阅读说明：本技术 一种抗菌抗病毒涂料及其制备方法 (Antibacterial and antiviral coating and preparation method thereof ) 是由 简珍霞 于 2020-12-14 设计创作，主要内容包括：本发明属于涂料加工技术领域,具体涉及一种抗菌抗病毒涂料及其制备方法,包括如下对应重量份的物质：75～80份成膜树脂、10～15份乳液、6～9份成膜助剂、0.5～1.5份消泡剂、0.5～1份润湿剂、4～8份改性填料、2～4份抗菌添加剂、0.1～0.3份胺中和剂。本发明涂料抗菌抗病毒能力好,且制备方法简单,易于推广应用。(The invention belongs to the technical field of coating processing, and particularly relates to an antibacterial and antiviral coating and a preparation method thereof, wherein the antibacterial and antiviral coating comprises the following substances in parts by weight: 75-80 parts of film-forming resin, 10-15 parts of emulsion, 6-9 parts of film-forming additive, 0.5-1.5 parts of defoaming agent, 0.5-1 part of wetting agent, 4-8 parts of modified filler, 2-4 parts of antibacterial additive and 0.1-0.3 part of amine neutralizer. The coating has good antibacterial and antiviral capabilities, and the preparation method is simple and easy to popularize and apply.)

1. The antibacterial and antiviral paint is characterized by comprising the following substances in parts by weight:

75-80 parts of film-forming resin, 10-15 parts of emulsion, 6-9 parts of film-forming additive, 0.5-1.5 parts of defoaming agent, 0.5-1 part of wetting agent, 4-8 parts of modified filler, 2-4 parts of antibacterial additive and 0.1-0.3 part of amine neutralizer.

2. The antibacterial and antiviral paint as claimed in claim 1, wherein the film-forming resin is styrene-acrylic resin or water-based acrylic resin.

3. The antibacterial and antiviral paint as claimed in claim 1, wherein said emulsion is a paraffin emulsion.

4. The antibacterial and antiviral paint according to claim 1, wherein the coalescing agent is any one of n-butanol, propylene glycol and glycerol.

5. The antibacterial and antiviral paint according to claim 1, wherein the modified filler is prepared by the following steps:

1) putting kaolin into a calcining furnace for calcining treatment, and taking out after 1-1.5 hours;

2) carrying out grading grinding treatment on the kaolin treated in the step 1), and obtaining graded kaolin for later use after proportioning is finished;

3) immersing the graded kaolin obtained in the step 2) into a silane coupling agent, filtering out, and drying to constant weight.

6. The antibacterial and antiviral paint as claimed in claim 5, wherein the temperature in the calcining furnace is kept at 850-900 ℃ during the calcining treatment in step 1).

7. The antibacterial and antiviral paint as claimed in claim 5, wherein the graded kaolin in step 2) contains three particles with different specifications and sizes, which are large-particle kaolin, medium-particle kaolin and small-particle kaolin, and the corresponding weight ratio of the three is 4-6: 2-3: 1; the particle size of the large-particle kaolin is 80-100 mu m; the particle size of the medium-particle kaolin is 5-15 mu m; the particle size of the small-particle kaolin is 60-100 nm.

8. The antibacterial and antiviral paint as claimed in claim 5, wherein the silane coupling agent in step 3) is any one of kh550, kh560 and kh 570; and controlling the drying temperature to be 80-85 ℃ during drying.

9. The antibacterial and antiviral paint according to claim 1, wherein the preparation method of the antibacterial additive comprises the following steps:

(1) weighing the following raw materials in parts by weight: 10-15 parts of astragalus membranaceus, 6-9 parts of mangnolia officinalis, 3-6 parts of fructus toosendan, 1-3 parts of Chinese pulsatilla root, 2-5 parts of spreading hedyotis herb and 2-6 parts of moutan bark;

(2) mixing the astragalus root, the mangnolia officinalis, the szechwan chinaberry fruit, the Chinese pulsatilla root, the spreading hedyotis herb and the tree peony bark weighed in the step (1), putting the mixture into a marmite filled with loess, and taking out the mixture after stir-frying treatment for 20-25 min to obtain a mixed stir-fried material for later use; controlling the temperature in the casserole to be 100-110 ℃ during the frying treatment;

(3) and (3) blending the mixed stir-fried material obtained in the step (2) with clear water which is 3-4 times of the total mass of the mixed stir-fried material, heating, boiling and boiling for 1.5-2 h, filtering, and finally concentrating the filtrate to half of the original volume.

