A kind of trimellitate lubricating oil base oil based on block polyester chemical modification and preparation method thereof
A technology of trimellitic acid and ester lubricating oil, applied in the field of lubricating oil, can solve problems such as adverse effects of base oil low temperature performance, achieve the effects of improving biodegradability, ensuring high viscosity-temperature performance, and reducing adverse effects
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Embodiment 1
[0034] Block type P (CL-PO) modified TMT lubricant base oil synthesis method, its steps are as follows:
[0035] First, add 0.02mol tetrabutyl titanate (TBT) and 0.16mol δ-caprolactone (ε-CL) into a 250mL three-necked flask in a molar ratio, seal the glass stopper, react at 25°C for 2 hours, and then add 0.16mol of propylene oxide (PO), continue to react at room temperature for 24h; after the reaction finishes, a small amount of unreacted propylene oxide (PO) is removed under reduced pressure; then 40mL containing 10% (v / v) HCl solution is added to In the three-neck flask, the linear block polyester and solid TiO were obtained by hydrolysis reaction 2 , to be TiO 2 Stop the reaction when it is no longer hydrolyzed; add 20mL of dichloromethane, then add the mixed system to the separatory funnel and let it stand for stratification; move the lower layer of linear polyester L-P (CL-PO) into the separatory funnel, Repeated washing with deionized water several times to remove hydr...
Embodiment 2
[0038] Block type P (CL-PO) modified TMT lubricant base oil synthesis method, its steps are as follows:
[0039] First, add 0.02mol tetrabutyl titanate (TBT) and 0.08mol δ-caprolactone (ε-CL) into a 250mL three-necked flask in a molar ratio, seal the glass stopper, react at 25°C for 2 hours, and then add 0.08mol of propylene oxide (PO), continue to react at room temperature for 24h; after the reaction is finished, a small amount of unreacted propylene oxide (PO) is removed under reduced pressure; then 40mL containing 10% (v / v) HCl solution is added to In the three-neck flask, the linear block polyester and solid TiO were obtained by hydrolysis reaction 2 , to be TiO 2 Stop the reaction when it is no longer hydrolyzed; add 20mL of dichloromethane, then add the mixed system to the separatory funnel and let it stand for stratification; move the lower layer of linear polyester L-P (CL-PO) into the separatory funnel, Repeated washing with deionized water several times to remove h...
Embodiment 3
[0044] Block type P (CL-VL) modified TMT nano lubricant base oil preparation method, its steps are as follows:
[0045] First, add 0.02mol tetrabutyl titanate (TBT) and 0.16mol δ-caprolactone (ε-CL) into a 250mL three-necked flask in a molar ratio, seal the glass stopper, react at 25°C for 2 hours, and then add 0.16mol δ-valerolactone (DVL), continue to react at room temperature for 6h; then add 40mL of 10% (v / v) HCl solution into the three-necked flask, and obtain linear block polyester and solid TiO by hydrolysis 2 , to be TiO 2 Stop the reaction when it is no longer hydrolyzed; add 20mL of dichloromethane, then add the mixed system to the separatory funnel and let it stand for stratification; move the lower layer of linear polyester L-P (CL-VL) into the separatory funnel, and Rinse with deionized water several times to remove hydrochloric acid in the solution until the pH value reaches neutral; then remove dichloromethane and deionized water under reduced pressure at 60°C ...
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