1、Designation: C1737 10Standard Guide forEvaluating Temperature Effects to Aerosol Foam SealantDuring and After Dispensing1This standard is issued under the fixed designation C1737; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 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 guide covers the general effects of temperatureduring the use temperatures for aerosol foam sealant (eit
3、herpolyurethane or latex types).1.2 The guide is intended to estimate the observed productdispensing character and foam quality of aerosol foam dis-pensed or cured, or both, at specific temperatures.1.3 Such foam sealants are used for a variety of end useapplications primarily intended to reduce air
4、 movement inbuilding enclosures.1.4 Currently two main foam sealant types are applicable tothis standard, single component polyurethane and latex types.1.5 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.6 There are no other k
5、nown test methods specific formeasuring the product temperature range for aerosol foamsealant.1.7 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 pra
6、ctices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1620 Specification for Aerosol Polyurethane and AerosolLatex Foam Sealants3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cure temperatureset temperature
7、of the chamberused for curing the foam sealant. Also called the ambient airtemperature for purposes of this guide.3.1.2 friabilitythe property of a cured or semi curedfoamed cellular material which permanently deforms andcrumbles to a powder like consistency after a light finger forceis applied to t
8、he material surface.3.1.3 product temperaturetemperature of the foam sealantin its original container after 24 h incubation.3.1.4 product use temperatureone measurement from theoutcome of this guide. The product use temperature is com-posed of two metrics as defined above, that is, the producttemper
9、ature itself and the ambient air temperature during thecure.3.1.5 tack free timesee Specification C1620.4. Summary of Guide4.1 ProcedureSelect the desired temperatures to measurefoam sealant specimens for “test product temperature” and“test-cure temperature.” A product for example could be testedat
10、a product temperature of 5C, and a cure temperature(ambient air temperature) of 0C.4.1.1 Specimens from a completely filled aerosol contain-ers are dispensed at specified size and as bead segments.4.1.2 Product temperature is maintained at selected “prod-uct temperature” prior to testing at the sele
11、cted “cure tempera-ture” (which may be the same or different than the producttemperature).4.1.3 Foam products are evaluated for flow rate, tack freetime, friability, and skin and cell appearance as describedherein.5. Significance and Use5.1 This guide is not intended to measure the precisetemperatur
12、e range for dispensing and curing product under allthe possible substrate and environmental factors but to providea basis for benchmarking a foam sealant product under specificlaboratory conditions.5.2 The product user is encouraged to evaluate each appli-cation and determine suitability for actual
13、use.1This guide is under the jurisdiction ofASTM Committee C24 on Building Sealsand Sealants and is the direct responsibility of Subcommittee C24.61 on AerosolFoam Sealants.Current edition approved June 1, 2010. Published August 2010. DOI: 10.1520/C173710.2For referenced ASTM standards, visit the AS
14、TM 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Unit
15、ed States.6. Apparatus6.1 Two test chambers, capable of controlling temperaturefrom 15 to 45C within 62C.6.2 Smooth brown wrapping paper, without coatings (7.5 by25 cm).7. Test Specimens and Substrates7.1 Condition and prepare all test products at selectedproduct conditions.7.2 Condition and prepare
16、 all test substrates at selectedcuring conditions.7.3 For each product tested it is essential to follow themanufacturers label directions and to use the dispenser sup-plied with the product. One full aerosol can of product isneeded for this test.8. Conditioning8.1 Condition filled aerosol cans of fo
17、am sealant and sub-strates under standard laboratory conditions of 23 6 2C and50 6 5 % relative humidity prior to the selected test chamberconditioning (see 9.1 and 9.2).9. Procedure9.1 Condition substrates at the selected “cure temperature”for 24 h.9.2 Condition aerosol foam cans at the selected “p
18、roducttemperature” for 24 h.9.3 Shake the can vigorously for 30 s or as recommended inthe products instructions.9.4 Weigh the full can of foam sealant without the cap butwith the dispensing mechanism attached and record the startingweight.9.5 After 24 h, remove the foam aerosol product containerfrom
