CN111180221A - Resin-based carbon fiber composite permanent magnet conductive contact and manufacturing method thereof - Google Patents
Resin-based carbon fiber composite permanent magnet conductive contact and manufacturing method thereof Download PDFInfo
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- CN111180221A CN111180221A CN202010009256.4A CN202010009256A CN111180221A CN 111180221 A CN111180221 A CN 111180221A CN 202010009256 A CN202010009256 A CN 202010009256A CN 111180221 A CN111180221 A CN 111180221A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
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Abstract
The invention discloses a resin-based carbon fiber composite permanent magnetic conductive contact and a manufacturing method thereof, wherein the composite permanent magnetic conductive contact consists of three parts: the conductive core comprises a sleeve, a conductive core body and a coil, wherein a magnetic core in the conductive core body is a cylindrical rubidium iron boron permanent magnetic core, a conductor compounded in the conductive core body is an aniline modified carbon fiber aluminum core composite wire, and the magnetic core and the conductor are packaged and cured into the conductive core body through epoxy resin, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending vulcanized rubber; the coil is an aniline modified carbon fiber aluminum core composite wire wound on the inner surface of the sleeve. The invention has the advantages of soft nature, light weight, fatigue resistance, impact resistance, corrosion resistance and good adhesion.
Description
Technical Field
The invention relates to the technical field of electrical devices, in particular to a resin-based carbon fiber composite permanent magnet conductive contact and a manufacturing method thereof.
Background
The composite electrode for water environment is a special part used in high temperature environment, at present, ruthenium is coated on the surface of a titanium plate, the thickness of a ruthenium layer is about 100 mu m, the titanium plate is an anode, and the ruthenium layer is a cathode. However, since both titanium and ruthenium are noble metals, the composite electrode is very expensive and difficult to be accepted by users, and the composite electrode is easily corroded, thereby limiting the application field thereof. Therefore, it is very important to develop a new composite electrode. In view of the situation, the resin composite electrode can better solve the defects of the titanium/ruthenium composite electrode.
The polymer conductive composite material has the advantages of good flexibility, large strain detection range and low cost. However, the existing sensors based on polymer conductive composite materials generally have the defects of obvious hysteresis, low linearity and poor stability of conductive networks, and in addition, the explanation of the conductive mechanism of some composite materials in the process of strain also has defects. Therefore, in recent years, many researchers have conducted a great deal of research work on the analysis of the conductive mechanism of the polymer conductive composite material, the characteristics of different conductive fillers, the specific characteristics of the polymer, different preparation processes and the like. In explaining the conduction mechanism of the polymer conductive composite material, the current conduction process is mostly explained by adopting the percolation theory. The conductive fillers used in the current polymer conductive composite materials are mainly divided into two categories of carbon conductive fillers and metal conductive fillers, and the carbon conductive fillers are the mainstream of the current use due to good electrical stability and low price of the carbon conductive fillers. The polymer matrix used at present is mainly divided into three categories, namely silicone rubber, natural rubber and polyurethane, wherein the silicone rubber is mainly used for sensors with small strain and high sensitivity, and the natural rubber is mainly used for sensors with large strain. The preparation process of the polymer conductive composite material mainly comprises three types, namely filling type, sandwich type and adsorption type, wherein the strain range of the filling type sensor is larger, and the strain ranges of the sandwich type sensor and the adsorption type sensor are smaller. The general conductive mechanism, conductive filler, polymer matrix and different preparation processes of the polymer conductive composite material are summarized and analyzed, and finally possible research hotspots and development trends of the polymer conductive composite material for flexible strain sensing are expected in the future.
Therefore, a resin-based carbon fiber composite permanent magnet conductive contact which is soft in nature, light in weight, fatigue-resistant, impact-resistant, corrosion-resistant and well-fitted and a manufacturing method thereof are urgently needed in the market.
Disclosure of Invention
The invention aims to provide a method for manufacturing a resin-based carbon fiber composite permanent magnet conductive contact which is soft in nature, light in weight, anti-fatigue, anti-impact, corrosion-resistant and well attached.