10. The preparation method of the antibacterial and antiviral paint is characterized by comprising the following steps:

firstly blending and stirring the film-forming resin and the emulsion, then sequentially adding the modified filler, the film-forming assistant, the defoaming agent, the wetting agent and the antibacterial additive, finally adding the amine neutralizer, and uniformly stirring by magnetic force.

Technical Field

The invention belongs to the technical field of coating processing, and particularly relates to an antibacterial and antiviral coating and a preparation method thereof.

Background

Common antibacterial coatings on the market at present generally adopt an organic antibacterial agent or an inorganic silver ion antibacterial agent, the organic antibacterial agent is sensitive to pH, large in addition amount and relatively large in toxicity and has irritation to people and livestock, and the added inorganic silver ion antibacterial agent is high in price, low in activity and harsh in environment requirement.

A large number of Chinese herbal medicines are known and have antimildew, antibacterial or antiviral effects. Therefore, the preparation of the Chinese herbal medicine mildew-proof antibacterial antiviral paint by combining the traditional Chinese herbal medicine with the paint is a very valuable research direction. However, the ingredients of traditional Chinese medicine are complex, and the properties of different effective ingredients are different. For example, some active ingredients of Chinese herbs are water-soluble, while some are not. Some traditional Chinese medicine components can exert the effect in the human body environment, but when the traditional Chinese medicine components are applied to the coating, the coating does not necessarily still exert the corresponding effect because the environment of the coating is completely different from that of the human body. In addition, when the traditional Chinese medicine components are applied to the coating, unpredictable problems such as solubility, dispersibility and the like may also occur. Therefore, it is impossible to predict its application in the paint field based on the current knowledge of Chinese herbs.

Most of the coatings with traditional Chinese medicine components which are rarely appeared in the market are gradually abandoned by consumers due to poor effects and unstable service performance, so that the redevelopment of a coating with good stability and stronger quality is particularly important.

Disclosure of Invention

The invention aims to solve the technical problems of poor quality and unstable performance of the existing coating.

The invention aims to provide an antibacterial and antiviral coating, and the aim of the invention is realized by the following technical scheme:

an antibacterial and antiviral coating comprises the following substances in parts by weight:

75-80 parts of film-forming resin, 10-15 parts of emulsion, 6-9 parts of film-forming additive, 0.5-1.5 parts of defoaming agent, 0.5-1 part of wetting agent, 4-8 parts of modified filler, 2-4 parts of antibacterial additive and 0.1-0.3 part of amine neutralizer.

Further, the film-forming resin is styrene-acrylic resin or water-based acrylic resin.

Further, the emulsion is paraffin emulsion.

Further, the film-forming assistant is any one of n-butyl alcohol, propylene glycol and glycerol.

Further, the preparation method of the modified filler comprises the following steps:

1) putting kaolin into a calcining furnace for calcining treatment, and taking out after 1-1.5 hours;

2) carrying out grading grinding treatment on the kaolin treated in the step 1), and obtaining graded kaolin for later use after proportioning is finished;

3) immersing the graded kaolin obtained in the step 2) into a silane coupling agent, filtering out, and drying to constant weight.

Further, the temperature in the calcining furnace is kept to be 850-900 ℃ during the calcining treatment in the step 1).

Further, the graded kaolin in the step 2) contains three particles with different specifications and sizes, namely large-particle kaolin, medium-particle kaolin and small-particle kaolin, and the corresponding weight ratio of the three particles is 4-6: 2-3: 1; the particle size of the large-particle kaolin is 80-100 mu m; the particle size of the medium-particle kaolin is 5-15 mu m; the particle size of the small-particle kaolin is 60-100 nm.

