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High-temperature-resistant powder paint

A technology of powder coatings and high-temperature-resistant pigments, which is applied in the direction of powder coatings, polyester coatings, epoxy resin coatings, etc., and can solve the problems of high cost and popularization.

Inactive Publication Date: 2013-09-25
ZHEJIANG HUACAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is more environmentally friendly than oil-based coatings, its popularization is limited due to its high cost and the need for high-temperature curing (the minimum curing condition is 230°C×20 minutes).

Method used

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  • High-temperature-resistant powder paint
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  • High-temperature-resistant powder paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Accurately weigh the material according to the formula composition shown in Table 1, put it in a high-speed mixer and mix it for 6-8 minutes; extrude the material with an extruder at a temperature of 90-100°C after mixing; cool and crush the extruded material with a pulverizer Crushed into powder particles with an average particle size of 30-33 microns; then sieved with a 180-mesh sieve, and finally packaged into a finished product.

[0028] Table 1. Curing at room temperature and high temperature resistance (600°C) low-cost black sand texture powder coating formula (weight percentage)

[0029] material

%

Silicone resin

25

epoxy resin

13

polyester resin

13

Low melting point glass powder

20

Manganese black

8

Mica powder

19

Sanding agent

0.3

hardening agent

0.7

leveling agent

1

[0030] The powder coating obtained according to the above examples adopts t...

Embodiment 2

[0034] Accurately weigh the material according to the formula composition shown in Table 3, place it in a high-speed mixer and mix it for 6-8 minutes; extrude the material with an extruder at a temperature of 90-100°C after mixing; cool and crush the extruded material with a pulverizer Crushed into powder particles with an average particle size of 30-33 microns; then sieved with a 180-mesh sieve, and finally packaged into a finished product.

[0035] Table 3. Curing at room temperature and high temperature resistance (600°C) low-cost black sand texture powder coating formula (weight percent)

[0036] material

%

Silicone resin

25

epoxy resin

10

polyester resin

15

Low melting point glass powder

20

Manganese black

8

[0037] Mica powder

20

Sanding agent

0.3

hardening agent

0.7

leveling agent

1

[0038] The powder coating obtained according to the above...

Embodiment 3

[0042] Accurately weigh the material according to the formula composition shown in Table 5, place it in a high-speed mixer and mix it for 6-8 minutes; extrude the material with an extruder at a temperature of 90-100°C after mixing; cool and crush the extruded material with a pulverizer Crushed into powder particles with an average particle size of 30-33 microns; then sieved with a 180-mesh sieve, and finally packaged into a finished product.

[0043] Table 5 Curing at room temperature and high temperature resistance (600°C) low-cost black sand texture powder coating formula (weight percent)

[0044] material

%

Silicone resin

30

epoxy resin

10

polyester resin

10

Low melting point glass powder

20

Manganese black

8

Mica powder

15

Sanding agent

0.3

hardening agent

0.7

leveling agent

1

[0045] The powder coating obtained according to the above examples adopts the...

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Abstract

The invention relates to powder paint, and especially relates to a high-temperature-resistant powder paint preparation method. The powder paint is prepared from the materials of: 20-50% of silicone resin, 5-20% of epoxy resin, 5-20% of polyester resin, 10-30% of low-melting-point glass powder, and 1-20% of mica powder. According to the technical scheme provided by the invention, silicone resin and normal-temperature-cured conventional resin are blended, such that the entire system can be cured and crosslinked into a film under normal temperature, and has excellent physical performances. The silicone resin can resist temperature of at least 500 DEG C. Before the low-melting-point glass powder is formed into a film, a coating is prevented from cracking and falling. Also, the paint adopts the low-melting-point glass powder which has a secondary film-forming effect at a high-temperature stage with a temperature higher than 400 DEG C, such that inorganic coating formed by silicone resin under high temperature can be adhered to the substrate. The coating is prevented from cracking and falling, such that decoration and protection are provided for the substrate.

Description

technical field [0001] The invention relates to powder coatings, in particular to high temperature resistant powder coatings. technical background [0002] High-temperature-resistant powder coatings can be widely used in electrical appliances, metallurgy, petroleum, aviation, chemical industry, medicine, food and other industries and various high-temperature-resistant equipment (such as: barbecue ovens, heaters, high-power lighting, heating pipes, automobiles and motorcycles. appliances, high temperature furnaces, chimneys, etc.). Although it is more environmentally friendly than oil-based coatings, its popularization is limited due to its high cost and the need for high-temperature curing (the minimum curing condition is 230°C × 20 minutes). The development of low-cost room temperature curing high-temperature resistant powder coatings can make environmentally friendly powder coatings replace paints and be applied to the above-mentioned various high-temperature-resistant eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/00C09D163/02C09D167/00C09D7/12C09D5/03
Inventor 孙华强
Owner ZHEJIANG HUACAI NEW MATERIAL CO LTD
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