Method for preparing lipophilic spherical zinc oxide dry powder by ultrasonic wet grinding

A wet grinding, zinc oxide technology, applied in chemical instruments and methods, dyed low molecular organic compound treatment, dyed high molecular organic compound treatment and other directions, can solve the problems of powder adhesion, difficult application, difficult dispersion, etc. Good hydrophobicity and lipophilicity

Active Publication Date: 2020-06-19
介休市博创纳米材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, zinc oxide powders prepared by wet methods such as liquid-phase chemical precipitation and existing sand mill grinding methods are mostly needle-shaped, rod-shaped, and flower-shaped, and zinc oxide powders with perfect spherical structures are rarely seen; although The existing technology can prepare spherical zinc oxide powder by sintering at high temperature, but the obtained powder will still stick together or agglomerate into a larger spherical shape, making it difficult to disperse in the later stage, and also does not have lipophilic effect , it is difficult to apply to various lipophilic polymer matrix materials

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  • Method for preparing lipophilic spherical zinc oxide dry powder by ultrasonic wet grinding
  • Method for preparing lipophilic spherical zinc oxide dry powder by ultrasonic wet grinding
  • Method for preparing lipophilic spherical zinc oxide dry powder by ultrasonic wet grinding

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specific Embodiment 1-6

[0030] Carry out the preparation of lipophilic spherical zinc oxide dry powder according to the formula described in table 1 with the following steps:

[0031] 1) Dissolving the dispersed coupling agent in Table 1 in a solvent to form a dispersed coupling agent solution;

[0032] 2) Put the dispersed coupling agent solution obtained in 1), the primary zinc oxide powder and deionized water to form a mixed solution, and then place it in an emulsifier for emulsification and dispersion for a certain period of time to obtain a pre-dispersion;

[0033] 3) Put the pre-dispersed liquid obtained in 2) in an ultrasonic sand mill for grinding to obtain a grinding liquid, the filling rate of zirconium beads in the sand mill is 20%-80%, the grinding time is 4h-8h, and the grinding temperature is not higher than 50 °C, the grinding speed is 100rpm-1500rpm, and the ultrasonic frequency is 25KHZ-130KHZ, wherein the ultrasonic sand mill is a sand mill using an ultrasonic vibrating rod.

[003...

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Abstract

The invention discloses a method for preparing lipophilic spherical zinc oxide dry powder through ultrasonic wet grinding. The method comprises the following steps: emulsifying and dispersing a dispersing coupling agent dissolving solution, primary zinc oxide powder and deionized water by using an emulsifying machine; carrying out ultrasonic wet grinding by adopting an ultrasonic sand mill to reduce the particle size of the primary zinc oxide powder while spheroidize the powder; and finally drying the diluted grinding liquid into zinc oxide dry powder by adopting a centrifugal dryer or a spraydryer. According to the method, primary zinc oxide powder can be spheroidized under the low-temperature condition while the surface of the primary zinc oxide powder is filled and coated with a dispersing coupling agent, so that the spherical powder formed after drying is good in hydrophobicity and lipophilicity, can float on the water surface and can be widely applied to various oleophylic polymer matrix materials.

Description

technical field [0001] The invention relates to a method for preparing zinc oxide dry powder, in particular to a method for preparing lipophilic spherical zinc oxide dry powder by ultrasonic wet grinding, and belongs to the technical field of zinc oxide powder preparation. Background technique [0002] Zinc oxide is an oxide of zinc. It is insoluble in water but soluble in acid and strong alkali. It can be widely used in plastics, silicate products, synthetic rubber, lubricants, paints, ointments, adhesives, Food, battery, flame retardant and other products are being produced. Among them, zinc oxide micropowder (particle size 0.1-10 μm) is a new type of inorganic functional material developed in recent years. Compared with ordinary zinc oxide, it has many special properties, such as bactericidal, fluorescent, piezoelectric, absorbing and scattering ultraviolet rays ability, etc., so that it has important application value in fine ceramics, coatings, cosmetics, rubber indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/04C09C3/04C09C3/08C09C3/10C08K9/04C08K3/22C08K7/18
CPCC08K3/22C08K7/18C08K9/04C08K2003/2296C09C1/043C09C3/006C09C3/041C09C3/08C09C3/10
Inventor 常彬彬廖宇涛杨光林郭英鹏邢宇许鸿胜
Owner 介休市博创纳米材料科技有限公司
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