Slow-release long-acting fishing net antifouling coating

Abstract

The invention belongs to the technical field of antifouling coatings for fishing nets, and particularly relates to a slow-release long-acting fishing net antifouling coating comprising the following raw materials by weight: 60-65 parts of mixed resin, 16-20 parts of a slow-release antifouling agent, 3-5 parts of medium chain fatty acid triglyceride, 12-16 parts of nano calcium carbonate, 1-3 partsof gamma-aminopropyltriethoxysilane, 0.8-1.6 parts of a nitrogen-containing organic base, and 0.2-0.6 part of lignocellulose. The surface energy of a coating film of the antifouling coating is less than 20 mJ / m<2>, the coating film of the antifouling coating has a large contact angle with seawater to play an antifouling effect, wherein thiabendazole can increase the antibacterial property of a slow-release antifouling agent, cyclodextrin can prolong the action time, by rational proportioning of raw materials of the antifouling coating, the slow-release long-acting fishing net antifouling coating can effectively adhere to the surface of a fishing net to form a structurally-stable film layer which is not affected by seawater temperature and impact, the anti-corrosion and anti-fouling effectof the fishing net can be improved, meanwhile use of a copper-containing antifouling agent is avoided, and the slow-release long-acting fishing net antifouling coating is suitable for promotion.

Description

technical field [0001] The invention belongs to the technical field of antifouling coatings for fishing nets, in particular to a slow-release and long-acting antifouling coating for fishing nets. Background technique [0002] In the process of fishery development, fishing nets are an indispensable part of fishery production. Among them, fishing nets produced by traditional knotting methods have been widely used in fishery fishing. Usually, fishing nets produced by knotting methods include pull nets, sticky nets and other types of fishing nets. After the fishing net is used, it is easy to attach a large amount of dirt to its surface, which will affect the performance of the fishing net. Although many cleaning devices have been developed, they are difficult to popularize due to poor practicability. In order to improve this situation, the raw material polyethylene is usually added. The surface is coated with antifouling coatings to improve its antifouling performance and mechan...

AI Technical Summary

Problems solved by technology

[0002] In the process of fishery development, fishing nets are an indispensable part of fishery production. Among them, fishing nets produced by traditional knotting methods have been widely used in fishery fishing. Fishing nets usually produced by knotting methods include pull nets, sticky nets and other types of fishing nets. After the fishing net is used, it is easy to attach a large amount of dirt to its surface, which affects the performance of the fishing net. Although many cleaning devices have been developed, it is difficult to popularize them due to poor practicability. In order to improve this situation, the raw material polyethylene is usually added. The surface is coated with antifouling coatings to improve its antifouling performance and mechanical strength. The existing antifouling coatings are usually self-polishing antifouling coatings. The antifouling agent is mainly cuprous oxide, and the content of cuprous oxide can usually be It can reach about 50%. The anti-fouling effect is mainly achieved by the exudation of cuprous oxide. Copper ions will accumulate in marine organisms, and the toxicity is lower than that of tributyltin. Although the environmental protection requirements of the composite retaining wall, there are more serious human Environmental hazards. Copper-free antifouling coatings have been studied as a new hot spot. Although the existing antifouling coatings avoid the use of metal raw materials, their antifouling effects need to be further improved