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Antistatic antifouling powder coating for valves

A technology of powder coating and production method, which is applied in the direction of powder coating, conductive coating, coating, etc., can solve the problems of valve application limitation, severe orange peel, rough surface, etc., and achieve the ability to reduce dust absorption and excellent antifouling performance , Good compatibility effect

Inactive Publication Date: 2015-11-11
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the valve body is a casting or forging, its surface is rough, and the current functional powder coating technology for valve surface treatment in the existing technology still has certain defects, resulting in defects such as shrinkage cavities, pinholes, and severe orange peel in the coating, which in turn leads to The application of valves in special fields such as food, biology, pharmaceuticals, chemicals, aerospace and electronics is limited

Method used

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Embodiment Construction

[0012] The antistatic valve antifouling powder coating is characterized in that it is made of the following raw materials in parts by weight: high hydroxyl polyester resin 63, hydroxyl acrylic resin 24, HDI trimer 5, polyvinylidene fluoride 11 , nano titanium dioxide 2.5, nano antimony doped tin dioxide 0.8, methyl isobutyl ketone 9, hexafluorobutyl acrylate 15, montmorillonite 7, ferrocene 0.7, low molecular weight polyethylene wax 6, dimethyl dichlorosilane 3. Dimethylacetamide 27.

[0013] The preparation method comprises the following steps:

[0014] (1) Stir and mix methyl isobutyl ketone and hexafluorobutyl acrylate, heat up to 75-95°C, add montmorillonite, fully stir and condense and reflux for 2-4 hours, ultrasonically disperse evenly, and spray dry to obtain modified Montmorillonite;

[0015] (2) Calcinate nano-titanium dioxide at 670-740°C for 30-50 minutes at high temperature, cool to room temperature and oscillate ultrasonically for 20-40 minutes, add dimethyldic...

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Abstract

The invention discloses an antistatic antifouling powder coating for valves. High hydroxyl polyester resin and hydroxy acrylic resin are chosen as main film-forming materials, HDI trimer serves as a curing agent, modified polyvinylidene fluoride is added to improve the high-low temperature resistance of the antistatic antifouling powder coating, meanwhile, other effective additives are added, and the mixture is modified to achieve good intermiscibility, can quickly float to the surface of a paint film and is fixed on the surface of the paint film through reaction between hydroxy and -NCO, so that pollutants cannot be easily adhered to the surface of the paint film, and accordingly, the paint film has enduring dirt-adhering resisting and self-cleaning properties. The produced antistatic antifouling powder coating for valves is solvent-free and environment-friendly, the paint film is even and smooth in surface, an antistatic role can be played, the dust adsorption capability is reduced, the process is simple and the antifouling performance is superior.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an antistatic valve antifouling powder coating and a preparation method thereof. Background technique [0002] In recent years, the application of powder coatings has surpassed water-based coatings and high-solid coatings in the coatings industry, and has become one of the most widely used coatings in the industry. The powder coating process solves the problems of flammability, explosion and environmental pollution in the traditional paint coating process, and its coating has superior performance, the raw materials can be recycled and reused, and the coating process is simple. It can be widely used in the coating of valve shells. Since the valve body is a casting or forging, its surface is rough, and the current functional powder coating technology for valve surface treatment in the existing technology still has certain defects, resulting in defects such as shrinkage cavities, pinholes, ...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D127/16C09D5/03C09D5/24C09D7/12
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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