CN111518429A - Antibacterial and bactericidal material for paint and preparation method and application thereof - Google Patents
Antibacterial and bactericidal material for paint and preparation method and application thereof Download PDFInfo
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- CN111518429A CN111518429A CN202010302417.9A CN202010302417A CN111518429A CN 111518429 A CN111518429 A CN 111518429A CN 202010302417 A CN202010302417 A CN 202010302417A CN 111518429 A CN111518429 A CN 111518429A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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Abstract
The invention discloses an antibacterial and bactericidal material for paint, which is prepared from the following raw materials: modified nano zinc oxide, a thickening agent, dipotassium glycyrrhizinate, an activating agent, chitosan, poly diallyl dimethyl ammonium chloride and deionized water. The antibacterial and bactericidal material for the coating has excellent antibacterial and bactericidal performance, has good killing capacity on various bacteria and viruses such as escherichia coli, staphylococcus aureus, pseudomonas subtilis, salmonella, pseudomonas aeruginosa and the like, and has excellent anti-aging performance; the antibacterial and bactericidal material can exert good antibacterial and bactericidal effects and anti-aging effects by only adding 2% of the antibacterial and bactericidal material in the paint, can effectively save cost, and has wide application; the invention obviously improves the antibacterial and bactericidal performance and the anti-aging performance of the antibacterial and bactericidal paint material by modifying the nano zinc oxide and adding the activating agent.
Description
Technical Field
The invention relates to the technical field of coating additives, in particular to an antibacterial and bactericidal material for a coating and a preparation method and application thereof.
Background
The controllable synthesis of nano material is an important research content in modern material science, wherein the selection and dosage of surfactant can reduce the aggregation degree of particles in a dispersion system, keep the dispersion system relatively stable, and have very important influence on the properties of nano particles, the nano material has very large specific surface area, the surface atom number, surface energy and surface tension are increased rapidly along with the reduction of particle size, and the thermal, magnetic, optical, sensitive characteristics and surface stability of nano particles are different from those of conventional particles due to small size effect, surface effect, quantum size effect, macroscopic quantum tunneling effect and the like.
At present, the coating has large consumption in the industries of buildings, vehicles, military affairs, decoration and ships, is closely related to the life of people, along with the continuous development of scientific technology, the variety of materials for the coating is various, the research and practical range of the coating is wider and wider in recent years, particularly, the indoor coating has antibacterial requirements on the performance of the coating, the coating on the market has general antibacterial performance, dust is easy to attach, the service life is shorter, the ageing resistance period of the existing coating is short, and the defects of easy ageing, peeling, easy falling, color change, poor weather resistance, toxicity, odor, inconvenient construction and the like exist more or less; and short service life when the building is outdoors.
Disclosure of Invention
The invention provides an antibacterial and bactericidal material for paint, and a preparation method and application thereof.
The invention adopts the following technical scheme for solving the technical problems:
an antibacterial and bactericidal material for paint is prepared from the following raw materials in parts by weight: 80-90 parts of modified nano zinc oxide, 0.2-0.6 part of thickening agent, 0.5-1.5 parts of dipotassium glycyrrhizinate, 6-8 parts of activating agent, 1-3 parts of chitosan, 0.8-1.5 parts of poly (diallyldimethylammonium chloride) and 140-160 parts of deionized water.
As a most preferable scheme, the antibacterial and bactericidal material for the coating is prepared from the following raw materials in parts by weight: 85 parts of modified nano zinc oxide, 0.4 part of hydroxyethyl cellulose, 1 part of dipotassium glycyrrhizinate, 7 parts of activating agent, 2 parts of chitosan, 1.2 parts of polydiallyl dimethyl ammonium chloride and 150 parts of deionized water.
Preferably, the thickener is one or more of hydroxyethyl cellulose, hydroxypropyl starch, xanthan gum and inorganic salt.
As a most preferred embodiment, the thickener is hydroxyethyl cellulose.
