1、Designation: D6207 03 (Reapproved 2011)Standard Test Method forDimensional Stability of Fabrics to Changes in Humidity andTemperature1This standard is issued under the fixed designation D6207; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the dimen-sional stability of fabrics that are inte
3、nded for use on panel andscreen systems to cycled changes in humidity and temperature.1.1.1 Panel and screen systems include acoustic panels, freestanding screens, office partitions, and furniture systems.1.2 The values stated in SI units are to be regarded as thestandard. The values in parentheses
4、are approximate inch-pound unit equivalents and are for information only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine
5、the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD4850 Terminology Relating to Fabrics and Fabric TestMethodsD5034 Test Method for Breaking Strength and Elongationof Textile Fabrics (Grab Test)D5035 Test Method
6、for Breaking Force and Elongation ofTextile Fabrics (Strip Method)3. Terminology3.1 Definitions:3.1.1 For all terminology related to D13.59 on Fabric TestMethods, General, see Terminology D4850.3.1.1.1 The following terms are relevant to this standard:bench mark; dimensional change; dimensional stab
7、ility.3.1.2 For definitions of all other textile terms see Terminol-ogy D123.4. Summary of Test Method4.1 Dimensional change (growth and shrinkage) data iscollected for a specimen of fabric that is subjected to controlledcycles of specified relative humidity and temperature condi-tions.5. Significan
8、ce and Use5.1 The measured dimensional stability of a fabric deter-mines whether a fabric has the potential to retain its originalshape and remain stable, indicating it will not bubble or sagover time, when applied over a substrate, and its suitability fora specified use.5.2 This test method is reco
9、mmended for acceptance testingof commercial shipments however, caution is advised sinceinformation about between laboratory precision is incomplete.Comparative tests as directed in 5.2.1 are advisable.5.2.1 If there are differences of practical significance be-tween reported test results for two lab
10、oratories (or more),comparative test should be performed to determine if there is astatistical bias between them, using competent statistical assis-tance. At a minimum, use the samples for such a comparativetest that are as homogeneous as possible, drawn from the samelot of material as the samples t
11、hat resulted in disparate resultsduring initial testing and randomly assigned in equal numbersto each laboratory. The test results from the laboratoriesinvolved should be compared using a statistical test forunpaired data, a probability level chosen prior to the testingseries. If bias is found, eith
12、er its cause must be found andcorrected, or future test results for that material must beadjusted in consideration of the known bias.5.3 This test method is used in industry to determine if afabric grows, grows and then shrinks, shrinks and then grows,or remains the same when subjected to a specifie
13、d range ofhumidity and temperature conditions.6. Apparatus6.1 Environmental Test Chamber, meeting the followingcriteria:1This test method is under the jurisdiction of ASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,General.Current edition
14、approved May 1, 2011. Published July 2011. Originally approvedin 1997. Last previous edition approved in 2007 as D6207 03(2007). DOI:10.1520/D6207-03R11.2For referenced ASTM standards, visist the ASTM Web Site, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM
15、Standardsvolume information, refer to the standards Document Summary page onthe ASTM web site.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.1.1 Capable of testing two specimens at one time, each150 by 1000, 6 6 mm (6.0 by 39.0, 6
16、 0.25 in.) mountedvertically in a single frame.6.1.2 Capable of a relative humidity range of 15 to 95%,controllable to 6 5%.6.1.3 Capable of a temperature range of 15 to 35 C (59 to95 F) with a tolerance of 6 2C(6 4 F).6.1.4 Provision for automatic cycling of humidity andtemperature conditions.6.1.5
17、 Having visible humidity and temperature indicatorsand a continuous recording device (digital readout or plotter).6.2 Specimen Frame, meeting the following criteria:6.2.1 Of a size that will fit in the test chamber and hold twospecimens, see Fig. 1.6.2.2 With a means for measuring specimen length of
18、 atleast 1000 mm (36 in.) in increments of 1 mm (0.05 or116 in.).6.2.3 With a means for holding and suspending the speci-men vertically.6.3 Pointers, T-shaped or common straight pins, one perspecimen, for reference marks.6.4 A weight spring clamp, with a mass of 100 6 5g,oneper specimen, to create a
19、 uniformly distributed force across thespecimen width dimension of 1.00 n 6 0.05 N (0.22 lbf).6.4.1 Examples of weighted spring clamps are the paperholders used on the top of clip boards and potato chip bagclamps.7. Sampling7.1 Lot SampleTake a lot sample as directed in theapplicable material specif
