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Preparation method of a multifunctional durable and self-healing superhydrophobic fabric surface

A durable, super-hydrophobic technology, applied in the field of materials, can solve problems such as harmfulness to the environment and human health, damage to rough structures, and limit wide application, and achieve high hydrophobic angle, excellent waterproof performance, and good controllability.

Active Publication Date: 2021-11-23
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these components with low surface energy will gradually decrease after being destroyed by external mechanical force, and their rough structure will be destroyed, which limits their wide application.
Moreover, most of the reported self-healing processes are achieved by the migration of low surface energy fluorine-containing components to the surface, which are usually expensive and toxic, which are harmful to the environment and human health.

Method used

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  • Preparation method of a multifunctional durable and self-healing superhydrophobic fabric surface
  • Preparation method of a multifunctional durable and self-healing superhydrophobic fabric surface
  • Preparation method of a multifunctional durable and self-healing superhydrophobic fabric surface

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preparation example Construction

[0055] The present invention also provides a multi-functional durability and a method of preparing a self-repairing superhydrophobic fabric surface, and specifically includes the following steps:

[0056] (1) Preparation of aqueous polydimethylsiloxane aqueous solution: First, the polydimethylsiloxane is placed in the air, then pour the polydimethylsiloxane into deionized water, and make it Uniform dispersion;

[0057] (2) Preparation of multi-function durability and self-repairing superhydrophobic fabric: first place the fabric in acetone and anhydrous ethanol solution, ultrasonic removal of wax and impurities, take out dry after a period of time; then place the fabric In the aqueous polymethylsiloxane aqueous solution, drying is taken after a period of time;

[0058] (3) Multi-function durability and self-repair superhydrophilic fabric to wear, water washing, and chemical stability test in harsh environments: polydimethylsiloxane @ fabric is mechanically destroyed, becoming a hy...

Embodiment 1

[0070] The polydimethylsiloxane (PDMS) was first plated in the air, the plasma treatment power was 500 W, and the PDMS was poured into deionized water after treatment 10 min, and the concentration of PDMs was 0.9 wt%, 40 ° C Ultrasound 60min. , Make it dispersed evenly in water;

[0071] Detection of the obtained PDMS aqueous solution, see figure 2 with image 3 , figure 2 For an aqueous solution of the aqueous solution and aqueous solution of the PDMS of the present invention, an optical photograph of aqueous PDMS, from figure 2 As can be seen in A, the deionized water is transparent, while the PDMS aqueous solution is creamy liquid. figure 2 b), the PDMS aqueous solution has no layering, which is uniformly dispersed in aqueous solution. In addition, from image 3 It can be seen in the AC, so that the ultrasound makes the PDMS are uniformly dispersed in an aqueous solution, the hydroxyl groups of the PDMS molecule form a hydrogen bond, and the glass is surrounded by a small water-f...

Embodiment 2

[0093] The PDMS is placed in the air, the plasma treatment power is 800 W, and the PDMS is poured into deionized water after treatment for 5 min, and the concentration of PDMs is 0.3% by weight, 30 ° C is solened to disperse it evenly in water.

[0094] First, cut the hemp in blocks of 2 * 2 cm, which is placed in acetone and anhydrous ethanol solution, and take it out after 50min, at 70 ° C in an oven, then given a certain amount of polydimethylsiloxane. The finishing liquid, the mass ratio of the polydimethylsiloxane finishing liquid and the hemp fabric is 1: 1, and the hemp fabric is placed in the prepared polydimethylsiloxane finishing liquid, and after immersion for 2 minutes, take it out in an oven Placed at 90 ° C for 13 h.

[0095] The multi-function durability and intelligent self-repairing superhydrophilic hemp fabric prepared by Example 2 were analyzed, and its contact angle was about 148.6 ° ( Figure 11 .

[0096] Figure 19 The PDMS @Synamic Photographula is prepared ...

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Abstract

The invention provides a method for preparing the surface of a multifunctional durable and self-repairing superhydrophobic fabric, which belongs to the field of material technology. The technical solution is: a method for preparing the surface of a multifunctional durable and self-repairing superhydrophobic fabric. After the fabric is cleaned and dried, it is put into an aqueous solution of polydimethylsiloxane, and after a period of time, it is taken out and dried; Multifunctional durable and self-healing superhydrophobic fabrics were tested for abrasion resistance, water washing, and chemical stability in harsh environments; and applied to oil-water separation tests. The beneficial effects of the present invention are as follows: the present invention disperses PDMS evenly in water by plasma treatment, and prepares a super-hydrophobic fabric surface coating by a one-step dipping method without using any organic solvent and fluorine-containing material, which is environmentally friendly Non-toxic, low cost and suitable for industrial production.

Description

Technical field [0001] The present invention relates to the field of material technology, and more particularly to a multi-functional durability and a method of preparing a self-repairing superhydrophilic fabric. Background technique [0002] He has been inspired by other animal plants such as auto-leaf and gecko, and people have successfully prepared a series of bionic superhydrophilic surfaces because they have special wetting properties, which are widely used in waterproof, anti-fouling, corrosion resistance, and resistance. Ice, anti-oil, oil separation, etc. It is well known that low surface energy and rough structures are two key factors for building superhydrophobic surfaces. Therefore, the researchers have developed many methods to prepare superhydrophobic surfaces such as sol-gel method, hydrothermal method, electrochemical corrosion, vapor deposition, phase separation method, and the like. However, these methods are difficult to produce large-scale production due to sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/643C08J3/28C08J3/03D06M101/06D06M101/10D06M101/12C08L83/04
CPCC08J3/03C08J3/28C08J2383/04D06M15/643D06M2101/06D06M2101/10D06M2101/12D06M2200/12D06M2200/35
Inventor 葛明政曹春艳梁芳华张海峰张伟张瑜
Owner NANTONG UNIVERSITY
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