CN117238570A - High-temperature-resistant high-voltage cable for new energy automobile - Google Patents
High-temperature-resistant high-voltage cable for new energy automobile Download PDFInfo
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- CN117238570A CN117238570A CN202311201891.2A CN202311201891A CN117238570A CN 117238570 A CN117238570 A CN 117238570A CN 202311201891 A CN202311201891 A CN 202311201891A CN 117238570 A CN117238570 A CN 117238570A
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- temperature
- neck flask
- cable
- new energy
- polyvinyl chloride
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- 239000002131 composite material Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 34
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 51
- 238000006243 chemical reaction Methods 0.000 claims description 50
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 239000004801 Chlorinated PVC Substances 0.000 claims description 44
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 32
- 238000004321 preservation Methods 0.000 claims description 26
- -1 polysiloxane Polymers 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 23
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003607 modifier Substances 0.000 claims description 23
- 229920001296 polysiloxane Polymers 0.000 claims description 23
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 22
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 22
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 21
- DWSWCPPGLRSPIT-UHFFFAOYSA-N benzo[c][2,1]benzoxaphosphinin-6-ium 6-oxide Chemical class C1=CC=C2[P+](=O)OC3=CC=CC=C3C2=C1 DWSWCPPGLRSPIT-UHFFFAOYSA-N 0.000 claims description 21
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- QWXYZCJEXYQNEI-OSZHWHEXSA-N intermediate I Chemical compound COC(=O)[C@@]1(C=O)[C@H]2CC=[N+](C\C2=C\C)CCc2c1[nH]c1ccccc21 QWXYZCJEXYQNEI-OSZHWHEXSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
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- 239000003999 initiator Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
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- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims description 9
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- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 claims description 8
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical group N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
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- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical group C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 5
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- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 claims description 4
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- SPSPIUSUWPLVKD-UHFFFAOYSA-N 2,3-dibutyl-6-methylphenol Chemical compound CCCCC1=CC=C(C)C(O)=C1CCCC SPSPIUSUWPLVKD-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002216 antistatic agent Substances 0.000 claims description 3
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 3
- 239000004250 tert-Butylhydroquinone Substances 0.000 claims description 3
- 235000019281 tert-butylhydroquinone Nutrition 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- URRXFVLQMNVUNX-UHFFFAOYSA-N C(CC)S(=O)(=O)OOC1=C(C=CC=C1)CCCCCCCCC.[Na] Chemical compound C(CC)S(=O)(=O)OOC1=C(C=CC=C1)CCCCCCCCC.[Na] URRXFVLQMNVUNX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- GWOWVOYJLHSRJJ-UHFFFAOYSA-L cadmium stearate Chemical compound [Cd+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O GWOWVOYJLHSRJJ-UHFFFAOYSA-L 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
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- 238000007873 sieving Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
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- XYAREJVDHVCCCZ-UHFFFAOYSA-N C(CCCCCCCC)C(CC)OC1=CC=CC=C1.[Na] Chemical compound C(CCCCCCCC)C(CC)OC1=CC=CC=C1.[Na] XYAREJVDHVCCCZ-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 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 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
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- 238000007405 data analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-temperature-resistant high-voltage cable for a new energy automobile, and belongs to the technical field of cable processing. The invention is used for solving the technical problems that a new energy automobile charging cable in the prior art is easy to age and damage under a high-temperature and high-pressure charging environment, has poor stability in the charging process of the new energy automobile and limits the charging efficiency and safety. The composite cable material prepared by the invention has good high temperature resistance and insulating property, improves the mechanical property and thermal aging resistance of a cable sheath layer, improves the heat conductivity coefficient and flame retardance of the cable sheath layer, and shows good charging stability in the process of charging a vehicle.
Description
Technical Field
The invention relates to the technical field of cable processing, in particular to a high-temperature and high-pressure resistant cable for a new energy automobile.
Background
With the increasing concern of global environmental protection, new energy automobiles are rapidly developing. The new energy automobile uses electric energy as energy, and in the use process, the new energy automobile needs to be charged by using a cable, and direct current (DC charge) is directly transmitted from charging equipment to a battery of the electric automobile. Direct current charging is typically performed at a relatively high voltage (e.g., 200-800 volts) and a relatively high current (e.g., 200-500 amps). The direct current charging has the characteristic of quick charging, and can fully charge the battery of the electric vehicle in a short time. Therefore, direct current fast charging is widely used for electric vehicle charging stations, public charging piles, and high power charging devices.
In the prior art, a metal conductor such as copper and aluminum and a plastic material such as Polyethylene (PE) or polyvinyl chloride (PVC) are generally adopted as a sheath insulating layer for the new energy automobile charging cable, however, under a high-temperature and high-pressure charging environment, the materials are easily affected by thermal expansion, softening and aging, so that the new energy charging cable has the problems such as aging of the insulating layer, current leakage and the like under the high-temperature and high-pressure charging environment, the performance and the safety of the cable are seriously threatened, the stability of the new energy automobile in the charging process is poor, and the charging efficiency and the charging safety are limited.
In view of the technical drawbacks of this aspect, a solution is now proposed.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant high-voltage cable for a new energy automobile, which is used for solving the technical problems that in the prior art, the new energy automobile charging cable is easy to be heated and expanded, softened and aged under the high-temperature and high-voltage charging environment, so that the insulating layer of the new energy charging cable is aged, current leakage and the like, the performance and the safety of the cable are seriously threatened, the stability of the new energy automobile in the charging process is poor, and the charging efficiency and the safety are limited.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a high temperature and high voltage resistant cable for new energy automobile, includes a plurality of parallel arrangement's cable core, a plurality of the outside cladding of cable core has the restrictive coating, the restrictive coating is obtained by the cooling shaping after the compound cable material melts the extrusion of extruder, and wherein, the compound cable material is processed by following steps:
s1, adding chlorinated polyvinyl chloride powder and 40wt% sodium hydroxide solution into a trichloro flask, stirring, raising the temperature of the three-neck flask to 80-90 ℃, carrying out heat preservation reaction for 4-6h, and carrying out post treatment to obtain pretreated chlorinated polyvinyl chloride;
s2, adding the pretreated chlorinated polyvinyl chloride, the modifier and the cyclohexanone into a three-neck flask, stirring until the system is dissolved, adding an initiator into the three-neck flask, raising the temperature of the three-neck flask to 75-85 ℃, carrying out heat preservation reaction for 4-6h, and carrying out post treatment to obtain the modified chlorinated polyvinyl chloride;
and S3, adding the polyvinyl chloride and the modified chlorinated polyvinyl chloride into a double-roller open mill, melting and mixing uniformly, sequentially adding the modified polysiloxane, the filler, the composite cross-linking agent, the chloroplatinic acid and the additive into the open mill, and discharging to obtain the composite cable material.
