Talk:Lubricant

Chemistry Low‑importance

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Materials Mid‑importance

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Technology

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Comment

Describing the invention of ball bearings as "revolutionary" seems a bit ridiculous, but I can't think of a better term. --user:Heron

Hanging Sentence

In the section named "Keep moving parts apart", there is an incomplete sentence:

"This is termed hydrodynamic lubrication. In cases of high surface pressures or temperatures the fluid film is much thinner and some of the forces are transmitted between the surfaces through"

Superlubricity?

Someone needs to mention Superlubricity. Jawed 04:46, 7 Feb 2005 (UTC)

~~== Russian band == There is also a Russian band called Lube (or Lubeh). Should this be mentioned? Zscout370 (Sound Off) 2 July 2005 16:29 (UTC)~~

~~I don't think that really interesting stuff for none USR people.~~
I think it is. They have a really kick-ass song that is usually passed as "Rammstein – Juden Hasst". Even though Rammstein has nothing to do with it. --82.79.168.47 10:17, 13 September 2005 (UTC)[reply]

~~If you think it should be mentioned it should be dealt with like a redirect, personally I disagree. Darkwraith 19:50, 26 June 2006 (UTC)~~[reply]

Lubricants as pollutants

"In developed nations, lubricants contribute to nearly 1/4 of total pollution released to environment." That can't be right. We need a source or clarification of that statment.

Carax 16:13, 23 July 2005 (UTC)[reply]

Grease isn't a liquid ?

It looks like one to me, at least at high temps. StuRat 05:11, 9 August 2005 (UTC)[reply]

Like many materials, grease melts when hot and freezes when cold. But at room temperature grease is a thixotropic power-law fluid. See: Grease (lubricant). —Ryanrs 12:06, 17 February 2006 (UTC)[reply]

Cleanup tag

I've put a cleanup tag on the article. It particularly refers to the intoductory section, which needs a complete rewrite as it contains several errors.

The lubricant may form a dispersion, disperses some wear products originating from the contacting surfaces, but does not dissolve much of them, although it might dissolve some.

Vaseline is cited as a tyical petroleum based lubricant. It is stated, that it dissolves petroleum products: rubber is a natural product, comes from the rubber tree. Petroleum based lubricants are designed such that their interaction with rubber/plastic seals is minimal.

What do we mean by a water based lubricant? These are cited as dissolving dirt: what dirt? inorganic contaminants, such as abrasive atmospheric dust, mainly silicates and aluminates do not dissolve in water.

Lubricants do not necessarily interact chemically with the contacting surfaces: in hydrodynamic lubrication the viscosity of the lubricant is capable of keeping the moving surfaces apart.

The statement "The lubricant must be replaced when it has dissolved to saturation" does not make sense. As very little solution takes place there is no saturation: Lubricating oils are replaced when there are too much abrasive contaminants in them, or as in the case of motor oils when the oil, through oxidation looses its ability to lubricate, because its Viscosity Index has dropped significantly and some of its components have partially dehydrogenated/oxidised and created coke particles which abrade instead of lubricating.

The last sentence does not appear to make much sense to me either. LouisBB (talk) 05:01, 23 May 2008 (UTC)[reply]

The reference section is a total disaster. Who put those in there, and what part of the article do they relate to? They are numbered like footnotes, but I can't find what they relate to. --THE FOUNDERS INTENT ^PRAISE 14:05, 6 August 2008 (UTC)[reply]

LUBRICANTS DEFINITION

Lubricants are supposed to help in the reduction of friction between particles during compression and between the compressed tablet and die wall during the ejection cycle.Lubricants also increase the density of particle bed before compression and equalise the is distribution in the compressed tablets. —Preceding unsigned comment added by 122.168.249.219 (talk) 19:03, 3 February 2010 (UTC)[reply]

Heat Capacity

Should Heat Capacity be added to the list of properties of a lubricant? 194.176.105.139 (talk) 11:48, 18 August 2014 (UTC)[reply]

Wait, what?

First, what is "horological lubricant"? Also, I would like to know why "personal lubricant" is under the heading "other motors"...actually, I don't want to know. 74.98.216.253 (talk) 19:03, 12 February 2017 (UTC)[reply]

No mention of cubing?

Yes, seriously? — Preceding unsigned comment added by 2A01:119F:21D:7900:ED5E:B45:24A2:7F89 (talk) 18:23, 3 November 2017 (UTC)[reply]

External links modified

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Proposed Addition

This edit request by an editor with a conflict of interest has now been answered.

Hello, my name is Kim, and I work at MSL, a PR agency representing paints and performance coatings company Akzo Nobel. I am working closely with Akzo Nobel scientists and experts in the field to clarify the benefits and uses of oil additives within the chemistry and technology communities, and I would like to propose an addition to this page:

Under the “Additives” section, add the following sentence at the end of the “Friction Modifiers” (last) line item:

These agents are often fatty amine Fatty_amine organic friction modifiers, which can be easily tailored for specific needs. Synergistic benefits are seen ^[1] when used in combination with anti-wear additives such as zinc dithiophosphate Zinc_dithiophosphate.

Kim at MSL (talk) 17:46, 2 February 2018 (UTC)[reply]

References

^ Lundgren, S., Eriksson, K., and Rossenaar, B. "Boosting the Friction Performance of Amine Friction Modifiers with MoDTC", “SAE International Journal of Fuels and Lubricants”, United States, 14 April 2015.

This seems like a reasonable addition to the article to me. I've added a very slightly modified version to the article. Gnome de plume (talk) 18:13, 2 February 2018 (UTC)[reply]

Added material deleted

@Gnome de plume and Kim at MSL: I'm sorry but I'm removing the text added by Gnome de plume, the information itself and the reference supplied by the COI editor Kim at MSL are both promotional, as they describe proprietary chemicals manufactured by AzkoNobel, the client of the COI editor's PR company. The placement of product information in Wikipedia articles is not allowed, per WP:PLUG. Spintendo ᔦᔭ 05:59, 3 February 2018 (UTC)[reply]

@Gnome de plume and Spintendo: Thank you for your feedback on proposed additions. While Akzo Nobel does manufacture the proprietary chemicals referenced, it is important to note that additional companies provide other types of Friction Modifiers, such as GMO supplied by Croda, and Molybedenum supplied by Vanderbilt. Would it be reasonable to mention these other Friction Modifiers as well, in order to broaden awareness and knowledge in chemistry applications? Perhaps the addition to the “Friction Modifier” section could read: “Important classes of Friction Modifiers are Fatty Amines, GMO, friction reducing index improvers like polymethylmethacryalte and nano particles.”

https://www.crodalubricants.com/en-gb/discovery-zone/product-range/friction-modifiers

http://www.vanderbiltchemicals.com/products/petro-engine-oil-additives/eo-friction-reducers

[1] Lundgren, S., Eriksson, K., and Rossenaar, B. "Boosting the Friction Performance of Amine Friction Modifiers with MoDTC", “SAE International Journal of Fuels and Lubricants”, United States, 14 April 2015.

[1]