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Oil-soluble nano-magnesium silicate hydroxide and preparation method thereof

A hydroxy magnesium silicate, oil-soluble technology, applied in the field of chemistry, can solve the problem that natural serpentine powder cannot stably disperse base oil, etc., and achieve the effects of easy industrial scale-up production, uniform scale and simple steps

Active Publication Date: 2017-07-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a method for preparing oil-soluble magnesium hydroxysilicate, the prepared magnesium hydroxysilicate is nanoparticles, uniform in size, and can be stably dispersed in base oil, solving the problem of natural snake The problem that the grain stone powder cannot be stably dispersed in the base oil

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  • Oil-soluble nano-magnesium silicate hydroxide and preparation method thereof
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Examples

Experimental program
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Effect test

Embodiment 1

[0049] Utilize the method for the embodiment of the present invention to synthesize oil-soluble nano-hydroxy magnesium silicate, the specific process is as follows:

[0050] 1) Weigh 2.05g of sodium nitrate, 0.41g of sodium silicate, and 10.3g of sodium hydroxide and dissolve them in 200ml of water, and stir evenly;

[0051] 2) The above mixed solution was heated to 180 degrees and kept for 24 hours, then cooled to room temperature to obtain a white liquid;

[0052] 3) Centrifuge the above white liquid to obtain a white precipitate, which is dissolved in water and ethanol to wash the white precipitate alternately;

[0053] 4) Weigh 2.0 g of the white precipitate and dissolve it in 15 ml of ethanol, heat to 70 degrees, add 0.1 g of SG-SiF17 silane coupling agent dropwise, stir, react for 2 hours, cool to room temperature, and obtain a white liquid;

[0054] 5) centrifuging the white liquid obtained in step 4) to obtain a white precipitate;

[0055] 6) Washing the white precip...

Embodiment 2

[0057] Utilize the method for the embodiment of the present invention to synthesize oil-soluble nano-hydroxy magnesium silicate, the specific process is as follows:

[0058] 1) Weigh 2.05g of sodium nitrate, 0.82g of sodium silicate, and 20.5g of sodium hydroxide and dissolve them in 200ml of water, and stir evenly;

[0059] 2) The above mixed solution was heated to 200 degrees and kept for 21 hours, then cooled to room temperature to obtain a white liquid;

[0060] 3) Centrifuge the above white liquid to obtain a white precipitate, which is dissolved in water and ethanol to wash the white precipitate alternately;

[0061] 4) Weigh 2.0 g of the white precipitate and dissolve it in 15 ml of ethanol, heat to 70 degrees, add 0.4 g of SG-Si187 silane coupling agent dropwise, stir, react for 1.5 hours, cool to room temperature, and obtain a white liquid;

[0062] 5) centrifuging the white liquid obtained in step 4) to obtain a white precipitate;

[0063] 6) Washing the white prec...

Embodiment 3

[0065] Utilize the method for the embodiment of the present invention to synthesize oil-soluble nano-hydroxy magnesium silicate, the specific process is as follows:

[0066] 1) Weigh 2.05g of sodium nitrate, 1.23g of sodium silicate, and 30.8g of sodium hydroxide and dissolve them in 200ml of water, and stir evenly;

[0067] 2) The above mixed solution was heated to 210 degrees and kept for 19 hours, then cooled to room temperature to obtain a white liquid;

[0068] 3) Centrifuge the above white liquid to obtain a white precipitate, which is dissolved in water and ethanol to wash the white precipitate alternately;

[0069] 4) Weigh 2.0 g of the white precipitate and dissolve it in 15 ml of ethanol, heat to 70 degrees, add 0.8 g of SG-Si191 silane coupling agent dropwise, stir, react for 1 hour, and cool to room temperature to obtain a white liquid;

[0070] 5) centrifuging the white liquid obtained in step 4) to obtain a white precipitate;

[0071] 6) Washing the white preci...

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Abstract

The invention discloses oil-soluble nano-magnesium silicate hydroxide and a preparation method thereof. The preparation method of the oil-soluble nano-magnesium silicate hydroxide includes the steps: dissolving magnesium nitrate, sodium silicate and sodium hydroxide in water to obtain first solution; heating and holding the first solution to obtain second solution; centrifuging the second solution to obtain an intermediate; coupling the intermediate and a coupling agent to obtain oil-soluble magnesium silicate hydroxide. The magnesium silicate hydroxide prepared by the method is nano-particles with uniform dimensions, the nano-particles can be stably dispersed in base oil, and the method solves the problem that natural serpentine powder cannot be stably dispersed in base oil.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to oil-soluble magnesium hydroxysilicate and a method for preparing oil-soluble magnesium hydroxysilicate. Background technique [0002] At present, organic additives are the most researched and applied in the field of lubricating base oil additives. In recent years, with the gradual deepening of research in the field of lubricating base oil additives, people have gradually discovered that many inorganic additives show unique properties, some of which are not even possessed by organic additives. However, an important problem in the application process of inorganic additives is that they are insoluble or difficult to dissolve in the base oil, and it is difficult to stably disperse in the base oil for a long time even in the presence of a dispersant. For example, the natural hydroxymagnesium silicate powder material developed by Jin Yuansheng et al. can generate a ceramic protective layer wi...

Claims

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Application Information

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IPC IPC(8): C01B33/22B82Y40/00B82Y30/00
CPCC01B33/22C01P2004/04C01P2004/13
Inventor 刘鹏霄刘宇宏金元生雒建斌
Owner TSINGHUA UNIV
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