CN112259977B - Binding post that traction force is strong easily dispels heat - Google Patents
Binding post that traction force is strong easily dispels heat Download PDFInfo
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- CN112259977B CN112259977B CN202011120350.3A CN202011120350A CN112259977B CN 112259977 B CN112259977 B CN 112259977B CN 202011120350 A CN202011120350 A CN 202011120350A CN 112259977 B CN112259977 B CN 112259977B
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- connecting terminal
- asphalt
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- etamsylate
- stirring
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims abstract description 21
- 239000010426 asphalt Substances 0.000 claims description 116
- 239000000835 fiber Substances 0.000 claims description 116
- 239000000243 solution Substances 0.000 claims description 74
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 42
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 42
- 229920001721 polyimide Polymers 0.000 claims description 41
- 239000004642 Polyimide Substances 0.000 claims description 39
- 229920005575 poly(amic acid) Polymers 0.000 claims description 39
- 239000000178 monomer Substances 0.000 claims description 38
- 238000003756 stirring Methods 0.000 claims description 38
- HBGOLJKPSFNJSD-UHFFFAOYSA-N Etamsylate Chemical compound CC[NH2+]CC.OC1=CC=C(O)C(S([O-])(=O)=O)=C1 HBGOLJKPSFNJSD-UHFFFAOYSA-N 0.000 claims description 37
- 229960004817 etamsylate Drugs 0.000 claims description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 26
- 239000011259 mixed solution Substances 0.000 claims description 23
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 22
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 150000004985 diamines Chemical class 0.000 claims description 19
- 239000004020 conductor Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 15
- 239000005051 trimethylchlorosilane Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 11
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000008213 purified water Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 6
- 238000002390 rotary evaporation Methods 0.000 claims description 6
- 238000005476 soldering Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- VQVIHDPBMFABCQ-UHFFFAOYSA-N 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione Chemical compound C1=C2C(=O)OC(=O)C2=CC(C(C=2C=C3C(=O)OC(=O)C3=CC=2)=O)=C1 VQVIHDPBMFABCQ-UHFFFAOYSA-N 0.000 claims description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 125000006158 tetracarboxylic acid group Chemical group 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920013822 aminosilicone Polymers 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 125000006160 pyromellitic dianhydride group Chemical group 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical class [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- VACCAVUAMIDAGB-UHFFFAOYSA-N sulfamethizole Chemical compound S1C(C)=NN=C1NS(=O)(=O)C1=CC=C(N)C=C1 VACCAVUAMIDAGB-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of wiring terminals, in particular to a wiring terminal with strong traction force and easy heat dissipation, which comprises a first wiring terminal and a second wiring terminal, wherein one end of the first wiring terminal is provided with a convex block, one end of the second wiring terminal is provided with a through hole, and the convex block extends into the through hole to form a detachable connection structure; the other end of the first wiring terminal is connected with the other end of the second wiring terminal through a reinforcing rib, and the reinforcing rib, the first wiring terminal and the second wiring terminal form a triangular structure. Compared with the common wiring terminal, the connection mode of the invention is firmer, the invention has stronger traction force, the installation is more convenient, and the heat radiation performance is more excellent.
Description
Technical Field
The invention relates to the field of wiring terminals, in particular to a wiring terminal with strong traction force and easy heat dissipation.
Background
The wiring terminal is an accessory product for realizing electrical connection, the category of the connector is divided into in the industry, along with the industrial automation degree is higher and the industrial control requirement is stricter and stricter, and is accurate, the use amount of the wiring terminal gradually rises, along with the development of the electronic industry, the use range of the wiring terminal is more and more, and the types are more and more, the wire terminal of the existing cable wiring mainly comprises an insulating shell and an internal conductor, the heat productivity of the contact part of the insulating shell and the internal conductor is larger, particularly, the common breaker with large rated current is poor in heat dissipation condition when in use, the current is required to be reduced, the aging of the insulating shell can be accelerated under the long-term working condition, the product performance is influenced, and even the shell is burnt and melted. In addition, traditional terminal connection location is usually not firm enough, causes the construction degree of difficulty big, and the joint internal stress grow, and traction force is less.
