Preparation method for leather greasing agent containing modified graphene oxide

A technology of leather fatliquor and oxide stone, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. problem, to achieve the effect of improving the dyeing effect, high absorption rate and good softening effect

Active Publication Date: 2012-07-18
史密特(南京)皮革化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on nano-graphene oxide in these fields is currently a research hotspot at home and abroad, it is still far away from large-scale application, because in these fields, graphene oxide is only a means to achieve nano-dispersion, and the subsequent Reduction reaction and nano-scale dispersion in anhydrous state is a temporary difficult thing to do

Method used

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  • Preparation method for leather greasing agent containing modified graphene oxide
  • Preparation method for leather greasing agent containing modified graphene oxide
  • Preparation method for leather greasing agent containing modified graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: Preparation of graphene oxide:

[0038] Slowly add 50 parts by weight of concentrated sulfuric acid under stirring to a mixture of 5 parts by weight of graphite powder with a particle size of less than 30 microns and a mass fraction of carbon of 99.9% and 5 parts by weight of sodium nitrate, and control the temperature of the system <20 ℃, after adding and mixing evenly, slowly add 18 parts by weight of potassium permanganate; then react at 50 ℃ for 30 minutes, then slowly add 280 parts by weight of deionized water, heat up to 100 ℃ for 4 hours; then cool down Add 20 parts by weight of hydrogen peroxide solution with a mass fraction of 30% dropwise to 70°C, react for 30 minutes, wash with deionized water, adjust the pH to 7.0, and disperse with ultrasonic waves for 30 minutes to obtain a graphene oxide aqueous solution;

[0039] Step 2: Preparation of graphene oxide and octadecyldimethyl-2-hydroxyethylammonium bromide intercalation complex:

[0040] Take 5 part...

Embodiment 2

[0046] Step 1: Preparation of graphene oxide:

[0047] Slowly add 50 parts by weight of concentrated sulfuric acid under stirring to a mixture of 5 parts by weight of graphite powder with a particle size of less than 30 microns and a mass fraction of carbon of 99.9% and 5 parts by weight of sodium nitrate, and control the temperature of the system <20 ℃, after adding and mixing evenly, slowly add 18 parts by weight of potassium permanganate; then react at 50 ℃ for 30 minutes, then slowly add 280 parts by weight of deionized water, heat up to 100 ℃ for 4 hours; then cool down Add 20 parts by weight of hydrogen peroxide solution with a mass fraction of 30% dropwise to 70°C, react for 30 minutes, wash with deionized water, adjust the pH to 7.0, and disperse with ultrasonic waves for 30 minutes to obtain a graphene oxide aqueous solution;

[0048] Step 2: Preparation of graphene oxide and octadecyldimethyl-2-hydroxyethylammonium bromide intercalation complex:

[0049] Take 5 parts ...

Embodiment 3

[0055] Step 1: Preparation of graphene oxide:

[0056] Slowly add 50 parts by weight of concentrated sulfuric acid under stirring to a mixture of 5 parts by weight of graphite powder with a particle size of less than 30 microns and a mass fraction of carbon of 99.9% and 5 parts by weight of sodium nitrate, and control the temperature of the system <20 ℃, after adding and mixing evenly, slowly add 18 parts by weight of potassium permanganate; then react at 50 ℃ for 30 minutes, then slowly add 280 parts by weight of deionized water, heat up to 100 ℃ for 4 hours; then cool down Add 20 parts by weight of hydrogen peroxide solution with a mass fraction of 30% dropwise to 70°C, react for 30 minutes, wash with deionized water, adjust the pH to 7.0, and disperse with ultrasonic waves for 30 minutes to obtain a graphene oxide aqueous solution;

[0057] Step 2: Preparation of graphene oxide and octadecyldimethyl-2-hydroxyethylammonium bromide intercalation complex:

[0058] Take 5 part...

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Abstract

The invention relates to a preparation method for a leather greasing agent containing modified graphene oxide. The greasing agent is a leather chemical product with the maximum consumption in the production process. The preparation method comprises the following steps: adding sulfuric acid into graphite powder and sodium nitrate; adding potassium permanganate, washing and carrying out ultrasound to obtain a graphene oxide aqueous solution; dissolving octadecyl dimethyl-2-hydroxyethyl ammonium bromide into absolute ethyl alcohol; adding the mixed solution into a graphene oxide dispersion solution and carrying out ultrasound to obtain graphene oxide and octadecyl dimethyl-2-hydroxyethyl ammonium bromide direct intercalation composition; mixing and reacting oleic acid, methoxy polyethylene glycol 1200 and para-toluenesulfonic acid to obtain oleic acid polyethylene glycol monomethyl ether ester; uniformly stirring the obtain graphene oxide intercalation composition, the oleic acid polyethylene glycol monomethyl ether ester, natural grease, sulfonated oil SS, isopropanol and de-ionized water; and carrying out ultrasonic dispersion to obtain the leather greasing agent. The leather greasing agent disclosed by the invention has an excellent softening effect for leather fiber, the function of improving strength and toughness, and a very high absorption rate; and the dyeing effect of leather is remarkably improved.

Description

technical field [0001] The invention relates to a preparation method of a leather fatliquor, in particular to a preparation method of a leather fatliquor containing modified graphene oxide. Background technique [0002] Fatliquor is the most used leather chemical in the leather production process, and the quality of fatliquor is one of the main factors affecting the quality of leather. Therefore, the research and development of fatliquor with ideal performance has always been one of the hot spots of research. Fatliquor is a compound formed by compounding various oils and their modified products and appropriate surfactants. At present, leather fatliquor pays more attention to the compounding and compounding of different components in terms of composition. At present, the main leather fatliquor is made of modified products of natural oils and synthetic oils, surfactants, functional additives, etc. Appropriate ratio compounding is mainly achieved through compounding to maximi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
Inventor 吕生华马宇娟邱超超
Owner 史密特(南京)皮革化学品有限公司
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