A kind of PVDF metal powder coating for metal surface and preparation method thereof

A metal powder and metal surface technology, applied in the field of PVDF metal powder coating and its preparation, can solve problems such as no specific solutions are proposed, and achieve the effect of remarkable metal effect, uniform bonding and simplified process

Active Publication Date: 2021-12-21
WESDON RIVER POWDER PAINT SCI RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the whole, in the field of preparing powder coatings, especially in the field of preparing PVDF metal powder coatings, there are still many practical problems to be dealt with in practical applications that have not yet proposed specific solutions.

Method used

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  • A kind of PVDF metal powder coating for metal surface and preparation method thereof
  • A kind of PVDF metal powder coating for metal surface and preparation method thereof
  • A kind of PVDF metal powder coating for metal surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A PVDF metal powder coating for metal surfaces, the PVDF metal powder coating for metal surfaces is mixed with resin powder A and resin powder B according to the weight percentage of 7:3, and then by adding polymer glue and coating aluminum powder Prepared;

[0042] The added amount of the polymer glue is 10.0% of the total resin weight percentage;

[0043] The added amount of the coated aluminum powder is 20.0% by weight of the total resin.

[0044] Wherein, the resin powder A is composed of PVDF resin; the resin powder B is composed of thermoplastic acrylic resin; the PVDF resin is a homopolymer or copolymer of vinylidene fluoride monomer; the thermoplastic acrylic resin is MMA / EA copolymer; the polymer glue is a copolymer of methacrylate and ethylenic monomer; the coated aluminum powder is a mixture of PVDF resin and aluminum powder.

[0045] In the present invention, the resin powder A and the resin powder B are ground by a refiner, and the refiner is provided wi...

Embodiment 2

[0056] A PVDF metal powder coating for metal surfaces, the PVDF metal powder coating for metal surfaces is mixed with resin powder A and resin powder B according to the weight percentage of 3:7, and then by adding polymer glue and coating aluminum powder Prepared;

[0057] The added amount of the polymer glue is 5.0% of the total resin weight percentage;

[0058] The added amount of the coated aluminum powder is 20.0% by weight of the total resin.

[0059] Wherein, the resin powder A is composed of PVDF resin; the resin powder B is composed of thermoplastic acrylic resin; the PVDF resin is a homopolymer or copolymer of vinylidene fluoride monomer; the thermoplastic acrylic resin is MMA / EA copolymer; the polymer glue is a copolymer of methacrylate and ethylenic monomer; the coated aluminum powder is a mixture of PVDF resin and aluminum powder.

[0060] In the present invention, the resin powder A and the resin powder B are ground by a refiner, and the refiner is provided wit...

Embodiment 3

[0071] A PVDF metal powder coating for metal surfaces, the PVDF metal powder coating for metal surfaces is mixed with resin powder A and resin powder B according to the weight percentage of 7:3, and then by adding polymer glue and coating aluminum powder Prepared;

[0072] The added amount of the polymer glue is 8.0% of the total resin weight percent;

[0073] The added amount of the coated aluminum powder is 20.0% by weight of the total resin.

[0074] Wherein, the resin powder A is composed of PVDF resin; the resin powder B is composed of thermoplastic acrylic resin; the PVDF resin is a homopolymer or copolymer of vinylidene fluoride monomer; the thermoplastic acrylic resin is MMA / EA copolymer; the polymer glue is a copolymer of methacrylate and ethylenic monomer; the coated aluminum powder is a mixture of PVDF resin and aluminum powder.

[0075] In the present invention, the resin powder A and the resin powder B are ground by a refiner, and the refiner is provided with a...

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PUM

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Abstract

The invention provides a PVDF metal powder coating for metal surfaces and a preparation method thereof. The thermoplastic acrylic resin and PVDF resin are ground by a refiner, and then mixed with a polymer and coated aluminum powder to prepare a powder coating. The synergy of the components Under the action of the powder coating, it can solve the problem of uneven spraying caused by the difference in chargeability between the components during the electrostatic spraying process; and a temperature control device is installed in the refiner to avoid excessive bonding of the powder during the grinding process, so that the grinding out The resin powder A and the resin powder B are microscopically irregular and fibrous, which greatly increases the probability of the two resin powders being entangled with each other in the reactor. In addition, the PVDF resin is used in the present invention to coat the aluminum powder and then add it to the reaction kettle, which can effectively solve the problem that the aluminum powder is oxidized or corroded when the powder coating is formed, and then obtain uniform bonding and excellent coating performance. Powder coating with high transparency and outstanding metallic effect.

Description

technical field [0001] The invention relates to the field of powder coatings, in particular to a PVDF metal powder coating for metal surfaces and a preparation method thereof. Background technique [0002] Powder coatings are usually sprayed by powder electrostatic guns, friction guns or fluidized bed dipping to make them adhere to the substrate, usually the surface of an alloy, and then form a coating film by heating or radiation curing, which has good decorative and protective effects. Conventional powder coatings can prolong the service life of the object to be coated under normal conditions, but many powder coatings in the prior art are easy to absorb water and form white spots on the surface, which affects the use and appearance of the powder coating performance. In addition, when using PVDF resin to prepare PVDF powder coatings, because PVDF resin is a thermoplastic resin with high toughness, it cannot be crushed at room temperature, resulting in high production costs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C09D133/12C09D5/03C09D7/62
CPCC09D127/16C09D133/12C09D5/033C08L2205/03C08L2201/10C08K2003/0812C08L33/12C08K9/10C08K3/08C08L27/16
Inventor 魏育福吴严明黄焯轩南仁植蔡劲树
Owner WESDON RIVER POWDER PAINT SCI RES CO LTD
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