Further, the sheath layer is provided with a liquid inlet channel and a plurality of liquid return channels which are arranged in parallel along the length direction of the cable core, wherein the liquid inlet channel is positioned at the center of the sheath layer, a plurality of cable cores are distributed outside the liquid inlet channel and are arranged in an annular array by taking the axis of the liquid inlet channel as the center of a circle, and the liquid return channels are of coil-shaped structures and enclose the cable cores.
Further, the chlorinated polyethylene powder, 40wt% sodium hydroxide solution in the amount ratio of 1g to 5ml in the step S1, the post-treatment operation comprises: after the reaction is finished, the temperature of the three-neck flask is reduced to room temperature, suction filtration is carried out, a filter cake is washed to be neutral by purified water, and then the filter cake is transferred into a drying oven with the temperature of 60-70 ℃ to be dried to constant weight, thus obtaining pretreated chlorinated polyvinyl chloride; in the step S2, the dosage ratio of the chlorinated polyvinyl chloride, the modifier, the cyclohexanone and the initiator is 5g to 1g to 20mL to 0.1g, the initiator is dibenzoyl peroxide, and the post-treatment operation comprises: after the reaction is finished, the temperature of the three-mouth flask is reduced to room temperature, absolute ethyl alcohol is added into the three-mouth flask, a large amount of solids are separated out, stirring is carried out for 15-20min, suction filtration is carried out, a filter cake is washed three times by the absolute ethyl alcohol and then is dried, and the filter cake is transferred into a drying oven with the temperature of 60-70 ℃ to be dried to constant weight, thus obtaining the modified chlorinated polyvinyl chloride.
Further, the modifier is processed by the following steps:
adding cyanuric chloride and acetonitrile into a three-neck flask, stirring, reducing the temperature of the three-neck flask to 5-8 ℃, slowly dropwise adding 1, 3-diamino-2-propanol into the three-neck flask, keeping the temperature, stirring for 30-50min, dropwise adding 30wt% of sodium hydroxide solution into the three-neck flask, keeping the temperature, reacting for 60-80min, heating the three-neck flask to 80-90 ℃ at the speed of 0.5 ℃/min, keeping the temperature, reacting for 1-2h, and performing post treatment to obtain an intermediate I;
the synthesis reaction principle of the intermediate I is as follows:
wherein:
a2, adding the intermediate I, acetone and concentrated hydrochloric acid into a three-neck flask, stirring, dropwise adding maleic anhydride into the three-neck flask after the system is dissolved, raising the temperature of the three-neck flask until the system flows back after the dropwise adding is finished, carrying out heat preservation reaction for 6-8h, and carrying out post treatment to obtain the modifier.
The synthetic reaction principle of the modifier is as follows:
further, in the step A1, the dosage ratio of cyanuric chloride, acetonitrile, 1, 3-diamino-2-propanol and 30wt% sodium hydroxide solution is 10g:50mL:7g:200g, and the post-treatment operation comprises: after the reaction is finished, the temperature of the three-neck flask is reduced to room temperature, suction filtration is carried out, a filter cake is washed to be neutral by purified water and then is dried, and the filter cake is transferred into a drying oven with the temperature of 70-80 ℃ to be dried to constant weight, thus obtaining an intermediate I; in the step A2, the dosage ratio of the intermediate I, acetone, concentrated hydrochloric acid and maleic anhydride is 3g:10mL:1mL:2g, the concentration of the concentrated hydrochloric acid is 8-10mol/L, and the post-treatment operation comprises: after the reaction is finished, acetone in the three-neck flask is distilled off, absolute ethyl alcohol is added into the three-neck flask, ultrasonic dispersion is carried out for 30-50min at room temperature, suction filtration is carried out, filter cakes are washed three times by the absolute ethyl alcohol and then are dried, and the filter cakes are transferred into a drying oven with the temperature of 65-75 ℃ to be dried to constant weight, thus obtaining the modifier.
Further, the preparation method of the modified polysiloxane comprises the following steps: adding hydrogen-containing silicone oil, isopropanol and a catalyst into a three-neck flask, stirring, raising the temperature of the three-neck flask to slightly reflux the system, dropwise adding a mixed solution into the three-neck flask, carrying out heat preservation reaction for 4-6h after the dropwise adding is finished, and carrying out post-treatment to obtain the modified polysiloxane.
The synthetic reaction principle of the modified polysiloxane is as follows:
further, the mixed solution consists of perfluorohexyl ethylene and polyether F6 according to the dosage ratio of 1g to 3g, the dosage ratio of hydrogen-containing silicone oil, isopropanol, a catalyst and the mixed solution is 4g to 14mL to 0.5g to 2g, the catalyst is chloroplatinic acid, and the post-treatment operation comprises: after the reaction is completed, isopropanol is distilled off to obtain a modified polysiloxane.
Further, the composite cross-linking agent is prepared by the following steps:
b1, adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, vinyl trimethoxy silane and an initiator into a three-neck flask protected by nitrogen, stirring, heating the three-neck flask to 75-85 ℃, carrying out heat preservation reaction for 6-8h, adding 3mol/L hydrochloric acid solution and N, N-dimethylformamide into the three-neck flask, carrying out heat preservation reaction for 22-26h, and carrying out aftertreatment to obtain modified DOPO;
the synthesis reaction principle of the modified DOPO is as follows:
wherein:
and B2, adding the modified DOPO and 0.1mol/L hydrochloric acid into a three-neck flask, performing ultrasonic dispersion for 30-50min, fixing the three-neck flask on an iron stand with mechanical stirring, slowly dropwise adding 30wt% trimethoxysilane/absolute ethyl alcohol solution into the three-neck flask at room temperature, performing heat preservation reaction for 60-80min after dropwise adding, and performing post-treatment to obtain the composite cross-linking agent.
