Astm D 3222 – 99 pdf free download

Standard Specification for
Unmodified Poly(Vinylidene Fluoride) (PVDF) Molding
Extrusion and Coating Materials1

This standard is issued under the fixed designation D 3222; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope *

1.1 This specification covers melt processable molding and
extrusion materials, as well as coating materials of poly(vinylidene fluoride) fluoroplastic, commonly abbreviated PVDF
(or PVF2 in scientific literature). This specification covers
thermoplastic resin materials supplied in pellet or powder
form.

1.2 This specification applies only to the virgin homopolymer prepared from vinylidene fluoride, not copolymers, reinforced, filled grades or special grades with additives or
treatments for modification of attributes.

1.3 The tests involved are intended to provide information
for specification of unmodified PVDF homopolymer resins. It
is not the purpose of this specification to provide engineering
data for design purposes.

1.4 PVDF fluoroplastics melt between 156 and 180°C (312
and 356°F) and are thermally stable up to about 370°C (698°F).
NOTE 1—Warning: Evolution of corrosive and toxic hydrogen fluoride
can occur under certain conditions.

1.5 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.

NOTE 2—PVDF exhibits polymorphism.2 The type and extent of
crystalline structure varies with the thermomechanical history of the
sample. Specimens prepared by techniques different than prescribed in
this specification could have properties that may vary from the values
specified.

1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Note 1 and Section 10.
NOTE 3—There is no equivalent ISO standard for this specification

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