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Preparation method of titanium dioxide/hollow microsphere composite filler

A technology of hollow microspheres and titanium dioxide, applied in the direction of reflection/signal coatings, etc., can solve problems such as difficult control of reaction speed, particle agglomeration, and uneven coating

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the common filler preparation methods are carried out in aqueous solution. Because water itself participates in the hydrolysis reaction, it is difficult to control the reaction rate, and there is charge adsorption between particles, which leads to defects such as uneven coating layer and particle agglomeration.

Method used

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  • Preparation method of titanium dioxide/hollow microsphere composite filler
  • Preparation method of titanium dioxide/hollow microsphere composite filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) After the surface is cleaned and degreased, the hollow ceramic microspheres are sieved to obtain hollow ceramic microspheres with a particle size distribution in the range of 150-1250nm.

[0031] (2) Add 50g of hollow microspheres to the mixed solution of 1gTx-10, 0.8g of dimethylamine and 60g of water, and stir until the mixture is uniform.

[0032] (3) Put the mixed solution obtained in step (2) into 1000 g of n-octane and stir vigorously to form an inverse microemulsion.

[0033] (4) Slowly add 20g of tetraethyl titanate to the mixture obtained in step (3) at 10°C, and at the same time turn on the ultrasonic oscillator with an oscillation frequency of 60KHz and a power of 700W, and continue the oscillation reaction for 8 hours.

[0034] (5) Take out the material obtained in step (4) and place it in a closed autoclave, add 30g of propanol and 70g of water, and heat to 165°C for a constant reaction for 16h.

[0035] (6) Wash and separate after the reaction, filter...

Embodiment 2

[0040] (1) After the surface is cleaned and degreased, the hollow ceramic microspheres are sieved to obtain hollow ceramic microspheres with a particle size distribution in the range of 150-1250nm.

[0041] (2) Add 50g of hollow microspheres into the mixed solution of 6g of Tween 20, 3g of ethylenediamine and 150g of water, and stir until the mixture is uniform.

[0042] (3) Put the mixed solution obtained in step (2) into 2000 g of cyclohexane and stir vigorously to form an inverse microemulsion.

[0043] (4) Slowly add 100g of tetraethyl titanate to the mixture obtained in step (3) at 8°C, and at the same time turn on the ultrasonic oscillator with an oscillation frequency of 40KHz and a power of 600W, and continue the oscillation reaction for 16 hours.

[0044] (5) Take out the material obtained in step (4) and place it in a closed autoclave, add 100g of ethanol and 500g of water, and heat to 175°C for a constant reaction for 36h.

[0045] (6) Wash and separate after the r...

Embodiment 3

[0047] (1) After the surface is cleaned and degreased, the hollow ceramic microspheres are sieved to obtain hollow ceramic microspheres with a particle size distribution in the range of 150-1250nm.

[0048] (2) Add 50g of hollow microspheres to the mixed solution of 10gspan-20, 2g of 1,2-propylenediamine and 300g of water, and stir until they are evenly mixed.

[0049] (3) Put the mixed solution obtained in step (2) into 3000 g of oleic acid and stir vigorously to form an inverse microemulsion.

[0050] (4) Slowly add 150g of tetrabutyl titanate into the mixture obtained in step (3) at 6°C, and at the same time turn on the ultrasonic oscillator with an oscillation frequency of 50KHz and a power of 700W, and continue the oscillation reaction for 26 hours.

[0051] (5) Take the material obtained in step (4) and place it in a closed autoclave, add 180g of ethanol and 200g of water, and heat to 195°C for a constant reaction for 40h.

[0052] (6) After the reaction, wash and separ...

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Abstract

The invention discloses a preparation method of a titanium dioxide / hollow microsphere composite filler. According to the method, a reversed-phase microemulsion system is adopted, an organic titanium source is slowly hydrolyzed on an oil / water interface through ultrasonic oscillation formed by small-frequency-band ultrasound, the surfaces of the hollow microspheres can be better coated with titanium dioxide crystal nucleuses due to the fact that the titanium dioxide crystal nucleuses are generated on a water phase layer; meanwhile, the reaction speed is controlled through two-step temperature rising, and the higher titanium dioxide film forming effect is achieved. According to the composite filler prepared by the method, the coating uniformity of titanium dioxide on the surfaces of the hollow microspheres is improved, so that the filler has obvious reflection performance and heat insulation and heat preservation effects.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide / hollow microsphere composite filler, which belongs to the field of environment-friendly green energy-saving materials. Background technique [0002] Intense solar radiation has a greater impact on the surface and internal ambient temperature of buildings and outdoor facilities, which increases the internal ambient temperature of buildings or outdoor facilities, which brings inconvenience to industrial production and human life. Some safety hazards. This has led to an increasing demand for various reflective insulation materials. Traditional buildings mostly use thermal insulation materials to reduce the impact of sunlight on the indoor environment, and it is a development trend in the future to achieve the effect of heat insulation by reflecting sunlight and meet the needs of environmental protection. [0003] The reflection effect in the reflective heat insulation coating is the ref...

Claims

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Application Information

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IPC IPC(8): C09D5/33
CPCC09D5/004
Inventor 刘名瑞赵巍李世瀚王晓霖李遵照薛倩
Owner CHINA PETROLEUM & CHEM CORP
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