1、Designation: C 1183 04 (Reapproved 2008)Standard Test Method forExtrusion Rate of Elastomeric Sealants1This standard is issued under the fixed designation C 1183; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. 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 test method covers two laboratory procedures fordetermining the extrusion rate of elastomeric sealants for use inbuilding
3、 construction.1.2 The values states in metric units are to be regarded asthe standard. The values in parentheses are for informationonly.1.3 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 e
4、stablish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 There is no known ISO equivalent to this test method.2. Referenced Documents2.1 ASTM Standards:2C 717 Terminology of Building Seals and SealantsD 1475 Test Method For Density
5、 of Liquid Coatings, Inks,and Related ProductsD 2452 Test Method for Extrudability of Oil- and Resin-Base Caulking Compounds3. Terminology3.1 DefinitionsSee Terminology C 717 for applicabledefinitions of the following terms: caulking, compound, elas-tomeric and nonsag sealant, sealant, latex sealant
6、.4. Significance and Use4.1 Sealants are supplied with various rheological propertiesranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon openingthe container. Multicomponent sealants are supplied as a basecomponent(s) and a curing agent separ
7、ately packaged. Aftermixing the two or more parts, the sealant is ready forapplication. This test method is intended to provide a means tomeasure the extrusion rate spanning the range of rheologicalproperties.4.2 This test method also covers the option of measuring thefreeze-thaw and heat stability
8、of such sealants.4.3 This test method provides for an option of either a metalor plastic nozzle. It is intended that the metal nozzle be usedwhen greater precision is required, such as in ASTM specifi-cations. The plastic nozzle may be used for general screeningof sealant properties or for developme
9、ntal purposes when alarge number of test specimens are being tested.4.4 This test method measures the volume of sealant ex-truded in 1 min at a given pressure (kPa or psi).5. Apparatus5.1 High Density Polyethylene Cartridge, with plunger andcap, 177 mL (6 fluid oz) capacity, with the front end havin
10、g aninside diameter of 13.7 6 0.05 mm (0.540 6 0.002 in.).5.2 Nozzle.5.2.1 Metal Nozzle, threaded to fit threaded end of polyeth-ylene cartridge with the dimensions given in Fig. 1.5.2.2 Polyethylene Cartridge Nozzle,64mm(212 in.) inlength with 3mm (18 in.) orifice5.3 Air Supply, to provide 280 6 7
11、kPa (40 6 1 psi)pressure with appropriate fittings and air lines to attach to an airpowered gun for convenience of use.5.4 Caulking Gun, 177 mL (6 fluid oz) capacity, air pow-ered.5.5 Freezer, capable of maintaining 17 6 1C (0 6 2F).5.6 Circulating Air Oven, capable of maintaining 50 6 1C(122 6 2F).
12、5.7 Time Device, a clock or stop-watch graduated in sec-onds.5.8 Small Container, can, cup, and so forth, as receiver forextruded sealant.5.9 Balance, accurate to 60.1 g (0.035 oz).5.10 Pycnometer, or suitable apparatus to obtain a specificgravity.5.11 Thermometer.1This test method is under the juri
13、sdiction 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 1991. Last previous edition approved in 2004 as C 1183-04.2For referenced ASTM s
14、tandards, 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 Conshohocke
15、n, PA 19428-2959, United States.5.12 Spatula.6. Test Conditions6.1 Unless otherwise specified by those authorizing thetests, standard conditions as defined by Terminology C 717shall be used.7. Procedure A7.1 Condition the unopened container of sealant for at least16 h at standard conditions.7.2 Dete
16、rmine the specific gravity of the sealant as de-scribed in Test Methods D 2452 or D 1475, or use anotherscientifically correct technique. For multiple component sys-tems, mix 100 g sealant (4 oz) with the proper amount ofcuring agent.NOTE 1Curing times and conditions for multicomponent mixedcompound
17、s may vary. Therefore, the length of time between mixing thecomponents and testing the extrusion rate may vary. Record the time frommix completion to the start of the extrusion test.7.3 For multiple component sealants, mix 400 g (14.1 oz)sealant with the proper amount of curing agent. Follow themixi
18、ng directions as recommended by the manufacturer.7.4 Place a sufficient amount of sealant into the polyethyl-ene cartridge to fill it completely with the plunger in place, andlevel with the back of the cartridge.NOTE 2The cartridge filling is most easily accomplished by extrudingthe sealant into the
19、 test cartridge through the nozzle end. Avoid any airentrapment as this will significantly affect the accuracy of the results.7.5 Attach the nozzle to the cartridge; connect the air supplyand immediately extrude a small amount of material tocompletely fill the nozzle. Wipe off the end of the nozzle
