阅读说明：本技术 一种丙烯酸树脂包埋处理辣椒素防污剂及其制备方法与应用 (Capsaicin anti-fouling agent embedded and treated by acrylic resin and preparation method and application thereof ) 是由 张占平 高强 齐育红 于 2019-11-19 设计创作，主要内容包括：本发明提供一种丙烯酸树脂包埋处理辣椒素防污剂及其制备方法与应用,所述包埋辣椒素防污剂包括辣椒素、多孔粉体和丙烯酸自抛光树脂；所述辣椒素负载于多孔粉体上形成负载体；所述丙烯酸自抛光树脂包覆所述负载体；防污剂的组成质量比为辣椒素：多孔粉体：丙烯酸自抛光树脂＝1:2～4:0.05～0.15。本发明一方面可以实现对辣椒素的表面保护,防止其在防污涂料的生产制造过程中和防污涂料的涂装应用过程中持续释放弥散在空气中,造成生产和涂装工人的皮肤刺激和过敏等健康危害,防止辣椒素在空气中持续释放、降低防污功效。(The invention provides a capsaicin anti-fouling agent for acrylic resin embedding treatment and a preparation method and application thereof, wherein the capsaicin embedded anti-fouling agent comprises capsaicin, porous powder and acrylic self-polishing resin; the capsaicin is loaded on the porous powder to form a loading body; the acrylic acid self-polishing resin coats the load body; the antifouling agent comprises the following components in percentage by mass: porous powder: the acrylic self-polishing resin is 1: 2-4: 0.05-0.15. On one hand, the invention can realize surface protection of capsaicin, prevent the capsaicin from continuously releasing and dispersing in the air in the production and manufacturing process of the antifouling paint and the coating application process of the antifouling paint to cause skin irritation, allergy and other health hazards of production and coating workers, prevent the capsaicin from continuously releasing in the air and reduce the antifouling efficacy.)

1. The capsaicin antifouling agent is characterized by comprising capsaicin, porous powder and acrylic acid self-polishing resin; the capsaicin is loaded on the porous powder to form a loading body; the acrylic acid self-polishing resin coats the load body; the antifouling agent comprises the following components in percentage by mass: porous powder: the acrylic self-polishing resin is 1: 2-4: 0.05-0.15.

2. The capsaicin antifoulant according to claim 1, wherein the porous powder is at least one of diatomaceous earth, carbon nanotubes, porous titanium dioxide, porous zinc oxide, and porous silica; the aperture of the porous powder is 0.3 nanometer to 2 micrometers.

3. The capsaicin antifoulant of claim 1, wherein the acrylic self-polishing resin is at least one of zinc acrylate, copper acrylate, and silicone acrylate.

4. A capsaicin antifoulant according to claim 1, wherein the capsaicin is a synthetic capsaicin, a natural capsaicin.

5. A method for preparing a capsaicin anti-fouling agent according to claim 1, comprising the steps of:

(1) dissolving 10-30 g of capsaicin in 250mL of deionized water, and stirring at 80-90 ℃ for 0.25-1 h to obtain a capsaicin suspension; the mass concentration of the capsaicin suspension is 4-12%;

(2) adding porous powder into the capsaicin suspension to disperse the porous powder into the capsaicin suspension, stirring at 80-90 ℃ for 0.1-0.25 h, cooling to room temperature-40 ℃, and then stirring for 0.5-1 h to separate out capsaicin crystals; obtaining a porous powder loaded capsaicin solution;

(3) and (3) adding an acrylic acid self-polishing resin solution into the porous powder loaded capsaicin solution obtained in the step (2), stirring for 1-2 hours at room temperature-40 ℃, filtering, and drying to obtain the capsaicin anti-fouling agent.

6. The production method according to claim 5, wherein the acrylic self-polishing resin solution is 70 parts by mass of an acrylic self-polishing resin dissolved in 30 parts by mass of xylene.

7. The preparation method according to claim 5, wherein the stirring speed in the step (1) is 200-300 r/min; the stirring speed in the step (2) is 300-450 r/min, and the stirring speed in the step (3) is 200-300 r/min.