In order to achieve the purpose, the invention adopts the following technical scheme: a manufacturing method of a resin-based carbon fiber composite permanent magnetic conductive contact comprises the following steps:
1) raw material preparation
preparing 20-25 parts of cylindrical rubidium-iron-boron magnetic core, sufficient thionyl chloride, sufficient phenylenediamine, 100-120 parts of epoxy resin, 15-20 parts of secondary medium-temperature epoxy resin curing agent, 1-1.5 parts of starch grafted sodium acrylate, 0.8-1 part of vulcanizing agent, 1-1.5 parts of silane coupling agent, 5-8 parts of graphite powder, sufficient carbon fiber-aluminum core composite wire and 0.2-0.5 part of ammonium persulfate initiator according to parts by weight;
preparing auxiliary materials, namely preparing enough mixed solution of concentrated sulfuric acid and concentrated nitric acid according to the volume ratio of 3: 1 and enough hydrochloric acid aqueous solution with 10% solute mass fraction;
2) glue pool preparation
①, preparing the epoxy resin prepared in the step 1), the sub-intermediate temperature epoxy resin curing agent and the starch grafted sodium acrylate into an original mixed glue molten pool in a mechanical blending mode;
gradually adding the graphite powder prepared in the step 1) into the original mixed glue molten pool obtained in the step ①, and uniformly stirring to obtain a prefabricated mixed glue molten pool;
gradually adding the vulcanizing agent and the silane coupling agent prepared in the step ① into the prefabricated mixed glue melting pool obtained in the step ②, and uniformly stirring to obtain a pre-reaction melting pool;
3) wire preparation
② completely immersing the carbon fiber aluminum core composite wire prepared in the step ② in the mixed solution of concentrated sulfuric acid and concentrated nitric acid prepared in the step two, treating the mixed solution by using 200W-250W ultrasonic waves for 3.5h-4h to obtain a carboxylated passivated composite wire, and rinsing the composite wire by using clear water;
immersing the carboxylated passivated composite wire obtained in the step ① into the hydrochloric acid aqueous solution prepared in the step ② in the step 1), immersing the hydrochloric acid aqueous solution into an ice bath at the temperature of minus 5 ℃ to minus 10 ℃, starting stirring at the speed of 120rpm/min to 150rpm/min, then sequentially reacting with the thionyl chloride and the phenylenediamine prepared in the step ①) in the step 1) until the temperature is stable, finally putting the ammonium persulfate initiator prepared in the step ① in the step 1) in the reaction solution at the mass speed of 10%/min, stirring for 40min to 50min, taking out the reaction solution, standing for 0.5 to 1 day in a refrigerator at the temperature of minus 5 ℃ to minus 10 ℃, filtering out a cured substance, and respectively rinsing with ethanol and water until the cured substance is rinsed to obtain the modified composite wire;
4) core preparation
arranging the modified composite wires obtained in the stage 3) on the cylindrical surface of the rubidium-iron-boron magnetic core in a circumferentially uniform distribution mode along the direction parallel to the axis of the cylindrical rubidium-iron-boron magnetic core, wherein the number of the modified composite wires in one circle is 12-20, the heads and the tails of the modified composite wires exceed the end surface of the cylindrical rubidium-iron-boron magnetic core, taking out part of glue solution from a pre-reaction molten pool obtained in the stage 2), brushing the glue solution on the surface of the cylindrical rubidium-iron-boron magnetic core, and curing a combined structure to obtain a combined permanent magnetic core body;
5) resin-based carbon fiber composite permanent magnet conductive contact forming
intercepting a cylindrical glue solution which is adapted to a cylindrical rubidium-iron-boron magnetic core and is enlarged by 30% -50% in diameter from a pre-reaction molten pool obtained in the step 2), then cutting off a tip of a composite wire of the combined permanent magnet core obtained in the step 4) after the front end is drawn, diffusing the rear end to the direction far away from the axis of the cylindrical rubidium-iron-boron magnetic core, cutting off the tail end, then immersing the composite wire into a container, and curing by adopting a process of preserving heat for 1h-1.5h at 70 ℃ -80 ℃ to obtain a primary cured core material;
cutting off the head and tail ends of the modified composite wire obtained in the stage 3), and winding the cut modified composite wire on the surface of the primary cured core material to obtain a composite core structure;
brushing the surface of the composite core structure obtained in the step 2) with the pre-reaction molten pool liquid obtained in the step ②, and performing secondary curing by adopting the parameters of 70-80 ℃ and heat preservation for 2-2.5 h to obtain the required resin-based carbon fiber composite permanent magnet conductive contact.