Disclosure of Invention
Aiming at the problems, the invention provides a connecting terminal with strong traction force and easy heat dissipation, which comprises a first connecting terminal and a second connecting terminal, wherein a convex block is arranged at one end of the first connecting terminal, a through hole is arranged at one end of the second connecting terminal, and the convex block extends into the through hole to form a detachable connecting structure; the other end of the first wiring terminal is connected with the other end of the second wiring terminal through a reinforcing rib, and the reinforcing rib, the first wiring terminal and the second wiring terminal form a triangular structure.
Preferably, the first connecting terminal, the second connecting terminal and the reinforcing rib are made of the same material and are respectively composed of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide.
Preferably, a plurality of heat dissipation holes are formed in the first wiring terminal and the second wiring terminal.
Preferably, the reinforcing rib and the first wiring terminal, and the reinforcing rib and the second wiring terminal are fixedly connected through bolts.
Preferably, the surface of the reinforcing rib is provided with a plurality of strip-shaped grooves for injecting soldering tin and dissipating heat.
Preferably, the material of the internal electrical conductor is one or more of copper, aluminum and nickel.
Preferably, the modified polyimide is obtained by modifying polyimide with phenol sulfonated asphalt fiber.
Preferably, the preparation method of the phenol sulfonated asphalt fiber comprises the following steps:
(1) preparing hydroxylated asphalt fibers:
weighing asphalt fibers, placing the asphalt fibers at a temperature of between 40 ℃ below zero and 20 ℃ below zero, drying the asphalt fibers in vacuum for 24 to 48 hours, then adding the asphalt fibers into N, N-dimethylformamide, and stirring the mixture until the mixture is uniform to obtain an asphalt fiber mixed solution; dropwise adding an ethanol solution of sodium hydroxide with the mass concentration of 1mol/L into the asphalt fiber solution, stirring while dropwise adding, after dropwise adding, heating to 70-80 ℃, carrying out reflux stirring reaction for 1-3 h, cooling to room temperature, adding deionized water, standing for 8-12 h at 0-4 ℃, filtering to obtain a solid, washing with purified water for three times, and drying under reduced pressure to obtain hydroxylated asphalt fibers;
wherein the mass ratio of the asphalt fibers to the N, N-dimethylformamide is 1: 5-15; the mass ratio of the ethanol solution of sodium hydroxide to the asphalt fiber solution to the deionized water is 1: 12-18: 10-15;
(2) adding etamsylate for grafting:
weighing etamsylate, adding the etamsylate into deionized water, and stirring in a dark condition until the etamsylate is completely dissolved to obtain an etamsylate solution; adding the hydroxylated asphalt fiber into the phenolsulfoethylamine solution, performing ultrasonic dispersion until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, heating to 120-150 ℃, performing sealed reaction for 10-15 hours, filtering to obtain a solid, washing the solid with purified water for three times, and drying in an oven at 80-100 ℃ to obtain the phenol sulfonated asphalt fiber;
wherein the mass ratio of the etamsylate to the deionized water is 1: 5-10; the mass ratio of the hydroxylated asphalt fibers to the etamsylate solution is 1: 8-15.
Preferably, the preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.1-1.2; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 14-20;
s2, adding the phenol sulfonated asphalt fiber into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain a phenol sulfonated asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the phenol sulfonated asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and removing the solvent by rotary evaporation to obtain modified polyimide;
wherein the mass ratio of the phenol sulfonated asphalt fiber to the absolute ethyl alcohol is 1: 5-10; the mass ratio of the phenol sulfonated asphalt fiber mixed solution to the low-concentration polyamic acid solution is 1: 4.2-8.5.
Preferably, the diamine monomer is one or more of diaminodiphenyl ether, amino-terminated siloxane and amino silicone oil.
Preferably, the dianhydride monomer is one or more of pyromellitic dianhydride, diphenyl ether tetracarboxylic dianhydride and benzophenone tetracarboxylic dianhydride.
The invention has the beneficial effects that:
1. according to the connecting terminal with strong traction force and easy heat dissipation, the first connecting terminal and the second connecting terminal are fixed by adopting a stable triangular structure, wherein the first connecting terminal and the second connecting terminal are connected by adopting the buckles at a certain angle, so that the internal stress generated at the joint of the terminals can be reduced, the traction force is enhanced, and the connecting terminal is suitable for connection of heavy cables. Still be provided with on the strengthening rib and be used for annotating soldering tin and radiating bar groove, make it further increase of heat dispersion under the condition that does not influence terminal work. Compared with the common wiring terminal, the invention has firmer connection mode, stronger traction force and more convenient installation.
