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High temperature resistant inorganic antimicrobial material and preparation method thereof

An inorganic antibacterial material, high temperature resistant technology, applied in botanical equipment and methods, chemicals for biological control, animal repellents, etc. The problem of low utilization efficiency of components, etc., achieves the effect of improving the effective specific surface area, low cost, and high thermal decomposition temperature

Inactive Publication Date: 2009-06-24
HEFEI CHUANGYUAN ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in Chinese patent CN00109397.5, copper ions are implanted into the interlayer of vermiculite to make vermiculite-based inorganic antibacterial materials; in patent CN00122811.0, acid-activated palygorskite is used as a carrier, and silver and copper ions are used as antibacterial components. Preparation of antibacterial materials; patent CN02129700.2 uses stilbite to support zinc ions to synthesize antibacterial materials. However, when some applications (such as ceramic industry, etc.) Insufficient thermal properties, such as the thermal stability of clay minerals such as vermiculite and palygorskite is only 600°C, and that of stilbite is about 800°C, which is difficult to meet the relevant requirements
There is a patent to use nano-scale hydroxyapatite (patent CN02134722.0) and fluorapatite (CN patent 02129370.8) as carriers to develop high-temperature-resistant antibacterial materials with heat-resistant temperatures of 1200°C and 1350°C respectively. The prepared Antibacterial materials are all nano-scale powders. According to the known facts (Zhang Lide et al., 2002), nanoparticles are prone to agglomeration, which will significantly reduce the effective specific surface area of ​​nanomaterials, thereby reducing the utilization efficiency of nanoparticles
Therefore, the utilization efficiency of antibacterial components of antibacterial materials prepared in this way is low

Method used

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  • High temperature resistant inorganic antimicrobial material and preparation method thereof

Examples

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Embodiment 1

[0039] This embodiment includes a preparation method of a silver-loaded hydroxyapatite-diatomite antibacterial material, and an antibacterial property test on the prepared antibacterial material powder.

[0040] 1. Weigh 32g (NH 4 ) 2 HPO 4 , dissolved in 6L deionized water, placed in a 10L reaction kettle, and adjusted to pH 11.0 by adding ammonia water; this is the reaction solution A;

[0041] 2. Accurately weigh 94g Ca(NO 3 ) 2 .4H 2 O, and 4g AgNO 3 , dissolved in 1L of water. This is reaction solution B;

[0042] 3. Under the condition of constant stirring, slowly add the reaction solution B into the reaction solution A, and stir for 2 hours;

[0043] 4. Disperse 100 g of diatomaceous earth with a diatom shell content of 90% in 1 L of water, and stir well to form a suspension. Add this suspension to the mixed reaction solution in step 3, and fully stir for 20 hours to obtain a mixed suspension;

[0044] 5. After the mixed suspension was left to settle for 24 ho...

Embodiment 2

[0049] This example includes a method for preparing a zinc-copper hydroxyapatite-diatomite antibacterial material, and using the obtained antibacterial material powder to prepare an antibacterial plastic plate and conduct an antibacterial performance test.

[0050] 1. Weigh 16g (NH 4 ) 2 HPO 4 , dissolved in 3L deionized water, adjusted to pH 12.0 with ammonia water, this is reaction solution 1;

[0051] 2. Weigh 47g Ca(NO 3 ) 2 .4H 2 O, 1.6gCu(NO 3 ) 2 , 1.6gZn(NO 3 ) 2 , and 40g of diatomaceous earth with a diatom shell content of 90%, dissolved in 2L of water, and stirred evenly, this is the reaction solution 2;

[0052] 3. Slowly add the reaction solution 2 to the reaction solution 1 at a temperature of 100°C and constant stirring, stir for 6 hours, and age for 24 hours;

[0053] 4. Centrifuge the mixture, rinse the precipitate with water until the filtrate is neutral, and there is no Cu in the filtrate 2+ and Zn 2+ until;

[0054] 5. Dry the precipitate at 10...

Embodiment 3

[0058] This example describes an example of using the inorganic antibacterial material prepared in Example 1 to prepare antibacterial porous ceramics, and to test the antibacterial properties of the antibacterial ceramic powder.

[0059] The method is: take the inorganic antibacterial composite material powder and pore-forming agent (commercially available natural organic fine powder) obtained in Example 1, cross 200 mesh sieves, and be 2.5 water glass (bonding agent) with silicon-sodium ratio Mixed together, the mass ratio of the three raw materials is antibacterial powder: pore forming agent: binder = 50:49:1. The mixture is fully ground and granulated, pressed under a pressure of 5MPa, and then fired at 1200°C for 3 hours to obtain an antibacterial porous ceramic product. After determination, the porosity of the product is 68%, and the bulk density is 0.83g / cm 3 , the compressive strength is 6.3MPa, and the maximum pore size is about 6.9μm.

[0060] The antibacterial cera...

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Abstract

The invention relates to a high temperature resistant abio-antibiosis materials and preparation method, using nm hydroxyapatite of loading antibiotic metal and micron order and porous diatomite minerals as raw materials, thereby realizing compound of nm hydroxyapatite of loading antibiotic metal and diatomite. The specific preparation method comprises the steps of: using nm hydroxyapatite Ca10(PO4)6(OH)2 as the carrier, adding antibiotic metal salt of silver, zinc, and copper and the like, wherein antibiotic metal ions account for 1-8% of the total weight of antibiotic materials; then adding diatomite for mixed reaction, prepared through solid-liquid separation, drying, crushing and high temperature calcination and the like. The materials have excellent micro organism resistance and fire resisting quality, and can be directly applied or applied as functional additives in all industrial fields of antibiotic and disinfectant process and the field of high-temperature machined ceramics.

Description

technical field [0001] The invention relates to a high-temperature-resistant inorganic antibacterial material in the field of antibacterial, disinfection treatment and related antibacterial products and a preparation method thereof. Background technique [0002] With the continuous improvement of people's health and hygiene requirements, the research and application of antibacterial technology has been paid more and more attention by relevant departments, scientific research institutions and business circles. At present, a main method of preparing inorganic antibacterial materials is to use an inorganic carrier to load antibacterial metal ions (or compounds) to form a composite, so that the composite has antibacterial properties. The existing patented technology uses inorganic carrier and antibacterial metal salt to compound to realize the preparation of different types of inorganic antibacterial materials, but there are various disadvantages in terms of material properties....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N59/26A01P1/00
Inventor 颜文昌袁鹏詹建华姜允宏
Owner HEFEI CHUANGYUAN ENVIRONMENT ENG
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