Further, in the step B1, the dosage ratio of the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, the vinyl trimethoxysilane, the initiator, the 3mol/L hydrochloric acid solution and the N, N-dimethylformamide is 21.6g:19g:1g:28mL:100mL, the initiator is azodiisobutyronitrile, and the post-treatment operation comprises: taking another three-neck flask, adding a large amount of deionized water into the three-neck flask, stirring, slowly adding the reaction system into the three-neck flask filled with deionized water after the reaction is completed, separating out solids, reducing the temperature of the three-neck flask to 15-20 ℃, preserving heat, crystallizing for 20-30min, carrying out suction filtration, washing a filter cake with deionized water for three times, transferring the filter cake into a drying box with the temperature of 80-85 ℃, drying to constant weight, crushing, and sieving with a 100-mesh screen to obtain modified DOPO; in the step B2, the dosage ratio of the modified DOPO, the 0.1mol/L hydrochloric acid and the 30wt% trimethoxysilane/absolute ethyl alcohol solution is 1g to 5mL to 5g, and the post-treatment operation comprises: after the reaction is finished, carrying out suction filtration, washing a filter cake with purified water to be neutral, transferring the filter cake into a drying box with the temperature of 80-85 ℃, and drying the filter cake to constant weight to obtain the composite cross-linking agent.
Further, in the step S3, the dosage ratio of polyvinyl chloride, modified chlorinated polyvinyl chloride, modified polysiloxane, filler, composite cross-linking agent, chloroplatinic acid and additive is 100g:25g:15g:20g:10g:3g:5g, the rotating speed of the two-roll mill is 30-40r/min, the mixing temperature is 140-150 ℃, the mixing time is 60-80min, the filler is gypsum powder, the additive consists of dispersing agent, antioxidant, antistatic agent and lubricant according to the dosage ratio of 1g:1g:2g, wherein the dispersing agent is one or more of sodium stearate, calcium stearate, zinc stearate and cadmium stearate, the antioxidant is one or more of butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone, the antistatic agent is one of sodium nonylphenoxy propane sulfonate and potassium p-nonyl diphenyl ether sulfonate, and the lubricant is one of butyl stearate and microcrystalline paraffin.
The invention has the following beneficial effects:
1. according to the high-temperature-resistant high-pressure cable for the new energy automobile, the liquid inlet channel and the liquid return channels are arranged on the sheath layer, when the new energy automobile charging pile charges the automobile through the cable, the heat exchange medium is conveyed to the charging gun head close to the automobile from the liquid inlet channel, is dispersed into the liquid return channels through the end cover of the arranged cable, is returned to the heat exchanger of the charging pile through the liquid return, so that the heat exchange medium is circulated, heat generated by the high-pressure cable when the new energy automobile is charged is taken away, a plurality of cables are positioned between the liquid inlet channel and the liquid return channels, the heat exchange effect of the cable is effectively improved, the length of the liquid return channels is effectively increased through the annular liquid return channels, and therefore the heat exchange area of the liquid return channels is increased, and the stability of the charging state of the new energy automobile is further improved.
2. The invention relates to a composite cable material for a high-temperature-resistant high-voltage cable for a new energy automobile, which is prepared by carrying out substitution addition reaction on cyanuric chloride and 1, 3-diamino-2-propanol in an alkaline environment to prepare an intermediate I with a reticular cross-linking structure, wherein active functional group hydroxyl on the intermediate I and maleic anhydride are added in a hydrochloric acid environment after hydrolysis to prepare a modifier with maleic acid modification; the chlorinated polyvinyl chloride is subjected to high-temperature treatment in a sodium hydroxide solution, H-Cl is removed from chlorinated polyvinyl chloride molecules to form olefin double bonds, and then the olefin double bonds and the olefin on the modifier undergo free radical addition reaction under the action of an initiator to prepare the modified chlorinated polyvinyl chloride; after the modifier containing the triazinide is grafted and modified on the chlorinated polyvinyl chloride, the chlorine content of the chlorinated polyvinyl chloride is effectively reduced, so that the chlorine content of the modified chlorinated polyvinyl chloride is equivalent to that of the polyvinyl chloride, the compatibility between the modified chlorinated polyvinyl chloride and the polyvinyl chloride is improved, the modified chlorinated polyvinyl chloride and the polyvinyl chloride are more easily and uniformly mixed, and the triazinide has higher heat resistance and chemical stability, thereby improving the heat resistance and the insulation performance of the composite cable material.
3. The invention relates to a composite cable material for a high-temperature-resistant high-voltage cable for a new energy automobile, which is prepared by carrying out addition reaction on hydrogen-containing silicone oil, perfluorohexyl ethylene and polyether F6 in a catalyst environment, and grafting and modifying the perfluorohexyl ethylene and the polyether F6 on the hydrogen-containing silicone oil; the polyether F6 and the perfluorohexyl ethylene are used for grafting modification on the hydrogen-containing silicone oil, so that the lubricating property and the oil resistance of the hydrogen-containing silicone oil can be improved, the modified polysiloxane can be uniformly dispersed in the composite cable material, the dispersibility of each component of the composite cable material and the oil resistance of the composite cable are improved, and the ageing resistance of the cable sheath layer is improved; the preparation method comprises the steps of performing substitution addition reaction on 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and vinyl trimethoxy silane under the action of an initiator to generate DOPO modified by trimethoxy silane, opening siloxane in a hydrochloric acid and DMF system to form silicon hydroxyl, and performing condensation reaction to generate modified DOPO with a spherical structure and space three-dimensional cross-linking; a large amount of nitrogen elements contained in the modifier and DOPO can form an interaction, nitrogen is released in the combustion process, salt mist is reduced, the carbon forming property of the cable sheath layer is improved, and the flame retardant property of the cable sheath layer is further improved; the modified DOPO reacts with trimethoxy silane in an acidic environment to form a polysiloxane crosslinked coating layer on the surface of the modified DOPO, so as to obtain a composite crosslinking agent; the surface of the composite cross-linking agent contains a large amount of Si-H, hydrogen on the Si-H acts on active reaction sites under the action of chloroplatinic acid and high temperature, and the active reaction sites can react with olefin double bonds or other active functional groups to form a composite cable material with net-shaped cross-linking, so that the mechanical property of the composite cable material is improved; the polysiloxane generally has higher heat conductivity, and forms a heat conduction channel in the composite cable material, so that the heat conduction performance of the cable sheath layer is improved, heat generated by the cable can be taken away more easily by heat exchange medium flowing in the cable, and the stability of the cable to the charging state in the automobile charging process is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a partial perspective structure of a high-temperature and high-voltage resistant cable for a new energy automobile according to the present invention;
FIG. 2 is a schematic diagram of an end-sectional structure of a high-temperature and high-voltage resistant cable for a new energy automobile;
fig. 3 is a schematic diagram of a partial front cross-sectional structure of the high-temperature and high-voltage resistant cable for the new energy automobile of the present invention.
