ASTM D2116-97
(Specification)Standard Specification for FEP-Fluorocarbon Molding and Extrusion Materials
Standard Specification for FEP-Fluorocarbon Molding and Extrusion Materials
SCOPE
1.1 This specification covers melt processable molding and extrusion materials of FEP-fluorocarbon resin. This specification does not cover recycled FEP materials. These FEP resins are copolymers of tetrafluoroethylene and hexafluoropropylene or modified FEP-fluorocarbon resins containing not more than 2% by weight of other fluoromonomers.
1.2 The values stated in SI units as detailed in Practice E380 are to be regarded as the standard and the principles of Practice E380 incorporated herein.
Note 1—Although this specification and ISO 12086-1 (1994) and ISO 12086-2 (1994) differ in approach or detail, data obtained using either are technically equivalent.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification. 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.
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Standards Content (Sample)
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Designation: D 2116 – 97
Standard Specification for
FEP-Fluorocarbon Molding and Extrusion Materials
This standard is issued under the fixed designation D 2116; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* D 1898 Practice for Sampling of Plastics
D 3295 Specification for PTFE Tubing
1.1 This specification covers melt processable molding and
D 3418 Test Method for Transition Temperatures of Poly-
extrusion materials of FEP-fluorocarbon resin. This specifica-
mers by Thermal Analysis
tion does not cover recycled FEP materials. These FEP resins
D 3892 Practice for Packaging/Packing of Plastics
are copolymers of tetrafluoroethylene and hexafluoropropylene
E 380 Practice for Use of the International System of Units
or modified FEP-fluorocarbon resins containing not more than
(SI) (the Modernized Metric System)
2 % by weight of other fluoromonomers.
E 691 Practice for Conducting an Interlaboratory Study to
1.2 The values stated in SI units as detailed in Practice
Determine the Precision of a Test Method
E 380E 380 are to be regarded as the standard and the
2.2 ISO Standards:
principles of Practice E 380E 380 incorporated herein.
ISO 12086-1:1995 Plastics—Fluoropolymer Dispersions
NOTE 1—Although this specification and ISO 12086-1 and
and Moulding and Extrusion Materials—Part 1
ISO 12086-2 differ in approach or detail, data obtained using either are
ISO 12086-2:1995 Plastics—Fluoropolymer Dispersions
technically equivalent.
and Moulding and Extrusion Materials—Part 2
1.3 The following precautionary caveat pertains only to the
test methods portion, Section 11, of this specification. This 3. Terminology
standard does not purport to address all of the safety concerns,
3.1 Definitions:
if any, associated with its use. It is the responsibility of the user
3.1.1 General—The definitions given in Terminology
of this standard to establish appropriate safety and health
D 883D 883 are applicable to this specification.
practices and determine the applicability of regulatory limita-
3.2 Abbreviated Terms:
tions prior to use.
3.2.1 General—The abbreviated terms given in Terminol-
ogy D 1600D 1600 are applicable to this specification.
2. Referenced Documents
2.1 ASTM Standards: 4. Classification
D 150 Test Methods for A-C Loss Characteristics and
4.1 This specification covers four types of FEP-
Permittivity (Dielectric Constant) of Solid Electrical Insu-
fluorocarbon resin supplied in pellet form classified according
lating Materials
to their melt flow rate.
D 618 Practice for Conditioning Plastics for Testing
4.2 A one-line system may be used to specify materials
D 638 Test Method for Tensile Properties of Plastics
covered by this specification. The system uses predefined cells
D 792 TestMethodsforDensityandSpecificGravity(Rela-
to refer to specific aspects of this specification, illustrated as
tive Density) of Plastics by Displacement
follows:
D 883 Terminology Relating to Plastics
Specification
D 1238 Test Method for Flow Rates of Thermoplastics by
Standard Number : Type : Special
Extrusion Plastometer
Block : : notes
D 1600 Terminology for Abbreviated Terms Relating to
:: :
Plastics
–––––––––––– ––– ,––––
Example: Specification D 2116 – 95, I
This specification is under the jurisdiction of ASTM Committee D-20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials (Section D20.15.12).
Annual Book of ASTM Standards, Vol 08.02.
Current edition approved Nov. 10, 1997. Published April 1998. Originally
published as D 2116 – 62 T. Last previous edition D 2116 – 96. Annual Book of ASTM Standards, Vol 14.02.
2 6
Annual Book of ASTM Standards, Vol 10.01. Available from American National Standards Institute, 11 W. 42nd St., 13th
Annual Book of ASTM Standards, Vol 08.01. Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
D2116–97
For this example, the line callout would be Specification 8. Test Specimens
D 2116 – 95,I and would specify an FEP-fluorocarbon resin
8.1 Prepare a molded sheet 1.5 6 0.3 mm (0.0606 0.010
thathasallofthepropertieslistedforthattype,grade,andclass
in.) thick. Use a picture-frame-type chase having a suitable
in the appropriate specified properties or tables, or both, in the
blanked-out section and thickness to produce the desired sheet.
specification identified. A comma is used as the separator
Use clean aluminum foil, 0.13 to 0.18 mm (0.005 to 0.007 in.)
between the standard number and the type. A provision for
thick, in contact with the resin. A high-temperature mold
special notes is included so that other information can be
release agent may be sprayed on the aluminum foil to help
providedwhenrequired.AnexamplewouldbeinSpecification
prevent the foil from sticking to the sheet. Use steel molding
D 3295D 3295 where dimensions and tolerances are specified
plates at least 1.0 mm (0.040 in.) thick and of an area adequate
for each AWG size within type and class. When special notes
to cover the chase.
are used, they should be preceded by a comma.
