CN112679919A - Solidified core group injection molding material for lightning arrester - Google Patents
Solidified core group injection molding material for lightning arrester Download PDFInfo
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- CN112679919A CN112679919A CN202011500308.4A CN202011500308A CN112679919A CN 112679919 A CN112679919 A CN 112679919A CN 202011500308 A CN202011500308 A CN 202011500308A CN 112679919 A CN112679919 A CN 112679919A
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- lightning arrester
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 25
- 239000012778 molding material Substances 0.000 title claims abstract description 25
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000011787 zinc oxide Substances 0.000 claims abstract description 31
- 229920002215 polytrimethylene terephthalate Polymers 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 17
- -1 polytrimethylene terephthalate Polymers 0.000 claims abstract description 16
- 239000012745 toughening agent Substances 0.000 claims abstract description 15
- 239000006229 carbon black Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 239000003063 flame retardant Substances 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000004677 Nylon Substances 0.000 claims abstract description 7
- 229920001778 nylon Polymers 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims description 16
- 230000003179 granulation Effects 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 6
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims description 4
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 4
- 229940035437 1,3-propanediol Drugs 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000011550 stock solution Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 12
- 229920002994 synthetic fiber Polymers 0.000 abstract description 6
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 2
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of materials, in particular to a solidified core group injection molding material for a lightning arrester, which comprises the following components in parts by weight: 20-30 parts of polytrimethylene terephthalate, 20-30 parts of nylon 6620-30 parts of glass fiber, 8-10 parts of carbon black, 5-10 parts of nano zinc oxide, 3-5 parts of a flame retardant, 1-3 parts of a compatilizer, 1-3 parts of an antioxidant, 1-2 parts of a lubricant and 2-3 parts of a toughening agent. The PTT is doped, so that the water absorption of the nylon is reduced; the strength is improved by doping carbon fiber and carbon black; the compatilizer realizes the uniform mixing of all components in the PTT/PA66 synthetic material; by doping the toughening agent, the toughness and the comprehensive performance of the synthetic material are improved, and the function of the nano zinc oxide is promoted. The solidified core group injection molding material prepared by the invention has good strength and toughness, and reduces the water absorption rate of the material, so that the material can be well applied to power grid accessories with strict requirements.
Description
Technical Field
The invention relates to the field of materials, in particular to a solidified core group injection molding material for a lightning arrester.
Background
In recent years, due to the continuous development of the manufacturing technology of the lightning arrester, the international standard has higher and higher requirements on the electrical performance of the zinc oxide lightning arrester. In the daily test process of zinc oxide arrester, can often find that many arresters appear flashover when residual voltage or heavy current test, trouble such as thermal breakdown, during the low current test, appear the phenomenon that leakage current increases, discover after dissecting that most all are that sealed badly wets and arouse. The excessive leakage current can quickly reduce the insulation strength of the lightning arrester. This is an important factor in causing insulation damage of high-voltage electric power equipment.
The zinc oxide resistance card is used as a core component of the arrester, and the packaging structure material of the zinc oxide resistance card can directly influence the overall sealing performance of the arrester, so that the level and the current capacity of the zinc oxide arrester under lightning impact are influenced. At present, although the existing injection molding materials can be used for simply realizing the fixed connection between resistance cards and electrodes, the stability performance is very poor, the moisture absorption is very easy, the impact force and the heat generated in the lightning impulse process of the lightning arrester are difficult to bear, the lightning arrester is not corrosion-resistant, high temperature resistant and easy to absorb moisture, the influence on all parameters of the lightning arrester is fatal, and the service life of the lightning arrester is seriously influenced because more than 90 percent of faults of the lightning arrester are caused by poor self sealing when the lightning arrester runs in a net hanging mode. Under the normal condition, under the conditions that the temperature is 23 ℃ and the relative humidity is 50%, the equilibrium water absorption rate is about 2.5%, and under the condition that the relative humidity is 100%, the equilibrium water absorption rate is about 9%.
