1、Designation: C 1620 05Standard Specification forAerosol Polyurethane and Aerosol Latex Foam Sealants1This standard is issued under the fixed designation C 1620; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the types, grades, and physicalproperties of aerosol polyurethane and aerosol latex foamsextruded fro
3、m pressurized containers and intended for buildingenvelope air barrier sealant applications in building construc-tion.1.2 For specific aerosol foam sealant applications, opera-tional temperature limit criteria shall be as agreed uponbetween the aerosol sealant manufacturer and the purchaser.1.3 The
4、values in SI units are to be regarded as standard.The values shown in parentheses are for information andapproximation only.1.4 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.1.5 This standard does not purport to address a
5、ll 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 requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology
6、Relating to Thermal InsulationC 390 Practice for Sampling and Acceptance of PreformedThermal Insulation LotsC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 717 Terminology of Building Seals and SealantsC 1536 Test Method for Measuring the
7、Yield for AerosolFoam SealantsD 883 Terminology Relating to PlasticsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 283 Test Method for Determining the Rate ofAir LeakageThrough Exterior Windows, Curtain Walls and DoorsUnder Specified Pressure Differences Across the Specime
8、nIEEE/ASTM SI 10 American National Standard for Use ofthe International System of Units (SI) (The ModernizedMetric System)2.2 Other Documents:SPFA Document AY119 Glossary of Terms Common to thePolyurethane Foam Industry3CAN/CGSB 51.93 Air Barrier Materials4CAN/ULC-S710.1 Proposed Standard for Therma
9、lInsulation-Bead-Applied One-Component PolyurethaneAir Sealant Foam, Part 1, Section 6.5.1, “Air Permeance”549 Code of Federal Regulations 178.335UL 723 Surface Burning Characteristics for Materials Usein Plenums63. Terminology3.1 Definitions: For definitions of terms used in this speci-fication, re
10、fer to Terminologies C 168, C 717, D 883, andSPFA AY119. (SPFA stands for Spray Polyurethane FoamAlliance.33.1.1 tack-free time, nas defined in 10.2.3.1.2 trim time, nas defined in 10.2.4. Classification4.1 Type I Aerosol Polyurethane Foam Sealants in contain-ers one liter or less.4.2 Type II Aeroso
11、l Latex Foam Sealants in containers oneliter or less.1This specification is under the jurisdiction of ASTM Committee C24 onBuilding Seals and Sealants and is the direct responsibility of Subcommittee C24.61on Aerosol Foam Sealants.Current edition approved Sept. 1, 2005. Published October 2005.2For r
12、eferenced 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.3Available from the Spray Polyurethane Foam Alliance, 440 Fair Lake
13、s Court,Suite 105, Fairfax, VA 22033.4Available from the Canadian Standards Association, 5060 Spectrum Way, Suite100, Mississauga, ON L4W 5N6 Canada.5Available from U.S. Government Printing Office, Superintendent of Docu-ments, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.6Available
14、from Underwriters Laboratories (UL), Corporate Progress, 333Pfingsten Rd., Northbrook, IL 60062.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.3 Grade 1 Aerosol Foam Sealants contain flammable gasblowing agent or propellant, or bo
15、th, and are classified as aflammable aerosol by DOT.4.4 Grade 2 Aerosol Foam Sealants contain nonflammableblowing agent or propellants, or both, and are not classifiedflammable.5. Ordering Information5.1 Orders for materials purchased under this specificationshall include the following information:5
16、.1.1 Manufacturer,5.1.2 Product identification information or product name5.1.3 ASTM Specification C 1620,5.1.4 Product classification (see Section 4),5.1.5 Certificate of compliance (if required),5.1.6 Ordering date,5.1.7 Target delivery date,5.1.8 Special packaging or handling (if required),5.1.9
17、Special markings (if required), and5.1.10 Special compliance information, as applicable for theuser.5.2 Purchases for governmental agencies shall comply withtheir special needs.6. Materials and Manufacture6.1 Aerosol polyurethane foam sealants are produced by thecatalyzed chemical polymerization rea
18、ction of proprietarychemical formulations and appropriate blowing agents. Theproduct of this reaction is bead extruded from pressurizedcontainers through a nozzle device at the point of application toa building joint as a foamed sealant material. Bead foam curingis achieved with atmospheric moisture
19、.6.2 Aerosol latex foam sealants are produced by the blend-ing of proprietary formulations and appropriate blowingagents. This mixture is bead extruded from pressurized con-tainers through a nozzle device at the point of application to abuilding joint as foamed sealant material. Bead foam dryingthen
