CN110951124A - High-performance cable material for charging pile and preparation method thereof - Google Patents
High-performance cable material for charging pile and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-performance cable material for a charging pile, which belongs to the technical field of cable material preparation and comprises the following raw materials: the material comprises the following raw materials of powdered nitrile butadiene rubber, modified epoxy resin, styrene butadiene rubber, PVC resin, ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a modified heat-resistant agent, vinyl triethoxysilane, a promoter TMDT, zinc oxide, stearic acid, an anti-aging agent RD, a silane coupling agent A187 and tetrabromobisphenol A; the high-performance cable material for the charging pile is prepared by preparing a base material, preparing a modified material and mixing a main material and the modified material. The cable material prepared by the invention has excellent heat resistance.
Description
Technical Field
The invention belongs to the technical field of cable material preparation, and particularly relates to a high-performance cable material for a charging pile and a preparation method thereof.
Background
In the aspect of cables for new energy automobile charging piles, polyurethane sheath materials, rubber sheath materials, insulating materials, TPE sheath materials and insulating materials are mostly used at present, among the materials, the polyurethane materials are poor in processing performance and high in price, the rubber materials are greatly limited in processing technology and processing equipment, the TPE materials are good in overall performance and high in cost performance, but performance defects such as weather resistance, oil resistance, thermal aging resistance and thermal stress cracking exist, and further improvement and solution are needed; the PVC material is used as the universal plastic with the most extensive application, large using amount and the longest application history, the technology is continuously developed, and the problems of environmental pollution, poor thermal property, combustion smoke generation amount and the like which puzzle people in the past are continuously solved through a novel process and a novel technology; at present, PVC products are widely applied in the fields of medicine, food, cable materials, automobile interior wires and the like, and are also more widely applied by virtue of higher performance, reasonable price and ultrahigh cost performance.
Chinese patent application document 'a cable material for a new energy automobile charging pile cable sheath and a preparation method thereof (publication number: CN 108102251A)' discloses a cable material for a new energy automobile charging pile cable sheath and a preparation method thereof. The cable material for the new energy automobile charging pile cable sheath comprises the following components in parts by weight: PVC resin: 100 parts of plasticizer A: 20-50 parts of plasticizer B: 10-30 parts of plasticizer C: 4-15 parts of functional additive A: 30-60 parts of functional additive B: 8-13 parts of a filling additive: 8-20 parts. The problem that the flexibility, the environmental protection, the flame retardance, the low smoke and the high performance of the PVC cable material cannot be considered at the same time is solved, and the problems of high and low temperature resistance (the use temperature is-40 ℃ to 105 ℃) and thermal stability (the short-term 200 ℃ thermal stability time and the long-term 135 ℃ plus 240Hour thermal aging are contradictory) of the PVC cable material are solved. But the heat resistance thereof cannot meet the requirements in practical use.
Disclosure of Invention
The invention aims to provide a high-performance cable material for charging piles and a preparation method thereof, and aims to solve the problems of how to optimize components, dosage, methods and the like and improve the heat resistance of the cable material on the basis of the high-performance cable material for charging piles disclosed in patent application documents, namely, a cable material for a new energy automobile charging pile cable sheath and a preparation method thereof (publication number: CN 108102251A).
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-performance cable material for the charging pile comprises the following raw materials: the material comprises the following raw materials of powdered nitrile butadiene rubber, modified epoxy resin, styrene butadiene rubber, PVC resin, ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a modified heat-resistant agent, vinyl triethoxysilane, a promoter TMDT, zinc oxide, stearic acid, an anti-aging agent RD, a silane coupling agent A187 and tetrabromobisphenol A;
the modified epoxy resin comprises the following raw materials in parts by weight: 4-8 parts of silane coupling agent KH-550, 10-20 parts of ethanol-water solution, 4-8 parts of kapok, 6-9 parts of fumed silica, 60-80 parts of AG-80 epoxy resin and 40-50 parts of nano fully-vulcanized carboxyl nitrile rubber;
the modified heat-resistant agent comprises the following raw materials in parts by weight: 15-25 parts of polymethyl methacrylate, 8-16 parts of polyvinylidene fluoride, 4-8 parts of benzoyl peroxide, 3-6 parts of polypropylene, 2-6 parts of silane coupling agent KH-5502, 1-5 parts of potassium persulfate, 4-8 parts of aluminum polyphosphate, 3-6 parts of nano aluminum nitride, 2-5 parts of mica powder, 4-8 parts of nano aluminum hydroxide, 3-9 parts of antimony trioxide and 2-6 parts of zinc phenylphosphoric acid;
the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyl triethoxysilane is (10-30): (3-9): (5-7): (15-25): (2-5).
Further, the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyl triethoxysilane is 20.4: 6.2: 5.8: 19.8: 3.6.
further, the feed comprises the following raw materials in parts by weight: 40-60 parts of powdered nitrile butadiene rubber, 10-30 parts of modified epoxy resin, 4-8 parts of styrene butadiene rubber, 20-30 parts of PVC resin, 4-8 parts of ammonium polyphosphate, 3-9 parts of aluminum hydroxide, 5-7 parts of magnesium hydroxide, 1-5 parts of silicon-hydrogen-containing group, 4-10 parts of cellulose ether, 3-9 parts of carbon black N3303, 6-9 parts of glass fiber and 4-8 parts of sodium silicate, 5-10 parts of chlorinated paraffin, 1-3 parts of dimethyl silicone oil, 6-10 parts of expanded vermiculite, 15-25 parts of modified heat-resistant agent, 2-5 parts of vinyl triethoxysilane, 3-9 parts of accelerator TMDT, 4-8 parts of zinc oxide, 3-6 parts of stearic acid, 2-6 parts of anti-aging agent RD, 4-8 parts of silane coupling agent A1874 and 3-9 parts of tetrabromobisphenol A.
