AU2021105323A4

AU2021105323A4 - Capsaicin environmentally-friendly antifouling coating and preparation method thereof

Info

Publication number: AU2021105323A4
Application number: AU2021105323A
Authority: AU
Inventors: Yanhua Yang
Original assignee: Yunnan Yuesheng Agricultural Technology Co Ltd
Current assignee: Yunnan Yuesheng Agricultural Technology Co Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-05-19
Anticipated expiration: 2029-08-11

Abstract

OF THE DISCLOSURE Disclosed is a capsaicin environmentally-friendly antifouling coating, which includes a film-forming material, a high-concentration capsicum oleoresin, a pigment filler, an auxiliary agent and a solvent. The present disclosure also discloses a capsaicin environmentally-friendly antifouling coating and a preparing method thereof. The film-forming material is adopted as a base material; the high-concentration capsicum oleoresin, the pigment filler and the auxiliary agent which are dissolved with the solvent are added into the base material; and the mixture is stirred, ground and fully mixed to obtain the coating. The capsaicin environmentally-friendly antifouling coating provided by the present disclosure is used for the surface protection of ships and underwater facilities to prevent the attachment, growth and reproduction of marine organisms. The main component of the anti-fouling agent used in the coating is natural capsaicin, whose main mode of action to marine organisms is repellent, and it is degradable, does not destroy the marine ecological environment, and is broad-spectrum, efficient, green and environmentally-friendly.

Description

CAPSAICIN ENVIRONMENTALLY-FRIENDLYANTIFOULING COATING AND PREPARATION METHOD THEREOF TECHNICAL FIELD

[01] The present disclosure relates to the technical field of coatings, in particular to a capsaicin environmentally-friendly antifouling coating and a preparation method thereof.

BACKGROUNDART

[02] The 21st century is the century for mankind to develop and utilize of the ocean. Marine engineering in naval vessels, shipbuilding, shipping, fisheries, subsea oil and gas exploitation, and mariculture have all achieved unprecedented development. A comprehensive and frontier issue faced by the above marine engineering is that whether it is in fixed deep-sea facilities, such as ports, buoys, wharfs, piers, pipelines, fishing gears, or the dynamically navigating naval vessels and ships, there will be various marine fouling organisms adhering to and multiplying on the surface. Their large numbers and rapid growth will seriously endanger shipping costs and maritime safety. Therefore, effectively preventing marine biological fouling has always been the focus and hot spot of global research.

[03] Marine antifouling methods are complex and diverse, and there are many types of technologies. However, from the perspective of the development history of marine antifouling, adding antifouling agents to make antifouling coatings is one of the economically and technically feasible and most effective methods. At present, the commonly used antifouling agents in the world are cuprous oxide, copper pyrithione (zinc), zineb, Sea-nine211, trichlorophenyl maleimide, etc., although their toxicity is less than that of TBT and DDT, but they are still toxic substances, which can poison marine life and destroy the marine ecological balance, and have not solved the environmentally-friendly problem. With the increasing attention of the international community to environmental issues, it is imperative to develop efficient, broad-spectrum and environmentally friendly marine antifouling coatings.

SUMMARY

[04] The purpose of the present disclosure is to provide an environmentally-friendly, efficient, broad-spectrum and long-lasting capsaicin environmentally-friendly antifouling coating and a preparation method thereof, so as to solve the problems raised in the background art.

[05] In order to achieve the above objectives, the present disclosure provides the following technical schemes:

[06] A capsaicin environmentally-friendly antifouling coating, which consists of the following components in weight percentage: 30-50% of a film-forming material, 0.1-10% of a high-concentration capsicum oleoresin, 10-40% of a pigment filler, 5-20% of an auxiliary agent and 10-30% of a solvent.

[07] As a further scheme of the present disclosure, the film-forming material is one or more of chlorinated rubber, vinyl chloride-vinyl acetate copolymer, epoxy resin, and acrylic resin.

[08] As a further scheme of the present disclosure, the high-concentration capsicum oleoresin has a total capsaicin content of 40-80%, wherein the capsaicin monomer accounts for 60%-70% of the total capsaicin.

[09] As a further scheme of the present disclosure, the pigment filler is one or more of iron oxide red, titanium dioxide, aluminum oxide, barium sulfate, zinc oxide, mica powder, calcium carbonate, talcum powder, kaolin, white carbon, and rosin.

