ASTM D6207-2003(2007) Standard Test Method for Dimensional Stability of Fabrics to Changes in Humidity and Temperature《温度和湿度变化时织物尺寸稳定性的标准试验方法》.pdf

1、Designation: D 6207 03 (Reapproved 2007)Standard Test Method forDimensional Stability of Fabrics to Changes in Humidity andTemperature1This standard is issued under the fixed designation D 6207; the number immediately following the designation indicates the year oforiginal adoption or, in the case o

2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 i

3、ntended 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 parenthes

4、es 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 determi

5、ne the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 4850 Terminology Relating to FabricD 5034 Test Method for Breaking Strength and Elongationof Textile Fabrics (Grab Test)D 5035 Test Method for Breaking Forc

6、e and Elongation ofTextile Fabrics (Strip Method)3. Terminology3.1 Definitions:3.1.1 For definitions of textile terms used in this testmethod; bench mark; dimensional change; dimensional stabil-ity; related to textiles, refer to Terminology D 4850.3.1.2 For definitions of other terms related to text

7、iles, referto Terminology D 123.4. 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. Significance and Use5.1 The measured dimensional stabil

8、ity 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 recommended for acceptance testingof commercial s

9、hipments 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 laboratories (or more),comparative test should b

10、e 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 that resulted in disparate resultsduring initi

11、al 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, either its cause must be found andcorrected, or f

12、uture 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 specified range ofhumidity and temperature conditions

13、.6. Apparatus6.1 Environmental Test Chamber, meeting the followingcriteria:6.1.1 Capable of testing two specimens at one time, each150 by 1000, 6 6 mm (6.0 by 39.0, 6 0.25 in.) mountedvertically in a single frame.1This test method is under the jurisdiction of ASTM Committee D13 on Textilesand is the

14、 direct responsibility of Subcommittee D13.59 on Fabric Test Methods,General.Current edition approved July 1, 2007. Published August 2007. Originallyapproved in 1997. Last previous edition approved in 2003 as D 6207 03.2For referenced ASTM standards, visist the ASTM Web Site, www.astm.org, orcontact

15、 ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandardsvolume 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.6.1.2 Capable of a relati

16、ve 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 Having visible humidity and temperature indicatorsand a continuous reco

17、rding 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 atleast 1000 mm (36 in.) in increments of 1 mm (0.05 or116 in.).6.2.3 W

18、ith 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 uniformly distributed force across thespecimen width dimension of 1.00

19、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 specification. In the absence of such aspecification, randomly select the roll

20、s 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 orpieces.NOTE 1An adequate specification or other agreement between thepurchas

21、er 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 quality level, and limiting quality level.NOTE 2The above section is abo

22、ve from Test Methods D 5034 andD 5035.7.2 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 that will exclude the outer or inner layer offabric.7.3 Test SpecimensFr

23、om 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 within 10% of the fabric width from the selvage.Avoid areas with wrinkles.

24、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 recording device.8.2 Calibrate the test chamber instrumentation as reco

25、m-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 spring clamp to the lower end of eachspecimen (see 6.4). Do not remove t

26、he 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 separatecontrolled drying oven, a preconditioning oven, or the envi-ronmental test ch

27、amber.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 horizontal pointer to each specimen at the 900mm (35.0 in.) mark as in

28、dicated 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 to 20 62C (68 6 4F). Usea uniform rate of change of 10% RH/h and 1.5 C

29、/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 +/- 2C (90 +/-4F). Use a uniform rate of change of 5% RH/h and 0.75C/h(1

30、.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 weights from the specimens, and the specimens from theframe.11. Report

31、11.1 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 layout):11.2.1 The manufacturers name, the style, the fiber contentof th

32、e 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.11.2.3 The pointer measurements at the end of the humidand dry phases of the test cycle for both the length and thewidth spec

33、imens (four readings each over two cycles).11.2.4 If any of the specimens became stable during the test.11.2.5 Any discoloration, bubbling or curling of the speci-mens recorded.D 6207 03 (2007)2FIG.1SpecimenFrameD 6207 03 (2007)3FIG.2SpecimensMountedinSpecimenFrameD 6207 03 (2007)411.3 Any report la

34、yout 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 standarddeviation was 0.8 mm (0.03 in.).12.2 BiasThe procedure in this test method f

35、or 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 change; fabric; humidity; temperatureASTM International takes no position

36、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 validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.Th

37、is standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Int

38、ernational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown

39、 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 multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).FIG. 3 Example of Report LayoutD 6207 03 (2007)5