CN105038087A - Halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles and wire and cable production method - Google Patents
Halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles and wire and cable production method Download PDFInfo
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Abstract
The invention discloses a halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles. The wire and cable compound comprises the following components in parts by weight: 100 parts of styrene-ethylene/butadiene-styrene block copolymer (SEBS), 20-60 parts of polypropylene, 5-20 parts of alkene polymer, 0.3-3 parts of antioxidant, 40-90 parts of halogen-free flame retardant, 20-60 parts of charring agent, 0.5-3 parts of processing aids and 15-80 parts of softening and plasticizing agent. The invention also discloses a production method for preparing wires and cables with the wire and cable compound. Through radiation micro-crosslinking, the wire and cable products prepared with the cable compound have excellent tear resistance, higher physical and mechanical properties and good electric insulation property, achieve excellent flame retardance under the premise of satisfying environmental protection, also have the advantage of high production efficiency and can be widely applied to the field of new energy, such as cables used for electric vehicles.
Description
Technical field
The invention belongs to cable for car material and manufacture field, be specifically related to a kind of high anti-tear halogen-free flameproof electromobile wire cable material and electric wire preparation method.
Background technology
In environment and energy problem increasingly serious today, electric vehicle engineering has attracted the research and development enthusiasm of numerous domestic and international manufacturer as eco-friendly new forms of energy science and technology, and the supporting basic electrically-charging equipment construction of electromobile also becomes development priority.
At present, on market, electromobile high-tension battery wire is single core insulation and adds jacket structure type cable, and sheath material is thermoplastic elastomer (TPE) material.For styrene-ethylene/butadiene-styrene block copolymer (SEBS), one of its main substitute as traditional cable material polyvinyl chloride (PVC), meeting under eco-friendly prerequisite, maintain workability and mechanical property, weather-proof, resistance toheat is also improved simultaneously.But lower oxygen index (18%) makes SEBS can produce thick smoke and molten drop when burning, and flame retardant effect is unsatisfactory.Existing patent is as US2009/0088502A1, US2009/00884577A1, CN101824201A, CN100509938C respectively describes the improvement of flame retardant properties added the polyphenylene oxide (PPO) with charcoal function and bring, but adding of polyphenylene oxide not only makes the difficulty of processing of compound system increase, and more easily there is the situation of cracking, affect the materials'use life-span.
In the use procedure of cable for car, long-term shearing, tension load and bending deformation can make cable sheath fatigue aging, make cable sheath show cracking phenomena, cannot meet normal use.About the patent report of high anti-tear CABLE MATERIALS is as CN101864101A, CN102408638A, CN103102543A, CN103589022A is mainly used in engineering cable field, there is some weak point following: (1) Halogen base material can produce a large amount of toxic gases as selecting of chloroprene rubber, chlorinatedpolyethylene, chlorosulfonated polyethylene etc. when burning, and does not meet environmental requirement; (2) adopt plastic body resin to be that base material raising hardness can lose cable flexibility to strengthen impart tear, feel is undesirable; (3) chemically crosslinked is because make the inadequate clean environment firendly of CABLE MATERIALS adding of vulcanizing agent, and produces efficient not.
The existing patent report about cable used for electric vehicle focuses mostly in structure design etc., and less about the anti-tear performance study of height of cable used for electric vehicle.Therefore a kind of halogen-free flame-retardant thermoplastic elastomer matrix material possessing high impart tear is developed necessary.
Cross-linking radiation, can by realizing the lifting of CABLE MATERIALS physicals, thermotolerance and flame retardant properties as the technique means of widespread use in cable production by the chain-like structure three-dimensional network of polymkeric substance.In the present invention, the course of processing of compound system adopts low dose irradiation to realize the micro-crosslinked of base material, under the prerequisite taking into account environmental protection and flame retardant effect, realize the significantly reduction of non-reversible deformation, effectively improve the tear resistance of cable sheath used for electric vehicle.