In the figure: 100. a cable core; 200. a sheath layer; 300. a liquid inlet channel; 400. and a liquid return channel.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-3, the present embodiment provides a high temperature and high voltage cable for a new energy automobile, including a plurality of cable cores 100 arranged in parallel, a sheath layer 200 is wrapped on the outer portion of the plurality of cable cores 100, a liquid inlet channel 300 and a plurality of liquid return channels 400 are arranged on the sheath layer 200 in parallel along the length direction of the cable cores 100, wherein the liquid inlet channel 300 is located at the center of the sheath layer 200, the plurality of cable cores 100 are distributed on the outer portion of the liquid inlet channel 300 and are arranged in an annular array with the axis center of the liquid inlet channel 300 as the center, the plurality of liquid return channels 400 are all in a coil-shaped structure, and the plurality of cable cores 100 are enclosed, wherein the sheath layer 200 is obtained by cooling and molding after the composite cable material is melted and extruded by an extruder.
The plurality of cable cores 100 are composed of a plurality of conductive copper wires and an insulating rubber layer coated outside the plurality of conductive copper wires, an end cover (not shown) is arranged at one end of the high-voltage cable, which is far away from the charging pile, the plurality of cable cores 100 are all extended to the outside of the end cover, the end cover is arranged at one end of the cable, so that a heat exchange medium output from the liquid inlet channel 300 is conveyed to the plurality of liquid return channels 400, and returns to a heat exchanger inside the charging pile through the liquid return channels 400, and heat generated by the high-voltage cable when the new energy automobile is charged can be taken away as much as possible through the circulation of the heat exchange medium in the liquid inlet channel 300 and the liquid return channels, and the stability of the charging state of the new energy automobile is improved.
Example 3
The embodiment provides a preparation method of a composite cable material for a high-temperature-resistant high-voltage cable for a new energy automobile, which comprises the following steps of:
s1, preparing modifier
Weighing: adding 50g of cyanuric chloride and 250mL of acetonitrile into a three-neck flask, stirring, reducing the temperature of the three-neck flask to 5 ℃, slowly dripping 35g of 1, 3-diamino-2-propanol into the three-neck flask, keeping the temperature and stirring for 30min after dripping is finished, dripping 1000mL of 30wt% sodium hydroxide solution into the three-neck flask, keeping the temperature and reacting for 60min after dripping is finished, heating the three-neck flask to 80 ℃ at the speed of 0.5 ℃/min, keeping the temperature and reacting for 1h, reducing the temperature of the three-neck flask to room temperature, carrying out suction filtration, washing a filter cake with purified water to neutrality, and then drying the filter cake in a drying box with the temperature of 70 ℃ to constant weight to obtain an intermediate I;
weighing: 90g of intermediate I, 300mL of acetone and 30mL of 8mol/L hydrochloric acid are added into a three-neck flask to be stirred, 60g of maleic anhydride is dripped into the three-neck flask after the system is dissolved, the temperature of the three-neck flask is increased to reflux of the system after the dripping is finished, the reaction is carried out for 6 hours under heat preservation, the acetone in the three-neck flask is distilled off, 450mL of absolute ethyl alcohol is added into the three-neck flask, ultrasonic dispersion is carried out for 30min at room temperature, suction filtration is carried out, a filter cake is dried after being washed three times by the absolute ethyl alcohol, and the filter cake is transferred into a drying box with the temperature of 65 ℃ to be dried to constant weight, thus obtaining the modifier.
S2, preparing modified chlorinated polyvinyl chloride
Weighing: 100g of chlorinated polyvinyl chloride powder and 500mL of 40wt% sodium hydroxide solution are added into a trichloro flask for stirring, the temperature of the three-mouth flask is increased to 80 ℃, the temperature is kept for 4 hours for reaction, the temperature of the three-mouth flask is reduced to room temperature, suction filtration is carried out, a filter cake is washed to be neutral by purified water, and then the filter cake is transferred into a drying oven with the temperature of 60 ℃ for drying to constant weight, thus obtaining pretreated chlorinated polyvinyl chloride;
weighing: 100g of pretreated chlorinated polyvinyl chloride, 20g of modifier and 400mL of cyclohexanone are added into a three-neck flask, stirred until the system is dissolved, 2g of dibenzoyl peroxide is added into the three-neck flask, the temperature of the three-neck flask is increased to 75 ℃, the temperature of the three-neck flask is kept for 4h, the temperature of the three-neck flask is reduced to room temperature, 800mL of absolute ethyl alcohol is added into the three-neck flask, a large amount of solids are separated out, stirred for 15min, suction filtered, a filter cake is washed three times by the absolute ethyl alcohol and then is dried, and the filter cake is transferred into a drying box with the temperature of 60 ℃ and is dried to constant weight, so that the modified chlorinated polyvinyl chloride is obtained.
S3, preparing modified polysiloxane
Adding perfluorohexyl ethylene and polyether F6 into a beaker according to the dosage ratio of 1g to 3g, and uniformly mixing to obtain a mixed solution;
weighing: adding 20g of hydrogen-containing silicone oil, 70mL of isopropanol and 2.5g of chloroplatinic acid into a three-neck flask, stirring, raising the temperature of the three-neck flask to slightly reflux the system, dropwise adding 10g of mixed solution into the three-neck flask, keeping the temperature for reaction for 4 hours after the dropwise adding is finished, and evaporating the isopropanol to obtain the modified polysiloxane.
