ASTM_C_1737_-_16.pdf

Designation:C173716Standard 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 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(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 and standardconditions.1.3 Such foam sealants are used for a variety of end useapplications primarily intended 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 There 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 safety 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 SealantsC717 Terminology of Building Seals and Sealants3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cure temperatureset 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 forceis 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,the producttemperature itself and the ambient air temperature during thecure.3.1.5 tack free timesee Specification C1620.3.1.6 A definition of the following term is found in Termi-nology C717:standard conditions.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 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 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 precisetemperature range for dispensing and curing product under allthe possible substrate and environmental factors but to provide1This 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 July 15,2016.Published August 2016.Originallyapproved in 2010.Last previous edition approved in 2016 as C1737-10(2016).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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 a 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 use.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 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 foam sealant an