A nano-rod-shaped magnesium hydroxysilicate/molybdenum disulfide composite material and its preparation method and application
A magnesium hydroxysilicate and nanorod-like technology, applied in the field of nanomaterials, can solve the problems of not preparing magnesium hydroxysilicate and molybdenum disulfide nano-powder, etc., and achieve the effects of high hardness, reduced wear and strong plastic deformation resistance.
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Embodiment 1
[0039] 1) Weigh 5.481 g of magnesium chloride hexahydrate and 10.224 g of sodium silicate nonahydrate, add 100 ml of deionized water during stirring, and then add 3 g of sodium hydroxide to adjust the pH of the solution to 13.
[0040] 2) The well-stirred mixture was put into the autoclave, heated to 200°C, and kept for 24 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reactant is taken out for washing, suction filtration, drying and grinding to obtain nano-rod-shaped magnesium hydroxysilicate powder.
[0041] 3) 0.6 g of magnesium hydroxysilicate powder obtained in step 2) was added to 120 ml of deionized water, and 2.8 g of sodium molybdate and 4.15 g of thiourea were added during continuous magnetic stirring. The well-stirred mixture was placed in an autoclave, heated to 220° C., and kept for 48 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reactant ...
Embodiment 2
[0043] 1) Weigh 2.85 g of magnesium chloride and 4.88 g of sodium metasilicate, add 100 ml of deionized water during stirring, and then add 3 g of sodium hydroxide to adjust the pH of the solution to 13.
[0044] 2) The uniformly stirred mixture was put into the autoclave, heated to 200° C., and kept for 12 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reactant is taken out for washing, suction filtration, drying and grinding to obtain nanometer magnesium hydroxysilicate powder.
[0045] 3) 0.6 g of magnesium hydroxysilicate powder obtained in step 2) was added to 120 ml of deionized water, and 5.6 g of sodium molybdate and 8.3 g of thiourea were added during continuous magnetic stirring. The well-stirred mixture was placed in an autoclave, heated to 220° C., and kept for 48 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reactant is taken out for washin...
Embodiment 3
[0047] 1) Weigh 5.481 g of magnesium chloride hexahydrate and 5.112 g of sodium silicate nonahydrate, add 100 ml of deionized water during stirring, and then add 3 g of sodium hydroxide to adjust the pH of the solution to 13.
[0048] 2) The uniformly stirred mixture was put into the autoclave, heated to 180° C., and kept for 24 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reactant is taken out for washing, suction filtration, drying and grinding to obtain nanometer magnesium hydroxysilicate powder.
[0049] 3) 1.2 g of magnesium hydroxysilicate powder obtained in step 2) was added to 120 ml of deionized water, and 2.8 g of sodium molybdate and 4.15 g of thiourea were added during continuous magnetic stirring. The well-stirred mixture was charged into an autoclave, heated to 220° C., and kept for 24 hours. After the reaction time is over, the temperature in the kettle is lowered to room temperature and the reacta...
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