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Water-based fluoropolymer and silicon dioxide hybrid material and transparent super-amphiphobic coating prepared from same

A technology of silica and hybrid materials, applied in coating and other directions, can solve the problems of not very transparent super-amphiphobic materials, affecting the application of super-amphiphobic materials, easy agglomeration of silica, etc. The synthesis method is simple and the construction industry is environmentally friendly

Active Publication Date: 2013-11-27
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering the demand for the industrialization of superamphiphobic materials in the application field, there are still some problems in this technical field that have not been resolved, such as (1) high transparency: some special fields, such as glass, transparent films, electronic plastic packaging materials, etc., due to At present, when constructing super-amphiphobic materials on smooth surfaces, it needs to be hybridized with silica, and silica is easy to agglomerate, so that the super-amphiphobic materials constructed by it are not very transparent, or even basically opaque, which affects the super-amphiphobic materials. The application of materials in these fields; (2) the water-based problem. Although there are reports on the preparation of high-transparency super-hydrophobic or super-amphiphobic materials, these high-transparency super-amphiphobic materials need to be produced in organic solvents. constructed

Method used

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  • Water-based fluoropolymer and silicon dioxide hybrid material and transparent super-amphiphobic coating prepared from same
  • Water-based fluoropolymer and silicon dioxide hybrid material and transparent super-amphiphobic coating prepared from same
  • Water-based fluoropolymer and silicon dioxide hybrid material and transparent super-amphiphobic coating prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Synthesize the cross-linkable water-dispersible fluoropolymer grafted on the surface by free radical polymerization. The specific synthesis process is: graft 0.1g of silica with double bonds on the surface (refer to the synthesis method: Research on Surface Modification of Nano-Silicon Dioxide by Silane Coupling Agent KH-570, Nanotechnology. Issue 3, 2009, Liu Qi, Cui Haixin, Gu Wei, Lin Chunmei, Li Ying), 1.2g monomer trimethacrylate Fluoroethyl ester, 0.8 glycidyl methacrylate, 1.01 polyethylene glycol methyl methacrylate, 0.0012g initiator (azobisisobutyronitrile AIBN) were added to 20mL toluene, after oxygen removal, the temperature was raised to After reacting for 24 hours at 80 degrees Celsius, the sample was taken out, centrifuged again, washed with ethanol for 3 times and then dried to finally obtain a water-based fluoropolymer and silicon dioxide hybrid material. Its structural formula is as follows:

[0043]

[0044] (2) Construction of transparent sup...

Embodiment 2

[0046] (1) Synthesize the cross-linkable water-dispersible fluoropolymer grafted on the surface by free radical polymerization. The specific synthesis process is: graft 0.25g of silica with double bonds on the surface (refer to the synthesis method: Research on Surface Modification of Nano-SiO2 by Silane Coupling Agent KH-570, Nanotechnology. Issue 3, 2009, Liu Qi, Cui Haixin, Gu Wei, Lin Chunmei, Li Ying), 5.2g perfluorooctylethyl Methacrylate, 2.01g propenyl glycidyl ether, 5.8g polyethylene glycol methyl methacrylate, 0.0032g initiator (azobisisobutyronitrile AIBN) were added to 50mL trifluorotoluene, after deoxygenation, After raising the temperature to 85 degrees Celsius and reacting for 20 hours, the sample was taken out, centrifuged again, washed with ethanol for 3 times, and then dried to finally obtain a water-based fluoropolymer and silica hybrid material. Its structural formula is as follows:

[0047]

[0048] (2) Construction of transparent super-amphiphobic co...

Embodiment 3

[0050] (1) Synthesize the cross-linkable water-dispersible fluoropolymer grafted on the surface by free radical polymerization. The specific synthesis process is: graft 0.25g of silica with double bonds on the surface (refer to the synthesis method: Research on Surface Modification of Nano-SiO2 by Silane Coupling Agent KH-570, Nanotechnology. Issue 3, 2009, Liu Qi, Cui Haixin, Gu Wei, Lin Chunmei, Li Ying), 3.2g perfluorooctylethyl Acrylates, 2.22 g 1,2-epoxy-5-hexene, 2.8 g polyethylene glycol methacrylate (n=6), 0.0032 g initiator (benzoyl peroxide BPO) were added to 50 mL trifluoro In toluene, after deoxygenation, the temperature was raised to 85 degrees Celsius, and after 18 hours of reaction, the sample was taken out, centrifuged, washed with ethanol three times, and then dried to finally obtain a water-based fluoropolymer and silica hybrid material. Its structural formula is as follows:

[0051]

[0052] (2) Construction of transparent super-amphiphobic coating: Diss...

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Abstract

The invention belongs to the field of super-amphiphobic materials and discloses a water-based fluoropolymer and silicon dioxide hybrid material and a transparent super-amphiphobic coating prepared from the same. The water-based fluoropolymer and silicon dioxide hybrid material is a hybrid material with the structural formula of P(A-r-B-r-C)-g-D; the hybrid material is prepared by polymerization reaction of water-soluble monomers A, monomers B, fluorine-containing monomers C and inorganic nano particles D at the mass ratio of 1:(0.2-20):(0.1-20):(0.1-5), wherein the end groups of the monomers B are epoxide groups, and double bonds are grafted on the surfaces of the inorganic nano particles D. The super-amphiphobic material provided by the invention can perform cross-linking reaction with the surface of a substrate in water; compared with the construction methods of traditional super-amphiphobic materials, a method provided by the invention is cheaper and more environment-friendly; besides, a super-amphiphobic interface prepared by the method has excellent super-hydrophobic and super-oleophobic properties and can meet the requirement in industrial application.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic materials, in particular to a water-based fluorine-containing polymer and silicon dioxide hybrid material and a transparent super-amphiphobic coating prepared therefrom. Background technique [0002] The most important characterization parameter of surface wetting behavior is the contact angle. If the static contact angle of the surface is less than 10°, we call it a superhydrophilic surface. If the surface has a contact angle of more than 150° for water, we call it a superhydrophobic surface. surface. Similarly, if the surface has a contact angle of greater than 150° for oil, it is called a superoleophobic surface. The superamphiphobic interface has superhydrophobic and superoleophobic properties, which can endow various surfaces with anti-corrosion properties, and can be widely used in textiles, leather, packaging materials, kitchen and bathroom utensils, oil pipelines, metal processing, buildi...

Claims

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Application Information

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IPC IPC(8): C08F292/00C09D151/10
Inventor 胡继文邹海良林树东涂圆圆李妃张干伟刘国军苗磊胡美龙
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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