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Organic-polymer-coated nano cuprous oxide and its preparation process and use

A technology of nano-cuprous oxide and organic polymers, which is applied in the treatment of dyed polymer organic compounds, biocide-containing paints, anti-fouling/underwater coatings, etc., can solve complex production technology, poor dispersion, aggregation and settlement, Affect storage antifouling effect and other issues, to achieve the effect of simple production process, strong anti-oxidation ability and good mechanical properties

Inactive Publication Date: 2005-11-30
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some disadvantages in the use of cuprous oxide, such as the dispersion of cuprous oxide particles in the coating is not good enough, easy to aggregate and settle; cuprous oxide is easily oxidized, affecting storage and antifouling effect
In addition, the current production technology of nano-cuprous oxide is complex.

Method used

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Embodiment Construction

[0008] In a 1000mL three-necked flask, add 2.9g of chitosan, 50g of copper sulfate, 5.8g of sodium chloride, and 300mL of water, stir evenly and heat up to 95°C. Dissolve 8.5 g of sodium carbonate and 23.8 g of sodium sulfite in 200 mL of water, and add them dropwise to the above-mentioned copper sulfate solution while stirring. After the dropwise addition, continue to dropwise add aqueous sodium hydroxide solution (1 mol / L) into the three-neck flask to adjust the pH value of the system to 5-7. Then keep warm and continue to stir for 30 minutes to finish the reaction. After standing still for 1 hour, a large amount of yellow particles in the reaction system sank to the bottom of the bottle. After filtering and washing with water, it is dried at 30-60° C. to obtain nano-cuprous oxide coated with organic polymer, and the particle size is 10-60 nm.

[0009] In this embodiment, if chitosan is replaced by other water-soluble organic polymer compounds such as carboxymethyl chitosa...

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Abstract

A nanometer copper-protoxide coated with organic polymer, characterized in that the grain diameter of copper-protoxide particles is from 1 to 100nm, and that the surface is coated with organic polymer, range of weight ratio of copper-protoxide particle to organic polymer being 60-90: 0.1-18. In the water solution of organic polymer, and with alkali halide and alkali weak acid salt, deoxidize divalent nantokite with reducer, and separate the resultant, the reaction temperature of said reaction being from 10 to 100 Deg. C, reaction time from 1 to 8 hours, and PH of the reaction liquid from 5 to 7. The advantage of the nanometer copper-protoxide coated with organic polymer is that, manufacturing technique is simple, and facilitated to industrialization, at the same time, the easily-reuniting problem of nanometer particulars is settled; it has a good dispersity in anti-fouling paint, a strong power of oxidation resistance, extensive and strong antifouling ability, and cohesion to paint filming material to make perfect mechanical property of paint.

Description

technical field [0001] The invention relates to a cuprous oxide, in particular to a nano cuprous oxide coated with an organic polymer, a preparation method thereof and an application in preparation of marine antifouling paint. Background technique [0002] Marine fouling organisms such as barnacles, seaweed, sea squirts, etc. are attached to various water facilities such as ships, offshore drilling platforms, buoys, marine breeding facilities, marine detection instruments, etc., which will slow down the speed of the ship and increase fuel costs. Corrosion of metals leads to a series of problems such as blockage of seawater pipelines and aquaculture cages, imbalance of underwater facilities, and instrument failure. The best way to tackle marine biofouling is to apply antifouling paint. European patent EP-A-51930 discloses a self-polishing antifouling coating containing TBT, and its excellent antifouling performance has made TBT self-polishing antifouling paint dominate the a...

Claims

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Application Information

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IPC IPC(8): C09C3/10
Inventor 于良民董磊张志明李昌诚徐焕志姜晓辉
Owner OCEAN UNIV OF CHINA
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