Preparation method of natural fishnet antifoulant

Abstract

The invention relates to the technical field of anti-fouling paints, and in particular relates to a preparation method of a natural fishnet antifoulant. The preparation method comprises the steps: extracting Naga chilli serving as a raw material to obtain a capsaicin liquid, extracting garlic serving as a raw material to obtain alliin concentrate, and reacting the capsaicin liquid and the alliin concentrate with palm oil, glycerol, denatonium benzoate, snail mucus and sodium carboxymethylcellulose under stirring to obtain the fishnet antifoulant. The adopted raw materials are environment-friendly and nontoxic; the prepared antifoulant is capable of paralyzing the nerves of attaching organisms and disturbing the mucus secretion of marine organisms, has inhibition effect on the propagation of the marine fouling organisms, does not destroy the marine environment and biological chain, can generate strong stimulus to the sense organs of the fouling organisms, and has good dispelling action on soft fouling organisms; the processed antifoulant is difficult to attach for the fouling organisms due to good smoothness, is capable of guaranteeing long-time permeation of anti-fouling components from the raw materials due to good permeability and has period of validity up to 2 years.

Description

technical field [0001] The invention relates to the technical field of antifouling coatings, in particular to a method for preparing a natural fishing net antifouling agent. Background technique [0002] With the improvement of human living standards, the demand for seafood has increased. After years of overfishing, the seafood in the ocean is seriously insufficient, so the marine aquaculture industry is booming. It is increasing year by year, and with the development of the industry, new problems arise spontaneously. The marine environment is an environment with severe corrosion and biofouling. After the sailing ships are attached to organisms, the frictional resistance of surface navigation will be significantly increased. The constant temperature of fishing nets The immersion depth of fishing gear generally ranges from 0-20m, and it is easy to adhere to marine organisms. The main species are algae, rotifers, bryozoans, barnacles, etc., and antifouling coatings are one of ...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of human living standards, the demand for seafood has increased. After years of overfishing, the seafood in the ocean is seriously insufficient, so the marine aquaculture industry is booming. It is increasing year by year, and with the development of the industry, new problems arise spontaneously. The marine environment is an environment with severe corrosion and biofouling. After the sailing ships are attached to organisms, the frictional resistance of surface navigation will be significantly increased. The constant temperature of fishing nets The immersion depth of fishing gear generally ranges from 0-20m, and it is easy to adhere to marine organisms. The main species are algae, rotifers, bryozoans, barnacles, etc., and antifouling coatings are one of the main methods to solve marine antifouling problems. However, the current antifouling coatings generally have certain toxicity, which is easy to cause secondary pollution to the marine environment, the antifouling effect is not obvious, and the antifouling duration is not long.