8.2 Lay down and smoothly cover one plate with a sheet of
aluminum foil. Place the mold chase on top of this assembly.
5. General Requirements
Place within the mold chase sufficient molding material to
5.1 The materials shall be of uniform composition and so
produce the required sheet in such a manner that the polymer
prepared as to conform to the requirements of this specifica-
charge is a mound in the middle of the chase. Place a second
tion.
sheet of aluminum foil on top of the granules and add the top
5.2 The material described in this specification shall be free
mold plate. Place the assembly in a compression molding press
of foreign matter to such a contamination level as may be
having platens that have been heated to 372 6 5°C (702 6
agreed upon between the purchaser and the seller.
9°F).
8.3 Bring the platens to incipient contact with the mold
6. Detail Requirements
assembly. Hold for 2 to 4 min without pressure. Apply
6.1 The average test result of the lot shall conform to the
approximately 1 MPa (145 psi) and hold for 1 to 1.5 min.Then
requirements prescribed in Table 1 and Table 2 when tested by
apply 2 to 4 MPa (290 to 580 psi) and hold for 1 to 1.5 min.
Maintain the press at 372 6 5°C (7026 9°F) during these
TABLE 1 Detail Requirements for Test on Molding Materials
steps. Remove the assembly from the press and place between
Type Type Type Type
two 20 6 7-mm (0.75 6 0.25-in.) steel plates whose tempera-
I II III IV
ture is less than 40°C (104°F).
Melt flow rate, g/10 min:
8.4 When the sheet is cool enough to touch (about 50 to
Load, 5000 g:
60°C(122to140°F)),removealuminumfoilfromthesheet.(If
Min 4.0 >12.0 0.8 2.0
Max 12.0 . 2.0 3.9
the sheet is allowed to cool to room temperature, the aluminum
TABLE 2 Detail Requirements for Molded Test Specimens
Type I Type II Type III Type IV
Specific gravity 23/23°C (73/73°F)
Min 2.12 2.12 2.12 2.12
Max 2.17 2.17 2.17 2.17
Melting point, °C 260 6 20 260 6 20 260 6 20 260 6 20
Tensile strength, 23°C (73°F), min:
MPa 17.3 14.5 20.7 18.7
psi 2500 2100 3000 2700
Elongation, 23°C (73°F), min, % 275 240 275 275
Dielectric constant, max:
At 10 Hz 2.15 2.15 2.15 2.15
At 10 Hz 2.15 2.15 2.15 2.15
Dissipation factor, max:
At 10 Hz 0.0003 0.0003 0.0003 0.0003
At 10 Hz 0.0007
0.0007 0.0009 0.0007
the procedures specified herein. Table 2 lists those tests foil cannot be pulled free.)
requiring a specimen molded as described in Section 8.
9. Conditioning
7. Sampling
9.1 For tests of specific gravity and tensile properties,
7.1 Unless otherwise agreed upon between the purchaser
condition the molded test specimens in accordance with
andthesellerthematerialsshallbesampledinaccordancewith
Procedure A of Practice D 618D 618 for a period of at least 4
Practice D 1898D 1898.Adequate statistical sampling shall be
h prior to test. The other tests require no conditioning.
considered an acceptable alternative.
9.2 ConducttestsattheStandardLaboratoryTemperatureof
23 6 2°C (73.4 6 3.6°F) for determination of specific gravity
and tensile properties only. Since this resin does not absorb
See the ASTM Form and Style Manual, available from ASTM Headquarters. water, the maintenance of constant humidity during testing is
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
D2116–97
not necessary. Conduct tests for melt flow rate and melting metal type of curvature of 5 6 0.5 mm (0.2 6 0.02 in.).
point under ordinary laboratory conditions. Average the test results. Determine the tensile properties in
accordance with the procedures described in Test Method
10. Packaging and Marking
D 638D 638, except that the specimens used shall be as
10.1 Packaging—The resin pellets shall be packaged in
detailed in Section 8, the initial jaw separation shall be 22.2 6
standard commercial containers so constructed as to ensure
0.13 mm (0.875 6 0.005 in.), and the speed of testing shall be
acceptance by common or other carriers for safe transportation
50 6 5 mm/min (26 0.2 in./min). Clamp the specimen with
to the point of delivery, unless otherwise specified in the
essentially equal lengths in each jaw. Determine the elongation
contract or order.
from the chart, expressing it as
...
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