8. A capsaicin antifouling paint, which is characterized by comprising the capsaicin antifouling agent.

9. An antifouling coating, wherein said coating is prepared by applying the antifouling paint according to claim 8.

Technical Field

The invention belongs to the technical field of marine antifouling paint and underwater paint. In particular to a capsaicin anti-fouling agent embedded and processed by acrylic resin and a preparation method and application thereof.

Background

The pollution problem of marine organisms always limits the development and utilization of marine resources by people, the navigation resistance of ships is increased due to the attachment of various marine organisms, the fuel consumption is increased, the metabolic products of the marine organisms corrode the ships, the maintenance cost of the ships is increased, the sailing rate of the ships is reduced, the marine organisms block various pipelines, valves and meshes of culture cages at the bottom of the sea, and the economic loss is difficult to estimate. In order to prevent and remove marine organisms, the application of antifouling paint is the only economically and efficiently important way to solve the fouling problem and widely apply.

With the enhancement of environmental awareness, the search for an environmentally-friendly natural product antifouling agent has become a research hotspot in the field of antifouling coatings, and the successful application of capsaicin as a repellent for insects and animals has prompted us to use it as a possible antifouling agent. Its non-toxic and non-biocidal characteristics make it a viable alternative to organotin compounds. At present, many reports on capsaicin synthetic antifouling agents are reported, and the development of chemically synthetic capsaicin antifouling agents further enhances the antifouling performance of the capsaicin synthetic antifouling agents. The development of the efficient, low-toxicity and even non-toxic environment-friendly natural product antifouling agent can meet the antifouling requirement on the basis of protecting the ecological environment, and is an important direction for future development.

In recent years, resins such as copper acrylate, zinc acrylate and silicon acrylate which can perform ion exchange reaction with seawater are widely applied as base materials of tin-free self-polishing antifouling coatings, and the release rates of cuprous oxide and various antifouling agents in coatings can be effectively regulated and controlled. However, the continuous release of cuprous oxide and other substances into seawater can lead to the enrichment of heavy metal ions in seaports and marine organisms, which causes problems of environmental pollution and harm to human health and safety. Therefore, in recent years, the development of bionic antifouling paint is increasing, and the capsaicin antifouling paint attracts more attention. Likewise, efficient utilization and controlled release of capsaicin is critical.

Disclosure of Invention

Based on the above background art, in order to reduce the waste of capsaicin and effectively control the stable release of capsaicin from the antifouling coating into the seawater. The invention aims to provide a preparation method of capsaicine embedded by acrylic acid self-polishing resin, which can prevent the capsaicine from being continuously released in the air so as to reduce the antifouling effect on one hand, and can improve the compatibility, dispersion uniformity and anti-settling property of the capsaicine in an oily coating when being used in an antifouling marine coating on the other hand, thereby realizing the regulation and control of the slow release rate of the capsaicine in the antifouling coating in the seawater, reducing the waste of the capsaicine and fully exerting the antifouling efficiency of the capsaicine.

The purpose of the invention is realized by the following technical scheme:

the invention provides an embedded capsaicin anti-fouling agent, which comprises capsaicin, capsaicin-loaded porous powder and acrylic acid self-polishing resin, wherein the capsaicin and the porous powder form a load body, and the acrylic acid self-polishing resin coats the load body.

Based on the technical scheme, the acrylic acid self-polishing resin is preferably one or more of zinc acrylate, copper acrylate and acrylic acid silicone resin which can be corroded by ion exchange reaction or hydrolysis and self-polishing in seawater.

Based on the technical scheme, the preferable porous powder is one or more than two of diatomite, carbon nano tube, porous titanium dioxide, porous zinc oxide, porous silicon dioxide and the like which are mixed for use; the aperture of the porous powder is 0.3 nanometer to 2 micrometers.

Based on the technical scheme, the optimized capsaicin is synthetic capsaicin, natural capsaicin and the like.

