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Oxidized graphene and water-soluble vinyl monomer copolymerized leather tanning agent and preparation method thereof

A vinyl monomer and copolymer technology, which is applied in the field of graphene oxide and water-soluble vinyl monomer copolymer leather tanning agent and its preparation, can solve the problem that the chemical effect of the tanning agent and the leather fiber cannot reach the main tanning agent. requirements, can not be used as the main tanning agent and other problems, to achieve the effect of less residual, soft hand feeling, good application prospects

Active Publication Date: 2014-12-24
苏州盛泽科技创业园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current synthetic tanning agents and acrylic resin retanning agents can only be used as retanning agents and cannot be used as main tanning agents, because the chemical action between these tanning agents and leather fibers is far from meeting the requirements of main tanning agents

Method used

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  • Oxidized graphene and water-soluble vinyl monomer copolymerized leather tanning agent and preparation method thereof
  • Oxidized graphene and water-soluble vinyl monomer copolymerized leather tanning agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: preparation of graphene oxide.

[0035] Slowly add 1 part of graphite powder to a mixture of 40 parts by mass of 98% concentrated sulfuric acid and 3 parts by mass of 85% concentrated phosphoric acid, control the temperature of the system at 5°C, and slowly Add 5 parts of potassium permanganate, react at this temperature for 3 hours, then raise the temperature to 35°C and continue the reaction for 1 hour, then slowly add 150 parts of deionized water, raise the temperature to 90°C and react for 4 hours; then cool down to 50°C Add 20 parts by mass of 30% hydrogen peroxide solution dropwise, react for 30 minutes, then lower the temperature to centrifuge the product, wash it with deionized water until the pH of the washing water is 6.0, and disperse it with ultrasonic waves for 1 hour to obtain Graphene oxide nanosheet dispersion liquid, and control the mass fraction of graphene oxide at about 4%, the thickness of graphene oxide nanosheets is 8~15nm, and the length ...

Embodiment 2

[0043] Step 1: preparation of graphene oxide.

[0044] Slowly add 1 part of graphite powder to a mixture of 40 parts by mass of 98% concentrated sulfuric acid and 3 parts by mass of 85% concentrated phosphoric acid, control the temperature of the system at 5°C, and slowly Add 5 parts of potassium permanganate, react at this temperature for 3 hours, then raise the temperature to 35°C and continue the reaction for 1 hour, then slowly add 150 parts of deionized water, raise the temperature to 90°C and react for 4 hours; then cool down to 50°C Add 20 parts by mass of 30% hydrogen peroxide solution dropwise, react for 30 minutes, then lower the temperature to centrifuge the product, wash it with deionized water until the pH of the washing water is 6.0, and disperse it with ultrasonic waves for 1 hour to obtain oxidation. Graphene nanosheet dispersion liquid, and control the mass fraction of graphene oxide at about 4%, the thickness of graphene oxide nanosheets is controlled to be 8...

Embodiment 3

[0052] Step 1: preparation of graphene oxide.

[0053] Slowly add 1 part of graphite powder to a mixture of 40 parts by mass of 98% concentrated sulfuric acid and 3 parts by mass of 85% concentrated phosphoric acid, control the temperature of the system at 5°C, and slowly Add 5 parts of potassium permanganate, react at this temperature for 3 hours, then raise the temperature to 35°C and continue the reaction for 1 hour, then slowly add 150 parts of deionized water, raise the temperature to 90°C and react for 4 hours; then cool down to 50°C Add 20 parts by mass of 30% hydrogen peroxide solution dropwise, react for 30 minutes, then cool down and centrifuge the product, wash it with deionized water until the pH of the washing water is 6.0, and disperse it with ultrasonic waves for 1 hour Obtain the graphene oxide nanosheet dispersion liquid, and control the mass fraction of graphene oxide at about 4%, control the thickness of the graphene oxide nanosheet layer to be 8~15nm, and t...

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Abstract

The invention discloses an oxidized graphene and water-soluble vinyl monomer copolymerized leather tanning agent. The leather tanning agent is prepared from the following raw materials in parts by weight: 20-30 parts of oxidized graphene nanosheet dispersion liquid, 0.5-1 part of an oxidizing agent, 60-80 parts of a monomer mixed solution, and 20-30 parts of an initiator. The invention further discloses a preparation method of the oxidized graphene and water-soluble vinyl monomer copolymerized leather tanning agent. The preparation method adopts the water-solution free radical polymerization reaction to implement the free radical copolymerization reaction for double bonds in the oxidized graphene structure and the water-soluble vinyl monomer, so that the obtained copolymer both comprises the oxidized graphene nanosheet and the water-based vinyl structural unit; furthermore, the size of the oxidized graphene nanosheet can be reduced and the distribution can be more uniform, and the tanning agent can generate the chemical bond function and the nanometer size effect after the tanning agent permeates the leather collagenous fibers, so as to obtain the tanning effect on the leather fibers; the tanning agent can serve as the leather tanning agent separately.

Description

technical field [0001] The invention belongs to the technical field of green chrome-free leather tanning agents, and in particular relates to a graphene oxide and water-soluble vinyl monomer copolymer leather tanning agent and a preparation method thereof. Background technique [0002] At present, my country is a big country in leather production and trade in the world. While the leather industry creates huge material wealth for the country and provides employment opportunities for people, it also produces serious pollution problems. The reason is that the production and processing of leather is a process of chemically modifying the fur of natural animals. Its basic characteristics are that the amount of leather chemicals used in production is large and the absorption rate is low, resulting in a large amount of leather containing Wastewater, sludge and dander of various chemicals. Among them, the pollution produced by the leather tanning process is the most serious and diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/22C08F220/06C08F228/02
Inventor 吕生华赵浩然贺亚亚周庆芳
Owner 苏州盛泽科技创业园发展有限公司
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