CN102318645A - Silver-containing antibacterial agent and preparation method thereof - Google Patents
Silver-containing antibacterial agent and preparation method thereof Download PDFInfo
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- CN102318645A CN102318645A CN201110138237A CN201110138237A CN102318645A CN 102318645 A CN102318645 A CN 102318645A CN 201110138237 A CN201110138237 A CN 201110138237A CN 201110138237 A CN201110138237 A CN 201110138237A CN 102318645 A CN102318645 A CN 102318645A
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Abstract
The invention discloses a silver-containing antibacterial agent and a preparation method thereof; the antibacterial agent is prepared by coating silver on stone powder surfaces, and mainly comprises 99-99.999 parts by weight of stone powder, and 0.001-1 parts by weight of silver, wherein the stone powder is powder obtained by pulverizing natural stone ore materials and has a mesh number of 100-10000; the silver is silver metal particles obtained by deposing silver ions on stone powder surfaces through chemical reduction. With the above scheme, the silver-containing antibacterial agent of the invention adopts stone powder which is commonly used as a filler in plastic products as a substrate, and allows the substrate to load a few silver components; because of a high using amount, the silver-containing antibacterial agent has high homogeneity in products, has low price, and has the characteristics of environmental protection. The silver-containing antibacterial agent of the invention has very good application advantages in plastic industry.
Description
Technical field
The present invention relates to the antibacterial agent field, specifically is a kind of silver-containing antibacterial agent and preparation method thereof.
Background technology
Along with growth in the living standard, people are to the understanding of living environment and require improving constantly, particularly to the consciousness of health also in continuous enhancing.Noxious bacteria is very extensive in distributed in nature, and of a great variety, and quantity is huge, and human beings'health in serious threat.Infect the disease that produces by spread of germs, constituted a great society problem, cause extensive concern.Thus, the scientific research personnel is devoted to research and develop various antibacterial agents and anti-biotic material, prevents the propagation of bacterium, reduces the infection of bacterium, improves quality of the life.
Antibacterial agent mainly divides organic and inorganic two big types.Organic antibacterial agent is synthetic type organic, and the characteristics of such antibacterial agent are that initial sterilizing power is strong, and the restraining and sterilizing bacteria effect is obvious, but poor heat resistance, generally in 200 ℃, the long-term use has outflow and separates out phenomenon, is prone to decompose, and antibacterial range is narrow.Inorganic antiseptic is an antibacterial agent with metal ions such as silver, zinc, copper generally, is carrier with the porous, inorganic nonmetallic materials, processes anti-biotic material.The bactericidal potency of such antibacterial agent is strong, and persistence is good.
Silver ion is that effect is best in several metal ion species, and to human body, the side effect of environment is little, but cost is higher.At present, in order to reduce cost, improve effect, people are through selecting different carrier such as bentonite; Active carbon, silica gel, nano titanium oxide etc., the one, utilize the specific surface area of its super large; The 2nd, utilize the clad structure of its porous, so that realize the load of silver, increase the releasing effect of silver.Invention utilizes active carbon appendix Nano Silver like CN 1308231C; The CN100432157C invention utilizes kaolin appendix silver, and silver particles is switched in the inorganic interlayer; 200810018312.X application utilizes nano attapulgite clay that silver is carried out appendix; 200810031600.9 the applicant utilizes nano titanium oxide that silver is carried out appendix.
More than the target of all kinds of inventions all are structures from carrier material, or the carrier of seeking is the cellular structure material, or is ultra-fine nanometer grade powder, to increase the specific surface area of carrier; Anti-biotic material through the preparation of this type technology generally can obtain the higher appendix silver of content, and therefore, its product cost is also high.Can add in the target product on a small quantity through the form of additive during application, as add plastic substrate to.Such antibacterial agent exists a bigger problem to be exactly in the interpolation modification of plastics or rubber etc. is used: its silver-colored content of antibacterial agent of general design is higher; Usually it is then very low to reach the needed silver content of antibacterial effect; Therefore; Often need the antibiotic powder of minute quantity be added in a large amount of objects in actual the use, this certainly will need to consider the scattering problem of interpolation process, to avoid causing local concentration higher; And the antibiotic component content on other ground is low excessively, maybe need realize through processes such as diffusions.In theory, the antibacterial agent silver content that is designed is high more, and the inhomogeneity of the antibiotic composition that it possibly cause is big more, influences the antibacterial effect of product.
