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High-adhesion quasi-super-hydrophobic material and preparation method thereof

A high-adhesion, super-hydrophobic technology, applied in paper coating, water repellent addition, fiber raw material treatment, etc., can solve the problems of complex process and harmful environment, and achieve the effect of simple preparation method and increased contact angle.

Inactive Publication Date: 2021-11-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are not only harmful to the environment, but the process is relatively complicated

Method used

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  • High-adhesion quasi-super-hydrophobic material and preparation method thereof
  • High-adhesion quasi-super-hydrophobic material and preparation method thereof
  • High-adhesion quasi-super-hydrophobic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] At 20-25°C, weigh 0.68g of polyurethane and dissolve it in 20g of N,N-dimethylformamide solvent, and stir for 12h with a magnetic stirrer to obtain a uniform and transparent electrospray solution.

[0045] Using an electrostatic spraying device, the electrospray solution is electrostatically sprayed onto the surface of the silicone oil paper on the flat receiving device, so that polyurethane microspheres are attached to the surface of the silicone oil paper substrate, thereby obtaining a highly adhesive quasi-superhydrophobic material. Among them, the parameters of the electrostatic spray are set as follows: needle inner diameter 0.34mm, voltage 20kV, advancing speed 0.8mL / h, advancing volume 1.2mL, temperature 25°C, relative humidity 65%, the distance between the flat receiving device and the needle (receiving distance) is 15cm , the receiving surface of the flat receiving device is covered with silicone oil paper.

Embodiment 2

[0047] The difference between this embodiment and embodiment 1 lies in that the amount of polyurethane is different, and the voltage and propulsion speed of electrostatic spraying are different. in particular:

[0048]At 20-25°C, weigh 0.48g of polyurethane and dissolve it in 20g of N,N-dimethylformamide solvent, and stir for 12h with a magnetic stirrer to obtain a uniform and transparent electrospray solution.

[0049] Using an electrostatic spraying device, the above-mentioned electrospray solution is electrostatically sprayed onto the surface of the silicone oil paper on the flat receiving device, so that polyurethane microspheres are attached to the surface of the silicone oil paper substrate, thereby obtaining a high-adhesion quasi-superhydrophobic material. Among them, the parameters of the electrostatic spray are set as follows: needle inner diameter 0.34mm, voltage 16kV, advancing speed 0.4mL / h, advancing volume 1.2mL, temperature 25°C, relative humidity 65%, the dista...

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Abstract

The invention discloses a high-adhesion quasi-super-hydrophobic material and a preparation method thereof. The preparation method comprises the following steps that polyurethane is dissolved in N, N-dimethylformamide, and an electronic injection solution with the viscosity range value ranging from 15 mPas to 25 mPas and the conductivity range value ranging from 6.40 s / cm to 10.71 s / cm is obtained; and the electronic injection solution is sprayed on the surface of a base material by adopting an electrostatic spraying method, so that polyurethane microspheres are attached to the surface of the base material, thereby obtaining the high-adhesion quasi-super-hydrophobic material. According to the high-adhesion quasi-super-hydrophobic material and the preparation method thereof, the preparation method is simple, complex equipment is not needed in the preparation process, the prepared high-adhesion quasi-super-hydrophobic material achieves super-hydrophobic or quasi-super-hydrophobic performance, and meanwhile, due to the special chemical composition of polyurethane, the high-adhesion quasi-super-hydrophobic material has high adhesion.

Description

technical field [0001] The invention relates to the technical field of hydrophobic materials, in particular to a high-adhesion quasi-superhydrophobic material and a preparation method thereof. Background technique [0002] In the past two decades, superhydrophobic materials have been fully applied in many fields, such as: self-cleaning, oil-water separation, filtration, bioengineering, transport of tiny water droplets, etc. In nature, superhydrophobic phenomena can be seen everywhere, such as lotus leaves, rose petals, peach skins, etc. The principle of many superhydrophobic materials draws on the hydrophobic properties of lotus leaves: there are many micron-sized papillae on the surface of lotus leaves, and the surface of these papillae is covered with low surface energy wax. Has excellent hydrophobicity and self-cleaning properties. Based on this, the treatment of micro-nano structures is often used to prepare superhydrophobic materials. [0003] Polyurethane is a kind ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/82D21H19/80D21H19/24D21H21/16C09D175/06C09D5/46
CPCD21H19/82D21H19/80D21H19/24D21H21/16C09D175/06C09D5/00
Inventor 王萍叶旭张岩李媛媛徐岚刘福娟
Owner SUZHOU UNIV
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