S4, preparing a composite cross-linking agent
Weighing: adding 43.2g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 38g of vinyl trimethoxy silane and 2g of azodiisobutyronitrile into a three-neck flask protected by nitrogen, stirring, raising the temperature of the three-neck flask to 75 ℃, carrying out heat preservation reaction for 6h, adding 56mL of 3mol/L hydrochloric acid solution and 200mL of N, N-dimethylformamide into the three-neck flask, and carrying out heat preservation reaction for 22h;
adding 600mL of deionized water into the three-necked flask, stirring, slowly adding the reaction system into the three-necked flask filled with deionized water after the reaction is completed, separating out solids, reducing the temperature of the three-necked flask to 15 ℃, preserving heat, crystallizing for 20min, carrying out suction filtration, washing a filter cake with deionized water for three times, transferring into a drying box with the temperature of 80 ℃, drying to constant weight, crushing, sieving with a 100-mesh screen, and obtaining modified DOPO after treatment;
weighing: adding 100mL of modified DOPO 20g and 0.1mol/L hydrochloric acid into a three-neck flask, performing ultrasonic dispersion for 30min, fixing the three-neck flask on an iron stand with mechanical stirring, slowly dropwise adding 100mL of 30wt% trimethoxysilane/absolute ethyl alcohol solution into the three-neck flask at room temperature, performing heat preservation reaction for 60min after dropwise adding, performing suction filtration, washing a filter cake with purified water to be neutral, transferring to a drying box with the temperature of 80 ℃, and drying to constant weight to obtain the composite cross-linking agent.
S5, preparing composite cable material
Weighing: adding 500g of polyvinyl chloride and 125g of modified chlorinated polyvinyl chloride into a double-roller open mill, melting and mixing uniformly, sequentially adding 75g of modified polysiloxane, 100g of gypsum powder, 50g of composite cross-linking agent, 15g of chloroplatinic acid, 5g of sodium stearate, 5g of butyl hydroxy anisole, 5g of nonylphenoxy propane sodium sulfonate and 10g of butyl stearate into the open mill, setting the rotating speed of the double-roller open mill to be 30r/min, mixing at 140 ℃ for 60min, and discharging to obtain the composite cable material.
Example 3
The embodiment provides a preparation method of a composite cable material for a high-temperature-resistant high-voltage cable for a new energy automobile, which comprises the following steps of:
s1, preparing modifier
Weighing: adding 50g of cyanuric chloride and 250mL of acetonitrile into a three-neck flask, stirring, reducing the temperature of the three-neck flask to 7 ℃, slowly dripping 35g of 1, 3-diamino-2-propanol into the three-neck flask, keeping the temperature and stirring for 40min after dripping is finished, dripping 1000mL of 30wt% sodium hydroxide solution into the three-neck flask, keeping the temperature and reacting for 70min after dripping is finished, heating the three-neck flask to 85 ℃ at the speed of 0.5 ℃/min, keeping the temperature and reacting for 1.5h, reducing the temperature of the three-neck flask to room temperature, carrying out suction filtration, washing a filter cake with purified water to neutrality, and then drying the filter cake in a drying box with the temperature of 75 ℃ to constant weight to obtain an intermediate I;
weighing: 90g of intermediate I, 300mL of acetone and 30mL of 9mol/L hydrochloric acid are added into a three-neck flask to be stirred, 60g of maleic anhydride is dripped into the three-neck flask after the system is dissolved, the temperature of the three-neck flask is increased to reflux of the system after the dripping is finished, the reaction is carried out for 7h under heat preservation, the acetone in the three-neck flask is distilled off, 450mL of absolute ethyl alcohol is added into the three-neck flask, ultrasonic dispersion is carried out for 40min at room temperature, suction filtration is carried out, a filter cake is dried after being washed three times by the absolute ethyl alcohol, and the filter cake is transferred into a drying box with the temperature of 70 ℃ to be dried to constant weight, thus obtaining the modifier.
S2, preparing modified chlorinated polyvinyl chloride
Weighing: 100g of chlorinated polyvinyl chloride powder and 500mL of 40wt% sodium hydroxide solution are added into a trichloro flask for stirring, the temperature of the three-mouth flask is increased to 85 ℃, the temperature of the three-mouth flask is kept for 5 hours for reaction, the temperature of the three-mouth flask is reduced to room temperature, the three-mouth flask is subjected to suction filtration, a filter cake is washed to be neutral by purified water, and the filter cake is transferred into a drying oven with the temperature of 65 ℃ for drying to constant weight, so that pretreated chlorinated polyvinyl chloride is obtained;
weighing: 100g of pretreated chlorinated polyvinyl chloride, 20g of modifier and 400mL of cyclohexanone are added into a three-neck flask, stirred until the system is dissolved, 2g of dibenzoyl peroxide is added into the three-neck flask, the temperature of the three-neck flask is increased to 80 ℃, the temperature of the three-neck flask is kept for 5h, the temperature of the three-neck flask is reduced to room temperature, 800mL of absolute ethyl alcohol is added into the three-neck flask, a large amount of solids are separated out, stirred for 18min, pumped and filtered, the filter cake is washed three times by the absolute ethyl alcohol and then pumped and dried, and the filter cake is transferred into a drying box with the temperature of 65 ℃ and dried to constant weight, so that the modified chlorinated polyvinyl chloride is obtained.
S3, preparing modified polysiloxane
Adding perfluorohexyl ethylene and polyether F6 into a beaker according to the dosage ratio of 1g to 3g, and uniformly mixing to obtain a mixed solution;
weighing: adding 20g of hydrogen-containing silicone oil, 70mL of isopropanol and 2.5g of chloroplatinic acid into a three-neck flask, stirring, raising the temperature of the three-neck flask to slightly reflux the system, dropwise adding 10g of mixed solution into the three-neck flask, keeping the temperature for reaction for 5h after the dropwise adding is finished, and evaporating the isopropanol to obtain the modified polysiloxane.
S4, preparing a composite cross-linking agent
Weighing: adding 43.2g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 38g of vinyl trimethoxy silane and 2g of azodiisobutyronitrile into a three-neck flask protected by nitrogen, stirring, raising the temperature of the three-neck flask to 80 ℃, carrying out heat preservation reaction for 7h, adding 56mL of 3mol/L hydrochloric acid solution and 200mL of N, N-dimethylformamide into the three-neck flask, and carrying out heat preservation reaction for 24h;
adding 600mL of deionized water into the three-necked flask, stirring, slowly adding the reaction system into the three-necked flask filled with deionized water after the reaction is completed, separating out solids, reducing the temperature of the three-necked flask to 18 ℃, preserving heat, crystallizing for 25min, carrying out suction filtration, washing a filter cake with deionized water for three times, transferring into a drying box with the temperature of 83 ℃, drying to constant weight, crushing, sieving with a 100-mesh screen, and obtaining modified DOPO after treatment;
weighing: adding 100mL of modified DOPO 20g and 0.1mol/L hydrochloric acid into a three-neck flask, performing ultrasonic dispersion for 40min, fixing the three-neck flask on an iron stand with mechanical stirring, slowly dropwise adding 100mL of 30wt% trimethoxysilane/absolute ethyl alcohol solution into the three-neck flask at room temperature, performing heat preservation reaction for 70min after dropwise adding, performing suction filtration, washing a filter cake with purified water to be neutral, transferring to a drying box with the temperature of 83 ℃, and drying to constant weight to obtain the composite cross-linking agent.
