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Preparation method of nanometer magnesium silicate hydroxide, and preparation method and application of anti-wear agent

A technology of magnesium hydroxysilicate and magnesium silicate, applied in the directions of magnesium silicate, silicate, additives, etc., can solve the problems such as synthesis and surface modification of sheet-like nano-magnesium hydroxysilicate that are not mentioned, and achieve a preparation method. Simple and feasible, strong operability, controllable synthesis effect

Active Publication Date: 2015-12-16
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0005] The application with the patent number CN103880027A discloses a hydroxymagnesium silicate nanotube anti-wear material and its preparation method. This technology does not mention the synthesis and surface modification of flake nano-hydroxymagnesium silicate

Method used

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  • Preparation method of nanometer magnesium silicate hydroxide, and preparation method and application of anti-wear agent
  • Preparation method of nanometer magnesium silicate hydroxide, and preparation method and application of anti-wear agent
  • Preparation method of nanometer magnesium silicate hydroxide, and preparation method and application of anti-wear agent

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preparation example Construction

[0033] Such as figure 1 As shown, the preparation method of the nano-hydroxymagnesium silicate according to the embodiment of the present invention comprises the following steps:

[0034] S1. Providing magnesium oxide and silicon dioxide in a predetermined mass ratio, and mixing the magnesium oxide and silicon dioxide with a sodium hydroxide solution of a predetermined concentration to obtain a mixed solution.

[0035] S2. Reacting the mixed solution at a predetermined temperature for a predetermined time to obtain a reacted mixed solution.

[0036] S3. Wash and filter the reacted mixed solution until the pH value of the reacted mixed solution is <8, and then filter to obtain a filtered product.

[0037] S4. Drying the filtered product to obtain the nano-hydroxymagnesium silicate.

[0038] Therefore, according to the preparation method of nano-hydroxy magnesium silicate according to the embodiment of the present invention, magnesium oxide and silicon dioxide are used as raw ...

Embodiment 1

[0060] Put 2.143g of magnesia and 2.143g of silicon dioxide into the container and mix thoroughly, add 200ml of deionized water and stir to dissolve with a magnetic heating stirrer, then add 5mol / L of sodium hydroxide titration solution and stir for 5 minutes, put put into the reaction kettle to heat, the heating temperature is set to 200°C, the reaction time is set to 12 hours, and the reaction product is obtained after cooling treatment; the reaction product is washed and filtered with deionized water until the pH value of the solution is less than 8, and the filtered The composition is placed in a drying device, the set temperature is 70°C, and after drying, a sheet-like nano-powder of magnesium hydroxysilicate is obtained, such as figure 2 with image 3 shown.

[0061] Depend on image 3 It can be seen that the embodiment of the present invention obtains lamellar nanoparticles, thereby realizing the controllable synthesis of hydroxymagnesium silicate nanoparticles.

Embodiment 2

[0063] Put 2.143g of magnesia and 2.143g of silicon dioxide into the container and mix thoroughly, add 200ml of deionized water and stir to dissolve with a magnetic heating stirrer, then add 6mol / L of sodium hydroxide titration solution and stir for 5 minutes, put put into the reaction kettle to heat, the heating temperature is set to 220°C, the reaction time is set to 72 hours, and the reaction product is obtained after cooling treatment; the reaction product is washed and filtered with deionized water until the pH value of the solution is less than 8, and the filtered The composition is placed in a drying device, the set temperature is 80°C, and after drying, the nano-powder of sheet-like magnesium hydroxysilicate is obtained, such as Figure 4 with Figure 5 shown.

[0064] Depend on Figure 5 It can be seen that tubular nanoparticles are obtained in the embodiment of the present invention, thereby realizing the controllable synthesis of hydroxymagnesium silicate nanopart...

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Abstract

The invention discloses a preparation method of nanometer magnesium silicate hydroxide, and a preparation method and an application of an anti-wear agent. The preparation method of nanometer magnesium silicate hydroxide comprises the following steps: 1, providing magnesium oxide and silica according to a predetermined mass ratio, and mixing magnesium oxide and silica with a predetermined concentration of a sodium hydroxide solution to obtain a mixed solution; 2, reacting the mixed solution at a predetermined temperature for a predetermined time to obtain a reacted mixed solution; 3, cleaning and filtering the reacted mixed solution until the pH value of the reacted mixed solution is smaller than 8, and filtering to obtain a filtration product; and 4, drying the filtration product to obtain the nanometer magnesium silicate hydroxide. The preparation method of the nanometer magnesium silicate hydroxide disclosed in the embodiment of the invention has the advantages of simplicity, feasibility, strong operability, and realization of the controllable synthesis of magnesium silicate hydroxide nanoparticles through controlling the reaction time.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, and more specifically, to a preparation method of nanometer hydroxymagnesium silicate, a preparation method of an anti-wear agent and its application in lubricating oil or grease. Background technique [0002] Magnesium hydroxysilicate is one of the main components of natural serpentine. The natural serpentine crushed to the micro-nano level can be used as a lubricating oil additive to improve the wear of mechanical parts, and even repair the worn parts of mechanical parts to a certain extent. However, natural serpentine has two major disadvantages. On the one hand, its composition is complex and its consistency is poor. Some impurities in it may even aggravate the wear of mechanical parts, resulting in poor stability of natural serpentine as a lubricating oil additive; on the other hand It is extremely difficult to obtain natural serpentine nanoparticles with nanoscale size and good consi...

Claims

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Application Information

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IPC IPC(8): C01B33/22C10M125/00C10M141/02C10M141/06C10N30/06
Inventor 常秋英常绍亮
Owner BEIJING JIAOTONG UNIV
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