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Heat reflective heat insulating composite coating preparation method

A composite coating, heat reflection technology, applied in the direction of reflection/signal coatings, epoxy resin coatings, unspecified rubber coatings, etc. The effect of stable thermal properties, stable physical and chemical properties, and easy long-term storage

Inactive Publication Date: 2010-01-20
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned materials all have certain defects of toxicity, unstable chemical properties, not easy to store for a long time, and the heat reflection and heat insulation performance changes with time and environmental changes.
Although CN1232599C discloses a kind of nano transparent heat-insulating composite coating, it is made of polyurethane resin, polysiloxane resin, polyacrylic resin, nano indium tin oxide powder or nano tin antimony oxide powder, coating additive and diluent composition, the composite coating has a transmittance of 80% to visible light and a shielding rate of 75% to infrared rays, but the preparation process of the composite coating must first prepare a wet paste of nano-indium tin oxide or nano-tin antimony oxide, and then press the formula It is made by adding water-based polymer resin, coating additives and thinners. The preparation process has defects such as complicated operation, high cost, large environmental pollution and unsuitable for industrial production.

Method used

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  • Heat reflective heat insulating composite coating preparation method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a) Weigh 1.1149g (4.888mmol) antimony trichloride (SbCl 3 );

[0027] b) add 3.3347g absolute ethanol;

[0028] c) stirring at room temperature for 0.5 to 2 hours to obtain a colorless and transparent solution;

[0029] d) adding 4.4596g oily acrylic resin;

[0030] e) Continue stirring at room temperature for 0.5 to 2 hours to obtain a colorless, transparent and uniform slurry;

[0031] f) Weigh 0.5139g (3.666mmol) of hexamethylenetetraammonium, grind it for 20 minutes, add it to the above slurry, and react at 50°C for 12 hours. Composite coatings.

[0032] figure 1 The ultraviolet-visible-near-infrared reflection spectrogram of the composite coating sample prepared in this embodiment can be seen from the figure: the reflectivity of the prepared composite coating to near-infrared heat rays is above 90%.

[0033] figure 2 The ultraviolet absorption spectrogram of the composite paint sample prepared in this embodiment can be seen from the figure: the prepared com...

Embodiment 2

[0035] a) Weigh 1.1149g (4.888mmol) antimony trichloride (SbCl 3 ) and 0.0351g (0.2573mmol) zinc chloride (ZnCl 2 );

[0036] b) add 3.3347g absolute ethanol;

[0037] c) stirring at room temperature for 0.5 to 2 hours to obtain a colorless and transparent solution;

[0038] d) adding 4.4596g oily acrylic resin;

[0039] e) Continue stirring at room temperature for 0.5 to 2 hours to obtain a colorless, transparent and uniform slurry;

[0040] f) Weigh 0.5320g (3.795mmol) of hexamethylenetetraammonium, grind it for 20 minutes, add it to the above slurry, and react at 50°C for 12 hours. Composite coatings.

[0041] It is found through testing that the reflectivity of the composite coating prepared in this embodiment to near-infrared heat rays is also more than 90%, and has strong absorption in the ultraviolet region.

Embodiment 3

[0043] a) Weigh 1.1149g (4.888mmol) antimony trichloride (SbCl 3 ) and 0.0902g (0.2573mmol) tin tetrachloride (SnCl 4 );

[0044] b) add 3.3347g absolute ethanol;

[0045] c) stirring at room temperature for 0.5 to 2 hours to obtain a colorless and transparent solution;

[0046] d) adding 4.4596g oily acrylic resin;

[0047] e) Continue stirring at room temperature for 0.5 to 2 hours to obtain a colorless, transparent and uniform slurry;

[0048] f) Weigh 0.5500g (3.923mmol) of hexamethylenetetraammonium, grind it for 20 minutes, add it to the above slurry, and react at 50°C for 12 hours. Composite coatings.

[0049] It is found through testing that the reflectivity of the composite coating prepared in this embodiment to near-infrared heat rays is also more than 90%, and has strong absorption in the ultraviolet region.

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Abstract

The invention discloses a heat reflective heat insulating composite coating preparation method, comprising the following steps: adding absolute ethanol in inorganic salt of antimony, stirring at room temperature to prepare colorless transparent solution; adding oil resin, stirring at room temperature to prepare colorless transparent uniform grout; weighting stoichiometric base, adding the base in the grout to react at 20-80 DEG C for 5-20h and obtaining the composite coating. Compared with the prior art, the invention first adopts in situ synthesis method to prepare the heat reflective heat insulating composite coating, the method has easy process, easy operation, cheap and accessible raw materials and no three wastes generated in reaction process basically and the method is characterized by green and environmentally friend, low energy consumption, high benefit and the like, thus being applicable to industrialized production; the product prepared by the invention has beneficial effects such as safety and non-toxic, stable chemical and physical properties, easily long-term preservation, stable heat reflective performance and heat insulating performance and the like.

Description

technical field [0001] The invention relates to a preparation method of a heat-reflecting heat-insulating composite coating, in particular to a preparation method of a composite coating capable of shielding solar heat radiation and other heat radiation, and having functions of absorbing ultraviolet rays and heat insulation. Background technique [0002] The main source of heat for Earth's biosphere is the sun. Solar radiation energy is mainly concentrated in the band below 2.5μm, of which: ultraviolet light energy (λ<0.35μm) accounts for 5%, visible light (λ=0.35~0.76μm) accounts for 40%, near infrared (λ=0.76~2.5μm) Accounted for 50%, other band heat accounted for 5%. Through radiation, convection and conduction, the heat energy allows the earth's environment to absorb heat, and the earth's environment also needs to dissipate heat to consume energy. Taking buildings as an example, the energy consumption of buildings accounts for 27% of the energy consumption of the who...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/33C09D7/12C09D133/00C09D163/00C09D161/20C09D183/04C09D127/24C09D121/00
Inventor 余锡宾汪正军尹开忠王飞久
Owner SHANGHAI NORMAL UNIVERSITY