Summary of the invention
The present invention is directed to existing issue, a kind of anti-tear halogen-free flame-retardant thermoplastic elastomer matrix material of height based on styrene-ethylene/butylene-styrene block copolymer (SEBS) and preparation method thereof is provided, and using it as cable sheath material used for electric vehicle.Under the guarantee environment friendly of sheath and the prerequisite of flame retardant properties, achieve the significantly lifting of tear resistance, cable used for electric vehicle can be run reliably and with long-term under complex environment.
For achieving the above object, the invention provides a kind of high anti-tear halogen-free flameproof electromobile wire cable material, being made up of the feed composition of following weight part:
SEBS100 part;
Polypropylene 20 ~ 60 parts;
Olefin polymer 5 ~ 20 parts;
Fire retardant 40 ~ 80 parts;
Char-forming agent 20 ~ 60 parts;
0.3 ~ 3 part, oxidation inhibitor;
Processing aid 0.3 ~ 3 part;
Softening 15 ~ 80 parts, softening agent.
Preferably, olefin polymer used is one or more the combination in polyethylene (PE), polyolefin elastomer (POE) and ethylene-vinyl acetate copolymer (EVA).
Preferably, fire retardant used is one or more the combination in the melamine cyanurate (MCA) in organonitrogen, phosphorus flame retardant, organic hypophosphite.
Preferably, char-forming agent used is two (diphenyl phosphoester) (RDP) of Resorcinol, one or both the combination in dihydroxyphenyl propane-bis-(diphenyl phosphoester) (BDP).
Preferably, softening softening agent used is one or both the combination in naphthenic oil and white oil.
The preparation method of described height anti-tear halogen-free flameproof electromobile wire cable material, comprises the following steps:
1) batch weighing: weigh good various raw material by formula.
2) powder mixing is played: load weighted SEBS, polypropylene, olefin polymer, oxidation inhibitor, fire retardant, char-forming agent, processing aid, softening softening agent added after stirring in high-speed mixer, discharging, obtains mixture.
3) compound melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.
3) described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1 ~ 5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
The invention has the beneficial effects as follows: the present invention adopts SEBS to be main base material, and introduces the polypropylene of excellent physical properties, improve mechanical property and the melt processability of matrix material of the present invention; And there is the olefin polymer of excellent processability as polyethylene (PE), polyolefin elastomer (POE) and ethylene-vinyl acetate copolymer (EVA), the processing characteristics of extruding of matrix material of the present invention is got a promotion, and the good one-tenth charcoal of EVA also make the flame retardant properties of compound system have larger improvement; Not only flame retarding efficiency is excellent for the nitrogen of organic Halogen, phosphorus flame-retardant system, and keeps excellent compatibility with base material, can not cause the obvious reduction of base material mechanical property and processing characteristics; Because fire retardant is not halogen-containing, in use can not to be heated or the sun is exposed to the sun and produces poisonous halogen-containing materials, environmental protection because of energising; Low irradiation dose makes to produce between substrate molecule chain lightly crosslinked, this micro-crosslinking structure greatly reduces the non-reversible deformation that matrix material produces when being subject to complex external force, the tear resistance of matrix material is significantly improved, and thermotolerance have obvious lifting; Cross-linking radiation is compared chemicure method and is had more clean feature, and the matrix material carbon-forming performance after irradiation has obvious lifting, promotes flame retardant effect further.In addition, the present invention is base material with SEBS, has good hand touch, elasticity is adjustable (ShoreA60 ~ 90A) a feature, realizes the mechanical property of SEBS, resistance toheat simultaneously.
Embodiment
By describing technology contents of the present invention, formula rate in detail, being realized object and effect, be explained in detail below in conjunction with embodiment.
