Preparation method for elastic polyurethane antifouling paint

A technology of elastic polyurethane and antifouling coatings, applied in the field of coatings, can solve problems such as fish scratches, losses, hidden dangers of fishing and breeding, and achieve the effect of preventing damage and maintaining the original properties

Inactive Publication Date: 2014-10-29
上海百川通智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0014] The preparation method of elastic polyurethane antifouling paint described in the embodiment of the present invention consists of the following steps:

[0015] (1) Prepare the first group of materials, calculated according to the total weight percentage of 100%, take 50% of elastic polyester, 20% of disgusting agent, 10% of butyl acetate and 20% of polytetrafluoroethylene, each component is formed by high-speed dispersion and reconciliation Elastic polyester coating, the dispersion speed is more than 5000 revolutions per minute;

[0016] (2) Prepare the second group of materials: diurea isocyanate, with the total weight of the first group of materials as a reference, get diurea isocyanate equivalent to 10% of the weight of the first group of materials as a curing agent;

[0017] (3) Mix and stir the above two groups of materials evenly, after 20 minutes of stabilization, then dry at 60°C-80°C for 30 minutes or 8 hours for natural drying, by dip coating or roller coating...

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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...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D127/18C09D5/16
Inventor 肖钦民
Owner 上海百川通智能科技有限公司
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