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Preparation method of self-cleaning leather or product containing nano functional material

A nano-functional, self-cleaning technology, applied in the field of self-cleaning leather or product preparation, can solve the problem of no leather self-cleaning technology

Inactive Publication Date: 2008-08-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN1242114C discloses nanometer self-cleaning cashmere or products and its preparation method; Preparation method, Chinese patent CN 100334291C discloses a method for preparing down jacket fabrics with self-cleaning function. The rough structure of these patented nanoparticles uses organic fluorine finishing agents to impregnate, coat or spray the fabrics, endowing the fabrics with both hydrophobic and repellent properties. Oil performance, but so far there is no report on leather self-cleaning technology

Method used

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  • Preparation method of self-cleaning leather or product containing nano functional material

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Embodiment 1

[0013] Example 1: 1) First, mix nanoscale solid particle silicon oxide with a particle size of 10 to 100 nm and an ethanol solution containing a fluorine-containing alkyl triethoxysilane compound to form a mixed solution, wherein the nanoscale solid particles account for 2% of the mass, the fluorine-containing alkyl triethoxysilane compound accounts for 0.2% of the mass of the mixed solution, and the balance is ethanol; then, the dyed, oiled, and dried The cowhide shoe upper leather after finishing is immersed in the mixture for 10-60 minutes at a dipping temperature of 15° C., hung to dry naturally, and then dried at 70° C.

Embodiment 2

[0014] Example 2: 1) First, mix nanoscale solid particle silicon nitride with a particle size of 10 to 100 nm and an ethanol solution containing a fluorine-containing alkyl triethoxysilane compound to form a mixed solution, wherein the nanoscale solid particle accounts for the mixed solution. 0.1% of the liquid mass, the fluorine-containing alkyl triethoxysilane compound accounts for 4% of the mixed liquid mass, and the balance is ethanol; then, the dyed, oiled, and After drying and finishing, the sheepskin clothing leather is immersed in the mixed solution for 10-60 minutes at a dipping temperature of 40°C, hung to air naturally, and then dried at 50°C.

Embodiment 3

[0015] Embodiment 3: 1) First, the nano-scale solid particle hydrotalcite with a particle size of 10 to 100 nm and the ethanol solution of a fluorine-containing alkyl triethoxysilane compound are mixed to form a mixed solution, wherein the nano-sized solid particle accounts for 0.8% of the mass, the fluorine-containing alkyl triethoxysilane compound accounts for 0.01% of the mass of the mixed solution, and the balance is ethanol; then, the cowhide shoe upper leather is immersed in the mixed solution under the condition that the bath ratio is 1:60 by dipping method 10-60 minutes, the impregnation temperature is 60 ℃, hang to dry naturally, and then dry at 40 ℃.

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Abstract

A preparation process of self-clearing leather or products comprises nano functional material, which comprises mixing nano inorganic solid particles and alcohol solution of fluorine-containing alkyl triethoxy silane compound to prepare mixing solution, then impregnating through the impregnation method or conducting spray coating through the spraying process, and then drying. Since fluorine-containing alkyl triethoxy silane compound is used, therefore the process has high bonding strength to leather fiber, has excellent water repellency and oil repellency without high temperature cross-linking, has simple processing technique to face fabric, and can save energy. Leather is endowed with higher roughness factors through adopting the compounding of nano solid particles, thereby further increasing hydrophobic and oleophobic properties, and making leather have self-clearing function since leather is water free and oil free.

Description

technical field [0001] The invention belongs to the field of leather processing, in particular to a method for preparing self-cleaning leather or products containing nano functional materials. Background technique [0002] Natural leather is favored by consumers because of its superior moisture absorption, vapor permeability, heat dissipation, and warmth retention. In daily consumer goods such as leather shoes, leather clothing, leather bags and other products, in order to maintain the natural characteristics of leather, the coating amount of high-grade leather is generally low or not coated. The hydrophilicity of leather is better, and the waterproof and oil-proof performance is poor. Even heavily finished leather is generally less oil-resistant. Leather products get wet, which can harden and deform them if not handled properly. Leather products, such as leather clothes and leather bags are stained with oil, and consumers mainly send them to leather goods cleaning shops f...

Claims

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Application Information

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IPC IPC(8): C14C9/00B05D7/12
Inventor 薛朝华贾顺田
Owner SHAANXI UNIV OF SCI & TECH
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