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Special insulating powder coating for electro-magnetism line and preparation method thereof

A technology of insulating powder and magnet wire, applied in powder coating, epoxy resin coating, coating, etc., can solve the problems of restricting the use range of magnet wire, difficulty in controlling the oxide film thickness of oxide film covered wire, and poor mechanical strength

Inactive Publication Date: 2009-06-17
GUANGZHOU QINGTIAN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electromagnetic wires for motors have different requirements for insulation and heat resistance depending on the conditions of use of the motor. At present, motors generally use solvent-based enameled wires, glass fiber covered wires, oxide film covered wires and other products, and solvent-based enameled wires have coating processes. slow, the solvent is highly volatile and causes serious pollution to the environment, and the glass fiber covered wire has problems such as large insulation thickness, poor mechanical strength, and high cost, while the oxide film covered wire has problems such as difficulty in controlling the thickness of the oxide film.
These problems have restricted the scope of use of electromagnetic wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Coating components and weight content: epoxy resin with an epoxy equivalent of 700g / eq 56%, sebacic acid dihydrazide 20%, quartz powder 20%, leveling agent PV88 2.0%, benzoin 0.5%, 2-methyl Imidazole 1.3%, white carbon black 0.2%.

[0024] Coating preparation method:

[0025] (1) Weigh epoxy resin, curing agent, inorganic filler, leveling agent, benzoin, curing accelerator and white carbon black in proportion, place in mixing tank, mix and crush for 2 minutes;

[0026] (2) The crushed material is extruded into a twin-screw extruder or a single-screw extruder, and the temperature of the extruder is controlled at 85°C during the material extrusion process;

[0027] (3) The extruded material is crushed into 40 micron powder particles by ACM, then magnetically separated and sieved, and then packaged. Example 2

Embodiment 2

[0028] Coating components and weight content: epoxy resin with an epoxy equivalent of 800g / eq 60%, sebacic acid dihydrazide 15%, quartz powder 20%, leveling agent PV88 2.0%, benzoin 1.0%, 2-formazol 1.8% imidazole, 0.2% white carbon black.

[0029] Coating preparation method:

[0030] (1) Weigh epoxy resin, curing agent, inorganic filler, leveling agent, benzoin, curing accelerator and silica in proportion, place in a mixing tank, mix and break for 3 minutes;

[0031] (2) The crushed material is extruded into a twin-screw extruder or a single-screw extruder, and the temperature of the extruder is controlled at 85°C during the material extrusion process;

[0032] (3) The extruded material is crushed into 50 micron powder particles by ACM, then magnetically separated and sieved, and then packaged.

Embodiment 3

[0034] Coating components and weight content: epoxy resin with an epoxy equivalent of 800g / eq 55%, sebacic acid dihydrazide 25%, calcium silicate 15%, leveling agent P67 1.9%, benzoin 1.0%, 2-benzene 2.0% based imidazoline, 0.1% white carbon black.

[0035] Coating preparation method:

[0036] (1) Weigh epoxy resin, curing agent, inorganic filler, leveling agent, benzoin, curing accelerator and silica in proportion, place in a mixing tank, mix and break for 3 minutes;

[0037] (2) The crushed material is extruded into a twin-screw extruder or a single-screw extruder, and the temperature of the extruder is controlled at 90°C during the material extrusion process;

[0038] (3) The extruded material is crushed into 50 micron powder particles by ACM, then magnetically separated and sieved, and then packaged.

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Abstract

The present invention discloses a insulating powder paint exclusively used on electro-magnetic wires, which includes the following components that measured in weight percentage: epoxy resins 60-70%, firming agent 15-30%, inorganic filler 10-20%, flatting agent 1.0-2.0%, styrax benzoin 0.3-1.0%, curing accelerator 0.8-2.0% and siliceous reinforcing agent 0.1-0.3%. The insulating powder paint exclusively used on electro-magnetic wires can be painted either by electrostatic painting or ebullated bed dipping to obtain round wire and lenticular wire in different specifications with solidification temperature 200 DEG C and solidification time 10 to 30 minutes. The coating layer of the painted electro-magnetic wires has semitransparent neat and smooth appearance, excellent flexibility, favorable corner coverage, excellent electroinsulating property and heatproof property, and can meet level 180 electroinsulating property requirement that prescribed in GB6109.

Description

technical field [0001] The invention relates to a special insulating powder coating for electromagnetic wires, and also relates to a preparation method of the special insulating powder coating for electromagnetic wires. Background technique [0002] With the rapid development of today's electronics and motor industries, on the one hand, high intelligence, high efficiency, small and light weight, high precision, environmental protection, energy saving and combination have become the main development trends of electronics and motor technologies; on the other hand, the work of electronic and motor equipment Environments also tend to be diverse. In motor products, the quality of insulating materials is a key factor in determining the quality of motor products. Therefore, in order to ensure the normal operation of the equipment, it is necessary to have high-performance insulating materials to improve the adaptability and service life of the equipment to the working environment. ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/03C09D5/25
Inventor 杨璠章晓斌高庆福邓祥甘灯河
Owner GUANGZHOU QINGTIAN INDAL
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