As a preferable scheme, the preparation method of the modified nano zinc oxide comprises the following steps: adding 4-8 parts of sodium silicate into 24-28 parts of water, heating to 60-80 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 20-30 ℃, adding 8-12 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 10-20 min, adding 0.5-0.8 part of aluminum sulfate, uniformly stirring, adding 0.1-0.2 part of triisostearoyl isopropyl titanate and 0.1-0.4 part of isopropanol, heating to 70-80 ℃, filtering, washing with ethanol for 2-4 times, drying, and grinding to obtain the modified nano zinc oxide.
As a most preferable scheme, the preparation method of the modified nano zinc oxide comprises the following steps: adding 6 parts of sodium silicate into 26 parts of water, heating to 70 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 25 ℃, adding 10 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 15min, adding 0.7 part of aluminum sulfate, uniformly stirring, adding 0.15 part of triisostearoyl isopropyl titanate and 0.25 part of isopropanol, heating to 75 ℃, filtering, washing for 3 times with ethanol, drying, and grinding to obtain the modified nano zinc oxide.
Preferably, the grinding step is carried out to a mesh size of 40-60.
As a most preferred option, the grinding step is to a 50 mesh.
As a preferable scheme, the activating agent is prepared from the following raw materials in parts by weight: 4-8 parts of citric acid, 2-4 parts of hydrochloric acid, 1-3 parts of stearic acid, 1.5-2.5 parts of fatty alcohol-polyoxyethylene ether and 0.5-1.5 parts of naphthylacetic acid.
As a most preferable scheme, the activating agent is prepared from the following raw materials in parts by weight: 6 parts of citric acid, 3 parts of hydrochloric acid, 2 parts of stearic acid, 2 parts of fatty alcohol-polyoxyethylene ether and 1 part of naphthylacetic acid.
As a preferred scheme, the preparation method of the activating agent comprises the following steps: adding citric acid and stearic acid into hydrochloric acid, heating to 50-70 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
As a most preferred embodiment, the preparation method of the activator is: adding citric acid and stearic acid into hydrochloric acid, heating to 60 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
The invention also provides a preparation method of the antibacterial and bactericidal material for the coating, which comprises the following steps:
(1) dissolving a thickening agent, dipotassium glycyrrhizinate, chitosan and poly (diallyldimethylammonium chloride) in deionized water, heating to 60-80 ℃, and uniformly stirring;
(2) and adding the modified nano zinc oxide and the activating agent, uniformly stirring and drying to obtain the coating antibacterial and bactericidal material.
Preferably, the stirring speed in the stirring step is 450-550 rpm.
The invention also provides application of the antibacterial and bactericidal material in preparation of the coating.
The invention has the beneficial effects that: (1) the antibacterial and bactericidal material for the coating has excellent antibacterial and bactericidal performance, has good killing capacity on various bacteria and viruses such as escherichia coli, staphylococcus aureus, pseudomonas subtilis, salmonella, pseudomonas aeruginosa and the like, and has excellent anti-aging performance; (2) the antibacterial and bactericidal material can exert good antibacterial and bactericidal effects and anti-aging effects by only adding 2% of the antibacterial and bactericidal material in the paint, can effectively save cost, and has wide application; (3) the invention obviously improves the antibacterial and bactericidal performance and the anti-aging performance of the antibacterial and bactericidal paint material by modifying the nano zinc oxide and adding the activating agent.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An antibacterial and bactericidal material for paint is prepared from the following raw materials in parts by weight: 85 parts of modified nano zinc oxide, 0.4 part of hydroxyethyl cellulose, 1 part of dipotassium glycyrrhizinate, 7 parts of activating agent, 2 parts of chitosan, 1.2 parts of polydiallyl dimethyl ammonium chloride and 150 parts of deionized water.
The preparation method of the modified nano zinc oxide comprises the following steps: adding 6 parts of sodium silicate into 26 parts of water, heating to 70 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 25 ℃, adding 10 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 15min, adding 0.7 part of aluminum sulfate, uniformly stirring, adding 0.15 part of triisostearoyl isopropyl titanate and 0.25 part of isopropanol, heating to 75 ℃, filtering, washing for 3 times with ethanol, drying, and grinding to 50 meshes to obtain the modified nano zinc oxide.
