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High temperature resistant economical electrostatic powder coating for electric room heater and preparation method thereof

An electrostatic powder, high temperature resistant technology, applied in the direction of powder coatings, fireproof coatings, polyester coatings, etc., can solve the problems of not being able to meet such requirements, and achieve the effects of high labor productivity, good heat resistance and cost saving

Inactive Publication Date: 2009-10-28
杨彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the surface temperature of the general electric heater can reach about 115°C under normal conditions, the powder coating for radiators usually used for steam or hot water heating cannot meet this requirement, even ordinary heat-resistant powder Coatings cannot meet this requirement, and it is necessary to develop new high-temperature-resistant powder coatings for electric heaters.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The powder coating formula for friction electrostatic coating is: 55 parts of high temperature resistant polyester resin, 5 parts of triglycidyl isocyanurate, 25 parts of pigment, 11 parts of filler, 1 part of leveling agent, 1 part of dispersant, degassing agent 0.5 parts of agent, 0.5 parts of high temperature antioxidant, 0.5 parts of triboelectric electrification agent, and 0.2 parts of loosening agent. The powder coating with an average particle size of 25-30 μm is prepared according to the above-mentioned powder coating preparation method. After friction electrostatic powder coating, it is baked and cured at 200 ° C / 10-15 minutes to obtain a relatively smooth coating with a film thickness of 50-60 μm. Film appearance, coating gloss 85%, bending 2mm, impact strength 50cm, adhesion level 1, coating film pencil hardness H, coating film does not bubble, does not fall off, and has no obvious yellowing phenomenon after working continuously at 200°C for 12 hours .

Embodiment 2

[0041] High-voltage electrostatic powder coating powder coating formulation example is: high temperature resistant polyester resin (polyester resin A 27.5 parts, polyester resin B 27.5 parts) 55 parts, triglycidyl isocyanurate 5 parts, pigment 15 parts, filler 22 parts, 1 part of leveling agent, 1 part of dispersant, 0.5 part of degasser, 0.5 part of high temperature antioxidant, 0.2 part of loosening agent. The powder coating with an average particle size of 25-30 μm is prepared according to the above-mentioned powder coating preparation method. After high-voltage electrostatic powder coating, it is baked and cured at 200 ° C / 10-15 minutes to obtain a relatively flat coating with a film thickness of 50-60 μm. Film appearance, coating gloss 32%, bending 2mm, impact strength 40cm, adhesion level 1, coating film pencil hardness H, coating film does not bubble, does not fall off, and has no obvious yellowing when working continuously at 200°C for 12 hours Phenomenon.

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PUM

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Abstract

The invention discloses a high temperature resistant economical electrostatic powder coating for an electric room heater and a preparation method thereof. The formulation of the powder coating comprises the following compositions in percentage by weight: 53 to 57 percent of thermosetting resin, 3 to 7 percent of curing agent, 1 to 30 percent of pigment, 5 to 34 percent of filler and 2 to 5 percent of auxiliary agent. The powder coating is produced by adopting the method of premixing, melt extrusion and mixing, tabletting, cooling and crushing, fine grinding and classification, sieving and separation, and product, wherein the average particle size of the powder coating is between 25 and 30 mu m, and the thickness requirement between 50 and 60 mu m of an economic coating is met. The powder coating is suitable for coating by a high voltage electrostatic powder coating method and simultaneously is suitable for coating by a frictional electrostatic powder coating method.

Description

technical field [0001] The invention relates to a powder coating and a preparation method thereof, in particular to a high-temperature-resistant and energy-saving electrostatic powder coating for an electric heater and a preparation method thereof. Background technique [0002] With the improvement of people's material and cultural living standards, the demand for heating in winter is constantly expanding, and the heating methods are also diversified. From steam and hot water heating in winter in the past, it has gradually expanded to use kerosene or diesel oil and electricity as energy for heating. With the development, the heating equipment is simple and convenient, the users of electric heating with reasonable price are increasing, and the electric heater equipment is also increasing rapidly. This kind of electric heater uses heat conduction oil as the medium, and uses electric heating wire as the heat source to heat the heat conduction oil, and transfers the heat to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/12C09D5/03C09D5/18
Inventor 薛智荣南仁植
Owner 杨彬
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