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A method for preparing titanium dioxide/hollow microsphere composite reflective heat insulation filler

A technology of hollow microspheres and titanium dioxide, which is applied in the direction of reflection/signal coatings, etc., to achieve the effects of reducing production costs, improving coating effects, and improving film-forming effects

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing metal oxide coating coating technology, the present invention provides a preparation method for solar reflection and thermal insulation filler of titanium dioxide / hollow microsphere composite particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Sieve hollow ceramic microbeads to obtain hollow ceramic microbeads with a particle size distribution in the range of 150-1250 nm.

[0039] (2) At 120°C, mix 200g of ionic liquid 1-butyl-3-methylimidazole acetate [Bmim][oAc] with 35g of tetraethyl titanate, and stir gently until the mixture is uniform.

[0040] (3) Add 10 g of hollow ceramic microspheres screened in step (1), and mix well.

[0041] (4) Slowly add 180 g of deionized water at 80° C. and keep stirring to hydrolyze the titanium-containing raw material.

[0042] (5) After the hydrolysis is complete, add 20g of absolute ethanol, pour into a closed container, and heat to 150°C for 12 hours.

[0043](6) Wash and separate with water after the reaction, filter and dry, dry at 100°C, and calcinate at 600°C for 5 hours to obtain titanium dioxide / hollow ceramic microbead composite particles. After measurement, the particle size of the obtained product is larger than that of the hollow ceramic microbeads, indic...

Embodiment 2

[0045] (1) Sieve hollow ceramic microbeads to obtain hollow ceramic microbeads with a particle size distribution in the range of 150-1250 nm.

[0046] (2) At 120°C, 150g of ionic liquid 1-(2-piperidinyl-ethyl)-3-methylimidazolium tetrafluoroborate [Pemim]BF 4 Mix with 35g of tetraethyl titanate, stir gently until the mixture is uniform.

[0047] (3) Add 10 g of hollow ceramic microspheres screened in step (1), and mix well.

[0048] (4) Slowly add 180 g of deionized water at 80° C. and keep stirring to hydrolyze the titanium-containing raw material.

[0049] (5) After the hydrolysis is complete, add 20g of absolute ethanol, pour it into a closed container, and heat it to 150°C for 24 hours.

[0050] (6) Wash and separate with water after the reaction, filter and dry, dry at 100°C, and calcinate at 600°C for 5 hours to obtain titanium dioxide / hollow ceramic microbead composite particles. After measurement, the particle size of the obtained product is larger than that of the ...

Embodiment 3

[0052] (1) Take hollow glass microspheres and sieve to obtain hollow glass microspheres with a particle size distribution in the range of 150-1300nm.

[0053] (2) At 140°C, 150g of ionic liquid 1-(2-piperidinyl-ethyl)-3-methylimidazolium tetrafluoroborate [Pemim]BF 4 Mix with 35g of tetraethyl titanate, stir gently until the mixture is uniform.

[0054] (3) Add 40 g of the hollow glass microspheres screened in step (1), and mix well.

[0055] (4) Slowly add 180 g of deionized water at 80° C. and keep stirring to hydrolyze the titanium-containing raw material.

[0056] (5) After the hydrolysis is complete, add 20g of absolute ethanol, pour into a closed container, and heat to 150°C for 12 hours.

[0057] (6) Wash and separate with water after the reaction, filter and dry, dry at 100°C, and calcinate at 600°C for 5 hours to obtain titanium dioxide / hollow glass microsphere composite particles. After measurement, the particle size of the obtained product is larger than that of ...

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Abstract

The invention discloses a preparation method of titanium dioxide / hollow microsphere composite particles. In this method, a hydrophilic alkaline ionic liquid is used to replace the water+alkali system, so that the reaction has a more stable hydrolysis rate. Bead dispersion and surface titania adsorption film formation. The composite particle filler prepared by the above method has good titanium dioxide dispersion and film-forming properties, improves coating uniformity, and has obvious heat insulation effect.

Description

technical field [0001] The invention relates to a method for preparing a hollow microsphere composite filler in which titanium dioxide is modified on the surface of the hollow microsphere. The filler has solar light emission and heat insulation performance, and belongs to the field of environment-friendly green energy-saving materials. Background technique [0002] Strong solar radiation has a direct impact on building surfaces and indoor environments. The solar energy radiated from the sun to the surface of the object is about 750w / m per second 2 After continuous sunlight irradiation, the energy on the surface of the object continues to accumulate, and the temperature rises significantly. For example, in hot summer, the surface temperature of metal objects can reach 70~80°C, and the surface temperature of building roofs and exterior walls can reach 40~50°C. While production and human life bring inconvenience, there are also some potential safety hazards. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/33
CPCC09D5/004
Inventor 刘名瑞赵巍王晓霖李遵照薛倩肖文涛
Owner CHINA PETROLEUM & CHEM CORP
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