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 suc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] Example 1:

[0053] A preparation method of ecological functional leather based on nanomaterials, comprising the following steps:

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

[0055] (1) Take 5 parts of nano titanium dioxide in the reaction vessel, add 0.4 part 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, then ultrasonically Disperse for 5min, react at 30°C for 5h, filter, wash and dry to obtain modified nano-titanium dioxide;

[0056] (2) Take 3 parts of polytetramethylene glycol, add it to the reactor after dehydration treatment, add 0.8 part of isophorone diisocyanate, and prepolymerize at 80°C for 2 hours. The temperature was lowered to 65°C, 0.4 part of acetone was added to dilute, 0.3 part of butanediol was added, and the reaction was carried out for 4h. 0.1 part of dimethylolpropionic acid was added, and the reaction was c...

Example Embodiment

[0100] Example 2

[0101] A preparation method of ecological functional leather based on nanomaterials, comprising the following steps:

[0102] The method of this embodiment 2 is the same as that of embodiment 1, and the difference is the anion filling process and the anion filling dyeing process, as follows:

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

Example Embodiment

[0105] Example 3

[0106] A preparation method of ecological functional leather based on nanomaterials, comprising the following steps:

[0107] The method of this embodiment 3 is the same as that of embodiment 1, the difference is the anion filling process and the anion filling dyeing process, as follows:

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

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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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