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Leather greasing agent endowing leather with function of shielding ultraviolet ray and preparation method thereof

A technology of leather fatliquor and ultraviolet rays, applied in the direction of small raw hide/big raw hide/leather/fur treatment, leather impregnation, small raw hide/big raw hide/leather skin/fur chemical treatment, etc., to achieve the effect of avoiding phase separation

Inactive Publication Date: 2015-02-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of single nano-TiO 2 Or nano-ZnO preparation of leather processing aids has been related research, but the use of nano-TiO 2 There are few reports on the preparation of leather processing aids (leather fatliquor) by -ZnO composite particles

Method used

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  • Leather greasing agent endowing leather with function of shielding ultraviolet ray and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Nano TiO 2 - Preparation and modification of ZnO composite particles:

[0034] Add 100mL of 1mol / L titanium tetrachloride solution and 1L of 2mol / L urea solution into a 75°C three-neck flask equipped with a reflux condenser, a stirring device and a temperature control device, and react in a constant temperature water bath for 2 hours;

[0035] Add 100mL of 5mol / L zinc chloride solution and 1mL of 1mol / L surfactant solution, raise the temperature to 90°C and react for 2h to obtain a white precipitate, which is centrifuged, washed, dried at 60°C for 24h in vacuum, and placed in a muffle furnace at 500°C Calcined for 2h to get nano-TiO 2 - ZnO composite particles;

[0036] Then 0.5g nano-TiO 2 -ZnO composite particles, 70mL of absolute ethanol and 5mL of water were added to a three-necked flask at 60°C, stirred for 30 minutes, adjusted to pH 9, and 25mL of absolute ethanol dissolved with 0.02g of modifier was slowly added dropwise, reacted in a constant temperat...

Embodiment 2

[0043] Step 1: Nano TiO 2 - Preparation and modification of ZnO composite particles:

[0044] Add 100mL of 1mol / L titanium tetrachloride solution and 1L of 2mol / L urea solution into a 76°C three-neck flask equipped with a reflux condenser, a stirring device and a temperature control device, and react in a constant temperature water bath for 2 hours;

[0045] Add 100mL of 4mol / L zinc chloride solution and 1mL of 1mol / L surfactant solution, raise the temperature to 90°C and react for 2h to obtain a white precipitate, which is centrifuged, washed, dried at 60°C for 24h in vacuum, and placed in a muffle furnace at 600°C Calcined for 2h to get nano-TiO 2 - ZnO composite particles;

[0046] Then 0.5g nano-TiO 2 -ZnO composite particles, 70mL of absolute ethanol and 5mL of water were added to a three-necked flask at 60°C, stirred for 30 minutes, adjusted to a pH of 9.5, and 25mL of absolute ethanol dissolved with 0.04g of modifier was slowly added dropwise, reacted in a constant t...

Embodiment 3

[0053] Step 1: Nano TiO 2 - Preparation and modification of ZnO composite particles:

[0054] Add 100mL of 1mol / L titanium tetrachloride solution and 1L of 2mol / L urea solution into a 77°C three-necked flask equipped with a reflux condenser, a stirring device and a temperature control device, and react in a constant temperature water bath for 2 hours;

[0055] Add 100mL of 3mol / L zinc chloride solution and 1mL of 1mol / L surfactant solution, raise the temperature to 90°C for 2h to obtain a white precipitate, centrifuge, wash, dry at 60°C for 24h in vacuum, and place in a muffle furnace at 700°C Calcined for 2h to get nano-TiO 2 - ZnO composite particles;

[0056] Then 0.5g nano-TiO 2 -ZnO composite particles, 70mL of absolute ethanol and 5mL of water were added to a three-necked flask at 60°C, stirred for 30 minutes, adjusted to pH 9, and 25mL of absolute ethanol dissolved with 0.06g of modifier was slowly added dropwise, reacted in a constant temperature water bath for 30mi...

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Abstract

The invention relates to a leather greasing agent endowing leather with a function of shielding ultraviolet ray and a preparation method thereof. At present, leather processing aid develops in the direction of being environment-friendly, degradable and functional. The leather greasing agent disclosed by the invention is prepared by the following steps: preparing TiO2-ZnO composite nanoparticles by virtue of a precipitation method, carrying out hydrophobic modification by virtue of a modifier and introducing the nanoparticles to a hydrogenated castor oil matrix; and carrying out succinic acid esterification and sulfonation, thus finally preparing the hydrogenated castor oil-based nano-TiO2-ZnO composite leather greasing agent. The greasing agent disclosed by the invention, on the basis of excellent ultraviolet ray shielding performance of the TiO2-ZnO composite nanoparticles, can endow the greased leather sample with the function of shielding ultraviolet ray; and meanwhile, by virtue of a 'bridged linkage' function between an organic group on the surfaces of the TiO2-ZnO composite nanoparticles and the hydrogenated castor oil matrix, an inorganic-organic phase separation phenomenon is improved.

Description

technical field [0001] The invention relates to a leather fatliquoring agent and a preparation method thereof, in particular to a leather fatliquoring agent for endowing leather with the function of shielding ultraviolet rays and a preparation method thereof. Background technique [0002] Leather and its products not only have the functions of resisting cold, keeping warm and beautifying life, but also have strong plasticity, and become the first choice for fashionable people to dress themselves up. Leather and its products have a very soft and comfortable feel no matter in the hot summer or in the cold winter, which is mainly due to the fatliquoring process in the tanning process. At present, with the improvement of the country's environmental protection requirements for tannery enterprises, leather processing auxiliaries are also developing in the direction of green, environmental protection, degradability and functionalization. The raw materials of leather fatliquor are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/04
CPCC14C9/02
Inventor 马建中段力民鲁娟吕斌段徐宾张健康谈墩旭
Owner SHAANXI UNIV OF SCI & TECH
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