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Ultraviolet-resistant valve antifouling powdery paint and manufacturing method thereof

A powder coating, UV-resistant technology, used in antifouling/underwater coatings, polyester coatings, coatings, etc., can solve problems such as surface roughness, coating shrinkage, severe orange peel, etc., and achieve good compatibility. , The abrasion rate is uniform, and the coating film is smooth and flat.

Inactive Publication Date: 2015-12-16
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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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The anti-fouling powder coating for valves resistant to ultraviolet light is characterized in that it is made of the following raw materials in parts by weight: high hydroxyl polyester resin 58, hydroxyl acrylic resin 27, HDI trimer 3.7, polyvinylidene fluoride 11. Nano titanium dioxide 1.6, silicone acrylic resin emulsion 12, trioctyl trimellitate 8, mussel shell powder 13, barium sulfate 0.3, diphenyldimethoxysilane 4, polyacrylonitrile fiber 1.8, 2-hydroxy -4-methoxybenzophenone 0.06, dimethylacetamide 32.

[0013] The preparation method comprises the following steps:

[0014] (1) Stir and mix the silicone acrylic resin emulsion and trioctyl trimellitate, raise the temperature to 75-95°C, add clam shell powder, fully stir and condense and reflux for 2-4 hours, ultrasonically disperse evenly, and spray dry to obtain Modified mussel shell powder;

[0015] (2) Calcinate nano-titanium dioxide at 705-810°C for 30-50 minutes, cool to room temperature and ultrasonically s...

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Abstract

The invention discloses ultraviolet-resistant valve antifouling powdery paint. High-hydroxyl polyester resin and hydroxy acrylic resin are taken as main film-forming substances, HDI trimer is taken as a curing agent, the product high / low-temperature resistance and ultraviolet resistance and other performances are improved after modified polyvinylidene fluoride is added, and other effective additives are added, are good in intermiscibility after being modified, are capable of rapidly floating on a paint film surface, and are fixedly attached to the paint film surface through hydroxyl and -NCO, so that pollutants are difficult to attach to the paint film surface, and therefore the paint film possesses durable antifouling performance, a prepared product film is smooth and flat and possesses the advantages of being resistant to ultraviolet, resistant to wear, uniform in abrasion rate, energy-saving, consumption-reducing and the like, and also the paint is free of solvents, does not harm environment and accords with environment protection requirements.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an ultraviolet-resistant valve antifouling powder coating and a manufacturing 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 cavitie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D133/00C09D127/16C09D7/12C09D5/16
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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