Further, the modified heat-resistant agent is prepared by the following process: uniformly mixing polymethyl methacrylate, polyvinylidene fluoride and benzoyl peroxide, heating to 60-80 ℃, keeping the temperature for 20-40min, adding polypropylene, silane coupling agent KH-550, potassium persulfate and aluminum polyphosphate, uniformly mixing, stirring at the rotation speed of 650 plus one year 850r/min for 10-30min, adjusting the pH value to 3.5-5.0, heating to 65-75 ℃, keeping the temperature for 0.5-1.5h, washing, drying at the temperature of 65-75 ℃ in vacuum to constant weight, cooling to room temperature, adding nano aluminum nitride, mica powder, nano aluminum hydroxide, antimony trioxide and zinc phenylphosphoric acid, uniformly mixing, stirring at the rotation speed of 80-120r/min for 10-20min, heating to 150 plus one year 160 ℃, keeping the temperature for 10-20min, and cooling to room temperature to obtain the modified heat-resistant agent.
Further, the modified epoxy resin is prepared by the following process: uniformly mixing a silane coupling agent KH-550 and an ethanol-water solution, standing for 0.5-1.5h, then adding kapok and gas-phase silica, uniformly mixing, and stirring at the rotating speed of 650-; uniformly mixing AG-80 epoxy resin, nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 80-120 ℃, preserving heat for 4-6h, stirring continuously in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
The invention provides a preparation method of a high-performance cable material for a charging pile, which comprises the following steps:
s1, uniformly mixing the powdered nitrile rubber, the styrene butadiene rubber and the ammonium polyphosphate, heating to 120-;
s2, uniformly mixing the modified epoxy resin and the PVC resin, heating to 110-130 ℃, preserving heat for 20-40min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing group, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, accelerant TMDT, zinc oxide, stearic acid and anti-aging agent RD, uniformly mixing, stirring at the rotating speed of 850-1050r/min for 1-2h, continuously heating to 80-90 ℃, preserving heat for 5-15min, adding the modified heat-resistant agent and vinyltriethoxysilane, uniformly mixing, stirring at the rotating speed of 2500-3500r/min for 5-15min, and cooling to room temperature to obtain a modified material;
s3, heating the base material obtained in the step S1 to 110-.
Further, S1 includes adding silane coupling agent A187 and tetrabromobisphenol A into the base material, magnetically stirring under nitrogen protection, and reacting at 130-150 deg.C for 3-5h to obtain the modified base material.
Further, the rotation speed of the magnetic stirring is 450-650 r/min.
The invention has the following beneficial effects:
(1) as can be seen from the data of examples 1 to 3 and comparative example 7, the heat resistance of the cable material for the high-performance charging pile prepared in examples 1 to 3 is significantly higher than that of the cable material prepared in comparative example 7; meanwhile, as can be seen from the data of examples 1 to 3, example 1 is the most preferred example.
(2) As can be seen from the data of example 1 and comparative examples 1 to 6, the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyltriethoxysilane play a synergistic role in preparing the cable material protective sleeve for the high-performance charging pile, and the heat resistance of the cable material for the high-performance charging pile is synergistically improved; this is:
the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyl triethoxysilane are used as a reinforcing system, the modified epoxy resin is used as base rubber, the aluminum hydroxide and the magnesium hydroxide are used as heat-resistant fillers, the surface of the aluminum hydroxide and the magnesium hydroxide contains a large amount of hydroxyl groups, the hydroxyl groups can be connected and combined with unsaturated bonds on the surface of the modified epoxy resin under the action of the vinyl triethoxysilane, when a single modified epoxy resin is heated or burnt, the outer surface of the single modified epoxy resin is directly contacted with a heat source, so that the self temperature of the modified epoxy resin is too high, good heat insulation and heat dispersion effects cannot be achieved, after the aluminum hydroxide and the magnesium hydroxide are connected on the surface, the volume of the modified epoxy resin is increased, on the other hand, the aluminum hydroxide and the magnesium hydroxide can absorb heat, and the modified epoxy, the modified epoxy resin has the advantages that a good heat insulation effect is achieved, on the other hand, oxygen can be consumed when the aluminum hydroxide and the magnesium hydroxide are heated and combusted, the surface of the modified epoxy resin is in an oxygen-free state, and accordingly the flame retardant effect is achieved, the aluminum hydroxide and the magnesium hydroxide are connected to the surface of the modified epoxy resin in a large amount, and a large amount of oxygen on the surface of the SEBS can be consumed, so that the flame retardant effect is further improved. The performance of aluminum hydroxide and magnesium hydroxide as heat-resistant fillers is utilized to realize the reinforcement of the heat-resistant performance of the modified epoxy resin. And the addition of the modified heat-resistant agent realizes the connection of hydroxyl on the surface of the modified heat-resistant agent and unsaturated bonds of the modified epoxy resin under the action of the vinyltriethoxysilane, and effectively realizes the reinforcement effect on the heat resistance of the modified epoxy resin.
The added modified heat-resistant agent takes polymethyl methacrylate, polyvinylidene fluoride and polypropylene as heat-resistant base resin, aluminum polyphosphate, nano aluminum nitride, mica powder, nano aluminum hydroxide, antimony trioxide and zinc phenylphosphoric acid are taken as heat-resistant reinforcing fillers, potassium persulfate and benzoyl peroxide are taken as initiators, a silane coupling agent KH-550 is taken as a connecting substance between the heat-resistant reinforcing filler and the base resin, the bond energy of active bonds on the surface of the heat-resistant reinforcing filler is improved through the catalytic action of the initiator, the heat-resistant reinforcing filler can be connected and wrapped on the surface of the base resin, the heat-resistant reinforcement of the base resin is realized by utilizing the high heat resistance of the heat-resistant reinforcing filler, and the hydroxyl on the surface of the heat-resistant reinforcing filler is connected with the unsaturated bond on the surface of the modified epoxy resin under the action of the vinyl triethoxysilane, so that the heat-resistant performance of the modified epoxy resin is reinforced by the modified heat-resistant agent.
