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Preparation method of ecological functional leather based on nano material

An ecological function and nano-material technology, applied in leather impregnation, leather surface treatment, small raw hide/big raw hide/leather/fur treatment, etc., to achieve the effect of improving softness, improving wear resistance and reducing dosage

Active Publication Date: 2021-03-16
XINGYE LEATHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a new type of material, nanomaterials have been involved in the research of innovative materials, but the existing nanotechnology mainly focuses on the modification of nanomaterials such as montmorillonite, nano-zinc oxide, and nano-silicon dioxide by experimenting with organic substances. On the preparation of nano-tanning agents, there are few reports in other aspects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for preparing ecologically functional leather based on nanomaterials, comprising the steps of:

[0054] Step 1: Preparation of nano-titanium dioxide-polyurethane retanning agent

[0055] (1) Take 5 parts of nano-titanium dioxide in a reaction vessel, add 0.4 parts of aminosilane coupling agent, 0.1 part of epoxy silane coupling agent, 50 parts of water, 100 parts of ethanol, stir and disperse, adjust pH = 10, and then ultrasonic Disperse for 5 minutes, react at a temperature of 30°C for 5 hours, filter, wash, and dry to obtain modified nano-titanium dioxide;

[0056] (2) Take 3 parts of polytetramethylene glycol, add to the reactor after dehydration treatment, add 0.8 parts of isophorone diisocyanate, and pre-polymerize at 80°C for 2 hours. Cool down to 65°C, add 0.4 parts of acetone to dilute, add 0.3 parts of butanediol, and react for 4 hours. Add 0.1 part of dimethylolpropionic acid, react for 2h. Cool down to 50°C, add 0.1 part of triethylamine to neutra...

Embodiment 2

[0101] A method for preparing ecologically functional leather based on nanomaterials, comprising the steps of:

[0102] The method of present embodiment 2 is identical with embodiment 1, difference is anion filling process, anion filling dyeing process, specifically as follows:

[0103] (5) Anion filling: Add 50% water and 3% nano-titanium dioxide-polyurethane retanning agent to the drum, control the temperature to 30°C, and rotate for 10 minutes. Add 2% acrylic resin retanning agent TP340 (ALPA Leather Chemical Company), 3% acrylic resin retanning agent CC (Xiamen Wantongli Chemical Materials Co., Ltd.), and rotate for 60 minutes. Add 0.5% anionic fatliquoring agent OSL (Toppler), 2% synthetic tanning agent FO (BASF), 3% amino resin tanning agent HB (Toppler), 2% protein filler FB (Desaier Chemical Industry Co., Ltd.), rotate for 90 minutes. Add 100% water, add 1% formic acid, control the temperature at 30°C, rotate for 20min, add 1% formic acid, rotate for 20min.

[0104]...

Embodiment 3

[0106] A method for preparing ecologically functional leather based on nanomaterials, comprising the steps of:

[0107] The method of present embodiment 3 is identical with embodiment 1, difference is anion filling process, anion filling dyeing process, specifically as follows:

[0108] (5) Anion filling: add 50% water into the drum, add 2% nanometer titanium dioxide-polyurethane retanning agent, control the temperature at 30°C, and rotate for 10 minutes. Add 2% acrylic resin retanning agent TP340 (ALPA Leather Chemical Company), 3% acrylic resin retanning agent CC (Xiamen Wantongli Chemical Materials Co., Ltd.), and rotate for 60 minutes. Add 0.5% anionic fatliquoring agent OSL (Toppler), 2% synthetic tanning agent FO (BASF), 3% amino resin tanning agent HB (Toppler), 2% protein filler FB (Desaier Chemical Industry Co., Ltd.), rotate for 90 minutes. Add 100% water, add 1% formic acid, control the temperature at 30°C, rotate for 20min, add 1% formic acid, rotate for 20min. ...

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PUM

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Abstract

The invention discloses a preparation method of ecological functional leather based on a nano material. The preparation method comprises a wet dyeing and finishing process. The technological process of the wet dyeing and finishing process is characterized by comprising the steps of obtaining crust leather through tanning of a cationic metal tanning agent, re-wetting, anionic surface dyeing 1, neutralizing 1, anionic filling, cationic re-tanning, neutralizing 2, anionic filling and dyeing, anionic fat liquoring, cationic fixing 1, anionic surface dyeing 2, cationic fixing 2 and cationic fat liquoring; wherein a nano titanium dioxide modifier is added into at least one of the anion filling process and the anion filling and dyeing process; according to the application, a nano titanium dioxidemodifier with a photocatalytic function is used in the leather wet dyeing and finishing section, formaldehyde in leather can be removed, the antibacterial and bacteriostatic effects can be achieved,and the application of the nano titanium dioxide modifier in the leather wet dyeing and finishing section is expanded.

Description

technical field [0001] The invention relates to the technical field of leather production, in particular to a method for preparing ecologically functional leather based on nanomaterials. Background technique [0002] Nanotechnology is an emerging technology that emerged in the 1990s and is listed as one of the key technologies in the 21st century by various countries. As a traditional industry, the leather industry is facing the pressure of environmental regulations and consumers' increasing requirements for leather performance. Green leather and functional leather are the future development direction of the leather industry. As a new type of material, nanomaterials have been involved in the research of innovative materials, but the existing nanotechnology mainly focuses on the modification of nanomaterials such as montmorillonite, nano-zinc oxide, and nano-silicon dioxide by experimenting with organic substances. There are few other reports on the preparation of nano-tanni...

Claims

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Application Information

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IPC IPC(8): C14C3/28C14C9/02C14C11/00C09D105/08C09D7/61D06P1/39D06P3/32
CPCC14C3/28C14C9/02C14C11/00C09D105/08C09D7/61D06P1/39D06P3/3206C08K2201/011C08K2003/2241C08K3/042C08K3/22
Inventor 黄朝七梁永贤张越荣申治伟姚庆达曾凡辉孙圣忠温会涛但卫华
Owner XINGYE LEATHER TECH CO LTD
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