Alex Lin

3 Questions 7 Answers 0 Followers

Questions related from Alex Lin

Why the master curve produced by the time-temperature superposition (TTS) principle appear to be discontinuous?

I'm unsure why the master curve drawn by TTS appears to be discontinuous. Can you provide more information about the issue?

20 June 2023 9,774 0 View

How to identify the cause of the gel state of the polymer solution?

How to analyze the gel-like behavior of polymers? Is it because the degree of polymerization is too high, or is it cross-linked?

22 June 2021 9,370 3 View

Why does the poly(urethane-imide) film crack during the drying process?

Use PMDA (anhydride) + MDI (isocyanate) + NMP (solvent) as the precursor. When CO2 is not produced, add PEG 200 (polyol) as a chain extender. After drying in the oven, the film will break in the oven!

26 May 2021 7,969 3 View