Oleylamine modified nano agins 2 Applications
An oleylamine, nanotechnology, applied in the application field as a lubricant additive, to achieve the effect of excellent tribological properties, good oil solubility, anti-friction performance and anti-wear performance improvement
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Embodiment 1
[0026] Step 1: Add 30 mL of oleylamine to a 100 mL three-necked flask, add 340 mg of silver nitrate (2.0 mmol), 584 mg of indium acetate (2.0 mmol), blow nitrogen for 20 min, stir and heat to 60 °C until the solid dissolves, and the solution clarify. Raise the temperature to 80°C, and quickly inject 8 mL of organic sulfur (a mixture of 1.0 mL dodecylmercaptan + 7.0 mL tert-dodecylmercaptan). After injection, observe the color change of the solution (from colorless to light yellow), keep the temperature for 10 minutes, heat to 210°C, and react for 1 hour. Cool to room temperature after the reaction. Add 20 mL of n-hexane to the reaction solution, centrifuge the supernatant and add 50 mL of ethanol to precipitate the product, centrifuge the mixture at 7,000 rpm for 10 min, and dry the precipitate in vacuum to obtain oleylamine-modified AgInS 2 nanoparticles.
[0027] Step 2: Oleylamine-modified AgInS 2 Nanoparticles were added into liquid paraffin, prepared into solutions wi...
Embodiment 2
[0038] The AgInS prepared by embodiment 1 2 Nanoparticles were added to PAO10, prepared into a dispersion system with a concentration of 0.5%, ultrasonically dispersed for 20 minutes, and its tribological properties were comprehensively evaluated.
[0039] (1). The SRV-V micro-vibration friction and wear testing machine produced by German Optimol Company was used to test the dispersion system of the product of Example 1 in PAO10 with a test concentration of 0% and 0.5% respectively at 25 ° C, a frequency of 25 Hz, and an amplitude of 1 mm. Friction coefficient f when the load is 25N and the long grinding is 30 min. The steel ball used in the experiment is GCr15 bearing steel with Φ=10mm, and the next sample is GCr15 steel block with Φ=24×7.9mm. The results are shown in the appendix Figure 8 . Depend on Figure 8 It can be seen that at 25 °C, compared with the blank polyalphaolefin PAO10, the addition of oleylamine modified AgInS 2 The coefficient of friction is greatly red...
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