2. The wiring terminal is formed by combining the insulating shell and the internal conductor structure, and the terminal structure is provided with the heat dissipation holes which are arranged at equal intervals, so that the internal air and the external air of the wiring terminal can mutually circulate; meanwhile, the insulating shell is prepared from a modified polyimide material which has excellent mechanical property, high temperature resistance, high insulativity, strong cohesiveness and high peel strength; after both combine, more be convenient for conduct rapidly through the air replacement with the heat that produces in the course of the work to need not to install radiator fan or paste and cover the graphite flake, just can reduce the temperature effectively, ensured the high-efficient operation of high power machine, solved because of installing radiator fan or pasting and cover the volume increase that the graphite flake leads to display device, the volume that reduces binding post that can the great degree, make it can be applicable to in more accurate machine, promoted the competitiveness of enterprise.
3. The insulating shell is prepared from a modified polyimide material which has excellent mechanical property, high temperature resistance, high insulativity, strong cohesiveness and high peel strength. Polyimide is very suitable for being used on a wiring terminal which needs high insulation and high temperature resistance because of excellent mechanical property, high temperature resistance, low thermal expansion coefficient, high insulation and chemical stability, however, the polyimide film has a smooth surface and low free energy, so that the polyimide film has weak bonding property with other materials, and the peeling strength of the prepared material is low, so that the situations of falling off of an insulation shell and untight adhesion often occur in the application process. According to the invention, the modified polyimide is modified by preparing the phenol sulfonated asphalt fiber, and the obtained modified polyimide overcomes the defects of weak bonding property and low peeling strength on the basis of keeping the original mechanical property, high temperature resistance and high insulativity of the polyimide.
The preparation process of the modified polyimide comprises the following steps: firstly, drying asphalt fibers, adding the dried asphalt fibers into a solvent to prepare a mixed solution, then dripping sodium hydroxide in a heating state to carry out hydroxylation treatment, then adding deionized water, standing at a low temperature to completely dissolve out the hydroxylated asphalt fibers, and obtaining the hydroxylated asphalt fibers; then using etamsylate to react with the hydroxylated asphalt fiber, combining an amine group and a phenolsulfonic group in the etamsylate molecule with a hydroxyl group on the asphalt fiber, and further performing a grafting reaction to graft an ester group and a phenolsulfonic group on the surface of the asphalt fiber to obtain a phenolsulfonic asphalt fiber; diamine monomer and dianhydride monomer react to generate polyamic acid solution, trimethylchlorosilane is added to dilute the polyamic acid solution to a lower concentration, and then phenol sulfonated asphalt fiber and polyamic acid are added to mix and remove the solvent, so that the modified polyimide is obtained.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a terminal with strong traction force and easy heat dissipation according to the present invention;
fig. 2 is a schematic structural view of a first connection terminal and a second connection terminal of the present invention.
Reference numerals: first binding post 1, second binding post 2, strengthening rib 3, louvre 4, bolt 5, bar groove 6, lug 11 and through-hole 21.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A connecting terminal with strong traction force and easy heat dissipation comprises a first connecting terminal 1 and a second connecting terminal 2, wherein a convex block 11 is arranged at one end of the first connecting terminal 1, a through hole 21 is arranged at one end of the second connecting terminal 2, and the convex block 11 extends into the through hole 21 to form a detachable connecting structure; the other end of the first connecting terminal 1 is connected with the other end of the second connecting terminal 2 through a reinforcing rib 3, and the reinforcing rib 3, the first connecting terminal 1 and the second connecting terminal 2 form a triangular structure;
the first connecting terminal 1, the second connecting terminal 2 and the reinforcing rib 3 are made of the same material and are respectively composed of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide.
The first wiring terminal 1 and the second wiring terminal 2 are both provided with a plurality of heat dissipation holes 4.
The reinforcing rib 3 with first binding post 1 the reinforcing rib 3 with all through bolt 5 fixed connection between the second binding post 2.
The surface of the reinforcing rib 3 is provided with a plurality of strip-shaped grooves 6 for injecting soldering tin and dissipating heat.
The internal conductor is made of copper.
The modified polyimide is obtained by modifying polyimide with phenol sulfonated asphalt fiber.