A resin-based carbon fiber composite permanent magnetic conductive contact is composed of two parts: the core body is a cylindrical rubidium iron boron permanent magnetic core, the conductor is an aniline modified carbon fiber aluminum core composite wire, and epoxy resin, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending secondary vulcanized rubber are used as the composite core body of the packaging curing material; the coil is composed of aniline modified carbon fiber aluminum core composite wires wound on the surface of the core body, epoxy resin for curing the coil, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending primary vulcanized rubber.
Compared with the prior art, the invention has the following advantages: (1) the invention adopts the structure which is not adopted by the conventional permanent magnet contact, namely the movable permanent magnet conductive composite core body which is packaged by the flexible conductive material in a wrapping way and the conductive coil which is matched with the composite material and guides the permanent magnet conductive composite core body to do work, namely the whole soft collision core body is obtained. (2) Except for being used as a magnetic core made of permanent magnetic materials, all the materials of the invention have the density far lower than that of the conventional metal materials and the weight is light, so the kinetic energy requirement for inducing the motion of the invention is lower than that of the conventional technology, and higher reliability (namely lower electric energy output can be induced) and lower energy consumption are obtained. (3) The invention is different from the problem of repeated metal bending in the conventional technology, and is completed through the elastic deformation of the carbon fiber aluminum core composite wire with good flexibility and tensile strength in the working state of a long thread, so the invention is essentially anti-fatigue. (4) The core body of the invention is a flexible collision body, and meanwhile, the core body has light weight, low impact kinetic energy and flexible buffering, so the invention has good impact resistance. (5) The coating material matrix is epoxy resin with stable chemical properties, and then functional auxiliary materials are oil-resistant and acid-alkali-resistant materials, so that compared with a contact structure realized by a metal material, the contact structure is obviously more corrosion-resistant, higher in reliability and longer in service life. Therefore, the invention has the characteristics of soft nature, light weight, fatigue resistance, impact resistance, corrosion resistance and good fitting.
Detailed Description
Example 1:
a resin-based carbon fiber composite permanent magnetic conductive contact is composed of two parts: the core body is a cylindrical rubidium iron boron permanent magnetic core, the conductor is an aniline modified carbon fiber aluminum core composite wire, and epoxy resin, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending secondary vulcanized rubber are used as the composite core body of the packaging curing material; the coil is composed of aniline modified carbon fiber aluminum core composite wires wound on the surface of the core body, epoxy resin for curing the coil, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending primary vulcanized rubber;
the manufacturing method of the conductive contact comprises the following steps:
1) raw material preparation
preparing 220g of cylindrical rubidium-iron-boron magnetic core, enough thionyl chloride, enough phenylenediamine, 1050g of epoxy resin, 180g of sub-intermediate temperature epoxy resin curing agent, 12g of starch grafted sodium acrylate, 9g of vulcanizing agent, 12g of silane coupling agent, 72g of graphite powder, enough carbon fiber-aluminum core composite wire and 4g of ammonium persulfate initiator according to parts by weight;
preparing auxiliary materials, namely preparing enough mixed solution of concentrated sulfuric acid and concentrated nitric acid according to the volume ratio of 3: 1 and enough hydrochloric acid aqueous solution with 10% solute mass fraction;
