A kind of good oil-soluble nanoscale dendrimer fluorescent compound and its preparation method and application
A technology of fluorescent compounds and dendrimer molecules, which is applied in the field of nano-scale dendrimer molecule fluorescent compounds to achieve the effects of good anti-wear performance, excellent extreme pressure performance and good wear-resistant effect
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Embodiment 1
[0049] The preparation of magnetic nano-scale polyamide-amine fluorescent compound (n=0, m=3, p=9) with Fe3O4&SiO2 as the core, the reaction process is as follows figure 1 Shown:
[0050] (1) Add 0.1mol / L FeC12·4H2O solution and 0.2mol / L FeC13·6H2O solution (volume ratio 2:1) into the first container, place it in (30±1)℃ ultrasonic reactor, 0.1 mol / L NaOH solution was added dropwise with ultrasound until the pH of the solution was 12, and the magnetic particles were separated by using a magnetic field. The magnetic particles are washed with deionized water until the pH of the washing solution is 7, and black Fe3O4 nanoparticles can be obtained.
[0051] (2) Weigh 18.4g of Fe3O4 nanoparticles and disperse them in absolute ethanol (100mL), add a few drops of oleic acid, and then ultrasonically disperse for 10 minutes; transfer the dispersed solution into a second container, and add 20.8g orthosilicon Ethyl acetate (TEOS) and 7gNH3·H2O were stirred for 3 hours; after the reacti...
Embodiment 2
[0072] Preparation of OG PAMAM nanoscale polyamide-amine fluorescent compound (m=1, P=18) with SiO2 as the core.
[0073] (1) Take by weighing 5g of core-shell formula SiO2 Nanoparticles are placed in a flask, drop 20mL volume concentration of 10% silane coupling agent (KH550 3-aminopropyltriethoxysilane) toluene solution, at a temperature of 50 Under the condition of ℃, react for 60 minutes, after cooling down to room temperature, filter under reduced pressure, wash with methanol, and then dry in a vacuum oven at 70 ℃ for 12 hours.
[0074] (3) Place 5 grams of the product obtained after silanization in a second container, slowly add 20 mL of a 30% (volume percent) methanol solution of methyl acrylate dropwise, and stir for 90 minutes at a temperature of 60° C. After cooling down to room temperature, it was filtered under reduced pressure, washed with methanol, and dried. Take 5.8 grams and place it in a flask, add 20 mL of 30% (volume percent) methanol solution of ethylened...
Embodiment 3
[0091] The 4G magnetic nano-scale polyamide-amine fluorescent compound (n=4, m=2, P=8) with Fe3O4&SiO2 as the core is used as a magnetic nano-antiwear agent for gasoline engine lubricating oil according to the formula in Table 1, using 4G respectively Magnetic nanoscale polyamide-amine fluorescent compound (n=4, m=2, P=8) as 4G magnetic nano antiwear agent A, common organic molybdenum salt antiwear agent (such as dialkyl disulfide in the market at present) Molybdenum phosphate), the deployment of SM 5W-30 gasoline engine lubricants.
[0092] Table 1 SM 5W-30 gasoline engine lubricating oil
[0093]
[0094] Note: A* contains anti-wear additives, and anti-wear additives refer to zinc dialkyldithiophosphate (ZnDDP).
[0095] The analysis results of SM 5W-30 gasoline engine lubricating oil are shown in Table 2:
[0096] Table 2 Analysis results of SM 5W-30 gasoline engine lubricating oil
[0097]
[0098] Note: M* friction pair mode: ball and disc, test conditions: 50hz,...
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