The activating agent is prepared from the following raw materials in parts by weight: 6 parts of citric acid, 3 parts of hydrochloric acid, 2 parts of stearic acid, 2 parts of fatty alcohol-polyoxyethylene ether and 1 part of naphthylacetic acid.
The preparation method of the activating agent comprises the following steps: adding citric acid and stearic acid into hydrochloric acid, heating to 60 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
The preparation method of the antibacterial and bactericidal material for the coating comprises the following steps:
(1) dissolving hydroxyethyl cellulose, dipotassium glycyrrhizinate, chitosan and poly (diallyl) dimethyl ammonium chloride in deionized water, heating to 70 ℃, and uniformly stirring;
(2) and adding the modified nano zinc oxide and the activating agent, uniformly stirring and drying to obtain the coating antibacterial and bactericidal material.
The stirring speed in the stirring step was 500 rpm.
Example 2
An antibacterial and bactericidal material for paint is prepared from the following raw materials in parts by weight: 80 parts of modified nano zinc oxide, 0.2 part of thickening agent, 0.5 part of dipotassium glycyrrhizinate, 6 parts of activating agent, 1 part of chitosan, 0.8 part of poly (diallyl-dimethyl-ammonium chloride) and 140 parts of deionized water.
The preparation method of the modified nano zinc oxide comprises the following steps: adding 6 parts of sodium silicate into 26 parts of water, heating to 70 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 25 ℃, adding 10 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 15min, adding 0.7 part of aluminum sulfate, uniformly stirring, adding 0.15 part of triisostearoyl isopropyl titanate and 0.25 part of isopropanol, heating to 75 ℃, filtering, washing for 3 times with ethanol, drying, and grinding to 50 meshes to obtain the modified nano zinc oxide.
The activating agent is prepared from the following raw materials in parts by weight: 6 parts of citric acid, 3 parts of hydrochloric acid, 2 parts of stearic acid, 2 parts of fatty alcohol-polyoxyethylene ether and 1 part of naphthylacetic acid.
The preparation method of the activating agent comprises the following steps: adding citric acid and stearic acid into hydrochloric acid, heating to 60 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
The preparation method of the antibacterial and bactericidal material for the coating comprises the following steps:
(1) dissolving hydroxyethyl cellulose, dipotassium glycyrrhizinate, chitosan and poly (diallyl) dimethyl ammonium chloride in deionized water, heating to 70 ℃, and uniformly stirring;
(2) and adding the modified nano zinc oxide and the activating agent, uniformly stirring and drying to obtain the coating antibacterial and bactericidal material.
The stirring speed in the stirring step was 500 rpm.
Example 3
An antibacterial and bactericidal material for paint is prepared from the following raw materials in parts by weight: 90 parts of modified nano zinc oxide, 0.6 part of thickening agent, 1.5 parts of dipotassium glycyrrhizinate, 8 parts of activating agent, 3 parts of chitosan, 1.5 parts of poly (diallyldimethylammonium chloride) and 160 parts of deionized water.
The preparation method of the modified nano zinc oxide comprises the following steps: adding 6 parts of sodium silicate into 26 parts of water, heating to 70 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 25 ℃, adding 10 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 15min, adding 0.7 part of aluminum sulfate, uniformly stirring, adding 0.15 part of triisostearoyl isopropyl titanate and 0.25 part of isopropanol, heating to 75 ℃, filtering, washing for 3 times with ethanol, drying, and grinding to 50 meshes to obtain the modified nano zinc oxide.
The activating agent is prepared from the following raw materials in parts by weight: 6 parts of citric acid, 3 parts of hydrochloric acid, 2 parts of stearic acid, 2 parts of fatty alcohol-polyoxyethylene ether and 1 part of naphthylacetic acid.
The preparation method of the activating agent comprises the following steps: adding citric acid and stearic acid into hydrochloric acid, heating to 60 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
The preparation method of the antibacterial and bactericidal material for the coating comprises the following steps:
(1) dissolving hydroxyethyl cellulose, dipotassium glycyrrhizinate, chitosan and poly (diallyl) dimethyl ammonium chloride in deionized water, heating to 70 ℃, and uniformly stirring;
(2) and adding the modified nano zinc oxide and the activating agent, uniformly stirring and drying to obtain the coating antibacterial and bactericidal material.