The added modified epoxy resin is prepared by uniformly mixing a silane coupling agent KH-550 and an ethanol-water solution, standing, adding kapok and gas-phase silica, uniformly mixing, and stirring to obtain a material a; AG-80 epoxy resin, nano fully-vulcanized carboxyl nitrile rubber and a material a are mixed to obtain modified epoxy resin, the AG-80 epoxy resin is used as a base material, the kapok and fumed silica are modified by a silane coupling agent KH-550, the surfaces of the kapok and the fumed silica contain a plurality of hydroxyl groups, the silane coupling agent KH-550 belongs to a long-chain high-molecular material, the long chain of the silane coupling agent KH-550 can be bent according to the shape structure of a wrapping material, unsaturated bonds on the surface of the silane coupling agent KH-550 are respectively connected with the hydroxyl groups on the surfaces of the kapok and the fumed silica, the silane coupling agent KH-550 is wrapped on the outer surfaces of the kapok and the fumed silica respectively, on one hand, the surface area and the volume of the kapok and the fumed silica are increased, and the kapok and the fumed silica are not easy to agglomerate with a solvent during mixing, the ceiba and the fumed silica wrapped by the silane coupling agent KH-550 can be connected with the AG-80 epoxy resin unsaturated bond by utilizing the hydroxyl on the surface of the silane coupling agent KH-550, so that the ceiba and the fumed silica are attached to the periphery of the AG-80 epoxy resin, the AG-80 epoxy resin wrapped by the ceiba and the fumed silica is increased in surface area, when the AG-80 epoxy resin is subjected to external force, on one hand, the high mechanical property of the ceiba and the fumed silica is utilized to realize buffering, on the other hand, the wrapping of the ceiba and the fumed silica realizes the increase of the surface area, partial extrusion force is dispersed, the surface energy of the modified AG-80 epoxy resin is also increased, the impact resistance is further improved, and due to the connection effect of the silane coupling agent KH-550, the compatibility of the modified AG-80 epoxy resin and an epoxy resin encapsulating material system is improved, is not easy to settle out. The added nano fully vulcanized carboxyl nitrile rubber has a tough group, the epoxy resin realizes the reaction of carboxyl in the nano fully vulcanized carboxyl nitrile rubber and epoxy group in the epoxy resin under the catalysis of a silane coupling agent KH-550, so that rubber blocks are in a cross-linked structure of the epoxy resin to obtain good mechanical property and heat resistance, kapok, fumed silica and the nano fully vulcanized carboxyl nitrile rubber are matched as a performance reinforcing material, the surface energy of the epoxy resin is improved on the premise of increasing the surface area of the epoxy resin by utilizing the combination of the hydroxyl on the surfaces of the kapok and the fumed silica and unsaturated bonds of the epoxy resin through the connection effect of the silane coupling agent KH-550, and the epoxy resin has excellent shock resistance due to the self high mechanical strength of the kapok and the fumed silica, and has good high temperature resistance and low temperature resistance, thereby ensuring that the modified epoxy resin has excellent high temperature resistance and low temperature resistance on the premise of excellent shock resistance.
(3) As can be seen from the data of comparative examples 8 to 10, the weight ratio of the modified epoxy resin, aluminum hydroxide, magnesium hydroxide, modified heat-resistant agent, vinyltriethoxysilane is not (15 to 25): (6-9): (4-8): (9-12): (1-3), the heat resistance values of the cable materials obtained were very different from those of examples 1-3, much smaller than those of examples 1-3, and not much different from those of the prior art (comparative example 7). In the embodiments 1 to 3 of the present invention, when preparing a high-performance cable material for a charging pile, the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyltriethoxysilane is controlled to (15 to 25): (6-9): (4-8): (9-12): (1-3), the modified epoxy resin is taken as the main raw material of a reinforcing system, aluminum hydroxide, magnesium hydroxide and a modified heat-resistant agent are taken as heat-resistant reinforcing fillers, vinyl triethoxysilane is used as a connecting agent of the filler and the base resin, so that the heat-resistant reinforcing filler is wrapped on the periphery of the base resin, the heat resistance of aluminum hydroxide, magnesium hydroxide and the modified heat-resistant agent is fully utilized, the heat-resistant reinforcing modification of the modified epoxy resin is realized by using a small amount of aluminum hydroxide, magnesium hydroxide, a modified heat-resistant agent and vinyl triethoxysilane, and a large amount of hydroxyl of a reinforcing system is combined with unsaturated bonds on the surface of the base material for preparing the cable material, so that the performances of the modified epoxy resin, aluminum hydroxide, magnesium hydroxide, a modified heat-resistant agent and vinyl triethoxysilane as a heat-resistant reinforcing system are fully utilized, and the heat-resistant performance of the cable material can be reinforced.
(4) According to the invention, in the process of preparing the base material, the silane coupling agent A187 and the tetrabromobisphenol A are added, the silane coupling agent A187 can realize the unsaturated bond connection of the hydroxyl on the surface of the base material and the surface of the tetrabromobisphenol A, and the hydroxyl on the silane coupling agent A187 is also in unsaturated connection with the surface of the base material, so that the tetrabromobisphenol A is indirectly connected on the base material, the coating of the agent material is realized, and the heat resistance and the reinforcement effect of the heat resistance of the tetrabromobisphenol A on the base material are utilized, so that the heat resistance of the prepared cable material is further improved.
Detailed Description
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
In the embodiment, the high-performance cable material for the charging pile comprises the following raw materials in parts by weight: 40-60 parts of powdered nitrile butadiene rubber, 10-30 parts of modified epoxy resin, 4-8 parts of styrene butadiene rubber, 20-30 parts of PVC resin, 4-8 parts of ammonium polyphosphate, 3-9 parts of aluminum hydroxide, 5-7 parts of magnesium hydroxide, 1-5 parts of silicon-hydrogen-containing group, 4-10 parts of cellulose ether, 3-9 parts of carbon black N3303, 6-9 parts of glass fiber and 4-8 parts of sodium silicate, 5-10 parts of chlorinated paraffin, 1-3 parts of dimethyl silicone oil, 6-10 parts of expanded vermiculite, 15-25 parts of modified heat-resistant agent, 2-5 parts of vinyl triethoxysilane, 3-9 parts of accelerator TMDT, 4-8 parts of zinc oxide, 3-6 parts of stearic acid, 2-6 parts of anti-aging agent RD, 4-8 parts of silane coupling agent A1874 and 3-9 parts of tetrabromobisphenol A.
