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Non-toxic or low-toxicity anti-fouling coating prepared by utilizing Chinese medicinal crop gallnut solvent extract

A kind of antifouling paint and gallnut technology, which is applied in non-toxic and low-toxic new antifouling paint, Chinese herbal medicine Gallnut extract as marine antifouling agent, can solve the problems of difficult sampling of marine organisms, high price, low output and distribution, etc. , to achieve broad anti-fouling and broad-spectrum activity, reduce pollution and harm, and reduce the effect of dosage

Inactive Publication Date: 2007-03-28
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty in sampling marine organisms, less yield and distribution, lower content of active substances (<<1%), complex extraction process, and high price, the product is difficult to be practically applied
Moreover, there is no research on the preparation of antifouling coatings for marine antifouling by extracting active substances from terrestrial Chinese medicinal materials as antifouling agents

Method used

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  • Non-toxic or low-toxicity anti-fouling coating prepared by utilizing Chinese medicinal crop gallnut solvent extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of water extract of Galla Chinensis

[0034] Use a high-speed micro pulverizer to crush 800 grams of gall shells. After crushing, pass through a 60-mesh sieve. Add 500 grams of the upper part of the sieve to the Soxhlet extractor. Add 2000 ml of double distilled water, soak for 24 hours, and boil and reflux for 10 hours. Then the extract is filtered out, placed in a rotary thin film evaporator, concentrated under reduced pressure at 0.9 Mpa, and dried naturally at room temperature to prepare a paste to obtain a water extract of Galla Chinensis.

Embodiment 2

[0036] Preparation of Galla Chinensis Ethanol Extract

[0037] Use a high-speed micro pulverizer to crush 1000 grams of gall shells. After crushing, pass through a 60-mesh sieve. Take 500 grams of the upper part of the sieve and add it to a Soxhlet extractor. Add 2000 ml of ethanol, soak for 48 hours, and boil and reflux for extraction for 20 hours. Then the extract is filtered out, placed in a rotary thin film evaporator, concentrated under reduced pressure at 0.9Mpa into a paste, and dried naturally at room temperature to obtain an ethanol extract of Galla Chinensis.

Embodiment 3

[0039] Preparation of Galla Chinensis Ethyl Acetate Extract

[0040] Use a high-speed micro pulverizer to crush 900 grams of gall shells. After crushing, pass through a 60-mesh sieve. Take 500 grams of the upper part of the sieve and add it to a Soxhlet extractor. Add 2000 ml of ethyl acetate, soak for 24 hours, and boil and reflux for 20 hours. Then the extract is filtered out, put into a rotary thin film evaporator, concentrated under reduced pressure at 0.9Mpa into a paste, and air-dried naturally at room temperature to obtain an ethyl acetate extract of gall.

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Abstract

The invention relates to nontoxic or low toxic anti-fouling paint made by Chinese gall solvent extract which includes resin base metal, dye, anti-fouling agent, and limed rosin, and various auxiliary agents. The anti-fouling agent is formed by Chinese gall extract, or Chinese gall extract and cuprous oxide composite. It is proved that the anti-fouling paint has obvious anti-fouling effect. The new type low toxic anti-fouling paint can effectively prevent marine life defiling, and reduce cuprous oxide use level to realize pollution abatement by properly adjusting the composite proportion of the Chinese solvent extract and cuprous oxide.

Description

Technical field [0001] The invention belongs to the technical field of marine non-toxic biological antifouling technology, and specifically relates to a new non-toxic and low-toxic antifouling paint that inhibits the growth of marine organisms on marine structures, and more specifically, to the use of Chinese medicinal material Galla Chinensis extract As a marine antifouling agent, a new type of antifouling paint is prepared to prevent the fouling of marine organisms. Background technique [0002] Marine biological fouling refers to the adverse effects of biological attachment on the surface of marine structures on the performance of sea immersion materials. Because marine structures are in contact with seawater for a long time, their surfaces become carriers for marine organisms to attach and grow, causing biofouling. Marine biofouling can cause increased material corrosion, increased ship load, slower speed, and even interference with sonar signals and blockages. The pipeline t...

Claims

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Application Information

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IPC IPC(8): C09D5/14
Inventor 付玉彬郑纪勇郭航徐飞鹏叶章基赵晓燕金晓鸿
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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