Insulated wire and preparation method therefor, winding wire, and electrical device
AssigneeWell Ascent Electronic (Ganzhou) Co., Ltd.
InventorsHuimin Ye, Yuejia Zhu, Zuomao Zhu
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Abstract
The present disclosure provides an insulated wire and a preparation method therefor, a winding wire, and an electrical device, relating to the technical field of electrochemical elements. The insulated wire includes a conductor and an intermediate layer and an insulating layer sequentially coated on the conductor; the insulating layer includes thermoplastic polyimide and polyetheretherketone; a mass percentage of the thermoplastic polyimide in the insulating layer ranges from 85% to 95%, and a mass percentage of the polyetheretherketone in the insulating layer ranges from 5% to 15%; the number of bubbles with a pore size of 30 μm or more in the insulating layer is not more than 5 per 100 m.
Claims20
An insulated wire, wherein the insulated wire comprises a conductor and an intermediate layer and an insulating layer sequentially coated on the conductor;
- a material of the insulating layer comprises thermoplastic polyimide and polyetheretherketone;
- a mass percentage of the thermoplastic polyimide in the insulating layer ranges from 85% to 95%, and a mass percentage of the polyetheretherketone in the insulating layer ranges from 5% to 15%;
- and
- the number of bubbles with a pore size of 30 μm or more in the insulating layer is not more than 5 per 100 m;
- and under a condition that the insulated wire is ring cut and stretched by 20%, a length of the insulated wire losing adhesion is not greater than a width of the conductor.
A preparation method for an insulated wire, comprising a coating and curing process and an extrusion process, wherein
- the coating and curing process comprises:
- coating a coating solution for forming an intermediate layer on a surface of a conductor, and curing to form a single bonding layer, which are repeated multiple times so as to form the intermediate layer;
- and
- the extrusion process comprises:
- forming an insulating layer comprising polyetheretherketone and thermoplastic polyimide on the surface of the conductor through the extrusion process, wherein a mass percentage of the thermoplastic polyimide in the insulating layer ranges from 85% to 95%, a mass percentage of the polyetheretherketone in the insulating layer ranges from 5% to 15%;
- the number of bubbles with a pore size of 30 μm or more in the insulating layer is not more than 5 per 100 m;
- and under a condition that the insulated wire is ring cut and stretched by 20%, a length of the insulated wire losing adhesion is not greater than a width of the conductor.
Dependencies are inferred from the claim text.