Enameled Wire
- Enameled Aluminum Wire
- Enameled Copper Wire
- Copper Strips
- Aluminum Foils
- Paper Covered Wire
- Other Special Enameled Wire
Services
- Corona-resistant enameled wire
- Film Enameled Wire
- Kapton Magnet wire
- Continuously Transposed Conductor
- Fiberglass covered wire
- Paper Wrapped Insulated Winding Wire
- Aluminum Foils
- Transformer Copper Foils
- AWG SWG Enameled Aluminum Wire
- AWG SWG Enameled Copper Wire
Contact
- Zhengzhou LP Industry CO.LTD
- E-mail: office@cnlpzz.com
- Mobile: +86-18103865695
- whatsapp:+86-19337889070
- Tel: +86-371-65861282
- Fax: +86-371-65861123
- Address: No. 86, Jingsan Road, Jinshui Zone, Zhengzhou , Henan Pro. China.
Why do the expert invent Self-lubricating enameled wire?
What is Self-lubricating enameled wire?
A enameled wire having 100 parts by weight of a polyamide-imide resin, 1 to 5 parts by weight of a lubricant, 1 to 200 parts by weight of a masking agent-stabilized isocyanate, and 1 to 30 parts by weight of a silane coupling agent are dissolved or dispersed in a solvent to prepare a coating composition. The coating composition is then coated directly or through other insulator on the circumference of a conductor, and the coating is then baked to form a lubricating layer.
Why do the expert invent Self-lubricating enameled wire?
In recent years, for the purposes of reducing the size of equipment, increasing coil winding speed, and reducing inferior quality ratio of coils, it is required for an enameled wire for use in coils of electric or electronic equipment such as motors and transformers to have excellent surface lubricity and abrasion resistance which enable winding under severe conditions.
In particular, according to recent requirements to improve efficiency of motors from the viewpoint of energy saving, it is required for an enameled wire for use in high-space factor motors to have further improved surface lubricity and abrasion resistance.
The following methods to may be mentioned as conventional methods for improving the lubricity and abrasion resistance of enameled wires.
(1) A method wherein a lubricating material composed mainly of paraffin or a fatty acid ester is coated on the surface of enameled wires optionally followed by baking.
(2) A method wherein either a nylon resin having excellent lubricity or a coating composition prepared by adding a lubricant, such as low-molecular weight polyethylene, to a nylon resin is coated on the circumference of a conductor through other insulating layer, followed by baking of the coating.
(3) A method wherein a coating composition prepared by adding a lubricant component, such as polyethylene wax or a fatty acid ester, to an insulating coating composition containing, for example, a polyester or a polyamide-imide is coated on the circumference of a conductor through other insulating layer, followed by baking of the coating.
On the other hand, coils for use, for example, in motors and transformers, are treated with varnish, such as epoxy and unsaturated polyester, from the viewpoint of improving band strength and insulating properties of the coils.
The enameled wires, which have been subjected to lubrication treatment by the methods (1) to (3), however, are disadvantageously inferior to adhesion to the varnish as the treating agent in comparison with conventional enameled wires not subjected to lubricating treatment.
For this reason, in order to improve the reliability of coils, the development of self-lubricating enameled wires having excellent adhesion to varnish as the treating agent has been desired in the art.
This article is from US6534717B2, United States
A enameled wire having 100 parts by weight of a polyamide-imide resin, 1 to 5 parts by weight of a lubricant, 1 to 200 parts by weight of a masking agent-stabilized isocyanate, and 1 to 30 parts by weight of a silane coupling agent are dissolved or dispersed in a solvent to prepare a coating composition. The coating composition is then coated directly or through other insulator on the circumference of a conductor, and the coating is then baked to form a lubricating layer.
Why do the expert invent Self-lubricating enameled wire?
In recent years, for the purposes of reducing the size of equipment, increasing coil winding speed, and reducing inferior quality ratio of coils, it is required for an enameled wire for use in coils of electric or electronic equipment such as motors and transformers to have excellent surface lubricity and abrasion resistance which enable winding under severe conditions.
In particular, according to recent requirements to improve efficiency of motors from the viewpoint of energy saving, it is required for an enameled wire for use in high-space factor motors to have further improved surface lubricity and abrasion resistance.
The following methods to may be mentioned as conventional methods for improving the lubricity and abrasion resistance of enameled wires.
(1) A method wherein a lubricating material composed mainly of paraffin or a fatty acid ester is coated on the surface of enameled wires optionally followed by baking.
(2) A method wherein either a nylon resin having excellent lubricity or a coating composition prepared by adding a lubricant, such as low-molecular weight polyethylene, to a nylon resin is coated on the circumference of a conductor through other insulating layer, followed by baking of the coating.
(3) A method wherein a coating composition prepared by adding a lubricant component, such as polyethylene wax or a fatty acid ester, to an insulating coating composition containing, for example, a polyester or a polyamide-imide is coated on the circumference of a conductor through other insulating layer, followed by baking of the coating.
On the other hand, coils for use, for example, in motors and transformers, are treated with varnish, such as epoxy and unsaturated polyester, from the viewpoint of improving band strength and insulating properties of the coils.
The enameled wires, which have been subjected to lubrication treatment by the methods (1) to (3), however, are disadvantageously inferior to adhesion to the varnish as the treating agent in comparison with conventional enameled wires not subjected to lubricating treatment.
For this reason, in order to improve the reliability of coils, the development of self-lubricating enameled wires having excellent adhesion to varnish as the treating agent has been desired in the art.
This article is from US6534717B2, United States
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