ASTM D1042-01a

Standard Test Method for Linear Dimensional Changes of Plastics Under Accelerated Service Conditions

SCOPE
1.1 This test method is designed to provide a means for measuring in plastic specimens the dimensional changes resulting from exposure to service conditions. In particular, this test method is suitable for measuring shrinkage or elongation developed under specific oven and water conditionings.
1.2 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 is no similar or comparable ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2001
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.50 - Durability of Plastics

Relations

• Replaces: ASTM D1042-01 - Standard Test Method for Linear Dimensional Changes of Plastics Under Accelerated Service Conditions
• Effective Date: 10-Mar-2001
• Replaced By: ASTM D1042-06 - Standard Test Method for Linear Dimensional Changes of Plastics Under Accelerated Service Conditions
• Effective Date: 01-Sep-2006
• Referred By: ASTM D4726-18 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Exterior-Profile Extrusions Used for Assembled Windows and Doors
• Effective Date: 10-Mar-2001
• Referred By: ASTM F3459-21 - Standard Specification for Rigid Poly Vinyl Chloride (PVC) Exterior Profiles Used for Sound Walls
• Effective Date: 10-Mar-2001
• Referred By: ASTM F641-09(2023) - Standard Specification for Implantable Epoxy Electronic Encapsulants
• Effective Date: 10-Mar-2001
• Referred By: ASTM D3678-19 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Interior-Profile Extrusions
• Effective Date: 10-Mar-2001
• Referred By: ASTM D7793-21 - Standard Specification for Insulated Vinyl Siding
• Effective Date: 10-Mar-2001
• Referred By: ASTM D7445-18 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding with Foam Plastic Backing (Backed Vinyl Siding)
• Effective Date: 10-Mar-2001
• Referred By: ASTM F2902-16e1 - Standard Guide for Assessment of Absorbable Polymeric Implants
• Effective Date: 10-Mar-2001
• Referred By: ASTM D3679-21 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding
• Effective Date: 10-Mar-2001
• Referred By: ASTM F2150-19 - Standard Guide for Characterization and Testing of Biomaterial Scaffolds Used in Regenerative Medicine and Tissue-Engineered Medical Products
• Effective Date: 10-Mar-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1042–01a
Standard Test Method for
Linear Dimensional Changes of Plastics Under Accelerated
1
Service Conditions
This standard is issued under the fixed designation D 1042; 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 test method is designed to provide a means for
measuring in plastic specimens the dimensional changes re-
sulting from exposure to service conditions. In particular, this
test method is suitable for measuring shrinkage or elongation
FIG. 1 Scriber
developed under specific oven and water conditionings.
1.2 This standard does not purport to address all of the
in position by set screws inserted through the ends of the rod.
safety concerns, if any, associated with its use. It is the
A stainless steel gage with reference points consisting of a
responsibility of the user of this standard to establish appro-
center and two short concentric arcs (R = 99.80 6 0.02 mm,
1
priate safety and health practices and determine the applica-
andR =100.20 60.02mm)shallbeusedforcalibrationofthe
2
bility of regulatory limitations prior to use.
scriber. Thickness of arc lines shall not exceed 0.02 mm.
NOTE 1—There is no similar or comparable ISO standard.
NOTE 2—Phonograph needles may be used as a satisfactory scriber.
2. Referenced Documents
5.2 Measuring Microscope, having a magnification of at
least 203 and graduated to have a resolution of 0.1 mm.
2.1 ASTM Standards:
2
D 883 Terminology Relating to Plastics
NOTE 3—For more precise measurements, a micrometer microscope
should be used.
3. Terminology
5.3 Beaker, having a suitable size for the number of
3.1 Definitions: Definitions of terms applying to this test
specimens to be evaluated and is constructed of a material that
method appear in Terminology D 883.
is stable under the test conditions.
5.4 Room or Conditioning Chamber, capable of being
4. Significance and Use
maintained at 23 6 2°C.
4.1 This test method is intended only as a convenient test
5.5 Conditioning Oven, full draft air-circulating oven, ca-
method for measurement of linear dimensional changes in
pable of being maintained within 62°C of the set temperature.
plastics subjected to defined conditions of test as outlined in
5.6 Absorbent Material, cloth or paper suitable for drying.
Section 8. When all precautions are observed, measurements
are reproducible to 60.02 %.
6. Test Specimens
6.1 Specimensshallnotbelessthan110mminlengthinthe
5. Apparatus
direction of test. The preferred specimen size is 125 65mm
5.1 Scriber, so constructed that two sharp needle points are
in length by 13 6 0.5 mm wide by 3.0 (-0.0 + 0.2) mm thick.
rigidly separated by 100 6 0.2 mm. The scriber, as shown in
6.2 Three specimens shall be tested for each conditioning.
Fig. 1, consists of two sharp steel needles, approximately 1.5
6.3 Individual specimens shall be positioned vertically in
mm in diameter. The needles are to be inserted in drilled holes
the specified environment.
with their axes parallel to each other and perpendicular to and
NOTE 4—A wire hook inserted in a hole drilled in one end of the
intersecting the long axis of a stainless steel rod, 8.0 6 0.1 mm
specimen has been found acceptable.
in diameter by 125 mm 6 5 mm in length. The needles’ points
shall extend 6 6 1 mm beyond the supporting rod and are held
7. Conditioning and Exposure
7.1 Preconditioning
1 7.1.1 Precondition specimens at 23 6 2°C and 50 65%
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
relative humidity for a minimum of 40 h prior to initial
and is the direct responsibility of Subcommittee D20.50 on Durability of Plastics.
Current edition approved April 10, 2001. Published June 2001. Originally
scribing.
published as D 1042 – 49 T. Last previous edition D 1042 – 01.
2
Annual Book of ASTM Standards, Vol 08.01. NOTE 5—If moisture equilibrium is required prior to preconditioning,
*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.
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D1042
refer to the specific material specifications.
9.2 Determine the amount of linear expansion or shrinkage
by the following:
7.1.2 After removal from the conditioning environment,
L 5 D D 3 100
specimens shall be tested within 30 min. C B/ I
7.2 Method A—Water Immersion
where:
7.2.1 Specimens shall be immersed in water maintained at
L = percent of linear change,
C
23 6 2°C for 168 61h.
D = distance between the scribed arcs, and
B
7.2.2 The specimens shall be wiped dr
...