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Spherical titanium dioxide preparation method, and applications thereof in automatically cleaning coating layers

A titanium dioxide, spherical technology, applied in the preparation method of spherical titanium dioxide and its application in self-cleaning coatings, can solve the problems of unfavorable influence of environmental producers, complex synthesis steps of nano oxide particles, etc., and achieve good corrosion resistance and Self-cleaning ability, excellent self-cleaning ability, good dispersion uniformity

Active Publication Date: 2019-01-11
QINGDAO BINHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the inorganic oxide particles added in common research materials and technologies are commercially available, or nanoscale oxide particles, the aggregation of nanoscale particles is more serious, and the synthesis steps of nanoscale oxide particles are more complicated. Some require an acid-base environment, and some require special pressure conditions, which have adverse effects on the environment and producers

Method used

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  • Spherical titanium dioxide preparation method, and applications thereof in automatically cleaning coating layers
  • Spherical titanium dioxide preparation method, and applications thereof in automatically cleaning coating layers
  • Spherical titanium dioxide preparation method, and applications thereof in automatically cleaning coating layers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1 A kind of spherical titanium dioxide and preparation method thereof

[0048] The following components are included: 5% urea ethanol solution (solution A), 30% urea aqueous solution (solution B), tetrabutyl titanate and ethanol. Wherein, the volume ratio of tetrabutyl titanate and ethanol used is 1:2.

[0049] Preparation:

[0050] (1) Take 20ml tetrabutyl titanate and add 40ml ethanol, stir evenly;

[0051] (2) Add 10ml solution A, 2ml solution B, stir for 2h;

[0052] (3) The above-mentioned sol is subjected to gel transition at room temperature, and the gelation time is 72h;

[0053] (4) Grinding the dried sol and calcining at 400°C for 3h;

[0054] (5) Grinding the calcined titanium dioxide particles for later use (No. 1, see image 3 a).

Embodiment 2

[0055] Embodiment 2 A kind of spherical titanium dioxide and preparation method thereof

[0056] It includes the following components: 5% urea ethanol solution (solution A), tetrabutyl titanate and ethanol. Wherein, the volume ratio of tetrabutyl titanate and ethanol used is 1:2.

[0057] Preparation:

[0058] (1) Take 20ml tetrabutyl titanate and add 40ml ethanol, stir evenly;

[0059] (2) Add 8ml of solution A and stir for 2h;

[0060] (3) The above-mentioned sol is subjected to gel transition at room temperature, and the gelation time is 72h;

[0061] (4) Grinding the dried sol and calcining at 400°C for 3h;

[0062] (5) Grinding the calcined titanium dioxide particles for later use (No. 2, see image 3 b)

Embodiment 3

[0063] Embodiment 3 A kind of spherical titanium dioxide and preparation method thereof

[0064] It includes the following components: 5% urea ethanol solution (solution A), tetrabutyl titanate and ethanol. Wherein, the volume ratio of tetrabutyl titanate and ethanol used is 1:2.

[0065] Preparation:

[0066] (1) Take 20ml tetrabutyl titanate and add 40ml ethanol, stir evenly;

[0067] (2) Add 10ml of solution A and stir for 2h;

[0068] (3) The above-mentioned sol is subjected to gel transition at room temperature, and the gelation time is 72h;

[0069] (4) Grinding the dried sol and calcining at 400°C for 3h;

[0070] (5) Grinding the calcined titanium dioxide particles for later use (No. 3, see image 3 c)

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Abstract

The invention belongs to the field of surface engineering and material protection, and more specifically relates to a spherical titanium dioxide preparation method, and applications thereof in automatically cleaning coating layers. The prepared spherical titanium dioxide is spherical titanium dioxide particles possess micrometer and nanometer sizes at the same time, and is prepared from followingraw material: a titanium source, ethanol, a urea aqueous solution, and / or a urea ethanol solution; the titanium source is a titanium organic salt or inorganic salt; the concentration of the urea aqueous solution ranges from 25 to 35wt%; the concentration of the urea ethanol solution ranges from 5 to 10wt%. Coating layers prepared from the spherical titanium dioxide are excellent in self cleaning capacity, reducing bonding of microorganisms and secreta of microorganisms, and preventing corrosion preferably. The coating layers are capable of improving self cleaning capacity and corrosion resistance of materials such as metal, and are especially suitable for self cleaning and corrosion prevention of metal materials in water or seawater.

Description

technical field [0001] The invention belongs to the field of surface engineering and material protection, and in particular relates to a method for preparing spherical titanium dioxide and its application in self-cleaning coatings. Background technique [0002] The marine engineering (bridges, ships, wharves, ships in the sea, marine development platforms) used in the development of marine resources and in the marine environment are mostly metal materials (carbon steel), which are caused by corrosion in the marine environment. The loss accounts for about one-third of the total steel corrosion loss (according to statistics, the loss caused by steel is about 2 trillion yuan), and the corrosion in the spray splash area is particularly serious in marine corrosion. This is because the spray splash area is located at the sea-air exchange interface, the metal is periodically wetted by seawater, and is in a state of frequent dry-wet alternation, a high concentration of salt particle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G23/08C09D7/62C09D5/08B82Y40/00
CPCB82Y40/00C01G23/053C01G23/08C01P2004/03C01P2004/32C01P2004/61C01P2004/62C08K7/18C08K9/04C08K9/08C08K2003/2241C09D5/08C09D7/62C09D7/70
Inventor 孙彩霞戴景杰张红霞张年龙王波李守英肖亚梅
Owner QINGDAO BINHAI UNIV
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