The preparation method of the phenol sulfoated asphalt fiber comprises the following steps:
(1) preparing hydroxylated asphalt fibers:
weighing asphalt fibers, placing the asphalt fibers at a temperature of between 40 ℃ below zero and 20 ℃ below zero, drying the asphalt fibers in vacuum for 24 to 48 hours, then adding the asphalt fibers into N, N-dimethylformamide, and stirring the mixture until the mixture is uniform to obtain an asphalt fiber mixed solution; dropwise adding an ethanol solution of sodium hydroxide with the mass concentration of 1mol/L into the asphalt fiber solution, stirring while dropwise adding, after dropwise adding, heating to 70-80 ℃, carrying out reflux stirring reaction for 1-3 h, cooling to room temperature, adding deionized water, standing for 8-12 h at 0-4 ℃, filtering to obtain a solid, washing with purified water for three times, and drying under reduced pressure to obtain hydroxylated asphalt fibers;
wherein the mass ratio of the asphalt fibers to the N, N-dimethylformamide is 1: 10; the mass ratio of the ethanol solution of sodium hydroxide to the asphalt fiber solution to the deionized water is 1:15: 12;
(2) adding etamsylate for grafting:
weighing etamsylate, adding the etamsylate into deionized water, and stirring in a dark condition until the etamsylate is completely dissolved to obtain an etamsylate solution; adding the hydroxylated asphalt fiber into the phenolsulfoethylamine solution, performing ultrasonic dispersion until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, heating to 120-150 ℃, performing sealed reaction for 10-15 hours, filtering to obtain a solid, washing the solid with purified water for three times, and drying in an oven at 80-100 ℃ to obtain the phenol sulfonated asphalt fiber;
wherein the mass ratio of the etamsylate to the deionized water is 1: 8; the mass ratio of the hydroxylated asphalt fibers to the etamsylate solution is 1: 12.
The preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.15; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 17;
s2, adding the phenol sulfonated asphalt fiber into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain a phenol sulfonated asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the phenol sulfonated asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and removing the solvent by rotary evaporation to obtain modified polyimide;
wherein the mass ratio of the phenol sulfonated asphalt fiber to the absolute ethyl alcohol is 1: 8; the mass ratio of the phenol sulfonated asphalt fiber mixed liquid to the low-concentration polyamic acid solution is 1: 6.2.
The diamine monomer is diaminodiphenyl ether.
The dianhydride monomer is pyromellitic dianhydride.
Example 2
A connecting terminal with strong traction force and easy heat dissipation comprises a first connecting terminal 1 and a second connecting terminal 2, wherein a convex block 11 is arranged at one end of the first connecting terminal 1, a through hole 21 is arranged at one end of the second connecting terminal 2, and the convex block 11 extends into the through hole 21 to form a detachable connecting structure; the other end of the first connecting terminal 1 is connected with the other end of the second connecting terminal 2 through a reinforcing rib 3, and the reinforcing rib 3, the first connecting terminal 1 and the second connecting terminal 2 form a triangular structure;
the first connecting terminal 1, the second connecting terminal 2 and the reinforcing rib 3 are made of the same material and are respectively composed of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide.
The first wiring terminal 1 and the second wiring terminal 2 are both provided with a plurality of heat dissipation holes 4.
The reinforcing rib 3 with first binding post 1 the reinforcing rib 3 with all through bolt 5 fixed connection between the second binding post 2.
The surface of the reinforcing rib 3 is provided with a plurality of strip-shaped grooves 6 for injecting soldering tin and dissipating heat.
The internal conductor is made of aluminum-nickel alloy.
The modified polyimide is obtained by modifying polyimide with phenol sulfonated asphalt fiber.
