High-temperature-resistant enameled wire prepared by 3D printing and preparation method thereof

Abstract

The invention relates to a high-temperature-resistant enameled wire prepared by 3D printing and a preparation method thereof, and belongs to the technical field of enamelled wires. The method is characterized in that conductive object powder is prepared into slurry or commercial conductive slurry is directly printed into a conductive inner core in a 3D printing mode, a high-temperature insulatingmaterial is prepared into thick slurry and then a high-temperature insulating material outer layer is obtained in the 3D printing mode; the conductive slurry or the powder is one or several kinds of graphene, graphite powder, carbon paste, conductive metal or modified ceramic; and the high-temperature-resistant insulating material is high-temperature-resistant insulating polyimide. The enameled wire prepared by the preparation method disclosed by the invention is excellent in mechanical property, chemical property, electrical property and thermal property; and the preparation method greatly simplifies the manufacturing process, the path can be designed, and the size can be customized, quick manufacturing is realized, and the method is particularly suitable for preparation of a small-diameter and micron-sized diameter enameled wire in batches, and provides a brand-new method for preparing the enameled wire.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant enamelled wire and additive manufacturing, and in particular relates to a high-temperature-resistant enameled wire prepared by 3D printing and a preparation method. Background technique [0002] Enameled wire, also known as magnet wire, is composed of conductor and insulating layer. After the bare wire is annealed and softened, it is painted and baked many times. As an electrical material, it is used in various fields. However, the existing enameled wire and its preparation method have the following disadvantages: the first is that there are many manufacturing processes, such as the publication number: CN 105655058A "a kind of enameled wire production process", which needs to include the following steps: firstly carry out multiple large stretching of the copper material, The diameter is 6 times of the final wire diameter, and then stretched several times to the final diameter o...

AI Technical Summary

Problems solved by technology

Because the enameled wire conductor and the insulating layer cannot be formed at one time, the firmness of the insulating layer on the conductor is affected, so the high temperature resistance, reliable insulation stability, and flexibility of the enameled wire are difficult to meet high standards.

The third is that the traditional wire enamel is solvent-based and adopts a heat-curing process. During use, a large amount of organic solvents volatilize into the air, causing environmental pollution, and consume a large amount of heat energy. The operating environment is harsh

Fourth, the existing enameled wire and its preparation method can only adapt to the large and small specifications and mass production of enameled wire, but with the development of microelectronics, industrial high-temperature conduction, chemical industry, aerospace and other technologies, new electronic devices are emerging in an endless stream. It is required that the various performances of enameled wires are getting higher and higher, and there are more and more varieties and specifications of enameled wires, but the demand for each variety and specification is very small; in addition, enameled wires are required to be thinner and thinner.

Facing the above-mentioned development situation, the enameled wire and its preparation method of the prior art have been unable to adapt

3D printing technology is an emerging rapid prototyping technology. Although many technical solutions have been invented in many forming and manufacturing fields, it is still blank in the field of enameled wire manufacturing.

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