阅读说明：本技术 一种用于涂料的抗菌杀菌材料及其制备方法和应用 (Antibacterial and bactericidal material for paint and preparation method and application thereof ) 是由 汪沛雨 贺一新 于 2020-04-17 设计创作，主要内容包括：本发明公开了一种用于涂料的抗菌杀菌材料,所述用于涂料的抗菌杀菌材料由以下原料制成：改性纳米氧化锌、增稠剂、甘草酸二钾、活化剂、壳聚糖、聚二烯丙基二甲基氯化铵、去离子水。本发明所述的用于涂料抗菌杀菌材料具有极好的抗菌灭菌性能,对大肠杆菌、金黄色葡萄球菌、枯草哑炮杆菌、沙门氏菌、绿脓菌等各种细菌、病毒都具有良好的杀灭能力,且抗老化性能优异；本发明所述的抗菌杀菌材料在涂料中只需要添加2%就能发挥良好的抗菌灭菌效果以及抗老化效果,能有效的节约成本,具有广泛的应用；本发明通过将纳米氧化锌改性和加入活化剂来显著提高用于涂料抗菌杀菌材料的抗菌灭菌性能和抗老化性能。(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.)

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.

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.