Surface modification method of cuprous oxide antifouling agent

Abstract

The invention relates to a surface modification method of a cuprous oxide antifouling agent, which comprises the following steps that firstly, chitosan is dissolved in an acetic acid solution; secondly, the chitosan and a liquid mixture formed by dispersing cuprous oxide in a colloidal solution of gum arabic are mixed to obtain a chitosan-gum arabic cuprous oxide suspension; thirdly, the chitosan-gum arabic cuprous oxide suspension is cured to form a microcapsule solution under the action of a curing agent glutaraldehyde; and finally, the microcapsule solution is subjected to centrifugal separation and washing and drying to obtain chitosan-gum arabic cuprous oxide microencapsulated powder, i.e., the surface-modified cuprous oxide antifouling agent. The cuprous oxide antifouling agent prepared by a microencapsulation technology is not easily coagulated during the storage of antifouling paint, and the problem that the untreated cuprous oxide in the antifouling paint is precipitated is solved, therefore the antifouling efficiency is improved and the service life of the antifouling paint is prolonged.

Description

technical field

[0001] The invention relates to a preparation method of an antifouling agent for antifouling paint, in particular to a method for surface modification of a cuprous oxide antifouling agent. Background technique

[0002] The important problem encountered by ships navigating in the sea is the attachment and fouling of marine organisms to the bottom of the ship. Marine fouling organisms attaching to the bottom of the ship will increase navigation resistance, reduce ship speed, and consume more fuel; attaching to marine breeding nets will cause It will block the mesh and reduce the seawater exchange efficiency, which can lead to stunted or even death of cultured fish and shellfish; attach to marine instruments, which will cause signal distortion and performance degradation of the instruments; attach to torpedoes, increase weight and navigation resistance, and cause torpedo imbalance and failure. resulting in heavy losses. Applying antifouling coatings is an impor...