S5, preparing composite cable material
Weighing: adding 500g of polyvinyl chloride and 125g of modified chlorinated polyvinyl chloride into a double-roller open mill for melting and mixing uniformly, sequentially adding 75g of modified polysiloxane, 100g of gypsum powder, 50g of composite cross-linking agent, 15g of chloroplatinic acid, 5g of calcium stearate, 5g of dibutyl hydroxy toluene, 5g of potassium p-nonyldiphenyl ether sulfonate and 10g of microcrystalline paraffin into the open mill, setting the rotating speed of the double-roller open mill to be 35r/min, mixing at 145 ℃ for 70min, and discharging to obtain the composite cable material.
Example 4
The embodiment provides a preparation method of a composite cable material for a high-temperature-resistant high-voltage cable for a new energy automobile, which comprises the following steps of:
s1, preparing modifier
Weighing: adding 50g of cyanuric chloride and 250mL of acetonitrile into a three-neck flask, stirring, reducing the temperature of the three-neck flask to 8 ℃, slowly dripping 35g of 1, 3-diamino-2-propanol into the three-neck flask, keeping the temperature and stirring for 50min after dripping is finished, dripping 1000mL of 30wt% sodium hydroxide solution into the three-neck flask, keeping the temperature and reacting for 80min after dripping is finished, heating the three-neck flask to-90 ℃ at the speed of 0.5 ℃/min, keeping the temperature and reacting for 2h, reducing the temperature of the three-neck flask to room temperature, carrying out suction filtration, washing a filter cake with purified water to neutrality, and then drying the filter cake in a drying box with the temperature of 80 ℃ to constant weight to obtain an intermediate I;
weighing: 90g of intermediate I, 300mL of acetone and 30mL of 10mol/L hydrochloric acid are added into a three-neck flask to be stirred, 60g of maleic anhydride is dripped into the three-neck flask after the system is dissolved, the temperature of the three-neck flask is increased to reflux of the system after the dripping is finished, the reaction is carried out for 8 hours under heat preservation, the acetone in the three-neck flask is distilled off, 450mL of absolute ethyl alcohol is added into the three-neck flask, the three-neck flask is ultrasonically dispersed for 50min at room temperature, the three-neck flask is subjected to suction filtration, a filter cake is washed by the absolute ethyl alcohol for three times and then is dried, and the filter cake is transferred into a drying box with the temperature of 75 ℃ to be dried to constant weight, so that the modifier is obtained.
S2, preparing modified chlorinated polyvinyl chloride
Weighing: 100g of chlorinated polyvinyl chloride powder and 500mL of 40wt% sodium hydroxide solution are added into a trichloro flask for stirring, the temperature of the three-mouth flask is increased to 90 ℃, the temperature is kept for 6 hours for reaction, the temperature of the three-mouth flask is reduced to room temperature, suction filtration is carried out, a filter cake is washed to be neutral by purified water, and then the filter cake is transferred into a drying oven with the temperature of 70 ℃ for drying to constant weight, thus obtaining pretreated chlorinated polyvinyl chloride;
weighing: 100g of pretreated chlorinated polyvinyl chloride, 20g of modifier and 400mL of cyclohexanone are added into a three-neck flask, stirred until the system is dissolved, 2g of dibenzoyl peroxide is added into the three-neck flask, the temperature of the three-neck flask is increased to 85 ℃, the temperature of the three-neck flask is kept for 6h, the temperature of the three-neck flask is reduced to room temperature, 800mL of absolute ethyl alcohol is added into the three-neck flask, a large amount of solids are separated out, stirred for 20min, pumped and filtered, the filter cake is washed three times by the absolute ethyl alcohol and then pumped and dried, and the filter cake is transferred into a drying box with the temperature of 70 ℃ and dried to constant weight, so that the modified chlorinated polyvinyl chloride is obtained.
S3, preparing modified polysiloxane
Adding perfluorohexyl ethylene and polyether F6 into a beaker according to the dosage ratio of 1g to 3g, and uniformly mixing to obtain a mixed solution;
weighing: adding 20g of hydrogen-containing silicone oil, 70mL of isopropanol and 2.5g of chloroplatinic acid into a three-neck flask, stirring, raising the temperature of the three-neck flask to slightly reflux the system, dropwise adding 10g of mixed solution into the three-neck flask, keeping the temperature for reaction for 6h after the dropwise adding is finished, and evaporating the isopropanol to obtain the modified polysiloxane.
S4, preparing a composite cross-linking agent
Weighing: adding 43.2g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 38g of vinyl trimethoxy silane and 2g of azodiisobutyronitrile into a three-neck flask protected by nitrogen, stirring, raising the temperature of the three-neck flask to 85 ℃, carrying out heat preservation reaction for 8h, adding 56mL of 3mol/L hydrochloric acid solution and 200mL of N, N-dimethylformamide into the three-neck flask, and carrying out heat preservation reaction for 26h;
adding 600mL of deionized water into the three-necked flask, stirring, slowly adding the reaction system into the three-necked flask filled with deionized water after the reaction is completed, separating out solids, reducing the temperature of the three-necked flask to 20 ℃, preserving heat, crystallizing for 30min, carrying out suction filtration, washing a filter cake with deionized water for three times, transferring into a drying box with the temperature of 85 ℃, drying to constant weight, crushing, sieving with a 100-mesh screen, and obtaining modified DOPO after treatment;
weighing: adding 100mL of modified DOPO 20g and 0.1mol/L hydrochloric acid into a three-neck flask, performing ultrasonic dispersion for 50min, fixing the three-neck flask on an iron stand with mechanical stirring, slowly dropwise adding 100mL of 30wt% trimethoxysilane/absolute ethyl alcohol solution into the three-neck flask at room temperature, performing heat preservation reaction for 80min after dropwise adding, performing suction filtration, washing a filter cake with purified water to be neutral, transferring to a drying box with the temperature of 85 ℃, and drying to constant weight to obtain the composite cross-linking agent.
