1、Designation: C 1559 04Standard Test Method forDetermining Wicking of Fibrous Glass Blanket Insulation(Aircraft Type)1This standard is issued under the fixed designation C 1559; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar 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 a laboratory procedure forevaluating the tendency of, aircraft type, fibrous glass blan
3、ketinsulation to wick water.1.2 The wicking characteristics of materials may be affectedby environmental conditions such as temperature and humidity.Values obtained as a result of this test method may notadequately describe the wicking characteristics of materialssubject to conditions other than tho
4、se indicated in the testmethod. (See Specification C 800.)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 the applica-bil
5、ity of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal InsulationC 390 Practice for Sampling and Acceptance of PreformedInsulation LotsC 800 Specification for Fibrous Glass Blanket Insulation(Aircraft Type)3. Terminology3.1 Definit
6、ionsTerminology C 168 shall be considered asapplying to the terms used in this specification.3.1.1 wickingthe infiltration of a wetting liquid into afibrous glass blanket by capillary attraction.4. Summary of Test Method4.1 The insulation is suspended in de-ionized or distilledwater so that the bott
7、om of the specimen is submerged to oneinch below the water surface; distance of wicking is notedevery 24 h for 96 h and then again at the end of 168 h.5. Significance and Use5.1 The tendency of the insulation toward wicking canresult in an increase in weight and a resultant potentialdegradation in t
8、he properties of the insulation.6. Apparatus6.1 As described in the Procedure section of this testmethod.6.2 Steel Rule, accurate to 6 0.05 in. (1 mm).7. Sampling, Test Specimens, and Test Units7.1 Six specimens shall be tested for each procedure, cutwith the axis parallel to the length and six cut
9、with the axisperpendicular to the length from a representative package.(SeePractice C 390.)7.2 The specimens shall be 1- by 6-in. (25.4- by 152.4-mm)by full sample thickness.7.3 The insulation shall be tested without facing or jacket-ing.8. Conditioning8.1 As described in the Procedure section of th
10、is testmethod.9. Procedure AWicking as Received9.1 Condition specimens for at least 24 h at 73 6 4F (23 62C) and 50 6 5 % relative humidity.9.2 With fine wire, fasten loosely six specimens (three cutwith the axis parallel to the length and three cut with the axisperpendicular to the length)3to a gre
11、ase-free 0.025 to 0.035 in.(0.64 to 0.89 mm) 8 by 8 mesh stainless steel wire screen.Position this assembly in an upright position so the ends of thespecimens touch the bottom of the container. The 6-in. sample1This test method is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and
12、 is the direct responsibility of Subcommittee C16.33 on InsulationFinishes and Moisture.Current edition approved Sept. 1. 2004. Published October 2004. Originallyapproved in 2003. Last previous edition approved in 2003 as C155903.2For referenced ASTM standards, visit the ASTM website, www.astm.org,
13、orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3An alternative attachment method would be to attach the specimens to the wiremesh using a hot melt adhesive (at approximately12 in
14、. below and above the waterline, and approximately12 in. from the top of the specimen).1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.dimension is in a perpendicular direction to the water surface.The specimens must not touch each o
15、ther or the sides of thecontainer (Fig. 1).9.3 Pour de-ionized (or distilled) water into the container toa height of 1-in. (25-mm) (Optional: add dye4to the water1to 2 drops per liter to the water to facilitate marking the extentof wicking). The water shall be at 68 6 4F (20 6 2C).9.4 Position the r
16、emaining six specimens similarly in an-other container. Pour de-ionized (or distilled) water into thiscontainer to a height of 1-in. (25-mm), again adding dye.Maintain the temperature of this water at 120 6 5F (50 62C) by using a hot plate.9.5 Note distance of wicking above water surface with steelr
17、ule every 24 h in each container for the first 96 h. Then noteagain after 168 h. Replenish the water daily to maintain waterlevel.10. Procedure BWicking after Aging10.1 Condition a sample of insulation 8- by 14-in. (203- by356-mm) in a forced air circulating oven at 160 6 5F (71 63C) for two weeks o
18、r at least 336 h. The aged specimen shallbe tested according to procedure outlined in 9.2-9.5.11. Procedure CWicking after Leaching11.1 Condition a sample of insulation 8- by 14-in. (203- by356-mm) by submerging in an immersion tank of de-ionized(or distilled) water maintained at a temperature of 80
19、 to 85F(27 to 29C) for a period of at least 24 h. The tank shall be ofsuch a shape and size that the specimen can be submergedtherein with all surfaces of the specimen having full access tothe water. Ratio of specimen to water shall not be less than 1to 100 by weight. A continuous flow of water shal
20、l be suppliedto the bottom of the container at the above temperature at a rateof five changes per hour. At the end of the leaching period, thespecimen shall be removed from the water, air dried to aconstant weight and weighed. The leached specimen shall betested according to procedure outlined in 9.
21、2-9.5.12. Calculation or Interpretation of Results12.1 Determine the amount of wicking by measurementwith a steel rule as described in 6.2.12.2 Wetting of the submerged portion of the wickingspecimens is permissible. Wicking is the distance of wettingabove the water surface (average value of center-
22、point mea-surements of three sides of the wicking specimen-side adjacentto screen surface should not be measured).12.3 Beads of water are not to be construed as a condition ofwetting. The formation of beads of water on the insulationsurface indicates water repellency.12.4 Surface wetting is not cons
23、idered wicking, but cannotbe greater than 1 in. (25.4 mm) when measured from the waterline.13. Report13.1 The report shall include the following:13.1.1 Name and any additional identification of the mate-rial tested,13.1.2 Thickness of the material,13.1.3 Number of specimens tested, and13.1.4 The ave
24、rage wicking height according to each con-dition.14. Precision and Bias14.1 Inter-laboratory Test ProgramAn inter-laboratorystudy was run in which randomly selected test specimens ofone material (0.42 pcf by 1 in.) were tested for wicking in eachof five laboratories with each laboratory testing thre
25、e speci-mens per configuration. Practice E 691 was followed for thedesign and analysis of the data. A single laboratory provided allof the test specimens. The details are given in ASTM ResearchReport RR:C16-10285.14.2 Test ResultThe precision information shown belowin units of measurement noted is f
26、or the comparison of onematerial and based on an average of 3 tests.14.3 PrecisionSee Table 1.14.4 BiasNo information can be presented on the bias ofthe procedure in Test Method C 1159 for measuring wicking,because no material having an accepted reference value isavailable.4Dye such as “Key Acid Blu
27、e” distributed by Chem Central Corporation. Dyeshould be tested to insure that the surface tension of water is not reduced(approximately 72 dynes/ cm).5Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR: C16-1028.FIG. 1 Typical Spec
28、imen Mounting for Wicking TestTABLE 1 Water Repellency Round Robin Statistical ResultsUsing Standard E 691CellAverageStandardDeviationof the CellAveragesRepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitAReproducibilityLimitBX bar SxSrSRrR0.22 in. 0.11 0.07 0.11 0.18 0.
29、30A95 % confidence = 2.8 SrB95 % confidence = 2.8 SRC155904215. Keywords15.1 aircraft; aircraft insulation; fibrous glass insulation;wickingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this
30、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.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years
31、 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 International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committe
32、e, 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 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).C1559043
