Transparent zinc oxide liquid phase dispersion preparing method

A transparent zinc oxide, liquid-phase dispersion technology, applied in the chemical industry, can solve problems such as poor compatibility, and achieve the effects of easy operation, enhanced mass transfer, and good stability

Active Publication Date: 2018-11-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method adopts a high-gravity rotating packed bed, which can greatly enhance mass transfer and micro-mixing. The morphology of the prepared zinc oxide particles is controllable and the particle size distribution is uniform. The transparent zinc oxide particles prepared by this method are further modified. The solid content of the zinc oxide liquid phase dispersion can reach 70wt%, the zinc oxide crystal particle size is small and evenly distributed, and the one-dimensional size is 3-10nm; in addition, the product has good dispersion effect and good stability, and there is no sedimentation after standing for several months. And water and various organic solvents are used as the liquid phase dispersion medium, which has a wide range of applications; this method solves the problem of poor dispersion performance and compatibility of nano-zinc oxide in the application, thus endowing the product with higher application performance and added value

Method used

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  • Transparent zinc oxide liquid phase dispersion preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A kind of preparation of transparent zinc oxide liquid phase dispersion, comprises the steps:

[0054] 1) Add 1000 g of zinc acetate methanol mixed solution A with a mass concentration of 11% into the reactant storage tank A, stir and dissolve and heat to 70° C.; add 1000 g of potassium hydroxide ethanol mixed solution B with a mass concentration of 5.26% into the reactant storage tank In tank B, stir to dissolve and heat to 45°C;

[0055] 2) Turn on the circulating water at 70°C to heat the bed body of the supergravity rotary bed. After the temperature stabilizes, turn on the rotary bed and adjust the rotation speed to 1800rpm; turn on the feed pump, and the feed flow rate is 200ml / min, and the two reactants are simultaneously transported to React in a rotating bed;

[0056] 3) After the feeding of mixed solution A and mixed solution B is completed, all the suspension obtained from the reaction flows out of the supergravity rotating device and enters the modified tank...

Embodiment 2

[0060] A kind of preparation of transparent zinc oxide liquid phase dispersion, comprises the steps:

[0061] 1) Add 1000 g of zinc acetate and 0.4% gallium nitrate methanol mixed solution A with a mass concentration of 8% into the reactant storage tank A, stir and dissolve and heat to 50°C; Add 1000g of B into the reactant storage tank B, stir and dissolve at room temperature;

[0062] 2) Turn on the circulating water at 50°C to heat the bed body of the supergravity rotary bed. After the temperature stabilizes, turn on the rotary bed and adjust the rotation speed to 1000rpm; turn on the feed pump, and the feed flow rate is 500ml / min, and the two reactants are simultaneously transported to React in a rotating bed;

[0063] 3) After the zinc salt solution and lye are fed, all the suspension obtained from the reaction flows out of the supergravity rotating device and enters the modified tank, then closes the supergravity rotating device, and gradually adds 24g of mixing coating...

Embodiment 3

[0067] A kind of preparation of transparent zinc oxide liquid phase dispersion, comprises the steps:

[0068] 1) Add 1000 g of zinc acetate and 0.4% gallium nitrate methanol mixed solution A with a mass concentration of 8% into the reactant storage tank A, stir and dissolve and heat to 50°C; Add 1000g of B into the reactant storage tank B, stir and dissolve at room temperature;

[0069] 2) Turn on the circulating water at 50°C to heat the bed body of the supergravity rotary bed. After the temperature stabilizes, turn on the rotary bed and adjust the rotation speed to 1000rpm; turn on the feed pump, and the feed flow rate is 500ml / min, and the two reactants are simultaneously transported to React in a rotating bed;

[0070] 3) After the zinc salt solution and lye are fed, all the suspension obtained from the reaction flows out of the supergravity rotating device and enters the modified tank, then close the supergravity rotating device, and gradually add butyl titanate to the m...

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Abstract

The invention discloses a transparent zinc oxide liquid phase dispersion preparing method. The transparent zinc oxide liquid phase dispersion preparing method comprises the following steps of 1) dissolving salt into a liquid phase medium A to obtain a salt solution, and dissolving alkali into a liquid phase medium B to obtain an alkaline solution, wherein the salt is zinc salt of mixed zinc salt,specifically, the mixed zinc salt is obtained by mixing zinc salt and doping elements at a molar ratio of 10-100:1; 2) filling the salt solution and the alkaline solution into a supergravity rotatingpacked bed reactor for reaction at a certain temperature to obtain a zinc oxide suspension; 3) adding surface coating agent into the zinc oxide suspension for modifying coating at a certain temperature for a period of time; 4) settling, centrifuging, washing and then dispersing the stood modified solution into a liquid phase medium C to obtain a transparent zinc oxide liquid phase dispersion. Thetransparent zinc oxide liquid phase dispersion preparing method is completed inside the supergravity rotating packed bed reactor to greatly strengthen mass transfer and micro-mixing; the prepared transparent zinc oxide liquid phase dispersion is transparent and good in dispersibility and stability and has no precipitation when being stood for more than 12 months.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a preparation method of a liquid phase dispersion, in particular to a method for preparing a transparent zinc oxide liquid phase dispersion. Background technique [0002] As an important inorganic nanomaterial, nano-zinc oxide research started in the 1990s. Zinc oxide is widely used nowadays. In addition to being widely used in the rubber industry, petrochemical industry, and paint industry, it can also be used in electronic laser materials, phosphor additives, magnetic materials, piezoelectric materials, ceramics, etc. In the rubber industry, nano-zinc oxide is an important inorganic active material, which can not only reduce the amount of ordinary zinc oxide, but also improve the wear resistance and anti-aging properties of rubber products, and prolong the service life; in the coating industry, nano-zinc oxide Zinc can greatly improve the hiding power and tinting power ...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y40/00
CPCC01G9/02C01P2002/72C01P2002/84C01P2004/04C01P2004/64
Inventor 陈建峰黄谢君曾晓飞
Owner BEIJING UNIV OF CHEM TECH
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