The stirring speed in the stirring step was 500 rpm.
To further demonstrate the effect of the present invention, the following test methods were provided:
example 4
Example 4 is different from example 1 in that the preparation parameters of the modified nano zinc oxide are different, and the other parameters are the same.
The preparation method of the modified nano zinc oxide comprises the following steps: adding 4 parts of sodium silicate into 24 parts of water, heating to 60 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 20 ℃, adding 8 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 10min, adding 0.5 part of aluminum sulfate, uniformly stirring, adding 0.1 part of triisostearoyl isopropyl titanate and 0.1 part of isopropanol, heating to 70 ℃, filtering, washing for 2 times with ethanol, drying, and grinding to 50 meshes to obtain the modified nano zinc oxide.
Example 5
Example 5 is different from example 1 in that the preparation parameters of the modified nano zinc oxide are different, and the other parameters are the same.
The preparation method of the modified nano zinc oxide comprises the following steps: adding 8 parts of sodium silicate into 28 parts of water, heating to 80 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 30 ℃, adding 12 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 20min, adding 0.8 part of aluminum sulfate, uniformly stirring, adding 0.2 part of triisostearoyl isopropyl titanate and 0.4 part of isopropanol, heating to 80 ℃, filtering, washing with ethanol for 4 times, drying, and grinding to 60 meshes to obtain the modified nano zinc oxide.
Comparative example 1
Comparative example 1 is different from example 1 in that comparative example 1 does not contain modified nano zinc oxide, and the other steps are the same.
Comparative example 2
Comparative example 2 is different from example 1 in that comparative example 2 replaces the modified nano zinc oxide with nano zinc oxide, and the rest is the same.
Comparative example 3
Comparative example 3 differs from example 1 in that comparative example 3 does not contain an activator, and is otherwise the same.
Comparative example 4
Comparative example 4 differs from example 1 in that the activator described in comparative example 4 consists of oxalic acid and silicic acid in a mass ratio of 3: 1.
To further demonstrate the effect of the present invention, the following test methods were provided:
1. the antibacterial and bactericidal materials described in examples 1-5 and comparative examples 1-4 are added into a coating to prepare a coating, the addition amount is 2%, the test is carried out according to GB/T21866-2008, the detection method described in GB/T21866-2008 is only used for detecting staphylococcus aureus and escherichia coli, and then the detection results of the pseudomonas subtilis and pseudomonas aeruginosa are shown in Table 1 according to the method described in GB/T21866-2008.
TABLE 1 results of antibacterial testing
As seen from Table 1, the antibacterial and sterilizing material of the present invention has excellent antibacterial effect in paint, wherein example 1 has the best antibacterial effect; comparing the example 1 with the examples 2-3, it can be known that different antibacterial sterilization material formulas can affect the antibacterial effect, wherein the example 1 is the best mixture ratio; comparing the example 1 with the examples 4-5, it can be known that different preparation parameters of the modified nano zinc oxide can affect the antibacterial effect, wherein the example 1 is the best preparation parameter; compared with the comparative examples 1-2, the modified nano zinc oxide can obviously improve the antibacterial performance of the antibacterial sterilizing material; compared with the comparative examples 3-4, the activator disclosed by the invention can obviously improve the antibacterial performance of the antibacterial sterilizing material; wherein the influence effect of the modified nano zinc oxide is greater than that of the activating agent.
2. And (3) detecting the anti-aging performance according to the method described in GB/T1765-1979, wherein the detection results are shown in Table 2.
TABLE 2 anti-aging test
As shown in Table 2, the antibacterial and sterilizing material of the present invention has excellent anti-aging effect in paint, wherein example 1 has the best anti-aging effect; as can be seen from comparison of the example 1 and the examples 2 to 3, different antibacterial sterilization material formulas can influence the anti-aging effect, wherein the example 1 is the optimal proportion; comparing the example 1 with the examples 4-5, it can be known that different preparation parameters of the modified nano zinc oxide can influence the anti-aging effect, wherein the example 1 is the best preparation parameter; compared with the comparative examples 1-2, the modified nano zinc oxide can obviously improve the anti-aging effect of the antibacterial sterilizing material; compared with the comparative examples 3-4, the activator disclosed by the invention can obviously improve the anti-aging effect of the antibacterial sterilizing material; wherein the influence effect of the modified nano zinc oxide is greater than that of the activating agent.
