Fluorine-free super-hydrophobic flexible photo-thermal film and preparation method thereof

A super-hydrophobic, flexible, photothermal technology, applied in the direction of repelling fibers, pigment-containing coatings, coatings, etc. to liquids, which can solve the feasibility of restricting industrial production, difficult to degrade organic pollutants, and the use of flexible substrates. problem, to achieve the effect of short preparation cycle, low price and low cost

Active Publication Date: 2022-02-15
CHENGDU UNIV OF INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation methods of superhydrophobic photothermal coatings in the prior art usually require expensive equipment, raw materials, or synthetic methods or manufacturing processes are cumbersome, which increases its production capacity. The cost restricts the feasibility of industrial production, and, in order to make the coating super-hydrophobic, the coating is usually modified with fluorine-containing surfactants, but fluorine-containing substances not only seriously damage the environment, but also have biological toxicity, It is one of the least degradable organic pollutants; in addition, in practical applications, the use of flexible substrates will be limited in the face of complex environments

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  • Fluorine-free super-hydrophobic flexible photo-thermal film and preparation method thereof
  • Fluorine-free super-hydrophobic flexible photo-thermal film and preparation method thereof
  • Fluorine-free super-hydrophobic flexible photo-thermal film and preparation method thereof

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preparation example Construction

[0037] The present invention firstly provides a method for preparing a fluorine-free superhydrophobic flexible photothermal film, comprising the following steps:

[0038] S1. Dispersing the photothermal material in an organic solvent to obtain a first dispersion;

[0039] S2. Adding a silane coupling agent to the first dispersion for dispersion to obtain a second dispersion;

[0040] S3, coating the second dispersion liquid on the surface of the flexible substrate and performing curing treatment.

[0041] In the present invention, the photothermal material is dispersed in the organic solvent first, and then the silane coupling agent is directly added for reaction. On the one hand, the addition of the silane coupling agent can reduce the surface energy of the coating and increase the hydrophobicity; The adhesion between nanomaterials and the substrate improves the mechanical strength of the coating; during the coating process, photothermal materials can spontaneously aggregate...

Embodiment 1

[0053] The preparation method of the fluorine-free superhydrophobic flexible photothermal film of this embodiment comprises the following steps:

[0054] S1. Add 50 mg of titanium nitride nanoparticles to 10 mL of ethyl acetate, and sonicate for 10 minutes to obtain the first dispersion;

[0055] S2. Add 50 mg of PDMS to the first dispersion, and sonicate for 30 minutes to obtain the second dispersion;

[0056] S3, the second dispersion liquid is added in the spray gun, under the condition that the air pressure of the spray gun is 0.5MPa and the distance is 15cm, use the spray gun to carry out the filter paper surface spray treatment, the size of the filter paper is 100cm 2 ; After spraying, under the condition of 100°C, cure for 1.5 hours to obtain a fluorine-free superhydrophobic flexible photothermal film, such as figure 1 shown.

[0057] A series of tests were carried out on the fluorine-free superhydrophobic flexible photothermal film obtained in Example 1: figure 2 F...

Embodiment 2

[0059] The preparation method of the fluorine-free superhydrophobic flexible photothermal film of this embodiment comprises the following steps:

[0060] S1. Add 600mg of titanium nitride nanoparticles to 300mL of ethyl acetate, and sonicate for 10 minutes to obtain the first dispersion;

[0061] S2. Add 120 mg of PDMS to the first dispersion, and sonicate for 30 minutes to obtain the second dispersion;

[0062] S3, the second dispersion liquid is added in the spray gun, under the condition that the air pressure of the spray gun is 0.5MPa and the distance is 15cm, use the spray gun to carry out the filter paper surface spray treatment, the size of the filter paper is 100cm 2 ; After spraying, under the condition of 100°C, cure for 1.5 hours to obtain a fluorine-free superhydrophobic flexible photothermal film.

[0063] A series of tests were carried out on the fluorine-free superhydrophobic flexible photothermal film obtained in Example 2: Figure 4 For coating surface measu...

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Abstract

The invention discloses a preparation method of a fluoride-free super-hydrophobic flexible photo-thermal film. The preparation method comprises the following steps: S1, dispersing a photo-thermal material in an organic solvent to obtain a first dispersion liquid; S2, adding a silane coupling agent into the first dispersion liquid, and conducting dispersing to obtain a second dispersion liquid; and S3, coating the surface of a flexible substrate with the second dispersion liquid, and then carrying out curing treatment. In a preparation process, a surfactant is not needed to modify the surface to reduce surface energy, so biotoxicity is reduced, and the environment is protected; and a preparation process is simple, cost is low, a preparation period is short, reaction conditions are mild, large-area continuous preparation can be realized, so the film has very wide application prospects and can be used as an ice-inhibiting coating for a building or some specific surfaces.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a fluorine-free superhydrophobic flexible photothermal film and a preparation method thereof. Background technique [0002] With the development of society, the social infrastructure has been greatly enriched. However, various functional materials widely used in the fields of cargo transportation, communication facilities, and aviation and navigation have caused serious damage to these fields because of their icing and corrosion. potential safety hazards and property damage. When superhydrophobic materials are used as coating materials for surface modification, they are one of the most effective means of metal protection due to their unique micro-nano structure. . At present, based on the principle of superhydrophobic coating, adding nanoparticles with photothermal effect can prepare a coating with coexistence of superhydrophobic anti-icing and photothermal deicing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/38D21H19/46D21H21/52D06M11/58D06M15/643
CPCD21H19/38D21H19/46D21H21/52D06M11/58D06M15/643D06M2200/12
Inventor 余鹏王保清唐婷婷赵明熙
Owner CHENGDU UNIV OF INFORMATION TECH
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