Preparation method for super-hydrophobic material

A super-hydrophobic, base material technology, applied in liquid-repellent fibers, animal husbandry, chemical treatment of small raw hides/large raw hides/leather skins/furs, etc., can solve high processing costs, complicated preparation processes, and expensive processing equipment And other issues

Inactive Publication Date: 2016-09-21
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation process of the above-mentioned superhydrophobic materials is relatively complicated, and the preparation of materials requires special processing equipment, and the processing equipment is expensive and the processing cost is high.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Rinse and dry the 6cm×6cm×1.5mm blue leather with deionized water and absolute ethanol in sequence. Then add 10mL of 0.1mol / L butyl titanate in absolute ethanol, and after the solution is absorbed by the blue leather, the loaded nano-TiO can be obtained by drying. 2 Particles of leather (TiO 2 -Leather).

[0040] TiO 2-Leather soaked in 0.1mol / L vinyltriethoxysilane (VTEO) toluene solution for 24h, after drying, superhydrophobic leather VTEO-TiO can be prepared 2 -Leather.

[0041] The resulting VTEO-TiO 2 -Leather tested its surface wettability with 5 μL deionized water on a DSA100 contact angle measuring instrument. 10 different positions were randomly selected on the sample, and the contact angle was measured, and the average value was 153°.

Embodiment 2

[0043] Rinse and dry the 6cm×6cm×1.5mm blue leather with deionized water and absolute ethanol in sequence. According to the proportion by volume, add 3 parts of equal volume of tetraethyl orthosilicate and ammonia water (mass concentration 28%-33%) to 50 parts of absolute ethanol, and magnetically stir at room temperature to prepare nano-SiO 2 Particles in a sol. Soak the blue leather in the above lyosol for 10min, take it out and dry it, then the nano-SiO 2 Particles of leather (SiO 2 -Leather).

[0044] According to the volume ratio, 2 parts of polymethyl methacrylate emulsion (PMMA) were dispersed in 30 parts of deionized water and 18 parts of absolute ethanol to obtain a PMMA solution, and the SiO 2 -Leather soaked in the above PMMA solution for 10min, taken out and dried to obtain PMMA-treated SiO 2 -Leather (PMMA-SiO 2 -Leather).

[0045] PMMA-SiO 2 -Leather soaked in 10mmol / L VTEO toluene solution for 24h, taken out and dried to obtain superhydrophobic leather VT...

Embodiment 3

[0048] Rinse 6cm×6cm×1.5mm blue leather with deionized water and absolute ethanol in sequence and dry. Prepare 25 parts of anhydrous ethanol solution of 0.06mol / L cerium nitrate, add 4 parts of 0.1mol / L sodium hydroxide solution, and prepare nano-CeO 2 Particles in a sol. Soak the blue leather in the above lyosol for 5min, take it out and dry it, then the nano-CeO 2 Particles of leather (CeO 2 -Leather).

[0049] Disperse 5 parts by mass of sylgard184 silicone rubber (PDMS) in 95 parts by mass of isopropanol to obtain a solution of PDMS, and the CeO 2 -Leather soaked in the above PDMS solution for 5min, taken out and dried to obtain PDMS-treated CeO 2 -Leather (PDMS-CeO 2 -Leather).

[0050] According to the volume ratio, mix 2 parts of fluorosilane (FAS), 39 parts of deionized water and 59 parts of absolute ethanol to obtain the FAS solution, and then add PDMS-CeO 2 -Leather is soaked in the above FAS solution for 48h, taken out and dried to obtain superhydrophobic lea...

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Abstract

The invention provides a preparation method for a super-hydrophobic material. The method comprises the following steps: (1) modifying the integral three-dimensional structure of a substrate material by using a nanomaterial with a nanotechnology, so that the roughness of the integral three-dimensional structure of the material is increased; (2) coating the material with a low-surface-energy substance through a surface modifying technology to obtain the super-hydrophobic material. The static contact angle between the super-hydrophobic material and water is 152-158 degrees. The prepared super-hydrophobic material has superior hydrophobicity, the preparation process is simple, the reaction conditions are mild, and special machining equipment is not needed.

Description

technical field [0001] The invention belongs to the technical field of super-hydrophobic materials and their preparation, and specifically relates to a general method for preparing super-hydrophobic materials by modifying various substrates (leather, cloth and melamine foam) using nanotechnology and surface modification technology. Background technique [0002] Due to its excellent water repellency, superhydrophobic materials have shown broad application prospects in the fields of self-cleaning, waterproof and antifouling, drag reduction and noise reduction, and water treatment (T.Darmanin, et al.Recent advances in the potential applications of bioinspired superhydrophobic materials[J]. (2): 16319-16359; R. Truesdell, et al. Drag reduction on patterned superhydrophobic surface [J]. Physical Review Letters, 2006, 97 (4): 044501-4.). At present, this type of new functional material has huge market demand in many fields such as national defense, construction, and coatings. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40D06M15/564D06M11/46D06M13/50D06M15/263D06M11/79D06M15/643C14C9/00C08L61/28
CPCC08J9/40C08J2361/28C14C9/00D06M11/46D06M11/79D06M13/50D06M15/263D06M15/564D06M15/643D06M2101/06D06M2200/12
Inventor 黄鑫孔纤石碧张浚铭廖学品
Owner SICHUAN UNIV
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