The modified epoxy resin is prepared by the following process: uniformly mixing a silane coupling agent KH-550 and an ethanol-water solution, standing for 0.5-1.5h, then adding kapok and gas-phase silica, uniformly mixing, and stirring at the rotating speed of 650-; uniformly mixing AG-80 epoxy resin, nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 80-120 ℃, preserving heat for 4-6h, stirring continuously in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
The modified heat-resistant agent is prepared by the following process: uniformly mixing 15-25 parts by weight of polymethyl methacrylate, 8-16 parts by weight of polyvinylidene fluoride and 4-8 parts by weight of benzoyl peroxide, heating to 60-80 ℃, keeping the temperature for 20-40min, then adding 3-6 parts by weight of polypropylene, 2-6 parts by weight of silane coupling agent KH-550, 1-5 parts by weight of potassium persulfate and 4-8 parts by weight of aluminum polyphosphate, uniformly mixing, stirring at the rotating speed of 650 plus 850r/min for 10-30min, adjusting the pH to 3.5-5.0, heating to 65-75 ℃, keeping the temperature for 0.5-1.5h, drying at the temperature of 65-75 ℃ in vacuum after washing to constant weight, cooling to room temperature, then adding 3-6 parts by weight of nano aluminum nitride, 2-5 parts by weight of mica powder, 4-8 parts by weight of nano aluminum hydroxide, 3-9 parts by weight of antimony trioxide and 2-6 parts by weight of zinc phenylphosphonic acid, uniformly mixing, stirring at the rotating speed of 80-120r/min for 10-20min, heating to 160 ℃, preserving the heat for 10-20min, and cooling to room temperature to obtain the modified heat-resistant agent.
The preparation method of the cable material for the high-performance charging pile comprises the following steps:
s1, uniformly mixing powdered nitrile butadiene rubber, styrene butadiene rubber and ammonium polyphosphate, heating to 120-;
s2, uniformly mixing the modified epoxy resin and the PVC resin, heating to 110-130 ℃, preserving heat for 20-40min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing group, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, accelerant TMDT, zinc oxide, stearic acid and anti-aging agent RD, uniformly mixing, stirring at the rotating speed of 850-1050r/min for 1-2h, continuously heating to 80-90 ℃, preserving heat for 5-15min, adding the modified heat-resistant agent and vinyltriethoxysilane, uniformly mixing, stirring at the rotating speed of 2500-3500r/min for 5-15min, and cooling to room temperature to obtain a modified material;
s3, heating the base material obtained in the step S1 to 110-.
Example 1
The high-performance cable material for the charging pile comprises the following raw materials in parts by weight: 50 parts of powdered nitrile butadiene rubber, 20 parts of modified epoxy resin, 6 parts of styrene butadiene rubber, 25 parts of PVC resin, 6 parts of ammonium polyphosphate, 6 parts of aluminum hydroxide, 6 parts of magnesium hydroxide, 3 parts of silicon-hydrogen-containing groups, 7 parts of cellulose ether, 7 parts of carbon black N3306, 7.5 parts of glass fiber, 6 parts of sodium silicate, 7 parts of chlorinated paraffin, 2 parts of dimethyl silicone oil, 8 parts of expanded vermiculite, 20 parts of modified heat-resistant agent, 3.5 parts of vinyl triethoxysilane, 6 parts of accelerator TMDT, 6 parts of zinc oxide, 4.5 parts of stearic acid, 4 parts of anti-aging agent RD, 1876 parts of silane coupling agent A, and 6 parts of tetrabromobisphenol A.
The modified epoxy resin is prepared by the following process: uniformly mixing 6 parts by weight of silane coupling agent KH-550 and 15 parts by weight of ethanol-water solution, standing for 1h, then adding 6 parts by weight of kapok and 7.5 parts by weight of fumed silica, uniformly mixing, and stirring at the rotating speed of 750r/min for 40min to obtain a material a; uniformly mixing 70 parts of AG-80 epoxy resin, 45 parts of nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 100 ℃, preserving heat for 5 hours, continuously stirring in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
The modified heat-resistant agent is prepared by the following process: uniformly mixing 20 parts by weight of polymethyl methacrylate, 12 parts by weight of polyvinylidene fluoride and 6 parts by weight of benzoyl peroxide, heating to 70 ℃, preserving heat for 30min, adding 4.5 parts by weight of polypropylene, 4 parts by weight of silane coupling agent KH-550, 3 parts by weight of potassium persulfate and 6 parts by weight of aluminum polyphosphate, uniformly mixing at the rotating speed of 750r/min for 20min, adjusting the pH value to 4, heating to 70 ℃, preserving heat for 1h, drying at 70 ℃ in vacuum after washing to constant weight, cooling to room temperature, adding 4.5 parts by weight of nano aluminum nitride, 3.5 parts by weight of mica powder, 6 parts by weight of nano aluminum hydroxide, 6 parts by weight of antimony trioxide and 4 parts by weight of zinc phenylphosphonic acid, uniformly mixing at the rotating speed of 100r/min for 15min, heating to 155 ℃, preserving heat for 15min, and cooling to room temperature to obtain the modified heat-resistant agent.
The preparation method of the cable material for the high-performance charging pile comprises the following steps:
s1, uniformly mixing powdered nitrile butadiene rubber, styrene butadiene rubber and ammonium polyphosphate, heating to 125 ℃, preserving heat for 20min, stirring at a rotating speed of 2000r/min for 20min, cooling to room temperature to obtain a base material, adding a silane coupling agent A187 and tetrabromobisphenol A into the base material, magnetically stirring under the protection of nitrogen at a rotating speed of 550r/min, and reacting at 140 ℃ for 4h to obtain a modified base material;
s2, uniformly mixing modified epoxy resin and PVC resin, heating to 120 ℃, preserving heat for 30min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a promoter TMDT, zinc oxide, stearic acid and an anti-aging agent RD, uniformly mixing, stirring at a rotation speed of 950r/min for 1.5h, continuously heating to 85 ℃, preserving heat for 10min, adding a modified heat-resistant agent and vinyl triethoxysilane, uniformly mixing, stirring at a rotation speed of 3000r/min for 10min, and cooling to room temperature to obtain a modified material;
s3, heating the base material obtained in the step S1 to 120 ℃, preserving heat for 25min, adding the modified material obtained in the step S2, cooling to 75 ℃, preserving heat for 1.5h, stirring at the rotating speed of 750r/min for 1.5h, and cooling to room temperature to obtain the high-performance cable material for the charging pile.