At present, many manufacturers adopt an old sleeving structure to play a certain sealing role, but the problem cannot be solved fundamentally, the zinc oxide resistance card cannot be completely sealed, the cost of the sleeving structure is high, a large amount of experimental data show that the zinc oxide resistance card has certain influence on the electrical performance of the whole lightning arrester, and moisture is very easily remained in the inside of the zinc oxide resistance card.
Therefore, when designing the insulation of high-voltage power equipment, the moisture absorption phenomenon in the arrester is not allowed under the action of long-term working voltage, and when the leakage current exceeds a certain degree, the equipment needs to be withdrawn from operation for maintenance or replacement.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the solidified core group injection molding material for the lightning arrester, which realizes the advantages of bending resistance, tensile strength, high temperature resistance and moisture resistance of the solidified core group for the lightning arrester.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the solidified core group injection molding material for the lightning arrester comprises the following components in parts by weight: 20-30 parts of polytrimethylene terephthalate, 20-30 parts of nylon 6620-30 parts of glass fiber, 8-10 parts of carbon black, 5-10 parts of nano zinc oxide, 3-5 parts of a flame retardant, 1-3 parts of a compatilizer, 1-3 parts of an antioxidant, 1-2 parts of a lubricant and 2-3 parts of a toughening agent.
A preparation method of a solidified core group injection molding material for a lightning arrester comprises the following steps:
(1) mixing polytrimethylene terephthalate, nylon 66, nano zinc oxide, a flame retardant, a compatilizer, an antioxidant, a lubricant and a toughening agent to prepare a mixture;
(2) and extruding and pelletizing the glass fiber, the carbon black and the mixture by using a screw extruder with the temperature of 235-255 ℃ and the length-diameter ratio of 30/45 to obtain the PTT/PA66 synthetic plastic.
Preferably, in step (1), the poly (trimethylene terephthalate) is prepared by polycondensation of terephthalic acid and 1, 3-propanediol.
Preferably, in the step (1), the solubilizer is ethylene-octene copolymer grafted maleic anhydride with a grafting rate of 1.0-1.3%.
Preferably, in the step (1), the toughening agent is polypropylene blended bidirectional graft polystyrene with a grafting rate of 1.0-1.2% or ethylene-butylene copolymer grafted maleic anhydride with a grafting rate of 0.8-1.5%.
Preferably, in the step (1), the preparation method of nano zinc oxide comprises the following steps:
(1) adding 100 liters of ionized water and 50kg of electronic grade zinc oxide into a grinding tank in sequence, stirring and circulating for 1.5 hours, cooling for 0.5 hour, and stirring and circulating for 1.5 hours to prepare a mixed solution;
(2) adding adhesive into a dispersion tank, adding the mixed solution and the ionized water obtained after washing the grinding tank through a circulating pipe with an outlet provided with a 100-mesh screen, and stirring until the particle size D50 of the slurry is not more than 0.6 um;
(3) injecting the slurry with the solid content of 50-55 into a stock solution tank, and starting a diaphragm pump when the inlet temperature is 250 ℃; and (3) selecting a spraying piece with the thickness of 0.3-0.5 mm, placing the spraying piece into a spray gun, placing the spray gun into a granulation tower, and opening a valve to start granulation, wherein the pressure of a diaphragm pump is 0.8-1.2 Mpa.
Preferably, the ball in the grinding tank is an oxidation pickaxe ball with the diameter of 0.5-1 mm.
Preferably, the temperature of a granulation outlet is kept between 110 and 120 ℃, and the negative pressure of granulation is kept between 3 and 6 MPa.
(III) advantageous effects
The invention provides a solidified core group injection molding material for a lightning arrester, which has the following beneficial effects:
(1) the strength of the PTT/PA66 synthetic material is improved by doping the carbon fiber and the carbon black; the compatilizer enhances the interface compatibility, so that the interfaces among the glass fiber, the carbon black, the nano zinc oxide, the PTT and the PA66 are more compatible, and the components in the PTT/PA66 synthetic material are uniformly mixed; by doping the toughening agent in the PTT/PA66 synthetic material, the toughness and the comprehensive performance of the synthetic material are improved on one hand, and the effect of the nano zinc oxide is promoted on the other hand; under the action of other raw material components, the nano zinc oxide is compatible with PA66 and PTT to form a composite material with higher strength and toughness.