20、 continues over a brief period of time with the loss offormulation moisture.6.3 The aerosol foam sealant product shall be suitable forshelf-stable pressurized containment, ready to dispense.6.4 In most field applications, the aerosol foam sealant isfoamed-in-place directly into open joints and cavit
21、ies inbuilding envelope wall and roof areas by consumers or trainedprofessionals to resist the undesirable transmission of moisture,conditioned air, heat, and atmospheric air infiltration/exfiltration of gases and heat energy.7. Physical Requirements7.1 Aerosol foam sealants shall have guide physica
22、l prop-erty characteristics as shown in Table 1.7.2 Other physical properties shall be specified as agreedupon between the manufacturer and the purchaser, if requiredfor engineering design purposes, such as the anticipation ofservice temperature extremes and conductive thermal resis-tance values.NOT
23、E 1While apparent foam density is not a specification require-ment here, its determination using data obtained in Test Method C 1536may be beneficial for field quality control purposes (calculate foamweight/foam volume and report apparent density in kg/m3and lb/ft3).8. Sampling8.1 For the purposes o
24、f sampling, the lot shall consist of allthe single-use containers of sealant purchased and delivered atone time.8.2 Sampling for inspection tests, if required, shall be forphysical properties agreed upon between sealant manufacturerand purchaser.8.3 Refer to Practice C 390 for sampling practices asa
25、ppropriate.TABLE 1 Properties of Aerosol Foam SealantsPhysical Property Test Method Type I Grade 1 Type I Grade 2 Type II Grade 1Linear yield C 1536 Report value forproductreport value for product report value for productAir permeability (max flow rate) E 283 1.5 L/(s m2)(0.3ft3/(minft2)1.5 L/(s m2)
26、 (0.3ft3/(minft2)1.5 L/(s m2) (0.3ft3/(minft2)0.02 L/(s m) (0.01 ft3/(min ft)0.02 L/(s m) (0.01 ft3/(min ft)0.02 L/(s m) (0.01 ft3/(min ft)Apparent aged R valueper thickness of 2.54 cm/1.00in. (min allowed value)C 518 0.048 W/m (3.0 ft2hF/Btu)0.048 W/m (3.0 ft2hF/Btu)0.048 W/m (3.0 ft2hF/Btu)Tack-fr
27、ee time (max) see 10.2 30 min. 30 min. 30 min.Trim time (max) see 10.2 2h 2h N/AFlame spread index E84 as labeled as labeled as labeledSmoke index E84 as labeled as labeled as labeledPost-dispensing expansion/contractionAconsultmanufacturerconsult manufacturer consult manufacturer consult manufactur
28、erShear strength (adhesion)Aconsultmanufacturerconsult manufacturer consult manufacturer consult manufacturerTensile strength (adhesion) consultmanufacturerconsult manufacturer consult manufacturer consult manufacturerShelf life (can) min stored in standardlaboratory C/RH12 months 12 months 12 month
29、sFreeze/thaw resistance (can)AconsultmanufacturerN/A N/A 3 cyclesASubcommittee C24.61 continues to develop standardized ASTM International test methods for these properties. Until consensus standards are established for thesetest methods, consult with product manufacturers regarding their product va
30、lues and the test methods used.C16200529. Test Specimen Preparation9.1 Aerosol foam sealant specimens for physical propertytesting shall be made in accordance with the manufacturersrecommendations.9.1.1 Pressurized containers shall be conditioned for 48 hunder controlled temperature and humidity env
31、ironment con-ditions before the extrusion of foam sealant beads onto anapproved substrate surface.9.1.2 Unless otherwise specified and reported, the con-trolled environment conditions shall be 23 6 2C and 50 65 % RH.9.1.3 Replicate testing specimens shall be of sufficientquantity and dimensions to s
32、atisfy specific test requirements.10. Test Methods10.1 YieldDetermine linear bead and volumetric yield foraerosol foam sealants in accordance with Test Method C 1536.Refer to Note 1 regarding apparent density calculated fromdata obtained in this test method.10.2 Tack-free Time and Trim TimeDetermine
33、 aerosolfoam sealant curing times by subjective visual observations,using a clean, flat, wooden tongue depressor, a sharp box-cutterknife, and a 30 cm (11.81 in.) length of 1 cm (0.39 in.) diameterbead foam sealant freshly dispensed under standard laboratoryconditions of temperature and humidity (Re
34、ference TestMethod C 1536). Begin timing observations and periodicallytouch the foam bead surface with the clean, flat, tonguedepressor surface until the bead surface no longer adheres aftergentle contact pressure. Report the elapsed time, to the nearestminute, as “tack-free” time. Then, cut through