[10] As a further scheme of the present disclosure, the auxiliary agent includes a dispersant, a defoaming agent, a leveling agent, an anti-settling agent, a thickener, and a wetting agent.

[11] As a further scheme of the present disclosure, the solvent is one or a mixture of two or more of toluene, xylene, butyl acetate, ethyl acetate, isobutyl acetate, butanol or cyclohexanone.

[12] The preparation method of the capsaicin environmentally-friendly antifouling coating has the following specific steps:

[13] (1) Preparation of raw materials, preparing each component according to weight percentage;

[14] (2) Firstly, dissolving the high-concentration capsicum oleoresin in step (1) with a solvent completely, mixing with other liquid components uniformly, then adding the solid components to the uniformly mixed liquid components, subjecting the mixture to stirring and grinding, and then mixing evenly to obtain the coating.

[15] Compared with the prior art, the beneficial effects of the present disclosure are as follows:

[16] 1. The present disclosure uses high-concentration capsicum oleoresin as an antifouling agent. The main component of the antifouling agent is capsaicin, which is an active substance extracted from natural pepper. It is environmentally friendly, has no pollution to the ocean, and its main mode of action to marine organisms is repellent, which will not kill marine organisms and destroy the marine ecological balance.

[17] 2. The capsaicin antifouling agent used in the present disclosure has a high concentration, the total capsaicin content reaches 40-80%, and the capsaicin monomer content in the total capsaicin reaches 60-70%. In the process of using, the addition amount of capsaicin antifouling agent is small, which will not affect the performance of the coating itself, and the cost is low.

[18] 3. In the preparation process of the antifouling coating of the present disclosure, the high-concentration capsicum oleoresin is completely dissolved with an organic solvent, then mixed uniformly with other liquid components, finally the solid components are added, and the fouling agent and other components are fully mixed evenly by mixing and grinding with a ball mill, ensuring that the characteristics of the antifouling coating can be fully utilized.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[19] The technical schemes of the present disclosure will be described in further detail below in conjunction with specific embodiments.

[20] Example 1

[21] A preparation method of capsaicin environmentally-friendly antifouling coating includes the following steps:

[22] (1) Materials were prepared according to the following weight percentages: 35% of film-forming material, 5% of high-concentration capsicum oleoresin, 25% of pigment fillers, 10% of auxiliary agents, and 25% of solvents.

[23] Wherein, the film-forming material was chlorinated rubber; the total capsaicin content of the high-concentration capsicum oleoresin was 20%, and the content of capsaicin monomer was 60%; the pigment fillers were iron oxide red, titanium dioxide, and talc powder; the auxiliary agents were a dispersant, an anti-settling agent and a wetting agent; and the solvent was toluene.

[24] (2) Preparation: firstly, the high-concentration capsicum oleoresin of step (1) was fully dissolved in the solvent and then mixed with other liquid components uniformly, then the solid components were added to the uniformly mixed liquid components, and the resulting mixture was mixed evenly after stirring and grinding to obtain the coating.

[25] The antifouling performance of the capsaicin environmentally-friendly antifouling coating of this embodiment according to the above technical scheme was tested, and it was good within 12 months, the coating did not crack or fall off, and the surface was smooth and free of marine organisms.

[26] Example 2

[27] A preparation method of capsaicin environmentally-friendly antifouling coating includes the following steps:

[28] (1) Materials were prepared according to the following weight percentages: 45% of film-forming material, 1% of high-concentration capsicum oleoresin, 20% of pigment fillers, 14% of auxiliary agents, and 20% of solvents.

[29] Wherein, the film-forming material was epoxy resin; the total capsaicin content of the high-concentration capsicum oleoresin was 50%, and the content of capsaicin monomer was 65%; the pigment fillers were aluminum oxide, titanium dioxide, and calcium carbonate; the auxiliary agents were a leveling agent, an anti-settling agent and a wetting agent; and the solvent was xylene.

[30] (2) Preparation: firstly, the high-concentration capsicum oleoresin of step (1) was fully dissolved in the solvent and then mixed with other liquid components uniformly, then the solid components were added to the uniformly mixed liquid components, and the resulting mixture was mixed evenly after stirring and grinding to obtain the coating.

[31] The antifouling performance of the capsaicin environmentally-friendly antifouling coating of this embodiment according to the above technical scheme was tested, and it was good within 12 months, the coating did not crack or fall off, and the surface was smooth and free of marine organisms.

