Preparation method and application of main chain fracture type polyacrylic acid silane ester resin

一种聚丙烯酸、主链断裂的技术，应用在硅烷酯树脂领域，能够解决很难达到自抛光效果等问题，达到均匀和彻底水解抛光、改善溶解性、优异减阻性能的效果

Active Publication Date: 2013-11-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the static stage, it is difficult to achieve the ideal self-polishing effect only by seawater artesian flow

Method used

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  • Preparation method and application of main chain fracture type polyacrylic acid silane ester resin
  • Preparation method and application of main chain fracture type polyacrylic acid silane ester resin
  • Preparation method and application of main chain fracture type polyacrylic acid silane ester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 50g of caprolactone, 50g of trimethylsilyl methacrylate, 0.1g of methanol and 100mL of xylene into a dry 250mL three-neck flask with a stirrer and a thermometer, add 100μL of phosphazene (t‐BuP 4 ) in n-hexane solution, reacted at 25°C for 6h, precipitated in methanol, and dried in vacuum to obtain poly(caprolactone-trimethylsilyl methacrylate), with a yield of 90%. from figure 1 1730cm appears in the infrared spectrum ‐1 (corresponding to the ester group absorption peak of caprolactone), 2860cm ‐1 (corresponds to the CH of caprolactone 2 absorption peak) and 2950cm ‐1 (corresponding to the CH of the silane ester 3 absorption peak), indicating that the target product was successfully synthesized. figure 2 The chemical shift δ=0.87 in the NMR spectrum (corresponding to the CH of the silane ester 3 absorption peak) and δ=1.32‐1.45ppm, 1.55‐1.72ppm, 2.25‐2.40ppm, 3.98‐4.17ppm appeared four peaks (corresponding to the CH of caprolactone 2 absorption peak), furth...

Embodiment 2

[0033] Add 10g lactide, 90g triisopropylsilyl acrylate, 0.01g diethylene glycol and 100mL tetrahydrofuran into a 250mL sealed tube, freeze with liquid nitrogen, replace nitrogen three times and inject 70μL of t-BuP under nitrogen atmosphere 4 n-hexane solution, melted and sealed, reacted at 60°C for 2h, then precipitated in 100mL of methanol, dried in vacuum for 12h, the yield was 94%, and the number average molecular weight was 1.5×10 by gel permeation chromatography. 4 g / mol. 20g of this polymer was stirred and mixed with 120g of cuprous oxide, 20g of pyridine triphenylborane, 10g of iron oxide red and 30g of methyl isobutyl ketone to prepare a marine antifouling paint. By brushing, a film was formed on the epoxy resin board, and a shallow sea hanging board experiment was carried out in Xiamen Sea (2012.4-2013.2), and no marine organisms grew for 10 months.

Embodiment 3

[0035] Add 180g of ethylene carbonate, 10g of tri-n-butylsilyl acrylate, 10g of methyl methacrylate, 0.02g of methanol into a 500mL three-necked flask, freeze with liquid nitrogen, replace the nitrogen three times, and quickly inject 70 μL of t-BuP4 under a nitrogen atmosphere n-hexane solution, reacted at 150°C for 12h. After the reaction, precipitated in methanol, filtered, vacuum-dried, the yield was 90%, and its number-average molecular weight detected by gel permeation chromatography was 2.4×10 4 g / mol. The polymer 30g, with 40g cuprous oxide, 7g 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 7g zinc oxide, 6g calcium carbonate, 3g bentonite, and 7g butyl Ketones are stirred and mixed to make marine antifouling coatings. By brushing, a film was formed on the epoxy resin board, and a shallow sea hanging board experiment was carried out in Xiamen Sea (2012.4-2013.4), and no marine organisms grew for 12 months.

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Abstract

The invention discloses a preparation method and an application of main chain fracture type polyacrylic acid silane ester resin. The method comprises the following steps of: mixing a cyclic monomer, a vinyl monomer and a vinyl silane ester monomer in a solvent according to a proportion, and then, adding a composite initiator accounting for 0.01-5% of the total mass percent of the monomers, and reacting at a temperature of 25-150 DEG C under the protection of argon or nitrogen to prepare the main chain fracture type polyacrylic acid silane ester resin; and the monomers are composed of 5-95wt% of cyclic monomer, 0-90wt% of vinyl monomer and 5-95wt% of vinyl silane ester monomer. According to the resin obtained by the invention, the side chain silane ester can hydrolyze under the action of seawater and the polyester chain segment of a main chain can generate chain scission under the action of seawater, thereby solving the dependence of traditional self-polishing materials on navigational speed, effectively regulating and controlling a stain-proofing agent to release at a constant speed, maintaining active substances on the coating surface of a ship and well meeting the anti-fouling requirements of ships, submarines and offshore production platform facilities with low navigational speeds.

Description

technical field [0001] The invention relates to a silane ester resin, in particular to a preparation method and application of a main chain rupture type polyacrylic silane ester resin; the application is mainly in the technical field of marine antifouling materials. Background technique [0002] Marine biofouling refers to the biofouling formed by the attachment and growth of marine microorganisms, plants and animals on the surface of ships and offshore facilities, which is harmful to marine transportation and the exploration, development and utilization of marine resources. In the field of national defense, marine biofouling has long been plagued by marine biofouling. For example, marine biofouling will accelerate the corrosion of ship bottom steel plates, reduce the service life of weapons and equipment, and cause corrosion damage that requires frequent periodic maintenance by manpower, which seriously affects The combat effectiveness of the navy and caused huge economic l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F230/08C08G63/695C08G63/08C08F218/00C08F220/14C08G65/16C09D133/14C09D131/00C09D171/00C09D133/12C09D5/16
CPCC08G65/16C09D5/165C09D143/04C09D171/00C08F230/085C08F220/14C08F30/08C08G63/08C08G63/695C08G65/2615C08G77/14C09D5/16C09D5/1668C09D5/1675C09D133/10C09D167/04
Inventor 张广照马春风
Owner SOUTH CHINA UNIV OF TECH
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