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Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance

A polyacrylate, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of high hydrolysis activity and complex process, and achieve the effect of improving thermal insulation performance and thermal insulation performance.

Active Publication Date: 2015-07-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method usually requires two steps to complete, and the process is relatively complicated
And because the substances used as "titanium sources" usually have high hydrolysis activity, it is difficult to uniformly coat the particle surface and form hollow titanium dioxide with a regular structure

Method used

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  • Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance
  • Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance
  • Preparation method for hollow titanium dioxide/polyacrylate composite film with insulation performance

Examples

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preparation example Construction

[0022] The preparation method of the hollow titanium dioxide / polyacrylate composite film with thermal insulation performance that the present invention relates to comprises the following steps:

[0023] (1) Disperse 0.3-0.5g of polystyrene microspheres in 30-35g of absolute ethanol, and ultrasonically treat it for 5-10 minutes to form a mixed solution A;

[0024] (2) Add 0.2-0.37g of butyl titanate to 15g of absolute ethanol and stir evenly to form a mixed solution B;

[0025] (3) Add the mixed solution B and 2.5-5.0 g of ammonia water with a concentration of 28wt% dropwise into the mixed solution A at the same time, the dropping time is controlled at 30-60 minutes, and then stirred in a water bath at room temperature for 1-1.5 hours;

[0026] (4) Warm up the water bath to 50°C and stir mechanically for 2-4 hours to obtain a white suspension;

[0027] (5) Centrifuge the white suspension obtained in step (4), wash the product with absolute ethanol for 3 to 5 times, and then pu...

Embodiment 1

[0031] (1) Disperse 0.3g of polystyrene microspheres in 35g of absolute ethanol, and ultrasonicate for 5 minutes to form a mixed solution A;

[0032] (2) Add 0.37g of butyl titanate to 15g of absolute ethanol and stir evenly to form a mixed solution B;

[0033] (3) Add the mixed solution B and 2.5g of ammonia water with a concentration of 28wt% dropwise to the mixed solution A at the same time, the dropping time is controlled at 60min, and then stirred in a water bath at room temperature for 1h;

[0034] (4) Warm up the water bath to 50°C and stir mechanically for 4 hours to obtain a white suspension;

[0035] (5) Centrifuge the white suspension obtained in step (4), wash the product 3 times with absolute ethanol, and then put the washed product in an oven at 60°C for 15 hours to obtain hollow titanium dioxide particles;

[0036] (6) Ultrasonic disperse 0.2 g of hollow titanium dioxide particles obtained in step (5) in 18 g of distilled water, mix and stir it with 30 g of pol...

Embodiment 2

[0039] (1) Disperse 0.4g of polystyrene microspheres in 32g of absolute ethanol, and ultrasonicate for 7min to form a mixture A;

[0040] (2) Add 0.3g of butyl titanate to 15g of absolute ethanol and stir evenly to form a mixed solution B;

[0041] (3) Add the mixed solution B and 3.7g of ammonia water with a concentration of 28wt% to the mixed solution A dropwise at the same time, the dropping time is controlled at 45min, and then stirred in a water bath at room temperature for 1.2h;

[0042] (4) Warm up the water bath to 50°C and stir mechanically for 3 hours to obtain a white suspension;

[0043] (5) Centrifuge the white suspension obtained in step (4), wash the product 4 times with absolute ethanol, and then dry the washed product in a 60°C oven for 13 hours to obtain hollow titanium dioxide particles;

[0044] (6) Ultrasonic disperse 0.4g of hollow titanium dioxide particles obtained in step (5) in 16g of distilled water, mix and stir it with 25g of polyacrylate emulsion...

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Abstract

The invention relates to a preparation method for a hollow titanium dioxide / polyacrylate composite film with an insulation performance. A template method for preparing hollow titanium dioxide needs to be finished by two steps, and the process is complex. The preparation method disclosed by the invention comprises the following steps: dispersing polystyrene microspheres in absolute ethyl alcohol and ultrasonically treating to form mixed solution A; adding butyl titanate in absolute ethyl alcohol to form mixed solution B; dripping the mixed solution B and ammonia water into the mixed solution A; heating and stirring in a water bath to obtain a white turbid liquid, carrying out a centrifugal treatment, washing and drying to obtain hollow titanium dioxide particles, ultrasonically dispersing the hollow titanium dioxide particles in distilled water, and mixing and stirring with a polyacrylate emulsion to obtain a composite emulsion; then taking the composite emulsion in a polytetrafluoroethylene plate and carrying out film formation to obtain the hollow titanium dioxide / polyacrylate composite film. The preparation method disclosed by the invention realizes one-step synthesis for hollow titanium dioxide with a regular structure, and overcomes the defect of a complex process; moreover, the hydrolysis speed of butyl titanate is reduced through the ammonia water, the uniform coating of titanium dioxide is realized, and hollow titanium dioxide with the regular structure is formed.

Description

technical field [0001] The invention relates to a preparation method of a polyacrylate composite film, in particular to a preparation method of a hollow titanium dioxide / polyacrylate composite film with thermal insulation performance. Background technique [0002] Polyacrylate is widely used in coatings, adhesives, leather manufacturing and other fields due to its simple production process and high cost performance. However, with the continuous improvement of people's living standards, the performance characteristics of ordinary polyacrylates are difficult to meet people's needs, and the development of high-end polyacrylates with outstanding performance characteristics has become a development trend. [0003] Hollow material is a new type of particulate material developed in the 1950s and 1960s. Since Kowalski and his colleagues made pioneering work in Rohm and Haas, they have prepared monodisperse particles with controllable particle size and shape. Sexual hollow microsph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L33/04C08K7/24C08K3/22C01G23/053
Inventor 鲍艳李淼马建中
Owner SHAANXI UNIV OF SCI & TECH
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