1、Designation: C1737 10 (Reapproved 2016)Standard 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 cas
2、e of 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 guide covers the general effects of temperatureduring the use temperatures for aerosol
3、 foam sealant (eitherpolyurethane 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 inte
4、nded to reduce air 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 Th
5、ere are no other known 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 saf
6、ety and health practices 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 temperatu
7、reset temperature 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 fo
8、rceis applied to the 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,
9、 the producttemperature 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
10、could be testedat 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 t
11、esting at the selected “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
12、 precisetemperature 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 suita
13、bility for actual 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 Jan. 15, 2016. Published March 2016. Originallyapproved in 2010. Last previous editi
14、on approved in 2010 as C1737-10. DOI:10.1520/C173716.2For 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.Copyrigh
15、t ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16. 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
16、 Condition and prepare all test products at selectedproduct conditions.7.2 Condition and prepare 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 aero
17、sol can of product isneeded for this test.8. Conditioning8.1 Condition filled aerosol cans of foam 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 substrat
18、es at the selected “cure temperature”for 24 h.9.2 Condition aerosol foam cans at the selected “producttemperature” 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 atta
19、ched and record the startingweight.9.5 After 24 h, remove the foam aerosol product containerfrom 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 tes
20、t chamber. Close the door within5sofopening the curing chamber.9.6 Note the approximate flow rate 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 fa
21、st) in datasheet.9.7 After 2 h, open the curing chamber and check foam forfriability and tack free 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 f
22、or the specific product under test.9.8 Recheck friability and tack free (see SpecificationC1620 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
23、 tempera-ture. Rank and average skin appearance from 1 (worst) 5(best) for all test specimens compared 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 and
24、average internal foam sealant cell structure for all specimensfrom 1 (worst) 5 (best) as compared 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
25、 extremelyfast as the temperature rises above a critical temperature evenmomentarily. It is desirable 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
26、hFriable at 24 hTACK FREE TABLE 2Test Time Duration YES NOTack Free at 2 hTack Free at 3 hTack Free at 24 hOTHER DATA RANKING TABLE 3Test Rank 1 2 3 4 5Skin AppearanceInternal Cell StructureRelative Flow Rate10. Report10.1 Complete name or designation of product tested.10.2 Label statement of the si
27、ze or contents of the aerosol inunits of grams, weight ounces, or milliliters, etc.10.3 Statement of 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 t
28、est specimen bead.10.8 Approximate Flow rate: very slow, slow, normal, fast,none at test “product temperature” 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 aft
29、er24 h at “cure temperature” compared to cell appearance at 23Cand 50 % RH compared to skin appearance 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 cellappeara
30、nce at 23C and 50 % RH.10.12 Friability state (friable or not friable) of the foamsealant after1hat“cure temperature.”10.13 Friability state (friable or not friable) of the foamsealant after2hat“cure temperature.”C1737 10 (2016)210.14 If a product is tested at multiple temperatures andmeets the expe
31、cted performance levels, the minimum ProductUse Temperature can be reported in the following format:“This foam sealant tested under the laboratory conditionsherein and the internal standards employed suggests a Mini-mum Ambient Use Temperature of XC and a MinimumProduct Temperature of YC.”10.15 A st
32、atement that the test or tests were conducted inaccordance with this Guide C1737.11. Keywords11.1 aerosol; aerosol foam; air barrier foam sealant; airexfiltration; air infiltration; foam sealant; latex foam sealant;polyurethane foam sealantASTM International takes no position respecting the validity
33、 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.This standard is subject
34、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 International Headquarters
35、. 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 below.This standard is
36、 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 10 (2016)3
