Nano composite material-modified antiaging building coating and preparing method thereof

A technology of nanocomposite materials and architectural coatings, applied in the field of anti-aging architectural coatings, which can solve the problems of large surface energy of nanocomposites, poor adhesion of coating films, and difficulties in nanomaterials, and achieve low production costs, excellent scrub resistance, Good film performance

Active Publication Date: 2016-04-20
GUANGDONG SUNLIGHT FERTILE SOIL ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface energy of nanocomposites is very large, and it is difficult to achieve stable dispersion, and it is difficult to introduce nanomaterials into the coating matrix.
[0003] Chinese patent (02133550.8) discloses an anti-aging architectural coating modified by inorganic nanocomposites, which is to add water, ethylene glycol or propylene glycol, additives, fillers and acrylic acid to a nanocomposite with an average particle size of 15-50nm The ester homopolymer or copolymer emulsion is prepared by stirring, dispersing and grinding in a mixing reactor according to the conventional method. The anti-aging index of the prepared coating is 50-120% higher than that of the coating without adding inorganic nanocomposite materials, and it is resistant to scrubbing. Performance, water resistance, anti-fouling, etc. are improved by 1-5 times compared with coatings without inorganic nanocomposites, but the coating has poor stability and poor coating adhesion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A nanocomposite modified anti-aging architectural paint, in parts by weight, comprising the following components:

[0044] 20 parts of polyester resin, 2 parts of nano-montmorillonite,

[0045] 1 part of nano-modified titanium oxide, 1.5 parts of sodium polyacrylate,

[0046] 1 part of dispersant, 2 parts of curing agent,

[0047] 0.8 parts of filler, 1 part of other additives,

[0048] 20 parts of deionized water.

[0049] Its preparation method comprises the following steps:

[0050] (1) Mix deionized water and nano-titanium oxide evenly, add butyl orthosilicate dropwise at a rate of 1ml / min, stir and mix evenly, heat up to 40°C, add solid acid, heat up to 100°C, and reflux for 2 hours , cooled to room temperature to obtain a nano-modified titanium oxide mixture;

[0051] (2) Mix and stir the polyester resin, nano-montmorillonite, dispersant and deionized water evenly, and ultrasonicate for 3 hours at a power of 500W to obtain a mixed dispersion;

[0052] (3) Ad...

Embodiment 2

[0054] A nanocomposite modified anti-aging architectural paint, in parts by weight, comprising the following components:

[0055] 50 parts of polyester resin, 5 parts of nano-montmorillonite,

[0056] 3 parts of nano-modified titanium oxide, 2 parts of sodium polyacrylate,

[0057] 1.5 parts of dispersant, 3 parts of curing agent,

[0058] 1.2 parts of filler, 2 parts of other additives,

[0059] 30 parts of deionized water.

[0060] Its preparation method comprises the following steps:

[0061] (1) Mix and stir deionized water and nano-titanium oxide evenly, add butyl orthosilicate dropwise at a rate of 2ml / min, stir and mix evenly, heat up to 50°C, add solid acid, heat up to 120°C, and reflux for 5 hours , cooled to room temperature to obtain a nano-modified titanium oxide mixture;

[0062] (2) Mix and stir the polyester resin, nano-montmorillonite, dispersant and deionized water evenly, and ultrasonicate for 5 hours at a power of 500W to obtain a mixed dispersion;

[...

Embodiment 3

[0065] A nanocomposite modified anti-aging architectural paint, in parts by weight, comprising the following components:

[0066] 35 parts of polyester resin, 3 parts of nano-montmorillonite,

[0067] 2.5 parts of nano-modified titanium oxide, 1.5 parts of sodium polyacrylate,

[0068]1.3 parts of dispersant, 2 parts of curing agent,

[0069] 1 part of filler, 2 parts of other additives,

[0070] 20 parts of deionized water.

[0071] Its preparation method comprises the following steps:

[0072] (1) Mix and stir deionized water and nano-titanium oxide evenly, dropwise add butyl orthosilicate at a rate of 1.2ml / min, stir and mix evenly, heat up to 45°C, add solid acid, heat up to 105°C, and reflux for 3 hour, cooled to room temperature to obtain nano-modified titanium oxide mixed solution;

[0073] (2) Mix and stir the polyester resin, nano-montmorillonite, dispersant and deionized water evenly, and under the power of 500W, sonicate for 3.5 hours to obtain a mixed dispersi...

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Abstract

The invention discloses nano composite material-modified antiaging building coating, comprising following components in parts by weight: 20-50 parts of polyurethane resin, 2-5 parts of nano-montmorillonite, 1-3 parts of nano modified titanium oxide, 1.5-2 parts of sodium polyacrylate, 1-1.5 parts of dispersant, 2-3 parts of curing agent, 0.8-1.2 parts of padding, 1-2 parts of other auxiliaries and 20-30 parts of deionized water. The invention further discloses a preparing method of the coating. The coating prepared by the invention is good in antiaging property, and excellent in scrub resistance and dirty resistance, good in stability, excellent in coating film performance, and a preparing process is mild in conditions, easy to control, low on equipment requirements and low in production cost.

Description

Technical field: [0001] The invention relates to the technical field of coatings, in particular to an anti-aging architectural coating modified by a nanocomposite material. Background technique: [0002] The development direction of architectural coatings is high decoration, strong stain resistance, high durability, resource saving, energy saving, pollution-free, pollution-free, environmentally friendly, and in line with the requirements of sustainable development. However, after the architectural coating is irradiated by ultraviolet rays, the polymer chains in the coating film matrix are prone to breakage and pulverization. Nanoscale titanium oxide, silicon oxide and zinc oxide have excellent aging resistance, which can significantly improve the aging resistance of coatings. Nano silicon oxide has the optical characteristics of ultraviolet absorption and infrared reflection. It can absorb more than 70% of ultraviolet rays within a wavelength of 400nm and reflect more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/12
CPCC08K2201/011C09D7/61C09D7/62C09D7/65C09D167/00C08L33/02C08K13/06C08K9/10C08K2003/2241C08K3/346C08K2003/265
Inventor 谢永忠
Owner GUANGDONG SUNLIGHT FERTILE SOIL ENVIRONMENTAL PROTECTION TECH CO LTD
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