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Preparation method for stably suspended and dispersed nano-zinc oxide slurry

A nano-zinc oxide, dispersed and stable technology, applied in the direction of cosmetic preparations, skin care preparations, cosmetics, etc., can solve the problems of easy agglomeration of nano-zinc oxide, and achieve the effect of solving the problem of agglomeration, preventing sedimentation, and reducing use

Active Publication Date: 2017-03-29
扬州市维纳复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that nano-zinc oxide is easy to agglomerate, the present invention provides a method for preparing nano-zinc oxide slurry with stable suspension dispersion

Method used

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  • Preparation method for stably suspended and dispersed nano-zinc oxide slurry
  • Preparation method for stably suspended and dispersed nano-zinc oxide slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh 4.144g of calcium hydroxide and 125mL of water into the reactor and stir, heat to 60°C and start to feed CO with a flow rate of 0.3L / min 2 Gas, after reacting for 10 minutes, add 22.4g of nano-zinc oxide, stop the reaction when the pH is 7, then filter, take the solid phase and dry to obtain calcium carbonate-loaded nano-zinc oxide.

[0029] (2) Weigh 28g calcium carbonate-loaded nano-zinc oxide, 2.8g attapulgite, 68.66g water, 0.14g dispersant SN-5040 and 0.4g defoamer, disperse evenly on a high-speed disperser, and then sand mill for 3 hours to obtain nano Zinc oxide paste.

[0030] The nano-zinc oxide prepared in this embodiment is uniformly dispersed and does not agglomerate, and its microscopic appearance is shown in the attached figure 1 .

Embodiment 2

[0032] (1) Weigh 17.76g of calcium hydroxide powder, put 125mL of water into the reactor and stir, heat to 20°C and start to introduce CO with a flow rate of 0.5 L / min 2 Gas, after reacting for 10 minutes, add 24g of nano-zinc oxide, stop the reaction when the pH is 6, then filter, take the solid phase and dry to obtain calcium carbonate-loaded nano-zinc oxide.

[0033] (2) Weigh 48g of calcium carbonate-loaded nano-zinc oxide, 1.6g of attapulgite, 48.44g of water, 0.96g of dispersant SN-5040 and 1g of defoamer, disperse evenly on a high-speed disperser, and then sand mill for 3 hours to obtain nano-zinc oxide Zinc paste. The obtained nano-zinc oxide slurry has the same effect as that of Example 1.

Embodiment 3

[0035] (1) Weigh 2.55g of calcium hydroxide powder, put 125mL of water into the reactor and stir, heat to 80°C and start to introduce CO with a flow rate of 0.2L / min 2 Gas, after reacting for 10 minutes, add 34.55g of nano-zinc oxide, stop the reaction when the pH is 8, then filter, take the solid phase and dry to obtain calcium carbonate-loaded nano-zinc oxide.

[0036] (2) Weigh 38g of calcium carbonate-loaded nano-zinc oxide, 2g of attapulgite, 59.12g of water, 0.38g of dispersant SN-5040 and 0.5g of defoamer, disperse evenly on a high-speed disperser, and then sand mill for 3 hours to obtain nano-zinc oxide Zinc paste. The obtained nano-zinc oxide slurry has the same effect as that of Example 1.

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Abstract

The invention discloses a preparation method for stably suspended and dispersed nano-zinc oxide slurry, and relates to the technical field of semiconductor material production. The method comprises the steps of firstly, adding nano-zinc oxide in a process of preparing calcium carbonate by adopting a gas-solid reaction, and obtaining monodisperse nano-zinc oxide loaded to the surface of calcium carbonate of a submicrometer structure after calcium carbonate is completely generated; and secondly, taking attapulgite clay as anti-settling, thixotropic and thickening agents, and performing sanding to obtain a target product. According to the method, a nano-zinc oxide dispersion modification technology is successfully formed, and the stably suspended and dispersed nano-zinc oxide slurry is further prepared, so that the difficult problem of aggregation of nano-zinc oxide in use is radically solved.

Description

technical field [0001] The invention relates to the technical field of semiconductor material production, in particular to a method for preparing nanometer metal oxides. Background technique [0002] Nano-zinc oxide is a new type of wide bandgap compound semiconductor material. It is a direct wide bandgap oxide of the II-VI group with unique optical and electrical properties. It is used in antibacterial materials, luminescent materials, piezoelectric materials, ultraviolet shielding Cleaning materials, cell calibration materials and nanocatalysts have very broad application prospects. It can be widely used in sunscreen cosmetics, architectural coatings and antibacterial fibers and other fields. However, nano-zinc oxide is an inorganic oxide, which has special properties such as small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect, which make its surface energy extremely high, surface activity extremely high, and polarity extremely ...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09J11/04A61K8/27A61Q17/04
CPCA61K8/27A61Q17/04C09D7/61C09D7/62C09J11/04
Inventor 朱爱萍张翠翠姜云龙张星河
Owner 扬州市维纳复合材料科技有限公司
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