Low temperature curing epoxy low-gloss powder coating and preparation method thereof

A powder coating and epoxy technology, applied in powder coatings, epoxy resin coatings, coatings, etc., can solve the problems of increased energy consumption, long curing time, high film forming temperature, etc., and achieve excellent chemical resistance, physical and mechanical Good performance and stable coating gloss

Inactive Publication Date: 2010-06-23
GUANGZHOU QINGTIAN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Whether the early powder coatings are thermoplastic or thermosetting, the film-forming temperature is very high, and generally need to be baked at 180 ° C for 10 to 20 minutes, so that its application is limited to heat-resistant substrates such as metals, and cannot be applied to heat-sensitive substrates. Such as bakelite board, MDF board, etc.
On the other hand, as the curing temperature increases, the energy consumption increases accordingly. According to research, every 10°C decrease in the curing temperature can save about 10% of the coating energy; The residence time in the baking room is not good for production cost and production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The composition and weight ratio of the low-temperature curing epoxy low-gloss powder coating are:

[0035] Epoxy equivalent is 200 parts of epoxy resin of 740g / eq

[0036] 2-Methylimidazole 5.0 parts

[0037] Barium sulfate 80 parts

[0038] Acrylic leveling agent 502 2.4 parts

[0039] Benzoin 1.2 parts

[0040] Breathing agent 703 1.5 parts

[0041] Charge enhancer EDI 1.2 parts

[0042] Carbon black MA-100 3.0 parts

[0043] Preparation:

[0044] (a) Weigh epoxy resin, 2-methylimidazole, barium sulfate, acrylate leveling agent 502, benzoin, breather 703, power enhancer EDI and carbon black MA-100 in proportion, and place them in the mixing tank , fully mixed and crushed for 1 to 5 minutes;

[0045] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 90°C;

[0046] (c) The extruded material is compressed into tablets, cooled, pulverized into a powder with a particle size (equival...

Embodiment 2

[0048] The composition and weight ratio of the low-temperature curing epoxy low-gloss powder coating are:

[0049] Epoxy equivalent is 200 parts of epoxy resin of 740g / eq

[0050] 2-Methylimidazole 5.0 parts

[0051] Methacrylic acid and methyl methacrylate copolymer 10 parts

[0052] Barium sulfate 80 parts

[0053] Acrylic leveling agent 502 2.4 parts

[0054] Benzoin 1.2 parts

[0055] Breathing agent 703 1.5 parts

[0056] Charge enhancer EDI 1.2 parts

[0057] Carbon black MA-100 3.0 parts

[0058] Preparation:

[0059] (a) Weigh epoxy resin, epoxy resin, 2-methylimidazole, methacrylic acid and methyl methacrylate copolymer, barium sulfate, acrylate leveling agent 502, benzoin, breather 703, Put the booster EDI and carbon black MA-100 in the mixing tank, fully mix and crush for 1 to 5 minutes;

[0060] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 90°C;

[0061] (c) The extrude...

Embodiment 3

[0063] The composition and weight ratio of the low-temperature curing epoxy low-gloss powder coating are:

[0064] Epoxy equivalent is 200 parts of epoxy resin of 740g / eq

[0065] 2-Methylimidazole 5.0 parts

[0066] Methacrylic acid and methyl methacrylate copolymer 20 parts

[0067] Barium sulfate 80 parts

[0068] Acrylic leveling agent 502 2.4 parts

[0069] Benzoin 1.2 parts

[0070] Breathing agent 703 1.5 parts

[0071] Charge enhancer EDI 1.2 parts

[0072] Carbon black MA-100 3.0 parts

[0073] Preparation:

[0074] (a) Weigh epoxy resin, epoxy resin, 2-methylimidazole, methacrylic acid and methyl methacrylate copolymer, barium sulfate, acrylate leveling agent 502, benzoin, breather 703, The booster EDI and carbon black MA-100 are placed in the mixing tank, fully mixed and crushed for 30 minutes;

[0075] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 100°C;

[0076] (c) The e...

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PUM

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Abstract

The invention discloses a low temperature curing epoxy low-gloss powder coating, which comprises the following components in part by weight: 100 to 200 parts of epoxy resin, 1 to 10 parts of epoxy curing agent, 0 to 50 parts of delustering agent, 0 to 160 parts of inorganic filling and 0 to 10 parts of addition agent. The invention also discloses a method for preparing the powder coating. The low temperature curing epoxy low-gloss powder coating has the characteristics of simple formula, low curing temperature, stable gloss and free adjustment of a coat, good mechanical properties, good chemical resistance and the like.

Description

technical field [0001] The invention relates to a powder coating, in particular to a low-temperature curing epoxy low-gloss powder coating, and simultaneously the invention also relates to a preparation method of the powder coating. Background technique [0002] Powder coating is a recognized 4E type coating product with high production efficiency, excellent film performance, eco-environmental protection and economy. With people's gradual attention to environmental protection, energy saving and other issues, as well as strict requirements for coating technology, powder coatings have many properties that were considered unattainable in the early 1980s. Powder coatings, like other green coatings, have gained worldwide popularity. improve dramatically. [0003] Epoxy powder coating is a kind of powder coating. It is widely used in anti-corrosion, insulation and other fields due to its advantages of low melt viscosity, good leveling, excellent physical properties, good electric...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/03
Inventor 杨璠胡百九高庆福万惠玲邓祥
Owner GUANGZHOU QINGTIAN INDAL
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