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Super-hydrophobic coating as well as preparation method and application thereof

A technology of a super-hydrophobic coating and an application method, applied in the application of the above-mentioned super-hydrophobic coating, and the preparation field of the above-mentioned super-hydrophobic coating, can solve the problems of easy pollution, acid resistance, mildew resistance, etc., and achieve low environmental pollution, low toxicity, and method simple effect

Inactive Publication Date: 2019-04-09
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Superhydrophobic surface has excellent properties such as self-cleaning, anti-icing, anti-corrosion, and drag reduction. It has been widely used in daily life in recent years. As one of the important materials in the textile industry, cotton fabric is prone to mildew and worm Disadvantages such as pollution, easy pollution, and acid resistance; the fibers on the surface of cotton fabrics interweave to form a mesh porous structure, and there are multi-level micro-nano-scale rough structures on the microscopic surface. In order to improve the hydrophobicity of cotton fabrics, fluorocarbons are usually used Various methods such as silicate combination or organosilicon compound reduce the surface energy of the fiber, but the pollution to the environment is high

Method used

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  • Super-hydrophobic coating as well as preparation method and application thereof
  • Super-hydrophobic coating as well as preparation method and application thereof
  • Super-hydrophobic coating as well as preparation method and application thereof

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preparation example Construction

[0034] A kind of preparation method of superhydrophobic coating of the present invention, specifically implement according to the following steps:

[0035] Step 1. Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) through an alumina chromatography column to remove the polymerization inhibitor.

[0036] Step 2. According to the molar ratio of 4~8:1:1~2:0.05~0.11:0.06~0.12, respectively weigh dodecafluoroheptyl methacrylate (DFMA) and glycidyl methacrylate treated in step 1 (GMA) hydroxyethyl methacrylate, and azobisisobutyronitrile and sodium bisulfite;

[0037] Among them, dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA), and hydroxyethyl methacrylate (HEMA) are used as raw materials, and azobisisobutyronitrile and sodium bisulfite are used as initiators.

[0038] Step 3. Add dodecafluoroheptyl methacrylate, hydroxyethyl methacrylate, azobisisobutyronitrile and sodium bisulfite to the container, then add tetrahydrofuran to the con...

Embodiment 1

[0046] Preparation method of superhydrophobic coating:

[0047] Take glycidyl methacrylate (GMA), and filter glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh the methyl Dodecafluoroheptyl acrylate (DFMA), treated glycidyl methacrylate (GMA), hydroxyethyl methacrylate (HEMA) and azobisisobutyronitrile and sodium bisulfite; Fluoroheptyl ester, hydroxyethyl methacrylate, and azobisisobutyronitrile and sodium bisulfite were added to a round bottom flask, and tetrahydrofuran and trifluorotoluene were added to the vessel, the round bottom flask was sealed and purged with nitrogen After 45 minutes, the oxygen in the round-bottomed flask was discharged; the whole round-bottomed flask was heated in an oil bath constant temperature pot with a temperature of 65°C, and magnetic stirring was started for 35 minutes under the protection of nitrogen, so that the dodecafluoromethacrylate in the container Heptyl ester, hydroxyethyl...

Embodiment 2

[0052] Preparation method of superhydrophobic coating:

[0053] Take glycidyl methacrylate (GMA), and filter glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh methyl Dodecafluoroheptyl acrylate (DFMA), treated glycidyl methacrylate (GMA), hydroxyethyl methacrylate (HEMA) and azobisisobutyronitrile and sodium bisulfite; Fluoroheptyl ester, hydroxyethyl methacrylate, and azobisisobutyronitrile and sodium bisulfite were added to a round bottom flask, and tetrahydrofuran and trifluorotoluene were added to the vessel, the round bottom flask was sealed and purged with nitrogen After 45 minutes, the oxygen in the round-bottomed flask was discharged; the whole round-bottomed flask was heated in an oil bath constant temperature pot with a temperature of 65°C, and magnetic stirring was started for 35 minutes under the protection of nitrogen, so that the dodecafluoromethacrylate in the container Heptyl ester, hydroxyethyl met...

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Abstract

The invention discloses a super-hydrophobic coating which is characterized by being a polymer which is prepared from dodecafluoroheptyl methacrylate, glycidyl methacrylate, hydroxyethyl methylacrylate, azodiisobutyronitrile and sodium hydrogen sulfite through reactions, and the polymer is PGMA-b-P(HEMA-r-DFMA). The invention further discloses a preparation method and an application method of the super-hydrophobic coating. The super-hydrophobic coating disclosed by the invention is small in environmental pollution and good in super-hydrophobic property, and the super-hydrophobic coating disclosed by the invention is simple in preparation method, very convenient in application method and good in repeated use performance.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic coatings, and relates to a hydrophobic coating. The invention also relates to a preparation method of the super-hydrophobic coating, and an application method of the super-hydrophobic coating. Background technique [0002] The wettability of a solid surface can be characterized by the contact angle. When the contact angle (WCA) between a water droplet and the surface is greater than 150°, it is called a superhydrophobic surface. Inspired by the lotus leaf effect, the preparation of a superhydrophobic surface mainly includes Two approaches: one is to construct suitable roughness on the surface of hydrophobic materials with low surface energy; the other is to modify low surface energy substances on the surface with a certain roughness. [0003] Superhydrophobic surface has excellent properties such as self-cleaning, anti-icing, anti-corrosion, and drag reduction. It has been widely used in daily...

Claims

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Application Information

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IPC IPC(8): D06M15/277C08F220/24C08F220/32C08F220/20
CPCC08F220/24D06M15/273D06M15/277D06M2200/12C08F220/325C08F220/20
Inventor 曹从军马雅玲侯成敏
Owner XIAN UNIV OF TECH
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