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Poly(aryl etherketone) based varnish for wire coating and method coating a wire from a solution

A polyaryl ether ketone, metal wire technology, applied in the field of polyaryl ether ketone based varnish for metal wire coating and metal wire coating by solution, can solve unsatisfactory, can not provide low level defects Thin coating, etc., to achieve the effect of good adhesion, reduced dielectric failure, and reduced risk

Inactive Publication Date: 2020-05-15
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PEEK-coated metal wires are known; however, PEEK-coated metal wires currently on the market are unsatisfactory for certain applications, such as solenoid coils for electric motors
Known PEEK coated metal wires are produced by a melt extrusion process which does not provide suitable thin coatings with low levels of defects typical for magnet wire applications

Method used

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  • Poly(aryl etherketone) based varnish for wire coating and method coating a wire from a solution
  • Poly(aryl etherketone) based varnish for wire coating and method coating a wire from a solution
  • Poly(aryl etherketone) based varnish for wire coating and method coating a wire from a solution

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Embodiment Construction

[0024] Aspects of the invention include: a coated metal wire having at least one polyarylketone-containing coating and a method of producing a coated metal wire from hydrogen, the varnish containing a polyaryl ketone dissolved in a phenolic solvent Ether ketones (such as polyether ketone ketone (PEKK) and polyether ether ketone (PEEK)).

[0025] As used herein, a "coating" is a thin layer, skin, or covering well known to those skilled in the art. Makes coatings adhere to electrical cables or wires. Depending on the application and use, the coating can be non-porous, porous, microporous, etc. The thickness of the coating is unlimited and can be any suitable thickness. For example, the coating thickness may range from about 1 nm (0.001 μm) to 1500 μm, such as from about 0.25 μm to about 250 μm. For some applications, the coating thickness can be from about 0.5 μm to about 2 μm. The total coating thickness (ie all coatings on the wire) of the coated metal wire obtained by the...

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Abstract

A method of manufacturing a coated metallic wire having a polymeric coating, the method includes: dissolving at least one polymer including a poly(aryl etherketone) in at least one phenolic solvent toform a solution; contacting the surface of a metallic wire with the solution to form a coated wire having at least one layer of coating; and drying the coated wire to evaporate residual solvent.

Description

[0001] field of invention [0002] Embodiments of the present invention relate to a method of producing coated metal wires from varnishes containing polyaryl ether ketones such as polyether ketone ketone (PEKK) and polyether ether ketone (PEEKK) dissolved in a phenolic solvent. )). Background technique [0003] High temperature resistant metal wires and cables are of great importance in many industries, including the electric motor industry. Currently, varnishes of polyimide, polyamideimide, and polyesterimide are used when designing wires for electromagnetic coils of electric motors. However, these materials are sensitive to moisture. Consequently, coatings of these materials are prone to degradation in high humidity environments, resulting in unsatisfactory insulation. [0004] Polyaryl ether ketones such as polyether ketone ketone (PEKK) and polyetherether ketone (PEEK) exhibit high temperature resistance without the disadvantage of moisture sensitivity. PEEK-coated wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/00H01B3/42H01B13/16
CPCH01B3/307H01B3/427H01B13/065H01B19/04H01B13/16C08L71/02C09D171/02C08L2203/202C08G65/4012C08G2650/40C08K5/136H01B3/36H01B7/0216H01B7/0225H01B13/165
Inventor J·佑安内T·A·斯帕J-A·拉斐特
Owner ARKEMA FRANCE SA
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