Halogen-free low-smoke flame-retardant wire and cable and preparation method thereof

Abstract

The invention relates to a halogen-free low-smoke flame-retardant electric wire and cable and a preparation method thereof, the halogen-free low-smoke flame-retardant electric wire and cable comprises a copper conductor and an insulating layer coating the copper conductor, and the insulating layer comprises the following components in parts by weight: 100-120 parts of polytetrafluoroethylene; 30 to 40 parts of 2-(4-methoxyphenyl) malonaldehyde; 5-6 parts of silicon resin; 12 to 15 parts of aluminum hydroxide; 8-10 parts of ricinoleic acid; 5 to 6 parts of p-nitrobenzaldehyde; and 1-2 parts of a catalyst. The preparation method of the halogen-free low-smoke flame-retardant electric wire and cable comprises preparation of an electric wire and cable material of an insulating layer and a cabling process. The halogen-free low-smoke flame-retardant electric wire and cable has the following advantages and effects: 2-(4-methoxyphenyl) malonaldehyde is easy to combine with polytetrafluoroethylene, and has a good flame retardant effect; the aluminum hydroxide reduces conduction heat resistance and is not easy to ignite; and in the presence of a catalyst, the aluminum hydroxide is modified by a product obtained by mixing the ricinoleic acid and the p-nitrobenzaldehyde, so that a good bonding interface is formed to form a continuous closed structure, and the flame retardant property is improved.

Description

technical field [0001] The present application relates to the technical field of wires and cables, in particular to a halogen-free, low-smoke, flame-retardant wire and cable and a preparation method thereof. Background technique [0002] Wire and cable refer to the wires that transmit electric energy. The existing electromagnetic wires are insulated wires that generate a magnetic field or induce current in a magnetic field after being energized. It is mainly used for motor and transformer windings and other related electromagnetic equipment. Its conductors are mainly copper. The wire should have a thin insulating layer and good electrical and mechanical properties, as well as heat resistance, moisture resistance, solvent resistance and other properties. [0003] The existing Chinese patent with publication number CN111145943A discloses a wire and cable for sensors, including a cable core and a cable outer layer. There are several cable cores in the cable outer layer, and eac...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, in the current use of wires and cables, when the ambient temperature rises, the average activation energy of oxygen molecules increases, which is easy to enhance the efficiency of combining with the organic materials of wires and cables, and at the same time promotes more in the wires and cables. The cracking and gasification of organic materials in a unit time; therefore, some current wires and cables tend to have a significant drop in oxygen index and lower flame retardancy when the ambient temperature rises, so the inventor believes that there is still room for improvement