Below describe several specific embodiments that present embodiment produces high anti-tear halogen-free flameproof cable used for electric vehicle, unless otherwise indicated, all numbers all by weight:
embodiment 1
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 30 parts;
POE15 part;
Metallocene PE (mPE) 5 parts;
Melamine cyanurate (MCA) 40 parts;
Organic hypophosphite 25 parts;
BDP35 part;
Antioxidant 1010+1681 parts;
Dimethyl silicone oil 2 parts;
White oil 40 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1 ~ 5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
embodiment 2
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 60 parts;
POE10 part;
Organic hypophosphite 70 parts;
RDP25 part;
Antioxidant 1010 2 parts;
Dimethyl silicone oil 3 parts;
White oil 65 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1-5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
embodiment 3
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 30 parts;
EVA10 part;
MPE10 part
MCA60 part;
RDP30 part;
Antioxidant 1010 1 part;
Polyethylene wax 1.5 parts;
White oil 30 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1-5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
embodiment 4
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 30 parts;
EVA20 part;
MCA70 part;
RDP30 part;
Antioxidant 1010 1 part;
Dimethyl silicone oil 1.5 parts;
Naphthenic oil 30 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1-5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
embodiment 5
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 40 parts;
MPE10 part;
Organic hypophosphite 65 parts;
BDP40 part;
Antioxidant 1010 2 parts;
Polyethylene wax 2 parts;
Naphthenic oil 60 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1-5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
embodiment 6
Fill a prescription composed as follows:
SEBS100 part;
Polypropylene 40 parts;
EVA20 part;
MCA70 part;
BDP30 part;
Antioxidant 300 3 parts;
Dimethyl silicone oil 2 parts;
White oil 50 parts.
Preparation process is as follows:
After weighing and add by above-mentioned component formula and stir in high-speed mixer, discharging, obtains mixture.Compound is melt extruded at 175-210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch.Described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1-5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
The performance perameter table that the anti-tear halogen-free flameproof of the height cable used for electric vehicle that table 1 is produced for embodiment 1 ~ 6 is mainly tested.
The performance perameter table that table 1 is tested
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Tensile strength (MPa) | 11.2 | 13 | 13.4 | 12.6 | 13.6 | 12 |
| Elongation at break (%) | 230 | 270 | 320 | 340 | 280 | 310 |
| 136 DEG C of aging rear tensile strength conservation rates (%) | 92 | 87.7 | 90.3 | 86.1 | 85 | 89.4 |
| 136 DEG C of aging rear elongation at break conservation rates (%) | 89.2 | 84 | 87.9 | 83 | 83.4 | 91 |
| Thermal distortion (121 DEG C × 1h) | 25% | 10% | 22% | 24% | 18% | 18.5% |
| Clod wash (-40 DEG C × 1h) | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture |
| Hardness (Shore A) | 82 | 89 | 83 | 84 | 85 | 85 |
| Dielectric strength (MV/m) | 24 | 25 | 26 | 25 | 24 | 25 |
| Flame retardant rating | VW-1 | VW-1 | VW-1 | VW-1 | VW-1 | VW-1 |
The present invention adopts SEBS to be main base material, and introduces the polypropylene of excellent physical properties, improves mechanical property and the melt processability of matrix material of the present invention; And there is the olefin polymer polyethylene (PE) of excellent processability, polyolefin elastomer (POE) and ethylene-vinyl acetate copolymer (EVA), the processing characteristics of extruding of matrix material of the present invention is got a promotion, and the good one-tenth charcoal of EVA also make the flame retardant properties of compound system have larger improvement; Not only flame retarding efficiency is excellent for the nitrogen of organic Halogen, phosphorus flame-retardant system, and keeps excellent compatibility with base material, can not cause the obvious reduction of base material mechanical property and processing characteristics; Because fire retardant is not halogen-containing, in use can not to be heated or the sun is exposed to the sun and produces poisonous halogen-containing materials, environmental protection because of energising; Low irradiation dose makes to produce between substrate molecule chain lightly crosslinked, this micro-crosslinking structure greatly reduces the non-reversible deformation that matrix material produces when being subject to complex external force, the tear resistance of matrix material is significantly improved, and thermotolerance have obvious lifting; Cross-linking radiation is compared chemicure method and is had more clean feature, and the matrix material carbon-forming performance after irradiation has obvious lifting, promotes flame retardant effect further.In addition, the present invention is base material with SEBS, has good hand touch, elasticity is adjustable (ShoreA60 ~ 90A) a feature, realizes the mechanical property of SEBS, resistance toheat simultaneously.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but to be anyly equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (6)
1. a high anti-tear halogen-free flameproof electromobile wire cable material, is characterized in that, comprise following composition by weight:
Styrene-ethylene/butadiene-styrene block copolymer (SEBS) 100 parts;
Polypropylene 20 ~ 60 parts;
Olefin polymer 5 ~ 20 parts;
Fire retardant 40 ~ 80 parts;
Char-forming agent 20 ~ 60 parts;
0.3 ~ 3 part, oxidation inhibitor;
Processing aid 0.3 ~ 3 part;
Softening 15 ~ 80 parts, softening agent.
