ASTM C1183 C1183M-2013 Standard Test Method for Extrusion Rate of Elastomeric Sealants《弹性体密封剂挤出速率标准试验方法》.pdf

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1、Designation: C1183 04 (Reapproved 2008)C1183/C1183M 13Standard Test Method forExtrusion Rate of Elastomeric Sealants1This standard is issued under the fixed designation C1183;C1183/C1183M; the number immediately following the designation indicatesthe year of original adoption or, in the case of revi

2、sion, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers two laboratory procedures for determining the extrusion rate of elastomeric

3、sealants for use inbuilding construction.1.2 The values statesstated in metric units either SI units or inch-pound units are to be regarded separately as the standard. Thevalues in parentheses are for information only.stated in each system may not be exact equivalents; therefore, each system shall b

4、eused independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropr

5、iate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.4 There is no known ISO equivalent to this test method.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsD1475 Test Method For Density of Liquid Coatings,

6、Inks, and Related ProductsD2452 Test Method for Extrudability of Oil- and Resin-Base Caulking Compounds3. Terminology3.1 DefinitionsSee Terminology C717 for applicable definitions of the following terms: caulking, compound, elastomeric andnonsag sealant, sealant, latex sealant.4. Significance and Us

7、e4.1 Sealants are supplied with various rheological properties ranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon opening the container. Multicomponent sealants are supplied as a basecomponent(s) and a curing agent separately packaged.After

8、mixing the two or more parts, the sealant is ready for application. Thistest method is intended to provide a means to measure the extrusion rate spanning the range of rheological properties.4.2 This test method also covers the option of measuring the freeze-thaw and heat stability of such sealants.4

9、.3 This test method provides for an option of either a metal or plastic nozzle. It is intended that the metal nozzle be used whengreater precision is required, such as in ASTM specifications. The plastic nozzle may be used for general screening of sealantproperties or for developmental purposes when

10、 a large number of test specimens are being tested.4.4 This test method measures the volume of sealant extruded in 1 min over a given period of time at a given pressure (kPaor psi).5. Apparatus5.1 High Density Polyethylene Cartridge, with plunger and cap, 177 mL (66 fluid oz)oz capacity, with the fr

11、ont end havingan inside diameter of 13.7 6 0.05 mm (0.5400.540 6 0.002 in.).in.1 This test method is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on GeneralTest Methods.Current edition approved May 1, 2008May 1, 2

12、013. Published June 2008June 2013. Originally approved in 1991. Last previous edition approved in 20042008 asC1183C1183-04(2008).-04. DOI: 10.1520/C1183-04R08.10.1520/C1183_C1183M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.o

13、rg. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM 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

14、 may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult 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 H

15、arbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.2 Nozzle.5.2.1 Metal Nozzle, threaded to fit threaded end of polyethylene cartridge with the dimensions given in Fig. 1.5.2.2 Polyethylene Cartridge Nozzle, 64 mm (22 12 in.)in. in length with 3mm (18 in.)in. orifice5.3 Air

16、Supply, to provide 280 6 7 kPa (4040 6 1 psi)psi pressure with appropriate fittings and air lines to attach to an airpowered gun for convenience of use.5.4 Caulking Gun, 177 mL (66 fluid oz)oz capacity, air powered.5.5 Freezer, capable of maintaining 17 6 1C (00 6 2F).2F.5.6 Circulating Air Oven, ca

17、pable of maintaining 50 6 1C (122122 6 2F).2F.5.7 Time Device, a clock or stop-watch graduated in seconds.5.8 Small Container, can, cup, and so forth, as receiver for extruded sealant.5.9 Balance, accurate to 60.1 g (0.035 oz).0.035 oz.5.10 Pycnometer, or suitable apparatus to obtain a specific grav

