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Hyperbranched natural oil leather fatliquor containing graphene oxide and its preparation method and application

A technology of leather fatliquor and natural oil, applied in the field of leather fatliquor, can solve the problems of low absorption rate of synthetic fatliquor and environmental pollution, etc.

Active Publication Date: 2020-10-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of petrochemical industry, the synthetic fatliquoring agent mainly based on the alkyl sulfonate, higher fatty acid and higher alcohol obtained from petrochemical industry in the late 20th century has developed rapidly. The environmental pollution problems caused by the large-scale use of fatliquor, the low absorption rate of synthetic fatliquor, and the difficulty of degradation have attracted people's attention.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 15 parts of methanol, 1 part of sodium methoxide and natural oil 320 evenly, carry out alcoholysis reaction at 150~180°C for 2~3 hours under stirring, then add pentaerythritol 60 Parts were transesterified at 180-200°C for 4-5 hours, and then under the same reduced pressure conditions, 60 parts of polyethylene glycol-800 and 5 parts of graphene oxide nanosheets were added in sequence, and the intercalation complex and hydroxyl-encapsulated 17 parts of terminal dimethyl polysiloxane and 15 parts of diethanolamine, carry out esterification and amidation reaction at 120~140°C for 2~3 hours, then cool down to 30~40°C and use acetic acid to control the pH value of the product to 7.5~ 8.5, the resulting product is a hyperbranched natural oil leather fatliquor containing graphene oxide.

Embodiment 2

[0031] Mix 18 parts of methanol, 3 parts of sodium methoxide and 410 parts of natural oil evenly, carry out alcoholysis reaction at 150~180°C for 2~3 hours under stirring, then add pentaerythritol under the condition of blowing nitrogen and reducing pressure to 100 Pa~500 Pa 98 parts were transesterified at 180~200°C for 4~5 hours, and then under the same reduced pressure conditions, 90 parts of polyethylene glycol-800 and 13 parts of graphene oxide nanosheets were added in sequence. 26 parts of capped dimethyl polysiloxane and 23 parts of diethanolamine, carry out esterification and amidation reaction at 120~140°C for 2~3 hours, then cool down to 30~40°C and use acetic acid to control the pH value of the product to 7.5 ~8.5, the resulting product is a hyperbranched natural oil leather fatliquor containing graphene oxide.

Embodiment 3

[0033] Mix 15 parts of methanol, 2 parts of sodium methoxide and 370 parts of natural oil evenly, carry out alcoholysis reaction at 150~180°C for 2~3 hours under stirring, and then add pentaerythritol under the condition of blowing nitrogen and reducing pressure to 100 Pa~500 Pa 83 parts were subjected to esterification reaction at 180~200°C for 4~5 hours, and then under the same reduced pressure conditions, 75 parts of polyethylene glycol-800 and 8 parts of graphene oxide nanosheets prepared intercalation complex, hydroxyl 21 parts of capped dimethylpolysiloxane and 19 parts of diethanolamine, carry out esterification and amidation reaction at 120~140°C for 2~3 hours, then cool down to 30~40°C and use acetic acid to control the pH value of the product to 7.5 ~8.5, the resulting product is a hyperbranched natural oil leather fatliquor containing graphene oxide.

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Abstract

The invention discloses a hyperbranched natural grease leather fatliquoring agent containing graphene oxide and a preparation method and an application thereof. The fatliquoring agent is prepared fromthe following materials in parts by mass: 15-19 parts of methanol, 1-3 parts of sodium methanol, 68-98 parts of pentaerythritol, 320-410 parts of natural grease, 60-90 parts of polyethylene glycol-800, 5-13 parts of a graphene oxide nanosheet layer, 17-26 parts of hydroxyl-terminated dimethylpolysiloxane and 15-23 parts of diethanolamine. The fatliquoring agent is suitable for fatliquoring of anyleather. When the dosage of the fatliquoring agent is 8%-12% of the leather weight, the fatliquoring effect can be achieved. The fatliquoring agent has good permeability in leather collagen fibers, the absorption rate of the fatliquoring agent is as high as 95%-98%, and 2%-5% of the fatliquoring agent is residual in a fatliquoring waste liquid. The fatliquoring agent does not migrate during the use of leather, and the maintenance and durability of the fatliquoring effect are good; because of introduction of the hyperbranched structure and the graphene oxide nano-sheet layer into the leather collagen fibers, obtained leather has the advantages of plump hand feeling, strong sponge feeling, soft leather and good elasticity.

Description

technical field [0001] The invention belongs to the technical field of leather fatliquor, and relates to a hyperbranched natural oil leather fatliquor containing graphene oxide, a preparation method and application thereof. [0002] technical background [0003] Fatliquor is an important leather chemical in leather production. Its function is to lubricate leather fibers, so that the leather can obtain a soft, plump feel, bendability, and comfortable wearing performance. The main component of fatliquor is the compound of oil and its modified products and surfactants. The earliest fatliquors were mainly chemical modification products of natural oils, such as sulfated, sulfited, amidated castor oil and rapeseed oil. With the development of petrochemical industry, the synthetic fatliquoring agent mainly based on the alkyl sulfonate, higher fatty acid and higher alcohol obtained from petrochemical industry in the late 20th century has developed rapidly. The environmental polluti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 吕生华胡浩岩雷颖张佳孙立
Owner SHAANXI UNIV OF SCI & TECH
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