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Preparation method of shape memory material capable of physically self-repairing superhydrophobic property

A memory material and self-healing technology, applied in the field of materials, can solve the problems of the surface micro-topography of superhydrophobic materials being easily damaged by physical damage, and achieve a simple shape recovery method, controllable parameters, good wear resistance and acid and alkali corrosion resistance. sexual effect

Active Publication Date: 2014-07-30
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that the surface microtopography of superhydrophobic materials is susceptible to physical damage, the present invention provides a method for preparing a shape memory material capable of physically self-repairing superhydrophobic properties. The material prepared by this method can self-repair the material caused by physical damage Disappearance of superhydrophobic properties caused by deformation of microtopography

Method used

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  • Preparation method of shape memory material capable of physically self-repairing superhydrophobic property
  • Preparation method of shape memory material capable of physically self-repairing superhydrophobic property
  • Preparation method of shape memory material capable of physically self-repairing superhydrophobic property

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specific Embodiment approach 1

[0031] Embodiment 1: In this embodiment, superhydrophobic shape memory materials are prepared according to the following steps:

[0032] The first step is the preparation of the hydrogen bubble template.

[0033] Electrodeposition of porous Ni thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode is made of 304 stainless steel (1cm 2 ) is the cathode. The pretreatment of stainless steel in the experiment includes polishing, degreasing, acid etching, water washing, ethanol immersion, acetone cleaning, low temperature blast drying, and sticking tape on the back of the stainless steel. The composition of the plating solution is 0.01-0.5mo1·L -1 NiCl 2 , 0.2-4mo1·L -1 NH 4 C1 and 2wt.% acetic acid, the pH is controlled within the range of 4.0±0.5, and the current density of electrodeposition is 0.1-6.0A·cm -2 , the deposition time is 10-40s. The structure and morphology of the porous Ni film were construct...

specific Embodiment approach 2

[0043] Embodiment 2: In this embodiment, a superhydrophobic shape memory material is prepared according to the following steps, and the shape is restored.

[0044] 1. Preparation of superhydrophobic shape memory materials:

[0045] The first step is the preparation of the hydrogen bubble template.

[0046] Electrodeposition of porous Ni thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode is made of 304 stainless steel (1cm 2 ) is the cathode. The pretreatment of stainless steel in the experiment includes polishing, degreasing, acid etching, water washing, absolute ethanol immersion, acetone cleaning, low temperature blast drying, and sticking tape on the back of the stainless steel. The composition of the plating solution is 0.2mol L -1 NiCl 2 , 2mol L -1 NH 4 C1 and 2wt.% acetic acid, the pH is controlled within the range of 4.0±0.5, and the current density of electrodeposition is 3A cm -2 , the dep...

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Abstract

The present invention discloses a preparation method of a shape memory material capable of physically self-repairing superhydrophobic property. The preparation method comprises: 1, preparing a template, wherein a layer of a porous metal is electroplated on the surface of a metal sheet as a material micro-morphology template; and 2, preparing an epoxy resin material having microtopography, wherein an epoxy resin curing system is prepared, a toughening agent is added to the system, the prepared epoxy resin system and the template are placed into a metal mold to cure, and the hydrogen bubble template is removed after curing so as to obtain the epoxy resin material having micro-morphology. According to the present invention, the material prepared by using the preparation method can repair the disappeared superhydrophobic property caused by material micro-morphology deformation due to physical damage, and the method is simple and is easy to perform, and can be provided for substantially increasing the service life of the superhydrophobic material and enhance the durability of the material.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a preparation method of a shape memory material capable of physical self-repairing and superhydrophobic properties. Background technique [0002] Through the analysis of plant surfaces, it was realized that rough surfaces composed of low surface free energy materials should have high hydrophobicity. A superhydrophobic surface is a surface that is extremely impervious to water. Water tends to ball up and roll on the surface. Generally speaking, a superhydrophobic surface has a large contact angle (>150°, rolling angle <10°). Such surfaces exist widely in nature, and materials that imitate natural superhydrophobic surfaces, such as self-cleaning materials, anti-corrosion and anti-fog materials, liquid collection and oil-water separation materials, have a wide range of applications. One of the main preparation methods of superhydrophobic materials is to introduce micro-nano t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K5/17
Inventor 刘宇艳吕通康红军张恩爽谭惠丰
Owner HARBIN INST OF TECH
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