Impact resistance requirement is revised to correctly incorporate Type I Grade 2 low viscosity resins into the standard based on material performance. Low viscosity materials falling into Type I Grade 2 have lower impact values than medium and high viscosity materials in that classification. In the case of Type II resins the impact resistance is no longer required since it often does not meet the 80 J/m impact requirement. For Type I resins, testing data shows that for low viscosity resins a lower limit of 40 J/m is feasible if complete elimination of impact as a requirement for Type I resins is not a preferred way to handle this property in the standard as was done for Type II resins. Your approval of the ballot is requested.
Keywordsextrusion materials; fluorohydrocarbon plastics; fluoropolymers; molding materials; polyvinylidene fluoride (PVDF);;
Draft Under Development