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Insulating powder coating and preparation method thereof

An insulating powder and coating technology, applied in powder coatings, fire-retardant coatings, epoxy resin coatings, etc., can solve the problems of shortening the service life of products, difficult insulation performance, etc., and achieve low water absorption, heat resistance and chemical resistance. The effect of good and excellent insulating properties

Inactive Publication Date: 2021-05-14
SHANGHAI BANZAN MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the motor product works, the temperature of the product changes, it is difficult to maintain long-term insulation performance, thereby shortening the service life of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of above-mentioned insulating powder coating comprises the steps:

[0030] Step 1, mixing epoxy resin, curing agent, curing accelerator, filler, auxiliary agent and pigment according to parts by mass to obtain raw materials for preparation;

[0031] Step 2, adding the prepared raw materials into a twin-screw extruder for processing to obtain materials;

[0032] Step 3, adding the material into a pulverizer for grinding to obtain a first-grade powder;

[0033] Step 4, the primary powder is removed by magnetic separation to obtain the finished powder coating, and the preparation is completed.

[0034] In a preferred embodiment of the present invention, the processing temperature in step 2 is 90-110° C., the rotation speed of the main engine is 390-410 rpm, and the feeding rotation speed is 21-28 rpm.

Embodiment 1

[0037] This embodiment provides an insulating powder coating, which includes the following components in parts by mass: 60 parts of silicone rubber modified epoxy resin, 15 parts of diacid dihydrazide, 1.5 parts of HW-102, mica powder 35 parts, 3 parts of leveling agent, 1 part of high temperature antioxidant, 2 parts of ultraviolet absorber, 2 parts of titanium dioxide.

[0038] The preparation method of above-mentioned insulating powder coating comprises the steps:

[0039] Step 1, mixing the components according to the specified mass parts to obtain the preparation raw materials;

[0040] Step 2, adding the prepared raw materials into a twin-screw extruder for processing, the processing temperature is 90-110°C, the speed of the main engine of the twin-screw extruder is 390-410rpm, and the feeding speed is 21-28rpm to obtain the material;

[0041] Step 3, adding the material into a pulverizer for grinding to obtain a first-grade powder;

[0042] Step 4, the primary powder ...

Embodiment 2

[0044] This embodiment provides an insulating powder coating, which includes the following components in parts by mass: 50 parts of o-cresol modified epoxy resin, 10 parts of modified dicyandiamide, 1 part of HW-105, BaSO4 25 parts, 2 parts of leveling agent, 2 parts of defoamer, 1 part of high temperature antioxidant, 1 part of flame retardant, 1 part of UV absorber, 3 parts of permanent yellow.

[0045] The preparation method of above-mentioned insulating powder coating comprises the steps:

[0046] Step 1, mixing the components according to the specified mass parts to obtain the preparation raw materials;

[0047] Step 2, adding the prepared raw materials into a twin-screw extruder for processing, the processing temperature is 90-110°C, the speed of the main engine of the twin-screw extruder is 390-410rpm, and the feeding speed is 21-28rpm to obtain the material;

[0048] Step 3, adding the material into a pulverizer for grinding to obtain a first-grade powder;

[0049] S...

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PUM

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Abstract

The invention provides an insulating powder coating. The insulating powder coating comprises the following components in parts by mass: 40-70 parts of epoxy resin, 10-20 parts of a curing agent, 1-2 parts of a curing accelerator, 20-50 parts of filler, 5-10 parts of an auxiliary agent and 1-5 parts of pigment. According to the insulating powder coating provided by the invention, the epoxy resin, the curing agent, the curing accelerator and the filler are mixed, then the auxiliary agent and the pigment are added, the powder coating is prepared through a twin-screw extruder and a pulverizer, and then redundant impurities are removed through magnetic separation, so that the prepared insulating powder coating has excellent insulating property and excellent toughness, has strong binding power, low water absorption rate and good water resistance, has the characteristics of good damp and heat resistance, good heat resistance and good chemical resistance, and can be widely applied.

Description

technical field [0001] The invention relates to the field of powder coatings, in particular to an insulating powder coating and a preparation method thereof. Background technique [0002] With the rapid development of industry, the utilization rate of motor products is getting higher and higher. The quality of insulating materials determines the key factors of the quality of motor products, which in turn determines the stability and service life of motor products. Some accessories in motor products need to use insulating coatings, such as part of the rotor, stator and magnetic wires wound on the rotor. However, solvent-based coatings have a great impact on the environment and will cause great environmental pollution. As the requirements for environmental protection are getting higher and higher, the position of insulating powder coatings in motor products is becoming more and more important. [0003] After the existing insulating powder coating is coated on the metal surfa...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D183/04C09D5/25C09D5/03C09D7/61C09D5/18
CPCC08K2003/3045C08L2201/08C09D5/033C09D5/18C09D163/00C08L83/04C08K3/34C08K3/30C08K3/346C08K3/36
Inventor 黄健毕宏海储江顺孙晓光李薇薇李楠杨少辉
Owner SHANGHAI BANZAN MACROMOLECULE MATERIAL
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