ASTM WK63489

    Revision of D3222 - 18 Standard Specification for Unmodified Poly(Vinylidene Fluoride) (PVDF) Molding Extrusion and Coating Materials

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    Active Standard: D3222 - 18

    Developed by Subcommittee: D20.15 | Committee D20 | Contact Staff Manager



    WK63489

    1. Rationale

    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.


    Keywords

    extrusion materials; fluorohydrocarbon plastics; fluoropolymers; molding materials; polyvinylidene fluoride (PVDF);;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    05-16-2018

    Technical Contact:
    Bryan Douglas

    Status:
    Draft Under Development