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Biodegradable antifouling marine coating and preparation method thereof

A marine antifouling and coating technology, applied in the field of coating technology application, can solve the problems of poor antifouling performance and mechanical properties, high price, high energy, etc.

Active Publication Date: 2015-05-06
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organofluorine and silicone have their own advantages and disadvantages: fluororesin has a lower critical surface energy and better mechanical properties, but because fluororesin is a rigid polymer, surface fouling bioshedding requires high energy and is expensive; silicone resin The price is lower than that of fluororesin coating, but its antifouling performance and mechanical properties are poor

Method used

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  • Biodegradable antifouling marine coating and preparation method thereof
  • Biodegradable antifouling marine coating and preparation method thereof
  • Biodegradable antifouling marine coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Mix lactide and hydroxyethyl methacrylate with a molar ratio of 15:1, add 0.1% catalyst stannous octoate, and 2 Under protection, heat and melt first, then raise the temperature to 100° C., and react for 4 hours. Dissolved with chloroform, precipitated with methanol, and dried to obtain a white solid hydroxyethyl methacrylate-polylactic acid macromonomer. Its infrared spectrum is shown in figure 1 , 1759.1cm -1 The strong absorption peak that appears at is the characteristic absorption peak of ester carbonyl, 3446.8cm -1 is the O-H stretching vibration at one end of the PLLA chain, and the C-O stretching vibration peak appears at 1093.6cm -1 and 1186.2cm -1 , the group appears in HEMA, PLLA, and the connection between HEMA and PLLA is also C-O; at 1653cm -1 The absorption peak at shows that there is a -C=C-bond, and the double bond exists in HEMA; at 1384.9cm -1 and 1458.2cm -1 -CH- and -CH respectively 3 The bending vibration peak is at 3022-2900cm -1 -CH-...

Embodiment 2

[0041] Mix glycolide with hydroxyethyl methacrylate at a molar ratio of 10:1, add 0.08% catalyst stannous octoate, and 2 Under the protection, heat and melt first, then raise the temperature to 110° C., and react for 6 hours. Dissolve in chloroform, precipitate out with methanol, and dry to obtain a white solid hydroxyethyl methacrylate-polyglycolide macromonomer. use N 2 Replace the air in the device, and put the mixed solvent (mixture of ethyl acetate, ethanol, and toluene with a mass ratio of 1:4:6) and hydroxyethyl methacrylate-polyglycolide macromer in a four-necked flask, Add methyl methacrylate, styrene, ethyl acrylate, butyl acrylate, and hydroxyethyl acrylate monomers dropwise, rapidly raise the temperature to 45°C, then start to add azobisisobutyronitrile for 2 hours, drop 2 / 3. Then keep warm for 2 hours, then drip the remaining azobisisobutyronitrile, react for 2 hours, and finally keep warm for 1 hour to stop the reaction, and get a light yellow, uniform viscous...

Embodiment 3

[0043] Mix caprolactide and hydroxyethyl methacrylate with a molar ratio of 5:1, add 0.05% catalyst stannous octoate, in N 2 Under the protection, heat and melt first, then raise the temperature to 110° C., and react for 10 hours. Dissolved with chloroform, precipitated by methanol, and dried to obtain a white solid hydroxyethyl methacrylate-polycaprolactide macromonomer. use N 2 The air in the device was replaced, and the mixed solvent (a mixture of butyl acetate, ethanol, and toluene with a mass ratio of 1:3:5) and hydroxyethyl methacrylate-polycaprolactide macromonomers were placed in a four-necked flask, Add methyl methacrylate, styrene, ethyl acrylate, butyl acrylate, and hydroxyethyl acrylate monomers dropwise, rapidly raise the temperature to 75°C, then start to add azobisisobutyronitrile for 2 hours, and add 2 / 3 , then keep warm for 2 hours, then drop the remaining azobisisobutyronitrile, react for 2 hours, and finally keep warm for 1 hour to stop the reaction, and g...

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Abstract

The invention relates to a biodegradable antifouling marine coating and a preparation method thereof. The synthetic antifouling marine coating is prepared from the following raw materials in percentage by weight: 65%-85% of copolymer, 10%-30% of a solvent, 1%-2% of nano SiO2, 1%-2% of nano TiO2, 1%-1.5% of KLE-333, 1%-2% of KF-64 and 0.5%-1% of KSL-52. The synthetic biodegradable antifouling marine coating can be hydrolyzed under the action of seawater and the like; the surface layer automatically falls off; the coating has self-polishing property; and the surface energy of a base material is reduced, so that the base material has dual characteristics of self-polishing property and low surface energy. The nano TiO2 is added to the coating as an antifouling agent; growth of planktons in sea and adhesion of the coating can be inhibited under the photo-catalysis action; and the problems that an existing single antifouling marine coating is poor in use effect and large in dosage, and generates secondary pollution to a marine environment are solved.

Description

technical field [0001] The invention relates to a biodegradable marine antifouling paint and a preparation method thereof, which belong to the application field of paint technology. technical background [0002] The prevention and control of marine biofouling has been an important topic of research since human beings engaged in marine activities. Marine biofouling not only corrodes the surface of the hull, wharf, marine oil pipeline and offshore drilling platform, but also causes roughness on the surface of the hull, which brings great frictional resistance, and also increases the weight of the hull and reduces the speed of the ship. More fuel is consumed, resulting in an increase in harmful emissions. Regarding the prevention and control of marine pollution, various solutions have appeared in the history of human navigation. Among them, the most effective and popular antifouling method is the tributyltin self-polishing antifouling coating (TBT-SPC) developed in the 1970s....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/16C09D7/12C08F283/01C08F220/14C08F212/08C08F220/18C08F220/28C08G63/08
CPCC08F283/01C08G63/08C08K2201/011C08L2205/025C08L2205/035C09D5/1618C09D7/20C09D7/61C09D7/63C09D7/65C09D151/08C08L83/12C08L101/06C08K2003/2241C08K3/36C08F220/14C08F212/08C08F220/1804C08F220/281
Inventor 郝红闵江陈琛李卓樊安
Owner NORTHWEST UNIV(CN)
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