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Coating composition for metal conductors

A composition and coating technology, applied in the direction of metal oxides, cement coatings, coatings, etc., can solve the problems of different heat resistance and mechanical resistance of coatings, achieve the effect of improving storage stability and highlighting heat resistance

Inactive Publication Date: 2013-04-10
AXALTA COATING SYST IP CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the thermal and mechanical resistance of the coating may be different for specific application requirements

Method used

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  • Coating composition for metal conductors
  • Coating composition for metal conductors
  • Coating composition for metal conductors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Add 23 parts by weight of anhydrous colloidal silica solution (50 nm), 20 parts by weight of 1,3-dioxo-2-benzofuran-5- Formic acid, 26 parts by weight of 4,4'-methylene diphenyl diisocyanate and 0.2 parts by weight of metal ester catalyst. The mixture was gradually heated to 150°C until carbon dioxide formation was complete. The material was then treated with 1-methyl-2-pyrrolidone, xylene and Thin by 100 to obtain a clear coat. The wire coating has a solids content of 33.0% (1 g, 1 h, 180° C.; DIN EN ISO 3251 ) and a viscosity of 760 mPas (25° C.; DIN 53015 ).

Embodiment 2

[0074] Add 31 parts by weight of titanium dioxide solution (50nm), 20 parts by weight of 1,3-dioxo-2-benzofuran-5-carboxylic acid, 26 parts by weight of 4,4'-methylene diphenyl diisocyanate and 0.2 parts by weight of metal ester catalyst. The mixture was gradually heated to 150°C until carbon dioxide formation was complete. The material was treated with 1-methyl-2-pyrrolidone, xylene and Thin by 100 to obtain a clear coat. The wire coating has a solids content of 33.8% (1 g, 1 h, 180° C.; DIN EN ISO 3251 ) and a viscosity of 840 mPas (25° C.; DIN 53015 ).

Embodiment 3

[0076] Add 37 parts by weight of fused alumina solution (80 nm), 20 parts by weight of 1,3-dioxo-2-benzofuran-5-carboxylic acid, 26 parts by weight into a 2-liter three-necked flask with a stirrer and a thermometer. parts of 4,4'-methylene diphenyl diisocyanate and 0.2 parts by weight of metal ester catalyst. The mixture was gradually heated to 150°C until carbon dioxide formation was complete. The material was treated with 1-methyl-2-pyrrolidone, xylene and Thin by 100 to obtain a clear coat. The wire coating has a solids content of 32.9% (1 g, 1 h, 180° C.; DIN EN ISO 3251 ) and a viscosity of 630 mPas (25° C.; DIN 53015 ).

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Abstract

The invention relates to a coating composition for coating electrically conductive wires. The coating composition comprising 0.1 to 60 wt% of reactive particles, based on an element-oxygen network and further having reactive functional groups chemically bound to the surface of the element-oxygen network. At least one of the reactive functional groups is an isocyanate group that is bound to the reactive particle via a carbamate group. The coating composition can further contain one or more conventional binders and other additives.

Description

technical field [0001] The present invention relates to coating compositions which provide highly increased thermal and mechanical resistance of coatings for use on electrically conductive wires. Background technique [0002] Three-phase AC motors, such as inverter-controlled motors or high-voltage asynchronous motors, need to be wrapped with wire rods, which should meet strict requirements in terms of heat resistance and mechanical properties, mainly the bending strength of the insulation layer, so as to be able to withstand High voltage load and pulse-shaped voltage load without damage. Furthermore, especially heat resistance is very important for motors operating at high temperatures. Another requirement for wire wrapping of electrical equipment is the partial discharge resistance of the wire coating. [0003] According to WO96 / 41909 a coating composition is disclosed comprising a binder and a particulate material, wherein the particulate material may be a metal oxide s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/08H01B3/08H01B3/10H01F41/12C08K5/29
CPCC08K3/36C08K5/29C09D4/00C09D7/67H01B3/08H01B3/38C09D1/08H01B3/10H01F41/12C09D179/08
Inventor F-R.贝姆P.梅纳斯M.赫姆S.里肯
Owner AXALTA COATING SYST IP CO LLC
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