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Polyester enameled wire capable of direct welding and production method thereof

A technology of polyester paint and covered wire, which is applied in the direction of polyester coating, cable/conductor manufacturing, coating, etc., can solve the problems of increasing labor costs of downstream customers, reducing production efficiency of downstream customers, and poor thermal shock performance, etc., to achieve omission Effect of mechanical or chemical paint removal process, high dielectric loss characteristics, high thermal shock resistance

Active Publication Date: 2019-06-14
ZHUHAI RONSEN SUPER MICRO WIRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing polyester enameled wires are not directly solderable products, and can only be stripped by chemical or mechanical methods, which increases the process steps and labor costs of downstream customers, and reduces the production efficiency of downstream customers
At the same time, the existing polyester enameled wire has poor thermal shock performance and low heat and humidity resistance

Method used

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  • Polyester enameled wire capable of direct welding and production method thereof
  • Polyester enameled wire capable of direct welding and production method thereof
  • Polyester enameled wire capable of direct welding and production method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a polyester enameled wire that can be directly welded, see figure 1 , the directly weldable polyester enameled wire includes a conductive wire core 1 and an insulating layer 2 arranged on the outer surface of the conductive wire core 1 . The thickness of the insulating layer 2 is the thickness of the paint film of grade 1 or grade 2.

[0042] The conductive wire core 1 of this embodiment is a pure copper wire with a diameter of 0.20mm and high conductivity (copper content is more than 99.95%), or in special use occasions, the conductor core wire can also be selected from a copper alloy with higher conductivity (including silver-copper alloy, tin-copper alloy, magnesium-copper alloy, zinc-copper alloy, etc.), aluminum wire and copper-clad aluminum wire. The insulating layer 2 is formed by baking polyester insulating varnish at high temperature. The polyester insulating varnish contains polyester resin and the first solvent. The polyester resin i...

test approach 10

[0057] (2) Softening breakdown temperature: Two enameled wire samples are perpendicularly intersected, a specified load is applied on the intersection point, and the softening breakdown is expressed by the temperature when a short-circuit current is generated between the samples. For specific test methods, refer to Test Method 10: Softening Breakdown in GB / T 4074.6-2008.

test approach 17

[0058] (3) Direct solderability: It is expressed by the time required for the sample to be immersed in a solder pot at a certain temperature to remove the paint film and coat the tin layer. For specific test methods, refer to test method 17 in GB / T 4074.4-2008: direct solderability.

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Abstract

The invention provides a polyester enameled wire capable of direct welding and a production method thereof. The polyester enameled wire capable of direct welding comprises a conductive wire core and an insulation layer, wherein the insulation layer is arranged on an outer surface of the conductive wire core, the insulation layer is fabricated by high-temperature baking of polyester insulation paint, the polyester insulation paint comprises polyester resin and a first solvent, the polyester resin is formed by polymerization of polyester polyol, phenolic aldehyde, tetrabutyl titanate and closedpolyisocyanate, the first solvent comprises cresol and xylene, a self-adhesive layer is arranged on an outer surface of the insulation layer and is formed by high-temperature baking of self-adhesive paint, the self-adhesive paint comprises mixed resin and a second solvent, the mixed resin comprises polyamide resin, polyimide resin and epoxy resin, and the second solvent comprises cresol and xylene. The polyester enameled wire capable of direct welding has a function of direct tin pasting and welding, the process of mechanical or chemical depainting is omitted, the coil winding processing efficiency is greatly improved, and meanwhile, the heat impact-resistant performance and wet heat-resistant performance of the insulation layer of the enameled wire are improved.

Description

technical field [0001] The invention relates to the field of insulated wires, in particular to a polyester enameled wire capable of direct welding and a production method thereof. Background technique [0002] At present, the thermal grades of polyester enameled wires on the market are mainly 130 and 155. Because polyester enameled wires have high mechanical strength, good elasticity, adhesion, solvent resistance and electrical properties, they are widely used in various motors. , electrical appliances, instruments, telecommunications equipment and home appliances. [0003] However, the existing polyester enameled wires are non-solderable products, and can only be stripped by chemical or mechanical methods, which increases the process steps and labor costs of downstream customers, and reduces the production efficiency of downstream customers. At the same time, the existing polyester enameled wire has poor thermal shock performance and low heat and humidity resistance. Con...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/28H01B7/282H01B7/29H01B3/42H01B13/00H01B13/16H01B13/22H01B13/30C09D167/00C09D5/25
Inventor 李成杰
Owner ZHUHAI RONSEN SUPER MICRO WIRE CO LTD