2) glue pool preparation
①, preparing the epoxy resin prepared in the step 1), the sub-intermediate temperature epoxy resin curing agent and the starch grafted sodium acrylate into an original mixed glue molten pool in a mechanical blending mode;
gradually adding the graphite powder prepared in the step 1) into the original mixed glue molten pool obtained in the step ①, and uniformly stirring to obtain a prefabricated mixed glue molten pool;
gradually adding the vulcanizing agent and the silane coupling agent prepared in the step ① into the prefabricated mixed glue melting pool obtained in the step ②, and uniformly stirring to obtain a pre-reaction melting pool;
3) wire preparation
② completely immersing the carbon fiber aluminum core composite wire prepared in the step ② in the mixed solution of concentrated sulfuric acid and concentrated nitric acid prepared in the step two, treating the mixed solution by using 200W-250W ultrasonic waves for 3.5h-4h to obtain a carboxylated passivated composite wire, and rinsing the composite wire by using clear water;
immersing the carboxylated passivated composite wire obtained in the step ① into the hydrochloric acid aqueous solution prepared in the step ② in the step 1), immersing the hydrochloric acid aqueous solution into an ice bath at the temperature of minus 5 ℃ to minus 10 ℃, starting stirring at the speed of 120rpm/min to 150rpm/min, then sequentially reacting with the thionyl chloride and the phenylenediamine prepared in the step ①) in the step 1) until the temperature is stable, finally putting the ammonium persulfate initiator prepared in the step ① in the step 1) in the reaction solution at the mass speed of 10%/min, stirring for 40min to 50min, taking out the reaction solution, standing for 0.5 to 1 day in a refrigerator at the temperature of minus 5 ℃ to minus 10 ℃, filtering out a cured substance, and respectively rinsing with ethanol and water until the cured substance is rinsed to obtain the modified composite wire;
4) core preparation
arranging the modified composite wires obtained in the stage 3) on the cylindrical surface of the rubidium-iron-boron magnetic core in a circumferentially uniform distribution mode along the direction parallel to the axis of the cylindrical rubidium-iron-boron magnetic core, wherein the number of the modified composite wires in one circle is 12-20, the heads and the tails of the modified composite wires exceed the end surface of the cylindrical rubidium-iron-boron magnetic core, taking out part of glue solution from a pre-reaction molten pool obtained in the stage 2), brushing the glue solution on the surface of the cylindrical rubidium-iron-boron magnetic core, and curing a combined structure to obtain a combined permanent magnetic core body;
5) resin-based carbon fiber composite permanent magnet conductive contact forming
intercepting a cylindrical glue solution which is adapted to a cylindrical rubidium-iron-boron magnetic core and is enlarged by 30% -50% in diameter from a pre-reaction molten pool obtained in the step 2), then cutting off a tip of a composite wire of the combined permanent magnet core obtained in the step 4) after the front end is drawn, diffusing the rear end to the direction far away from the axis of the cylindrical rubidium-iron-boron magnetic core, cutting off the tail end, then immersing the composite wire into a container, and curing by adopting a process of preserving heat for 1h-1.5h at 70 ℃ -80 ℃ to obtain a primary cured core material;
cutting off the head and tail ends of the modified composite wire obtained in the stage 3), and winding the cut modified composite wire on the surface of the primary cured core material to obtain a composite core structure;
brushing the surface of the composite core structure obtained in the step 2) with the pre-reaction molten pool liquid obtained in the step ②, and performing secondary curing by adopting the parameters of 70-80 ℃ and heat preservation for 2-2.5 h to obtain the required resin-based carbon fiber composite permanent magnet conductive contact.
