Preparation method for self-polishing antifouling resin

An antifouling resin and self-polishing technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the problem that the cyclic ester monomer is expensive, restricts the industrial production of self-polishing antifouling coatings, Single type and other problems, to achieve the effect of long-term antifouling, low cost and simple preparation process

Inactive Publication Date: 2020-04-21
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former monomer type is too single, while the latter cyclic ester monomer is expensive, which greatly limits the industrial production of self-polishing antifouling coatings

Method used

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  • Preparation method for self-polishing antifouling resin
  • Preparation method for self-polishing antifouling resin
  • Preparation method for self-polishing antifouling resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Get 11.41g ethyl methacrylate, 2.60g molecular weight is the polycaprolactone oligomer of the terminal double bond of 2600g / mol, 0.27g α-ethyl chloropropionate, 0.14g cuprous bromide and 0.31g bipyridine Place in a stirred 150mL round-bottomed flask, then add 14.01g of diethylene glycol dimethyl ether as a solvent, freeze with liquid nitrogen, replace argon three times, and then place it at 60°C for 24 hours. After the reaction, the reaction product was dissolved in tetrahydrofuran and then precipitated in 1000 mL of anhydrous methanol to obtain a resin for self-polishing antifouling coatings. The polymer weight average molecular weight is 4.02×10 5 g / mol, the molecular weight distribution is 5.73. The resin was coated on the steel plate pre-coated with anti-corrosion primer, and the shallow sea hanging plate test showed that no marine organisms grew on the surface within 8 months.

Embodiment 2

[0030] Get 10.01g methyl methacrylate, 5.00g molecular weight is the polyglycolide oligomer of the terminal double bond of 500g / mol, 1.95g α-bromo ethyl isobutyrate, 1.08g ferrous bromide and 1.56g bismuth Dipyridine was placed in a stirred 100mL round-bottomed flask, then 15.01g of tetrahydrofuran was added as a solvent, frozen in liquid nitrogen, replaced with argon three times, and placed at 40°C for 24h. After the reaction, the reaction product was dissolved in tetrahydrofuran and then precipitated in 500 mL of anhydrous methanol to obtain a resin for self-polishing antifouling coatings. The polymer weight average molecular weight is 1.28×10 5 g / mol, the molecular weight distribution is 8.33. The resin was coated on the steel plate pre-coated with anti-corrosion primer, and the shallow sea hanging plate test showed that no marine organisms grew on the surface within 8 months.

Embodiment 3

[0032] Get 8.61g methyl acrylate, 3.80g molecular weight is the poly(lactide-caprolactone) oligomer of terminal double bond of 3800g / mol, 0.50g molecular weight is the polyethylene glycol methyl acrylate of 500g / mol, 0.76 g methyl-2-(dodecyltrithiocarbonate)-2-methylpropionate, 0.17g azobisisobutyronitrile was placed in a stirred 150mL round bottom flask, then added 12.41g Toluene was used as a solvent, frozen in liquid nitrogen, replaced by argon three times, and reacted at 80°C for 24 hours. After the reaction, the reaction product was dissolved in tetrahydrofuran and then precipitated in 1000 mL of anhydrous methanol to obtain a resin for self-polishing antifouling coatings. The polymer weight average molecular weight is 4.89×10 5 g / mol, the molecular weight distribution is 6.91. The resin is coated on the steel plate pre-coated with anti-corrosion primer, and the shallow sea hanging plate test shows that no marine organisms grow on the surface within 10 months.

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Abstract

The invention belongs to the technical field of marine antifouling materials, and particularly relates to a preparation method for self-polishing antifouling resin. The resin is a branched polymer with self-polishing performance, which is prepared by taking a double-bond-terminated polyester oligomer as a branched monomer, (methyl) acrylate as a monomer and active/controllable free radical polymerization as a means. In the using process of the resin, degradation of polyester chain segments in the resin and short primary chain length endow the resin with excellent self-polishing performance. The resin prepared by using the preparation method provided by the invention realizes self-polishing through degradation of branched chain segments in a polymer. According to the method, various functional vinyl monomers can be conveniently added into the resin preparation process to obtain self-polishing antifouling paint resin with different properties. Meanwhile, the preparation method provided by the invention is simple in operation method, low in cost and applicable to industrial production.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling materials, and in particular relates to a preparation method of self-polishing antifouling resin. Background technique [0002] The marine biofouling caused by the adsorption, growth and reproduction of marine microorganisms, animals and plants on the surface of marine facilities has seriously affected marine development and maritime activities. Applying antifouling coatings, especially self-polishing antifouling coatings, is the most convenient, effective and economical way to solve this problem. However, although the traditional organotin self-polishing coating works well, it seriously damages the marine ecological environment. Therefore, tin-free self-polishing antifouling coatings have become a research hotspot in this field. These coatings include copper acrylate polymers, zinc acrylate polymers, and silyl acrylate polymer based self-polishing coatings. However, the self-polishi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F220/14C08F220/18C09D151/08C09D5/16
CPCC08F283/01C09D151/08C09D5/1662C08F220/14
Inventor 杨宏军蒋必彪黄文艳薛小强江力蒋其民
Owner CHANGZHOU UNIV
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