The preparation method of the phenol sulfoated asphalt fiber comprises the following steps:
(1) preparing hydroxylated asphalt fibers:
weighing asphalt fibers, placing the asphalt fibers at a temperature of between 40 ℃ below zero and 20 ℃ below zero, drying the asphalt fibers in vacuum for 24 to 48 hours, then adding the asphalt fibers into N, N-dimethylformamide, and stirring the mixture until the mixture is uniform to obtain an asphalt fiber mixed solution; dropwise adding an ethanol solution of sodium hydroxide with the mass concentration of 1mol/L into the asphalt fiber solution, stirring while dropwise adding, after dropwise adding, heating to 70-80 ℃, carrying out reflux stirring reaction for 1-3 h, cooling to room temperature, adding deionized water, standing for 8-12 h at 0-4 ℃, filtering to obtain a solid, washing with purified water for three times, and drying under reduced pressure to obtain hydroxylated asphalt fibers;
wherein the mass ratio of the asphalt fibers to the N, N-dimethylformamide is 1: 5; the mass ratio of the ethanol solution of sodium hydroxide to the asphalt fiber solution to the deionized water is 1:12: 10;
(2) adding etamsylate for grafting:
weighing etamsylate, adding the etamsylate into deionized water, and stirring in a dark condition until the etamsylate is completely dissolved to obtain an etamsylate solution; adding the hydroxylated asphalt fiber into the phenolsulfoethylamine solution, performing ultrasonic dispersion until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, heating to 120-150 ℃, performing sealed reaction for 10-15 hours, filtering to obtain a solid, washing the solid with purified water for three times, and drying in an oven at 80-100 ℃ to obtain the phenol sulfonated asphalt fiber;
wherein the mass ratio of the etamsylate to the deionized water is 1: 5; the mass ratio of the hydroxylated asphalt fibers to the etamsylate solution is 1:8.
The preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.1; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 14;
s2, adding the phenol sulfonated asphalt fiber into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain a phenol sulfonated asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the phenol sulfonated asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and removing the solvent by rotary evaporation to obtain modified polyimide;
wherein the mass ratio of the phenol sulfonated asphalt fiber to the absolute ethyl alcohol is 1: 5; the mass ratio of the phenol sulfonated asphalt fiber mixed liquid to the low-concentration polyamic acid solution is 1: 4.2.
The diamine monomer is amino-terminated siloxane.
The dianhydride monomer is diphenyl ether tetracid dianhydride.
Example 3
A connecting terminal with strong traction force and easy heat dissipation comprises a first connecting terminal 1 and a second connecting terminal 2, wherein a convex block 11 is arranged at one end of the first connecting terminal 1, a through hole 21 is arranged at one end of the second connecting terminal 2, and the convex block 11 extends into the through hole 21 to form a detachable connecting structure; the other end of the first connecting terminal 1 is connected with the other end of the second connecting terminal 2 through a reinforcing rib 3, and the reinforcing rib 3, the first connecting terminal 1 and the second connecting terminal 2 form a triangular structure;
the first connecting terminal 1, the second connecting terminal 2 and the reinforcing rib 3 are made of the same material and are respectively composed of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide.
The first wiring terminal 1 and the second wiring terminal 2 are both provided with a plurality of heat dissipation holes 4.
The reinforcing rib 3 with first binding post 1 the reinforcing rib 3 with all through bolt 5 fixed connection between the second binding post 2.
The surface of the reinforcing rib 3 is provided with a plurality of strip-shaped grooves 6 for injecting soldering tin and dissipating heat.
The internal conductor is made of copper-nickel alloy.
The modified polyimide is obtained by modifying polyimide with phenol sulfonated asphalt fiber.
The preparation method of the phenol sulfoated asphalt fiber comprises the following steps:
(1) preparing hydroxylated asphalt fibers:
weighing asphalt fibers, placing the asphalt fibers at a temperature of between 40 ℃ below zero and 20 ℃ below zero, drying the asphalt fibers in vacuum for 24 to 48 hours, then adding the asphalt fibers into N, N-dimethylformamide, and stirring the mixture until the mixture is uniform to obtain an asphalt fiber mixed solution; dropwise adding an ethanol solution of sodium hydroxide with the mass concentration of 1mol/L into the asphalt fiber solution, stirring while dropwise adding, after dropwise adding, heating to 70-80 ℃, carrying out reflux stirring reaction for 1-3 h, cooling to room temperature, adding deionized water, standing for 8-12 h at 0-4 ℃, filtering to obtain a solid, washing with purified water for three times, and drying under reduced pressure to obtain hydroxylated asphalt fibers;
wherein the mass ratio of the asphalt fibers to the N, N-dimethylformamide is 1: 15; the mass ratio of the ethanol solution of sodium hydroxide to the asphalt fiber solution to the deionized water is 1:18: 15;
(2) adding etamsylate for grafting:
weighing etamsylate, adding the etamsylate into deionized water, and stirring in a dark condition until the etamsylate is completely dissolved to obtain an etamsylate solution; adding the hydroxylated asphalt fiber into the phenolsulfoethylamine solution, performing ultrasonic dispersion until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, heating to 120-150 ℃, performing sealed reaction for 10-15 hours, filtering to obtain a solid, washing the solid with purified water for three times, and drying in an oven at 80-100 ℃ to obtain the phenol sulfonated asphalt fiber;
wherein the mass ratio of the etamsylate to the deionized water is 1: 10; the mass ratio of the hydroxylated asphalt fibers to the etamsylate solution is 1: 15.
The preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.2; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 20;
s2, adding the phenol sulfonated asphalt fiber into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain a phenol sulfonated asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the phenol sulfonated asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and removing the solvent by rotary evaporation to obtain modified polyimide;
wherein the mass ratio of the phenol sulfonated asphalt fiber to the absolute ethyl alcohol is 1: 10; the mass ratio of the phenol sulfonated asphalt fiber mixed solution to the low-concentration polyamic acid solution is 1: 8.5.
The diamine monomer is amino silicone oil.
The dianhydride monomer is benzophenone tetracarboxylic dianhydride.
Comparative example 1
A connecting terminal consists of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide; the internal conductor is made of copper.
The modified polyimide is obtained by modifying polyimide with asphalt fibers.
The preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.15; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 17;
s2, adding the asphalt fibers into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain an asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and performing rotary evaporation to remove the solvent to obtain modified polyimide;
wherein the mass ratio of the asphalt fibers to the absolute ethyl alcohol is 1: 8; the mass ratio of the asphalt fiber mixed liquid to the low-concentration polyamic acid solution is 1: 6.2.
The diamine monomer is diaminodiphenyl ether.
The dianhydride monomer is pyromellitic dianhydride.
Comparative example 2
A connecting terminal consists of an insulating shell and an internal conductor; the insulating shell is made of polyimide; the internal conductor is made of copper.
In order to more clearly illustrate the invention, the performance test comparison of the materials of the insulating housing prepared in the embodiments 1-3 and the comparative examples 1-2 of the invention is carried out, and the test standards are as follows:
(1) tensile strength: the GB/T13022 standard measures the tensile strength of the material of the insulating housing.
(2) Dielectric loss tangent: the IPC-TM-650 standard measures the dielectric loss tangent of the material of the insulating housing.
(3) Glass transition temperature: the GB/T22567-2008 standard measures the glass transition temperature of the material of the insulating housing.
(4) Peel strength: the GB/T13557-2017 standard measures the peel strength of the material of the insulating housing.
(5) Thermal conductivity coefficient: the ASTM D5470 standard measures the thermal conductivity of the material of the insulating sheath.
The results are shown in Table 1.
TABLE 1 comparison of Material Properties of insulating housings
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The connecting terminal with strong traction force and easy heat dissipation is characterized by comprising a first connecting terminal and a second connecting terminal, wherein a convex block is arranged at one end of the first connecting terminal, a through hole is arranged at one end of the second connecting terminal, and the convex block extends into the through hole to form a detachable connecting structure; the other end of the first connecting terminal is connected with the other end of the second connecting terminal through a reinforcing rib, and the reinforcing rib, the first connecting terminal and the second connecting terminal form a triangular structure;
the first connecting terminal, the second connecting terminal and the reinforcing rib are made of the same material and are respectively composed of an insulating shell and an internal conductor; the insulating shell is made of modified polyimide;
the modified polyimide is obtained by modifying polyimide with phenol sulfonated asphalt fiber;
the preparation method of the phenol sulfoated asphalt fiber comprises the following steps:
(1) preparing hydroxylated asphalt fibers:
weighing asphalt fibers, placing the asphalt fibers at a temperature of between 40 ℃ below zero and 20 ℃ below zero, drying the asphalt fibers in vacuum for 24 to 48 hours, then adding the asphalt fibers into N, N-dimethylformamide, and stirring the mixture until the mixture is uniform to obtain an asphalt fiber mixed solution; dropwise adding an ethanol solution of sodium hydroxide with the mass concentration of 1mol/L into the asphalt fiber mixed solution, stirring while dropwise adding, after dropwise adding, heating to 70-80 ℃, carrying out reflux stirring reaction for 1-3 h, cooling to room temperature, adding deionized water, standing for 8-12 h at 0-4 ℃, filtering to obtain a solid, washing with purified water for three times, and drying under reduced pressure to obtain hydroxylated asphalt fibers;
wherein the mass ratio of the asphalt fibers to the N, N-dimethylformamide is 1: 5-15; the mass ratio of the ethanol solution of sodium hydroxide to the asphalt fiber mixed solution to the deionized water is 1: 12-18: 10-15;
(2) adding etamsylate for grafting:
weighing etamsylate, adding the etamsylate into deionized water, and stirring in a dark condition until the etamsylate is completely dissolved to obtain an etamsylate solution; adding the hydroxylated asphalt fiber into the phenolsulfoethylamine solution, performing ultrasonic dispersion until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, heating to 120-150 ℃, performing sealed reaction for 10-15 hours, filtering to obtain a solid, washing the solid with purified water for three times, and drying in an oven at 80-100 ℃ to obtain the phenol sulfonated asphalt fiber;
wherein the mass ratio of the etamsylate to the deionized water is 1: 5-10; the mass ratio of the hydroxylated asphalt fibers to the etamsylate solution is 1: 8-15.