Example 2:
the whole is in accordance with example 1, with the difference that:
preparing 250g of cylindrical rubidium-iron-boron magnetic core, enough thionyl chloride, enough phenylenediamine, 1000g of epoxy resin, 150g of sub-medium temperature epoxy resin curing agent, 10g of starch grafted sodium acrylate, 8g of vulcanizing agent, 10g of silane coupling agent, 50g of graphite powder, enough carbon fiber-aluminum core composite wire and 2g of ammonium persulfate initiator according to parts by weight;
example 3:
the whole is in accordance with example 1, with the difference that:
preparing 200g of cylindrical rubidium-iron-boron magnetic core, enough thionyl chloride, enough phenylenediamine, 1000g of epoxy resin, 200g of sub-medium temperature epoxy resin curing agent, 15g of starch grafted sodium acrylate, 10g of vulcanizing agent, 15g of silane coupling agent, 80g of graphite powder, enough carbon fiber-aluminum core composite wire and 5g of ammonium persulfate initiator according to parts by weight;
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A manufacturing method of a resin-based carbon fiber composite permanent magnet conductive contact is characterized by comprising the following steps:
1) raw material preparation
preparing 20-25 parts of cylindrical rubidium-iron-boron magnetic core, sufficient thionyl chloride, sufficient phenylenediamine, 100-120 parts of epoxy resin, 15-20 parts of secondary medium-temperature epoxy resin curing agent, 1-1.5 parts of starch grafted sodium acrylate, 0.8-1 part of vulcanizing agent, 1-1.5 parts of silane coupling agent, 5-8 parts of graphite powder, sufficient carbon fiber-aluminum core composite wire, 0.2-0.5 part of ammonium persulfate initiator and a fixed sleeve according to parts by weight;
preparing auxiliary materials, namely preparing enough mixed solution of concentrated sulfuric acid and concentrated nitric acid according to the volume ratio of 3: 1 and enough hydrochloric acid aqueous solution with 10% solute mass fraction;
2) glue pool preparation
①, preparing the epoxy resin prepared in the step 1), the sub-intermediate temperature epoxy resin curing agent and the starch grafted sodium acrylate into an original mixed glue molten pool in a mechanical blending mode;
gradually adding the graphite powder prepared in the step 1) into the original mixed glue molten pool obtained in the step ①, and uniformly stirring to obtain a prefabricated mixed glue molten pool;
gradually adding the vulcanizing agent and the silane coupling agent prepared in the step ① into the prefabricated mixed glue melting pool obtained in the step ②, and uniformly stirring to obtain a pre-reaction melting pool;
3) wire preparation
② completely immersing the carbon fiber aluminum core composite wire prepared in the step ② in the mixed solution of concentrated sulfuric acid and concentrated nitric acid prepared in the step two, treating the mixed solution by using 200W-250W ultrasonic waves for 3.5h-4h to obtain a carboxylated passivated composite wire, and rinsing the composite wire by using clear water;
immersing the carboxylated passivated composite wire obtained in the step ① into the hydrochloric acid aqueous solution prepared in the step ② in the step 1), immersing the hydrochloric acid aqueous solution into an ice bath at the temperature of minus 5 ℃ to minus 10 ℃, starting stirring at the speed of 120rpm/min to 150rpm/min, then sequentially reacting with the thionyl chloride and the phenylenediamine prepared in the step ①) in the step 1) until the temperature is stable, finally putting the ammonium persulfate initiator prepared in the step ① in the step 1) in the reaction solution at the mass speed of 10%/min, stirring for 40min to 50min, taking out the reaction solution, standing for 0.5 to 1 day in a refrigerator at the temperature of minus 5 ℃ to minus 10 ℃, filtering out a cured substance, and respectively rinsing with ethanol and water until the cured substance is rinsed to obtain the modified composite wire;
4) core preparation
arranging the modified composite wires obtained in the stage 3) on the cylindrical surface of the rubidium-iron-boron magnetic core in a circumferentially uniform distribution mode along the direction parallel to the axis of the cylindrical rubidium-iron-boron magnetic core, wherein the number of the modified composite wires in one circle is 12-20, the heads and the tails of the modified composite wires exceed the end surface of the cylindrical rubidium-iron-boron magnetic core, taking out part of glue solution from a pre-reaction molten pool obtained in the stage 2), brushing the glue solution on the surface of the cylindrical rubidium-iron-boron magnetic core, and curing a combined structure to obtain a combined permanent magnetic core body;
5) resin-based carbon fiber composite permanent magnet conductive contact forming
intercepting a cylindrical glue solution which is adapted to a cylindrical rubidium-iron-boron magnetic core and is enlarged by 30% -50% in diameter from a pre-reaction molten pool obtained in the step 2), then cutting off a tip of a composite wire of the combined permanent magnet core obtained in the step 4) after the front end is drawn, diffusing the rear end to the direction far away from the axis of the cylindrical rubidium-iron-boron magnetic core, cutting off the tail end, then immersing the composite wire into the container, and curing by adopting a process of preserving heat for 2h-2.5h at 70 ℃ -80 ℃ to obtain a primary cured core material;
and secondly, taking the initially-cured core material obtained in the step I as a moving core body, sleeving the initially-cured core material in the middle of the fixed sleeve prepared in the step 1), cutting the head and the tail of the modified composite wire obtained in the step 3), winding the modified composite wire close to the inner surface of the sleeve, keeping the wound modified composite wire out of contact with the moving core body, and combining and fixing the obtained whole to obtain the required resin-based carbon fiber composite permanent magnet conductive contact.