Further, the silane coupling agent in the step 3) is any one of kh550, kh560 and kh 570; and controlling the drying temperature to be 80-85 ℃ during drying.

Further, the preparation method of the antibacterial additive comprises the following steps:

(1) weighing the following raw materials in parts by weight: 10-15 parts of astragalus membranaceus, 6-9 parts of mangnolia officinalis, 3-6 parts of fructus toosendan, 1-3 parts of Chinese pulsatilla root, 2-5 parts of spreading hedyotis herb and 2-6 parts of moutan bark;

(2) mixing the astragalus root, the mangnolia officinalis, the szechwan chinaberry fruit, the Chinese pulsatilla root, the spreading hedyotis herb and the tree peony bark weighed in the step (1), putting the mixture into a marmite filled with loess, and taking out the mixture after stir-frying treatment for 20-25 min to obtain a mixed stir-fried material for later use; controlling the temperature in the casserole to be 100-110 ℃ during the frying treatment;

(3) and (3) blending the mixed stir-fried material obtained in the step (2) with clear water which is 3-4 times of the total mass of the mixed stir-fried material, heating, boiling and boiling for 1.5-2 h, filtering, and finally concentrating the filtrate to half of the original volume.

A preparation method of an antibacterial and antiviral coating comprises the following steps:

firstly blending and stirring the film-forming resin and the emulsion, then sequentially adding the modified filler, the film-forming assistant, the defoaming agent, the wetting agent and the antibacterial additive, finally adding the amine neutralizer, and uniformly stirring by magnetic force.

The invention has the following beneficial effects:

the invention discloses an antibacterial antiviral coating and a preparation method thereof, wherein the formula composition of the coating is subjected to special optimization and improvement treatment, wherein a film-forming resin and an emulsion are used as main raw materials, a film-forming assistant, a defoaming agent and a wetting agent are used as auxiliary materials to improve the using effect of coating, two components of a modified filler and an antibacterial additive are added for further improving the using quality, the modified filler is obtained by processing kaolin, the specific surface area and the adsorption capacity of the calcined kaolin are improved, and the grading treatment of three particle sizes is performed, so that the dispersion uniformity of the kaolin is facilitated on one hand, and the adsorption and fixation stability of the kaolin is facilitated on the other hand; the antibacterial additive is prepared by compounding and extracting a plurality of Chinese herbal medicines, the prepared antibacterial additive has strong antibacterial and antiviral capabilities by using the guide compatibility of monarch, minister, assistant and guide, and the active ingredients can be fixed in the modified filler, so that the stability is improved, the slow and lasting release can be realized, and the use value of the coating is enhanced. In addition, the method is simple and easy to popularize and apply, and the prepared coating has good antibacterial and antiviral capabilities, and has great market competitiveness and popularization and application values.

Detailed Description

The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.

Unless otherwise indicated, reagents and materials used in the following examples are commercially available.

Example 1

An antibacterial and antiviral coating comprises the following substances in parts by weight:

75 parts of film-forming resin, 10 parts of emulsion, 6 parts of film-forming additive, 0.5 part of defoaming agent, 0.5 part of wetting agent, 4 parts of modified filler, 2 parts of antibacterial additive and 0.1 part of amine neutralizer.

The film-forming resin is styrene-acrylic resin; the emulsion is paraffin emulsion; the film-forming additive is n-butyl alcohol.

The preparation method of the modified filler comprises the following steps:

1) putting kaolin into a calcining furnace for calcining treatment, and taking out after 1 h;

2) carrying out grading grinding treatment on the kaolin treated in the step 1), and obtaining graded kaolin for later use after proportioning is finished;

3) immersing the graded kaolin obtained in the step 2) into a silane coupling agent, filtering out, and drying to constant weight.

The temperature in the calciner is maintained at 850 ℃ during the calcination treatment in step 1).

