Hi
In unvulacnised form, when I section cut NBR, I see some white particles under 20X magnification.
Got it tested and found to be ZnO. Supplier say it's normal.
Anyway to prevent? What could be likely cause?
Thanks much for reading.
Hi
Is there a standardized method to measure the hardness of rubber (say in Shore A) at higher temperature?
If not, anyone try doing this before? Can share your experiences?
Cheers