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Reflective water-based heat-insulating coating and preparation method thereof

A thermal insulation coating, reflective technology, applied in reflective/signal coatings, anti-corrosion coatings, coatings, etc., can solve the problems of uneven coating surface, poor thermal insulation performance, low surface reflectivity, etc., to achieve fast response speed , Optimize the coating modification conditions, the effect of low reaction temperature

Active Publication Date: 2019-09-27
YUEYANG CHANGLING EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: the literature "Preparation and Research of Water-Based Thermal Insulation Coating", "Development of New Thin-Layer Thermal Insulation Coating" and patents CN1067667A, CN1148072A, CN1037165A, etc. all use conventional thermal insulation materials such as sepiolite, expanded perlite, expanded leech Stone, titanium dioxide, talcum powder, etc. have the disadvantages of thick coating, uneven coating surface, low surface reflectivity, high cost, and poor thermal insulation performance.

Method used

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  • Reflective water-based heat-insulating coating and preparation method thereof
  • Reflective water-based heat-insulating coating and preparation method thereof
  • Reflective water-based heat-insulating coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0076] The volume ratio of tetrabutyl titanate, absolute ethanol, distilled water and glacial acetic acid is 1:2.5:0.2:0.15. Completely mix two parts of absolute ethanol with 2 / 3 of the total volume with tetrabutyl titanate and glacial acetic acid, and stir in a constant temperature water bath at 30°C at 300r / min for 40min to obtain a tetrabutyl titanate solution. The other 1 / 3 of absolute ethanol is fully mixed with water and a pH regulator to obtain a mixed aqueous solution, and the obtained mixed aqueous solution is evenly added dropwise to the tetrabutyl titanate solution at a speed of 1ml / min, and a uniform light yellow transparent sol is obtained after the drop is completed , control the pH value of the system at 3.5, continue to stir for 40 minutes, and then place it in the refrigerator for later use.

[0077] Take 3g of hollow glass microspheres, immerse in 100ml of organic solvent washing solution with a volume ratio of ethanol and distilled water of 10:1, ultrasonica...

Embodiment 2

[0084] A reflective water-based heat-insulating coating, including the following raw materials in weight percentage: 40% of silicon acrylic emulsion, 15% of unmodified common hollow glass microspheres, dispersant (Nopco SN-5040 and sodium hexametaphosphate) 0.8 %, defoamer (Nopco NXZ) 0.4%, thickener (hydroxyethyl cellulose) 0.55%, film-forming aid (alcohol ester-12) 1.8%, antifreeze agent (ethylene glycol) 0.6%, pH adjuster (ammonia water) 0.16%, preservative (Hemings DeuAdd-MB) 0.2%, balance water.

[0085] The preparation method of the reflective water-based heat-insulating coating of the present embodiment comprises the following steps: I. take a certain amount of water, dispersant, and defoamer, place it under the disperser and stir for 8min at a speed of 300r / min; II. add Thickener, stir at 1500r / min for 20min; III. Then reduce the speed to 300r / min, add emulsion, film-forming aid, antifreeze, preservative in turn, stir for 15min to make it evenly mixed; IV. At a rotati...

Embodiment 3

[0088] A reflective water-based heat-insulating paint, comprising the raw materials in the following percentages by weight: 40% of silicon acrylic emulsion, 15% of functional filler (hollow glass microsphere / anatase titanium dioxide thin film composite material (prepared in embodiment 1)), Dispersant (Nopco SN-5040 and sodium hexametaphosphate) 0.8%, defoamer (Nopco NXZ) 0.4%, thickener (hydroxyethyl cellulose) 0.55%, film-forming aid (alcohol ester -12) 1.8%, antifreeze (ethylene glycol) 0.6%, pH adjuster (ammonia) 0.16%, preservative (Hemings DeuAdd-MB) 0.2%, and the balance is water.

[0089] The preparation method of the reflective water-based heat-insulating coating of the present embodiment comprises the following steps: I. take a certain amount of water, dispersant, and defoamer, place it under the disperser and stir for 8min at a speed of 300r / min; II. add Thickener, stir at 1500r / min for 20min; III. Then reduce the speed to 300r / min, add emulsion, film-forming aid, an...

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Abstract

The invention provides reflecting waterborne heat-insulating coating and a preparation method thereof. The reflecting waterborne heat-insulating coating comprises an emulsion, a functional filler, a dispersant, a defoaming agent, a thickener, a film-forming aid, an anti-freezing agent, a pH regulator, a preservative and the balance of water. The functional filler is hollow glass microsphere / titanium dioxide film composite, having core-shell structure; titanium dioxide film is 0.3-0.7 mu m in thickness; titanium dioxide exists in anatase form, and has a coating quantity by weight of 5-25%. Thereflecting waterborne heat-insulating coating prepared herein has good uniformity, has high sunlight reflecting rate, and has small heat conductivity coefficient, good performance stability and excellent heat insulation.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a reflective water-based heat-insulating coating and a preparation method thereof, especially a reflective water-based heat-insulating coating containing hollow glass microspheres / titanium dioxide film composite material and a preparation method thereof . Background technique [0002] In the face of increasingly serious environmental problems and energy crisis, my country has taken energy conservation and emission reduction as a long-term development strategy. The use of thermal insulation materials in the building envelope to improve the thermal insulation performance of walls has become an important means to reduce building energy consumption. Therefore, it is of great significance to research and develop thermal insulation coatings that are mainly thermal insulation and supplemented by thermal insulation. Solar reflective thermal insulation coatings are a new type of buildin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/33C09D5/08C09D7/63
Inventor 蒋崇文龙杰宋曲之朱俊东王偶和
Owner YUEYANG CHANGLING EQUIP RES INST
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