(2) The water absorption of nylon 66 is low, and the water absorption of PTT/PA66 blends 24h and 48h is only 41 percent and 47 percent of pure nylon 66 by doping polytrimethylene terephthalate (PTT) with about 20 percent, namely the introduction of PTT effectively reduces the water absorption of nylon. The solidified core group injection molding material prepared by the invention has good strength and toughness, and reduces the water absorption rate of the material, so that the material can be well applied to power grid accessories with strict requirements.
(3) The solidified core group injection molding material is used between the resistance cards and used as a fixing medium between the resistance cards and electrodes, so that the advantages of bending resistance, tensile resistance, high temperature resistance, no moisture absorption and the like of the whole core group are realized, and the injection molding material is low in cost, convenient to store and transport, pollution-free, resistant to lightning strike, excellent in moisture resistance and good in sealing effect; the connection and fixation between the zinc oxide resistance cards and the electrodes are realized, the electrical performance parameters of the zinc oxide resistance cards and the through-flow and heat conduction capacity between the resistance cards are not influenced, and the high temperature resistance and the sealing performance of the whole lightning arrester are improved to a great extent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
The solidified core group injection molding material for the lightning arrester comprises the following components in parts by weight: 22 parts of polytrimethylene terephthalate, 6622 parts of nylon, 7 parts of glass fiber, 9 parts of carbon black, 7 parts of nano zinc oxide, 3 parts of flame retardant, 2 parts of compatilizer, 2 parts of antioxidant, 1 part of lubricant and 2 parts of toughener; the polytrimethylene terephthalate is formed by polycondensation of terephthalic acid and 1, 3-propanediol; the solubilizer is ethylene-octene copolymer grafted maleic anhydride with the grafting rate of 1.0-1.3%; the toughening agent is polypropylene blending bidirectional graft polystyrene with the grafting rate of 1.0-1.2%.
A preparation method of a solidified core group injection molding material for a lightning arrester comprises the following steps:
(1) mixing polytrimethylene terephthalate, nylon 66, nano zinc oxide, a flame retardant, a compatilizer, an antioxidant, a lubricant and a toughening agent to prepare a mixture;
(2) and extruding and pelletizing the glass fiber, the carbon black and the mixture by using a screw extruder with the temperature of 240 ℃ and the length-diameter ratio of 30/45 to obtain the PTT/PA66 synthetic plastic.
In the step (1), the preparation method of the nano zinc oxide comprises the following steps:
(1) adding 100 liters of ionized water and 50kg of electronic grade zinc oxide into a grinding tank in sequence, stirring and circulating for 1.5 hours, cooling for 0.5 hour, and stirring and circulating for 1.5 hours to prepare a mixed solution; the ball in the grinding tank is an oxidation pickaxe ball with the diameter of 0.5-1 mm;
(2) adding adhesive into a dispersion tank, adding the mixed solution and the ionized water obtained after washing the grinding tank through a circulating pipe with an outlet provided with a 100-mesh screen, and stirring until the particle size D50 of the slurry is not more than 0.6 um;
(3) injecting the slurry with the solid content of 50-55 into a stock solution tank, and starting a diaphragm pump when the inlet temperature is 250 ℃; selecting a spraying piece with the thickness of 0.3-0.5 mm, placing the spraying piece into a spraying gun, placing the spraying gun into a granulation tower, opening a valve to start granulation, wherein the pressure of a diaphragm pump is 0.8-1.2 Mpa; wherein the temperature of the granulation outlet is kept at 110, and the negative pressure of granulation is kept between 3 and 6 MPa.
Example 2
The solidified core group injection molding material for the lightning arrester comprises the following components in parts by weight: 25 parts of polytrimethylene terephthalate, 6628 parts of nylon, 8 parts of glass fiber, 9 parts of carbon black, 8 parts of nano zinc oxide, 5 parts of flame retardant, 3 parts of compatilizer, 3 parts of antioxidant, 2 parts of lubricant and 3 parts of toughener; the polytrimethylene terephthalate is formed by polycondensation of terephthalic acid and 1, 3-propanediol; the solubilizer is ethylene-octene copolymer grafted maleic anhydride with the grafting rate of 1.0-1.3%; the toughening agent is ethylene-butylene copolymer grafted maleic anhydride with the grafting rate of 0.8-1.5%.