2. A resin-based carbon fiber composite permanent magnet conductive contact is characterized in that: the composite permanent magnetic conductive contact consists of three parts: the conductive core comprises a sleeve, a conductive core body and a coil, wherein a magnetic core in the conductive core body is a cylindrical rubidium iron boron permanent magnetic core, a conductor compounded in the conductive core body is an aniline modified carbon fiber aluminum core composite wire, and the magnetic core and the conductor are packaged and cured into the conductive core body through epoxy resin, a sub-medium temperature epoxy resin curing agent and starch grafted sodium acrylate mechanical blending vulcanized rubber; the coil is an aniline modified carbon fiber aluminum core composite wire wound on the inner surface of the sleeve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009256.4A CN111180221A (en) | 2020-01-06 | 2020-01-06 | Resin-based carbon fiber composite permanent magnet conductive contact and manufacturing method thereof |
| PCT/CN2020/138489 WO2021139529A1 (en) | 2020-01-06 | 2020-12-23 | Resin-based carbon fiber composite permanent magnet conductive contact and fabrication method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009256.4A CN111180221A (en) | 2020-01-06 | 2020-01-06 | Resin-based carbon fiber composite permanent magnet conductive contact and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN111180221A true CN111180221A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010009256.4A Withdrawn CN111180221A (en) | 2020-01-06 | 2020-01-06 | Resin-based carbon fiber composite permanent magnet conductive contact and manufacturing method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN111180221A (en) |
| WO (1) | WO2021139529A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927262A (en) * | 2022-06-02 | 2022-08-19 | 广东鑫源恒业电力线路器材有限公司 | Magnetic composite material core for composite material core overhead conductor and preparation method thereof |
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| US5412057A (en) * | 1994-02-15 | 1995-05-02 | The Dow Chemical Company | Mesogen-containing aromatic anhydride compounds |
| CN2396492Y (en) * | 1999-08-27 | 2000-09-13 | 汕头经济特区南粤电器有限公司 | Front-mounted current transformer for switch cubicle |
| JP5376137B2 (en) * | 2009-04-27 | 2013-12-25 | 三菱瓦斯化学株式会社 | Curable resin composition |
| CN107286860B (en) * | 2017-06-20 | 2019-03-22 | 上海榕珍贸易有限公司 | A kind of liquid crystal modified epoxy adhesive and preparation method thereof with conductive switch performance |
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2020
- 2020-01-06 CN CN202010009256.4A patent/CN111180221A/en not_active Withdrawn
- 2020-12-23 WO PCT/CN2020/138489 patent/WO2021139529A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05168187A (en) * | 1991-12-19 | 1993-07-02 | Fujitsu General Ltd | Structure of connecting conductor of motor |
| CN1134636A (en) * | 1995-04-26 | 1996-10-30 | 王则林 | Electromagnetic inductive contactless data transmission interface |
| CN1739176A (en) * | 2002-11-19 | 2006-02-22 | 亨特来夫工业技术公开发行股份有限公司 | Connector with inductive coupling |
| CN106479293A (en) * | 2016-11-10 | 2017-03-08 | 无锡市明盛强力风机有限公司 | A kind of carbon fiber electromagnetic screen coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114927262A (en) * | 2022-06-02 | 2022-08-19 | 广东鑫源恒业电力线路器材有限公司 | Magnetic composite material core for composite material core overhead conductor and preparation method thereof |
| CN114927262B (en) * | 2022-06-02 | 2023-10-31 | 广东鑫源恒业电力线路器材有限公司 | Magnetic composite material core for composite material core overhead conductor and preparation method thereof |
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| WO2021139529A1 (en) | 2021-07-15 |
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Application publication date: 20200519 |
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| WW01 | Invention patent application withdrawn after publication |