A kind of modified carbon nanotube ionic liquid layered liquid crystal lubricant and preparation method thereof
A technology of ionic liquid and lamellar liquid crystal, which is applied in the field of lubrication, can solve the problems of leakage and crawling that have not been effectively solved, achieve a good balance, improve dispersion and lubricity, and reduce the effect of crawling and leakage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Example 1: Preparation of modified carbon nanotubes
[0030] Weigh 0.5 g of carbon nanotubes and place them in a mixed solution of 50 mL of sulfuric acid / nitric acid (v / v 3:1) for ultrasonic dispersion for 1 h, then reflux in a water bath at 80 °C for 4 h, filter, and repeatedly wash with a large amount of deionized water and acetone until The filtrate was neutral, dried and ground; the ground carbon nanotubes were placed in 50mL SOCl 2 In the middle, ultrasonic treatment for 0.5h, using DMF as catalyst, stirring and refluxing at 80 ° C for 2h, filtering, drying, grinding for use; according to the mass ratio of carbon nanotube:stearyl alcohol=1:5, respectively weigh the treated Carbon nanotubes and stearyl alcohol were placed in a DMF solution, ultrasonically dispersed for 0.5 h, stirred and refluxed at 80° C. for 24 h, filtered, washed, and dried to obtain stearyl alcohol-modified carbon nanotubes.
Embodiment 2
[0031] Example 2: Preparation of 0.05% S-CNT ionic liquid layered liquid crystal lubricant
[0032] Weigh 0.1 g of Brij30 into a 100 mL beaker to obtain an aqueous solution of 0.1 wt % Brij30; then add 50 mg of the modified carbon nanotubes in Example 1 to the solution, and sonicate the mixture in an ultrasonic cleaner for 24 hours to finally obtain Uniform black dispersion. According to the mass ratio Brij30 / BP304 / H 2 O=55:13:32, use carbon nanotube dispersion instead of water to weigh, then mix uniformly at about 70°C, centrifuge and stir, and repeat the two steps to fully mix the sample. The carbon nanotube ionic liquid layered liquid crystal lubricant is obtained by placing the temperature in a constant temperature box at (25±0.1)° C. for more than two weeks to achieve equilibrium.
Embodiment 3
[0033] Example 3: Preparation of 0.1% S-CNT ionic liquid layered liquid crystal lubricant
[0034] Weigh 0.1 g of Brij30 into a 100 mL beaker to obtain an aqueous solution of 0.1 wt % Brij30; then add 100 mg of the modified carbon nanotubes in Example 1 to the solution, and sonicate the mixture in an ultrasonic cleaner for 24 hours to finally obtain Uniform black dispersion. According to the mass ratio Brij30 / BP304 / H 2 O=55:13:32, the carbon nanotube dispersion liquid was used instead of water for weighing, and the remaining steps were the same as those in Example 2.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More