A preparation method of a solidified core group injection molding material for a lightning arrester comprises the following steps:
(1) mixing polytrimethylene terephthalate, nylon 66, nano zinc oxide, a flame retardant, a compatilizer, an antioxidant, a lubricant and a toughening agent to prepare a mixture;
(2) and extruding and pelletizing the glass fiber, the carbon black and the mixture by using a screw extruder with the temperature of 245 ℃ and the length-diameter ratio of 30/45 to obtain the PTT/PA66 synthetic plastic.
In the step (1), the preparation method of the nano zinc oxide comprises the following steps:
(1) adding 100 liters of ionized water and 50kg of electronic grade zinc oxide into a grinding tank in sequence, stirring and circulating for 1.5 hours, cooling for 0.5 hour, and stirring and circulating for 1.5 hours to prepare a mixed solution; the ball in the grinding tank is an oxidation pickaxe ball with the diameter of 0.5-1 mm;
(2) adding adhesive into a dispersion tank, adding the mixed solution and the ionized water obtained after washing the grinding tank through a circulating pipe with an outlet provided with a 100-mesh screen, and stirring until the particle size D50 of the slurry is not more than 0.6 um;
(3) injecting the slurry with the solid content of 50-55 into a stock solution tank, and starting a diaphragm pump when the inlet temperature is 250 ℃; selecting a spraying piece with the thickness of 0.3-0.5 mm, placing the spraying piece into a spraying gun, placing the spraying gun into a granulation tower, opening a valve to start granulation, wherein the pressure of a diaphragm pump is 0.8-1.2 Mpa; wherein the temperature of a granulation outlet is kept at 115 ℃, and the negative pressure of granulation is kept between 3 and 6 MPa.
The results show that: all electrical property tests of the cured core group made of the material of the embodiment are qualified; and the injection molding material prepared in the embodiment 1 of the invention is subjected to a poaching test, a lightning impulse test, a thermal conductivity test, a thermal decomposition temperature test, a volume resistivity test and a surface resistance test respectively, after poaching, the U1mA change rate is less than or equal to 3%, the I0.75mA change rate is less than or equal to 3%, the voltage lightning impulse energy can endure large current 150KA, the thermal conductivity is 3.0W/m.k, and the resistivity is 1.7 multiplied by 10-3Omega/cm, surfaceThe resistance is 1.3 omega, and the thermal decomposition temperature is 3 percent when reaching 512 ℃.
In conclusion, the water absorption rate of the cured core group after the injection molding material is used is greatly reduced, the strength, the toughness, the mechanical property and the insulating property are greatly improved, and the sealing property and the water boiling property of the lightning arrester are definitely required in the IEEC international standard, so that the material guarantee is provided for the lightning arrester packaging structure to the maximum extent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The solidified core group injection molding material for the lightning arrester is characterized by comprising the following components in parts by weight: 20-30 parts of polytrimethylene terephthalate, 20-30 parts of nylon 6620-30 parts of glass fiber, 8-10 parts of carbon black, 5-10 parts of nano zinc oxide, 3-5 parts of a flame retardant, 1-3 parts of a compatilizer, 1-3 parts of an antioxidant, 1-2 parts of a lubricant and 2-3 parts of a toughening agent.
2. A method for preparing a cured core pack injection molding material for an arrester according to claim 1, comprising the steps of:
(1) mixing polytrimethylene terephthalate, nylon 66, nano zinc oxide, a flame retardant, a compatilizer, an antioxidant, a lubricant and a toughening agent to prepare a mixture;
(2) and extruding and pelletizing the glass fiber, the carbon black and the mixture by using a screw extruder with the temperature of 235-255 ℃ and the length-diameter ratio of 30/45 to obtain the PTT/PA66 synthetic plastic.
