Aqueous photocurable coating with ultra low VOC emission and preparation method thereof

A coating and water-based technology, which is applied in the field of water-based non-photoinitiator UV-cured coatings and its preparation, can solve the problems of low performance and pollution, and achieve the effects of impact resistance, good hydrophobicity and oleophobicity, and high flexibility

Inactive Publication Date: 2017-08-22
深圳市泓壹科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of pollution and low performance of existing coating products, the present invention proposes a water-based light-curing coating with ultra-low VOC emissions that can supplement the high-performance requirements of high-end product surface coating and its preparation method

Method used

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  • Aqueous photocurable coating with ultra low VOC emission and preparation method thereof
  • Aqueous photocurable coating with ultra low VOC emission and preparation method thereof
  • Aqueous photocurable coating with ultra low VOC emission and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The coating of the present invention is applied to the screen glass of a mobile phone by a spraying process. Prepare the coating according to the ratio of the following raw materials:

[0034] Synthetic Polyurethane 78%, SiO 2 8%, dispersant 0.8%, wetting agent 0.6%; leveling agent (BYK-3455) 0.5%, anti-scratch agent (BYK-3600) 0.5%, slip agent (BYK-333) 0.5%, balance for deionized water.

[0035] The spraying process is: spraying (manual or automatic) (wet film thickness 25-30μm) - static leveling (heating 55-65 degrees Celsius) for 2-3 minutes - UV (365 nanometer wavelength, 100W / cm, 600J / cm 2 ) 10-20 seconds.

[0036] Performance:

[0037] This formula is mainly used to improve the surface stress and feel of the glass surface by combining the high hardness and flexibility of the coating;

[0038] This recipe prepares the product:

[0039] Surface pencil hardness: 9H; water vertical angle: 105; resistance to steel wool friction: 1kg weight 2000 times;

[0040]...

Embodiment 2

[0042] The paint of the present invention is applied to the panel of household appliances by using a spraying process. Prepare the coating according to the ratio of the following raw materials:

[0043] Synthetic Polyurethane 72%, SiO 2 5%, TiO 2 5%, dispersant 1.0%, wetting agent (BYK-349) 1.5%, leveling agent (BYK-3455) 0.5%, the rest is deionized water.

[0044] Application and performance indicators:

[0045] The formula mainly combines the high hardness, flexibility, and antibacterial properties of the coating, and is used to improve the anti-fouling and self-cleaning effects of the surface of household appliances (such as dishwashers and disinfection cupboards);

[0046] This recipe prepares the product:

[0047] Surface pencil hardness: 9H; water vertical angle: 105; RCA paper tape abrasion resistance test exceeds 10,000 scratches;

[0048] Due to the addition of nano-TiO to the paint 2 , making it have a very strong "super-hydrophilic property", making it diffi...

Embodiment 3

[0050] The coating of the present invention is applied to the surface of artificial stone for cabinets or the surface of 3D printed ceramic tiles by using a spraying process. Prepare the coating according to the ratio of the following raw materials:

[0051] Synthetic polyurethane 85% (this application type uses phenolic formaldehyde instead of viscosity modifier during the synthesis of coating polymers), SiO 2 3%, dispersant 0.8%, wetting agent (BYK-349) 0.7%, leveling agent (BYK-3455) 0.5%, the rest is deionized water.

[0052] Application and performance indicators:

[0053] Surface pencil hardness: 9H; water vertical angle: greater than 97; resistance to steel wool friction: 1kg weight 2500 times, resistance to high-heeled shoes friction and sand vibration friction;

[0054] This formula mainly combines the high transparency, high hardness, flame retardant and high temperature resistance properties of the coating, and self-cleaning properties to improve the defect of low...

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Abstract

The invention discloses aqueous photocurable coating with ultra low VOC emission. The coating comprises the following raw materials in percentages by weight: 72-85% of synthetic polyurethane, 3-10% of an inorganic additive, 0.5-3% of an auxiliary agent, and 10-15% of deionized water. The synthetic polyurethane is a water-soluble hydroxy NCO three-dimensional crossing structure tree form polymer. The invention also discloses a preparation method of the aqueous photocurable coating with ultra low VOC emission. The coating realizes ultra low VOC emission, and is suitable for all materials; the coating does not contain a photoinitiator, and peculiar smell formed by initiator residual paint films is not generated; the coating has ultra high hardness and excellent lacquer protection effect; aqueous environmental protection is realized, in the condition with high hardness performance, high flexibility is provided, bending of paint films whose forward direction is more than 40 degrees and reverse direction is more than 180 degrees is realized, and shock resistance of the paint films is effectively solved.

Description

technical field [0001] The invention relates to the technical field of water-based coating, in particular to an ultra-low VOC emission water-based non-photoinitiator UV curing coating suitable for all materials used for surface coating protection of metal, plastic, glass and other materials and a preparation method thereof. Background technique [0002] At present, whether it is home appliances, digital, toys, handicraft products and other products in daily life, surface coating is an indispensable process. Most of the traditional coatings use solvent-based coatings (commonly known as oil-based coatings). A large amount of organic or inorganic solvents are used in the products, and a large amount of VOC (volatile organic compounds) emissions cause pollution during use; while the market has Most of the performance of some water-based coatings can only meet the needs of wood products or home decoration. At present, most of the so-called water-based coatings are not really com...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C09D7/00C08G18/40C08G18/34
CPCC09D175/04C08G18/348C08G18/40C08K3/36C08K2003/2241C08K2201/011C09D5/1662C09D5/1687C09D7/20
Inventor 夏胜全艾高
Owner 深圳市泓壹科技有限公司
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