1、Designation: C1737 10 (Reapproved 2016)C1737 16Standard 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
2、 the case 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 temperature during the use temperatures fo
3、r aerosol foam sealant (eitherpolyurethane or latex types).1.2 The guide is intended to estimate the observed product dispensing character and foam quality of aerosol foam dispensed orcured, or both, at specific temperatures.temperatures and standard conditions.1.3 Such foam sealants are used for a
4、variety of end use applications primarily intended to reduce air movement in buildingenclosures.1.4 Currently two main foam sealant types are applicable to this standard, single component polyurethane and latex types.1.5 The values stated in SI units are to be regarded as standard. No other units of
5、 measurement are included in this standard.1.6 There are no other known test methods specific for measuring the product temperature range for aerosol foam sealant.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the
6、 user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1620 Specification for Aerosol Polyurethane and Aerosol Latex Foam SealantsC717 Terminology of Building Seals
7、and Sealants3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cure temperatureset temperature of the chamber used 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 cured foamed cellular
8、material which permanently deforms and crumbles to apowder like consistency after a light finger force is applied to the material surface.3.1.3 product temperaturetemperature of the foam sealant in its original container after 24 h incubation.3.1.4 product use temperatureone measurement from the out
9、come of this guide. The product use temperature is composed oftwo metrics as defined above, that is, the product temperature itself and the ambient air temperature during the cure.3.1.5 tack free timesee Specification C1620.3.1.6 A definition of the following term is found in Terminology C717: stand
10、ard conditions.4. Summary of Guide4.1 ProcedureSelect the desired temperatures to measure foam sealant specimens for “test product temperature” and“test-cure temperature.” A product for example could be tested at a product temperature of 5C, and a cure temperature (ambientair temperature) of 0C.1 Th
11、is guide is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.61 on Aerosol FoamSealants.Current edition approved Jan. 15, 2016July 15, 2016. Published March 2016August 2016. Originally approved in 2010. Last previous edi
12、tion approved in 20102016 asC1737-10. -10 (2016). DOI: 10.1520/C173716.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the AST
13、M website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult
14、 prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.1 Specimens from a completely fill
15、ed aerosol containers are dispensed at specified size and as bead segments.4.1.2 Product temperature is maintained at selected “product temperature” prior to testing at the selected “cure temperature”(which may be the same or different than the product temperature).4.1.3 Foam products are evaluated
16、for flow rate, tack free time, friability, and skin and cell appearance as described herein.5. Significance and Use5.1 This guide is not intended to measure the precise temperature range for dispensing and curing product under all the possiblesubstrate and environmental factors but to provide a basi
17、s for benchmarking a foam sealant product under specific laboratoryconditions.5.2 The product user is encouraged to evaluate each application and determine suitability for actual use.6. Apparatus6.1 Two test chambers, capable of controlling temperature from 15 to 45C within 62C.6.2 Smooth brown wrap
18、ping paper, without coatings (7.5 by 25 cm).7. Test Specimens and Substrates7.1 Condition and prepare all test products at selected product conditions.7.2 Condition and prepare all test substrates at selected curing conditions.7.3 For each product tested it is essential to follow the manufacturers l
19、abel directions and to use the dispenser supplied withthe product. One full aerosol can of product is needed for this test.8. Conditioning8.1 Condition filled aerosol cans of foam sealant and substrates under standard laboratory conditions of 23 6 2C and 50 65 % relative humidity conditions prior to
20、 the selected test chamber conditioning (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 “product temperature” for 24 h.9.3 Shake the can vigorously for 30 s or as recommended in the products instructio
21、ns.9.4 Weigh the full can of foam sealant without the cap but with the dispensing mechanism attached and record the startingweight.9.5 After 24 h, remove the foam aerosol product container from the product conditioning chamber and immediately dispensea 1-cm diameter by 8-cm long foam sealant bead (o
22、r any desired test specimen size) onto the Kraft Paper while the paper is stillin the curing test chamber. Close the door within 5 s of opening the curing chamber.9.6 Note the approximate flow rate time and quality of foam sealant flow relative to dispensing at 23C with 1 (lowest flow)and 5 (highest
23、 flow), for example, (1 = no flow; 2 = very slow; 3 = normal (flow rate at 23C); 4 = fast; 5 = very fast) in data sheet.9.7 After 2 h, open the curing chamber and check foam for friability and tack free by pressing into the foam with a nitrile orlatex type surgical gloved finger. Close the door with
24、in 5 s.NOTE 1All measurements in 9.6 through 9.9 are based on internal standards created by the analyst for the specific product under test.9.8 Recheck friability and tack free (see Specification C1620 for tack free) again in another hour by opening the curing chamberdoor for no more than 5 s.9.9 Af
25、ter 24 h, do a final check for friability and tack fee and remove the samples from the test chamber to roomtemperature.standard conditions. Rank and average skin appearance from 1 (worst) 5 (best) for all test specimens compared toskin appearance at 23C and 50 % RH. standard conditions. Also cut thr
26、ough the final cured foam sealant specimens with a boxcutter or sharp knife in two directions to evaluate the internal foam cell structure. Rank and average internal foam sealant cellstructure for all specimens from 1 (worst) 5 (best) as compared to skin appearance at 23C and 50 % RH.standard condit
27、ions.9.9.1 WarningThe opening and closing of the chamber door must be minimized during the test and between the second andthe third hour as some foams loose the friability extremely fast as the temperature rises above a critical temperature evenmomentarily. It is desirable to run a recording tempera
28、ture device that continuously monitors to temperature as close as possibleto the sample in the chamber.FRIABILITY TABLE 1Test Time Duration YES NOFriable at 2 hFriable at 3 hFriable at 24 hC1737 162TACK FREE TABLE 2Test Time Duration YES NOTack Free at 2 hTack Free at 3 hTack Free at 24 hOTHER DATA
29、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 size or contents of the aerosol in units of grams, weight ounces, or milliliters, etc.10.3 Statement of the dispensing d
30、irection for the product container, 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 temperature” comp
31、ared to flow rate at23C.standard conditions.10.9 Tack free: state whether foam sealant specimens were tack free after 1 h at the cure-temperature condition.10.10 Skin appearance rank (15) of the foam sealant after 24 h at “cure temperature” compared to cell appearance at 23C and50 % RH compared to s
32、kin appearance at 23C and 50 % RH: rank (15) of the foam sealant after 24 h at “curetemperature.”standard conditions skin appearance rank (15).10.11 Internal cell appearance rank (15) of the foam sealant after 24 h at “cure temperature” compared to cell appearance at23C and 50 % RH.(15).10.12 Friabi
33、lity state (friable or not friable) of the foam sealant after 1 h at “cure temperature.”10.13 Friability state (friable or not friable) of the foam sealant after 2 h at “cure temperature.”10.14 If a product is tested at multiple temperatures and meets the expected performance levels, the minimum Pro
34、duct UseTemperature can be reported in the following format: “This foam sealant tested under the laboratory conditions herein and theinternal standards employed suggests a MinimumAmbient UseTemperature of XC and a Minimum ProductTemperature ofYC.”10.15 A statement that the test or tests were conduct
35、ed in accordance with this Guide C1737.11. Keywords11.1 aerosol; aerosol foam; air barrier foam sealant; air exfiltration; air infiltration; foam sealant; latex foam sealant;polyurethane foam sealantASTM International takes no position respecting the validity of any patent rights asserted in connect
36、ion 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 to revision at any time by the responsibl
37、e 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. Your comments will receive careful consi
38、deration 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 copyrighted by ASTM International, 100 Ba
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