The invention also provides a preparation method of the antifouling agent, which comprises the following steps:

(1) dissolving 10-30 g of capsaicin in 250mL of deionized water, and stirring at 80-90 ℃ for 0.25-1 h to obtain a capsaicin suspension; the mass concentration of the capsaicin suspension is 4-12%;

(2) adding porous powder into the capsaicin suspension to disperse the porous powder into the capsaicin suspension, stirring at 80-90 ℃ for 0.1-0.25 h, cooling to room temperature-40 ℃, and then stirring for 0.5-1 h to separate out capsaicin crystals to obtain a porous powder loaded capsaicin solution;

(3) and (3) adding an acrylic acid self-polishing resin solution into the porous powder loaded capsaicin solution obtained in the step (2), stirring for 1-2 hours at room temperature-40 ℃, filtering, and drying to obtain the capsaicin anti-fouling agent.

Based on the above technical solution, it is preferable that the acrylic self-polishing resin solution has a concentration of 70 parts by mass in 30 parts by mass of xylene.

Based on the technical scheme, preferably, the stirring speed in the step (1) is 200-300 r/min; the stirring speed in the step (2) is 300-450 r/min, and the stirring speed in the step (3) is 200-300 r/min.

The specific steps can be expressed as: adding 1 part by mass of synthetic capsaicin into a four-neck flask, adding 100-500 mL of sterilized deionized water until the liquid level does not cover a stirring paddle, heating and stirring the four-neck flask on a constant-temperature water bath kettle, setting the initial temperature of the constant-temperature water bath kettle to be 80-90 ℃, setting the rotating speed of a stirring rod to be 200-300 r/min, dissolving the synthetic capsaicin in the sterilized deionized water after half an hour, then reducing the rotating speed of the stirring paddle, weighing 2-4 parts by mass of diatomite, slowly adding the diatomite into the four-neck flask, increasing the rotating speed to 400-450 r/min, uniformly dispersing the diatomite in a capsaicin suspension, removing the water bath kettle after 10-15 minutes, reducing the rotating speed to 200-300 r/min, simultaneously introducing cooling water to the surface of the four-neck flask until the liquid in the four-neck flask is cooled to room temperature, and precipitating capsaicin crystals and depositing in micropores and on the surface of the diatomite, and after 30-60 minutes, reducing the rotating speed, dropwise adding an acrylic acid self-polishing resin solution with the mass being 5-30% of the sum of the capsaicin and the diatomite into the four-mouth flask, increasing the rotating speed to 400-450 r/min again, continuously stirring to enable the acrylic acid self-polishing resin to be separated out and wrap on the diatomite on which the capsaicin is deposited, pouring out the mixed liquid in the four-mouth flask after 1-2 hours, filtering and drying, and collecting the dried powder for preparing the capsaicin antifouling paint.

In another aspect of the present invention, there is provided a capsaicin paint including the above-described embedded-treatment capsaicin anti-fouling agent.

The invention also provides a coating which is characterized by being prepared by coating the coating.

Advantageous effects

(1) According to the invention, by utilizing the ion exchange hydrolysis characteristic of acrylic acid self-polishing resin in seawater and good compatibility with organic solvent and resin, and adopting the acrylic acid self-polishing resin to carry out embedding treatment on capsaicin, on one hand, the surface protection of capsaicin can be realized, the capsaicin is prevented from being continuously released and dispersed in the air in the production and manufacturing process of the antifouling paint and the coating application process of the antifouling paint, so that the health hazards of skin irritation, allergy and the like of production and coating workers are prevented, the capsaicin is prevented from being continuously released in the air, and the antifouling effect is reduced.

(2) The invention can realize the controllable slow release of the capsaicin in the seawater, the release rate of the capsaicin after the embedding treatment is reduced by about 50 percent, the waste of the capsaicin is reduced, and the antifouling efficiency of the capsaicin is fully exerted.

(3) When the capsaicin sustained-release antifouling paint is used in a marine antifouling paint, the compatibility of the capsaicin in an oily paint and a film-forming substance, the dispersibility in the paint and the mechanical property and the anti-settling property of the antifouling paint can be improved, the sustained-release rate of the capsaicin in the antifouling paint in seawater can be regulated and controlled, the capsaicin waste is reduced, and the antifouling efficiency of the capsaicin is fully exerted.

Drawings

FIG. 1 is a graph showing the release rate of capsaicin from a self-polishing antifouling coating containing the antifouling agent prepared in examples 1 to 3 and comparative examples 1 to 3.

Detailed Description