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Room-temperature solidified super-oleophobic polyurethane coating

A polyurethane coating, room temperature curing technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of uneconomical, large energy consumption, and environmental protection, and achieve the effect of simple and easy method and simple preparation process

Active Publication Date: 2013-10-02
甘肃捷鼎新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods have high requirements on the substrate itself, and the super-amphiphobic surface can only be prepared on a specific substrate (such as specific metal aluminum, titanium, etc.), and some of them also require relatively harsh conditions such as high temperature and high pressure, which will consume a lot of energy. energy, which makes the material manufacturing cost high, which is neither environmentally friendly nor economical. Moreover, most of these super-oleophobic surfaces require two or more steps to achieve super-oleophobic performance, and their operability is not good.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Carbon nanotube perfluoroalkylation treatment, the treatment steps are: 1) immerse 3g carbon nanotubes with a diameter of 40-60nm in 100mL of sulfuric acid / nitric acid solution with a volume ratio of 3 / 1, and stir at room temperature for 24 hours for acidification After treatment, the treated carbon nanotubes are washed with water to neutrality after suction filtration; (2) 1 g of acidified carbon nanotubes are placed in 50 mL of SOCl 2 The medium was heated under reflux for 24 hours to carry out acylation treatment, and after suction filtration, the excess was washed with anhydrous tetrahydrofuran, and then vacuum-dried for 3 hours; (3) 0.5 g of acylated carbon nanotubes were placed in 20 g of perfluorooctyl methanol solution , stirring and heating for 24 hours to carry out an esterification reaction, and the obtained carbon nanotubes are washed with methylhydrofuran to remove unreacted perfluorooctyl methanol and then dried to obtain perfluoroalkylated carbon nanotubes...

Embodiment 2

[0027] Carbon nanotube perfluoroalkylation treatment, the treatment steps are: 1) immerse 3g carbon nanotubes with a diameter of 20-40nm in 100mL of sulfuric acid / nitric acid solution with a volume ratio of 3 / 1, and stir at room temperature for 24 hours for acidification After treatment, the treated carbon nanotubes are washed with water to neutrality after suction filtration; (2) 1 g of acidified carbon nanotubes are placed in 50 mL of SOCl 2 The medium was heated under reflux for 24 hours to carry out acylation treatment, and after suction filtration, the excess was washed with anhydrous tetrahydrofuran, and then vacuum-dried for 3 hours; (3) 0.5 g of acylated carbon nanotubes were placed in 20 g of perfluorooctyl methanol solution , stirring and heating for 24 hours to carry out the esterification reaction, the obtained carbon nanotubes are washed with tetrahydrofuran to remove unreacted perfluorooctyl methanol, and then dried to obtain perfluoroalkylated carbon nanotubes fo...

Embodiment 3

[0031] Carbon nanotube perfluoroalkylation treatment, the treatment steps are: 1) immerse 3g carbon nanotubes with a diameter of 40-60nm in 100mL of sulfuric acid / nitric acid solution with a volume ratio of 3 / 1, and stir at room temperature for 24 hours for acidification After treatment, the treated carbon nanotubes are washed with water to neutrality after suction filtration; (2) 1 g of acidified carbon nanotubes are placed in 50 mL of SOCl 2 The medium was heated under reflux for 24 hours to carry out acylation treatment, and after suction filtration, the excess was washed with anhydrous tetrahydrofuran, and then vacuum-dried for 3 hours; (3) 0.5 g of acylated carbon nanotubes were placed in 20 g of perfluorooctyl methanol solution , stirring and heating for 24 hours to carry out an esterification reaction, and the obtained carbon nanotubes are washed with tetrahydrofuran to remove unreacted perfluorooctyl methanol and then dried to obtain perfluorodecylated carbon nanotubes ...

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Abstract

The invention discloses a room-temperature solidified super-oleophobic polyurethane coating. The coating consists of the following components in parts by weight: 10 to 40 parts of polyurethane prepolymer, 1 to 15 parts of perfluoroalkyl carbon nano-tube, 3 to 20 parts of polyethylene glycol, 5 to 10 parts of perfluoroalkyl methanol, and 40 to 70 parts of organic solvent. The coating can be implemented on various substrates by virtue of oil-water non-sticking performance, can be used as liquid delivery pipeline materials, surfaces of various ships or submarines and surfaces of various facilities.

Description

technical field [0001] The invention relates to a room temperature curing superoleophobic polyurethane coating. Background technique [0002] Wetability is an important feature of solid surfaces, and surfaces with superoleophobicity have extremely broad application value in industrial and agricultural production and daily life. For example, it can be used to prevent pollution, oil, and oxidation. Therefore, in recent years, the research on the construction of superoleophobic solid surfaces has attracted extensive attention of researchers and made certain progress. [0003] At present, the method for preparing superoleophobic surfaces is mainly to construct a solid surface with special rough structure first, and then modify the solid surface with low surface energy substances such as fluorine compounds. For example, the Chinese invention patent (application number: 01110291.8) has prepared some nanotube films at high temperature, which have super oleophobicity after being mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 王晓龙于波胡海媛周峰刘维民
Owner 甘肃捷鼎新材科技有限公司
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