S5, preparing composite cable material
Weighing: adding 500g of polyvinyl chloride and 125g of modified chlorinated polyvinyl chloride into a double-roller open mill, melting and mixing uniformly, sequentially adding 75g of modified polysiloxane, 100g of gypsum powder, 50g of composite cross-linking agent, 15g of chloroplatinic acid, 5g of zinc stearate, 5g of tertiary butyl hydroquinone, 5g of nonylphenoxy propane sodium sulfonate and 10g of butyl stearate into the open mill, setting the rotating speed of the double-roller open mill to be 40r/min, mixing at 150 ℃ for 80min, discharging, and obtaining the composite cable material.
Comparative example 1
This comparative example differs from example 4 in that step S1 and step S2 are omitted and the modified chlorinated polyvinyl chloride in step S5 is replaced with an equal amount of chlorinated polyvinyl chloride.
Comparative example 2
The present comparative example differs from example 4 in that step S3 was omitted and no modified polysiloxane was added in step S5.
Comparative example 3
This comparative example differs from example 4 in that the further treatment of the modified DOPO in step S4 was omitted and the composite crosslinker in step S5 was replaced by an equivalent amount of modified DOPO.
Performance test:
the composite cable materials prepared in examples 2-4 and examples 1-3 were prepared into cables as described in example 1, and insulation performance, heat conduction performance, mechanical performance, high temperature resistance and aging resistance of the cable sheath were tested, wherein the insulation performance was measured with reference to standard GB/T1692-2008 "measurement of volume resistivity of vulcanized rubber", the heat conduction performance was measured with reference to standard GB 3399-1982 "thermal plate method for Plastic Heat conduction coefficient test", and the mechanical performance was measured with reference to standard GB/T2951.11-2008 "general test method for insulation and sheath Material of Cable 11 th section: general test method thickness and external dimension measurement mechanical properties test "test for determining tensile strength and elongation at break of test specimens, anti-aging performance reference standard GB/T2951.12-2008" general test method for insulation and sheathing materials for Cable and optical cable section 12: general test method Heat ageing test method "test sample tensile Strength and elongation at break after Heat ageing test in 100 ℃ environment, high temperature resistance test sample Vicat softening temperature is measured with reference to Standard GB/T1633-2000" determination of thermoplastic Vicat Softening Temperature (VST) ", and specific test results are shown in the following Table:
data analysis:
as can be seen from comparative analysis of the data in the above tables, the volume resistivity of the composite cable materials prepared in examples 2 to 4 of the present invention reached 7.5X10 14 Omega-m, thermal conductivity up to 1.35W (m-K) -1 The tensile strength reaches 28.8MPa, the elongation at break reaches 375%, the retention rate of the tensile strength reaches 92.7% after heat aging treatment, the retention rate of the elongation at break reaches 94.9%, the Vicat softening temperature reaches 185 ℃, and all detection data of the invention examples 2-4 are superior to those of the comparative examples, so that the composite electricity prepared by the invention examples 2-4 is illustratedThe cable material has good high temperature resistance and insulating property, improves the mechanical property and thermal ageing resistance of the cable sheath layer, and improves the heat conductivity coefficient of the cable, and in the experimental process, the combustion performance of the cable prepared by the embodiment of the invention reaches the A level, and the temperature of the cable is raised to be lower than 10 ℃ before and after charging the new energy automobile, which is far superior to the heat dissipation performance of the existing new energy automobile charging cable.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The utility model provides a high temperature and high voltage resistant cable for new energy automobile, includes a plurality of parallel arrangement's cable core (100), its characterized in that, a plurality of the outside cladding of cable core (100) has restrictive coating (200), restrictive coating (200) are by the compound cable material after the extruder melt extrusion, and the cooling shaping obtains, and wherein, the compound cable material is processed by following step:
s1, adding chlorinated polyvinyl chloride powder and 40wt% sodium hydroxide solution into a trichloro flask, stirring, raising the temperature of the three-neck flask to 80-90 ℃, carrying out heat preservation reaction for 4-6h, and carrying out post treatment to obtain pretreated chlorinated polyvinyl chloride;
s2, adding the pretreated chlorinated polyvinyl chloride, the modifier and the cyclohexanone into a three-neck flask, stirring until the system is dissolved, adding an initiator into the three-neck flask, raising the temperature of the three-neck flask to 75-85 ℃, carrying out heat preservation reaction for 4-6h, and carrying out post treatment to obtain the modified chlorinated polyvinyl chloride;
and S3, adding the polyvinyl chloride and the modified chlorinated polyvinyl chloride into a double-roller open mill, melting and mixing uniformly, sequentially adding the modified polysiloxane, the filler, the composite cross-linking agent, the chloroplatinic acid and the additive into the open mill, and discharging to obtain the composite cable material.
2. The high-temperature-resistant high-voltage cable for new energy automobile according to claim 1, wherein the sheath layer (200) is provided with a liquid inlet channel (300) and a plurality of liquid return channels (400) which are arranged in parallel along the length direction of the cable core (100), wherein the liquid inlet channel (300) is positioned at the center of the sheath layer (200), a plurality of cable cores (100) are distributed outside the liquid inlet channel (300) and are arranged in an annular array by taking the axle center of the liquid inlet channel (300) as the center of a circle, and the plurality of liquid return channels (400) are of coil-shaped structures and enclose the plurality of cable cores (100).
3. The high-temperature and high-pressure resistant cable for new energy automobiles according to claim 1, wherein the amount ratio of chlorinated polyethylene powder to 40wt% sodium hydroxide solution in the step S1 is 1g to 5ml; in the step S2, the dosage ratio of the chlorinated polyvinyl chloride, the modifier, the cyclohexanone and the initiator is 5g to 1g to 20mL to 0.1g, and the initiator is dibenzoyl peroxide.
4. The high-temperature and high-pressure resistant cable for new energy automobiles according to claim 1, wherein the modifier is processed by the following steps:
adding cyanuric chloride and acetonitrile into a three-neck flask, stirring, reducing the temperature of the three-neck flask to 5-8 ℃, slowly dropwise adding 1, 3-diamino-2-propanol into the three-neck flask, keeping the temperature, stirring for 30-50min, dropwise adding 30wt% of sodium hydroxide solution into the three-neck flask, keeping the temperature, reacting for 60-80min, heating the three-neck flask to 80-90 ℃ at the speed of 0.5 ℃/min, keeping the temperature, reacting for 1-2h, and performing post treatment to obtain an intermediate I;
a2, adding the intermediate I, acetone and concentrated hydrochloric acid into a three-neck flask, stirring, dropwise adding maleic anhydride into the three-neck flask after the system is dissolved, raising the temperature of the three-neck flask until the system flows back after the dropwise adding is finished, carrying out heat preservation reaction for 6-8h, and carrying out post treatment to obtain the modifier.
