Graphene/lanthanum borate/kaolin composite lubricating oil additive
A lubricating oil additive, lanthanum borate technology, applied in the field of lubricating oil, can solve the problems of easy aggregation and sedimentation, low friction coefficient, low enough, etc., and achieve the effect of easy-to-obtain raw materials, simple preparation process, and green and environmental protection in the preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] (1) Prepare 160 g of an aqueous dispersion of graphene oxide with a concentration of 0.025 wt%, add 6 mL of silane coupling agent (A-1100), and stir at room temperature for 1 h. Finally, it was transferred to a flask and reacted at 80°C for 2h. After separation and washing, an appropriate amount of water is added to obtain an aqueous dispersion of functional graphene oxide.
[0028] (2) Weigh 10g of lanthanum nitrate and add 50mL of distilled water to dissolve to obtain a lanthanum nitrate solution; weigh 12g of borax and add 50mL of water to fully dissolve it, then raise the temperature to 80°C and keep it at a constant temperature, and then add lanthanum nitrate solution and 6mL of silane coupling agent (A -1100), constant temperature stirring reaction 2h. The modified lanthanum borate is obtained after separation and cleaning.
[0029] (3) Take 0.04g of modified lanthanum borate and 0.16g of kaolin and the above-mentioned functional graphene oxide aqueous dispersio...
Embodiment 2
[0033] (1) Prepare 160 g of an aqueous dispersion of graphene oxide with a concentration of 0.025 wt %, add 1 mL of silane coupling agent (A-1110), and react at 25° C. for 5 h. After separation and washing, an appropriate amount of water is added to obtain an aqueous dispersion of functional graphene oxide.
[0034] (2) Weigh 10g of lanthanum nitrate and add 50mL of distilled water to dissolve to obtain a lanthanum nitrate solution; weigh 5g of borax and add 50mL of water to fully dissolve it, then heat up to 60°C and keep it at a constant temperature, then add lanthanum nitrate solution and 3mL of silane coupling agent (A -1110), constant temperature stirring reaction 5h. The modified lanthanum borate is obtained after separation and cleaning.
[0035] (3) Mix 0.1g of modified lanthanum borate and 0.02g of kaolin with the above-mentioned functional graphene oxide aqueous dispersion and stir for 0.5h; transfer to a high-pressure reactor for 1h of hydrothermal reaction at 200°...
Embodiment 3
[0039] (1) Prepare 160 g of a graphene oxide ethanol dispersion with a concentration of 0.025 wt%, add 8 mL of silane coupling agent (A-1120), and reflux at 80° C. for 1 h. After separation and cleaning, an appropriate amount of ethanol is added to obtain an ethanol dispersion of functional graphene oxide.
[0040] (2) Weigh 10g of lanthanum nitrate and add 50mL of distilled water to dissolve to obtain a lanthanum nitrate solution; weigh 20g of borax and add 50mL of water to fully dissolve it, then heat up to 90°C and keep the constant temperature, then add lanthanum nitrate solution and 10mL of silane coupling agent (A -1120), constant temperature stirring reaction 1h. The modified lanthanum borate is obtained after separation and cleaning.
[0041](3) Mix 0.16g of modified lanthanum borate and 0.32g of kaolin with the above-mentioned ethanol dispersion of functional graphene oxide and stir for 2 hours; reflux at 100°C for 5 hours, separate and wash to obtain graphene / lantha...
PUM
| Property | Measurement | Unit |
|---|---|---|
| hardness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More