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Preparation method and application of super-hydrophobic composite membrane material

A composite membrane, super-hydrophobic technology, applied in the coating and other directions, can solve the problems of rust and corrosion of metal materials, food deterioration and decay, and the surface of the substrate becoming wet, achieving a short process, easy control of operation, and simple and easy preparation method Effect

Inactive Publication Date: 2017-12-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These tiny water droplets cause the surface of the substrate to become wet, which not only affects the transparency of transparent materials, but also causes some secondary problems, such as deterioration and decay of food, rust and corrosion of metal materials
In addition, for areas with lower temperatures, water vapor can be directly condensed to form small ice beads that stick to the surface of the object, thereby affecting the normal performance of the material

Method used

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  • Preparation method and application of super-hydrophobic composite membrane material
  • Preparation method and application of super-hydrophobic composite membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Wet the nickel foam in toluene, and then burn it in the air atmosphere to obtain a carbon-deposited composite film; then immerse it at a concentration of 0.5g L -1 The hexane solution of perfluorooctyltripolysilane was taken out and dried naturally in air to obtain a superhydrophobic composite membrane material.

[0028] figure 1 The medium carbon is uniformly deposited on the surface of nickel foam, forming a fluffy nano-particle morphology.

[0029] figure 2 The scanning electron microscope image showing the super-hydrophobic composite membrane material. It can be seen that the surface morphology and figure 1 Quite different, with a large number of micro-nano structures. It shows that the modification of low surface energy substances is very successful.

Embodiment 2

[0031] Wet the copper grid in benzene, and then burn it in the air atmosphere to obtain a carbon-deposited composite film; then immerse it at a concentration of 0.1g L -1 The hexane solution of perfluorodecyltrichlorosilane was taken out and naturally dried in air to obtain a superhydrophobic composite membrane material.

Embodiment 3

[0033] Wet the stainless steel mesh in hexane, and then burn it in the air atmosphere to obtain a carbon-deposited composite film; then immerse it at a concentration of 50g L -1 The hexane solution of perfluorodecyltrimethoxysilane was taken out and naturally dried in air to obtain a superhydrophobic composite membrane material.

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Abstract

The invention belongs to the technical field of preparation of environment functional materials and provides a preparation method and an application of a super-hydrophobic composite membrane material. The preparation method comprises the following steps: firstly, a layer of carbon material is loaded on the surface of a base membrane with a combustion method; then, low surface energy modification is performed through fluoroalkyl silane, and the super-hydrophobic composite membrane material is prepared. The super-hydrophobic composite membrane material prepared with the method has excellent water resistance, mist resistance, ice resistance, pollution resistance, self-cleaning property and super-hydrophobic property and can be widely used in the self-cleaning field of materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and relates to a preparation method and application of a superhydrophobic composite membrane material. Background technique [0002] The wettability of a solid surface refers to the ability of water to spread on a solid surface, usually measured by the contact angle (CA). Generally, a solid surface with a contact angle of less than 90° is called a hydrophilic surface; a contact angle greater than 90° is called a hydrophobic surface, and when the contact angle exceeds 150°, it is called a superhydrophobic surface. There are many superhydrophobic phenomena in nature, such as the self-cleaning of the surface of lotus leaves, the water-free surface of peaches, the free movement of water striders on the water surface, and so on. These miraculous natural phenomena have led researchers to explore the mysteries of nature, and finally found that this super-hydrop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J5/18
CPCC08J7/04C08J5/18
Inventor 张瑞龙戴江栋谢阿田常忠帅田苏君葛文娜闫永胜周志平
Owner JIANGSU UNIV
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