The graded kaolin in the step 2) contains three particles with different specifications and sizes, namely large-particle kaolin, medium-particle kaolin and small-particle kaolin, and the corresponding weight ratio of the three particles is 4: 2: 1; the particle size of the large-particle kaolin is 80-100 mu m; the particle size of the medium-particle kaolin is 5-15 mu m; the particle size of the small-particle kaolin is 60-100 nm.

The type of the silane coupling agent in the step 3) is kh 550; the temperature for drying was controlled to 80 ℃.

The preparation method of the antibacterial additive comprises the following steps:

(1) weighing the following raw materials in parts by weight: 10 parts of astragalus, 6 parts of mangnolia officinalis, 3 parts of szechwan chinaberry fruit, 1 part of Chinese pulsatilla root, 2 parts of spreading hedyotis herb and 2 parts of moutan bark;

(2) mixing the astragalus root, the mangnolia officinalis, the szechwan chinaberry fruit, the Chinese pulsatilla root, the spreading hedyotis herb and the tree peony bark weighed in the step (1), putting the mixture into a marmite filled with loess, and taking out the mixture after stir-frying treatment for 20min to obtain a mixed stir-fried material for later use; controlling the temperature in the casserole to be 100 ℃ during the frying treatment;

(3) and (3) blending the mixed stir-fried material obtained in the step (2) with clear water which is 3 times of the total mass of the mixed stir-fried material, heating, boiling and boiling for 1.5h, filtering, and finally concentrating the filtrate to half of the original volume.

Example 2

An antibacterial and antiviral coating comprises the following substances in parts by weight:

78 parts of film-forming resin, 13 parts of emulsion, 8 parts of film-forming additive, 1 part of defoaming agent, 0.8 part of wetting agent, 6 parts of modified filler, 3 parts of antibacterial additive and 0.2 part of amine neutralizer.

The film-forming resin is styrene-acrylic resin; the emulsion is paraffin emulsion; the film-forming assistant is n-butyl alcohol and propylene glycol.

The preparation method of the modified filler comprises the following steps:

1) putting kaolin into a calcining furnace for calcining treatment, and taking out after 1.3 h;

2) carrying out grading grinding treatment on the kaolin treated in the step 1), and obtaining graded kaolin for later use after proportioning is finished;

3) immersing the graded kaolin obtained in the step 2) into a silane coupling agent, filtering out, and drying to constant weight.

The temperature in the calciner is maintained at 880 ℃ during the calcination treatment in step 1).

The graded kaolin in the step 2) contains three particles with different specifications and sizes, namely large-particle kaolin, medium-particle kaolin and small-particle kaolin, and the corresponding weight ratio of the three is 5: 2.6: 1; the particle size of the large-particle kaolin is 80-100 mu m; the particle size of the medium-particle kaolin is 5-15 mu m; the particle size of the small-particle kaolin is 60-100 nm.

The type of the silane coupling agent in the step 3) is kh 560; the temperature for controlling the drying was 83 ℃.

The preparation method of the antibacterial additive comprises the following steps:

(1) weighing the following raw materials in parts by weight: 13 parts of astragalus, 8 parts of mangnolia officinalis, 5 parts of szechwan chinaberry fruit, 2 parts of Chinese pulsatilla root, 4 parts of spreading hedyotis herb and 5 parts of moutan bark;

(2) mixing the radix astragali, cortex magnoliae officinalis, fructus toosendan, Chinese pulsatilla root, spreading hedyotis herb and tree peony bark weighed in the step (1), putting into a marmite containing yellow core soil, frying for 23min, and taking out to obtain a mixed fried material for later use; controlling the temperature in the casserole to be 105 ℃ during the frying treatment;

(3) and (3) blending the mixed stir-fried material obtained in the step (2) with clear water with the total mass being 3.5 times of that of the stir-fried material, heating, boiling and boiling for 1.8 hours, filtering, and finally concentrating the filtrate to half of the original volume.

