510615822.5A CN105198388B (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended electric power ceramic wiring terminal |
| CN201810197325.1A CN108298962A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended ceramic wiring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615822.5A CN105198388B (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended electric power ceramic wiring terminal |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810197325.1A Division CN108298962A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended ceramic wiring terminal |
| CN201810197324.7A Division CN108314429A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of higfh-tension ceramics binding post |
Publications (2)
| Publication Number | Publication Date |
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| CN105198388A true CN105198388A (en) | 2015-12-30 |
| CN105198388B CN105198388B (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810197324.7A Pending CN108314429A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of higfh-tension ceramics binding post |
| CN201810197325.1A Withdrawn CN108298962A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended ceramic wiring terminal |
| CN201510615822.5A Active CN105198388B (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended electric power ceramic wiring terminal |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810197324.7A Pending CN108314429A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of higfh-tension ceramics binding post |
| CN201810197325.1A Withdrawn CN108298962A (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of high voltage suspended ceramic wiring terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129289A (en) * | 2017-06-01 | 2017-09-05 | 合肥尚强电气科技有限公司 | A kind of insulator and preparation method thereof |
| CN108101526A (en) * | 2017-12-13 | 2018-06-01 | 萍乡强盛电瓷制造有限公司 | A kind of electric porcelain insulator and preparation method thereof |
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| CN101404360A (en) * | 2008-10-21 | 2009-04-08 | 潮州市三江电子有限公司 | Connector post of refrigeration compressor |
| CN101624290A (en) * | 2009-07-24 | 2010-01-13 | 中国科学院上海硅酸盐研究所 | Preparation method of high-transparent fine-grained alumina ceramics |
| CN101993239A (en) * | 2010-11-29 | 2011-03-30 | 中国科学院上海硅酸盐研究所 | Method for preparing fine-grain high-strength high-purity alumina ceramics |
| CN102153335A (en) * | 2011-04-02 | 2011-08-17 | 西南科技大学 | Machinable aluminium oxide ceramics and preparation method of machinable aluminium oxide ceramics |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941836B (en) * | 2010-08-30 | 2013-01-02 | 济源市更新瓷料有限公司 | Low-temperature ceramic-firing high-density alumina ceramic granulation powder and preparation method thereof |
| CN103739273B (en) * | 2013-12-23 | 2015-05-20 | 吴江华诚复合材料科技有限公司 | Insulating ceramic material and preparation method thereof |
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2015
- 2015-09-24 CN CN201810197324.7A patent/CN108314429A/en active Pending
- 2015-09-24 CN CN201810197325.1A patent/CN108298962A/en not_active Withdrawn
- 2015-09-24 CN CN201510615822.5A patent/CN105198388B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404360A (en) * | 2008-10-21 | 2009-04-08 | 潮州市三江电子有限公司 | Connector post of refrigeration compressor |
| CN101624290A (en) * | 2009-07-24 | 2010-01-13 | 中国科学院上海硅酸盐研究所 | Preparation method of high-transparent fine-grained alumina ceramics |
| CN101993239A (en) * | 2010-11-29 | 2011-03-30 | 中国科学院上海硅酸盐研究所 | Method for preparing fine-grain high-strength high-purity alumina ceramics |
| CN102153335A (en) * | 2011-04-02 | 2011-08-17 | 西南科技大学 | Machinable aluminium oxide ceramics and preparation method of machinable aluminium oxide ceramics |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129289A (en) * | 2017-06-01 | 2017-09-05 | 合肥尚强电气科技有限公司 | A kind of insulator and preparation method thereof |
| CN108101526A (en) * | 2017-12-13 | 2018-06-01 | 萍乡强盛电瓷制造有限公司 | A kind of electric porcelain insulator and preparation method thereof |
| CN108101526B (en) * | 2017-12-13 | 2020-07-17 | 萍乡强盛电瓷制造有限公司 | Electric porcelain insulator and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108298962A (en) | 2018-07-20 |
| CN105198388B (en) | 2018-04-24 |
| CN108314429A (en) | 2018-07-24 |
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Effective date of registration: 20180320 Address after: 362000 Dongping City, Quanzhou province Yongchun town Dongshan village, No. 579, No. Applicant after: Yan Rongtu Address before: 410205 A543, Changsha, China, the headquarters of the software park, No. 39, sharp mountain road, high tech Development Zone, Hunan, China Applicant before: CHANGSHA DINGCHENG NEW MATERIAL TECHNOLOGY CO., LTD. |
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Effective date of registration: 20191122 Address after: 412200 No. three, 6 Liling Road, Hunan, Zhuzhou Patentee after: Hunan Xingcheng Electric Porcelain Electrical Appliances Co., Ltd. Address before: 362000 Dongping City, Quanzhou province Yongchun town Dongshan village, No. 579, No. Patentee before: Yan Rongtu |