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Method for preparing antimicrobial material using nano calcium carbonate as substrate

A nano-calcium carbonate, antibacterial material technology, applied in the fields of botanical equipment and methods, fungicides, chemicals for biological control, etc., can solve the problems of narrow adaptability, high preparation cost, low product whiteness, etc. Wide application range, low preparation cost, high whiteness effect

Inactive Publication Date: 2009-07-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: provide the preparation method of the antibacterial material that takes nano-calcium carbonate as the matrix, thus make the antibacterial material with nano-calcium carbonate as the matrix not only have higher antibacterial performance, overcome the prior art method simultaneously The disadvantages of high preparation cost, high energy consumption, low whiteness of the product and narrow application range

Method used

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  • Method for preparing antimicrobial material using nano calcium carbonate as substrate
  • Method for preparing antimicrobial material using nano calcium carbonate as substrate
  • Method for preparing antimicrobial material using nano calcium carbonate as substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step is to prepare nano-calcium carbonate matrix slurry

[0033] At a temperature of 20°C, to the Ca(OH) 2 The mass percent concentration of 0.7mol is 5% Ca(OH) 2 In the slurry, add 0.0175mol of sodium hydroxide, pass into CO 2 , carbonized to the pH=10 of the slurry, thereby preparing the nano-calcium carbonate matrix slurry, which is transferred to a stirred reactor for use;

[0034] The second step is to prepare antibacterial materials with nano-calcium carbonate as the matrix

[0035] Under normal temperature, normal pressure and stirring, add 0.07mol titanium sulfate and 0.0014mol silver nitrate to the nano-calcium carbonate matrix slurry prepared in the first step, finally add phosphoric acid to the pH=7 of the slurry, and carry out suction filtration after 3 hours of reaction, The obtained filter cake was dried at 100° C. to obtain 70 g of product 1 of an antibacterial material with nano-calcium carbonate as a matrix.

Embodiment 2

[0037] The first step is to prepare nano-calcium carbonate matrix slurry

[0038] At a temperature of 25°C, to the Ca(OH) 2 The mass percent concentration of 0.946mol is 7% Ca(OH) 2 In the slurry, add 0.00015mol sodium hexametaphosphate, pass CO 2 , carbonized to the molar ratio M(CaCO 3 ) / M(Ca(OH) 2 )=6:2, make nano-calcium carbonate matrix slurry thus, this slurry is transferred in the reactor with agitation stand-by;

[0039] The second step is to prepare antibacterial materials with nano-calcium carbonate as the matrix

[0040]Under normal temperature, normal pressure and stirring, add the silver nitrate of the titanium nitrate of 0.227mol, the sodium pyrophosphate of 0.0426mol and the silver nitrate of 0.00236mol in the nano-calcium carbonate matrix slurry that the first step makes, after reacting for 3h, carry out suction filtration, will Gained filter cake is dried at 100 ℃, promptly makes the antibacterial material 92g product 2 with nano-calcium carbonate as matr...

Embodiment 3

[0043] The first step is to prepare nano-calcium carbonate matrix slurry

[0044] At a temperature of 15°C, to the Ca(OH) 2 The mass percent concentration of 1.081mol is 8% Ca(OH) 2 In the slurry, add 0.027mol of sodium hydroxide, pass into CO 2 , carbonized to the molar ratio M(CaCO 3 ) / M(Ca(OH) 2 )=5:1, thus making the nano-calcium carbonate matrix slurry, the slurry is transferred to a stirred reactor for use;

[0045] The second step is to prepare antibacterial materials with nano-calcium carbonate as the matrix

[0046] Under normal temperature, normal pressure and stirring, add the sodium silicate of 0.2162mol, the titanium nitrate of 0.0757mol and the silver nitrate of 0.0027mol in the nano calcium carbonate matrix slurry that the first step makes, finally add phosphoric acid to the pH= of slurry 7. After reacting for 4 hours, carry out suction filtration, and dry the resulting filter cake at 100°C to obtain 104g of product 3, an antibacterial material with nano-ca...

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Abstract

The invention relates to a method for preparing an antibacterial material by using nanometer calcium carbonate as a basal boy, which belongs to the field of biocide containing inorganic compounds. The method comprises the following steps: a dispersant is added to Ca(OH)2 slurry and is carbonized by pumping CO2 to prepare the slurry of the nanometer calcium carbonate basal body; titanium salt or / and zinc salt, silver salt and phosphate or phosphoric acid are mainly added to the slurry, or silicate is also added to the slurry; after 1 to 4 hours of reaction of the slurry, the slurry is sucked, filtered and dried so as to obtain the antibacterial material using the nanometer calcium carbonate as the basal boy. The method has lower cost, simple technology and low energy consumption, and the prepared antibacterial material product has higher antibacterial performance, higher whiteness and wide range of application.

Description

technical field [0001] The invention belongs to the field of biocides containing inorganic compounds, in particular to a method for preparing an antibacterial material based on nanometer calcium carbonate. Background technique [0002] With the improvement of living standards and the enhancement of health care awareness, people pay more and more attention to the sanitation of their work and family environment, and try to reduce the damage of bacteria in the surrounding environment to the human body as much as possible. However, environmental pollution, pathogenic microorganisms and viruses have brought great threats to human beings. Therefore, countries all over the world are actively developing antibacterial materials and their products. [0003] Inorganic antibacterial materials are favored because of their easy industrialization, broad antibacterial spectrum, and good temperature resistance. The main components of existing inorganic antibacterial materials are loaded sil...

Claims

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Application Information

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IPC IPC(8): A01N59/00A01N59/02A01N59/16A01N59/26A01N25/08A01P3/00
Inventor 胡琳娜董鹏飞张广林赵艳丽
Owner HEBEI UNIV OF TECH
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