Example 2
The high-performance cable material for the charging pile comprises the following raw materials in parts by weight: 40 parts of powdered nitrile butadiene rubber, 30 parts of modified epoxy resin, 4 parts of styrene butadiene rubber, 30 parts of PVC resin, 4 parts of ammonium polyphosphate, 9 parts of aluminum hydroxide, 5 parts of magnesium hydroxide, 5 parts of silicon-hydrogen-containing group, 4 parts of cellulose ether, 6 parts of carbon black N3309, 6 parts of glass fiber, 8 parts of sodium silicate, 5 parts of chlorinated paraffin, 3 parts of dimethyl silicone oil, 6 parts of expanded vermiculite, 25 parts of modified heat-resistant agent, 2 parts of vinyl triethoxysilane, 9 parts of accelerator TMDT, 4 parts of zinc oxide, 6 parts of stearic acid, 2 parts of anti-aging agent RD, 1878 parts of silane coupling agent A, and 3 parts of tetrabromobisphenol A.
The modified heat-resistant agent is prepared by the following process: uniformly mixing 15 parts of polymethyl methacrylate, 16 parts of polyvinylidene fluoride and 4 parts of benzoyl peroxide according to parts by weight, heating to 80 ℃, preserving heat for 20min, adding 6 parts of polypropylene, 2 parts of silane coupling agent KH-550, 5 parts of potassium persulfate and 4 parts of aluminum polyphosphate, uniformly mixing, stirring at the rotating speed of 850r/min for 10min, adjusting the pH value to 5.0, heating to 65 ℃, preserving heat for 1.5h, washing, drying at the temperature of 65 ℃ in vacuum to constant weight, cooling to room temperature, adding 6 parts of nano aluminum nitride, 2 parts of mica powder, 8 parts of nano aluminum hydroxide, 3 parts of antimony trioxide and 6 parts of zinc phenylphosphoric acid, uniformly mixing, stirring at the rotating speed of 80r/min for 20min, heating to 150 ℃, preserving heat for 20min, and cooling to room temperature to obtain the modified heat-resistant agent.
The modified epoxy resin is prepared by the following process: uniformly mixing 4 parts by weight of silane coupling agent KH-550 and 20 parts by weight of ethanol-water solution, standing for 0.5h, then adding 8 parts by weight of kapok and 6 parts by weight of fumed silica, uniformly mixing, and stirring at the rotating speed of 850r/min for 30min to obtain a material a; uniformly mixing 80 parts of AG-80 epoxy resin, 40 parts of nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 120 ℃, preserving heat for 4 hours, continuously stirring in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
The preparation method of the cable material for the high-performance charging pile comprises the following steps:
s1, uniformly mixing powdered nitrile rubber, styrene butadiene rubber and ammonium polyphosphate, heating to 120 ℃, preserving heat for 30min, stirring at a rotating speed of 1500r/min for 30min, cooling to room temperature to obtain a base material, adding a silane coupling agent A187 and tetrabromobisphenol A into the base material, magnetically stirring under the protection of nitrogen at a rotating speed of 450r/min, and reacting at 150 ℃ for 3h to obtain a modified base material;
s2, uniformly mixing modified epoxy resin and PVC resin, heating to 130 ℃, preserving heat for 20-40min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a promoter TMDT, zinc oxide, stearic acid and an anti-aging agent RD, uniformly mixing, stirring at a rotating speed of 850r/min for 2h, continuously heating to 80 ℃, preserving heat for 15min, adding a modified heat-resistant agent and vinyl triethoxysilane, uniformly mixing, stirring at a rotating speed of 2500r/min for 15min, and cooling to room temperature to obtain a modified material;
and S3, heating the base material obtained in the step S1 to 110 ℃, preserving heat for 30min, adding the modified material obtained in the step S2, cooling to 70 ℃, preserving heat for 2h, stirring at the rotating speed of 650r/min for 2h, and cooling to room temperature to obtain the high-performance cable material for the charging pile.
Example 3
The high-performance cable material for the charging pile comprises the following raw materials in parts by weight: 60 parts of powdered nitrile butadiene rubber, 10 parts of modified epoxy resin, 8 parts of styrene butadiene rubber, 20 parts of PVC resin, 8 parts of ammonium polyphosphate, 3 parts of aluminum hydroxide, 7 parts of magnesium hydroxide, 1 part of silicon-hydrogen-containing group, 10 parts of cellulose ether, 3 parts of carbon black N3303, 9 parts of glass fiber, 4 parts of sodium silicate, 10 parts of chlorinated paraffin, 1 part of dimethyl silicone oil, 10 parts of expanded vermiculite, 15 parts of modified heat-resistant agent, 5 parts of vinyl triethoxysilane, 8 parts of accelerating agent TMDT3, 8 parts of zinc oxide, 3 parts of stearic acid, 6 parts of anti-aging agent RD, 1874 parts of silane coupling agent A and 9 parts of tetrabromobisphenol A.
The modified epoxy resin is prepared by the following process: uniformly mixing 8 parts by weight of silane coupling agent KH-550 and 10 parts by weight of ethanol-water solution, standing for 1.5h, then adding 4 parts by weight of kapok and 9 parts by weight of fumed silica, uniformly mixing, and stirring at the rotating speed of 650r/min for 50min to obtain a material a; uniformly mixing 60 parts of AG-80 epoxy resin, 50 parts of nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 80 ℃, keeping the temperature for 6 hours, continuously stirring in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
The modified heat-resistant agent is prepared by the following process: uniformly mixing 25 parts by weight of polymethyl methacrylate, 8 parts by weight of polyvinylidene fluoride and 8 parts by weight of benzoyl peroxide, heating to 60 ℃, preserving heat for 40min, adding 3 parts by weight of polypropylene, 6 parts by weight of silane coupling agent KH-550, 1 part by weight of potassium persulfate and 8 parts by weight of aluminum polyphosphate, uniformly mixing, stirring at the rotating speed of 650r/min for 30min, adjusting the pH to 3.5, heating to 75 ℃, preserving heat for 0.5h, drying at the temperature of 75 ℃ in vacuum after washing to constant weight, cooling to room temperature, adding 3 parts by weight of nano aluminum nitride, 5 parts by weight of mica powder, 4 parts by weight of nano aluminum hydroxide, 9 parts by weight of antimony trioxide and 2 parts by weight of zinc phenylphosphonic acid, uniformly mixing at the rotating speed of 120r/min for 10min, heating to 160 ℃, preserving heat for 10min, and cooling to room temperature to obtain the modified heat-resistant.
