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Graphene-based inflaming retarding leather fat mixture and preparation method thereof

A leather fatliquor, graphene-based technology, applied in the field of leather chemicals, can solve the problems of reducing graphene performance, graphene agglomeration and precipitation, etc., to achieve the effects of improving flame retardant performance, solving agglomeration and improving quality

Inactive Publication Date: 2018-12-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not use chemical bonding to introduce graphene into fatliquoring agent molecules, so that graphene is prone to agglomeration and precipitation during its storage, use and after fatliquoring, thereby reducing the performance of graphene

Method used

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  • Graphene-based inflaming retarding leather fat mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of aminated graphene, in parts by weight

[0030] 10 parts of graphene oxide and a certain amount of organic solvent were added to a 500 mL round-bottomed flask equipped with a nitrogen protection device, mechanical stirring and a constant pressure dropping funnel, and ultrasonically dispersed for 1.0 h; 25 parts of triethylamine were added, and 35 parts of hexachlorocyclotriphosphorus cyanide diluted with organic solvent was added dropwise to the reaction solution, and the reaction was carried out at 60 °C for 6 h; then 30 parts of ethylenediamine were added dropwise to the system, and the reaction was carried out at 60 °C for 10 h; finally, it was cooled and filtered under reduced pressure. , washed with absolute ethanol, and vacuum-dried to obtain aminated graphene;

[0031] (2) Preparation of grease-maleic anhydride copolymer, in parts by weight

[0032] 100 parts of rapeseed oil and 35 parts of maleic anhydride monomer were added to the three-necke...

Embodiment 2

[0037] (1) Preparation of aminated graphene, in parts by weight

[0038] 10 parts of graphene oxide and a certain amount of organic solvent were added to a 500 mL round-bottomed flask equipped with a nitrogen protection device, mechanical stirring and a constant pressure dropping funnel, and ultrasonically dispersed for 1.0 h; 25 parts of triethylamine were added, and 35 parts of hexachlorocyclotriphosphorus cyanide diluted with organic solvent was added dropwise to the reaction solution, and the reaction was carried out at 60 °C for 6 h; then 35 parts of p-phenylenediamine were added dropwise to the system, and the reaction was carried out at 60 °C for 10 h; Filtration, washing with absolute ethanol, and vacuum drying to obtain aminated graphene;

[0039] (2) Preparation of grease-maleic anhydride copolymer, in parts by weight

[0040] Add 100 parts of rapeseed oil and 35 parts of maleic anhydride monomer into a three-necked flask, heat up to 60 ℃ under stirring conditions t...

Embodiment 3

[0045] (1) Preparation of aminated graphene, in parts by weight

[0046] 10 parts of graphene oxide and a certain amount of organic solvent were added to a 500 mL round-bottomed flask equipped with a nitrogen protection device, mechanical stirring and a constant pressure dropping funnel, and ultrasonically dispersed for 1.0 h; 16 parts of pyridine were added, and organic 35 parts of hexachlorocyclotriphosphorus cyanide diluted with solvent was added dropwise to the reaction solution, and the reaction was carried out at 60 °C for 6 h; then 30 parts of ethylenediamine were added dropwise to the system, and the reaction was carried out at 60 °C for 10 h; Washing with water ethanol and vacuum drying to obtain aminated graphene;

[0047] (2) Preparation of grease-maleic anhydride copolymer, in parts by weight

[0048] Add 100 parts of soybean oil and 35 parts of maleic anhydride monomers into the three-necked flask, heat up to 60 °C under stirring to make maleic anhydride and soyb...

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Abstract

The invention discloses a graphene-based inflaming retarding leather fat mixture and a preparation method thereof. The method includes the steps that oxidized graphene is reacted with phosphonitrilicchloride trime at first and then is reacted with diamine to produce aminated graphene; then a grease-maleic anhydride copolymer is prepared through free radical polymerization of maleic anhydride andgrease; afterwards, the aminated graphene is added into the copolymer, anhydride bonds and amino groups are reacted to produce a graphene-based grease-maleic anhydride midbody; and the midbody is neutralized and then is dispersed into water so that the leather fat mixture can be prepared. Modified graphene is connected with molecular chains of grease-maleic anhydride copolymer through covalent bonds, and the synthetic product has good dispersion uniformity and stability. The graphene-based inflaming retarding leather fat mixture is used for fat liquoring of leather, and the softness and inflaming retarding effect of the leather can be effectively reinforced; and meanwhile, the antistatic, ageing resistant, tearing resistant and antibacterial properties and the like are also improved to a certain extent, and the finished product level and international competitiveness of leather products can be improved.

Description

technical field [0001] The invention belongs to the technical field of leather chemicals, in particular to a graphene-based flame-retardant leather fatliquor and a preparation method thereof. Background technique [0002] Fatliquor is one of the main raw materials in the leather production process. By fatliquoring, lubricating the leather fibers and preventing the leather fibers from being hardened and broken, the raw leather can have ideal subsequent processability, and the leather has good physical and mechanical properties and sensory properties such as corresponding extensibility, elasticity, toughness and softness. performance. Animal and vegetable oils and fats are important raw materials for the preparation of leather fatliquors. Most of the natural oils and fats can be used to prepare leather fatliquors. At the same time, compared with petrochemical products, natural oils and fats, as a renewable resource, are getting more and more attention. [0003] With the dive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 范浩军张振宇陈意颜俊
Owner SICHUAN UNIV
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