Double-coated hollow glass microbead heat-insulated coating and preparation method thereof

A technology of hollow glass microspheres and thermal insulation coatings, applied in the direction of reflection/signal coatings, coatings, etc., can solve the problems that hollow glass microspheres are not easy to disperse, difficult to achieve reflection effect, affect the uniformity of coating film, etc., and achieve heat insulation The effect is obvious, the reflectivity and weather resistance are improved, and the product performance is stable

Inactive Publication Date: 2012-03-28
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they all have certain thermal insulation functions, their common shortcomings are: 1. Hollow glass microspheres are not easy to disperse during use, and are prone to agglomeration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (a) Preparation of titanium dioxide-coated hollow glass microspheres: Take 1 part of hollow glass microspheres according to the formula ratio, 10 parts of water, 0.21 parts of surfactant (sodium dodecylbenzenesulfonate solution), and 23 parts of titanium sulfate solution , 30 parts of sodium hydroxide solution, put hollow glass microspheres in a four-neck flask, add water to make a slurry; put the slurry in a constant temperature water bath at 55°C, and stir thoroughly for 10-15min; add a surfactant, Add sodium hydroxide solution dropwise to control the system pH=6~8; slowly add titanium sulfate solution dropwise, and the reaction lasts for 6 hours; after the reaction is completed, wash with water, filter, dry, and finally calcined at 600°C to obtain titanium dioxide-coated hollow glass beads Product; (b) Preparation of hollow glass microspheres coated with iron oxide: take 1 part of hollow glass microspheres prepared above according to the formula ratio, 10 parts of wat...

Embodiment 2

[0026](a) Preparation of titanium dioxide-coated hollow glass microspheres: take 1.4 parts of hollow glass microspheres according to the formula ratio, 11 parts of water, 0.24 parts of surfactant (sodium dodecylbenzenesulfonate solution), and 30 parts of titanium sulfate solution , 37 parts of sodium hydroxide solution, put hollow glass microspheres in a four-neck flask, add water to make a slurry; put the slurry in a constant temperature water bath at 55°C, and stir fully for 10-15min; add a surfactant, Add sodium hydroxide solution dropwise to control the system pH=6~8; slowly add titanium sulfate solution dropwise, and the reaction lasts for 6 hours; after the reaction is completed, wash with water, filter, dry, and finally calcined at 600°C to obtain titanium dioxide-coated hollow glass beads Product; (b) Preparation of iron oxide re-coated hollow glass microspheres: take 1.4 parts of hollow glass microspheres prepared above according to the formula ratio, 10 parts of water...

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PUM

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Abstract

The invention discloses double-coated hollow glass microbead heat-insulated coating and a preparation method thereof. The double-coated hollow glass microbead heat-insulated coating is prepared from the following raw materials in percentage by weight: 20 to 30 percent of organic silicon modified styreneacrylic emulsion, 9 to 13 percent of double-coated hollow glass microbead, 8 to 12 percent of titanium dioxide rutile, 5 to 8 percent of talcum powder, 17 to 23 percent of heavy calcium, 1.5 to 2 percent of glycol, 0.13 to 0.2 percent of hydroxymethyl cellulose, 0.6 to 1 percent of dispersing agent, 0.35 to 0.45 percent of defoaming agent, 0.15 to 0.19 percent of wetting agent, 0.08 to 0.13 percent of multifunctional aid, 1.0 to 1.5 percent of film-forming aid and the balance of water. Reflective heat-insulated coating is prepared by performing pretreatment on hollow glass microbeads by a double-coated method, selecting silicone/acrylic emulsion as a base material, using the pretreated hollow glass microbeads, the titanium dioxide rutile, the talcum powder, the heavy calcium and the like as pigment fillers and adding a certain amount of fillers. The coating can improve reflectivity and weather resistance, and has the beneficial effects of environmental friendliness, energy conservation, simple production process, good dispersing effect, low cost, stable performance and long service life.

Description

technical field [0001] The invention relates to a heat-insulating coating, in particular to a double-coated hollow glass microsphere heat-insulating coating and a preparation method thereof. The hollow glass microspheres are pretreated by the double-coating method, and the hollow glass microspheres are modified to prepare reflective heat-insulating coatings, which have a uniform coating film and can significantly improve the reflection of dark-colored heat-insulating coatings on sunlight Efficiency, and meet the requirements of aesthetics, this kind of coating can improve the thermal insulation performance of buildings, reduce the impact of the external environment on the indoor temperature, and save air conditioning and heating costs. Background technique [0002] Sunlight at 750W / m per second 2 The energy radiates to the surface of the earth, and under the irradiation of sunlight, heat continuously accumulates on the surface of the irradiated object, making its surface te...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12C09D5/33
Inventor 赵苏田静姬一璇
Owner SHENYANG JIANZHU UNIVERSITY
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