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Preparing method for graphene oxide super-hydrophobic coating and coating evaporation device

A super-hydrophobic coating, graphene technology, applied in coating, vacuum evaporation coating, metal material coating process and other directions, can solve the problems of difficult to achieve large-scale industrial production, short service life, easy to peel, etc. It is convenient for large-scale industrial production, low cost, and not easy to peel off.

Inactive Publication Date: 2017-05-31
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the prior art, the purpose of the present invention is to overcome the deficiencies in the prior art, to provide a preparation method of graphene oxide superhydrophobic coating and a coating evaporation device, aiming at the superhydrophobic coating of graphene oxide in the prior art The coating is easy to peel off, the service life is not long, and it is difficult to realize large-scale industrial production. The present invention uses the evaporation method to first evaporate graphene oxide on the metal substrate, and then evaporate the surface of the prepared coating. Hydrophobic modification, when graphene oxide is vapor-deposited on the metal surface, due to the reduction of the metal, it reacts with graphene oxide and combines with chemical bonds, which effectively improves the bonding force between the coating and the substrate, and the coating is not easy peeling off, and the method is simple and economical, and is convenient for large-scale industrial production

Method used

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  • Preparing method for graphene oxide super-hydrophobic coating and coating evaporation device
  • Preparing method for graphene oxide super-hydrophobic coating and coating evaporation device
  • Preparing method for graphene oxide super-hydrophobic coating and coating evaporation device

Examples

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Effect test

Embodiment 1

[0030] In this example, see figure 1 and figure 2 , an evaporation device for self-assembled superhydrophobic graphene oxide coating, including two parts of an upper drum type device and a lower evaporation device, the upper drum type device mainly includes a drum 4 arranged inside the upper cover 9, and two parts of the drum 4 The ends are fixedly connected to the rotating shaft 3 to form a rotating body. The rotating shaft 3 is set in the shaft hole on the upper cover 9 through the rotary joint 2. The outer surface of the drum 4 is used to coat and fix the vapor-deposited metal aluminum foil. The upper cover 9 is formed inside. In the drum chamber of the drum 4, the rotating shaft 3 is driven by the motor 7 combined with the rotating speed and the power control module 8, so that the rotating shaft 3 drives the drum 4 to rotate, thereby making the rotating speed of the drum 4 controllable, providing a stable rotating speed, and through temperature control The device makes t...

Embodiment 2

[0044] This embodiment is basically the same as Embodiment 1, especially in that:

[0045] In the present embodiment, a method for preparing a graphene oxide superhydrophobic coating is carried out using an evaporation device for a self-assembled superhydrophobic graphene oxide coating, including the following steps:

[0046] a. Inner coating preparation process: this step is the same as in Example 1;

[0047] b. Outer coating preparation process:

[0048] Using the non-vacuum evaporation method, at 100°C, using an alcohol solution of tridecafluorooctyltriethoxysilane with a mass percent concentration of 1wt%, for 3 hours, the low surface energy organic compound tridecafluorooctyltriethoxysilane Ethoxysilane is vapor-deposited on the inner coating prepared in step a to form an outer coating. After the process of preparing the outer coating by evaporation is completed, the coating is dried in an oven at 140°C for 3 hours to evaporate excess The unreacted organic solution comp...

Embodiment 3

[0050] This embodiment is the same as the previous embodiment, and the special features are:

[0051] In the present embodiment, a method for preparing a graphene oxide superhydrophobic coating is carried out using an evaporation device for a self-assembled superhydrophobic graphene oxide coating, including the following steps:

[0052] a. Inner coating preparation process: this step is the same as in Example 1;

[0053] b. Outer coating preparation process:

[0054] Using a non-vacuum evaporation method, at 150°C, using an alcohol solution of tridecafluorooctyltriethoxysilane with a mass percent concentration of 1wt%, evaporation for 0.5h, the low surface energy organic substance tridecafluorooctyl Triethoxysilane is vapor-deposited on the inner coating prepared in step a to form an outer coating. After the process of preparing the outer coating by evaporation is completed, the coating is dried in an oven at 160°C for 1 hour to evaporate The redundant unreacted organic solu...

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Abstract

The invention discloses a preparing method for a graphene oxide super-hydrophobic coating. The method comprises the steps that an evaporation method is utilized for evaporation of a graphene oxide solution to a metal base, and an inner coating is formed, wherein according to the evaporation conditions of the inner coating, the evaporation temperature ranges from 35 DEG C to 95 DEG C, and the non-vacuum evaporation time ranges from 0.5 h to 3 h; and organic matter with the low surface energy is subjected to evaporation to the inner coating through the evaporation method to become an outer coating, according to the evaporation conditions of the outer coating, the non-vacuum evaporation is conducted for 0.5-3 h at the temperature ranging from 100 DEG C to 150 DEG C, and then drying is conducted for 1-3 h at the temperature ranging from 140 DEG C to 160 DEG C. The invention further discloses a coating evaporation device. The coating evaporation device comprises an upper roller type device and a lower evaporation device. The surface contact angle of the prepared super-hydrophobic graphene oxide coating is 150 degrees or above, the super-hydrophobic graphene oxide coating can effectively restrain adhesion and corrosion of water vapor, oil dirt and the like through special structures between coating bodies, peeling is not likely to happen, the service life is long, large-scale production is convenient to achieve, and the super-hydrophobic graphene oxide coating can be widely applied to the fields of self cleaning, corrosion preventing and the like.

Description

technical field [0001] The present invention relates to a method for preparing a coating and a coating preparation device, in particular to a method for preparing a superhydrophobic coating and an integrated coating preparation device, and in particular to a method for modifying the surface of graphene, which is applied to Nanomaterial coating preparation and graphene surface wetting regulation technology field. Background technique [0002] With the development of the economy, metal materials have become the most important materials in industry and life due to their excellent properties such as high strength, strong plasticity, high hardness, heat resistance and cold resistance. However, due to the active and unstable properties of metal materials, their application in harsh environments is severely limited. The problem can be solved to a certain extent by preparing alloys, electrochemical protection, adding corrosion inhibitors, etc., but compared with these, it is found ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/12C23C14/22
CPCC23C14/0605C23C14/12C23C14/22
Inventor 周忠福俞健舒武晓婉张昊杨清晨
Owner SHANGHAI UNIV
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