Environment-friendly fishing-net copper-free protective glue, protective coating and dip coating method of protective coating

Abstract

The invention discloses an environment-friendly fishing-net copper-free protective glue. The glue comprises the following components in percentage by weight: 5%-35% of resin, 5%-28% of a modified bactericide, 7%-13% of pigments and fillers, 1%-9% of an anti-settling agent, and 30%-55% of a solvent. The modified bactericide contained by the glue provided by the invention has a bactericidal property, so that a microbial membrane generated on the surface of a substrate can be removed, therefor a hotbed attached by marine organisms can be eliminated, and staining organisms are prevented from beingattached to a fishing net for survival; and on the other hand, the glue is a copper-free protective glue, so that the biological pollution caused by copper ions is avoided. An environment-friendly fishing net copper-free protective coating can reach 35-50 micrometers, so that the weight of the fishing net is increased slightly after dip coating, the service life of the fishing net is prolonged, and the coating follows the thermal expansion principle of the fishing net. The invention further discloses a dip coating method for manufacturing the environment-friendly fishing-net copper-free protective coating. The process is simple; the cost is low; and the coating is easy to popularize and use among common fishermen, and has good environmental protection benefits and economic benefits.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to an environment-friendly fishing net copper-free protective glue, a protective coating and a dip coating method thereof. Background technique [0002] With the implementation of the "International Convention on the Control of Harmful Anti-fouling Systems of Ships" (AFS Convention) and the "Stockholm Convention on Persistent Organic Pollutants" (POPs Convention), antifouling coatings containing organotin and DDT have been completely withdrawn from the market. The production of antifouling coatings is developing in the direction of no heavy metals, no tin, low copper or no copper, and research and development of eco-friendly antifouling coatings is imperative. [0003] The current mainstream antifouling coatings in the market are tin-free self-polishing antifouling coatings. The main antifouling agent is cuprous oxide. The content of cuprous oxide in antifouling coatings can usuall...

AI Technical Summary

Problems solved by technology

[0003] The current mainstream antifouling coatings in the market are tin-free self-polishing antifouling coatings. The main antifouling agent is cuprous oxide. The content of cuprous oxide in antifouling coatings can usually reach about 50%. The antifouling effect mainly depends on oxidation. Cuprous leaching out, copper ions will also accumulate in marine organisms, but the toxicity is much lower than that of tributyltin, and it is less harmful than organotin antifouling coatings. Although it meets the current environmental protection requirements, there are still serious problems. Environmental hazards, so the development of copper-free antifouling coatings will become a new research hotspot

[0004] At present, the existing antifouling coatings, due to their complex process and high cost, lead to the rapid application of existing products among ordinary people, so that the antifouling coating technology can not really benefit the public, and solve the urgent need of ordinary people for antifouling of fishing nets need

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