20、witha paper towel.7.6 Extrude the sealant at 280 6 7 kPa (40 6 1 psi) pressureinto the preweighed container (nearest 0.1 g) for 60 s. Makesure all of the material that has exited the end of the nozzle isin the container.7.7 Weigh the container to the nearest 0.1 g and subtract theinitial weight, to
21、obtain the weight of the extruded sealant.Convert the weight of the sealant to volume of sealant bydividing the weight by the specific gravity. If all the material isextruded in less than 60 s, note the length of time required andcalculate the volume of sealant that would have been extrudedin 60 s a
22、s follows:Number of gramsNumber of seconds360 seconds1 minute31specific gravity5Number of millilitersminutes8. Procedure B8.1 Subject the sealant in its original container to 5 freeze-thaw cycles, each cycle consisting of 16 h at 17 6 1C (0 62F) and8hat236 1C (73.4 6 2F), followed by 7 days at50 6 1
23、C (122 6 2F).8.2 Condition the sealant which is still in its originalcontainer, for a minimum of 5 days at 23 6 1C (73.4 6 2F)and 50 6 5 % relative humidity.8.3 Condition the polyethylene cartridge for a minimum of16 h at the same conditons as specified in 8.3.2.8.4 Place a sufficient amount of seal
24、ant into the polyethyl-ene cartridge to fill it completely with the plunger in place, andlevel with the back of the cartridge.8.5 Attach the nozzle to the cartridge; connect the air supplyand immediately extrude a small amount of material tocompletely fill the nozzle. Wipe off the end of the nozzle
25、witha paper towel.8.6 Extrude the sealant at 280 6 7 kPa (40 6 1 psi) pressureinto the preweighed container (nearest 0.1 g). Make sure all ofthe material that has exited the end of the nozzle is in thecontainer. Record the elapsed time to extrude the sealant.8.7 Weigh the container to the nearest 0.
26、1 g and subtract theinitial weight, to obtain the weight of the extruded sealant.8.8 Calculate the number of grams per second extruded.NOTE 3The cartridge filling is most easily accomplished by extrudingthe sealant into the test cartridge through the nozzle end. Avoid any airentrapment as this will
27、significantly affect the accuracy of the results.9. Report9.1 The report on the extrusion rate of sealants shall includethe following information:9.1.1 The trade name and other identification of the sealant,9.1.2 The procedure used,9.1.3 The specific gravity of the sealant,9.1.4 The temperature of t
28、he sealant, if the sealant wasmulticomponent,9.1.5 Procedure AThe number of mL (rounded to thenearest 0.1) extruded in 60 s, reported mL/min.9.1.6 Procedure BThe number of grams per second ex-truded.9.1.7 The type of nozzle used.9.1.8 Any variations, specified or otherwise, from the abovedescribed t
29、est method, including heating of sealant or varyingthe length of the curing period or temperature and humidityconditions.9.1.9 For multiple component sealants, describe the mixingsystem, the time taken to mix and the time from mix comple-tion to the start of the extrusion test.10. Precision and Bias
30、310.1 Precision:3Supporting data are available from ASTM International Headquarters. RequestRR:C24-1010 and 1016.FIG. 1 Metal Nozzle DimensionsC 1183 04 (2008)210.1.1 Round-robin testing of 5 single component sealantsby six laboratories, using aluminum nozzles, indicates theprecision between laborat
31、ories is 60 % of the test result (twostandard deviations). Precision within a laboratory is estimatedat 10 % of the test result (two standard deviations). See Table1.10.1.2 The precision of this test for multiple componentsealants is not known and is subject to time of mixing, mixingtechnique and eq
32、uipment, temperature rise caused by mixing,and elapsed time from mix completion to extrusion. See Table1.10.2 BiasThere is no statement on bias at this time.11. Keywords11.1 elastomeric sealant; extrusion rate; extrudability;freeze-thaw stability; latex sealant; sealantASTM International takes no po
33、sition respecting the validity 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 responsibi
34、lity.This standard is subject 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 A
35、STM International Headquarters. 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 addres
36、s shown below.This standard is 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), 61
37、0-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Precision SummaryExtrusion Rate of ElastomericSealantsMaterialAverageValueRepeat-abilityBetweenLabPercentWithinPercentBetweenPrecisionBetweenA 27.201 0.884 7.260 3.249 26.691 7.314B 44.589 2.036 13.802 4.566 30.953 13.951D 49.989 0.994 14.496 1.989 28.999 14.530C 73.071 2.718 21.283 3.721 29.126 21.456E 83.089 5.942 20.679 7.152 24.887 21.516One Standard Deviation 4.135 28.131C 1183 04 (2008)3
