Views: 0 Author: Site Editor Publish Time: 2022-10-07 Origin: Site
Polyvinyl acetal enameled flat wire has excellent high temperature hydrolysis resistance and is widely used in oil-immersed transformers. This feature has been notarized by countries all over the world, especially polyvinyl acetal enameled flat wire is used to make transposition wires, which are widely used in large transformer.
What information is there about polyvinyl acetal enameled flat wire?
What are the production requirements for polyvinyl acetal enameled flat wire?
What are the classifications of polyvinyl acetal enameled flat wire?
1. The main component of the outer surface of polyvinyl acetal enameled flat wire is polyvinyl formal, which is used for the production of enameled wire for oil-containing transformers.
2. The main component of polyurethane paint is polyurethane, which is widely used in the production of electronic transformers, electronic coils, relays, micro-motors, high-frequency electrical instruments and other electronic requirements for the production of enameled wires for windings.
3. Weldable polyesterimide paint has the general properties of polyesterimide paint, and can be directly welded at 475°.
The paint film ofpolyvinyl acetal enameled flat wire is required to be smooth, the vaporization of the solvent must be carried out in the form of evaporation, and boiling is absolutely not allowed, otherwise the surface of the enameled wire will produce bubbles and hair particles. As the solvent in the paint solution evaporates, the insulating paint becomes thicker and thicker, and the solvent inside the paint solution takes longer to migrate to the surface, especially for coarse-sized polyvinyl acetal enameled flat wire. Due to the thickness of the paint solution, the evaporation time needs to be prolonged. Avoid the vaporization of the internal solvent and get a smooth paint film. The temperature of the evaporation zone of the oven depends on the boiling point of the solution, and the temperature of the evaporation zone is lower when the boiling point is lower. However, the temperature of the paint liquid on the surface of the wire is transferred from the furnace temperature, coupled with the heat absorption of the evaporation of the melting wave and the heat absorption of the wire, so the temperature of the paint liquid on the surface of the wire is much lower than the furnace temperature.
The thermal grade of polyvinyl acetal enameled flat wire is i05 and 120. It has good mechanical strength, adhesion, transformer oil resistance and refrigerant resistance, but the product has poor moisture resistance, low thermal softening breakdown temperature, and durable benzene-alcohol Due to the weak performance of mixed solvent, a small amount is used for oil-immersed transformers and windings of oil-filled motors.
Established in 2009, with registered capital of nearly 6 million dollars, Baiwei Electric is a manufacturer and exporter specializing in various magnet wires. There is a big variety of magnet wire including enamelled wire, paper covered wire, continuously transposed conductors and composite wire. We are providing high quality for the fields of winding, transformers, instruments and electric equipment, etc.
