1、Designation: C 603 04 (Reapproved 2008)Standard Test Method forExtrusion Rate and Application Life of ElastomericSealants1This standard is issued under the fixed designation C 603; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th
2、e 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method covers two
3、 laboratory procedures fordetermining the extrusion rate and application life (or “potlife”) of elastomeric chemically curing sealants for use inbuilding construction.NOTE 1These sealants are supplied with various rheological proper-ties ranging from pourable liquids to nonsagging pastes. Single-com
4、ponent sealants are supplied ready for use upon opening the container,and their rate of cure is determined by the climatic conditions to whichthey are exposed. Multicomponent sealants are supplied as a basecomponent and a curing agent separately packaged. After mixing the twoparts, the sealant is re
5、ady for application, and curing begins immediately.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are provided forinformation only.1.3 There is no known ISO equivalent to this test method.1.4 This standard does not purport to address all of thesa
6、fety 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:2C 717 Terminology of Building
7、Seals and Sealants3. Terminology3.1 DefinitionsFor definitions of terms used in testmethod, see Terminology C 717.4. Significance and Use4.1 The results obtained by this test method are simply ameasure of the time required to extrude a known volume ofsealant through a known orifice under a predeterm
8、ined pres-sure.4.2 This test method is not considered a measure of curerate.5. Apparatus5.1 Caulking Gun, 177-mL (6-fl oz) capacity, air-powered.5.2 Polyethylene Cartridge, 177-mL (6-fl oz), with the frontend having an inside diameter of 13.7 6 0.05 mm (0.540 60.002 in.).5.3 Air Supply, providing 34
9、5 kPa (50-psi) pressure andhaving the necessary connection fittings for attachment to theair-powered caulking gun.5.4 Timing Device (clock or watch), calibrated in seconds.5.5 500-mL (1-pt) Container6. Standard Test Conditions6.1 Unless otherwise specified by those authorizing thetests, standard con
10、ditions for both tests are room temperatureof 23 6 2C (73.4 6 3.6F) and 50 6 5 % relative humidity.7. Procedure7.1 Extrusion Rate of Single-Component SealantFirstcondition the unopened container for at least 16 h at standardconditions. Then place a sufficient amount of sealant into the177-mL (6-fl o
11、z) cartridge to fill it completely with the plungerin place, fully retracted. Using no nozzle on the cartridge, gunthe sealant at 345 kPa (50-psi) pressure into the 500-mL (1-pt)container, measuring the time in seconds required to empty thecartridge.NOTE 2When the printed instructions of the sealant
12、 manufacturer sorecommended, heat the sealant before extruding it into the container.7.2 Extrusion Rate or Application Life or both, of MixedMulticomponent SealantFirst condition the unopened con-tainers of both sealant and curing agent for at least 16 h at1This test method is under the jurisdiction
13、 ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved May 1, 2008. Published June 2008. Originallyapproved in 1969. Last previous edition approved in 2004 as C 603 - 04.2For referenced ASTM standard
14、s, 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
15、9428-2959, United States.standard conditions. Then mix 400 g of the sealant with theproper amount of curing agent, stirring the mixture by hand for5 min. Place a sufficient amount of the mixed compound intothe 177-mL (6-fl oz) cartridge to fill it completely with theplunger in place, fully retracted
16、, and set the filled cartridgeaside, in a vertical position, at standard conditions, for 3 h(Note 3). Then, using no nozzle on the cartridge, gun thesealant at 345 kPa (50-psi) pressure into the 500-mL (1-pt)container, measuring the time in seconds required to empty thecartridge.NOTE 3Curing times a
17、nd conditions for multi-component mixedcompounds may vary. Therefore curing periods of longer or shorter than3 h, and under other than the specified standard conditions, or either oneof these two may be specified in some cases.8. Report8.1 The report on the extrusion rate of the single-componentseal
18、ant shall state:8.1.1 The trade name (or other identification) of the sealant.8.1.2 The time, in seconds, required to empty the cartridge(the extrusion rate), and8.1.3 Any variation, specified or otherwise, from the abovedescribed test method, including heating of the sealant if sorequired.8.2 The r
19、eport on the extrusion rate or application life, orboth, of the multicomponent sealant shall state:8.2.1 The trade name (or other identification) of the sealant,8.2.2 The time, in seconds, required to empty the cartridgeafter the 3-h (or other specified) curing period, and8.2.3 Any variations, speci
20、fied or otherwise, from the abovedescribed test method, including the length of curing periodand the conditions of temperature and humidity during thisperiod.9. Precision and Bias39.1 The precision and bias calculations for this test methodare based on the results of four laboratories testing fivema
21、terials, each in triplicate. The results are given in Table 1.10. Keywords10.1 application life; extrusion rate; pot life; sealantASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard a
22、re 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 not
23、 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, which y
24、ou 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,Unite
25、d 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).3Supporting data are available from ASTM Headquarte
26、rs. Request RR: C24-1010.TABLE 1 Precision and Bias DataAMaterial AverageEstimatedStandardDeviationWithin aLaboratoryEstimatedStandardDeviationBetweenLaboratoriesRepeat-abilityInternalReproduci-bilityG1 3.6 0.32 1.24 0.91 3.40G2 2.4 0.52 1.54 1.48 4.36G3 5.3 0.30 2.37 0.86 6.70G4 6.3 2.32 6.46 6.56 18.28G5 2.1 0.22 0.89 0.62 2.51AAt 95 % confidence a variation of as much as 6.56 can be expected within alaboratory and 18.28 between laboratories.C 603 04 (2008)2
