1、Designation: C1559 15Standard Test Method forDetermining Wicking of Fibrous Glass Blanket Insulation(Aircraft Type)1This standard is issued under the fixed designation C1559; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、 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 a laboratory procedure forevaluating the tendency of, aircraft type, fibrous glass blanket
3、insulation to wick water.1.2 The wicking characteristics of materials can be affectedby environmental conditions such as temperature and humidity.Values obtained as a result of this test method does notadequately describe the wicking characteristics of materialssubject to conditions other than those
4、 indicated in the testmethod. (See Specification C800.)1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not pur
5、port 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-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1
6、68 Terminology Relating to Thermal InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC800 Specification for Fibrous Glass Blanket Insulation(Aircraft Type)E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Terminology3.1 Defi
7、nitionsTerminology C168 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 bo
8、ttom 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
9、 the 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 cu
10、t with the axisperpendicular to the length from a representative package.(SeePractice C390.)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 t
11、his 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 axis1This test method is under the juris
12、diction ofASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.33 on InsulationFinishes and Moisture.Current edition approved March 1, 2015. Published June 2015. Originallyapproved in 2003. Last previous edition approved in 2009 as C1559 04(2009).DOI: 10.1520/
13、C1559-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive,
14、 PO Box C700, West Conshohocken, PA 19428-2959. United States1perpendicular to the length)3to a grease-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-i
15、n. sampledimension is in a perpendicular direction to the water surface.The specimens must not touch each other 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 wa
16、ter to facilitate marking the extentof wicking). The water shall be at 68 6 4F (20 6 2C).9.4 Position the remaining 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 w
17、ater at 120 6 5F (50 62C) by using a hot plate.9.5 Note distance of wicking above water surface with steelrule 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 in
18、sulation 8- by 14-in. (203- by356-mm) in a forced air circulating oven at 160 6 5F (71 63C) for two weeks or 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
19、-mm) by submerging in an immersion tank of de-ionized(or distilled) water maintained at a temperature of 80 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
20、water. Ratio of specimen to water shall not be less than 1to 100 by weight. A continuous flow of water shall 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
21、 to aconstant weight and weighed. The leached specimen shall betested according to procedure outlined in 9.2 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 wickingsp
22、ecimens is permissible. Wicking is the distance of wettingabove the water surface (average value of center-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 forma
23、tion of beads of water on the insulationsurface indicates water repellency.12.4 Surface wetting is not considered 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
24、 the mate-rial tested,13.1.2 Thickness of the material,13.1.3 Number of specimens tested, and13.1.4 The average 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 materia
25、l (0.42 pcf by 1 in.) were tested for wicking in eachof five laboratories with each laboratory testing three speci-mens per configuration. Practice E691 was followed for thedesign and analysis of the data.Asingle laboratory provided allof the test specimens. The details are given in ASTM ResearchRep
26、ort RR: RR:C16-10285.14.2 Test ResultThe precision information shown belowin units of measurement noted is for 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 C1159 for meas
27、uring wicking,because no material having an accepted reference value isavailable.15. Keywords15.1 aircraft; aircraft insulation; fibrous glass insulation;wicking3An alternative attachment method would be to attach the specimens to the wiremesh using a hot melt adhesive (at approximately12 in. below
28、and above the waterline, and approximately12 in. from the top of the specimen).4Dye should 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 Re
29、port RR: RR:C16-1028.FIG. 1 Typical Specimen Mounting for Wicking TestC1559 152ASTM 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 vali
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34、222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Water Repellency Round Robin Statistical ResultsUsing Standard E691CellAver-ageStandardDeviationof the CellAveragesRepeat-abilityStandardDeviationReproducibil-ityStandardDeviationRepeat-abilityLimitAReproducibil-ityLimitBX bar SxSrSRrR0.22in.0.11 0.07 0.11 0.18 0.30A95 % confidence = 2.8 SrB95 % confidence = 2.8 SRC1559 153
