Low-temperature coating for insulating material, application and preparation method of low-temperature coating
An insulating material and low-temperature technology, applied in coatings, devices for coating liquid on the surface, superconductive devices, etc., can solve the problem of high price of polyimide tape, unfavorable application and promotion, and easy aging of polyimide tape And other issues
Inactive Publication Date: 2021-05-14
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
[0002] At present, in order to ensure mutual insulation between superconducting tapes, polyimide tapes are usually used for winding, but polyimide tapes are prone to aging, and the winding process is relatively complicated, the surface thickness cannot be flexibly controlled, and it is difficult to achieve a uniform surface. For example, the publication number is CN207699511U, the publication date is August 7, 2018, and the Chinese patent document titled "A Polyimide Tape Insulation Structure for Reinforced Electromagnetic Insulator" discloses a polyimide tape insulation structure
But in the technical scheme disclosed in this patent document, how to coat and prepare coating is not involved, and what obtain is polyimide adhesive tape
[0003] In addition, the high price of polyimide tape makes the production cost extremely high and is very unfavorable for application promotion
Method used
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Embodiment 1-4 and comparative example 1-4
[0035] The low-temperature coatings for insulating materials of Examples 1-4 and the comparative composite materials of Comparative Examples 1-4 were prepared by the following steps:
[0036] Step S1: configure raw material solution, wherein, the raw material adopts configuration: butadiene (31wt%), acetone (21wt%), methyl ethyl ketone (12wt%), xylene (10wt%), propylene glycol monomethyl ether Acetate (4wt%) and acrylate solution (22wt%);
[0037] Step S2: Evenly apply the raw material solution obtained in Step S1 to the surface of the superconducting strip to form a primary coating;
[0038] Step S3: controlling the thickness of the primary coating to be less than 20 μm, so as to obtain an ultra-thin insulating coating;
[0039] Step S4: curing the ultra-thin insulating coating so that it is fully adhered to the surface of the superconducting strip;
[0040] Step S5: testing the low-temperature insulating properties of the ultra-thin insulating coating, and obtaining a supe...
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Abstract
The invention discloses a low-temperature coating for an insulating material. The low-temperature coating comprises the following components: a hydrocarbon compound, a hydrocarbon derivative, resin and a polymer thereof. In addition, the invention also discloses an application of the low-temperature coating for the insulating material in a superconducting tape. In addition, the invention further discloses a superconducting tape, and the surface layer of the superconducting tape is coated with the low-temperature coating. Furthermore, the invention also discloses a preparation method of the superconducting tape, and the preparation method comprises the following steps: S1, preparing a raw material solution; S2, uniformly coating the surface of the superconducting tape with the raw material solution to form a primary coating; S3, controlling the thickness of the primary coating, and controlling the thickness of the primary coating to be less than 20 microns to obtain an ultrathin insulating coating; and S4, curing the ultrathin insulating coating, and enabling the ultrathin insulating coating to be fully adhered to the surface of the superconducting tape.
Description
technical field [0001] The invention relates to the field of superconducting materials, in particular to a coating for superconducting materials, its application, superconducting tape and its preparation method. Background technique [0002] At present, in order to ensure mutual insulation between superconducting tapes, polyimide tapes are usually used for winding, but polyimide tapes are prone to aging, and the winding process is relatively complicated, the surface thickness cannot be flexibly controlled, and it is difficult to achieve a uniform surface. For example, the publication number is CN207699511U, the publication date is August 7, 2018, and the Chinese patent document titled "A Polyimide Tape Insulation Structure for Reinforced Electromagnetic Insulator" discloses a polyimide tape insulation structure . But in the technical scheme disclosed in this patent document, how to coat and prepare coating is not involved, and what obtain is polyimide adhesive tape [0003...
Claims
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IPC IPC(8): C09D4/06C09D5/25H01B12/02B05D7/24
CPCC09D4/06C09D5/00H01B12/02B05D7/24
Inventor 张智巍郭春江金之俭洪智勇
Owner SHANGHAI JIAO TONG UNIV