20、ication. In the absence of such aspecification, randomly select the rolls or pieces that constitutethe lot sample using the following schedule:Number of Rolls, Pieces in Number of Rolls, or Pieces inLot, Inclusive Lot Sample1to3 All4to24 425 to 50 5Over 50 10 % to a maximum of 10 of the rolls orpiec
21、es.NOTE 1An adequate specification or other agreement between thepurchaser and supplier requires taking into account the variability betweenrolls of fabric and between specimens from a swatch from a roll of fabricto provide a sampling plan with a meaningful producers risk, consumersrisk, acceptable
22、quality level, and limiting quality level.NOTE 2The above section is above from Test Methods D5034 andD5035.7.2 Laboratory SampleFor a laboratory sample take aswatch extending the full width of the fabric and approximately1.5 m (1.5 yd) along the length from the lot sample roll/bolt.Take swatches th
23、at will exclude the outer or inner layer offabric.7.3 Test SpecimensFrom each laboratory sample swatch,cut two specimens, each 150 by 1000 6 6 mm (6.0 by 39.0 60.25 in.), one cut in the lengthwise direction of the roll, and onecut in the widthwise direction of the roll (across). Take nospecimen with
24、in 10% of the fabric width from the selvage.Avoid areas with wrinkles.8. Preparation of Apparatus8.1 Check all elements of the environmental test chamber toensure that they are functioning properly. These elementsinclude, but are not limited to, the humidifier, dehumidifier,heater, fan, gages, and r
25、ecording device.8.2 Calibrate the test chamber instrumentation as recom-mended by the manufacturer, to maintain relative humidity andtemperature accuracy.9. Preparation of Test Specimens9.1 Position and clamp length and width test specimens inthe specimen frame. (See Fig. 2).9.2 Attach a weighted sp
26、ring clamp to the lower end of eachspecimen (see 6.4). Do not remove the weighted springsclamps until the test has been completed.9.3 Precondition the specimens (see 9.2)for24hat15+/-5 % relative humidity (RH) and 32 +/- 2 C (90 +/- 4 F).9.3.1 The specimens may be preconditioned in a separatecontrol
27、led drying oven, a preconditioning oven, or the envi-ronmental test chamber.10. Procedure10.1 If not already in the test chamber (see 9.3), place theprepared and preconditioned specimens vertically in the testchamber, that has been stabilized at 15 +/- 5 % RH, and 32 +/-2C (90 +/- 4F).10.2 Attach a
28、horizontal pointer to each specimen at the 900mm (35.0 in.) mark as indicated by the scale.10.3 Note any observed discoloration, bubbling, or curlingof the specimens and the stage of testing at which it was noted.10.4 Overa8hperiod, increase the humidity to 95 % +/- 5% RH and reduce the temperature
29、to 20 62C (68 6 4F). Usea uniform rate of change of 10% RH/h and 1.5 C/h (2.75F/h).10.5 At the end of the period record the pointer readings tothe nearest 1 mm (0.05 or116 in.), and the conditions.10.6 Over the next 16 h decrease the humidity level to 15+/- 5 % RH, and raise the temperature to 32 +/
30、- 2C (90 +/-4F). Use a uniform rate of change of 5% RH/h and 0.75C/h(1.375F/h).10.7 At the end of this period, record the pointer readings tothe nearest 1 mm (0.05 or116 in.), and the conditions.10.8 Repeat 10.3-10.6 over the next 24 h.10.9 Remove the specimen frame from the test chamber, thelinear
31、weights from the specimens, and the specimens from theframe.11. Report11.1 State that the specimens were tested as directed in thistest method. Described the material or product sampled and themethod of sampling used.11.2 Report the following information (refer to Fig. 3 for anexample of a report la
32、yout):11.2.1 The manufacturers name, the style, the fiber contentof the fabric, and any special treatment (for example, latexbacking, stain and soil reducing treatments etc.).11.2.2 The initial pointer setting for both length and widthspecimens.D6207 03 (2011)2FIG. 1 Specimen FrameD620703(2011)3FIG.
33、 2 Specimens Mounted in Specimen FrameD620703(2011)411.2.3 The pointer measurements at the end of the humidand dry phases of the test cycle for both the length and thewidth specimens (four readings each over two cycles).11.2.4 If any of the specimens became stable during the test.11.2.5 Any discolor
34、ation, bubbling or curling of the speci-mens recorded.11.3 Any report layout as shown in Fig. 3 can be used.12. Precision and Bias12.1 PrecisionWhen the procedure in this test methodwas used in a single laboratory to measure the variousdimensional changes described in 5.2.1, the maximum standarddevi
35、ation was 0.8 mm (0.03 in.).12.2 BiasThe procedure in this test method for determin-ing the dimensional changes in fabrics due to humidity andtemperature variations has no known bias because the value ofthe dimensional change is defined only in terms of this testmethod13. Keywords13.1 dimensional ch
36、ange; fabric; humidity; temperatureFIG. 3 Example of Report LayoutD6207 03 (2011)5ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the v
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39、ve not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multipl
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