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Low-gloss bending-resistant heat transfer printing powder coating used for section aluminum and a preparing method thereof

A powder coating, low-gloss technology, applied in powder coatings, polyester coatings, coatings, etc., can solve problems such as unsatisfactory, low gloss, mechanical properties of coating films, and decreased storage stability of weather-resistant powder coatings, so as to avoid Effects of residual paper printing, reducing gloss, and improving transfer effect

Active Publication Date: 2017-06-20
广东华江粉末科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional thermal transfer powder coatings, especially those with low gloss, due to the addition of too much physical or chemical matting agent, lead to a sharp decline in the mechanical properties, weather resistance and storage stability of the powder coating, which cannot meet many requirements. Requirements for aluminum profiles for outdoor use, or requirements for some aluminum alloy doors that require stamping

Method used

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  • Low-gloss bending-resistant heat transfer printing powder coating used for section aluminum and a preparing method thereof
  • Low-gloss bending-resistant heat transfer printing powder coating used for section aluminum and a preparing method thereof
  • Low-gloss bending-resistant heat transfer printing powder coating used for section aluminum and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare the low-gloss anti-bending heat-transfer powder coating for aluminum profile according to the following steps:

[0036] (1) According to the following component A formula, put the raw materials into the mixing tank according to their corresponding mass percentages for pre-mixing, and the time is 3-4 minutes;

[0037] A component:

[0038]

[0039] Wherein, the saturated carboxyl-terminated polyester resin A is a high-toughness carboxyl polyester resin with an acid value of 46 mgKOH / g, a viscosity of 7500 mPa·s at 200°C, and a glass transition temperature of 67°C; The median particle size of extinction barium is 5.8μm;

[0040] (2) Use a twin-screw extruder to melt, knead, and disperse the premixed raw materials evenly and extrude them. The frequency of the screw is 30Hz; then tableting and crushing;

[0041] (3) The crushed material is graded and crushed with an ACM mill, the frequency of the main mill is 40 Hz, and the frequency of the auxiliary mill is 3...

Embodiment 2

[0056] Prepare the low-gloss anti-bending heat-transfer powder coating for aluminum profile according to the following steps:

[0057] (1) According to the following component A formula, put the raw materials into the mixing tank according to their corresponding mass percentages for pre-mixing, and the time is 3-4 minutes;

[0058] A component:

[0059]

[0060]Wherein, the saturated carboxyl-terminated polyester resin A is a high-toughness carboxyl polyester resin with an acid value of 47mgKOH / g, a viscosity of 7700mPa·s at 200°C, and a glass transition temperature of 67°C; The median particle size of extinction barium is 5.7μm;

[0061] (2) Use a twin-screw extruder to melt, knead, and disperse the premixed raw materials evenly and extrude them. The output screw frequency is 33Hz; then perform tableting and crushing;

[0062] (3) The crushed material is graded and crushed with an ACM mill, the frequency of the main mill is 45Hz, and the frequency of the auxiliary mill ...

Embodiment 3

[0076] Prepare the low-gloss anti-bending heat-transfer powder coating for aluminum profile according to the following steps:

[0077] (1) According to the following component A formula, put the raw materials into the mixing tank according to their corresponding mass percentages for pre-mixing, and the time is 3-4 minutes;

[0078] A component:

[0079]

[0080]

[0081] Wherein, the saturated carboxyl-terminated polyester resin A is a high-toughness carboxyl polyester resin with an acid value of 50 mgKOH / g, a viscosity of 7800 mPa·s at 200°C, and a glass transition temperature of 67°C; The median particle size of extinction barium is 5.5μm;

[0082] (2) Use a twin-screw extruder to melt, knead, and disperse the premixed raw materials evenly and extrude them. The frequency of the screw is 40Hz; then tableting and crushing;

[0083] (3) The crushed material is graded and crushed with an ACM mill, the frequency of the main mill is 40Hz, and the frequency of the auxiliar...

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Abstract

The invention relates to low-gloss bending-resistant heat transfer printing powder coating used for section aluminum and a preparing method thereof. The powder coating is prepared by mixing an A component and a B component. Raw materials of the A component include saturated carboxyl-ended polyester resin A, a TGIC curing agent, enclosed type isocyanate, extinction barium sulfate, a leveling agent, a brightening agent, benzoin, wax powder, a wax-based flatting agent, rutile type titanium dioxide, carbon black and iron oxide yellow. Raw materials of the B component include saturated carboxyl-ended polyester resin B, a TGIC curing agent, enclosed type isocyanate, extinction barium sulfate, a leveling agent, a brightening agent, benzoin, wax powder, rutile type titanium dioxide, carbon black and iron oxide yellow. Coating films of the powder coating have significant characteristics of extremely good storage stability, bending resistance and impact resistance, excellent whether resistance, high decoration performance, and the like.

Description

technical field [0001] The invention belongs to the field of thermal transfer printing powder, and in particular relates to a low-gloss anti-bending thermal transfer powder coating for aluminum profiles and a preparation method thereof. Background technique [0002] Thermal transfer powder coating, as an environmentally friendly and highly decorative coating, has been widely used in the field of aluminum profiles. However, traditional thermal transfer powder coatings, especially those with low gloss, due to the addition of too much physical or chemical matting agent, lead to a sharp decline in the mechanical properties, weather resistance and storage stability of the powder coating, which cannot meet many requirements. The requirements of aluminum profiles for outdoor use, or the requirements of some aluminum alloy doors that need to be stamped. Contents of the invention [0003] In order to solve the shortcomings and insufficiencies of the prior art, the primary purpose ...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D5/03C09D7/12
CPCC08L2205/025C08L2205/035C09D5/033C09D167/00C08L67/00C08L23/06C08L27/18C08K13/02C08K5/29
Inventor 魏育福蔡劲树刘飞方胥庚洪贤波
Owner 广东华江粉末科技有限公司
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