Basalt nanosheet and preparation method thereof

A technology of basalt and nanosheets, applied in nanotechnology, silicate, grain processing, etc., to achieve the effect of avoiding process, excellent dielectric properties and chemical resistance, and simple and effective methods

Active Publication Date: 2022-05-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, adding basalt scales to the resin can also produce a special "labyrinth effect", which has good shielding performance and excellent acid and alkali resistance. There are many studies on the application of fibers in composite materials, but as a new type of material, basalt scales, especially the preparation method of basalt nanosheets, there are no relevant reports in China.

Method used

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  • Basalt nanosheet and preparation method thereof
  • Basalt nanosheet and preparation method thereof
  • Basalt nanosheet and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] A preparation method of basalt nanosheets, comprising the following steps:

[0037](1) Surface etching of basalt scales: Weigh a certain amount of basalt scales and place them in a three-neck flask, add hydrochloric acid solution (HCl) to it, and the dosage ratio of basalt scales and hydrochloric acid solution (HCl) is 0.4g: 30mL , the concentration of the hydrochloric acid solution was 4moL / L, and mechanically stirred at a stirring rate of 1000rpm for 12h under the condition of a water bath at 25°C for surface etching reaction. After the reaction, filter and wash to neutrality (pH test paper test), and dry in an oven at 60°C for 12 hours to obtain preliminary surface-etched basalt scales.

[0038] (2) Depth etching of basalt scales: take a certain amount of preliminary surface etched basalt scales and place them in a three-neck flask, add a configured HF solution with a mass fraction of 1.5wt% therein, and initially surface etched basalt scales The dosage ratio of bas...

Embodiment 2

[0042] A preparation method of basalt nanosheets, comprising the following steps:

[0043] (1) Surface etching of basalt scales: Weigh a certain amount of basalt scales and place them in a three-neck flask, add hydrochloric acid solution (HCl) to it, and the dosage ratio of basalt scales and hydrochloric acid solution (HCl) is 0.4g: 30mL , the concentration of hydrochloric acid solution is 4moL / L, and the stirring speed is 500rpm under the condition of 25°C water bath, and the surface etching reaction is carried out by mechanical stirring for 6h. After the reaction, filter and wash to neutrality (pH test paper test), and dry in an oven at 60°C for 12 hours to obtain preliminary surface-etched basalt scales.

[0044] (2) Depth etching of basalt scales: Weigh a certain amount of preliminary surface-etched basalt scales and place them in a three-necked flask, add a configured HF solution with a mass fraction of 0.1wt% therein, and initially surface-etch basalt scales. The dosage...

Embodiment 3

[0048] A preparation method of basalt nanosheets, comprising the following steps:

[0049] (1) Surface etching of basalt scales: Weigh a certain amount of basalt scales and place them in a three-neck flask, add hydrochloric acid solution (HCl) to it, and the dosage ratio of basalt scales and hydrochloric acid solution (HCl) is 0.4g: 30mL , the concentration of the hydrochloric acid solution was 4moL / L, and mechanically stirred at a stirring rate of 1500rpm under the condition of a 60°C water bath for 24h to carry out the surface etching reaction. After the reaction, filter and wash to neutrality (pH test paper test), and dry in an oven at 60°C for 12 hours to obtain preliminary surface-etched basalt scales.

[0050] (2) Depth etching of basalt scales: Weigh a certain amount of preliminary surface-etched basalt scales and place them in a three-neck flask, add a configured HF solution with a mass fraction of 0.6 wt% therein, and initially surface-etch basalt scales. The dosage ...

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Abstract

The invention provides a basalt nanosheet and a preparation method thereof, and the preparation method comprises the following steps: by using basalt scales as raw materials, carrying out preliminary surface etching through hydrochloric acid to remove part of metal oxides and impurities on the surface of the basalt scales, so that a rough structure is formed on the surface of the basalt scales; further, low-concentration hydrofluoric acid enters the interior through the porous structure to be further corroded, so that wrinkles are formed on the surface and the interior of the basalt scale, and then the wrinkles fall off under the action of mechanical force to form the basalt nanosheet. The invention provides a simple and feasible method for preparing the basalt nanosheet, and the obtained basalt nanosheet has large specific surface area and good acid and alkali resistance and corrosion resistance, can be used in the anticorrosion fields of petrochemical industry, marine ships, bridges, buildings and the like, especially has stable high and low temperature resistance, and is suitable for industrial production. And the material has excellent dielectric property and chemical resistance, so that the material has a very strong development prospect in the field of national defense and military industry.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials, and relates to a basalt nanosheet and a preparation method thereof. Background technique [0002] Basalt scale is a new type of scale material. It is a new type of material processed by selecting natural basalt ore with excellent performance through special processes such as high-temperature melting, clarification, homogenization, and screening. It presents a transparent or dark green sheet structure, and its thickness is generally between About 3 μm, the size is generally between 25 μm and 3mm. Due to the high content of iron oxide, titanium dioxide, aluminum oxide, and calcium oxide in basalt scales and the low content of alkaline oxides, basalt scales can not only produce a shielding effect, but also have unique advantages in acid and alkali resistance and corrosion resistance. At present, there are only some practical applications in very limited fields s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26B02C19/00B82Y40/00
CPCC01B33/26B02C19/0056B82Y40/00C01P2004/64C01P2004/03
Inventor 张美云宋顺喜戢德贤赵俊帆聂景怡谭蕉君杨斌
Owner SHAANXI UNIV OF SCI & TECH
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