The preparation method of the cable material for the high-performance charging pile comprises the following steps:
s1, uniformly mixing powdered nitrile butadiene rubber, styrene butadiene rubber and ammonium polyphosphate, heating to 130 ℃, preserving heat for 10min, stirring at the rotating speed of 2500r/min for 10min, cooling to room temperature to obtain a base material, adding a silane coupling agent A187 and tetrabromobisphenol A into the base material, magnetically stirring under the protection of nitrogen at the rotating speed of 650r/min, and reacting at 130 ℃ for 5h to obtain a modified base material;
s2, uniformly mixing modified epoxy resin and PVC resin, heating to 130 ℃, preserving heat for 20min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a promoter TMDT, zinc oxide, stearic acid and an anti-aging agent RD, uniformly mixing, stirring at a rotating speed of 1050r/min for 1h, then continuously heating to 90 ℃, preserving heat for 5min, adding a modified heat-resistant agent and vinyl triethoxysilane, uniformly mixing, stirring at a rotating speed of 3500r/min for 5min, and cooling to room temperature to obtain a modified material;
and S3, heating the base material obtained in the step S1 to 130 ℃, preserving heat for 20min, adding the modified material obtained in the step S2, cooling to 80 ℃, preserving heat for 1h, stirring at the rotating speed of 850r/min for 1h, and cooling to room temperature to obtain the high-performance cable material for the charging pile.
Comparative example 1
The preparation process is basically the same as that of example 1, except that modified epoxy resin, aluminum hydroxide, magnesium hydroxide, modified heat-resistant agent and vinyl triethoxysilane are absent in the raw materials for preparing the cable sheath of the high-performance cable material for charging piles.
Comparative example 2
The preparation process is basically the same as that of example 1, except that the modified epoxy resin is absent in the raw materials for preparing the cable sheath of the high-performance cable material for charging piles.
Comparative example 3
The procedure was substantially the same as in example 1, except that the raw material for preparing the cable sheath of the high-performance cable material for charging piles was deficient in aluminum hydroxide.
Comparative example 4
The procedure was substantially the same as in example 1, except that magnesium hydroxide was absent from the raw material for preparing the cable sheath of the high-performance cable material for charging piles.
Comparative example 5
The preparation process is basically the same as that of example 1, except that the modified heat-resistant agent is absent in the raw materials for preparing the cable sheath of the high-performance cable material for charging piles.
Comparative example 6
The procedure was substantially the same as in example 1, except that vinyltriethoxysilane was absent from the raw materials for preparing the cable sheath of the high-performance cable material for charging piles.
Comparative example 7
The cable material for the high-performance charging pile is prepared by adopting the method in specific example 1 in Chinese patent application document 'a cable material for a new energy automobile charging pile cable sheath and a preparation method thereof (publication number: CN 108102251A').
Comparative example 8
The preparation process is basically the same as that of example 1, except that the raw materials for preparing the cable sheath of the cable material for the high-performance charging pile comprise 14 parts of modified epoxy resin, 10 parts of aluminum hydroxide, 3 parts of magnesium hydroxide, 13 parts of modified heat-resistant agent and 0.8 part of vinyl triethoxysilane.
Comparative example 9
The preparation process is basically the same as that of example 1, except that the raw materials for preparing the cable sheath of the cable material for the high-performance charging pile comprise 26 parts of modified epoxy resin, 5 parts of aluminum hydroxide, 9 parts of magnesium hydroxide, 7 parts of modified heat-resistant agent and 0.9 part of vinyl triethoxysilane.
Comparative example 10
The preparation process is basically the same as that of example 1, except that the raw materials for preparing the cable sheath of the cable material for the high-performance charging pile comprise 27 parts of modified epoxy resin, 10 parts of aluminum hydroxide, 3 parts of magnesium hydroxide, 8 parts of modified heat-resistant agent and 5 parts of vinyl triethoxysilane.
The products obtained in examples 1 to 3 and comparative examples 1 to 10 were subjected to a heat resistance test, and the heat resistance was measured using UL1581 standard, and the results are shown in the following tables.
| Experimental project | Heat resistance (. degree.C.) |
| Example 1 | 284 |
| Example 2 | 263 |
| Example 3 | 268 |
| Comparative example 1 | 138 |
| Comparative example 2 | 249 |
| Comparative example 3 | 245 |
| Comparative example 4 | 251 |
| Comparative example 5 | 259 |
| Comparative example 6 | 253 |
| Comparative example 7 | 126 |
| Comparative example 8 | 162 |
| Comparative example 9 | 166 |
| Comparative example 10 | 156 |
From the above table, it can be seen that:
(1) as can be seen from the data of examples 1 to 3 and comparative example 7, the heat resistance of the cable material for the high-performance charging pile prepared in examples 1 to 3 is significantly higher than that of the cable material prepared in comparative example 7; meanwhile, as can be seen from the data of examples 1 to 3, example 1 is the most preferred example.
(2) As can be seen from the data of example 1 and comparative examples 1 to 6, the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyltriethoxysilane play a synergistic role in preparing the cable material protective sleeve for the high-performance charging pile, and the heat resistance of the cable material for the high-performance charging pile is synergistically improved; this is:
the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyl triethoxysilane are used as a reinforcing system, the modified epoxy resin is used as base rubber, the aluminum hydroxide and the magnesium hydroxide are used as heat-resistant fillers, the surface of the aluminum hydroxide and the magnesium hydroxide contains a large amount of hydroxyl groups, the hydroxyl groups can be connected and combined with unsaturated bonds on the surface of the modified epoxy resin under the action of the vinyl triethoxysilane, when a single modified epoxy resin is heated or burnt, the outer surface of the single modified epoxy resin is directly contacted with a heat source, so that the self temperature of the modified epoxy resin is too high, good heat insulation and heat dispersion effects cannot be achieved, after the aluminum hydroxide and the magnesium hydroxide are connected on the surface, the volume of the modified epoxy resin is increased, on the other hand, the aluminum hydroxide and the magnesium hydroxide can absorb heat, and the modified epoxy, the modified epoxy resin has the advantages that a good heat insulation effect is achieved, on the other hand, oxygen can be consumed when the aluminum hydroxide and the magnesium hydroxide are heated and combusted, the surface of the modified epoxy resin is in an oxygen-free state, and accordingly the flame retardant effect is achieved, the aluminum hydroxide and the magnesium hydroxide are connected to the surface of the modified epoxy resin in a large amount, and a large amount of oxygen on the surface of the SEBS can be consumed, so that the flame retardant effect is further improved. The performance of aluminum hydroxide and magnesium hydroxide as heat-resistant fillers is utilized to realize the reinforcement of the heat-resistant performance of the modified epoxy resin. And the addition of the modified heat-resistant agent realizes the connection of hydroxyl on the surface of the modified heat-resistant agent and unsaturated bonds of the modified epoxy resin under the action of the vinyltriethoxysilane, and effectively realizes the reinforcement effect on the heat resistance of the modified epoxy resin.
