4 Questions 6 Answers 0 Followers
Questions related from Sanjiban Chakraborty
I am trying to compress some optical quality plastic in compression molding machine in between stainless steel plates at 20,000 psi. However the metal is leaving some impression on the pressed...
01 September 2021 3,411 3 View
I have made polyurethanes from methylene diphenyl diisocyanate (MDI). There is no moisture in the reaction. The final polymer is faint yellow or brown even when I used a sterically hindered...
29 May 2020 6,578 2 View
I am planning to run a polyurethane reaction which has two monomers: one is a diisocyanate and the other is a diol. However the diisocyanate is not forming a homogenous mixture with the diol. The...
27 September 2019 7,811 3 View
I have a rigid polymer which needs to be freeze milled and sieved through 100 mesh. I added the liquid nitrogen inside the stainless steel vial of the polymer containing polymer and milled. After...
19 January 2019 3,199 6 View