Supercharge Your Innovation With Domain-Expert AI Agents!

Insulating varnish and insulated wire formed by using the same

A technology for insulating coatings and insulated wires, applied in the fields of insulating coatings and insulated wires, can solve problems such as insulation film erosion, adverse effects of insulation systems, and insulation damage, and achieve good coating properties

Active Publication Date: 2011-10-05
PROTERIAL LTD
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, due to the inverter control, a high inverter surge voltage (sharp overvoltage) is often generated in the appliance, and once such an inverter surge voltage is generated, there is a possibility of damage to the coil in the appliance. Insulation system adversely affected
In particular, in insulated wires used for coils, partial discharges mainly occur between wires (between insulation coatings of adjacent insulated wires) or between grounds (between insulation coatings and stator cores). Erosion of the film, and even the problem of insulation breakdown

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Insulating varnish and insulated wire formed by using the same
  • Insulating varnish and insulated wire formed by using the same
  • Insulating varnish and insulated wire formed by using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] An insulating paint was obtained by mixing a polyamideimide resin paint whose 100% by weight of the solvent was cyclohexanone, and a silicone sol whose 100% by weight of the dispersion solvent was cycloheptanone. The content of cyclic ketones is 100% by weight relative to the entire solvent component including the solvent and the dispersion solvent.

Embodiment 2

[0070] An insulating paint was obtained by mixing a polyamideimide resin paint whose solvent was 85% by weight of γ-butyrolactone and 15% by weight of NMP, and a silicone sol whose dispersing solvent was 100% by weight of cyclohexanone. The content of cyclic ketones with respect to the whole solvent component including a solvent and a dispersion solvent was 23.1% by weight.

Embodiment 3

[0072] 80% by weight of the solvent is γ-butyrolactone, 15% by weight is NMP, and 5% by weight is polyamide-imide resin coating of cyclohexanone, 77.8% by weight of the mixed dispersion solvent is cyclohexanone, 22.2% by weight % is the organosilicon sol of γ-butyrolactone to obtain the insulating coating. The content of cyclic ketones with respect to the whole solvent component including a solvent and a dispersion solvent was 21.8 weight%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides an insulating varnish and an insulated wire formed by using the same. The invention provides an insulating varnish advantaged by good dispersion of silica particles and coating performance of a conductor with a quadrangular cross section and an insulated wire provided with an insulating coat via the insulating varnish. The insulating varnish usable for an insulating coat of an insulated wire on a conductor with a quadrangular cross section contains polyamide-imide resin varnish and organosilica sol mixed with the polyamide-imide resin varnish. The polyamide-imide resin varnish contains solvent and polyamide-imide resin. The organosilica sol contains dispersion medium and silica particles dispersed in the dispersion medium. Cyclic ketones having boiling point in a range of 130 to 180 DEG C. make up 70 to 100 wt % or more of the dispersion medium.

Description

technical field [0001] The present invention relates to an insulating coating and an insulated wire using the insulating coating, in particular to an insulating coating suitable for coils of electric appliances such as motors and transformers and an insulated wire manufactured using the insulating coating. Background technique [0002] In recent years, in response to demands for miniaturization, high performance, and energy saving of electric appliances, inverter control of electric appliances with high voltage and high current has been widely performed. In this case, due to the inverter control, a high inverter surge voltage (sharp overvoltage) is often generated in the appliance, and once such an inverter surge voltage is generated, there is a possibility of damage to the coil in the appliance. adverse effects on the insulation system. In particular, in insulated wires used for coils, partial discharges mainly occur between wires (between insulation coatings of adjacent i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D5/25H01B3/30
CPCC09D179/08H01B3/305H01B3/306
Inventor 菊池英行花轮秀仁
Owner PROTERIAL LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com