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Preparation method of acrylic resin/graphene oxide nanometer composite leather finishing agent

A leather finishing agent, acrylic resin technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of poor film-forming mechanical properties, hot stickiness and cold brittleness, external temperature sensitivity, etc., and achieves smooth hand feel and improved tear strength. , the effect of flame retardant and antistatic properties

Active Publication Date: 2013-10-23
JIANGSU BESCON PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the linear characteristics of its structure, the mechanical properties of the film are not good, and it is sensitive to the external temperature, and has the disadvantage of hot stickiness and cold brittleness.

Method used

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  • Preparation method of acrylic resin/graphene oxide nanometer composite leather finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: see figure 1 ,

[0021] 1) Preparation of graphene oxide suspension

[0022] Stir and mix 6 parts of graphite powder with a particle size of <30 microns, 3 parts of sodium nitrate and 60 parts of concentrated sulfuric acid with a mass fraction of 98% in parts by mass at less than 35°C and slowly add 14 parts of potassium permanganate to react for 24 Slowly add 300 parts of deionized water after 1 hour, heat up to 58°C and continue to react for 1.5 hours, then add 16 parts of hydrogen peroxide solution with a mass fraction of 30% dropwise, precipitate and wash repeatedly for several times, then use sodium hydroxide to adjust the pH to 6. Finally, centrifuge and add the separated precipitate graphene oxide into 100 parts of deionized water, and perform ultrasonic treatment for 30 minutes to obtain graphene oxide nano-suspension;

[0023] 2) Graphene oxide / monomer mixture:

[0024] Get 8 parts of graphene oxide suspensions and 10 parts of methyl acrylate, 3 p...

Embodiment 2

[0029] 1) Preparation of graphene oxide suspension

[0030] Stir and mix 6 parts of graphite powder with a particle size of <30 microns, 3 parts of sodium nitrate and 60 parts of concentrated sulfuric acid with a mass fraction of 98% in parts by mass at less than 35°C and slowly add 14 parts of potassium permanganate to react for 24 Slowly add 300 parts of deionized water after 1 hour, heat up to 58°C and continue to react for 1.5 hours, then add 16 parts of hydrogen peroxide solution with a mass fraction of 30% dropwise, precipitate and wash repeatedly for several times, then use sodium hydroxide to adjust the pH to 6. Finally, centrifuge and add the separated precipitate graphene oxide into 100 parts of deionized water, and perform ultrasonic treatment for 30 minutes to obtain graphene oxide nano-suspension;

[0031] 2) Graphene oxide / monomer mixture:

[0032] Get 9 parts of graphene oxide suspensions and 6 parts of methyl acrylate, 4 parts of ethyl acrylate, 26 parts of bu...

Embodiment 3

[0037] 1) Preparation of graphene oxide suspension

[0038] Stir and mix 6 parts of graphite powder with a particle size of <30 microns, 3 parts of sodium nitrate and 60 parts of concentrated sulfuric acid with a mass fraction of 98% in parts by mass at less than 35°C and slowly add 14 parts of potassium permanganate to react for 24 Slowly add 300 parts of deionized water after 1 hour, heat up to 58°C and continue to react for 1.5 hours, then add 16 parts of hydrogen peroxide solution with a mass fraction of 30% dropwise, precipitate and wash repeatedly several times, then use sodium hydroxide to adjust the pH to 6. Finally, centrifuge and add the separated precipitate graphene oxide into 100 parts of deionized water, and perform ultrasonic treatment for 30 minutes to obtain graphene oxide nano-suspension;

[0039] 2) Graphene oxide / monomer mixture:

[0040] Get 10 parts of graphene oxide suspension and 8 parts of methyl acrylate, 5 parts of ethyl acrylate, 28 parts of butyl ...

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Abstract

The invention relates to a preparation method for an acrylic resin / graphene oxide nanometer composite leather finishing agent. In the preparation method, a nanometer graphene oxide suspension liquid is formed through peeling and dispersing; and then the acrylic resin / graphene oxide nanometer composite acrylic resin finishing agent is prepared through in-situ polymerization. The preparation method comprises the following specific steps: carrying out oxidization and ultrasonic stripping on natural graphite powder to prepare graphene oxide; adding graphene oxide to a mixed monomer of methyl acrylate, ethyl acrylate, butyl acrylate, acrylic acid and hydroxyethyl acrylate under the action of ultrasonic waves; and carrying out in-situ free radical copolymerization reaction under the action of an initiator ammonium persulfate to obtain the acrylic resin / graphene oxide nanometer composite leather finishing agent. The preparation method has the characteristics that the acrylic resin / graphene oxide nanometer composite leather finishing agent with excellent film-forming hand feel, strength and anti-static performances and no heat bonding and cold brittleness defects is prepared by using the specific laminated structure and performance of graphene oxide.

Description

technical field [0001] The technical field of the invention relates to a preparation method of a modified acrylic resin leather finishing agent, in particular to a preparation method of an acrylic resin / graphene oxide nanocomposite leather finishing agent. Background technique [0002] Leather finishing has a very important impact on the quality and appearance of leather products. Good leather finishing can not only increase the beauty of leather products, but also improve the durability of leather, correct surface defects of leather, and expand the applicable area of ​​leather. At present, acrylic resins, polyurethane resins and modified protein film-forming agents are commonly used in leather finishing film-forming materials, among which acrylic resins have been used in leather finishing film-forming agents for their excellent light resistance, aging resistance and pigment compatibility. Top notch in material. However, due to the linear characteristics of its structure, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/28C08F2/44C08K9/02C08K3/04D06M15/263D06M11/74
Inventor 吕生华李第
Owner JIANGSU BESCON PHARMA
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