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A method for finishing substrates with superhydrophobic oleophobic flame retardant coating

A flame-retardant coating, super-hydrophobic technology, applied in flame-retardant fibers, wood treatment, fiber treatment, etc., can solve the problem of less attention to the flame-retardant performance of polymer materials, and achieve improved hydrophobic and oleophobic performance, flame retardant The effect of high efficiency and excellent flame retardancy

Active Publication Date: 2020-10-27
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods are simple and feasible, they need to perform electrochemical reactions on the substrate, and are limited to surface treatments such as metals or alloys.
Although there are also some reports to carry out super-amphiphobic treatment (CN102432742A, CN102432781A, CN103588955A) on the surface of polymer materials such as fabrics, films, sheets, but pay less attention to simultaneously improving the flame retardancy of polymer materials

Method used

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  • A method for finishing substrates with superhydrophobic oleophobic flame retardant coating
  • A method for finishing substrates with superhydrophobic oleophobic flame retardant coating
  • A method for finishing substrates with superhydrophobic oleophobic flame retardant coating

Examples

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Embodiment 1

[0026] Prepare 0.5% (mass fraction) aqueous solutions of ferric nitrate and diethylenetriaminepentamethylenephosphonic acid, respectively. Soak the cleaned cotton fabric in ferric nitrate solution for 1 minute, take it out and wash it with deionized water for 1 minute to obtain a substrate modified with a positively charged electrolyte layer; the substrate modified with a positively charged electrolyte layer Soak in diethylenetriaminepentamethylene phosphonic acid solution for 1 minute, take it out and wash it with deionized water for 1 minute to complete the self-assembly of the first bimolecular layer on the surface of the substrate; repeat the above process, in ferric nitrate solution and Diethylenetriaminepentamethylenephosphonic acid solution is alternately treated 2 times to obtain a substrate modified with 2 bimolecular layers; adopt 1% ​​(mass fraction) heptadecafluorooctyltrimethoxysilane solution to treat the above-mentioned After-finishing the base material, and the...

Embodiment 2

[0029] Prepare 2% (mass fraction) aqueous solutions of ferric nitrate and diethylenetriaminepentamethylenephosphonic acid, respectively. Soak the cleaned aramid fabric in ferric nitrate solution for 5 minutes, take it out and wash it with deionized water for 1 minute to obtain a substrate modified with a positively charged electrolyte layer; the substrate modified with a positively charged electrolyte layer Soak the material in diethylenetriaminepentamethylenephosphonic acid solution for 5 minutes, take it out and wash it with deionized water for 1 minute to complete the self-assembly of the first bimolecular layer on the surface of the substrate; repeat the above process, in the ferric nitrate solution and diethylenetriaminepentamethylenephosphonic acid solution to alternately process 5 times to obtain a substrate modified with 5 bimolecular layers; adopt 5% (mass fraction) heptadecafluorooctyltriethoxysilane solution to the above-mentioned The treated base material is subjec...

Embodiment 3

[0032] Prepare 5% (mass fraction) aqueous solutions of ferric nitrate and diethylenetriaminepentamethylenephosphonic acid, respectively. Soak the cleaned cotton fabric in ferric nitrate solution for 15 minutes, take it out and wash it with deionized water for 5 minutes to obtain a substrate modified with a positively charged electrolyte layer; the substrate modified with a positively charged electrolyte layer Soak in diethylenetriaminepentamethylenephosphonic acid solution for 15 minutes, take it out and wash it with deionized water for 5 minutes to complete the self-assembly of the first bimolecular layer on the surface of the substrate; repeat the above process, in the ferric nitrate solution and Diethylenetriaminepentamethylenephosphonic acid solution was alternately treated 30 times to obtain a substrate modified with 30 bimolecular layers; 20% (mass fraction) of heptadecafluorooctyltrimethoxysilane solution was used to treat the above-mentioned treatment After-finishing t...

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Abstract

The invention discloses a method of a super hydro-oleophobic flame retardant coating finishing base material. The method comprises the following steps: firstly, preparing a base material modified by 2to 30 bilayers by using a layer-by-layer self-assembly mode; secondly, carrying out after finishing on the treated base material by using a fluorine-containing siloxane solution and drying, thus obtaining a super hydro-oleophobic flame retardant coating on the surface of the base material. The base material finished by the method has the advantages of super hydro-oleophobic properties and excellent flame retardancy; the defects such as poor water resistance of an existing layer-by-layer self-assembly coating, damage to an internal structure of the material by a traditional flame retardant method and the like are overcome; the method of the super hydro-oleophobic flame retardant coating finishing base material is suitable for the super hydro-oleophobic flame retardant modification of materials such as fabrics, wood, foam and plastics.

Description

technical field [0001] The invention belongs to the field of superhydrophobic, oleophobic and flame-retardant materials, and in particular relates to a method for finishing a base material with a superhydrophobic, oleophobic and flame-retardant coating. Background technique [0002] Surface wettability is one of the important properties of solid surfaces, characterized by using the contact angle of water. Usually, a surface with a water contact angle greater than 150° and a rolling angle less than 10° is called a superhydrophobic surface; a surface with an oil contact angle greater than 150° is called a superoleophobic surface. Superhydrophobic surfaces and superoleophobic surfaces have self-cleaning functions and have the advantages of water saving, energy saving, and environmental protection. [0003] The wettability of solid surfaces is affected by two factors: surface chemical composition and rough structure. When the contact angle of water droplets on the solid surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/65D06M13/447C08J9/40C08L75/04B27K5/00D06M101/06D06M101/36
CPCB27K5/0015B27K2240/70C08J9/40C08J2375/04D06M11/65D06M13/447D06M2101/06D06M2101/36D06M2200/11D06M2200/12D06M2200/30
Inventor 阚永春王鑫胡源宋磊邢伟义
Owner UNIV OF SCI & TECH OF CHINA