A slow plugging type aeolian sand permeable brick loaded with nano titanium dioxide on the surface and its preparation method

A nano-titanium dioxide, surface-loaded technology, applied to ceramic products, other household appliances, household appliances, etc., can solve the problems of decreased permeability, short service life, easy blockage of permeable bricks, etc., to enhance water permeability, reduce tortuosity, Solve the effect of poor frost resistance

Active Publication Date: 2022-04-08
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the problems that the permeable bricks are easy to be blocked, the permeability drops rapidly and the service life is short during the current use process of the permeable bricks, the purpose of the present invention is to provide a slow-clogging aeolian sand permeable brick with nano-titanium dioxide loaded on the surface and a preparation method thereof. The specific principle is to use the hydrophilicity of nano-titanium dioxide to reduce the ability of particulate matter to adhere to the surface of permeable bricks, so as to delay the blockage of permeable bricks, improve the permeable performance of permeable bricks, and prolong their service life.

Method used

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  • A slow plugging type aeolian sand permeable brick loaded with nano titanium dioxide on the surface and its preparation method
  • A slow plugging type aeolian sand permeable brick loaded with nano titanium dioxide on the surface and its preparation method

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preparation example Construction

[0038] In one embodiment, the present invention provides a method for preparing a surface-loaded nano-titanium dioxide slow-clogging type aeolian sand permeable brick, comprising the following steps:

[0039] 1) Prepare a permeable brick matrix with aeolian sand as the main raw material;

[0040] 2) adding an appropriate amount of dispersant and nano-titanium dioxide into pure water, followed by ultrasonic treatment and magnetic stirring to obtain a nano-titanium dioxide dispersion;

[0041] 3) The nano-titanium dioxide dispersion is evenly loaded onto the rough surface of the permeable brick substrate by leaching and spraying;

[0042] 4) drying the permeable brick substrate treated in step 3) to form a film, keeping it warm, and finally preparing a permeable brick loaded with a nano-titanium dioxide coating.

[0043] In the preferred embodiment, in step 1), the permeable brick base is made of aeolian sand as the main raw material, walnut sand as the pore-forming agent, lime...

Embodiment 1

[0060] 1. Preparation of aeolian sand permeable brick matrix:

[0061] The permeable brick matrix of the present invention uses aeolian sand as the main raw material, walnut sand as the pore-forming agent, limestone as the foaming agent, and feldspar powder, waste glass powder and CMC as the binder. The percentage by mass is: 81% accumulated sand, 0.5% walnut sand, 0.5% limestone, 12% feldspar powder, and 6% waste glass powder. Finally, the dry weight mass of the matrix is ​​4% CMC sol with a concentration of 10%. The preparation method specifically includes the following steps:

[0062] 101) After the aeolian sand is dried, sieve and classify, and take 40-60 mesh for subsequent use;

[0063] Sieve and classify the walnut sand, and take 40-60 mesh for subsequent use;

[0064] Sieve and classify the feldspar powder, and take 140-160 mesh for later use;

[0065] Pulverize limestone and waste glass respectively, grind them in a ball mill, sieve and classify, and take 140-160 m...

Embodiment 2

[0078] 1. Preparation of aeolian sand permeable brick matrix:

[0079] The permeable brick matrix of the present invention uses aeolian sand as the main raw material, walnut sand as the pore-forming agent, limestone as the foaming agent, and feldspar powder, waste glass powder and CMC as the binder. The percentage by mass is: 75% accumulated sand, 2% walnut sand, 2% limestone, 12% feldspar powder, and 9% waste glass powder. Finally, add 4% CMC sol with a concentration of 12% of the dry weight of the matrix. The preparation method specifically comprises the following steps:

[0080] 101) After the aeolian sand is dried, sieve and classify, and take 40-60 mesh for subsequent use;

[0081] Sieve and classify the walnut sand, and take 40-60 mesh for subsequent use;

[0082] Sieve and classify the feldspar powder, and take 140-160 mesh for later use;

[0083] Pulverize limestone and waste glass respectively, grind them in a ball mill, sieve and classify, and take 140-160 mesh f...

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Abstract

The invention discloses a slow-clogging aeolian sand permeable brick loaded with nano-titanium dioxide on the surface and a preparation method thereof, which belongs to the field of sponge cities. The method includes the steps of: (1) preparing a permeable brick matrix with aeolian sand as the main raw material; (2) adding an appropriate amount of dispersant and a particle size of 5-100nm titanite-type nano-titanium dioxide into pure water, followed by ultrasonic treatment and magnetic stirring to obtain a nano-titanium dioxide dispersion; (3) the dispersion is sprayed or The leaching method is evenly loaded to the surface of the permeable brick, and the load per unit area is 50-200g / ㎡; (4) dried in an oven and kept for 4 hours to prepare a slow-clogging aeolian sand permeable brick loaded with nano-titanium dioxide coating. The aeolian sand permeable brick with nano-titanium dioxide on the surface of the present invention has cheap and easy-to-obtain base materials; the amount of nano-titanium dioxide is small and not easy to fall off, which weakens the adhesion of particles carried by runoff in the permeable brick, delays clogging and improves Water permeability.

Description

technical field [0001] The invention belongs to the technical field of sponge cities, and in particular relates to a slow-clogging aeolian sand permeable brick loaded with nano-titanium dioxide on the surface and a preparation method thereof. The water-permeable brick is improved by utilizing the hydrophilicity and photocatalysis of the nano-titanium dioxide loaded on the surface of the permeable brick performance. Background technique [0002] Permeable brick pavement is one of the technical measures of low-impact development (LID). Permeable bricks use their internal pores to significantly improve the urban environment, such as significantly reducing stormwater peaks, reducing rainwater pollution, reducing urban traffic noise, and weakening the urban heat island effect. In recent years, it has been promoted in the municipal field. However, the ubiquitous clogging problem directly affects its long-term working efficiency and becomes an important bottleneck restricting its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/622C04B38/06C04B41/50
CPCC04B35/14C04B35/622C04B38/0675C04B41/009C04B41/5041C04B41/87C04B2235/3208C04B2235/3472C04B2235/3481C04B2235/36C04B2235/5427C04B2235/5436C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B38/02C04B41/4535C04B41/5015C04B41/0072
Inventor 孙昕李盟陈晓薇解岳王松波王依豪
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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