CN-121991493-A - New energy automobile charges and uses cable

Abstract

The invention relates to the technical field of cables, in particular to a new energy automobile charging cable, an outer sheath of which is prepared from, by weight, 60-80 parts of polyether TPU, 10-20 parts of unsaturated polyester TPU, 10-15 parts of polyolefin elastomer, 3-5 parts of POE-g-MAH, 1-3 parts of norbornene cross-linking agent, 0.01-0.1 part of free radical initiator, 20-30 parts of carbon black, 5-10 parts of modified carbon nano tube, 10-15 parts of flame retardant, 1-2 parts of calcium stearate, 0.5-1 part of silane coupling agent and 0.5-1.5 parts of antioxidant.

Inventors

• YANG QIFENG
• HU XIANGHUA
• LI HUABIN
• PENG HONGZHI
• GAO SHUAI
• YI ZHIMIN

Assignees

• 湖南华菱线缆股份有限公司

Dates

Publication Date

20260508

Application Date

20260319

Claims (10)

1. 1. The novel energy automobile charging cable is characterized by comprising an outer sheath, wherein the novel energy automobile charging cable is prepared from the following raw materials in parts by weight: 60-80 parts of polyether TPU, 10-20 parts of unsaturated polyester TPU, 10-15 parts of polyolefin elastomer, 3-5 parts of POE-g-MAH, 1-3 parts of norbornene cross-linking agent, 0.01-0.1 part of free radical initiator, 20-30 parts of carbon black, 5-10 parts of modified carbon nano tube, 10-15 parts of flame retardant, 1-2 parts of calcium stearate, 0.5-1 part of silane coupling agent and 0.5-1.5 parts of antioxidant.
2. 2. The new energy automobile charging cable according to claim 1, wherein the unsaturated polyester TPU is prepared from a diol, a dibasic anhydride and a diisocyanate.
3. 3. The new energy automobile charging cable according to claim 2, wherein the dibasic acid anhydride is composed of a saturated acid anhydride and an unsaturated acid anhydride.
4. 4. The new energy automobile charging cable according to claim 3, wherein the unsaturated polyester TPU is prepared by the following method: the saturated anhydride, the unsaturated anhydride and the dihydric alcohol react firstly to obtain hydroxyl-terminated unsaturated polyester, and the hydroxyl-terminated unsaturated polyester reacts with diisocyanate.
5. 5. The new energy automobile charging cable according to claim 1, wherein the norbornene-type crosslinking agent has the structure as follows: Wherein L is an arylene group.
6. 6. The new energy automobile charging cable according to claim 5, wherein L has the following structural formula: Wherein is the site of attachment.
7. 7. The cable for charging a new energy automobile according to claim 1, wherein the modified carbon nanotube is obtained by modifying carboxylated carbon nanotubes with amino silicone oil and glycidyl methacrylate.
8. 8. The new energy automobile charging cable according to claim 1, wherein the flame retardant is composed of melamine polyphosphate and aluminum hypophosphite.
9. 9. The new energy vehicle charging cable according to any one of claims 1 to 8, further comprising a plurality of cable cores, and a mica tape wrapping layer that binds and fixes the plurality of cable cores, wherein the outer sheath wraps the outside of the mica tape wrapping layer.
10. 10. The new energy automobile charging cable according to claim 1, wherein an inorganic filler material is filled between the cable core and the mica tape wrapping layer.

Description

New energy automobile charges and uses cable Technical Field The invention relates to the technical field of cables, in particular to a new energy automobile charging cable. Background Compared with the traditional automobile, the new energy electric automobile is restricted by the charging time and the safety, so that the development and development process of the charging cable influences the running efficiency of the electric automobile to a certain extent. Because the charging cable is often subjected to floor drag, the cable must have good resistance to pulling, torsion and abrasion. In addition, considering charging safety and fire resistance, it must also be able to resist heat and flame, have good insulating properties, and how to improve the above-mentioned related properties of the cable is the focus of current research. Disclosure of Invention Aiming at the technical problems, the invention provides a new energy automobile charging cable. The technical scheme adopted is as follows: The new energy automobile charging cable comprises an outer sheath, wherein the cable is prepared from the following raw materials in parts by weight: 60-80 parts of polyether TPU, 10-20 parts of unsaturated polyester TPU, 10-15 parts of polyolefin elastomer, 3-5 parts of POE-g-MAH, 1-3 parts of norbornene cross-linking agent, 0.01-0.1 part of free radical initiator, 20-30 parts of carbon black, 5-10 parts of modified carbon nano tube, 10-15 parts of flame retardant, 1-2 parts of calcium stearate, 0.5-1 part of silane coupling agent and 0.5-1.5 parts of antioxidant. Further, the unsaturated polyester type TPU is prepared from dihydric alcohol, dibasic anhydride and diisocyanate. Further, the dibasic acid anhydride is composed of a saturated acid anhydride and an unsaturated acid anhydride. Still further, the saturated anhydride is phthalic anhydride and the unsaturated anhydride is maleic anhydride. Further, the preparation method of the unsaturated polyester TPU comprises the following steps: the saturated anhydride, the unsaturated anhydride and the dihydric alcohol react firstly to obtain hydroxyl-terminated unsaturated polyester, and the hydroxyl-terminated unsaturated polyester reacts with diisocyanate. Further, the norbornene-type crosslinking agent has the structure shown below: Wherein L is an arylene group. Further, the structural formula of L is as follows: Wherein is the site of attachment. Further, the norbornene-type crosslinking agent has the structure shown below: Further, the modified carbon nanotube is obtained by modifying carboxylated carbon nanotubes by amino silicone oil and glycidyl methacrylate. Still further, the aminosilicone is an aminopropyl terminated polydimethylsiloxane. When the modified carbon nano tube is prepared, one end of amino group of the amino silicone oil is connected with the surface carboxyl of the carbon nano tube through a chemical bond, and the other end of amino group is connected with the epoxy group of glycidyl methacrylate through a ring opening reaction. The low surface energy of the modified carbon nanotube surface grafted silicone oil chain segment can reduce the surface energy of the carbon nanotube and inhibit agglomeration of the carbon nanotube, meanwhile, the compatibility of the silicone oil and the TPU matrix can promote uniform dispersion of the carbon nanotube in the resin matrix, and the methacrylic acid chain segment can participate in free radical polymerization, so that the interfacial bonding strength of the carbon nanotube and the resin matrix is obviously enhanced. In addition, the high thermal conductivity of the carbon nano tube can rapidly disperse heat generated by combustion and inhibit local overheating. The one-dimensional structure of the carbon nano tube can form a continuous carbon layer to prevent oxygen from contacting with combustible matters, silicon oil can form silicon dioxide when in combustion, the silicon oil covers a combustion interface to inhibit smoke generation and reduce the release of combustible gases when in combustion, and the carbon layer of the carbon nano tube is formed to cooperate with the smoke inhibition effect of the silicon oil to further reduce the combustion rate and the smoke density. Further, the flame retardant is composed of melamine polyphosphate and aluminum hypophosphite. The mass ratio of the melamine polyphosphate to the aluminum hypophosphite is 1-4:1-4. Aluminum hypophosphite is used as an inorganic phosphorus flame retardant and is decomposed at high temperature to generate phosphoric acid compounds which can react with urethane bonds in TPU to promote the TPU to be decomposed into a carbon layer, so that flame spread is prevented. The melamine polyphosphate is used as an intumescent flame retardant, and the melamine and the polyphosphate contained in the intumescent flame retardant undergo an expansion reaction at high temperature to form a foam carbon layer, and the carbon layer has the characteris