A method of preparation of titanium pink powder with antibacterial coatings

A technology of antibacterial coatings and titanium dioxide, applied in antifouling/underwater coatings, chemical instruments and methods, fibrous fillers, etc., to overcome zinc-based skin irritation, make up for low antibacterial efficiency, and overcome high costs

Active Publication Date: 2021-11-12
HENAN BILLIONS NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Second, these defects also generate a large amount of active oxygen ions O 2 - , so that nano-MgO has a strong ability to inhibit bacteria, kill bacteria and decompose some compounds

Method used

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  • A method of preparation of titanium pink powder with antibacterial coatings
  • A method of preparation of titanium pink powder with antibacterial coatings
  • A method of preparation of titanium pink powder with antibacterial coatings

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[0025] The preparation method of antibacterial coating titanium dioxide provided by the invention comprises the following steps:

[0026] S1: Prepare titanium dioxide-based material slurry, adjust the pH of the slurry to 7-11, add a dispersant, and homogenize; under the condition of pH 7-11, titanium dioxide particles are most easily dispersed by the dispersant;

[0027] S2: Adjust the pH of the slurry to 7-8, add magnesium silicate, then adjust the pH of the slurry to 2-3, homogenize to form a silicon coating layer, which can block the direct irradiation of ultraviolet rays on titanium dioxide particles, so as to improve the weather resistance of the product sex;

[0028] S3: Adjust the pH of the slurry to 8.5-12, and homogenize to form a magnesium coating layer to improve the antibacterial property of the product;

[0029] S4: Add aluminum source and pH regulator at the same time, homogenize, form aluminum coating layer, improve product dispersibility.

[0030] The present...

Embodiment 1

[0044] After the uncoated sulfuric acid process titanium dioxide is pulverized, wet-milled, sand-milled and diluted, the slurry concentration is 300g / L (based on TiO 2 meter), the pH of the slurry is 8.3, start stirring, and heat up to 70°C; add TiO in the slurry within 10min 2 Sodium hexametaphosphate with a mass of 0.2% was homogenized for 10 minutes; the pH of the slurry was adjusted to 7.8, and TiO in the slurry was added to the slurry 2 3% magnesium silicate by mass; use dilute H within 60 minutes 2 SO 4 Adjust the pH value of the slurry to 2.5, and homogenize for 20 minutes; use dilute NaOH to adjust the pH value of the slurry to 9, and homogenize for 20 minutes; add TiO in the slurry at the same time 2 Mass 2% NaAlO 2 solution and dilute H 2 SO 4 Solution, maintain co-current pH = 8.0, add time 60min, homogenize 30min; use dilute H 2 SO 4 Adjust pH=5.5, adjust for 30 minutes, homogenize for 120 minutes; wash with water, flash evaporate, steam powder to obtain the...

Embodiment 2

[0047] After pulverization, wet grinding, sand grinding and dilution of uncoated sulfuric acid process titanium dioxide, the slurry concentration is 270g / L, the pH of the slurry is 8.3, start stirring, and heat up to 80°C; add 0.2% six Sodium metaphosphate, homogenize for 10 minutes; adjust the pH of the slurry to 8.0, add 5% magnesium silicate to the slurry; use dilute H 2 SO 4 Adjust the pH value of the slurry to 2.3, homogenize for 20 minutes; adjust the pH value of the slurry with dilute NaOH to 9 within 60 minutes, and homogenize for 20 minutes; add 1% NaAlO at the same time 2 solution and dilute H 2 SO 4 Solution, maintain co-current pH = 8.0, add time 60min, homogenize 30min; use dilute H 2 SO 4 Adjust pH=5.5, adjust for 30 minutes, homogenize for 120 minutes; wash with water, flash evaporate, steam powder to obtain the product.

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Abstract

The invention discloses a preparation method of titanium dioxide for antibacterial coatings, comprising the following steps: S1: preparing a titanium dioxide-based material slurry, adjusting the pH of the slurry to 7-11, adding a dispersant, and homogenizing; S2: adjusting the pH of the slurry to 7-8, add magnesium silicate, then adjust the pH of the slurry to 2-3, homogenize to form a silicon coating layer; S3: then adjust the pH of the slurry to 8.5-12, homogenize to form a magnesium coating layer ; S4: adding the aluminum source and the pH regulator at the same time, homogenizing, and forming an aluminum coating layer. In the present invention, through special surface treatment of titanium dioxide, the antibacterial agent and titanium dioxide are organically combined without agglomeration or metal ions chelated with free carboxyl groups, and the storage stability of the antibacterial coating can be improved.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide preparation, and in particular relates to a preparation method of titanium dioxide for antibacterial coatings. Background technique [0002] Titanium dioxide is a very important raw material in chemical production, especially in coatings. With the development of society, there are antibacterial needs in people's daily life and many fields, and antibacterial coatings have emerged as the times require. Antibacterial coatings used in households can effectively reduce the bacterial density of living rooms, furniture, and home appliances. Used in public places, they can effectively reduce the possibility of cross-infection and contact infection. Used in food and pharmaceutical processing, they can prevent food and pharmaceuticals from being infected by microorganisms. pollute. [0003] Antibacterial agents for coatings mainly include natural antibacterial agents, organic antibacterial agents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/06C09D5/14
CPCC09C1/3661C09C3/063C09D5/14
Inventor 陈建立王欢欢王永珊娄晓杰王静曹青喜郭永阳冯亚阳赵姗姗李瑞瑞许菲菲
Owner HENAN BILLIONS NEW MATERIAL CO LTD
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