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A kind of powder coating for vacuum coating bottom layer of metal substrate and preparation method thereof

A technology of vacuum coating and powder coating, applied in the field of coatings, can solve the problems of poor adhesion of vacuum coating and poor lighting, and achieve the effects of good adhesion, high brightness and excellent anti-corrosion performance

Inactive Publication Date: 2015-09-16
TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of poor vacuum coating adhesion and poor lighting caused by the use of ordinary powder coatings on the bottom layer of vacuum coating on metal substrates, and to provide a powder coating for the bottom layer of vacuum coating on metal substrates. Excellent adhesion of the paint, no release of small molecules, no effect on the adhesion of the vacuum coating and the bottom layer, and can ensure the excellent lighting of the vacuum coating

Method used

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  • A kind of powder coating for vacuum coating bottom layer of metal substrate and preparation method thereof
  • A kind of powder coating for vacuum coating bottom layer of metal substrate and preparation method thereof
  • A kind of powder coating for vacuum coating bottom layer of metal substrate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of powder paint for vacuum coating bottom layer of metal substrate, its raw material composition and its weight are respectively:

[0044]

[0045] The preparation method of the powder coating for the vacuum coating bottom layer of the above-mentioned metal substrate, the steps are as follows:

[0046]Add the above materials to the high-speed mixer, and then add them to the extruder after dry mixing. The temperature in the first zone is 80-90°C, and the extrusion temperature in the second zone is 110-120°C for melting, mixing, extrusion, cooling, Tablets, crushed by a pulverizer, graded, sieved, and packaged to become a powder coating product with a suitable particle size. Finally, it is sprayed on the metal surface and baked at 180°C for 15 minutes to ensure that the coating film is completely cured and no secondary coatings will occur. After curing, the powder coating for the bottom layer of vacuum coating on the metal substrate is obtained.

Embodiment 2

[0048] A kind of powder paint for vacuum coating bottom layer of metal substrate, its raw material composition and its weight are respectively:

[0049]

[0050] The preparation method of the powder coating for the vacuum coating bottom layer of the above-mentioned metal substrate, the steps are the same as in Example 1.

Embodiment 3

[0052] A kind of powder paint for vacuum coating bottom layer of metal substrate, its raw material composition and its weight are respectively:

[0053]

[0054] The preparation method of the powder coating for the vacuum coating bottom layer of the above-mentioned metal substrate, the steps are the same as in Example 1.

[0055] Practical application effect and test situation of powder coating of the present invention:

[0056] In order to check the practical application effect of the present invention, the specific operation is as follows: spray the powder coating obtained in Example 1 on the metal surface through phosphating treatment, put it into a high-temperature oven and bake it in 180°C / 15-20 minutes to make it After the solidification is complete, take out the sample to cool down, then spray the liquid paint, and then put it in an oven and bake it at 138°C for 45 minutes. The powder coating prepared in Example 2 was finally obtained as a plated sample B according ...

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Abstract

The invention relates to a powder coating for a vacuum coating and a bottom layer of a metal substrate. The powder coating comprises the following components in parts by weight: 60-70 parts of polyester resin, 4-5 parts of curing agent, 0.02-0.04 part of catalyst, 30-40 parts of pigment and filler and 1.5-2.5 parts of additive composition. The powder coating has excellent antiseptic property and super adhesive force with liquid pain, does not give off small molecules, has no influence on the adhesive force of the vacuum coating and the bottom layer and provides a guarantee for firmly attaching the vacuum coating to a liquid paint film; and meanwhile, the powder coating has the advantages of being environment-friendly and energy-saving, realizing the low-temperature curing, having excellent anti-corrosive property, good specular reflection effect, fine and smooth surface, very good decorative effect, excellent day lighting property and excellent quality, being capable of ensuring the high brightness of the vacuum coating and having no phenomena of falling and flooding and can be used for spraying the substrate before the liquid paint is sprayed on the vacuum coating of the metal substrate.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a weather-resistant heavy-duty anti-corrosion powder coating, in particular to a powder coating for a metal substrate vacuum coating bottom layer and a preparation method thereof. Background technique [0002] Vacuum coating technology first appeared in the 1930s, and industrial mass production began in the 1980s. Compared with traditional electroplating methods, vacuum coating has low energy consumption, non-toxic, no waste liquid, low pollution, low cost, and decorative Good effect and other advantages, widely used in electronic products, various lamps, car reflectors, children's toys, accessories, handicrafts, packaging supplies and other surface decoration fields. Vacuum coating refers to the deposition of a certain metal or metal compound on the surface of a material (usually a non-metallic material) in the form of vapor in a vacuum environment, which belongs to the physical vapor depo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D5/08C09D5/03C09D7/12
Inventor 陈超
Owner TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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