In light of the foregoing description of preferred embodiments according to the invention, it is clear that many changes and modifications can be made by the person skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The antibacterial and bactericidal material for the coating is characterized by being prepared from the following raw materials in parts by weight: 80-90 parts of modified nano zinc oxide, 0.2-0.6 part of thickening agent, 0.5-1.5 parts of dipotassium glycyrrhizinate, 6-8 parts of activating agent, 1-3 parts of chitosan, 0.8-1.5 parts of poly (diallyldimethylammonium chloride) and 140-160 parts of deionized water.
2. The antibacterial and bactericidal material for paint as claimed in claim 1, wherein the antibacterial and bactericidal material for paint is prepared from the following raw materials in parts by weight: 85 parts of modified nano zinc oxide, 0.4 part of hydroxyethyl cellulose, 1 part of dipotassium glycyrrhizinate, 7 parts of activating agent, 2 parts of chitosan, 1.2 parts of polydiallyl dimethyl ammonium chloride and 150 parts of deionized water.
3. The antibacterial and bactericidal material for paint as claimed in claim 1, wherein the thickener is one or more of hydroxyethyl cellulose, hydroxypropyl starch, xanthan gum, inorganic salts.
4. The antibacterial and bactericidal material for paint as claimed in claim 1,
the preparation method of the modified nano zinc oxide comprises the following steps: adding 4-8 parts of sodium silicate into 24-28 parts of water, heating to 60-80 ℃, uniformly stirring to prepare a sodium silicate aqueous solution, cooling to 20-30 ℃, adding 8-12 parts of nano zinc oxide into the sodium silicate aqueous solution, carrying out ultrasonic treatment for 10-20 min, adding 0.5-0.8 part of aluminum sulfate, uniformly stirring, adding 0.1-0.2 part of triisostearoyl isopropyl titanate and 0.1-0.4 part of isopropanol, heating to 70-80 ℃, filtering, washing with ethanol for 2-4 times, drying, and grinding to obtain the modified nano zinc oxide.
5. The antibacterial and bactericidal material for paint as claimed in claim 4, wherein the grinding step is carried out to a mesh size of 40-60.
6. The antibacterial and bactericidal material for paint as claimed in claim 1,
the activating agent is prepared from the following raw materials in parts by weight: 4-8 parts of citric acid, 2-4 parts of hydrochloric acid, 1-3 parts of stearic acid, 1.5-2.5 parts of fatty alcohol-polyoxyethylene ether and 0.5-1.5 parts of naphthylacetic acid.
7. The antibacterial and bactericidal material for paint as claimed in claim 6, wherein the preparation method of the activator is: adding citric acid and stearic acid into hydrochloric acid, heating to 50-70 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether and naphthylacetic acid, and uniformly stirring to obtain the activating agent.
8. The method for preparing the antibacterial and bactericidal material for paint as claimed in claim 1 to 7, characterized by comprising the following steps:
(1) dissolving a thickening agent, dipotassium glycyrrhizinate, chitosan and poly (diallyldimethylammonium chloride) in deionized water, heating to 60-80 ℃, and uniformly stirring;
(2) and adding the modified nano zinc oxide and the activating agent, uniformly stirring and drying to obtain the coating antibacterial and bactericidal material.
9. The method for preparing the antibacterial and bactericidal material for paint as claimed in claim 8, wherein the stirring speed in the stirring step is 450-550 rpm.
10. The use of the antibacterial and bactericidal material as claimed in any one of claims 1 to 7 in the preparation of coatings.
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| CN202010302417.9A CN111518429A (en) | 2020-04-17 | 2020-04-17 | Antibacterial and bactericidal material for paint and preparation method and application thereof |
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Application publication date: 20200811 |