The added modified heat-resistant agent takes polymethyl methacrylate, polyvinylidene fluoride and polypropylene as heat-resistant base resin, aluminum polyphosphate, nano aluminum nitride, mica powder, nano aluminum hydroxide, antimony trioxide and zinc phenylphosphoric acid are taken as heat-resistant reinforcing fillers, potassium persulfate and benzoyl peroxide are taken as initiators, a silane coupling agent KH-550 is taken as a connecting substance between the heat-resistant reinforcing filler and the base resin, the bond energy of active bonds on the surface of the heat-resistant reinforcing filler is improved through the catalytic action of the initiator, the heat-resistant reinforcing filler can be connected and wrapped on the surface of the base resin, the heat-resistant reinforcement of the base resin is realized by utilizing the high heat resistance of the heat-resistant reinforcing filler, and the hydroxyl on the surface of the heat-resistant reinforcing filler is connected with the unsaturated bond on the surface of the modified epoxy resin under the action of the vinyl triethoxysilane, so that the heat-resistant performance of the modified epoxy resin is reinforced by the modified heat-resistant agent.
The added modified epoxy resin is prepared by uniformly mixing a silane coupling agent KH-550 and an ethanol-water solution, standing, adding kapok and gas-phase silica, uniformly mixing, and stirring to obtain a material a; AG-80 epoxy resin, nano fully-vulcanized carboxyl nitrile rubber and a material a are mixed to obtain modified epoxy resin, the AG-80 epoxy resin is used as a base material, the kapok and fumed silica are modified by a silane coupling agent KH-550, the surfaces of the kapok and the fumed silica contain a plurality of hydroxyl groups, the silane coupling agent KH-550 belongs to a long-chain high-molecular material, the long chain of the silane coupling agent KH-550 can be bent according to the shape structure of a wrapping material, unsaturated bonds on the surface of the silane coupling agent KH-550 are respectively connected with the hydroxyl groups on the surfaces of the kapok and the fumed silica, the silane coupling agent KH-550 is wrapped on the outer surfaces of the kapok and the fumed silica respectively, on one hand, the surface area and the volume of the kapok and the fumed silica are increased, and the kapok and the fumed silica are not easy to agglomerate with a solvent during mixing, the ceiba and the fumed silica wrapped by the silane coupling agent KH-550 can be connected with the AG-80 epoxy resin unsaturated bond by utilizing the hydroxyl on the surface of the silane coupling agent KH-550, so that the ceiba and the fumed silica are attached to the periphery of the AG-80 epoxy resin, the AG-80 epoxy resin wrapped by the ceiba and the fumed silica is increased in surface area, when the AG-80 epoxy resin is subjected to external force, on one hand, the high mechanical property of the ceiba and the fumed silica is utilized to realize buffering, on the other hand, the wrapping of the ceiba and the fumed silica realizes the increase of the surface area, partial extrusion force is dispersed, the surface energy of the modified AG-80 epoxy resin is also increased, the impact resistance is further improved, and due to the connection effect of the silane coupling agent KH-550, the compatibility of the modified AG-80 epoxy resin and an epoxy resin encapsulating material system is improved, is not easy to settle out. The added nano fully vulcanized carboxyl nitrile rubber has a tough group, the epoxy resin realizes the reaction of carboxyl in the nano fully vulcanized carboxyl nitrile rubber and epoxy group in the epoxy resin under the catalysis of a silane coupling agent KH-550, so that rubber blocks are in a cross-linked structure of the epoxy resin to obtain good mechanical property and heat resistance, kapok, fumed silica and the nano fully vulcanized carboxyl nitrile rubber are matched as a performance reinforcing material, the surface energy of the epoxy resin is improved on the premise of increasing the surface area of the epoxy resin by utilizing the combination of the hydroxyl on the surfaces of the kapok and the fumed silica and unsaturated bonds of the epoxy resin through the connection effect of the silane coupling agent KH-550, and the epoxy resin has excellent shock resistance due to the self high mechanical strength of the kapok and the fumed silica, and has good high temperature resistance and low temperature resistance, thereby ensuring that the modified epoxy resin has excellent high temperature resistance and low temperature resistance on the premise of excellent shock resistance.
(3) As can be seen from the data of comparative examples 8 to 10, the weight ratio of the modified epoxy resin, aluminum hydroxide, magnesium hydroxide, modified heat-resistant agent, vinyltriethoxysilane is not (15 to 25): (6-9): (4-8): (9-12): (1-3), the heat resistance values of the cable materials obtained were very different from those of examples 1-3, much smaller than those of examples 1-3, and not much different from those of the prior art (comparative example 7). In the embodiments 1 to 3 of the present invention, when preparing a high-performance cable material for a charging pile, the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyltriethoxysilane is controlled to (15 to 25): (6-9): (4-8): (9-12): (1-3), the modified epoxy resin is taken as the main raw material of a reinforcing system, aluminum hydroxide, magnesium hydroxide and a modified heat-resistant agent are taken as heat-resistant reinforcing fillers, vinyl triethoxysilane is used as a connecting agent of the filler and the base resin, so that the heat-resistant reinforcing filler is wrapped on the periphery of the base resin, the heat resistance of aluminum hydroxide, magnesium hydroxide and the modified heat-resistant agent is fully utilized, the heat-resistant reinforcing modification of the modified epoxy resin is realized by using a small amount of aluminum hydroxide, magnesium hydroxide, a modified heat-resistant agent and vinyl triethoxysilane, and a large amount of hydroxyl of a reinforcing system is combined with unsaturated bonds on the surface of the base material for preparing the cable material, so that the performances of the modified epoxy resin, aluminum hydroxide, magnesium hydroxide, a modified heat-resistant agent and vinyl triethoxysilane as a heat-resistant reinforcing system are fully utilized, and the heat-resistant performance of the cable material can be reinforced.
