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Tin-free low surface energy antifouling coating and preparation thereof

An antifouling coating and low surface energy technology, applied in antifouling/underwater coatings, coatings, biocide-containing paints, etc., can solve the problem that underwater antifouling cannot be carried out, no in-depth research has been carried out, and environmental pollution cannot be ignored And other issues

Active Publication Date: 2012-07-04
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, RTV silicone rubber type low surface energy antifouling coatings need to use dibutyltin dilaurate. Although the amount used is very small, dibutyltin dilaurate is a widely used additive with a large total amount, which is not acceptable for environmental pollution. ignore
[0003] Chinese patent CN101173101A discloses a one-component deketoxime type room temperature vulcanized silicone rubber composition for use in electronic products. Tetrabutylketoxime silane is used as a crosslinking agent, and dibutyltin dilaurate is used for catalysis, which cannot be used for Underwater antifouling
How to remove dibutyltin dilaurate in room temperature vulcanized silicone rubber antifouling coatings, and further use of zinc (meth)acrylate in room temperature vulcanizing silicone rubber antifouling coatings has not been studied in depth

Method used

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  • Tin-free low surface energy antifouling coating and preparation thereof
  • Tin-free low surface energy antifouling coating and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First prepare the mixed solution of the anhydrous chloride or vitriol of zinc (meth)acrylate used in the present invention and divalent metal:

preparation example 1

[0023] In a four-necked flask equipped with stirring, a condenser, a dropping funnel, and a thermometer, 30.0 g of propylene glycol monomethyl ether and 12.9 g of zinc oxide were added, and the mixture was heated to 75° C. while stirring. Add 0.3 milliliters of 0.1mol hydrochloric acid, add dropwise a mixture of 14.3 methacrylic acid and 12.0 mol acrylic acid, and control the rate of addition. After 4 hours, add 10.0 grams of propylene glycol monomethyl ether and 20.5 grams of anhydrous calcium chloride mixed solution, and the reaction solution becomes After becoming transparent, the propylene glycol monomethyl ether solution A1 of zinc (meth)acrylate and calcium chloride was obtained.

preparation example 2

[0025] In a four-neck flask equipped with stirring, condenser, addition funnel, and thermometer, add 67.0% propylene glycol monomethyl ether solution of zinc (meth)acrylate with a solid content of 43.1% and a unit ratio of methacrylic acid to acrylic acid of 1:1. gram, containing 3.7 grams of water, the mixture was heated to 75°C with stirring, and 33.0 grams of anhydrous copper sulfate were added. After the reaction solution became transparent, a propylene glycol monomethyl ether solution A2 of zinc (meth)acrylate and calcium chloride was obtained.

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Abstract

The invention relates to the field of antifouling coating, in particular to room temperature vulcanization silicon rubber type antifouling coating and usage thereof. The room temperature vulcanization silicon rubber type antifouling coating is characterized by adopting de-ketoxime room temperature vulcanization silicon rubber as raw materials, adding (methyl) crylic acid and divalent metal anhydrous chloride or sulfate mixed solution to serve as cross-linking accelerating agents and containing no dibutyltin dilaurate. Therefore, the room temperature vulcanization silicon rubber type antifouling coating can reduce pollution to environment and keep good antifouling performance.

Description

technical field [0001] The invention relates to the field of antifouling coatings, in particular to a room temperature vulcanized silicone rubber antifouling coating and its application. Background technique [0002] Human beings have been facing the problem of marine biofouling since they exploited and developed the ocean. Marine biofouling will increase the weight of underwater structures and water flow resistance, resulting in serious economic losses, and even damage structures, leading to safety accidents. For safety and benefit, the common practice is to apply marine antifouling paint. However, in order to protect the living environment and personal safety, people continue to legislate to limit the application of harmful components in antifouling coatings, and antifouling coatings are forced to be replaced. At present, organotin-free self-polishing antifouling coatings and low surface energy antifouling coatings have become the mainstream in the market and have achiev...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D5/16
Inventor 陈绍平康思波国耀东刘希燕蒋健明
Owner MARINE CHEM RES INST