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Method for preparing novel silver ion molecular sieve as antiseptic

A molecular sieve, silver ion technology, applied in the fields of botanical equipment and methods, molecular sieves and alkali exchange compounds, paints containing biocides, etc., can solve the problems of poor antibacterial effect and durability, poor dispersibility and compatibility of antibacterial materials, etc. To solve the effect of poor stability

Inactive Publication Date: 2012-06-20
宋树芹 +1
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the common problems such as the poor antibacterial effect and durability of the current antibacterial coatings, the poor dispersion and compatibility of antibacterial materials and resins, the purpose of the present invention is to provide a method for preparing a new type of silver ion molecular sieve antibacterial agent, using the unique rules of molecular sieves The nanopore structure realizes the slow release of silver ions, improves the durability of antibacterial ability, and greatly improves the compatibility and stability of the additive and coating

Method used

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  • Method for preparing novel silver ion molecular sieve as antiseptic
  • Method for preparing novel silver ion molecular sieve as antiseptic
  • Method for preparing novel silver ion molecular sieve as antiseptic

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preparation example Construction

[0022] The preparation process of novel silver ion molecular sieve antibacterial agent of the present invention, used raw material comprises aluminum source, silicon source, alkali, templating agent and water, adopts hydrothermal synthesis method, comprises following two steps:

[0023] (1) Preparation of molecular sieves with controllable particle size: the molar ratio of raw materials silicon source, aluminum source, templating agent, alkali and water is: Si / Al=0.5~15; OH - / Si=0.05~1; Template / SiO 2 =0.05~3;H 2 O / SiO 2 = 10-100, mixed and stirred to obtain a mixed solution, the mixed solution was subjected to hydrothermal synthesis at 60-200°C, and the solid product was taken out after 6-240 hours, washed with water and dried to obtain a crude molecular sieve product; the above-mentioned crude product 0.01-0.1M NaOH / H 2 O (heat treatment of dilute lye) heat treatment reaction at 50°C for 5 days to remove impurities on the surface, filter, and dry at 50-150°C under normal...

Embodiment 1

[0027] The first step: Molecular sieve preparation

[0028] 1. Take 2g of water, then add 2.25g of silicon source (Ludox SM-30, silica sol), and start stirring;

[0029] 2. Take 5.75g of water, add 5g of TMAOH (tetramethylammonium hydroxide) (25wt%), then add 0.75g of aluminum source (AIP, aluminum isopropoxide), stir slightly until it is completely dissolved;

[0030] 3. Take 1.62g of NaOH, dissolve it in 10g of water, stir evenly, take out 1.162g of the aqueous solution, and add it dropwise to the solution obtained in step 2 while stirring continuously;

[0031] 4. Slowly add the mixture obtained in step 1 into the solution obtained in step 3, stirring continuously for 24 hours;

[0032] 5. Put the synthesis solution obtained in the above step 4 into the reactor, and react at 100°C for 2 days;

[0033] 6. The final synthesized product is subjected to dilute lye (0.01-0.1M NaOH / H 2 (0) heat treatment (reaction for 5 days at 50° C.), to remove amorphous impurities present o...

Embodiment 2

[0041] A preparation method of a silver ion molecular sieve antibacterial agent. In this embodiment, except that the proportion of the reaction solution is: 3.75g silica sol: 5g TMAOH: 0.75g aluminum isopropoxide: 0.162gNaOH, the others are the same as in Example 1 to obtain silver ions Molecular sieve antibacterial agent.

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Abstract

The invention discloses a method for preparing novel silver ion molecular sieve as antiseptic, which includes: firstly, mixing and stirring a silicon source, an aluminum source, template agent, alkali and water according to a certain mole ratio to obtain mixed liquor, subjecting the mixed liquor to hydrothermal synthesis at 60-200 DEG C, taking out solid products after 6-240 hours, and washing and drying the solid products to obtain a crude molecular sieve; secondly, subjecting the crude product to thermal treatment in dilute alkali liquor to obtain a final molecular sieve product; and thirdly, subjecting the molecular sieve to sliver ion exchange prior to soaking in ionized water, and performing filtering and vacuum drying to obtain the silver ion molecular sieve as antiseptic. According to the specific regular nanopore structure of the molecular sieve, special formula and surface treatment techniques are used to implement different pore functional modifications and surface functional modifications, thereby implementing slow release of sliver ions, improving persistence of antibacterial property, and greatly improving stability of the additive and compatibility of the additive with paint.

Description

technical field [0001] The invention relates to a paint antibacterial additive, in particular to a preparation method of a novel silver ion molecular sieve antibacterial agent. Background technique [0002] By adding materials that can inhibit the growth of microorganisms into the paint, the purpose of anti-mildew and anti-bacteria can be achieved under the premise of maintaining the decorative properties of the paint. At the same time, the antibacterial material can effectively inhibit the corrosion of bacteria on the organic resin in the paint, thereby prolonging the service life of the paint. The application of antibacterial coatings is a simple and easy antibacterial method. Compared with traditional chemical sterilization and physical sterilization, it has the following advantages: safety, harmless to health, and no pollution to the environment; long-lasting, durable coating film The period of use of scrubbing is the same as that of the product; broad-spectrum, it can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/08A01P1/00C01B39/00C09D5/14
Inventor 宋树芹蔡睿
Owner 宋树芹
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