Going to wikipedia to get Einstenian theories about the phenomena and shooting here is a way to stay above the people.
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I gather that Mola knew about Brownian motion long before Wikipedia went online.
Yep, I am older than soot.
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Mola: In the graphite example in the video, how would the dispersant/detergent package deal with graphite? We know it helps keep soot in suspension. How about that other form of carbon, graphite?
The detergent's role is to "lift" any deposits that might stick to surfaces.
The dispersant's role is to keep these deposits in suspension until drain time.
In doing so it does this:
1.) It Lowers the surface and interfacial energy of various polar species to prevent their adherence to metal surfaces.
(This is one of the reasons that formulating is such a sensitive balancing act between AW, FM,'s, and dispersants, which all compete for surfaces).
2.) Suspends aggregates in the bulk lubricant, if they are present.
3.) Modifying soot particles so as to prevent their
aggregation. Aggregation will lead to oil thickening. This means that the dispersant tends to keep the suspended particulates from "clumping."
4.) a dispersant associates with colloidal particles, thereby preventing them from grouping and falling out of solution.
Now on number 4.), if the particle is large and has a mass greater than any opposing Buoyancy force, the particle will still fall due to gravity.
So the dispersant will treat any particle as a foreign entity.
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By the way, I don't want one of your Wikipedia answers.
You're no fun!
In other words, the only mechanism that would keep low mass nano particles in suspension is the oil's own
dispersant.
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Ok, then, are you listening?
Huh? Are YOU listening.
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Where in the heck did you found that MOS2 [addes?] to LiquyMoly or Molycote are NANO SIZED PARTICLES? Maybe half micron at the smallest ones, but, hey, 500 NANOS is better called 0,5 micron huh?
Suspension "Grade" moly disulfide powder has a 0.3 um particle size.
Krex claims their graphite has a 0.750 um particle size.
1 um = 1X10^-6m = 1000 nm = 1000X10^-9m. 1 nm = 1X10^-9m.
So 0.3 um is = 0.3X10^-6 m = 300X10^-9 m =
300 nanometers.
So 0.750 um is = 0.750X10^-6 m = 750X10^-9 m =
750 nanometers.
10^-9 means "base ten to the
minus 9th power."