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Fluorinated polyurethane nanometer composite material and preparation method thereof

A nano-composite material, fluorinated polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem of reducing the service life of metal fillers in hypergravity reactors, heat transfer, mass transfer efficiency, deterioration of corrosion conditions, etc. Material viscosity and other problems, to achieve good hydrophobicity and oleophobicity, enhanced corrosion resistance, and improved service life.

Inactive Publication Date: 2009-11-25
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing fluorine-containing polyurethane has excellent hydrophobic and oleophobic effects, it can partially alleviate the material stickiness of the supergravity reactor material on the packing surface, but it cannot solve the problem of the high-speed impact contact between the metal packing surface and the material in the supergravity reactor. thermal corrosion and wear problems
Thermal deformation and impact corrosion on the surface of metal fillers cause surface roughness, which is more likely to cause material sticking, which in turn worsens the corrosion condition
Greatly reduces the service life of the metal packing of the supergravity reactor and the heat transfer and mass transfer efficiency of the gravity reactor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Add 1.4 mol of polypropylene glycol (PPG400) and 1.5 mol of 2-perfluorooctyl ethanol to a 1-liter glass beaker, place on a constant temperature heating magnetic stirrer to mix the contents, keep the temperature at 65°C, mix for 1 hour, and mix the obtained The liquid is put into the reaction kettle under the protection of nitrogen, add hexamethylene-1,6-diisocyanate (HDI) 3.0mol, ethyl acetate 2000ml, mix and stir for 2 hours, when the temperature rises to about 100°C, add polytetrahydrofuran homopolymerization Ether diol (PTMG2000) 2.4mol, stannous octoate 0.5ml, stir rapidly for 30 minutes, cool down to 70°C, mix and stir for 1 hour, lower the temperature to 40°C, add 2% nano The ethanol dispersion of aluminum oxide and the ethanol dispersion of nano-silicon carbide with a mass content of 10% and an average particle diameter of 40 nm were stirred and dispersed for 60 minutes, cooled to room temperature, and discharged.

[0037] Apply the above materials to A after conv...

Embodiment 2

[0049] Add 200 grams of polypropylene glycol (PPG400) and 464 grams of 2-perfluorooctyl ethanol to a 1-liter glass beaker, place on a constant temperature heating magnetic stirrer to mix the contents, keep the temperature at 65 ° C, mix for 1 hour, and mix the obtained The solution was put into the reaction kettle under nitrogen protection, 444 grams of isophorone diisocyanate (IPDI) and 2000 ml of ethyl acetate were added, mixed and stirred for 2 hours, and polytetrahydrofuran homopolyether glycol (PTMG2000 ) 2000 grams, stannous octoate 0.5ml, stirred rapidly for 30 minutes, cooled to 70°C, mixed and stirred for 1 hour, lowered the temperature to 40°C, added mass content of 4% average particle diameter of 30nm nano-alumina ethanol dispersion liquid, 12% by mass content of nano-silicon carbide ethanol dispersion with an average particle size of 40 nm, stirred rapidly for 60 minutes, cooled to room temperature, and discharged.

[0050] Apply the above materials to A after conv...

Embodiment 3

[0062] Add 950 grams of polyethylene glycol (PEG1000) and 444 grams of isophorone diisocyanate (IPDI) into a 1-liter glass beaker, place on a constant temperature heating magnetic stirrer to mix the contents, keep the temperature at 95°C, and mix for 1 hour , lower the temperature to 60°C, put the resulting mixture into the reaction kettle under the protection of nitrogen, add 92.8 grams of 2-perfluorooctyl ethanol, 0.5 ml of stannous octoate, mix and stir for 2 hours, and add poly Tetrahydrofuran homopolyether glycol (PTMG2000) 4000 grams, ethyl acetate 2000ml, stir rapidly for 30 minutes, cool down to 70°C, mix and stir for 1 hour, reduce the temperature to 40°C, add 5% mass content of the average particle size is 30nm The ethanol dispersion of nano-alumina and the ethanol dispersion of nano-silicon carbide with a mass content of 15% and an average particle diameter of 40 nm were stirred and dispersed for 60 minutes, cooled to room temperature, and discharged.

[0063] Apply...

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PUM

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Abstract

The invention relates to fluorinated polyurethane nanometer composite material and a preparation method thereof. The invention combines a polycondensation co-polymerization process and fluorine-introducing ultrasonic dispersion technology in the preparation process, nanometer aluminum oxide and nanometer silicon carbide are added and compounded in homogeneous phase in the polycondensation and the co-polymerization process, thereby obtaining nanometer particle reinforced fluorinated polyurethane nanometer composite material. A coating material with micron / nanometer dual structure surface and having hydro-oleophobic, wear resistant and erosion resistant functions, is obtained after film forming by spray coating on the base, drying and curing. The coating material prepared by the method has Hydro-oleophobic performance, and satisfies heat resisting, anticorrosion and wear resistant characteristics under hypergravity or high speed impact conditions.

Description

technical field [0001] The invention relates to a fluorinated polyurethane hydrophobic, oleophobic and abrasion-resistant coating composite material reinforced by inorganic nanoparticles and its preparation technology. In particular, the coating material prepared by the method has both hydrophobic and oleophobic properties, and has the ability to meet the requirements of ultra-thin coatings. Heat resistance, corrosion resistance, wear resistance and other properties under the conditions of gravity or high-speed impact, especially suitable for the surface treatment of metal packing in supergravity reactors and mechanical, petroleum, and chemical pipeline systems that are resistant to impact, wear, and corrosion. technical background [0002] Since the British Imperial Chemical Industries (ICI) successfully developed the high-intensity gas-liquid mass transfer equipment Higee (High-Gravity-Rotary Device) in 1983, the research and development of high-gravity technology has attra...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/38C08G18/08C08K3/22C08K3/34C09D175/08C09D5/00
Inventor 何莉萍傅长征
Owner HUNAN UNIV
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