2. high anti-tear halogen-free flameproof electromobile wire cable material as claimed in claim 1, it is characterized in that, described olefin polymer adopts one or more combination of polyethylene (PE), polyolefin elastomer (POE) and ethylene-vinyl acetate copolymer (EVA).
3. high anti-tear halogen-free flameproof electromobile wire cable material as claimed in claim 1, is characterized in that, described fire retardant adopts the melamine cyanurate (MCA) in nitrogen, phosphorus flame retardant, one or more the combination in organic hypophosphite.
4. high anti-tear halogen-free flameproof electromobile wire cable material as claimed in claim 1, it is characterized in that, described char-forming agent adopts two (diphenyl phosphoester) (RDP) of Resorcinol, one or both the combination of dihydroxyphenyl propane-bis-(diphenyl phosphoester) (BDP).
5. high anti-tear halogen-free flameproof electromobile wire cable material as claimed in claim 1, it is characterized in that, described softening softening agent is one or both combination of naphthenic oil and white oil.
6. a production method for high anti-tear halogen-free flameproof electric wire used for electric vehicle, comprises the following steps:
1) batch weighing: weighed various raw material by anti-tear halogen-free flameproof electromobile electric wire material formula high described in claim 1 ~ 5;
2) powder mixing is played: load weighted SEBS, polypropylene, olefin polymer, oxidation inhibitor, fire retardant, char-forming agent, processing aid, softening softening agent added after stirring in high-speed mixer, discharging, obtains mixture;
3) compound melt extruded at 175 ~ 210 DEG C by the twin screw extruder that length-to-diameter ratio is larger, tie rod, cooling, granulation, obtain high anti-tear halogen-free flameproof electromobile wire cable material finished product masterbatch;
4) described finished wire CABLE MATERIALS extrudes wire rod through twin screw extruder and conductor (metallic conductor such as copper or aluminium), is cross-linked by gained wire rod, cross-linked dosage 1 ~ 5Mrad by electron accelerator irradiation, can obtain high anti-tear halogen-free flameproof cable used for electric vehicle.
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| CN201510509549.8A CN105038087A (en) | 2015-08-19 | 2015-08-19 | Halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles and wire and cable production method |
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| CN201510509549.8A CN105038087A (en) | 2015-08-19 | 2015-08-19 | Halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles and wire and cable production method |
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| CN105295286A (en) * | 2015-12-14 | 2016-02-03 | 苏州鑫德杰电子有限公司 | Heat-resistant high-strength insulation material and preparation method thereof |
| CN105482348A (en) * | 2015-12-16 | 2016-04-13 | 无锡吉进环保科技有限公司 | Preparation method of flame-retardant environment-friendly material |
| CN105623179A (en) * | 2015-12-10 | 2016-06-01 | 上海至正道化高分子材料股份有限公司 | Anti-yellowing halogen-free flame retardant thermoplastic elastomer and preparation method thereof |
| CN105968872A (en) * | 2016-05-31 | 2016-09-28 | 东莞市安拓普塑胶聚合物科技有限公司 | Halogen-free flame-retardant thermoplastic elastomer cable material for new energy automobile |
| CN106397966A (en) * | 2016-08-30 | 2017-02-15 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Real suture containing automobile dashboard material and preparation method thereof |
| CN107011574A (en) * | 2017-05-10 | 2017-08-04 | 江苏益帆高分子材料有限公司 | 125 DEG C of charging pile TPE protective cover materials and preparation method thereof of cross-linking radiation |