35、 the bead at1min intervals until the knife blade is free of wet (sticky)sealant foam. Record that time as “trim time.”10.3 Flame SpreadWhen required, determine spread offlame characteristics in accordance with Test Method E84(note that foam sealants are tested in the “Caulkings andSealants” methodol
36、ogy rather than the “Foamed Plastics”methodology). Foam sealants are typically tested as nominal 2cm (34-in.) diameter beads laid down in strips on cementitiousboard, with the percent coverage of foam beads per surfacearea of board reported.NOTE 2Typically, bead foam sealants are flamed spread teste
37、d withthree 2 cm (34-in. diameter beads of sealant foam placed 25 cm (12 in). oncenter, covering 12.5 % of the exposed sample area. UL 723 test methodresults are often substituted and accepted as equivalent to E84 testmethods by regulatory authorities.10.4 Smoke IndexSee 10.3 for Smoke Index (SmokeD
38、eveloped) by light obscuration in accordance with TestMethod E84.10.5 Thermal ResistanceDetermine apparent thermal re-sistance of aerosol sealant foams using a mean temperature of23.8C (thermal insulation convention) and test after condi-tioning specimens for not less than three days in a 23 62.8C/5
39、0 6 5 % RH controlled-air environment. Prepare testspecimens by laying down adjacent 2 cm (34-in.) nominaldiameter beads of aerosol bead foam sealant onto a flat 36 by36 cm (14 by 14 in.) nominal poly-covered cardboard; curesample for 24 h and trim down to 25 by 25 by 2.5 cm (12 by12 by 1 in.) seala
40、nt specimens by band saw before testing.Report thermal resistance of sealant in SI units (inch/poundunits).10.6 Post Dispensing Expansion or ContractionSubcommittee C24.61 continues to develop a standardized testmethod for this important physical property. Until a consensusstandard is established, c
41、onsult product manufacturers regard-ing their product values and test method.10.7 Air Infiltration or PermeanceSubcommittee C24.61continues to develop a standardized sample preparation prac-tice for this important physical property. Until a consensusstandard is established, consult product manufactu
42、rers regard-ing their product values and test method. References areprovided to Canadian General Standards Board (GCSB) docu-ment CAN/CGSB 51.93 “Air Barrier Materials,” UnderwritersLaboratories of Canada (National Standard of Canada) docu-ment CAN/ULC-S710.1 “Proposed Standard for ThermalInsulation
43、-Bead-Applied One Component Polyurethane AirSealant Foam, Part 1 Material Specification,” Section 6.5.1,“Air Permeance,” and Test Method E 283.10.8 Shear Strength (Adhesion)Subcommittee C24.61continues to develop a standardized sample preparation prac-tice for this important physical property. Until
44、 a consensusstandard is established, consult product manufacturers regard-ing their product values and test method10.9 Tensile Strength (Adhesion)Subcommittee C24.61continues to develop a standardized sample preparation prac-tice for this important physical property. Until a consensusstandard is est
45、ablished, consult product manufacturers regard-ing their product values and test method.10.10 Shelf Life (of Unused Pressurized Product inContainer)Determine product shelf life by subjective obser-vation after shelf storage in a controlled air environment(standard laboratory air, see 9.1.2). After s
46、uch storage, accept-able bead foam sealant shall extrude from its container at a ratesuch that a continuous bead of quality product is obtained at arate to fill gaps and cracks effectively, that is, product suitablefor the uses intended.10.11 Freeze-Thaw Resistance (of Unused PressurizedProduct in C
47、ontainer)Subcommittee C24.61 continues todevelop a standardized test for this important physical prop-erty. Until a consensus standard is established, consult aerosolfoam sealant manufacturers regarding their product values andtest method.11. Packaging and Package Marking11.1 Unless otherwise specif
48、ied or agreed upon betweenmanufacturer and buyer, the fluid components of aerosol foamsealant shall be packaged in the manufacturers standardcommercial containers.11.1.1 Aerosol foam sealants conforming to this specifica-tion shall be packaged in containers not exceeding 1 L in fluidcapacity.11.1.2
49、Sealant containers shall meet the requirements ofD.O.T. 49 Code of Federal Regulations 178.33 Spec. 2P orSpec. 2Q or both.11.2 Each container shall be marked with the followinginformation:11.2.1 Manufacturers name and address,C162005311.2.2 Manufacturers product designation and productioncode date,11.2.3 ASTM Specification C 1620 compliance,11.2.4 Manufacturers lot number, date of production orexpiration date, or both,11.2.5 Net weight of the container contents,11.2.6 Instructions for safe handling practices and storageenvironment,11.2.7 Ap
