Fireproof and flame-retardant type sand surface waterborne polyurethane finishing coat and a preparation method thereof

A water-based polyurethane, fire-resistant and flame-retardant technology, applied in polyurea/polyurethane coatings, fire-resistant coatings, coatings, etc., can solve the problems of operator injury, increased risk of fire and explosion, pollution of the environment, etc., and achieve enhanced weather resistance , High fullness of the coating, the effect of increasing the hardness

Inactive Publication Date: 2019-06-07
中山蓝海洋水性涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The release of these organic solvents into the atmosphere not only causes great harm to operators, but also pollutes the environment, increases the risk of fire and explosion in construction sites, and causes waste of energy and resources.

Method used

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  • Fireproof and flame-retardant type sand surface waterborne polyurethane finishing coat and a preparation method thereof
  • Fireproof and flame-retardant type sand surface waterborne polyurethane finishing coat and a preparation method thereof
  • Fireproof and flame-retardant type sand surface waterborne polyurethane finishing coat and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0076] A kind of preparation method of above-mentioned fire retardant type sand surface waterborne polyurethane finish paint, comprises the following steps:

[0077] S1, preparation of component A

[0078] S1.1. Add water, water-based acrylic dispersion hydroxyl resin, halogen-free flame-retardant water-based polyurethane resin, defoamer, dispersant and wetting agent in the dispersion tank according to mass percentage, and carry out medium-speed dispersion, medium-speed dispersion The speed is 600~800r / min;

[0079] S1.2. Slowly add nano-titanium dioxide, nano-zinc borate, magnesium hydroxide, aluminum hydroxide, calcined kaolin, sand flour and water-based wax powder, add water to rinse the cylinder wall, and disperse at high speed for 20-50 minutes until the fineness is ≤40 microns. Add leveling agent, thickener, preservative and antifungal agent at medium and low dispersing speed. The speed is 1000-1500r / min, and the fineness and viscosity of the finished product are teste...

Embodiment 1

[0086] A kind of fire-proof and flame-retardant sand surface water-based polyurethane topcoat comprises the following components by mass percentage:

[0087] A component (main paint)

[0088]

[0089] B component (curing agent)

[0090] Hydrophilic aliphatic polyisocyanate 40.0%

[0091] Lipophilic aliphatic polyisocyanate 36.0%

[0092] Propylene Glycol Diacetate 24.0%

[0093] Component A (main paint) and component B (curing agent) are mixed according to the NCO / OH equivalent ratio of n(-NCO):n(-OH)=1.2~1.3, that is, the -NCO functional group in component A and The equivalent molar ratio of -OH functional groups in component B is 1.2-1.3.

[0094] A kind of preparation method of above-mentioned fire retardant type sand surface waterborne polyurethane finish paint, comprises the following steps:

[0095] S1, preparation of component A

[0096] S1.1. Add water, water-based acrylic dispersion hydroxyl resin, halogen-free flame-retardant water-based polyurethane resin, ...

Embodiment 2

[0105] A kind of fire-proof and flame-retardant sand surface water-based polyurethane topcoat comprises the following components by mass percentage:

[0106] A component (main paint)

[0107]

[0108] B component (curing agent)

[0109] Hydrophilic aliphatic polyisocyanate 42.0%

[0110] Lipophilic aliphatic polyisocyanate 35.0%

[0111] Propylene Glycol Diacetate 23.0%

[0112] Component A (main paint) and component B (curing agent) are mixed according to the NCO / OH equivalent ratio of n(-NCO):n(-OH)=1.2~1.3, that is, the -NCO functional group in component A and The equivalent molar ratio of -OH functional groups in component B is 1.2-1.3.

[0113] A kind of preparation method of above-mentioned fire retardant type sand surface waterborne polyurethane finish paint, comprises the following steps:

[0114] S1, preparation of component A

[0115] S1.1. Add water, water-based acrylic dispersion hydroxyl resin, halogen-free flame-retardant water-based polyurethane resin, ...

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Abstract

The invention provides a fireproof and flame-retardant type sand surface waterborne polyurethane finishing coat. Main paint is prepared from aqueous acrylic dispersion hydroxyl resin and halogen-freeflame-retardant aqueous polyurethane resin as matrix resin with addition of a flame-retardant material compounded by nano titanium dioxide, nano zinc borate, magnesium hydroxide, aluminum hydroxide and calcined kaolin, as well as sand surface powder and aqueous wax powder. A curing agent is prepared by compounding hydrophilic aliphatic polyisocyanate, lipophilic aliphatic polyisocyanate and propylene glycol diacetate. The equivalent molar ratio of the -NCO functional group in the main paint to the -OH functional group in the curing agent is 1.2-1.3. The invention further provides a preparationmethod of the fireproof flame-retardant type sand surface waterborne polyurethane finishing coat. The paint film has the advantages of excellent fireproof and flame-retardant properties, high hardness, excellent wear resistance, strong scratch resistance, good weather resistance and beautiful paint film sand surface effect, and can be widely applied to surface coating of rail transit vehicle bodies, interiors, underframes, frameworks and various accessories.

Description

technical field [0001] The invention relates to the field of water-based polyurethane coatings, in particular to a fire-proof and flame-retardant sand surface water-based polyurethane topcoat and a preparation method thereof, in particular to a fire-proof and flame-retardant sand surface water-based polyurethane topcoat for rail transit vehicles and a preparation method thereof. Background technique [0002] With the rapid development of the economy and the continuous improvement of people's living standards, rail transit has developed rapidly and has become a key area of ​​investment in my country's infrastructure construction in the next few years. According to the "Medium and Long-Term Railway Network Planning" issued by the Ministry of Railways, trillions of funds will be invested in the construction of railways and equipment in the next few years, including more than 20,000 kilometers of new railway networks and more than 7,000 kilometers of high-speed railway networks. ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/18C09D7/61C09D7/65C08G18/62
Inventor 陈小文蒋建平蒋建伟
Owner 中山蓝海洋水性涂料有限公司
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