A kind of environment-friendly lamellar potassium magnesium calcium phosphate base lubricating grease and preparation method thereof
A technology of potassium-magnesium-calcium-phosphate grease and calcium-based grease, which is applied in the field of lubrication, can solve the problems of easy residue of ionic liquid, unfavorable industrial production, high cost of material synthesis, etc., achieve good load-bearing and anti-wear ability, and simple preparation method Ease of implementation and cost reduction
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Embodiment 1
[0024] First, put 40.0 g of refined white oil, 20.0 g of 12-hydroxystearic acid, and 0.5 g of calcium hydroxide cream into the kettle, heat up to 130°C for saponification for 30 minutes, control the free acid and base to pass, pass water to cool down, and increase the stirring speed Carry out hydration until the material visibly thickens into fat, add 0.1 g of 2,6-di-tert-butyl-p-cresol, stir for 10 min after changing the phase, add 40.0 g of refined white oil to adjust the cone penetration, and grind it evenly with a three-roller machine After that, the basic calcium-based grease is obtained.
[0025] Add raw materials 0.75 g magnesium chloride, 1.36 g potassium dihydrogen phosphate and 4.9 g potassium acetate into a 30 mL polytetrafluoroethylene stainless steel kettle, and react in 10 mL aqueous solution. Temperature 150 ℃, react for 5 days, filter, wash with distilled water, and dry at room temperature to obtain layered potassium magnesium phosphate MgKPO 4 ·H 2 O. figur...
Embodiment 2
[0028] First put 47.5 g of PAO8, 5.0 g of stearic acid, and 6.0 g of calcium hydroxide cream into the kettle, raise the temperature to 140°C for saponification for 40 minutes, control the free acid and base to pass the standard, pass water to cool down, and increase the stirring speed for hydration until The material thickens obviously into grease, add 0.05 g of methyl propyl disulfide, stir for 20 minutes after changing the phase, add PAO8 to adjust the cone penetration, and grind evenly with a three-roller machine to obtain the basic calcium-based grease.
[0029] Add raw materials 0.21 g magnesium acetate, 2.28 g dipotassium hydrogen phosphate and 1.74 g potassium sulfate into a 30 mL polytetrafluoroethylene stainless steel kettle, and react in 1.8 mL aqueous solution. Temperature 300 ℃, react for 0.1 day, filter, wash with distilled water, and dry at room temperature to obtain layered potassium magnesium phosphate MgKPO 4 ·H 2 O.
[0030] Choose layered potassium magnesi...
Embodiment 3
[0032] First put 45.0 g of epoxy soybean oil, 10.0 g of 12-hydroxystearic acid, and 2.0 g of calcium hydroxide cream into the kettle, raise the temperature to 135°C for saponification for 35 minutes, control the free acid and alkali to pass, pass water to cool down, and increase stirring Hydrate at a high speed until the material becomes visibly thickened into fat, add 5.0 g of dilauryl thiodipropionate, stir for 15 minutes after changing the phase, add 45.0 g of epoxy soybean oil to adjust the cone penetration, and grind it evenly with a three-roller machine. Get basic calcium-based grease.
[0033] Add raw materials 0.3 g magnesium sulfate, 3.4 g potassium dihydrogen phosphate and 0.7 g potassium hydroxide into a 30 mL polytetrafluoroethylene stainless steel kettle, and react in 15 mL aqueous solution. Temperature 25 ℃, react for 10 days, filter, wash with distilled water, and dry at room temperature to obtain layered potassium magnesium phosphate MgKPO4 ·H 2 O.
[0034] C...
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