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Preparation method of nano self-cleaning leather or product

A nano self-cleaning and leather technology, which is applied in leather surface treatment, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc. It can solve poor oil resistance and coating quantity Low or no coating, poor water and oil repellency, etc., to achieve the effect of increasing service life and significant benefits

Inactive Publication Date: 2012-05-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In daily consumer goods such as leather shoes, leather clothes, 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 leathers are generally less oil-resistant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: First, the Scotchgard PM-4701 organic fluorine resin of 8% 3M company, the particle diameter of 0.5% are 10~100nm silicon oxide, 1.2% triethanolamine and 2.5% propylene glycol mixed with water by mass percentage Obtain the organic fluorine coating agent; then, at room temperature, use the organic fluorine coating agent to brush the cowhide shoe upper leather base after dyeing, oiling, and drying, pre-baking at 50 ° C for 5 minutes, and finally drying at 50 ° C to obtain Nano self-cleaning cowhide upper leather.

Embodiment 2

[0011] Embodiment 2: at first, the Scotchgard PM-4701 organic fluorine resin of 2% 3M company, the particle diameter of 1.3% are the zinc oxide of 10~100nm, the vinyltriethoxysilane of 2% and 0.8% by mass percentage Mix triethanolamine with water to obtain an organic fluorine finishing agent; then, at room temperature, use the organic fluorine finishing agent to spray the sheepskin garment leather base after dyeing, oiling, drying and finishing, and the dosage is 10-12g / foot 2 , pre-dried at 40°C for 15 minutes, and finally dried at 80°C to obtain nano self-cleaning sheepskin garment leather.

Embodiment 3

[0012] Embodiment 3: at first, the Scotchgard PM-4701 organic fluorine resin of 10% 3M company, the particle diameter of 2.6% are the titanium oxide of 10~100nm, the vinyltrimethoxysilane of 4% and 3% by mass percent Propylene glycol is mixed with water to obtain an organic fluorine coating agent; then, the cowhide white shoe upper leather blank is sprayed with an organic fluorine coating agent at room temperature, pre-baked at 30°C for 30 minutes, and finally dried at 70°C to obtain a nanometer self-cleaning cowhide white finish. upper leather.

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Abstract

A preparation process of nano self-clearing leather or product comprises firstly mixing organic fluoro-resin, nano solid particles, silane coupling agent, triethanolamine and propylene glycol with water to obtain organic fluorine finishing agent, then conducting spray coating, brush painting or roller painting to leather or products with organic fluorine finishing agent under the constant temperature, preliminarily drying for 5-30 min under 30-50 DEG C, and finally completely drying leather and products under 50-95 DEG C. The process endows high roughness factors to leather and products through the compounding of organic fluorine finishing agent and nano solid particles which are used in the traditional leather production, thereby further increasing hydrophobic and oleophobic properties, and making leather have self-clearing function since leather is water free and oil free. Leather and products which are treated are led to have the super hydrophobic and oleophobic properties, and be water free and oil free, thereby realizing the purpose of self-clearing, not only increasing service life, but also having significant benefits in environmental-friendly and energy-saving aspects.

Description

technical field [0001] The invention belongs to the field of leather processing, in particular to a preparation method of nanometer self-cleaning leather or products. 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 for cleaning. [0003] Wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C11/00C09D127/12C09D7/12B05D7/12
Inventor 薛朝华贾顺田
Owner SHAANXI UNIV OF SCI & TECH
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