Preparation method for multifunctional super-hydrophobic hybrid material

A multi-functional, super-thinning technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of fluorine-containing monomers such as human health hazards, harsh requirements, and limited application range, and achieve low cost, low surface energy, The effect of simple equipment and preparation process

Active Publication Date: 2014-04-16
JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods simplify the construction of superhydrophobic surfaces, the required conditions are harsh and the cost is high.
In addition, in the preparation of existing superhydrophobic materials, fluorine-containing monomers are often grafted on the surface. Because fluorine-containing monomers are potentially harmful to human health and are not conducive to environmental protection, their high price greatly limits their application. scope

Method used

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  • Preparation method for multifunctional super-hydrophobic hybrid material
  • Preparation method for multifunctional super-hydrophobic hybrid material
  • Preparation method for multifunctional super-hydrophobic hybrid material

Examples

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preparation example Construction

[0035] Preparation of silica gel: 9.36g tetraethyl orthosilicate, 3.24g deionized water, and 0.81g acetic acid were added to 19.6g absolute ethanol and stirred for one day, and the pH was adjusted to 9.2 with ammonia water to obtain SiO 2 gel.

[0036] Preparation of titanium dioxide gel: add 5g of titanium isopropoxide and 1g of acetic acid to 108g of absolute ethanol, stir at room temperature for 1h, adjust the pH to 9.2 with ammonia water, and obtain TiO 2 gel.

Embodiment 1

[0038] SiO 2 Gel and TiO 2 The gel was mixed at a mass ratio of 1:1 and placed in a sealed container, treated with methyltrimethoxysiloxane ethanol solution at 70°C for 16 hours, and washed with ethanol three times to obtain a hydrophobic mixed gel powder. Add 0.12g of hydrophobic mixed gel powder into 8mL of chloroform, ultrasonicate for 30min, disperse evenly, add 0.08g of polydimethylsiloxane (PDMS), stir rapidly at room temperature for 20min, and obtain milky white TiO 2 -SiO 2 PDMS hybrid emulsion. The polyester-cotton fabric was soaked in the mixed emulsion for 1 hour, dried at room temperature for 30 minutes, and then dried at 120°C for 2 hours to obtain a fluorine-free superhydrophobic functional polyester-cotton fabric.

[0039] The hybrid emulsion was mixed with methylene blue to form a film, and irradiated with ultraviolet rays for 30 minutes. The hydrophobicity of the sample film is shown in Table 1. Hydrophobic TiO 2 -SiO 2 Infrared spectrum of PDMS organic-...

Embodiment 2

[0041] SiO 2 Gel and TiO 2 The gel was mixed in a sealed container at a mass ratio of 2:1, treated with hexamethyldisilazane isopropanol solution at 60°C for 18 hours, and washed with isopropanol three times to obtain a hydrophobic mixed gel. powder. Add 0.1g of hydrophobic mixed gel powder into 8mL of toluene, ultrasonicate for 60min, after the dispersion is uniform, add 0.1g of polydimethylsiloxane (PDMS), stir rapidly at room temperature for 30min, and obtain milky white TiO 2 -SiO 2 PDMS hybrid emulsion. The polyester fabric was soaked in the mixed emulsion for 1 hour, dried at room temperature for 30 minutes, and then dried at 140°C for 2 hours to obtain a fluorine-free superhydrophobic functional polyester fabric.

[0042] The hybrid emulsion was mixed with methylene blue to form a film, and irradiated with ultraviolet rays for 30 minutes. The hydrophobicity of the sample film is shown in Table 1. The SEM photo of the surface of the superhydrophobic functional fabri...

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Abstract

The invention discloses a preparation method for a multifunctional super-hydrophobic hybrid material (coating) which not only has the photocatalysis performance, but also has super-hydrophobic performance. The preparation method comprises the following steps: firstly, preparing stable silicon dioxide gelatin and titanium dioxide gelatin; adding the silicon dioxide gelatin and the titanium dioxide gelatin at the mass ratio of 1.0-4.0 into an organic silane alcohol solution; sealing, and standing at the temperature of 60-75 DEG C; washing for 3-5 times by an alcohol solution after 16-24 h standing; performing centrifugation, drying and crushing to obtain drainage TiO2-SiO2 mixed gelatin powder; adding the TiO2-SiO2 mixed gelatin powder into a polymer organic solvent, performing supersonic treatment for 30-60 min, quickly stirring at the room temperature for 10-30 min to obtain a mixed hybrid emulsifiable solution.

Description

technical field [0001] The invention relates to a preparation method of a hybrid material, more specifically to a preparation method of a multifunctional superhydrophobic hybrid material. Background technique [0002] Superhydrophobic (surface static contact angle greater than 150°) surfaces widely exist in nature. Natural selection, survival of the fittest, many characteristics of organisms in nature through evolution are almost perfect, many plant roots and leaves, insect wings, water strider legs and bird feathers are all natural super-hydrophobic materials . Studies have shown that by constructing a rough surface with low surface energy and micro-nano scale, a super-hydrophobic surface can be obtained, on which water droplets can roll back and forth freely, and remove pollutants such as dust attached to the surface, thereby effectively containing the material Surface pollution, oxidation, snow accumulation, and fluid viscosity have brought great convenience to people's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M11/46D06M15/643D06M15/564
Inventor 陈苏邓正燕王彩凤
Owner JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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