Preparation method for elastic polyurethane antifouling paint

Abstract

The invention relates to a preparation method for an elastic polyurethane antifouling paint. The method includes the steps of: taking 50% of elastic polyester, 20% of an aversive agent, 10% of butyl acetate and 20% of polytetrafluoroethylene, conducting high speed dispersion blending to form an elastic polyester paint; preparing 10% of biuret isocyanate as a curing agent; blending the two groups of materials evenly, performing stabilization for two hours, and then conducting drying at 60DEG C-80DEG C for 30min. The elastic polyurethane antifouling paint provided by the invention has good adhesion, has the same service life with nylon in the marine environment for a long time, and has good extensibility. Biuret isocyanate is a curing agent similar to nylon, can provide good adhesion, and has a stimulating effect on marine adhesion organisms, so that marine adhesion organisms and microorganisms can keep away from a nylon net. The surface slipping agent is non-toxic, and can prevent damage to marine animals. Being environment-friendly and harmless, the paint can keep the original characters of the nylon net, and can achieve the purpose of long-term use.

Description

technical field [0001] The invention relates to a coating, in particular to a method for preparing an elastic polyurethane antifouling coating for solving the problem of marine organisms adhering to nylon nets. Background technique [0002] Nylon nets mainly include nylon nets, polyethylene nets, and sunshade nets, which are widely used in plant sunshade, mariculture, flour processing, nylon screen printing, pharmaceuticals, paint filtration, well drilling and pipe protection, etc. Nylon has the characteristics of high temperature and alkali resistance. Function, polyethylene has the effect of acid resistance. In addition, it can also be widely used in industrial filtration, petroleum, chemical, printing and other products, and its specifications can be processed. However, the nature of nylon nets will change due to long-term contact with seawater and marine organisms during the use of current nylon nets in marine fisheries. In particular, some marine adherent organisms and...

AI Technical Summary

Problems solved by technology

However, the nature of nylon nets will change due to long-term contact with seawater and marine organisms during the use of current nylon nets in marine fisheries. In particular, some marine adherent organisms and microorganisms rely on and adsorb on nylon nets, which are harmful to fishing and aquaculture. It brings certain hidden dangers; thus, in order to ensure the stability of nylon net structure and material and the safety of marine culture, it is necessary to carry out coating treatment on its surface. The anti-fouling effect is poor and the price is expensive, which has caused great difficulties in transportation and investment, and is easy to cause scratches on the body of fish (or marine economic organisms), thereby causing fish (or marine economic organisms) to become diseased. cause losses; therefore, based on the above analysis, it is necessary to effectively innovate existing technologies