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ASTM D2383-97

(Practice)

Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid Conditions

Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid Conditions

SCOPE
1.1 This practice defines the conditions for the exposure and qualitative evaluation of poly(vinyl chloride) (PVC) compounds for plasticizer compatibility under humid conditions. Change in appearance is used for judging compatibility.
1.2 The text of this practice references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this practice.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 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.
Note 1--There are no ISO standards covering the primary subject of this practice.

General Information

Status
Historical
Publication Date
31-Dec-2000
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaced By
ASTM D2383-97(2001) - Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid Conditions
Effective Date
01-Jan-2001

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ASTM D2383-97 - Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid ConditionsASTM D2383-97 - Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid Conditions
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ASTM D2383-97 - Standard Practice for Testing Plasticizer Compatibility in Poly(Vinyl Chloride) (PVC) Compounds Under Humid Conditions
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2383 – 97 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Testing Plasticizer Compatibility in Poly(Vinyl Chloride)
(PVC) Compounds Under Humid Conditions
This standard is issued under the fixed designation D 2383; 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 * ers and aged at either 60°C (140°F) or 80°C (176°F). The
specimens are removed from the containers at specified inter-
1.1 This practice defines the conditions for the exposure and
vals and their appearance is rated in accordance with 9.1 and
qualitative evaluation of poly(vinyl chloride) (PVC) com-
recorded.
pounds for plasticizer compatibility under humid conditions.
Change in appearance is used for judging compatibility.
5. Significance and Use
1.2 The text of this practice references notes and footnotes
5.1 This practice provides an accelerated method for deter-
that provide explanatory material. These notes and footnotes
mining the stability of PVC compounds with respect to
(excluding those in tables and figures) shall not be considered
plasticizer compatibility under humid conditions.
as requirements of this practice.
5.2 The temperatures and humidity employed in this test can
1.3 The values stated in SI units are to be regarded as the
represent actual use conditions, but are intended primarily for
standard.
rating materials.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Apparatus
responsibility of the user of this standard to establish appro-
6.1 Screw-Cap Glass Jars or Capped Metal Containers,
priate safety and health practices and determine the applica-
large enough to avoid contact between specimens. The covers
bility of regulatory limitations prior to use.
shall be provided on the inside with hooks of a corrosion-
NOTE 1—There are no ISO standards covering the primary subject of
resistant metal such as stainless steel, nichrome or nickel.
this practice.
6.2 Forced-Ventilation Laboratory Oven, Type II, Grade A,
in accordance with Specification E 145.
2. Referenced Documents
2.1 ASTM Standards:
7. Specimen Preparation (Note 2)
D 883 Terminology Relating to Plastics
7.1 Cut test specimens with one side having a surface area
D 1249 Specification for Octyl Ortho-Phthalate Ester Plas- 2
of 25 cm from a 0.75-mm (0.029-in.) thick smooth surface
ticizers
plastic sheet (60.05 mm (0.002-in.)) Punch a small hole near
D 1600 Terminology for Abbreviated Terms Relating to
the edge for hanging the specimen.
Plastics
NOTE 2—For use as a control in testing the relative performance of
D 1755 Specification for Poly(Vinyl Chloride) Resins
plasticizers, the following clear formulation may be employed.
E 145 Specification for Gravity-Convection and Forced-
Parts
Ventilation Ovens
General-Purpose PVC Resin:
3. Terminology
Type GP 40000 as defined in Specification D 1755. 100
3.1 General—Definitions are in accordance with Terminol-
Plasticizer:
ogy D 883 and abbreviations with Terminology D 1600, unless
Di-2-ethylhexyl phthalate (Specification D 1249) 50
otherwise indicated.
Stabilizer:
Coprecipitated solid barium-cadmium laurate (barium: 1
4. Summary of Practice
cadmium 2:1)
4.1 Specimens are suspended over water in closed contain-
7.2 Process the test compound in the usual manner on a
two-roll mill for 5 min at the appropria
...

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FIG. 1 Bored Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging bore surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 2 Solid Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging centerline surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 3 Conversion Factors to Be Used in Conjunction with Fig. 1 and Fig. 2 if a Change in the Reference Reflector Diameter is Required
1.4 Considerable verification data for this method have been generated which indicate that even under controlled conditions very significant uncertainties may exist in estimating natural discontinuities in terms of minimum equivalent size flat-bottom holes. The possibility exists that the estimated minimum areas of natural discontinuities in terms of minimum areas of the comparison flat-bottom holes may differ by 20 dB (factor of 10) in terms of actual areas of natural discontinuities. This magnitude of inaccuracy does not apply to all results but should be recognized as a possibility. Rigid control of the actual frequency used, the coil bandpass width if tuned instruments are used, and so forth, tend to reduce the overall inaccuracy which is apt to develop.  
1.5 This practice for inspection applies to solid cylindrical forgings having outer diameters of not less than 2.5 in. [64 mm] nor greater than 100 in. [2540 mm]. It also applies to cylindrical forgings with concentric cylindrical bores having wall thicknesses of 2.5 [64 mm] in. or greater, within the same outer diameter limits as for solid cylinders. For solid sections less than 15 in. [380 mm] in diameter and for bored cylinders of less than 7.5 in. [190 mm] wall thickness the transducer used for the inspection will be different than the transducer used for larger sections.  
1.6 Supplementary requirements of an optional nature are provided for use at the option of the...

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This specification covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts. The steel shall be made by the electric furnace process with or without separate refining such as argon-oxygen decarburization. All castings shall receive heat treatment followed by quench in water or rapid cool by other means as noted. The steel shall conform to both chemical composition and tensile property requirements.
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1.1 This specification2 covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts (Note 1).  
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1.2 A number of grades of austenitic steel castings are included in this specification. Since these grades possess varying degrees of suitability for service at high temperatures or in corrosive environments, it is the responsibility of the purchaser to determine which grade shall be furnished. Selection will depend on design and service conditions, mechanical properties, and high-temperature or corrosion-resistant characteristics, or both.  
1.2.1 Because of thermal instability, Grades CE20N, CF3A, CF3MA, and CF8A are not recommended for service at temperatures above 800 °F [425 °C].  
1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The Supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4.1 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M-specification designation (SI units), the inch-pound units shall apply. Within the text, the SI units are shown in brackets or parentheses.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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