3. The method for preparing a cured core pack injection-molded material for an arrester according to claim 2, wherein the polytrimethylene terephthalate is polycondensed with terephthalic acid and 1, 3-propanediol in the step (1).
4. The method for preparing a cured core pack injection-molded material for a lightning arrester according to claim 2, wherein in the step (1), the solubilizer is ethylene-octene copolymer grafted maleic anhydride with a grafting rate of 1.0 to 1.3%.
5. The method for preparing the injection molding material of the cured core pack for the arrester as claimed in claim 2, wherein in the step (1), the toughening agent is polypropylene-blended two-way graft polystyrene with a grafting rate of 1.0-1.2% or ethylene-butylene copolymer-grafted maleic anhydride with a grafting rate of 0.8-1.5%.
6. The method for preparing a cured core pack injection molding material for a lightning arrester according to claim 2, wherein the method for preparing nano zinc oxide in the step (1) comprises the steps of:
(1) adding 100 liters of ionized water and 50kg of electronic grade zinc oxide into a grinding tank in sequence, stirring and circulating for 1.5 hours, cooling for 0.5 hour, and stirring and circulating for 1.5 hours to prepare a mixed solution;
(2) adding adhesive into a dispersion tank, adding the mixed solution and the ionized water obtained after washing the grinding tank through a circulating pipe with an outlet provided with a 100-mesh screen, and stirring until the particle size D50 of the slurry is not more than 0.6 um;
(3) injecting the slurry with the solid content of 50-55 into a stock solution tank, and starting a diaphragm pump when the inlet temperature is 250 ℃; and (3) selecting a spraying piece with the thickness of 0.3-0.5 mm, placing the spraying piece into a spray gun, placing the spray gun into a granulation tower, and opening a valve to start granulation, wherein the pressure of a diaphragm pump is 0.8-1.2 Mpa.
7. The method for preparing a cured core pack injection molding material for a lightning arrester according to claim 6, wherein the ball in the grinding pot is an oxidation pick ball of 0.5 to 1 mm.
8. The method for preparing a solidified core pack injection molding material for a lightning arrester according to claim 6, wherein the granulation outlet temperature is maintained at 110 to 120 ℃, and the negative pressure of granulation is maintained at 3 to 6 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011500308.4A CN112679919A (en) | 2020-12-18 | 2020-12-18 | Solidified core group injection molding material for lightning arrester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011500308.4A CN112679919A (en) | 2020-12-18 | 2020-12-18 | Solidified core group injection molding material for lightning arrester |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015028155A (en) * | 2013-06-28 | 2015-02-12 | 東レ株式会社 | Polyamide resin composition |
| CN106519662A (en) * | 2016-11-21 | 2017-03-22 | 上海金发科技发展有限公司 | Antistatic anti-flaming polyamide compound and preparation method thereof |
| CN208538585U (en) * | 2018-08-02 | 2019-02-22 | 云南华电巡检司发电有限公司 | A kind of 220KV and the above Zinc-Oxide Arrester |
| CN110272275A (en) * | 2019-05-27 | 2019-09-24 | 国网湖南省电力有限公司 | Zinc oxide resistance sheet and preparation method thereof |
-
2020
- 2020-12-18 CN CN202011500308.4A patent/CN112679919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015028155A (en) * | 2013-06-28 | 2015-02-12 | 東レ株式会社 | Polyamide resin composition |
| CN106519662A (en) * | 2016-11-21 | 2017-03-22 | 上海金发科技发展有限公司 | Antistatic anti-flaming polyamide compound and preparation method thereof |
| CN208538585U (en) * | 2018-08-02 | 2019-02-22 | 云南华电巡检司发电有限公司 | A kind of 220KV and the above Zinc-Oxide Arrester |
| CN110272275A (en) * | 2019-05-27 | 2019-09-24 | 国网湖南省电力有限公司 | Zinc oxide resistance sheet and preparation method thereof |
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| Title |
|---|
| 胡扬剑 等: "《高分子材料与加工实验教程》", 30 June 2019, 西南交通大学出版社 * |
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