| CN108822520A (en) * | 2018-05-29 | 2018-11-16 | 项赛飞 | A kind of automobile parts high-temperature-resistant thermoplastic elastomer and preparation method thereof |
| CN108948644A (en) * | 2018-05-29 | 2018-12-07 | 项赛飞 | A kind of automobile parts thermoplastic elastomer (TPE) and preparation method thereof |
| CN109181122A (en) * | 2018-09-29 | 2019-01-11 | 中广核高新核材科技（苏州）有限公司 | Interior high voltage cable cross-linked elastomer CABLE MATERIALS, cable and preparation method thereof |
| CN109575499A (en) * | 2018-11-02 | 2019-04-05 | 江苏亨通电子线缆科技有限公司 | A kind of crosslinking TPE material of the high-elastic resistance to voltage cable of automobile-used highly-flexible |
| CN110396229A (en) * | 2019-08-13 | 2019-11-01 | 中辰电缆股份有限公司 | A kind of new-energy automobile charging pile cable material and preparation method thereof |
| CN111234437A (en) * | 2018-11-29 | 2020-06-05 | 天长市富信电子有限公司 | Production method of thermoplastic elastomer material for signal transmission line |
| WO2021114758A1 (en) * | 2019-12-11 | 2021-06-17 | 上海凯波特种电缆料厂有限公司 | Flame-retardant tpe sheath material, preparation method therefor and application thereof |
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| CN105295286A (en) * | 2015-12-14 | 2016-02-03 | 苏州鑫德杰电子有限公司 | Heat-resistant high-strength insulation material and preparation method thereof |
| CN105482348A (en) * | 2015-12-16 | 2016-04-13 | 无锡吉进环保科技有限公司 | Preparation method of flame-retardant environment-friendly material |
| CN105968872B (en) * | 2016-05-31 | 2018-04-24 | 东莞市安拓普塑胶聚合物科技有限公司 | Halogen-free flame-retardant thermoplastic elastomer new-energy automobile cable material |
| CN105968872A (en) * | 2016-05-31 | 2016-09-28 | 东莞市安拓普塑胶聚合物科技有限公司 | Halogen-free flame-retardant thermoplastic elastomer cable material for new energy automobile |
| CN106397966A (en) * | 2016-08-30 | 2017-02-15 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Real suture containing automobile dashboard material and preparation method thereof |
| CN107011574A (en) * | 2017-05-10 | 2017-08-04 | 江苏益帆高分子材料有限公司 | 125 DEG C of charging pile TPE protective cover materials and preparation method thereof of cross-linking radiation |
| CN108822520A (en) * | 2018-05-29 | 2018-11-16 | 项赛飞 | A kind of automobile parts high-temperature-resistant thermoplastic elastomer and preparation method thereof |
| CN108948644A (en) * | 2018-05-29 | 2018-12-07 | 项赛飞 | A kind of automobile parts thermoplastic elastomer (TPE) and preparation method thereof |
| CN109181122A (en) * | 2018-09-29 | 2019-01-11 | 中广核高新核材科技（苏州）有限公司 | Interior high voltage cable cross-linked elastomer CABLE MATERIALS, cable and preparation method thereof |
| CN109181122B (en) * | 2018-09-29 | 2021-04-06 | 中广核高新核材科技（苏州）有限公司 | Crosslinked elastomer cable material for high-voltage cable in vehicle, cable and preparation method of cable |
| CN109575499A (en) * | 2018-11-02 | 2019-04-05 | 江苏亨通电子线缆科技有限公司 | A kind of crosslinking TPE material of the high-elastic resistance to voltage cable of automobile-used highly-flexible |
| CN111234437A (en) * | 2018-11-29 | 2020-06-05 | 天长市富信电子有限公司 | Production method of thermoplastic elastomer material for signal transmission line |
| CN110396229A (en) * | 2019-08-13 | 2019-11-01 | 中辰电缆股份有限公司 | A kind of new-energy automobile charging pile cable material and preparation method thereof |
| WO2021114758A1 (en) * | 2019-12-11 | 2021-06-17 | 上海凯波特种电缆料厂有限公司 | Flame-retardant tpe sheath material, preparation method therefor and application thereof |
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Application publication date: 20151111 |