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Nano hydroxyl magnesium silicate powder and preparation method thereof

A technology of hydroxymagnesium silicate and powder, which is applied in chemical instruments and methods, petroleum industry, inorganic pigment treatment, etc. It can solve the problems affecting product quality and commerciality, poor powder consistency, and limited use, etc., and achieves convenient operation , Purity improvement, and the effect of prolonging the service life

Inactive Publication Date: 2009-03-18
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of nano-scale powder additives, among which the performance of hydroxymagnesium silicate powder is very good, but the existing hydroxymagnesium silicate powder mainly comes from natural silicate minerals, such as magnesium silicate ore powder, It is prepared by ball milling with dispersant, stabilizer, etc., but because natural silicate minerals contain Al 2 o 3 , FeO, MnO, CaO, K 2 O and other impurities, and the composition and content of different ore blocks are different, the consistency of the prepared powder is poor, and the existing mechanical pulverization method to prepare hydroxymagnesium silicate powder can only reach submicron level, but the existing Even if the disclosed mechanical ball milled ore block has a fineness of nanometer level, its purity is very low, which affects its product quality and commerciality, and limits the use of this material in lubricating oil

Method used

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  • Nano hydroxyl magnesium silicate powder and preparation method thereof
  • Nano hydroxyl magnesium silicate powder and preparation method thereof
  • Nano hydroxyl magnesium silicate powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Raw material ratio:

[0039] Diatomaceous earth 10g (5%)

[0040] Magnesium Sulfate 30g (15%)

[0041] Sodium Hydroxide 20g (10%)

[0042] Sodium Peroxide 140g (70%)

[0043] Specific preparation method:

[0044] (1) Magnesium sulfate is put into drying oven and dried at 200 DEG C for 2 hours to remove crystal water;

[0045] (2) Sodium hydroxide is prepared into a supersaturated strong alkali solution of 1g / ml, then the diatomite, magnesium sulfate and sodium peroxide are added to the supersaturated strong alkali solution of sodium hydroxide successively and mixed uniformly, And add ball mill in ball mill for 10 hours;

[0046] (3) The mixed solution after ball milling is centrifuged at a centrifugal speed of 5000 rpm for 30 minutes. After filtration, the dry matter is dried at 200°C for 2 to 3 hours, and finally prepared into nano-hydroxymagnesium silicate powder .

[0047] Product performance testing:

[0048] The nanometer hydroxymagnesium silicate powder th...

Embodiment 2

[0050] Raw material ratio:

[0051] Diatomaceous earth 20g (20%)

[0052] Magnesium Sulfate 25g (25%)

[0053] Sodium Hydroxide 10g (10%)

[0054] Sodium Peroxide 45g (45%)

[0055] Specific preparation method:

[0056] (1) Magnesium sulfate is put into drying oven and dried at 200 DEG C for 2 hours to remove crystal water;

[0057] (2) Sodium hydroxide is prepared into a supersaturated strong alkali solution of 1g / ml, then the diatomite, magnesium sulfate and sodium peroxide are added to the supersaturated strong alkali solution of sodium hydroxide successively and mixed uniformly, And add ball mill in ball mill for 10 hours;

[0058](3) The mixed solution after ball milling is centrifuged at a centrifugal speed of 5000 rpm for 45 minutes. After filtration, the dry matter is dried at 200°C for 2 to 3 hours, and finally prepared into nano-hydroxymagnesium silicate powder .

[0059] Product performance testing:

[0060] The nanometer hydroxymagnesium silicate powder tha...

Embodiment 3

[0062] Raw material ratio:

[0063] Diatomaceous earth 10g (10%)

[0064] Magnesium Sulfate 15g (15%)

[0065] Sodium Hydroxide 20g (20%)

[0066] Sodium peroxide 55g (55%)

[0067] Specific preparation method:

[0068] (1) Magnesium sulfate is put into drying oven and dried at 200 DEG C for 2 hours to remove crystal water;

[0069] (2) Sodium hydroxide is prepared into a supersaturated strong alkali solution of 1g / ml, then the diatomite, magnesium sulfate and sodium peroxide are added to the supersaturated strong alkali solution of sodium hydroxide successively and mixed uniformly, And add ball mill in ball mill for 10 hours;

[0070] (3) The mixed solution after ball milling is centrifuged at a centrifugal speed of 5000 rpm for 60 minutes, and the filtered dry matter is dried at 200°C for 2 to 3 hours, and finally prepared into nano-hydroxymagnesium silicate powder .

[0071] Product performance testing:

[0072] The nanometer hydroxymagnesium silicate powder that th...

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Abstract

The invention discloses a nanometer hydroxy magnesium metasilicate powder body which is prepared from the following raw materials: 5 to 20 percent of diatomite, 15 to 25 percent of magnesium sulfate, 10 to 20 percent of sodium hydroxide and 45 to 70 percent of sodium dioxide. The particle diameter of the nanometer hydroxy magnesium metasilicate powder body is less than or equal to 100 nanometers,thereby really reaching the nanometer level. The nanometer hydroxy magnesium metasilicate powder body is used as an additive of a lubricating oil product, can substantially improve the antiwear and antifriction performances, the lubricating oil product has self-repairing function, and the nanometer hydroxy magnesium metasilicate powder body remarkably prolongs the service life of motion friction of mechanical equipment.

Description

technical field [0001] The invention relates to a magnesium acid powder, in particular to a nano-hydroxy magnesium silicate powder and a preparation method thereof. Background technique [0002] Most mechanical equipment needs lubricating oil to lubricate its parts during operation. However, some lubricating oils are difficult to meet the needs of lubricating mechanical equipment under harsh conditions, and do not have the self-repairing function of metal wear surfaces during operation. At present, in order to improve the anti-wear and anti-friction properties of existing lubricating oils, organic or inorganic functional additives are mainly added to improve their lubricating properties. However, the use of such chemical additives is easy to corrode mechanical equipment made of metals, especially those made of non-ferrous metals. In view of the defects of the above-mentioned prior art, the research on nano-scale powder additives has been greatly developed. There are many ...

Claims

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Application Information

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IPC IPC(8): C09C3/00C09C1/28C10M159/12
Inventor 许一徐滨士王晓丽史佩京
Owner ACADEMY OF ARMORED FORCES ENG PLA
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