Cable material composition for automobile wire harness and preparation method thereof

A technology for cable materials and automotive wires, which is applied in the field of cable material compositions for automotive wiring harnesses and its preparation, and can solve the problems of loss of polymer mechanical properties, complicated preparation methods of organophosphorus nitrogen flame retardants, reduction of polymer toughness, and tensile strength Intensity and other issues to achieve the effect of improving flame retardant performance

Inactive Publication Date: 2022-05-10
南通华海电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic flame retardants can significantly improve the flame retardant effect of polymers, and can improve the strength or wear resistance of polymers to a certain extent, and the preparation method is relatively simple and widely used. However, it also has some unavoidable shortcomings: for example The addition of a large amount of inorganic flame retardants will reduce the toughness and tensile strength of the polymer, thereby causing the loss of the mechanical properties of the polymer; in addition, the inorganic flame retardants a

Method used

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  • Cable material composition for automobile wire harness and preparation method thereof
  • Cable material composition for automobile wire harness and preparation method thereof

Examples

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preparation example Construction

[0095] The present invention also provides a preparation method of the cable material composition for the automobile wire harness, comprising the following steps:

[0096] S1. In parts by weight, put EPDM rubber, ethylene-vinyl acetate copolymer, silicon-aluminum composite inorganic flame retardant, antioxidant, and plasticizer into the mixer, heat to 90-120°C, and stir for 5 -20 minutes, cooled to room temperature to obtain the mixture;

[0097] S2. Put the mixture obtained in step S1 into a twin-screw extruder, and carry out plasticizing and granulation at 120-180° C. and a rotating speed of 200-500 r / min to obtain the cable material composition for automobile wiring harness.

Embodiment 1

[0100] A cable material composition for automotive wiring harnesses in this embodiment is prepared from the following raw materials in parts by weight:

[0101] 40 parts by weight of EPDM rubber;

[0102] 70 parts by weight of ethylene-vinyl acetate copolymer;

[0103] 120 parts by weight of silicon-aluminum composite inorganic flame retardant;

[0104] Antioxidant 0.8 parts by weight;

[0105] 3 parts by weight of plasticizer;

[0106] 2 parts by weight of coupling agent;

[0107] Wherein, the silicon-aluminum composite inorganic flame retardant is prepared by the following method:

[0108] 1) Preparation of modified carbon nanotubes:

[0109] The carbon nanotubes are soaked in hydrofluoric acid for 12 hours, washed and dried, placed in the mixed acid of nitric acid and sulfuric acid, boiled for 2 hours, the carbon nanotubes are taken out, cleaned and dried to obtain the modified carbon nanotubes.

[0110] Wherein, the carbon nanotubes are commercially available multi-a...

Embodiment 2

[0131] The difference between this example and Example 1 lies in the proportion of each raw material in the cable material composition for automobile wiring harnesses, and only the differences are listed below.

[0132] A cable material composition for automobile wiring harness provided in this embodiment is prepared from the following raw materials in parts by weight:

[0133] 50 parts by weight of EPDM rubber;

[0134] 75 parts by weight of ethylene-vinyl acetate copolymer;

[0135] 130 parts by weight of silicon-aluminum composite inorganic flame retardant;

[0136] 1 part by weight of antioxidant;

[0137] Plasticizer 4 parts by weight;

[0138] 3 parts by weight of coupling agent.

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Abstract

The invention discloses a cable material composition for an automobile wire harness and a preparation method of the cable material composition. The cable material composition is prepared from the following raw materials in parts by weight: 30-80 parts of ethylene propylene diene monomer; 60 to 120 parts of an ethylene-vinyl acetate copolymer; 70 to 160 parts of a silicon-aluminum compound inorganic flame retardant; 0.4 to 3 parts of an antioxidant; 2-10 parts of a plasticizer; and 0.5-5 parts of a coupling agent. According to the invention, the carbon nano tube is used as a carrier to load part of the silicon dioxide microspheres, and can be connected with part of the silicon dioxide microspheres in a surface bonding manner to form a carbon nano tube-silicon dioxide composite carrier, and through the synergistic enhancement effect of the carbon nano tube and the silicon dioxide microspheres, the loading capacity can be increased, and the dispersion performance can be improved; the carbon nanotubes, the silicon dioxide microspheres and the Al (OH) 3/Al2O3 are complementarily enhanced, so that the mechanical properties such as toughness and tensile strength of the polymer can be improved while the flame retardant property of the polymer is improved.

Description

technical field [0001] The invention relates to the field of automobile wire harnesses, in particular to a cable material composition for automobile wire harnesses and a preparation method thereof. Background technique [0002] Since halogen-containing cable materials will release a large amount of toxic gases when burned, it will endanger human health, which is not conducive to vehicle fire escape and environmental protection requirements. Therefore, the current halogen-free flame-retardant cable materials for automotive wiring harnesses are increasingly used. In order to improve the flame retardant performance, it is usually necessary to add a large amount of inorganic flame retardants (such as aluminum hydroxide / aluminum oxide, magnesium hydroxide, etc.) or organic phosphorus nitrogen flame retardants to the halogen-free flame retardant cable compound. Inorganic flame retardants can significantly improve the flame retardant effect of polymers, and can improve the strength...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/16C08K9/12C08K9/10C08K9/06C08K7/18C08K9/02C08K3/04H01B3/44
CPCC08L23/0853H01B3/441C08L2201/02C08L2203/202C08K2201/011C08K2003/2227C08L23/16C08K9/12C08K9/10C08K9/06C08K7/18C08K9/02C08K3/041C08K3/22
Inventor 黄海俊苏建飞刘晶晶薛凯周莉莉
Owner 南通华海电气有限公司
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