Cable material composition for automobile wire harness and preparation method thereof

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...

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 are also easy to agglomerate and difficult to fully and uniformly disperse in the polymer. Disadvantages, resulting in its inability to fully exert the effect of improving the flame retardant performance

It does not improve the inorganic flame retardant itself, but uses the addition of self-made organophosphorus nitrogen flame retardants to compensate for the loss of mechanical properties caused by the addition of inorganic flame retardants, and the organophosphorus nitrogen flame retardants it uses Fuel preparation method is more complex

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