High-temperature-resistant flame-retardant enameled round copper wire and preparation method thereof

Abstract

The invention discloses a high-temperature-resistant flame-retardant enameled round copper wire and a preparation method thereof. The high-temperature-resistant flame-retardant enameled round copper wire comprises a copper wire core and a reinforcing layer, insulating paint is arranged on the outer surfaces of the copper wire cores, and every two adjacent copper wire cores are spirally wound; the reinforcing layer is arranged outside the whole formed by the insulating paint, a rock wool fiber heat insulation layer is arranged on the outer surface of the reinforcing layer, a thermosetting polyamide resin flame-retardant layer is arranged on the outer surface of the rock wool fiber heat insulation layer, the reinforcing layer comprises an inner wrapping layer, heat insulation rubber and an outer wrapping layer, the inner wrapping layer is spirally wound outside the whole formed by the insulating paint, and the heat insulation rubber is wound outside the outer wrapping layer. The outer surface of the inner wrapping layer is spirally wound with heat insulation rubber, the outer surface of the heat insulation rubber is provided with an outer wrapping layer, the outer surface of the outer wrapping layer is provided with a thermosetting polyamide resin flame-retardant layer, the inner wrapping layer is an insulation paper inner wrapping layer, and the outer wrapping layer is a high-temperature-resistant boron modified phenolic resin outer wrapping layer. The flame-retardant and high-temperature-resistant performance of the enameled round copper wire is improved, and the safety performance is improved.

Description

technical field [0001] The invention relates to the technical field of electric wires and cables, in particular to a high temperature resistant flame retardant enameled round copper wire and a preparation method thereof. Background technique [0002] Enameled wire is a main variety of winding wire. It consists of conductor and insulating layer. After the bare wire is softened by annealing, it is painted and baked many times. The product is not easy. It is affected by the quality of raw materials, process parameters, production equipment, environment and other factors. Therefore, the quality characteristics of various enameled wires are different. With the rapid development of my country's electrical and mechanical industries, the concept of mechatronics has long been Deeply rooted in the hearts of the people, the development of the electrical industry is inseparable from the development of enameled wires. Enameled round copper wire is often used in motors, electrical applianc...

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Problems solved by technology

Enamelled copper round wire is often used in motors, electrical appliances, instruments, transformers and other fields. With the continuous expansion of application fields, higher requirements are put forward for enamelled copper round wire, which requires enameled copper round wire to have a certain mechanical strength. , strong wear resistance, scratch resistance and good lubricity, but the working environment of enamelled copper round wire is sometimes in a high temperature state, such as coal mine motors, aviation instruments and other electrical appliances, in this environment The high-temperature loss of the work is relatively large. In order to pursue the performance of the enameled wire, it is often simply coated with multiple layers of paint with different functions. As everyone knows, the more layers of paint on the enameled wire, the greater the possibility of peeling off the paint. Enameled copper round The tensile strength of the wire is very low, and the existing ordinary enameled wire usually has a single layer of flame retardant and heat insulation, so that it does not have good characteristics of flame retardant and heat insulation, and the flame retardant, high temperature resistance and mechanical strength cannot be better. At the same time, the safety performance cannot be well guaranteed and cannot meet the requirements of consumers. Therefore, we propose a high-temperature-resistant and flame-retardant enamelled round copper wire and its preparation method

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