11 Questions 21 Answers 0 Followers
Questions related from José Alberto Salazar-Jiménez
Hello everyone, May anyone please guide me with some bibliography about the modeling and simulation of a Plasma welding/melting process (mainly emphasizing on mathematical equations)?I have to...
08 August 2014 6,674 2 View
If they are, in what terms are they?
01 January 2014 3,953 6 View
Does anyone have information about the simulation of Carbon Nanotube - Polymer Nanocomposites in Comsol Multiphysics?
06 June 2013 9,230 12 View
Can a non-thermoplastic polyurethane be dissolved in an organic solvent, like THF? By non-thermoplastic, I refer to a polyurethane made with a tri-functional polyol
06 June 2013 509 4 View
For example, I have read from some papers, that this issue can be done with a simple magnetic stirring of the components (polyol, isocyanate, chain extender) in a beaker at approx 80 ªC and...
06 June 2013 9,770 22 View
Is there information about the usage of Glycerol propoxylate-block-ethoxylate (f = 2.5) as a polyol in polyurethane synthesis?
06 June 2013 1,921 0 View
I'm looking for microsized polyolefin powders for a study using solution casting with carbon nanotubes. Can someone suggest a place where I can buy them?
05 May 2013 5,489 2 View
For example, if I have: Trifunctional polyol (MW = 6000 g/mol) Diisocyanate (MW = 250 g/mol) Chain estender (WM = 90 g/mol) How much do I need in grams of (each one) for the stoichiometric molar...
01 January 2013 2,430 8 View
For example, if any component which forms a polyurethane has a functionality greater than 2, crosslinks are formed in the structure of this polymer, regardless the nature of this component...
01 January 2013 4,445 2 View
I have seen in several papers that the NCO/OH ratio directly affects the properties of a polyurethane, but they do not explain how they obtained that ratio. Any suggestions?
12 December 2012 4,468 6 View
I have read that for the preparation of a polyurethane elastomer, a difunctional polyol is used, where this elastomer requires crosslinkings in its structure presented by hydrogen bonds. Can I use...
12 December 2012 5,113 6 View