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Water-based polyurethane paint containing polyether glycol/nano TiO2 hybrid material

A polyether polyol, water-based polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem of difficulty in improving the compatibility of nano-titanium dioxide and polyurethane, achieve excellent UV resistance, improve compatibility, Reduce the effect of aggregation

Active Publication Date: 2015-03-11
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods can reduce the agglomeration of nanoparticles to a certain extent, it is difficult to improve the compatibility of nano titanium dioxide and polyurethane

Method used

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  • Water-based polyurethane paint containing polyether glycol/nano TiO2 hybrid material
  • Water-based polyurethane paint containing polyether glycol/nano TiO2 hybrid material
  • Water-based polyurethane paint containing polyether glycol/nano TiO2 hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Preparation of polyoxypropylene ether triol N330 / nano titanium dioxide hybrid material

[0058] a. Under the protection of nitrogen, add 10g of 3-isocyanatopropyltrimethoxysilane to 146g of polyoxypropylene ether triol N330, 0.5g of stannous octoate, and stir and react at 70°C for 6h to obtain a polymer A .

[0059] b. Disperse 10 g of nano-titanium dioxide in 100 g of toluene and sonicate for 0.5 h to obtain a nano-titanium dioxide dispersion.

[0060] c. 16g of polymer A, 11g of nano-titanium dioxide dispersion, 1g of distilled water, and 100g of toluene were stirred and reacted at 60°C for 6 hours, and then rotary evaporated at 70°C to remove toluene and water to obtain polyoxypropylene ether trihydric alcohol N330 / Nano-titanium dioxide hybrid materials.

[0061] (2) Preparation of water-based polyurethane coatings containing polyoxypropylene ether triol N330 / nano-titanium dioxide hybrid materials

[0062] 25g of polyoxypropylene ether triol N330 / nano-titaniu...

Embodiment 2

[0064] (1) Preparation of polyoxypropylene ether triol JH-3030 / nano titanium dioxide hybrid material

[0065] a. Under the protection of nitrogen, add 10g of 3-isocyanatopropyltrimethoxysilane to 146g of polyoxypropylene ether trihydric alcohol JH-3030, 0.05g of dibutyltin dilaurate, and stir at 75°C for 4h. Polymer A was obtained.

[0066] b. Disperse 10 g of nano-titanium dioxide in 100 g of toluene and sonicate for 1 hour to obtain a nano-titanium dioxide dispersion.

[0067] c. 50g of polymer A, 30g of nano-titanium dioxide dispersion, 4g of distilled water, and 200g of toluene were stirred and reacted at 70°C for 6 hours, and then rotary evaporated at 70°C to remove toluene and water to obtain polyoxypropylene ether trihydric alcohol JH- 3030 / nano titanium dioxide hybrid material.

[0068] (2) Preparation of water-based polyurethane coating containing polyoxypropylene ether triol JH-3030 / nano titanium dioxide hybrid material

[0069] 75g polyoxypropylene ether triol JH...

Embodiment 3

[0071] (1) Preparation of polyoxypropylene ether triol MN-3050 / nano titanium dioxide hybrid material

[0072] a. Under the protection of nitrogen, add 10g of 3-isocyanatopropyltrimethoxysilane to 146g of polyoxypropylene ether triol MN-3050, 0.3g of lead octoate, and stir at 80°C for 4h to obtain polymer A.

[0073] b. Disperse 10 g of nano-titanium dioxide in 100 g of toluene and sonicate for 2 hours to obtain a nano-titanium dioxide dispersion.

[0074] c. 32g of polymer A, 22g of nano-titanium dioxide dispersion, 2g of distilled water, and 150g of toluene were stirred and reacted at 60°C for 8 hours, and then rotary evaporated at 70°C to remove toluene and water to obtain polyoxypropylene ether trihydric alcohol MN- 3050 / nano titanium dioxide hybrid material.

[0075] (2) Preparation of waterborne polyurethane coatings containing polyoxypropylene ether triol MN-3050 / nano-titanium dioxide hybrid materials

[0076] 50g of polyoxypropylene ether triol MN-3050 / nano-titanium d...

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Abstract

The invention belongs to the technical field of water-based polyurethane paints, and discloses a water-based polyurethane paint containing a polyether glycol / nano TiO2 hybrid material, and a preparation method and application thereof. The paint comprises the following components in parts by mass: 25-75 parts of polyether glycol / nano titanium dioxide hybrid material, 15-65 parts of diisocyanate, 100 parts of polyether glycol, 8-16 parts of polyhydroxy-carboxylic acid, 0.05-0.5 part of organo-metallic catalyst, 0.5-10 parts of crosslinking agent, 6.2-12.4 parts of neutralizer, 1-8 parts of chain extender and 0.2-2.0 parts of defoaming agent. The paint enhances the compatibility between the nano titanium dioxide and polyurethane base, has the advantages of favorable thermal properties, favorable mechanical properties, favorable wear resistance and excellent ultraviolet resistance, and can be widely used in the fields of architectural paints, automobile paints, wood paints, electrodeposition paints, paper conditioning paints, glass fiber paints, electrophoretic paints and the like.

Description

technical field [0001] The invention belongs to the technical field of waterborne polyurethane coatings, in particular to a polyether polyol / nano-TiO 2 Water-based polyurethane coatings of hybrid materials and their preparation methods and applications. Background technique [0002] Nano-titanium dioxide has the characteristics of small particle size, large specific surface area, and high surface energy, so it can exhibit special properties such as surface and interface effects, small size effects, quantum size effects, and macroscopic quantum tunneling effects unique to nanoparticles. In addition, nano-titanium dioxide also has excellent properties such as absorbing ultraviolet light, sterilization, corrosion resistance, and self-cleaning. Therefore, introducing it into the polymer can greatly improve the mechanical properties, aging resistance, UV resistance and corrosion resistance of the material, and can make it exhibit nano-effects such as light, electricity, sound, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/66C08G18/48C08G18/50C08G18/77
CPCC08G18/12C08G18/4825C08G18/5096C08G18/6692C09D175/08C08L83/04C08G18/3203
Inventor 刘伟区夏侯国论
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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