Low-surface energy fluorosilicone polymer and preparation method thereof

A fluorosilicon polymer, low surface energy technology, applied in the field of low surface energy fluorosilicon polymer and its preparation, marine antifouling coating of fluorosilicon polymer, can solve the problem of low surface energy of silicone and fluorocarbon, no comparison Problems such as mature products, low surface energy of coatings, etc., to achieve the effects of mild reaction conditions, high yield and short process

Inactive Publication Date: 2011-07-27
WUHAN RES INST OF MATERIALS PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] High fluoroalkyl branched fluorosilicon polymers give full play to the low surface energy properties of silicone and fluorocarbon, and have lower surface energy.

Method used

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  • Low-surface energy fluorosilicone polymer and preparation method thereof
  • Low-surface energy fluorosilicone polymer and preparation method thereof
  • Low-surface energy fluorosilicone polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Perfluoroalkyl monomers use: perfluorooctylethylene

[0027] (1) Weigh 60 parts of hydrogen-containing silicone oil after drying, 10 parts of perfluorooctylethylene (Z=8 in its general formula), 30 parts of xylene and 0.001 part of chloroplatinic acid.

[0028] (2) Add the weighing object into the pre-dried reaction kettle, and stir evenly.

[0029] (3) After the solution is mixed evenly, nitrogen gas is introduced for 15 minutes and then heated to 90°C for 28 hours.

[0030] (4) After the reaction finishes, the catalyst is recovered, and the product obtained through extraction, vacuum distillation and rectification is to satisfy the high fluoroalkyl branched-chain fluorosilicon polymer of the present invention with the following structural formula:

[0031]

Embodiment 2

[0032] Example 2: Perfluoroalkyl monomers are used: perfluorohexyl ethyl acrylate and perfluorooctylethylene

[0033] (1) Weigh 80 parts of hydrogen-containing silicone oil after drying, 16 parts of perfluorohexyl ethyl acrylate (X=6 in the general formula), 8 parts of perfluorooctylethylene (Z=8 in the general formula), xylene 50 parts and 0.005 parts of chloroplatinic acid.

[0034] (2) Add the weighing object into the pre-dried reaction kettle, and stir evenly.

[0035] (3) After the solution is mixed evenly, nitrogen gas is introduced for 15 minutes and then heated to 110°C for 20 hours.

[0036] (4) After the reaction finishes, the catalyst is recovered, and the product obtained through extraction, vacuum distillation and rectification is to satisfy the high fluoroalkyl branched-chain fluorosilicon polymer mixture of the present invention with the following structural formula:

[0037]

Embodiment 3

[0038] Example 3: The use of perfluoroalkyl monomers: perfluorodecyl ethyl acrylate and perfluorohexyl ethyl methacrylate

[0039] (1) Weigh 75 parts of hydrogen-containing silicone oil after drying, 12 parts of perfluorodecyl ethyl acrylate (X=10 in the general formula), and 12 parts of perfluorohexyl ethyl methacrylate (Y=6 in the general formula) 6 parts, 40 parts of xylene and 0.003 parts of chloroplatinic acid.

[0040] (2) Add the weighing object into the pre-dried reaction kettle, and stir evenly.

[0041] (3) After the solution is uniformly mixed, nitrogen gas is introduced for 15 minutes and then heated to 120°C for 16 hours.

[0042] (4) After the reaction finishes, the catalyst is recovered, and the product obtained through extraction, vacuum distillation and rectification is to satisfy the high fluoroalkyl branched-chain fluorosilicon polymer mixture of the present invention with the following structural formula:

[0043]

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Abstract

The invention discloses a low-surface energy fluorosilicone polymer and a preparation method thereof and relates to the field of organofluorine polymer paint. In the invention, an organosilicon polymer, perfluoroacyl monomers, a catalyst and a solvent are used as raw materials and are mixed in turn according to a mass part ratio of (60-80):(10-24):(0.0001-0.005):(30-50), the reaction product is purified, and thus, a high-fluoroacyl branched fluorosilicone polymer, which is one of the three perfluoroacyl monomers, or a high-fluoroacyl branched fluorosilicone polymer mixture of two or three of the three perfluoroacyl monomers. In the invention, because a catalytic reaction is performed by using a coordination compound of a transitional metal, the reaction conditions are mild, the process flow is short, the process is simple, the selectivity is high and the yield is high; the prepared polymer is a high-fluoroacyl branched fluorosilicone polymer; and the main chain of the polymer has a silicon-oxygen linear chain structure and has no other carbon-oxygen structure and the side chain is a perfluoroacyl with high fluorine content, so the low surface energy performance of organosilicon and fluorocarbon polymers can be fully played, and excellent low surface energy property can be realized.

Description

technical field [0001] The invention relates to a low surface energy fluorosilicon polymer and a preparation method thereof, which relate to the field of organic fluoropolymer coatings, in particular to marine antifouling coatings of fluorosilicon polymers. Background technique [0002] Fluorosilicone polymers have excellent chemical stability, heat resistance, electrical insulation, atmospheric aging resistance and other characteristics, and play an extremely important role in modern industry. In terms of coatings, organic fluorine coatings formulated with fluorosilicon polymers have excellent mechanical properties, weather resistance, stain resistance, and chemical resistance. Fluorine-containing silicon architectural coatings, fluorine-containing silicon anti-corrosion Dirty coatings, fluorine-containing silicon aviation coatings, etc. are gradually being accepted by people, and have caused the expansion of the coatings market and the expansion of application fields. [...

Claims

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Application Information

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IPC IPC(8): C08G77/385C08G77/32C09D183/08C09D5/16
Inventor 刘秀生崔盼汪洋刘兰轩张迎平苗毅
Owner WUHAN RES INST OF MATERIALS PROTECTION
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