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Preparation method of polyacrylate/flower-like hollow zinc oxide composite leather finishing agent

The technology of polyacrylate and leather finishing agent is applied in the field of preparation of composite leather finishing agent, which can solve the problems of limitation, reduction of hygienic performance, influence on the comfort of leather products, etc., and achieve excellent water resistance and mechanical properties, good hygienic performance, The effect of preventing irregular fusion

Active Publication Date: 2017-11-17
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polyacrylate is dense in film formation, and forms a dense film on the leather surface after finishing, which blocks the passage of human water vapor molecules to diffuse to the outside world, resulting in reduced hygienic performance and affecting the wearing comfort of leather products, which limits its further application. Therefore it is necessary to modify the polyacrylate finishing agent to provide a novel polyacrylate composite leather finishing agent containing inorganic nanomaterials

Method used

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  • Preparation method of polyacrylate/flower-like hollow zinc oxide composite leather finishing agent
  • Preparation method of polyacrylate/flower-like hollow zinc oxide composite leather finishing agent
  • Preparation method of polyacrylate/flower-like hollow zinc oxide composite leather finishing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0032] 1) Preparation of flower-shaped hollow zinc oxide

[0033] Dissolve 0.3g of zinc acetate dihydrate, 1.0g of citric acid and 0.30g of PVP (polyvinylpyrrolidone) in 50mL of deionized water, adjust the pH value of the system to 11 with 0.5mol / L aqueous sodium hydroxide solution, and place in an ultrasonic cleaner Stir for 30 minutes and ultrasonic water bath for 60 minutes to obtain a uniform milky white solution; then transfer it to a 100mL polytetrafluoroethylene reactor, react for 10 hours under 180°C hydrothermal conditions, and finally cool the reactant to room temperature, discharge the material, and pass through centrifugation, After drying, the flower-shaped hollow zinc oxide can be obtained.

[0034] 2) Preparation of polyacrylate / flower-shaped hollow zinc oxide composite leather finishing agent

[0035] Disperse 0.132g of flower-shaped hollow zinc oxide in 15g of deionized water with an ultrasonic power of 400W, ultrasonic 10s and 1s pause, and the total ultraso...

Embodiment 2

[0037] 1) Preparation of flower-shaped hollow zinc oxide

[0038] Dissolve 0.2g of zinc acetate dihydrate, 1.0g of citric acid and 0.18g of PVP in 60mL of deionized water, adjust the pH value of the system to 12 with 1.0mol / L sodium hydroxide aqueous solution, stir in an ultrasonic cleaner for 30min while ultrasonically bathing After 60 minutes, a uniform milky white solution was obtained; then it was transferred to a 100mL polytetrafluoroethylene reactor, and reacted under hydrothermal conditions at 200°C for 8 hours, and finally the reactant was cooled to room temperature, and the material was discharged, centrifuged and dried to obtain the flower hollow zinc oxide.

[0039] 2) Preparation of polyacrylate / flower-shaped hollow zinc oxide composite leather finishing agent

[0040] Disperse 0.198g of flower-shaped hollow zinc oxide in 10g of deionized water with an ultrasonic power of 400W and an intermittent ultrasonic dispersion of 10s for 1s. The total ultrasonic dispersion...

Embodiment 3

[0046] 1) Preparation of flower-shaped hollow zinc oxide

[0047] Dissolve 0.3g of zinc acetate dihydrate, 1.2g of citric acid and 0.20g of Pluronic F127 in 65mL of deionized water, adjust the pH value of the system to 12 with 1.5mol / L sodium hydroxide aqueous solution, stir for 30min, and transfer to the ultrasonic cell Ultrasonic treatment in a pulverizer for 60 minutes to obtain a uniform milky white solution; then transfer it to a 100mL polytetrafluoroethylene reactor, react under hydrothermal conditions of 220°C for 6 hours, and finally cool the reactant to room temperature, discharge, and centrifuge and drying to obtain flower-shaped hollow zinc oxide.

[0048] 2) Preparation of polyacrylate / flower-shaped hollow zinc oxide composite leather finishing agent

[0049] Disperse 0.264g of flower-shaped hollow zinc oxide in 15g of deionized water by using an intermittent ultrasonic method with an ultrasonic power of 400W and an ultrasonic interval of 10s for 1s. The total ult...

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Abstract

The invention discloses a preparation method of a polyacrylate / flower-like hollow zinc oxide composite leather finishing agent. Octan zinecnaty, citric acid and a surfactant are dissolved in deionized water, the pH value is adjusted to 11-13, a hydrothermal reaction is conducted, and flower-like hollow zinc oxide is obtained; flower-like hollow zinc oxide is subjected to uniform ultrasonic dispersion in the deionized water, and a suspension of flower-like hollow zinc oxide is obtained and then added to a polyacrylate emulsion to be blended, and the polyacrylate / flower-like hollow zinc oxide composite leather finishing agent is obtained. The steam permeability, the breathability, the water resistance, the tensile strength, the elongation at break, the tear strength and the breaking strength of leather samples finished by the prepared composite finishing agent are improved at different degrees.

Description

technical field [0001] The invention relates to a preparation method of a composite leather finishing agent, in particular to a preparation method of a polyacrylate / flower-shaped hollow zinc oxide composite leather finishing agent, which can be applied to the leather finishing process. Background technique [0002] With the rapid development of characterization methods and analysis techniques, nanomaterials have become one of the hot subjects. Compared with ordinary materials, nanomaterials have many different properties, such as small size effect, quantum effect, surface effect, and macroscopic quantum tunneling effect. Among them, hollow nanomaterials have attracted much attention due to their large internal cavity, low density, and large specific surface area, and have been widely used in catalysis, biology, energy, and coatings. At present, many scientific researchers have prepared a series of nano-oxides with hollow structures, such as TiO 2 , CuO, ZnO, SiO 2 、Co 3 ...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12C01G9/02
Inventor 鲍艳高璐封彩萍马建中张文博
Owner SHAANXI UNIV OF SCI & TECH