A copper-free and tin-free low-surface antifouling paint

An antifouling paint, low surface technology, applied in antifouling/underwater paints, biocide-containing paints, coatings, etc., can solve problems such as food chain enrichment, marine pollution, etc., to reduce environmental impact, curing time Short, good matching effect

Active Publication Date: 2017-09-19
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Instead, it is mainly replaced by antifouling paints rich in copper substances. However, copper-containing substances continue to accumulate in seawater, and there are still problems of marine pollution and food chain enrichment, and their use is gradually restricted.

Method used

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  • A copper-free and tin-free low-surface antifouling paint
  • A copper-free and tin-free low-surface antifouling paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: the preparation of zinc acrylate resin (prepolymer method)

[0018] Add 50g of n-butanol and 150g of xylene into a four-neck flask equipped with a stirrer, reflux condenser, constant pressure dropping funnel, and thermometer, raise the temperature to 100°C, and then weigh 26g of acrylic acid and 50g of methyl methacrylate , 62g of ethyl acrylate, 62g of n-butyl acrylate, and 5g of azobisisobutyronitrile were added dropwise at a constant speed for 3 hours with a constant pressure dropping funnel, and the acrylic resin prepolymer was obtained after continuing to react for 3 hours . Then cool to 60°C, add 34g of hydrogenated rosin, 7.4g of zinc oxide, 20g of xylene, 40g of n-butanol, mix well and heat up to 120°C, react for 3 hours, cool to 60°C, add 3.5g of calcium hydroxide, After stirring for 1 hour, add an oil-water separator to separate the water produced in the reaction process by azeotropic separation, and obtain the hydrogenated abietic acid type z...

Embodiment 2

[0020] Embodiment two: the preparation of zinc acrylate resin (direct reaction method)

[0021] Acrylic acid zinc resin preparation reaction example one:

[0022] Add 7.4g of zinc oxide, 34g of hydrogenated rosin, 120g of xylene, and 30g of n-butanol into a 1L four-neck flask equipped with a stirrer, reflux condenser, constant pressure dropping funnel, and thermometer and raise the temperature to 120°C. After 5 hours of reaction Add 26g of acrylic acid, take out the mixture after reacting for 2h and put it in a 1L round bottom flask, add 50g of methyl methacrylate, 62g of ethyl acrylate, 62g of n-butyl acrylate, 5g of azobisisobutyronitrile, mix well, and use The constant pressure dropping funnel was used to drop the mixed solution at a constant speed for 3-4 hours into a 1L four-necked flask (containing 150g xylene) equipped with a stirrer, a reflux condenser, a constant pressure dropping funnel and a thermometer. After heat preservation for 3 hours, cool to 60°C, add 3.5g o...

Embodiment 3

[0037] Embodiment three: the preparation of plasticizer acrylic resin

[0038] Add 50g of n-butanol and 150g of xylene into a four-necked flask equipped with a stirrer, reflux condenser, constant pressure dropping funnel, and thermometer, raise the temperature to 100°C, then weigh 26g of acrylic acid, 102g of ethyl acrylate, 72g The mixed solution of n-butyl acrylate and 5g of azobisisobutyronitrile was added dropwise at a constant speed for 3 hours with a constant pressure dropping funnel, and the acrylic resin prepolymer was prepared after 3 hours of heat preservation.

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Abstract

The invention relates to an antifouling paint, in particular to a copper-free and tin-free low-surface antifouling paint. A copper-free and tin-free low-surface antifouling paint, the antifouling paint is formed by mixing component A and component B by weight: component A is mainly composed of 30-55% of film-forming substances and 3-6% of antifouling agent %, filler 15-35%, solvent 5-15% and additive 1-15%, mixed evenly and then ground to a fineness below 70μm; component B is composed of crosslinking agent, catalyst and solvent; component A and The weight ratio of component B is 9:1. The invention has the following advantages: (1) tin-free and copper-free, which effectively reduces the impact on the environment, and at the same time has excellent compatibility and short curing time; (2) the coating system can play a role in the roughness of underwater metals to a smooth effect.

Description

technical field [0001] The invention relates to an antifouling paint, in particular to a copper-free, tin-free and low-surface antifouling paint. Background technique [0002] Marine organisms grow on the surface of ships, ocean engineering and underwater facilities, causing biofouling. Biofouling not only increases energy consumption and greenhouse gas emissions, but also destroys regional ecological balance due to biological invasion, which brings huge losses to human beings and threatens the sustainable development of the environment. Applying antifouling paint is considered to be the most cost-effective method of preventing marine biofouling. Among them, organotin (TBT) antifouling paint, which was born in the 1960s, is the most effective and most widely used antifouling paint. However, TBT can disrupt the endocrine of molluscs, induce sexual aberrations, lead to population degradation and a sharp decrease in numbers, causing huge disasters to the marine ecological env...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D187/00C09D7/12C09D5/16C08F220/18C08F220/14C08F220/06C08F230/04C08G81/02
Inventor 胡建坤张海春陆阿定徐焕志李娟
Owner ZHEJIANG MARINE DEV RES INST
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