Novel nano powder surface treatment method

A nano-powder and surface treatment technology, which is applied in the field of new nano-powder surface treatment and SiO2 nano-powder surface treatment, can solve the problems of high cost and complicated process, and achieve low production cost, reduce the content of impurity ions, and gel The effect of density reduction

Inactive Publication Date: 2017-10-31
JIAXING LEIZHOU COMPOSITE MATERIALS CO LTD
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Problems solved by technology

However, in large-scale production, the above-mentioned measures are complex and costly.

Method used

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  • Novel nano powder surface treatment method
  • Novel nano powder surface treatment method
  • Novel nano powder surface treatment method

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Embodiment Construction

[0014] The present invention is a novel nano-powder surface treatment method. Taking the surface treatment of nano-silica powder material as an example, the micellar method is adopted to use cheap process water glass Na2SiO3 as raw material, such as figure 1 , figure 2 As shown; by adding different types of surfactants into the solution system, the aqueous solution with a certain concentration of 0.6mol / L is prepared according to the ratio of 2:1, and then the acetic acid solution with a certain concentration of 0.6mmol / L is added to form micelles , another anionic surfactant is added to the precipitant. The pH value of the precipitant system is in the range of 8.0~9.0 to form micelles, and the stirring device is fully stirred for 2 hours to make the Na2SiO3 micelle solution and the precipitant micelle solution undergo precipitation reaction, and the stirring speed is 250~4O0r / min , the reaction temperature is controlled at 50-55°C. Under the microenvironment where the preci...

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Abstract

The present invention relates to a new type of nano powder surface treatment method, which is characterized in that it includes using cheap technical water glass as raw material, adding different types of surfactants into the solution system by adopting micellar method to control the precipitation reaction The microenvironment makes the generated precipitation particles be back-wrapped, maintains a high degree of dispersion of the precipitation particles, prevents the aggregation and growth phenomenon between the particles, and prepares high-purity, spherical nanoparticle materials. A new nano-powder surface treatment method overcomes the hard agglomeration and uneven particle distribution that tend to occur when preparing nano-powders by traditional methods. It is an effective new method for preparing nano-powder materials with high purity, good shape and narrow particle size distribution.

Description

technical field [0001] The invention relates to a novel nano-powder surface treatment method, in particular to SiO2 nano-powder surface treatment, and belongs to the technical field of new materials. Background technique [0002] The development of modern high-tech not only puts forward requirements on the chemical composition of materials, but also has strict regulations on the shape of materials. The research, production and application development of high-purity and ultra-fine nano-materials is an important part of the modern high-tech field. With the continuous development of modern science and technology, the upsurge of research on high purity, high activity and ultrafine ceramic raw materials has also emerged as the times require. However, when the superfineness of the powder reaches the nanoscale (1-100nm), it is easy to cause the agglomeration (even hard agglomeration) of the ultrafine particles, thereby affecting the exertion of its advantages such as high activity...

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Application Information

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IPC IPC(8): C01B33/18B82Y40/00
CPCC01B33/186C01P2004/32C01P2004/64
Inventor 董文飞
Owner JIAXING LEIZHOU COMPOSITE MATERIALS CO LTD
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