Preparing method of nanometer titanium oxide modified hollow glass beads

A hollow glass microbead, nano-titanium dioxide technology, applied in chemical instruments and methods, epoxy resin coatings, dyed low molecular organic compound treatment, etc. problem, to achieve the effect of high thermal reflectivity, low cost and low thermal conductivity

Active Publication Date: 2016-08-03
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN101302360A discloses a method for making colored hollow microspheres by using high-temperature metal oxide colored ceramic hollow microspheres, which mixes hollow microsphere materials and high-temperature oxide pigments in a certain proportion and calcines to obtain colored hollow microsphere pigments. The disadvantage of this method is that the colored ceramic hollow microspheres do not have infrared reflection effect and absorb more heat.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 5g of hollow glass microspheres, add them to 1L of 80°C degreasing solution, react at 80°C for 40 minutes, filter and wash until neutral; the degreasing solution is sodium hydroxide, sodium carbonate and sodium silicate dissolved in In deionized water, the concentrations of sodium hydroxide, sodium carbonate and sodium silicate are 40g / L, 10g / L and 5g / L respectively;

[0037] Immerse the degreased hollow glass microspheres in 1 L of hydrofluoric acid solution with a mass concentration of 2%, react at 40°C for 1h, filter, wash with water, and dry at 80°C for 1h; wherein the hydrofluoric acid solution is The hydrofluoric acid deionized aqueous solution of 47% by mass fraction is diluted with deionized water into a solution of 2% by mass fraction;

[0038] Dissolve 5ml of tetrabutyl titanate in 200ml of absolute ethanol solution, mix 200ml of absolute ethanol and 200ml of deionized water, and add dropwise to the above tetrabutyl titanate solution under stirring; then ad...

Embodiment 2

[0057] Take 10 g of hollow glass microspheres, add them to 1L of 100°C degreasing liquid, react at 100°C for 60 minutes, filter and wash with water; the degreasing liquid is dissolved in sodium hydroxide, sodium carbonate and sodium silicate In deionized water, obtain, wherein the concentration of sodium hydroxide, sodium carbonate and sodium silicate is 45g / L, 10g / L and 5g / L respectively;

[0058] Immerse the degreased hollow glass microspheres in 1 L of hydrofluoric acid solution with a mass concentration of 4%, react at 60°C for 2h, filter, wash with water, and dry at 80°C for 2h; wherein the hydrofluoric acid solution is The hydrofluoric acid deionized aqueous solution of 47% by mass fraction is diluted with deionized water into a solution of 4% by mass fraction;

[0059] Dissolve 10ml of tetrabutyl titanate in 200ml of absolute ethanol solution, mix 200ml of absolute ethanol and 400ml of deionized water, and slowly add it to the tetrabutyl titanate solution, stirring vigo...

Embodiment 3

[0071] Take 8g of hollow glass microspheres, add them to 1L of degreasing solution at 90°C, react at 90°C for 50 minutes, then filter and wash with water; the degreasing solution is to dissolve sodium hydroxide, sodium carbonate and sodium silicate in deionized In water, obtain, wherein the concentration of sodium hydroxide, sodium carbonate and sodium silicate is 45g / L, 15g / L and 5g / L respectively;

[0072] Immerse the deoiled hollow glass microspheres in 1 L of hydrofluoric acid solution with a mass concentration of 3%, react at 50°C for 1.5h, filter, wash with water, and dry at 80°C for 1.5h; the hydrofluoric acid The solution is to dilute the hydrofluoric acid deionized aqueous solution with a mass fraction of 47% to a solution with a mass fraction of 3% with deionized water;

[0073] Dissolve 8ml of tetrabutyl titanate in 100ml of absolute ethanol solution, mix 100ml of absolute ethanol and 200ml of deionized water, and slowly add it to the tetrabutyl titanate solution wh...

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Abstract

The invention relates to the field of composite materials, in particular to a preparing method of brand-new nanometer titanium oxide modified hollow glass beads. The obtained hollow glass beads have excellent heat reflecting performance. By controlling technological parameters of concentration of tetrabutyl titanate in a precursor, reaction temperature and time and the dispersant amount, the modified technology of the hollow glass beads is optimized, and the method is easy and convenient to operate. Test results show that the hollow glass beads modified by nanometer titanium oxide particles have low heat conductivity coefficient and high heat reflectivity and can meet the actual needs.

Description

technical field [0001] The invention relates to the technical field of functional inorganic non-metallic materials, and in particular provides a preparation method of nano titanium dioxide modified hollow glass microspheres. Background technique [0002] Low-carbon energy saving has become a hot spot in the world today. While solar energy is being actively developed and utilized by human beings, the heat generated by the sun's intense radiation also causes energy consumption, which has become an important research topic. Among them, heat-insulating coatings with energy-saving effects have attracted extensive attention and research at home and abroad. Studies have proved that the pigments and fillers in the coating mainly play a role in heat insulation in the thermal insulation coating. At present, more researches are on heat-reflective pigments, the energy-saving effect is relatively simple, and the focus is mainly on light-colored pigments. From an aesthetic point of view...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/06C09C3/08C09C3/04C09D163/10C09D7/12C09D5/33
CPCC08K3/22C08K3/36C08K7/28C08K9/02C08K2003/2241C08K2201/011C09C1/28C09C3/003C09C3/006C09C3/043C09C3/06C09C3/08C09D5/004C09D7/61C09D7/62C09D163/10
Inventor 李少香李光俊孙立水
Owner QINGDAO UNIV OF SCI & TECH
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