19、 the product conditioning chamber and immediately dis-pense a 1-cm diameter by 8-cm long foam sealant bead (or anydesired test specimen size) onto the Kraft Paper while the paperis still in the curing test chamber. Close the door within5sofopening the curing chamber.9.6 Note the approximate flow rat
20、e time and quality of foamsealant flow relative to dispensing at 23C with 1 (lowest flow)and 5 (highest flow), for example, (1 = no flow; 2 = very slow;3 = normal (flow rate at 23C); 4 = fast; 5 = very fast) in datasheet.9.7 After 2 h, open the curing chamber and check foam forfriability and tack fr
21、ee by pressing into the foam with a nitrileor latex type surgical gloved finger. Close the door within 5 s.NOTE 1All measurements in 9.6 through 9.9 are based on internalstandards created by the analyst for the specific product under test.9.8 Recheck friability and tack free (see SpecificationC1620
22、for tack free) again in another hour by opening thecuring chamber door for no more than 5 s.9.9 After 24 h, do a final check for friability and tack fee andremove the samples from the test chamber to room tempera-ture. Rank and average skin appearance from 1 (worst) 5(best) for all test specimens co
23、mpared to skin appearance at23C and 50 % RH. Also cut through the final cured foamsealant specimens with a box cutter or sharp knife in twodirections to evaluate the internal foam cell structure. Rank andaverage internal foam sealant cell structure for all specimensfrom 1 (worst) 5 (best) as compare
24、d to skin appearance at23C and 50 % RH.9.9.1 WarningThe opening and closing of the chamberdoor must be minimized during the test and between the secondand the third hour as some foams loose the friability extremelyfast as the temperature rises above a critical temperature evenmomentarily. It is desi
25、rable to run a recording temperaturedevice that continuously monitors to temperature as close aspossible to the sample in the chamber.FRIABILITY TABLE 1Test Time Duration YES NOFriable at 2 hFriable at 3 hFriable at 24 hTACK FREE TABLE 2Test Time Duration YES NOTack Free at 2 hTack Free at 3 hTack F
26、ree at 24 hOTHER DATA RANKING TABLE 3Test Rank 12345Skin AppearanceInternal Cell StructureRelative Flow Rate10. Report10.1 Complete name or designation of product tested.10.2 Label statement of the size or contents of the aerosol inunits of grams, weight ounces, or milliliters, etc.10.3 Statement of
27、 the dispensing direction for the productcontainer, upright or inverted.10.4 Date of initiation of the test.10.5 Date of report.10.6 Expiration date of product tested.10.7 Diameter and length of the test specimen bead.10.8 Approximate Flow rate: very slow, slow, normal, fast,none at test “product te
28、mperature” compared to flow rate at23C.10.9 Tack free: state whether foam sealant specimens weretack free after1hatthecure-temperature condition.10.10 Skin appearance rank (15) of the foam sealant after24 h at “cure temperature” compared to cell appearance at 23Cand 50 % RH compared to skin appearan
29、ce at 23C and 50 %RH: rank (15) of the foam sealant after 24 h at “curetemperature.”10.11 Internal cell appearance rank (15) of the foamsealant after 24 h at “cure temperature” compared to cellappearance at 23C and 50 % RH.10.12 Friability state (friable or not friable) of the foamsealant after1hat“
30、cure temperature.”10.13 Friability state (friable or not friable) of the foamsealant after2hat“cure temperature.”10.14 If a product is tested at multiple temperatures andmeets the expected performance levels, the minimum ProductUse Temperature can be reported in the following format:“This foam seala
31、nt tested under the laboratory conditionsC1737 102herein and the internal standards employed suggests a Mini-mum Ambient Use Temperature of XC and a MinimumProduct Temperature of YC.”10.15 A statement that the test or tests were conducted inaccordance with this Guide C1737.11. Keywords11.1 aerosol;
32、aerosol foam; air barrier foam sealant; airexfiltration; air infiltration; foam sealant; latex foam sealant;polyurethane foam sealantASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standar
33、d 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 andif
34、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 committee, whic
35、h 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,Un
36、ited 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C1737 103