5. The high-temperature and high-pressure resistant cable for new energy automobiles according to claim 1, wherein the dosage ratio of cyanuric chloride, acetonitrile, 1, 3-diamino-2-propanol and 30wt% sodium hydroxide solution in the step A1 is 10g:50mL:7g:200g; in the step A2, the dosage ratio of the intermediate I, acetone, concentrated hydrochloric acid and maleic anhydride is 3g to 10mL to 1mL to 2g, and the concentration of the concentrated hydrochloric acid is 8-10mol/L.
6. The high-temperature and high-pressure resistant cable for new energy automobiles according to claim 1, wherein the preparation method of the modified polysiloxane is as follows: adding hydrogen-containing silicone oil, isopropanol and a catalyst into a three-neck flask, stirring, raising the temperature of the three-neck flask to slightly reflux the system, dropwise adding a mixed solution into the three-neck flask, carrying out heat preservation reaction for 4-6h after the dropwise adding is finished, and carrying out post-treatment to obtain the modified polysiloxane.
7. The high-temperature-resistant high-voltage cable for new energy automobiles according to claim 6, wherein the mixed solution is composed of perfluorohexyl ethylene and polyether F6 in a dosage ratio of 1g to 3g, the dosage ratio of hydrogen-containing silicone oil, isopropanol, catalyst and mixed solution is 4g to 14mL to 0.5g to 2g, and the catalyst is chloroplatinic acid.
8. The high-temperature and high-pressure resistant cable for new energy automobiles according to claim 1, wherein the composite cross-linking agent is processed by the following steps:
b1, adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, vinyl trimethoxy silane and an initiator into a three-neck flask protected by nitrogen, stirring, heating the three-neck flask to 75-85 ℃, carrying out heat preservation reaction for 6-8h, adding 3mol/L hydrochloric acid solution and N, N-dimethylformamide into the three-neck flask, carrying out heat preservation reaction for 22-26h, and carrying out aftertreatment to obtain modified DOPO;
and B2, adding the modified DOPO and 0.1mol/L hydrochloric acid into a three-neck flask, performing ultrasonic dispersion for 30-50min, fixing the three-neck flask on an iron stand with mechanical stirring, slowly dropwise adding 30wt% trimethoxysilane/absolute ethyl alcohol solution into the three-neck flask at room temperature, performing heat preservation reaction for 60-80min after dropwise adding, and performing post-treatment to obtain the composite cross-linking agent.
9. The high-temperature and high-voltage resistant cable for new energy automobiles according to claim 6, wherein the usage amount ratio of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, vinyltrimethoxysilane, initiator, 3mol/L hydrochloric acid solution and N, N-dimethylformamide in the step B1 is 21.6g:19g:1g:28mL:100mL, and the initiator is azobisisobutyronitrile; the dosage ratio of the modified DOPO, the 0.1mol/L hydrochloric acid and the 30wt% trimethoxysilane/absolute ethanol solution in the step B2 is 1g to 5mL to 5g.
10. The high-temperature-resistant high-voltage cable for new energy automobiles according to claim 1, wherein in the step S3, the consumption ratio of polyvinyl chloride, modified chlorinated polyvinyl chloride, modified polysiloxane, filler, composite cross-linking agent, chloroplatinic acid and additive is 100g:25g:15g:20g:10g:3g:5g, the rotating speed of a two-roll mill is 30-40r/min, the mixing temperature is 140-150 ℃, the mixing time is 60-80min, the filler is gypsum powder, the additive consists of one or more of dispersing agent, antioxidant, antistatic agent and lubricant according to the proportion of 1g:1g:2g, wherein the dispersing agent is one or more of sodium stearate, calcium stearate, zinc stearate and cadmium stearate, the antioxidant is one or more of butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone, the antioxidant is one of sodium nonylphenoxy propane sulfonate and potassium p-nonyl diphenyl ether sulfonate, and the lubricant is one of butyl stearate and paraffin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311201891.2A CN117238570A (en) | 2023-09-18 | 2023-09-18 | High-temperature-resistant high-voltage cable for new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311201891.2A CN117238570A (en) | 2023-09-18 | 2023-09-18 | High-temperature-resistant high-voltage cable for new energy automobile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621109A (en) * | 2020-06-30 | 2020-09-04 | 江苏益帆高分子材料有限公司 | Flame-retardant polyvinyl chloride insulation shielding control cable material |
| EP3812199A1 (en) * | 2019-10-25 | 2021-04-28 | Acome | Cable with improved heat dissipation |
| CN114464363A (en) * | 2021-12-20 | 2022-05-10 | 华为数字能源技术有限公司 | Liquid cooling cable, charging gun and charging equipment |
| CN116052942A (en) * | 2023-03-21 | 2023-05-02 | 国网电力科学研究院有限公司 | Cooling cable, charging connecting device and charging equipment |
-
2023
- 2023-09-18 CN CN202311201891.2A patent/CN117238570A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3812199A1 (en) * | 2019-10-25 | 2021-04-28 | Acome | Cable with improved heat dissipation |
| CN111621109A (en) * | 2020-06-30 | 2020-09-04 | 江苏益帆高分子材料有限公司 | Flame-retardant polyvinyl chloride insulation shielding control cable material |
| CN114464363A (en) * | 2021-12-20 | 2022-05-10 | 华为数字能源技术有限公司 | Liquid cooling cable, charging gun and charging equipment |
| CN116052942A (en) * | 2023-03-21 | 2023-05-02 | 国网电力科学研究院有限公司 | Cooling cable, charging connecting device and charging equipment |
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Country or region after: China Address after: 238331 Yaogou Industrial Zone, Wuwei City, Wuhu City, Anhui Province Applicant after: Anhui Expedition Transmission Technology Co.,Ltd. Address before: 238335 YAOGOU Industrial Zone, Wuwei County, Wuhu City, Anhui Province Applicant before: ANHUI YUANZHENG CABLE TECHNOLOGY Co.,Ltd. Country or region before: China |