I am trying to produce NBR (medium ACN)anti-fatigue mats which hardness is about 50 shore A. However there are many scars on its surface. Would anyone here help me to get it resolved ? Thank you very much
My formulation
Nitrile 100
Caco3 40
Carbon black N330 10
DOP oil 10
6PPD 1.5
Paraffin wax 2...