Example 3

An antibacterial and antiviral coating comprises the following substances in parts by weight:

80 parts of film-forming resin, 15 parts of emulsion, 9 parts of film-forming additive, 1.5 parts of defoaming agent, 1 part of wetting agent, 8 parts of modified filler, 4 parts of antibacterial additive and 0.3 part of amine neutralizer.

The film-forming resin is water-based acrylic resin; the emulsion is paraffin emulsion; the film forming auxiliary agent is n-butyl alcohol, propylene glycol and glycerol.

The preparation method of the modified filler comprises the following steps:

1) putting kaolin into a calcining furnace for calcining treatment, and taking out after 1.5 hours;

2) carrying out grading grinding treatment on the kaolin treated in the step 1), and obtaining graded kaolin for later use after proportioning is finished;

3) immersing the graded kaolin obtained in the step 2) into a silane coupling agent, filtering out, and drying to constant weight.

The temperature in the calcining furnace was maintained at 900 ℃ during the calcining treatment in step 1).

The graded kaolin in the step 2) contains three particles with different specifications and sizes, namely large-particle kaolin, medium-particle kaolin and small-particle kaolin, and the corresponding weight ratio of the three particles is 6: 3: 1; the particle size of the large-particle kaolin is 80-100 mu m; the particle size of the medium-particle kaolin is 5-15 mu m; the particle size of the small-particle kaolin is 60-100 nm.

The type of the silane coupling agent in the step 3) is kh 570; the temperature for drying was controlled to 85 ℃.

The preparation method of the antibacterial additive comprises the following steps:

(1) weighing the following raw materials in parts by weight: 15 parts of astragalus, 9 parts of mangnolia officinalis, 6 parts of szechwan chinaberry fruit, 3 parts of Chinese pulsatilla root, 5 parts of spreading hedyotis herb and 6 parts of moutan bark;

(2) mixing the radix astragali, cortex magnoliae officinalis, fructus toosendan, Chinese pulsatilla root, spreading hedyotis herb and tree peony bark weighed in the step (1), putting into a marmite containing loess, frying for 25min, and taking out to obtain a mixed fried material for later use; controlling the temperature in the casserole to be 110 ℃ during the frying treatment period;

(3) and (3) blending the mixed stir-fried material obtained in the step (2) with clear water of which the total mass is 4 times of that of the stir-fried material, heating, boiling and boiling for 2 hours, filtering, and finally concentrating the filtrate to half of the original volume.

Example 4

A preparation method of an antibacterial and antiviral coating comprises the following steps:

firstly blending and stirring the film-forming resin and the emulsion, then sequentially adding the modified filler, the film-forming assistant, the defoaming agent, the wetting agent and the antibacterial additive, finally adding the amine neutralizer, and uniformly stirring by magnetic force.

Comparative example 1

This comparative example 1 is compared to example 2 only with the exception that the medium particle kaolin component of the modified filler is omitted, except that the process steps are otherwise the same.

Comparative example 2

This comparative example 2 is different from example 2 only in that the modified filler component is replaced with an equal part by mass of ordinary kaolin, except that the process steps are the same.

Comparative example 3

This comparative example 3 is different from example 2 only in that the addition of a modified filler component is omitted, and the steps of the method are the same except for this.

In order to compare the effects of the invention, the performance tests of the coatings corresponding to the above examples 2 and 1-3 are carried out, and the preparation methods of the adsorbents corresponding to the examples 2 and 1-3 all adopt the technical scheme of the example 4; specific comparative data are shown in table 1 below:

TABLE 1

Note: the new antibacterial and antiviral properties described in table 1 above were tested on the as-prepared coatings; the antibacterial and antiviral properties after aging are to test the performance of the paint aged for 3 months under natural conditions; the antibacterial rate is the antibacterial rate to staphylococcus aureus (ATCC 6538P); the killing rate is the killing rate to H1N1 virus.

As can be seen from the above Table 1, the coating of the present invention has strong antibacterial and antiviral properties, and the use stability is better, so the coating has great market competitiveness.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.