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Autocrine low-surface-energy flow-resistance-reducing paint

A low surface energy, coating technology, applied in the direction of coating, etc., can solve the problems of easy attenuation of low surface energy properties, loss of drag reduction effect, etc., and achieve low surface energy, excellent low surface energy properties, and excellent self-secretion regulation Effect

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

[0004] In the long-term use of the low surface energy coatings currently developed, due to the effects of friction and wear, water erosion, sunlight irradiation, etc., the low surface energy properties are easily attenuated, and the drag reduction effect is lost.

Method used

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  • Autocrine low-surface-energy flow-resistance-reducing paint
  • Autocrine low-surface-energy flow-resistance-reducing paint
  • Autocrine low-surface-energy flow-resistance-reducing paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: 60 parts of film-forming resin (normal temperature cross-linking type fluorocarbon resin) in proportion, 0.3 part of defoamer (Defom8700), 0.5 part of leveling agent (Levelol 495), solvent (by butyl acetate and xylene 10 parts of mixed solvents mixed with a volume ratio of 7:3), mixed uniformly to make fluorocarbon varnish; 20 parts of the above-mentioned fluorosilicon polymer microcapsules and 10 parts of toluene diisocyanate TDI curing agent were added to 70 parts of fluorocarbon varnish, mixed Stir evenly to obtain the self-secreting low surface energy flow-resistance coating.

[0040] The self-secreting low surface energy flow resistance reducing coating is coated on the steel substrate coated with anti-corrosion coating to make a sample, and after being fully dried at room temperature, the coating performance is tested. Within 12 months, the contact angle between the coating and water remained at 118°, and the flow resistance reduction effect remained at...

Embodiment 2

[0042] In proportion, 80 parts of film-forming resin (normal temperature cross-linking fluorocarbon resin), 0.8 parts of defoamer (Defom 8700), 1 part of leveling agent (Levelol 495), solvent (by butyl acetate and xylene in a ratio of 7: 3 volume ratio of mixed solvent) 40 parts, mix evenly to make fluorocarbon varnish. Add 40 parts of the above-mentioned fluorosilicon polymer microcapsules and 15 parts of curing agent (toluene diisocyanate TDI) to 90 parts of fluorocarbon varnish, mix and stir evenly to obtain the self-secreting low surface energy flow resistance reducing coating.

[0043] The self-secreting low surface energy flow resistance reducing coating is coated on the steel substrate coated with anti-corrosion coating to make a sample, and after being fully dried at room temperature, the coating performance is tested. Within 12 months, the contact angle between the coating and water remained at 120°, and the flow resistance reduction effect remained at 15%.

Embodiment 3

[0045] In proportion, 70 parts of film-forming resin (normal temperature cross-linking fluorocarbon resin), 0.5 part of defoamer (Defom 8700), 0.8 part of leveling agent (Levelol 495), solvent (by butyl acetate and xylene at 7: 3 volume ratio of mixed solvent) 30 parts, mixed evenly to make fluorocarbon varnish. Add 30 parts of the above-mentioned fluorosilicon polymer microcapsules and 12 parts of curing agent (toluene diisocyanate TDI) to 80 parts of fluorocarbon varnish, mix and stir evenly to obtain self-secreting low surface energy flow resistance reducing coating.

[0046] The self-secreting low surface energy flow resistance reducing coating is coated on the steel substrate coated with anti-corrosion coating to make a sample, and after being fully dried at room temperature, the coating performance is tested. Within 12 months, the contact angle between the coating and water remained at 119°, and the flow resistance reduction effect remained at 15%.

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Abstract

The invention relates to an autocrine low-surface-energy flow-resistance-reducing paint, belonging to the field of low-surface-energy paint. The autocrine low-surface-energy flow-resistance-reducing paint is prepared from the following components in parts by mass: 70-90 parts of fluorocarbon varnish, 20-40 parts of fluorosilicon polymer microcapsule and 10-15 parts of curing agent. The coating wall material of the fluorosilicon polymer microcapsule is urea-formaldehyde resin, and the core material fluorosilicon polymer is disclosed as the formula in the specification; the fluorosilicon polymer microcapsule is prepared from a water dispersion liquid of fluorosilicon polymer and urea-formaldehyde resin prepolymer; the microcapsule is in a shell-core structure; and the urea-formaldehyde resin wall material has favorable compatibility with the paint, and the core material is the fluorosilicon polymer with ultralow-surface-energy. The film formed by the paint has excellent autocrine regulation performance; in the course of use, when the film is pressed, abraded or eroded by water flows, the wall material of the microcapsule is broken, and the core material fluorosilicon polymer is released and spills to the surface of the coating to as to form an emergency supplementary low-surface-energy coating, so that the coating has perfect property of low surface energy.

Description

technical field [0001] The invention relates to a self-secretion low surface energy flow resistance reducing coating, which belongs to the field of low surface energy coatings, in particular to a flow resistance reducing coating product. Background technique [0002] The fluid resistance formed by the speed and pressure pulsation during the ship's navigation, as well as the frictional resistance caused by the interaction between the fluid in the oil and gas transported by the pipeline and the inner wall of the pipeline, seriously affect the ship's sailing speed and the oil and gas transmission efficiency, making the ship's navigation and pipeline transportation Oil and gas consume a lot of energy. In today's construction of a "saving society", reducing fluid resistance and reducing energy consumption has become a hot research topic all over the world. [0003] Among many surface flow resistance reduction measures, the hydrophobicity of the low surface energy coating prevent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D7/12C08J3/00C08L83/08C08L61/24
Inventor 刘秀生汪洋崔盼刘兰轩苗毅张迎平
Owner WUHAN RES INST OF MATERIALS PROTECTION
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