A kind of layered potassium phosphate calcium sodium base lubricating grease composition and preparation method thereof
A technology of potassium calcium phosphate sodium base grease and sodium base grease, applied in the field of lubrication, can solve problems such as impurity symbiosis, and achieve the effects of good compatibility, abundant raw material sources, and simple and easy preparation method
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Embodiment 1
[0026] Add 30.0 g of 100SN and 10.0 g of 12-hydroxystearic acid to the fat-making kettle, heat up and melt, and slowly add 25.0 g of sodium hydroxide aqueous solution (concentration: 20%) at a temperature of 80 °C. After adding the sodium hydroxide solution, control the temperature at 110°C and saponify for about 3 hours; raise the temperature to 170°C for dehydration, and observe that the material in the kettle gradually thickens and becomes viscous and silky, indicating that the water has basically been removed; Measure the content of free acid and base at 160 ℃ to control it at 0.2%; then slowly add 60.0 g of 100SN, continue heating to 200 ℃ for thickening, add 0.05 g of 2,6-di-tert-butyl p-cresol , 6.0 g alkenyl succinic acid and 6.0 g T321, continue to heat up to the highest refining temperature, when the materials in the kettle become a true solution state, keep warm for 5 min. Rapidly cool to around 100°C and homogenize using a triple roll machine to obtain basic sodium...
Embodiment 2
[0032] Add 31.7 g of PAO10 and 5.0 g of stearic acid to the fat-making kettle, heat up and melt, and slowly add 2.5 g of sodium hydroxide aqueous solution (concentration: 20%) at a temperature of 90 °C. After adding the sodium hydroxide solution, the temperature is controlled at 100°C, and the saponification is about 4 hours; the temperature is raised to 170°C for dehydration, and when the material in the kettle is observed to gradually thicken and appear viscous and drawn, it means that the water has basically been removed; 160 Measure the free acid-base content at ℃ to control it at 0.15%; then slowly add 63.3 g of PAO10, continue heating to 190 ℃ for thickening, add 5.0 g of β-naphthol, 1.0 g of dodecenylbutane and 1.0g ZDDP, continue to heat up to the highest refining temperature, when the material in the kettle is in a true solution state, keep it warm for 10 min. Rapidly cool to around 100°C and use a five-roller to homogenize to obtain basic sodium-based grease B.
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Embodiment 3
[0038] Add 21.7 g of PAO8 and 35.0 g of 12-hydroxystearic acid to the fat-making kettle, heat up and melt, and slowly add 8.0 g of sodium hydroxide aqueous solution (concentration: 35%) at a temperature of 85 °C. After adding the sodium hydroxide solution, control the temperature at 105 °C and saponify for about 3.5 hours; raise the temperature to 155 °C for dehydration, and observe that the material in the kettle gradually thickens and becomes viscous and drawn, indicating that the water has basically been removed; Measure the content of free acid and base at 160 °C to control it within the range of 0.19 %; then slowly add 63.3 g of PAO8, continue heating to 195 °C for thickening, add 4.0 g of phenothiazine, 2.0 g of benzotri Nitroxazole and 1.0 g ZDDP, continue to heat up to the highest refining temperature, when the material in the kettle is in a true solution state, keep warm for 6 min. Rapidly cool to around 100 ℃ and homogenize using a triple roll machine to obtain basic...
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