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Method for preparing high-dispersibility zinc oxide granules and colloid thereof

A technology of zinc oxide particles and high dispersion, applied in chemical instruments and methods, zinc oxide/zinc hydroxide, colloid chemistry, etc., can solve the problems of high cost and unfavorable mass production, and achieve uniform particle size and raw material The effect of low cost and mild reaction conditions

Inactive Publication Date: 2009-09-30
上海西源新能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of highly dispersed zinc oxide by the above-mentioned additive method will generally increase the cost significantly, which is not conducive to industrial mass production

Method used

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  • Method for preparing high-dispersibility zinc oxide granules and colloid thereof
  • Method for preparing high-dispersibility zinc oxide granules and colloid thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Get 2000 grams of deionized water, join in the reactor that reflux condenser is housed, add 20 grams of zinc nitrate hexahydrate, start the stirrer until all dissolve; Take by weighing 5.4 grams of sodium hydroxide and join in 2000 grams of deionized water, start Stirrer until completely dissolved; weigh 2 grams of lecithin and dissolve it in 1000 grams of deionized water, start the stirrer and heat up to 80°C until completely dissolved; the above solution zinc nitrate hexahydrate solution and sodium hydroxide were respectively mixed at 400ml / h Add it into the lecithin solution at a high speed, keep the reaction temperature at 80°C, and react for 2 hours after the addition; the reaction solution is filtered to obtain a white precipitate, which is washed 5 times with 200ml deionized water, and then washed with 50ml absolute ethanol for 2 hours. Second-rate. It was then dried at 100°C for 5 hours. That is, zinc oxide powder is obtained.

[0035] The scanning electron mi...

Embodiment 2

[0038] Get 2000 grams of deionized water, join in the reactor that reflux condenser is housed, add 60 grams of zinc nitrate hexahydrate, start the stirrer to dissolve completely; Take by weighing 16.2 grams of sodium hydroxide and join in 2000 grams of deionized water, start Stirrer until completely dissolved; weigh 2 grams of lecithin and dissolve it in 1000 grams of deionized water, start the stirrer and heat up to 80°C, until completely dissolved; the above solution zinc nitrate hexahydrate solution and sodium hydroxide were mixed at 400ml / h Add it into the lecithin solution at a high speed, keep the reaction temperature at 80°C, and react for 2 hours after the addition; the reaction solution is filtered to obtain a white precipitate, which is washed 5 times with 200ml of deionized water, and then washed with 50ml of absolute ethanol for 2 Second-rate. It was then dried at 100°C for 5 hours. That is, zinc oxide powder is obtained.

[0039] The particle size of the obtaine...

Embodiment 3

[0042]Get 2000 grams of deionized water, join in the reactor that reflux condenser is housed, add 20 grams of zinc nitrate hexahydrate, start the stirrer until all dissolve; Take 5.4 grams of sodium hydroxide and join in 2000 grams of deionized water, start Stirrer until completely dissolved; weigh 0.2 g of esterified modified starch and dissolve it in 1000 g of deionized water, start the stirrer and heat up to 80 ° C until completely dissolved; the above solution zinc nitrate hexahydrate solution and sodium hydroxide were respectively mixed with 400 ml Add it into the lecithin solution at a rate of / h, keep the reaction temperature at 80°C, and react for 2 hours after the addition; the reaction solution is filtered to obtain a white precipitate, which is washed 5 times with 200ml deionized water, and then separated with 50ml absolute ethanol. Wash 2 times. It was then dried at 100°C for 5 hours. That is, zinc oxide powder is obtained.

[0043] The particle size of the obtai...

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Abstract

The invention relates to a method for preparing high-dispersibility zinc oxide granules, which comprises the following steps: (1) dissolving soluble zinc salt into deionized water, and stirring the mixture to prepare 0.1 to 10 percent of zinc salt solution in percentage by mass; (2) dissolving alkali in the deionized water according to a molar ratio of the zinc salt to the alkali of 1:2 to prepare alkali solution; (3) dissolving hydrophilic emulsifying agent of which adding amount is 0.5 to 20.0 percent of the mass of the zinc salt into the deionized water; (4) at a temperature of between 20 and 90 DEG C, fully stirring the emulsifying agent solution, adding the zinc salt solution and the alkali solution into the emulsifying agent solution drop by drop to obtain white precipitate, and filtering and separating the white precipitate; and (5) washing the separated white precipitate, drying the washed white precipitate at a temperature of between 40 and 120 DEG C to obtain zinc oxide powder, dispersing the zinc oxide powder into water by ultrasound, and adding 0.1 to 10 percent of stabilizing agent to obtain zinc oxide sol. Compared with the prior art, the method has the advantages that the preparation cost is low, and the size and shape of the zinc oxide granules are easy to control; and the prepared zinc oxide granules have even grain diameter and high dispersibility and do not have the problem of agglomeration.

Description

technical field [0001] The present invention relates to a preparation method of highly dispersible zinc oxide particles, and further, the present invention also relates to a preparation method of highly dispersible zinc oxide colloid. Background technique [0002] ZnO has many excellent properties, such as ZnO itself is non-toxic and harmless to the human body, transparent in visible light and can absorb ultraviolet rays, and has a large electromechanical coupling coefficient. Taking advantage of its wonderful properties in light, electricity, magnetism, sensitivity, etc., nano-zinc oxide will not only replace ordinary zinc oxide in traditional application fields such as rubber industry, paint industry, ceramic industry, etc., but also show in today's eye-catching high-tech fields. It has broad application prospects, such as gas alarms, ultraviolet filters, high-efficiency catalysts, environmental purification, short-wavelength lasers, solar cells, surface acoustic waves, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B01J13/00
Inventor 郭建军刘雪辉程昱川李勇许高杰崔平
Owner 上海西源新能源技术有限公司
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