2. The connecting terminal with strong traction and easy heat dissipation according to claim 1, wherein a plurality of heat dissipation holes are formed in each of the first connecting terminal and the second connecting terminal.
3. The connecting terminal with strong traction force and easy heat dissipation according to claim 1, wherein the reinforcing rib and the first connecting terminal and the reinforcing rib and the second connecting terminal are fixedly connected through bolts.
4. The connecting terminal with strong traction force and easy heat dissipation as recited in claim 1, wherein a plurality of strip-shaped grooves for injecting soldering tin and dissipating heat are formed on the surface of the reinforcing rib.
5. The terminal as claimed in claim 1, wherein the internal conductor is made of one or more of copper, aluminum and nickel.
6. The connecting terminal with strong traction force and easy heat dissipation as recited in claim 1, wherein the preparation method of the modified polyimide comprises the following steps:
s1, weighing a diamine monomer and a dianhydride monomer, and stirring and reacting for 5-10 hours at room temperature to obtain a high-concentration polyamic acid solution; adding trimethylchlorosilane into the high-concentration polyamic acid solution, and stirring for 1-3 hours to obtain a low-concentration polyamic acid solution;
wherein the molar ratio of the diamine monomer to the dianhydride monomer is 1: 1.1-1.2; the mass ratio of the trimethylchlorosilane to the high-concentration polyamic acid solution is 1: 14-20;
s2, adding the phenol sulfonated asphalt fiber into absolute ethyl alcohol, and performing ultrasonic dispersion until the mixture is uniform to obtain a phenol sulfonated asphalt fiber mixed solution; adding the low-concentration polyamic acid solution into the phenol sulfonated asphalt fiber mixed solution, stirring for 2-5 h at room temperature, and removing the solvent by rotary evaporation to obtain modified polyimide;
wherein the mass ratio of the phenol sulfonated asphalt fiber to the absolute ethyl alcohol is 1: 5-10; the mass ratio of the phenol sulfonated asphalt fiber mixed solution to the low-concentration polyamic acid solution is 1: 4.2-8.5.
7. The connecting terminal with strong traction force and easy heat dissipation according to claim 6, wherein the diamine monomer is one or more of diaminodiphenyl ether, amino-terminated siloxane and amino-silicone oil; the dianhydride monomer is one or more of pyromellitic dianhydride, diphenyl ether tetracarboxylic dianhydride and benzophenone tetracarboxylic dianhydride.
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| CN105552605A (en) * | 2014-10-22 | 2016-05-04 | 西蒙独资有限公司 | Quick-connection terminal device for electrical connection |
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| CN209232988U (en) * | 2018-12-27 | 2019-08-09 | 南京标尚电气有限公司 | A kind of connecting terminal of the strong easy heat radiation of tractive force |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107586048A (en) * | 2012-06-28 | 2018-01-16 | 康宁股份有限公司 | Delamination glass container with refractory coating |
| CN203826609U (en) * | 2014-03-24 | 2014-09-10 | 温州市力博电子有限公司 | Pluggable terminal for refrigerator |
| CN105552605A (en) * | 2014-10-22 | 2016-05-04 | 西蒙独资有限公司 | Quick-connection terminal device for electrical connection |
| CN104629365A (en) * | 2015-02-17 | 2015-05-20 | 哈尔滨工程大学 | Method for preparing carbon fiber-polyimide composite material |
| CN108025655A (en) * | 2015-08-06 | 2018-05-11 | 伊帕尔科公司 | System for establishing temporary electrical power connection automatically |
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