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Antifoulant additive and preparation method thereof

An additive and anti-fouling technology, applied in anti-fouling/underwater coatings, biocide-containing paints, coatings, etc., can solve problems such as difficulties, discontinuities, and complicated processes, and achieve good anti-fouling effects, increased inhibition rates, The effect of improving the antifouling ability

Inactive Publication Date: 2010-04-07
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

However, some studies have also found that it is difficult to prevent surface fouling by controlling early attachments by marine bacteria. Environmental tests such as seawater scouring make this process in the early stage of biofouling very complicated and discontinuous

Method used

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  • Antifoulant additive and preparation method thereof
  • Antifoulant additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: the preparation of antifouling additive

[0018] Add 10g of acrylamide, 0.1g of acrylic acid and 100mL of distilled water successively into a 250mL four-necked flask, and pass nitrogen (N 2 ) protection for 30 minutes, add 0.05g potassium persulfate (K 2 S 2 o 8 ), continue to pass nitrogen (N 2 ) for 10 minutes, when the temperature rises to 50°C, stop heating, start timing after the temperature rises to 70°C, react for 30 minutes, add 0.03g potassium persulfate (K 2 S 2 o 8 ) continue to pass nitrogen (N 2 ) for 30 minutes;

[0019] Then the temperature was raised to 90° C., 0.25 g of potassium hydroxide (KOH) was added, and nitrogen gas (N 2 ) 10 minutes later, start timing and add dropwise 1g coupling agent vinyltriethoxysilane (AH-151), 2g octamethyltetrasiloxane (D4), 0.1g hexamethyldisiloxane (MM ) and 0.4g dimethyl sulfoxide (DMSO), dropwise in 30 minutes, stop heating after 3 hours of reaction, after cooling to room temperature, discharge...

Embodiment 2

[0021] Embodiment 2: the preparation of antifouling additive

[0022] Add 10g of acrylamide, 0.1g of acrylic acid and 100mL of distilled water successively into a 250mL four-necked flask, and pass nitrogen (N 2 ) to protect for 30 minutes, after adding 0.05g azobisisobutyronitrile, continue nitrogen gas (N 2 ) for 10 minutes, when the temperature rises to 50°C, stop heating, start timing after the temperature rises to 70°C, react for 30 minutes, add 0.03g azobisisobutyronitrile and continue to flow nitrogen (N 2 ) for 30 minutes;

[0023] Then the temperature was raised to 90° C., 0.25 g of potassium hydroxide (KOH) was added, and nitrogen gas (N 2 ) 10 minutes later, start timing and add dropwise 1g coupling agent vinyltriethoxysilane (AH-151), 2g octamethyltetrasiloxane (D4), 0.1g hexamethyldisiloxane (MM ) and 0.4g dimethyl sulfoxide (DMSO), dropwise in 30 minutes, stop heating after 3 hours of reaction, after cooling to room temperature, discharge to obtain the reactant...

Embodiment 3

[0025] Embodiment 3: the preparation of antifouling additive

[0026] Add 10g of acrylamide, 0.1g of acrylic acid and 100mL of distilled water successively into a 250mL four-necked flask, and pass nitrogen (N 2 ) protection for 30 minutes, after adding 0.05g dibenzoyl peroxide, continue nitrogen (N 2 ) for 10 minutes, when the temperature rises to 50°C, stop heating, and start timing after the temperature rises to 70°C, react for 30 minutes, add 0.03g dibenzoyl peroxide and continue nitrogen flow (N 2 ) for 30 minutes;

[0027] Then the temperature was raised to 90° C., 0.25 g of potassium hydroxide (KOH) was added, and nitrogen gas (N 2 ) 10 minutes later, start timing and add dropwise 1g coupling agent vinyltriethoxysilane (AH-151), 2g octamethyltetrasiloxane (D4), 0.1g hexamethyldisiloxane (MM ) and 0.4g dimethyl sulfoxide (DMSO), dropwise in 30 minutes, stop heating after 3 hours of reaction, after cooling to room temperature, discharge to obtain the reactant;

[0028]...

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Abstract

The invention relates to an antifouling additive and the preparation method thereof. The antifouling additive is white solid powder at normal temperature and has polyorganosiloxane structure and polyacrylamide structure. The preparation method comprises the following steps: adding acrylamide, acrylic acid and distilled water in a four-mouth flask, introducing nitrogen for protection under stirringcondition for 30 min, adding initiator, and continuously introducing nitrogen for 10 min; then rising the temperature and stopping heating, reacting for 30 min when the temperature rises to a prescribed value, adding the initiator, continuously introducing nitrogen, and reacting for 30 min; continuously heating, adding potassium hydroxide, introducing nitrogen for 10 min, then adding the mixtureofsilicane coupling agent, organic silicon monomer and dimethyl sulfoxide dropwise, reacting for 3 hr, stopping heating, cooling and discharging; and washing the reaction resultant with ethanol, drying and pulverizing to obtain the antifouling additive, which has good antifouling effect and high inhibition ability.

Description

Technical field: [0001] The invention relates to an antifouling additive and a preparation method thereof, in particular to a novel antifouling additive designed to improve the antifouling ability of a low surface energy silicone resin coating and a preparation method thereof, which belongs to marine pollution protection field. Background technique: [0002] There are a large number of marine organisms in seawater, and these marine organisms will adhere to the surface of ships and structures that have been in the seawater environment for a long time. This adhesion will increase the traveling resistance of the ship, seriously affect the sailing speed of the ship, increase fuel consumption, and at the same time damage the anti-corrosion coating on the surface of the ship and structures, thereby causing corrosion and damage on the surface of the hull and structures, seriously affecting its security. Therefore, it is very important to find a suitable way to prevent marine orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C09D5/16C08G77/442
Inventor 蔺存国张金伟
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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