Hello,
I plan to measure the green density of some porous polymeric samples (polyethylene) using the ‘Standard Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes’ Principle (ASTM B962-17)’. According to this standard, in the case of samples containing open pores I need to impregnate the samples using some sort of oil with a viscosity of 20 to 65 cSt (38 c). Since my samples has a lower density than water, I‘m planning to use ethanol instead of water for density measurements according to Archimedes’ law. So to sum it up, I‘m looking for some sort of oil with a viscosity of 29 to 65 cSt, which is insoluble in ethanol and doesn’t react with polyethylene.
Thanks
Hydrocarbon Oils do not react with PE and are insoluble in ethanol, so just look at their technical datasheets for viscosity and choose th right one.
https://www.google.com.tr/amp/s/www.researchgate.net/post/which_are_the_solvents_in_which_oil_is_soluble_at_room_temperature/amp
https://s3.amazonaws.com/academia.edu.documents/30419652/biod-1999-101_biodiesel_production_review.pdf?AWSAccessKeyId=AKIAIWOWYYGZ2Y53UL3A&Expires=1510736660&Signature=TDm6Rb%2FNr%2F47sjBcHWz%2FljY%2FnNw%3D&response-content-disposition=inline%3B%20filename%3DBiodiesel_production_a_review.pdf
Please mind that some oil despite they don't mix with ethanol they can create emulsions. So I recommend You to perform some experiments before performing the exact examination.
Thank you all for your answers.
I experimented with a paraffin based hydraulic oil and it seems to be working
Viscosity is fine and solubility in ethanol is very low.
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