Summary of the invention
The purpose of this invention is to provide a kind of in goods the higher silver-containing antibacterial agent of antibiotic composition homogeneity.
Another object of the present invention provides a kind of method for preparing above-mentioned silver-containing antibacterial agent.
To achieve these goals, the present invention adopts following technical scheme:
A kind of silver-containing antibacterial agent is coated on the stone flour surface by silver and forms, and mainly contains following parts by weight of component:
Stone flour 99-99.999 part
Silver 0.001-1 part
Wherein, described stone flour is meant that the order number is the 100-10000 order through pulverizing the powder that natural stone pit wood material gets; Described silver is meant that silver ion is deposited on the silver metal particle on said stone flour surface by electronation.
A kind of silver-containing antibacterial agent; Its preparation method is following: with 100 weight portion order numbers is that 100-10000 purpose stone flour is scattered in the distilled water; The liquor argenti nitratis ophthalmicus that to add hundred parts of specific concentrations of 1-8 weight portion quality again be 0.16-20%; Stir, the sodium borohydride solution that to drip hundred parts of specific concentrations of 1-8 weight portion quality again be 0.2-20% is green to mixed liquor; Leave standstill, with the mixed liquor suction filtration, 120-300 ℃ of oven dry down put in washing, just obtains the silver-containing antibacterial agent of powder shaped.
The consumption of above-mentioned distilled water is the 100-500 weight portion.
After adopting such scheme, silver-containing antibacterial agent of the present invention has following characteristics and advantage:
At first, it be adopt the plastic cement industry to be widely used packing material--stone flour is a matrix, a spot of silver-colored composition of appendix.(Main Ingredients and Appearance is a calcium carbonate owing to stone flour; And contain a certain proportion of silicate etc.) be the filler that generally uses in the plastic cement products; Usually consequently honest and clean is adding purpose, also The comprehensive performance is had certain modified effect, and addition is big; The general 10wt% that surpasses surpasses 50wt% in many occasions; An amount of silver-colored composition on the specific surface appendix of stone flour makes stone flour have antibiotic property, and when it is filled in the plastic substrate in a large number, because usage amount is high, the even property of its distribution in the goods various piece is higher.
Its two, stone flour is the filler commonly used of plastic cement, general plastic cement tradesman is clearer to its character, the technological process of the complex plastic of processing, processing and use need not to increase and decrease operation; In addition, the tradesman is familiar with to the modification of stone flour and with the character of the compatibility of resin, and is easy to use.
Its three, stone flour is the mine elaboration products mostly, or the accessory substance of granite sheet material processing, and it is carried out antibacterial treatment, improves and uses grade, and is not only cheap, also has the environmental protection characteristic.
Therefore, silver-containing antibacterial powder of the present invention will have good application advantage in the plastic cement industry.
Embodiment
Silver-containing antibacterial agent of the present invention is coated on the stone flour surface by silver and forms, and mainly contains following parts by weight of component:
Stone flour 99-99.999 part
Silver 0.001-1 part
Wherein, described stone flour is meant that the order number is the 100-10000 order through pulverizing the powder that natural stone pit wood material gets; Described silver is meant that silver ion is deposited on the silver metal particle on said stone flour surface by electronation.
Embodiment one:
With the order number is 325 purpose stone flours 100 grams, is scattered in 100 milliliters the distilled water; The dropping mass percent concentration is 0.16% liquor argenti nitratis ophthalmicus 1.0 grams, stirs; Drip mass percent concentration again and be 0.2% sodium borohydride aqueous solution 1.0 grams, stir again.Left standstill 5 minutes, mixed liquor is filtered, washing places 120 ℃ of oven dry down, obtains the silver-containing antibacterial agent of powder shaped.The silver content of the resulting silver-containing antibacterial agent of present embodiment is 0.001wt%.
Embodiment two:
With the order number is 325 purpose stone flours 100 grams, is scattered in 100 milliliters the distilled water; The dropping mass percent concentration is 20% liquor argenti nitratis ophthalmicus 8 grams, stirs; Drip mass percent concentration again and be 20% sodium borohydride aqueous solution 8 grams, stir again.Left standstill 5 minutes, mixed liquor is filtered, washing places 300 ℃ of oven dry down, obtains the silver-containing antibacterial agent of powder shaped.The silver content of the resulting silver-containing antibacterial agent of present embodiment is 1.0wt%.
