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Method for preparing self-antifouling sanitation cement product

A technology for finished products and cement, applied in the field of preparation of self-anti-fouling and cleaning cement products, can solve the problems of titanium oxide sol film formation and poor anti-fouling performance, etc., so as to solve the problem of poor performance and save the heat treatment process. Effect

Inactive Publication Date: 2009-06-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing self-fouling and cleaning cement products, which solves the problems of titanium oxide sol forming a film on the surface of cement products and poor antifouling performance

Method used

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  • Method for preparing self-antifouling sanitation cement product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Dissolve ferric nitrate and lanthanum nitrate (weight ratio 1:1) in distilled water, adjust the pH value of the solution to 0.1 with nitric acid, and prepare ferric nitrate and lanthanum nitrate solution, the weight ratio of distilled water to ferric nitrate and lanthanum nitrate is 1;

[0030] (2) Under stirring conditions, add butyl titanate to dehydrated ethanol for dilution, the mass ratio of dehydrated alcohol to titanium salt is 1, stir to obtain butyl titanate ethanol solution;

[0031] (3) Add butyl titanate ethanol solution dropwise to ferric nitrate and lanthanum nitrate solution in a water bath at 5°C. The mass ratio of ferric nitrate and lanthanum nitrate solution to butyl titanate ethanol solution is 50. After full reaction , standing for 5 hours to obtain anatase crystal titanium sol;

[0032] (4) Get the styrene-acrylic emulsion, pre-coat on the surface of the cement board, form a film, dry, and form an isolation layer;

[0033] (5) Take the anatase...

Embodiment 2

[0035] (1) Triethylamine is dissolved in deionized water, and the pH value of the solution is adjusted to 5 with hydrochloric acid to obtain triethylamine solution, and the mass ratio of deionized water to triethylamine is 500;

[0036] (2) under stirring condition, titanium tetrachloride is added in ethylene glycol and diluted, and the mass ratio of ethylene glycol and titanium tetrachloride is 10, stirs and makes titanium tetrachloride ethylene glycol solution;

[0037] (3) Add the titanium tetrachloride ethylene glycol solution dropwise to the triethylamine solution in a water bath at 95°C. The mass ratio of the triethylamine solution to the titanium tetrachloride ethylene glycol solution is 500. After fully reacting , and then left to stand for 1 hour to obtain anatase crystal titanium sol;

[0038] (4) Get the acrylic resin paint, pre-coat on the cement road surface, form a film, dry, and form the isolation layer;

[0039] (5) Take the anatase crystal titanium sol, spray...

Embodiment 3

[0041] (1) Dissolving ethyl orthosilicate in deionized water, while adjusting the pH value of the solution to 2.5 with sulfuric acid, the weight ratio of deionized water to ethyl orthosilicate is 1 to 80;

[0042] (2) under stirring condition, butyl titanate is added in isopropanol to dilute, and the mass ratio of isopropanol to butyl titanate is 3, stirs to obtain butyl titanate isopropanol solution;

[0043] (3) Add the butyl titanate isopropanol solution dropwise to the solution obtained in step (1), the mass ratio of the solution obtained in step (1) to the butyl titanate isopropanol solution is 100, at 35°C water bath temperature After fully reacting, leave it still for 20 hours to obtain anatase crystal titanium sol;

[0044] (4) Get the fluorocarbon resin coating, pre-coat on the cement brick surface, form a film, dry, and form an isolation layer;

[0045] (5) Take the anatase crystal titanium sol, cast it on the surface of the cement road brick coated with the fluoroc...

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Abstract

The invention discloses a preparation method of a self-antifouling and cleaning cement product, comprising: (1) pre-coating resin on the surface of the cement product to form a film and drying; (2) coating the anatase crystal titanium sol Form a film on the surface of cement products that have been coated with resin, and dry. The preparation method of the present invention pre-coats a layer of resin on the surface of the cement product to seal the micropores on the surface of the cement product and form a smooth and dense isolation layer, which solves the problem of the use of titanium oxide on the surface of the cement product. The defect of poor performance at the time improves the film-forming and antifouling properties of anatase crystal titanium sol.

Description

technical field [0001] The invention relates to the field of material science, in particular to a method for preparing self-fouling and cleaning cement products. Background technique [0002] Titanium oxide sol is applied on the surface of ceramic or glass. The titanium oxide in the sol has a super strong oxidation ability under the action of sunlight, fluorescent lamp or ultraviolet light, which can destroy the protein of bacteria, decompose organic matter and harmful gas, and can prevent pollution, sterilize, Self-cleaning and purifying air. [0003] Pure titanium oxide must be excited by ultraviolet light, and the utilization rate of daily visible light is low. Many researchers increase the utilization of visible light by ion doping and semiconductor recombination to improve its antifouling and self-cleaning properties, but heat treatment is required. Therefore, the existing preparation methods are difficult to apply to substrates such as cement products that are not ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/71C04B41/63C04B41/65
CPCC04B41/52C04B41/009
Inventor 高基伟杨辉申乾宏
Owner ZHEJIANG UNIV
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