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Ultraviolet radiation resistant montmorillonite intercalation modified polyurethane paint

A polyurethane coating, UV-resistant technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of difficult and uniform dispersion of organic matter, reduced coating film performance, large surface energy, etc. The effect of mechanical properties, strong scattering ability

Inactive Publication Date: 2018-09-14
郭平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of nano-modified coatings, due to the small particle size, large surface area and large surface energy of nanoparticles, it is easy to agglomerate, nano-TiO 2 Particles have strong polarity and often exhibit hydrophilic and oleophobic properties. It is difficult to disperse evenly in organic matter, and has no binding force with the base material, which is easy to cause defects and reduce the performance of the coating film.

Method used

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  • Ultraviolet radiation resistant montmorillonite intercalation modified polyurethane paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A montmorillonite intercalation modified polyurethane coating resistant to ultraviolet radiation is prepared by the following steps:

[0022] (1) Modified nano SiOx: Disperse nano SiOx uniformly in deionized water to prepare a 5.5% nano SiOx dispersion liquid, then add 0.3% alkanolamide by mass to the nano SiOx dispersion, and heat to At 80°C, add 0.12% dicumyl peroxide with nano-SiOx dispersion mass, stir at 1500r / min for 2 hours, then cool to room temperature naturally, filter with suction, dry to constant weight, and then use absolute ethanol Soak for 10 minutes, filter again, and dry to constant weight to get;

[0023] (2) Titanium dioxide / isocyanate compound: add 20g of titanium dioxide treated with coupling agent to 500mL of N,N-dimethylformamide, stir at 1800r / min for 30min, then heat to 110℃, keep for 15min , Then add 150g of isocyanate, continue stirring at 1800r / min for 2 hours, adjust the temperature to 10°C, keep holding for 30min, then remove N,N-dimethylformam...

Embodiment 2

[0033] A montmorillonite intercalation modified polyurethane coating resistant to ultraviolet radiation is prepared by the following steps:

[0034] (1) Modified nano SiOx: Disperse nano SiOx uniformly in deionized water to prepare a nano SiOx dispersion with a mass fraction of 6.5%, then add 0.5% alkanolamide by mass to the nano SiOx dispersion, and heat to At 90℃, add 0.15% dicumyl peroxide with nano-SiOx dispersion mass, stir at 1500r / min for 2 hours, then cool to room temperature naturally, filter with suction, dry to constant weight, and then use absolute ethanol Soak for 10 minutes, filter again, and dry to constant weight to get;

[0035] (2) Titanium dioxide / isocyanate compound: Add 30g of titanium dioxide treated with coupling agent to 500mL of N,N-dimethylformamide, stir at 1800r / min for 30min, then heat to 110℃, keep for 15min , Then add 180g of isocyanate, continue to stir at 1800r / min for 3 hours, adjust the temperature to 10°C, keep holding for 30min, then remove N,N...

Embodiment 3

[0045] A montmorillonite intercalation modified polyurethane coating resistant to ultraviolet radiation is prepared by the following steps:

[0046] (1) Modified nano SiOx: Disperse nano SiOx uniformly in deionized water to prepare a 6.0% nano SiOx dispersion liquid, then add 0.4% alkanolamide by mass to the nano SiOx dispersion, and heat to At 85°C, add 0.13% dicumyl peroxide of nano-SiOx dispersion mass, stir at 1500r / min for 2 hours, then cool to room temperature naturally, filter with suction, dry to constant weight, and then use absolute ethanol Soak for 10 minutes, filter again, and dry to constant weight to get;

[0047] (2) Titanium dioxide / isocyanate compound: add 25g of titanium dioxide treated with coupling agent to 500mL of N,N-dimethylformamide, stir at 1800r / min for 30min, then heat to 110℃, keep for 15min , Then add 160g of isocyanate, continue stirring at 1800r / min for 2.5 hours, adjust the temperature to 10°C, keep holding for 30min, then remove N,N-dimethylformam...

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Abstract

The invention discloses ultraviolet radiation resistant montmorillonite intercalation modified polyurethane paint, and relates to the technical field of special paint. The paint is prepared through the following steps of (1) modifying nanometer SiOx; (2) preparing a titanium dioxide / isocyanate compound; (3) preparing finished product paint. The prepared ultraviolet radiation resistant montmorillonite intercalation modified polyurethane paint has good ultraviolet radiation resistant performance; meanwhile, strong adhesive force, high hydrophobicity and high hardness are realized; the coating film density is high; the comprehensive performance is excellent; the service life is greatly prolonged.

Description

Technical field [0001] The invention belongs to the technical field of special coatings, and specifically relates to a montmorillonite intercalation modified polyurethane coating resistant to ultraviolet radiation. Background technique [0002] At present, polyurethane coatings are a relatively common type of coatings, which can be divided into two-component polyurethane coatings and one-component polyurethane coatings. Two-component polyurethane coatings are generally composed of isocyanate prepolymers (also called low-molecular-weight urethane polymers) and hydroxyl-containing resins, usually called curing agent components and main agent components. There are many varieties of this kind of coatings, and the application range is also very wide. According to the different hydroxyl-containing components, they can be divided into acrylic polyurethane, alkyd polyurethane, polyester polyurethane, polyether polyurethane, epoxy polyurethane and other varieties. Generally, it has good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/38C08G18/34C08G18/32
CPCC08G18/3206C08G18/348C08G18/3895C08G18/3897C09D175/04
Inventor 郭平
Owner 郭平
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