Embodiment three:
With the order number is 100 purpose stone flours 100 grams, is scattered in 100 milliliters the distilled water; The dropping mass percent concentration is 1% liquor argenti nitratis ophthalmicus 1.0 grams, stirs; Drip mass percent concentration again and be 10% sodium borohydride aqueous solution 1.0 grams, stir.Left standstill 5 minutes, mixed liquor is filtered, washing as for 200 ℃ of oven dry down, obtains the silver-containing antibacterial agent of powder shaped.The silver content of the resulting silver-containing antibacterial agent of present embodiment is 0.0064wt%.
Embodiment four:
With the order number is 8000 purpose stone flours 100 grams, is scattered in 200 milliliters the distilled water; The dropping mass percent concentration is 10% liquor argenti nitratis ophthalmicus 5 grams, stirs; Drip mass percent concentration again and be 10% sodium borohydride aqueous solution 5 grams, stir.Left standstill 5 minutes, mixed liquor is filtered, washing as for 300 ℃ of oven dry down, obtains the silver-containing antibacterial agent of powder shaped.The silver content of the resulting silver-containing antibacterial agent of present embodiment is 0.32wt%.
Embodiment five:
With the order number is 10000 purpose stone flours 100 grams, is scattered in 500 milliliters the distilled water; The dropping mass percent concentration is 10% liquor argenti nitratis ophthalmicus 8.0 grams, stirs; Drip mass percent concentration again and be 10% sodium borohydride aqueous solution 8.0 grams, stir.Left standstill 5 minutes, mixed liquor is filtered, washing as for 300 ℃ of oven dry down, obtains the silver-containing antibacterial agent of powder shaped.The silver content of the resulting silver-containing antibacterial agent of present embodiment is 0.5wt%.
Claims (3)
1. silver-containing antibacterial agent is characterized in that: be coated on the stone flour surface by silver and form, mainly contain following parts by weight of component:
Stone flour 99-99.999 part
Silver 0.001-1 part
Wherein, described stone flour is meant that the order number is the 100-10000 order through pulverizing the powder that natural stone pit wood material gets; Described silver is meant that silver ion is deposited on the silver metal particle on said stone flour surface by electronation.
2. the preparation method of a silver-containing antibacterial agent; Realize through following scheme: with 100 weight portion order numbers is that 100-10000 purpose stone flour is scattered in the distilled water; The liquor argenti nitratis ophthalmicus that to add hundred parts of specific concentrations of 1-8 weight portion quality again be 0.16-20%; Stir, the sodium borohydride solution that to drip hundred parts of specific concentrations of 1-8 weight portion quality again be 0.2-20% is green to mixed liquor; Leave standstill, with the mixed liquor suction filtration, 120-300 ℃ of oven dry down put in washing, just obtains the silver-containing antibacterial agent of powder shaped.
3. the preparation method of a kind of silver-containing antibacterial agent according to claim 2, realize through following scheme: the consumption of above-mentioned distilled water is the 100-500 weight portion.
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| CN201110138237.2A CN102318645B (en) | 2011-05-25 | 2011-05-25 | Silver-containing antibacterial agent and preparation method thereof |
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| CN201110138237.2A CN102318645B (en) | 2011-05-25 | 2011-05-25 | Silver-containing antibacterial agent and preparation method thereof |
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| CN102318645A true CN102318645A (en) | 2012-01-18 |
| CN102318645B CN102318645B (en) | 2014-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749222A (en) * | 2019-01-30 | 2019-05-14 | 晋江市石达塑胶精细有限公司 | Utilize high concentration EVA Masterbatch and preparation method thereof made from EVA waste material |
| CN113402736A (en) * | 2021-07-02 | 2021-09-17 | 晋江市石达塑胶精细有限公司 | Antibacterial color master batch and preparation method thereof |
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2011
- 2011-05-25 CN CN201110138237.2A patent/CN102318645B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749222A (en) * | 2019-01-30 | 2019-05-14 | 晋江市石达塑胶精细有限公司 | Utilize high concentration EVA Masterbatch and preparation method thereof made from EVA waste material |
| CN113402736A (en) * | 2021-07-02 | 2021-09-17 | 晋江市石达塑胶精细有限公司 | Antibacterial color master batch and preparation method thereof |
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| CN102318645B (en) | 2014-04-16 |
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