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A kind of modified organosilicon polymer, preparation method and application thereof

An organosilicon and polymer technology, applied in the field of modified organosilicon polymers, can solve the problems of limited antifouling effect of antifouling coatings, difficult adhesion of marine organisms, complicated growth mechanism of marine organisms, etc., and achieves low cost and synthetic method. The effect of convenience and simple preparation method

Active Publication Date: 2016-06-08
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paralytic biological antifouling agent achieves antifouling by extracting sodium benzoate and tannin from the organism to anesthetize the larvae of attached organisms. This kind of antifouling coating has limited antifouling effect, and the extraction of antifouling agent The cost is too high, so it is difficult to achieve widespread use; poisonous chemical antifouling agents generally play an antifouling role through the strong poisonous killing of organisms by organotin and cuprous oxide, and the International Maritime Organization has banned the use of organic Tin-based marine antifouling coatings, and copper-based antifouling coatings will eventually be eliminated because they also have a certain impact on the marine environment
The antifouling coatings with low surface energy mainly refer to organic silicon or fluorine-containing polymer materials. Due to the low surface energy characteristics of these materials, marine organisms are difficult to attach or not firmly attached. They are washed away by water when ships are sailing. It is easier to remove pollutants with special cleaning equipment, but due to the complicated attachment and growth mechanism of marine organisms, organisms such as diatoms are still easy to adsorb on low surface energy antifouling coatings, so simply reduce the surface energy of the material Limited protection against marine fouling

Method used

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  • A kind of modified organosilicon polymer, preparation method and application thereof
  • A kind of modified organosilicon polymer, preparation method and application thereof
  • A kind of modified organosilicon polymer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Step 1: In a 500ml round bottom flask, add 44.8g of bis(2-hydroxyethoxy)propyl-terminated polydimethylsiloxane (molecular weight 5300), 2.24g of 4,4'-azobis(4-cyano pentyl valeric acid), 0.96g catalyst 4-dimethylaminopyridine-p-toluenesulfonic acid, 5.00g dehydrating agent N, N'-dicyclohexylcarbodiimide, 150g dichloromethane, 30gDMF, stirring reaction at room temperature for 24h, After the reaction is finished, the precipitate is removed by filtration, and methanol is added to the filtrate to generate a precipitate, and the precipitate is dried at room temperature and under vacuum conditions to obtain the organosilicon macromolecular initiator [ 1 HNMR (CDCl 3 , 400MHz): δ0.1(s, (CH 3 ) 2 Si), 0.6(m, Si-CH 2 ), 1.6-1.7 (s, NC-CH 3 ), 3.5-3.7 (m, -CH 2 -O-CH 2 ), 4.3 (-CH 2 -O-C(=O))];

[0047] Step 2: Add 29.60g of silicone macroinitiator, 31.40g of dimethylaminoethyl methacrylate, 28.8g of 2-carboxyethyl acrylic acid ester, 120g of toluene and 120g of ethanol i...

Embodiment 2

[0050] Step 1: In a 500ml round bottom flask, add 44.8g of bis(2-hydroxyethoxy)propyl-terminated polydimethylsiloxane (molecular weight 10600), 3.36g of 4,4'-azobis(4-cyano pentyl valeric acid), 1.44g catalyst 4-dimethylaminopyridine-p-toluenesulfonic acid, 6.00g dehydrating agent N, N'-dicyclohexylcarbodiimide, 150g dichloromethane, stirred and reacted for 24h at room temperature, and the reaction ended Afterwards, the precipitate is removed by filtration, methanol is added to the filtrate to form a precipitate, and the precipitate is dried at room temperature and under vacuum conditions to obtain an organosilicon macromolecular initiator. [ 1 HNMR (CDCl 3 , 400MHz): δ0.1(s, (CH 3 ) 2 Si), 0.6(m, Si-CH 2 ), 1.6-1.7 (s, NC-CH 3 ), 3.5-3.7 (m, -CH 2 -O-CH 2 ), 4.3 (-CH 2 -O-C(=O))]

[0051] Step 2: Add 29.60g of silicone macroinitiator, 31.40g of dimethylaminoethyl methacrylate, 28.8g of 2-carboxyethyl acrylic acid ester, and 240g of toluene into a 500ml four-neck flas...

Embodiment 3

[0054] Step 1: In a 500ml round bottom flask, add 44.8g of bis(2-hydroxyethoxy)propyl-terminated polydimethylsiloxane (molecular weight 5300), 2.24g of 4,4'-azobis(4-cyano pentyl valeric acid), 0.96g catalyst 4-dimethylaminopyridine-p-toluenesulfonic acid, 5.00g dehydrating agent N, N'-dicyclohexylcarbodiimide, 150g dichloromethane, 30gDMF, stirring reaction at room temperature for 24h, After the reaction is completed, the precipitate is removed by filtration, methanol is added to the filtrate to form a precipitate, and the precipitate is dried at room temperature under vacuum conditions to obtain an organosilicon macromolecular initiator. [ 1 HNMR (CDCl 3 , 400MHz): δ0.1(s, (CH 3 ) 2 Si), 0.6(m, Si-CH 2 ), 1.6-1.7 (s, NC-CH 3 ), 3.5-3.7 (m, -CH 2 -O-CH 2 ), 4.3 (-CH 2 -O-C(=O))].

[0055] Step 2: Add 29.60g of organosilicon macromolecular initiator, 47.10g of dimethylaminoethyl methacrylate, 14.40g of 2-carboxyethyl acrylic acid ester, 120g of toluene and 120g of eth...

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Abstract

The invention discloses a modified organosilicon polymer. The modified organosilicon polymer has microphase separation prosperities and structural characteristics of hydrogel and ampholyte simultaneously, the modified organosilicon polymer can effectively prevent marine organisms from being attached to facility surfaces when modified organosilicon polymer is used for marine antifouling, and the modified organosilicon polymer is an effective polymer for marine antifouling. The invention further provides a preparation method of the modified organosilicon polymer, and organosilicone and methacrylate or acrylate polymers with amphoteric structures are subjected to copolymerization to obtain the modified organosilicon polymer. Simultaneously, the invention further discloses applications of the modified organosilicon polymer in preparing environment friendly marine antifouling coatings.

Description

technical field [0001] The invention belongs to the field of marine antifouling materials, and in particular relates to a nontoxic and environmentally friendly modified organosilicon polymer. Background technique [0002] Almost all human marine activities will face a common problem-marine biofouling, which will have a very adverse impact on ships, pipelines, marine instruments, and aquaculture. In order to reduce the huge economic loss caused by marine biofouling, people have studied a variety of antifouling technologies, among which the application of antifouling coatings is an important and economical and efficient way to solve the problem of fouling. [0003] The marine antifouling coatings with better antifouling effects are mainly two types: coatings containing low-toxic and safe antifouling agents and antifouling coatings with low surface energy. Coatings containing low-toxic and safe antifouling agents rely on the paralysis or poisonous effect of antifouling agents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C09D153/00C09D5/16
Inventor 许季海乌学东张昕赵文杰彭叔森
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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