Nano coating and preparation method and application thereof

A nano-coating and nano-material technology, applied in polyester coatings, epoxy resin coatings, radiation-absorbing coatings, etc., can solve the problems of blocking infrared energy, limited infrared blocking bandwidth, complex processing procedures and processes, and achieve high infrared Light blocking rate, high visible light transmittance, and remarkable thermal insulation effect

Inactive Publication Date: 2012-10-10
SUZHOU GENER NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the nano-coatings disclosed in the above-mentioned patent documents generally have the advantages of better visible light transmittance and infrared cut-off rate, there are still deficiencies: (1) the preparation method is to first disperse the nano-materials in water or alcohols, etc. In the solvent, and then add water-based resin to make nano-coating, the nano-material and resin in the nano-coating are mainly combined by physical adsorption, the stability is poor, and it is easy to agglomerate over time, thus affecting the nano-coating. Infrared rejection rate of
(2) The hydrophilic solvent used has a high surface energy, which can easily cause insufficient wettability of the nano-coating on the surface of the coated substrate, resulting in uneven coating of

Method used

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  • Nano coating and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The preparation of nano-coating 1 is prepared by mixing commercially available nano-dispersion liquid A: 6 parts, nano-dispersion liquid B: 1 part, butanone: 7.5 parts, photocurable resin mixture: 6.5 parts, and stirring evenly at room temperature. Nano Coating 1.

[0039] The specific characteristics of the nano-coating can be tested by preparing the nano-coating 1 into a nano-film, as follows: Coat the nano-coating 1 on a glass substrate with a thickness of 1 mm with a wire bar coater, and bake it in an oven at 70 degrees for 1 minute , and finally cured under the ultraviolet light mercury lamp to prepare sample 1 of the nano-film, its transmittance in the ultraviolet, visible and infrared bands is shown in figure 1 , the visible light transmittance and solar energy blocking rate of the sample under sunlight are 69.8% and 49.7% respectively (see Table 1 and figure 1 ).

Embodiment 2

[0041] For the preparation of nano-coating 2, mix commercially available nano-dispersion liquid B: 0.8 parts, nano-dispersion liquid C: 3 parts, methyl isobutyl ketone: 10.9 parts, photocurable resin mixture: 6.5 parts, and stir evenly at room temperature. Nano-coating 2 can be prepared.

[0042] The sample 2 of nano-coating 2 and nano-membrane prepared identically with the method described in embodiment 1, its transmittance in ultraviolet, visible light and infrared band see figure 1 , the visible light transmittance and solar energy blocking rate of this sample under sunlight are 70.6% and 56% respectively (see Table 1 and figure 1 ).

Embodiment 3

[0044] Nano-coating 3 was prepared by mixing commercially available nano-dispersion liquid C: 6 parts, methyl isobutyl ketone: 10.2 parts, photocurable resin mixture: 6.5 parts, and stirring evenly at room temperature to prepare nano-coating 3.

[0045] The nano-coating 3 and sample 3 of the nano-film prepared in the same way as in Example 1 have visible light transmittance and solar energy blocking rate under sunlight of 72.3% and 53.4% ​​respectively (see Table 1).

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Abstract

The invention provides nano coating comprising nano dispersion liquid, light-cured resin and auxiliaries. The nano dispersion liquid at least comprises nano materials and dispersants, the dispersants account for 5-50% of the weight of the nano materials, and the light-cured resin accounts for 100-600% of the weight of the nano materials. The auxiliaries at least comprise photoinitiators, adhesion promoters, flatting agents, surface anti-wear agents and diluting solvent. The dispersants and the light-cured resin form ionic bond or covalent bond combination, and chemical bonds at least include ester bonds, urea bonds, carbon-carbon bonds, carbon-nitrogen bonds and chemical bonds having the structural characteristics of -o-, carbamic acid ester, acid amide, acid imide, oxazolidinone and the like, so that re-agglomeration of the nano materials in films can be avoided, and further stability and weather resistance of the nano functional films are improved, and the service life of the nano functional films is prolonged. The nano coating further has the advantages of high visible light transmittance, high infrared barrier rate and high ultraviolet absorption rate.

Description

technical field [0001] The invention relates to a nano-coating technology, in particular to a nano-coating suitable for a nano-sunshine film, a preparation method thereof, and an application thereof. Background technique [0002] Existing sunlight film technology includes vacuum metallization film such as aluminum film, magnetron sputtering multilayer metal film such as double silver film, multilayer polymer stretch film and nano film, etc. Among them, although vacuum metallized aluminum film has low investment cost, its high visible light reflectance will cause serious light pollution; although magnetron sputtering multilayer metal film and multilayer polymer stretched film have high visible light transmittance and high The advantages of infrared rejection rate, but its investment cost is relatively high, and the cost performance is low; the nano-sunshine film made of nano-coating can take into account both visible light transmittance and infrared rejection rate, and its in...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D5/32C09D163/00C09D167/06
Inventor 方官久方官乾
Owner SUZHOU GENER NANO TECH
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