(4) According to the invention, in the process of preparing the base material, the silane coupling agent A187 and the tetrabromobisphenol A are added, the silane coupling agent A187 can realize the unsaturated bond connection of the hydroxyl on the surface of the base material and the surface of the tetrabromobisphenol A, and the hydroxyl on the silane coupling agent A187 is also in unsaturated connection with the surface of the base material, so that the tetrabromobisphenol A is indirectly connected on the base material, the coating of the agent material is realized, and the heat resistance and the reinforcement effect of the heat resistance of the tetrabromobisphenol A on the base material are utilized, so that the heat resistance of the prepared cable material is further improved.
The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.
Claims (6)
1. The high-performance cable material for the charging pile is characterized by comprising the following raw materials: the material comprises the following raw materials of powdered nitrile butadiene rubber, modified epoxy resin, styrene butadiene rubber, PVC resin, ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing groups, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, a modified heat-resistant agent, vinyl triethoxysilane, a promoter TMDT, zinc oxide, stearic acid, an anti-aging agent RD, a silane coupling agent A187 and tetrabromobisphenol A;
the modified epoxy resin comprises the following raw materials in parts by weight: 4-8 parts of silane coupling agent KH-550, 10-20 parts of ethanol-water solution, 4-8 parts of kapok, 6-9 parts of fumed silica, 60-80 parts of AG-80 epoxy resin and 40-50 parts of nano fully-vulcanized carboxyl nitrile rubber;
the modified heat-resistant agent comprises the following raw materials in parts by weight: 15-25 parts of polymethyl methacrylate, 8-16 parts of polyvinylidene fluoride, 4-8 parts of benzoyl peroxide, 3-6 parts of polypropylene, 2-6 parts of silane coupling agent KH-5502, 1-5 parts of potassium persulfate, 4-8 parts of aluminum polyphosphate, 3-6 parts of nano aluminum nitride, 2-5 parts of mica powder, 4-8 parts of nano aluminum hydroxide, 3-9 parts of antimony trioxide and 2-6 parts of zinc phenylphosphoric acid;
the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyl triethoxysilane is (10-30): (3-9): (5-7): (15-25): (2-5).
2. The high-performance cable material for charging piles as claimed in claim 1, wherein the weight ratio of the modified epoxy resin, the aluminum hydroxide, the magnesium hydroxide, the modified heat-resistant agent and the vinyltriethoxysilane is 20.4: 6.2: 5.8: 19.8: 3.6.
3. the high-performance cable material for the charging pile according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 40-60 parts of powdered nitrile butadiene rubber, 10-30 parts of modified epoxy resin, 4-8 parts of styrene butadiene rubber, 20-30 parts of PVC resin, 4-8 parts of ammonium polyphosphate, 3-9 parts of aluminum hydroxide, 5-7 parts of magnesium hydroxide, 1-5 parts of silicon-hydrogen-containing group, 4-10 parts of cellulose ether, 3-9 parts of carbon black N3303, 6-9 parts of glass fiber and 4-8 parts of sodium silicate, 5-10 parts of chlorinated paraffin, 1-3 parts of dimethyl silicone oil, 6-10 parts of expanded vermiculite, 15-25 parts of modified heat-resistant agent, 2-5 parts of vinyl triethoxysilane, 3-9 parts of accelerator TMDT, 4-8 parts of zinc oxide, 3-6 parts of stearic acid, 2-6 parts of anti-aging agent RD, 4-8 parts of silane coupling agent A1874 and 3-9 parts of tetrabromobisphenol A.
4. The high-performance cable material for charging piles as claimed in claim 1, wherein the modified heat-resistant agent is prepared by the following process: uniformly mixing polymethyl methacrylate, polyvinylidene fluoride and benzoyl peroxide, heating to 60-80 ℃, keeping the temperature for 20-40min, adding polypropylene, silane coupling agent KH-550, potassium persulfate and aluminum polyphosphate, uniformly mixing, stirring at the rotation speed of 650 plus one year 850r/min for 10-30min, adjusting the pH value to 3.5-5.0, heating to 65-75 ℃, keeping the temperature for 0.5-1.5h, washing, drying at the temperature of 65-75 ℃ in vacuum to constant weight, cooling to room temperature, adding nano aluminum nitride, mica powder, nano aluminum hydroxide, antimony trioxide and zinc phenylphosphoric acid, uniformly mixing, stirring at the rotation speed of 80-120r/min for 10-20min, heating to 150 plus one year 160 ℃, keeping the temperature for 10-20min, and cooling to room temperature to obtain the modified heat-resistant agent.
5. The high-performance cable material for the charging pile according to claim 1, wherein the modified epoxy resin is prepared by the following process: uniformly mixing a silane coupling agent KH-550 and an ethanol-water solution, standing for 0.5-1.5h, then adding kapok and gas-phase silica, uniformly mixing, and stirring at the rotating speed of 650-; uniformly mixing AG-80 epoxy resin, nano fully-vulcanized carboxyl nitrile rubber and the material a, heating to 80-120 ℃, preserving heat for 4-6h, stirring continuously in the heat preservation process, and cooling to room temperature to obtain the modified epoxy resin.
6. The preparation method of the cable material for the high-performance charging pile according to any one of claims 1 to 5, characterized by comprising the following steps:
s1, uniformly mixing the powdered nitrile rubber, the styrene butadiene rubber and the ammonium polyphosphate, heating to 120-;
s2, uniformly mixing the modified epoxy resin and the PVC resin, heating to 110-130 ℃, preserving heat for 20-40min, adding aluminum hydroxide, magnesium hydroxide, silicon-hydrogen-containing group, cellulose ether, carbon black N330, glass fiber, sodium silicate, chlorinated paraffin, dimethyl silicone oil, expanded vermiculite, accelerant TMDT, zinc oxide, stearic acid and anti-aging agent RD, uniformly mixing, stirring at the rotating speed of 850-1050r/min for 1-2h, continuously heating to 80-90 ℃, preserving heat for 5-15min, adding the modified heat-resistant agent and vinyltriethoxysilane, uniformly mixing, stirring at the rotating speed of 2500-3500r/min for 5-15min, and cooling to room temperature to obtain a modified material;
s3, heating the base material obtained in the step S1 to 110-.
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