[32] Example 3

[33] A preparation method of capsaicin environmentally-friendly antifouling coating includes the following steps:

[34] (1) Materials were prepared according to the following weight percentages: 50% of film-forming material, 5% of high-concentration capsicum oleoresin, 20% of pigment fillers, 10% of auxiliary agents, and 15% of solvents.

[35] Wherein, the film-forming material was acrylic resin; the total capsaicin content of the high-concentration capsicum oleoresin was 60%, and the content of capsaicin monomer was 62%; the pigment fillers were aluminum oxide, titanium dioxide, talcum powder and calcium carbonate; the auxiliary agents were a leveling agent, an defoaming agent and a wetting agent; and the solvent was butyl acetate.

[36] (2) Preparation: firstly, the high-concentration capsicum oleoresin of step (1) was fully dissolved in the solvent and then mixed with other liquid components uniformly, then the solid components were added to the uniformly mixed liquid components, and the resulting mixture was mixed evenly after stirring and grinding to obtain the coating.

[37] The antifouling performance of the capsaicin environmentally-friendly antifouling coating of this embodiment according to the above technical scheme was tested, and it was good within 12 months, the coating did not crack or fall off, and the surface was smooth and free of marine organisms.

[38] High-concentration capsicum oleoresin uses high-quality pepper as a raw material, and is extracted, separated, purified and refined by scientific methods. It is a pure natural ointment-like substance with a strong and spicy taste. The main component is capsaicin. Capsaicin is an extremely pungent vanilla amide alkaloid with a broad-spectrum antibacterial effect, which has a repellent effect on marine fouling organisms, has an inhibition effect on the reproduction of marine fouling organisms, has no damage to marine attached organisms, and has obvious ecological benefits.

[39] The present disclosure uses high-concentration capsicum oleoresin as an antifouling agent. The main component in the antifouling agent is capsaicin, which is an active substance extracted from natural pepper. It is environmentally friendly and has no pollution to the ocean. The main action on marine life is to repel, it will not kill marine life and destroy the marine ecological balance. The capsaicin antifouling agent used in the disclosure has a high concentration, the total capsaicin content reaches 40-80%, and the capsaicin monomer content in the total capsaicin reaches 60-70%. In the process of using, the addition amount is small, which will not affect the performance of the coating itself, and the cost is low. In the preparation process of the antifouling coating of the present disclosure, the high-concentration capsicum oleoresin is completely dissolved with an organic solvent, and then mixed uniformly with other liquid components, and finally the solid components are added, and the fouling agent and other components are fully mixed evenly by mixing and grinding with a ball mill, ensuring that the characteristics of the antifouling coating can be fully utilized.

[40] The preferred embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to the above embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the purpose of the present disclosure.

Claims

WHAT IS CLAIMED IS:

1. A capsaicin environmentally-friendly antifouling coating, wherein consisting of the following components in weight percentage: 30-50% of a film-forming material, 0.1-10% of a high-concentration capsicum oleoresin, 10-40% of a pigment filler, 5-20% of an auxiliary agent and 10-30% of a solvent.

2. The capsaicin environmentally-friendly antifouling coating according to claim 1, wherein the film-forming material is one or more of chlorinated rubber, vinyl chloride-vinyl acetate copolymer, epoxy resin, and acrylic resin; the pigment filler is one or more of iron oxide red, titanium dioxide, aluminum oxide, barium sulfate, zinc oxide, mica powder, calcium carbonate, talcum powder, kaolin, white carbon, and rosin.

3. The capsaicin environmentally-friendly antifouling coating according to claim 1, wherein the high-concentration capsicum oleoresin has a total capsaicin content of -80%, wherein the capsaicin monomer accounts for 60%-70% of the total capsaicin.

4. The capsaicin environmentally-friendly antifouling coating according to claim 1, wherein the auxiliary agent comprises a dispersant, a defoaming agent, a leveling agent, an anti-settling agent, a thickener, and a wetting agent; The solvent is one or more of toluene, xylene, butyl acetate, ethyl acetate, isobutyl acetate, butanol or cyclohexanone.

5. A method for preparing a capsaicin environmentally-friendly antifouling coating according to any one of claims 1-4, wherein the specific steps are as follows: (1) Preparation of raw materials, preparing each component by weight percentage; (2) Firstly, dissolving the high-concentration capsicum oleoresin in step (1) with a solvent completely, mixing with other liquid components uniformly, then adding the solid components to the uniformly mixed liquid components, subjecting the mixture to stirring and grinding, and then mixing evenly to obtain the coating.