A reversible temperature-indicating powder coating and its preparation method and application method

A technology of powder coating and temperature indication, applied in the field of coatings, can solve problems such as solvent environmental pollution, and achieve the effects of prolonging the life of discoloration, high color retention, good decoration and weather resistance

Inactive Publication Date: 2016-02-10
TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is a solvent-type temperature-indicating paint, which has a certain temperature-indicating function, but the volatilization of the solvent causes certain environmental pollution

Method used

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  • A reversible temperature-indicating powder coating and its preparation method and application method
  • A reversible temperature-indicating powder coating and its preparation method and application method
  • A reversible temperature-indicating powder coating and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A reversible temperature-indicating powder coating, its raw material constituents and their weight parts are as follows:

[0031]

[0032] The preparation method of the above reversible temperature-indicating powder coating has the following steps:

[0033] The above materials are added to the high-speed mixer, and then added to the extruder after dry mixing. The temperature in the first zone is 80-90℃, and the extrusion temperature in the second zone is 110-120℃ for melting, mixing, extruding, cooling, Tablets are crushed, classified, sieved, and packaged by a pulverizer to become a powder coating product with a suitable particle size (usually 32-36um), that is, a reversible temperature-indicating powder coating.

[0034] The use method of the above-mentioned reversible temperature-indicating powder coating is as follows:

[0035] Spray the reversible temperature-indicating powder coating on the metal surface, or spray on the primer, and bake at 180°C for 15 minutes, especiall...

Embodiment 2

[0037] A reversible temperature-indicating powder coating, its raw material constituents and their weight parts are as follows:

[0038]

[0039] The preparation method and application method of the above-mentioned reversible temperature-indicating powder coating are the same as in Example 1.

Embodiment 3

[0041] A reversible temperature-indicating powder coating, its raw material constituents and their weight parts are as follows:

[0042]

[0043] Actual application effect and test situation of the powder coating of the present invention:

[0044] In order to test the practical application effect of the present invention, the specific operation is as follows: spray the powder coating prepared in Example 1 on the phosphated metal surface, put it in a high-temperature oven and bake it at 180°C / 15-20 minutes After the solidification is complete, take out the sample and cool it to obtain sample A. Use the powder coatings prepared in Examples 2 and 3 to make samples. The production method is the same as that in Example 1, and sample B and sample C are obtained. Mainly compare the reversible temperature of A, B and C.

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Abstract

The invention relates to a reversible temperature indicating powder coating, comprising the following components in parts by weight: 70-80 parts of glycidyl methacrylate (GMA) acrylic resin, 15-25 parts of dodecanedioic acid, 0.6-1 part of flatting agent, 0.2-0.4 parts of anti-yellowing benzoin, 2-13 parts of reversible thermochromic pigment and 0.01-5 parts of other pigments except for the reversible thermochromic pigment. The powder coating disclosed by the invention is exquisite in appearance, has the functionality of indicating temperature, displays a specific color at a certain temperature, and achieves instant color change when reaching a color change temperature; the traditional solvent color-change coating is abandoned under the condition that the environmental requirements are gradually increased; a powder coating form free of a solvent to release is adopted, so that the powder coating has higher color retention, is longer in service life, and has excellent decorative property and weather fastness and the hardness reaching 2H-3H; meanwhile, the powder coating can be applied outside, and also can be applied inside; the application range is expanded, and the production cost of an enterprise is reduced.

Description

Technical field [0001] The invention belongs to the technical field of coatings, and relates to powder coatings, in particular to a reversible temperature-indicating powder coating and a preparation method and use method thereof. Background technique [0002] Powder coating and its coating technology is a new process and technology that has developed rapidly in recent years. It has the characteristics of saving energy and resources, reducing environmental pollution, simple process, easy automation, durable coating, and recyclable powder. It has caused the world The coating industry of all countries attaches great importance to it. With the extensive application and in-depth research of powder coatings, the performance of powder coatings has been improving and improving, not only its decorative effect requirements are getting higher and higher, its functional requirements are also increasing, and the heavy-duty anti-corrosion powder for pipelines, Antibacterial powder, antistatic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/14C09D7/06C09D7/12C09D5/03C09D5/26C09D7/47
Inventor 陈超王焱王浩
Owner TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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