18、ity.5.11 Thermometer.5.12 Spatula.6. Test Conditions6.1 Unless otherwise specified by those authorizing the tests, standard conditions as defined by Terminology C717 shall be used.7. Procedure A7.1 Condition the unopened container of sealant for at least 16 h at standard conditions.7.2 Determine the

19、 specific gravity of the sealant as described in Test Methods D2452 or D1475, or use another scientificallycorrect technique. For multiple component systems, mix 100 g sealant (4 oz)4 oz with the proper amount of curing agent.NOTE 1Curing times and conditions for multicomponent mixed compounds may v

20、ary. Therefore, the length of time between mixing the componentsand testing the extrusion rate may vary. Record the time from mix completion to the start of the extrusion test.7.3 For multiple component sealants, mix 400 g (14.1 oz)14.1 oz sealant with the proper amount of curing agent. Follow themi

21、xing directions as recommended by the manufacturer.7.4 Place a sufficient amount of sealant into the polyethylene cartridge to fill it completely with the plunger in place, and levelwith the back of the cartridge.NOTE 2The cartridge filling is most easily accomplished by extruding the sealant into t

22、he 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 supply and immediately extrude a small amount of material to completelyfill the nozzle. Wipe off the end of the nozz

23、le with a paper towel.7.6 Extrude the sealant at 28067 kPa (404061 psi)psi pressure into the preweighed container (nearest 0.1 g) for 60 s. Makesure all of the material that has exited the end of the nozzle is in the container.7.7 Weigh the container to the nearest 0.1 g and subtract the initial wei

24、ght, to obtain the weight of the extruded sealant. Convertthe weight of the sealant to volume of sealant by dividing the weight by the specific gravity. If all the material is extruded in lessthan 60 s, note the length of time required and calculate the volume of sealant that would have been extrude

25、d in 60 s as follows:FIG. 1 Metal Nozzle DimensionsC1183/C1183M 132Number of gramsNumber of seconds360 seconds1minute3 1specific 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 (00 6

26、2F)2F and 8 h at 23 6 1C (73.473.4 6 2F),2F, followed by 7 days at 50 6 1C (122122 6 2F).2F.8.2 Condition the sealant which is still in its original container, for a minimum of 5 days at 23 6 1C (73.4 6 2F) and 50 65 % relative humidity.standard conditions.8.3 Condition the polyethylene cartridge fo

27、r a minimum of 16 h at the same conditonsconditions as specified in 8.28.3.28.4 Place a sufficient amount of sealant into the polyethylene cartridge to fill it completely with the plunger in place, and levelwith the back of the cartridge.8.5 Attach the nozzle to the cartridge; connect the air supply

28、 and immediately extrude a small amount of material to completelyfill the nozzle. Wipe off the end of the nozzle with a paper towel.8.6 Extrude the sealant at 280 6 7 kPa (4040 6 1 psi)psi pressure into the preweighed container (nearest 0.1 g). Make sureall of the material that has exited the end of

29、 the nozzle is in the container. Record the elapsed time to extrude the sealant.8.7 Weigh the container to the nearest 0.1 g and subtract the initial 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

30、accomplished by extruding the sealant into the test cartridge through the nozzle end. Avoid any airentrapment as this will significantly affect the accuracy of the results.9. Report9.1 The report on the extrusion rate of sealants shall include the following information:9.1.1 The trade name and other

31、 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 the sealant, if the sealant was multicomponent,9.1.5 Procedure AThe number of mL (rounded to the nearest 0.1) extruded in 60 s, reported mL/min.9.1.6 Procedure BThe number of gr

32、ams per second extruded.9.1.7 The type of nozzle used.9.1.8 Any variations, specified or otherwise, from the above described test method, including heating of sealant or varying thelength of the curing period or temperature and humidity conditions.9.1.9 For multiple component sealants, describe the

33、mixing system, the time taken to mix and the time from mix completionto the start of the extrusion test.10. Precision and Bias310.1 Precision:10.1.1 Round-robin testing of 5 single component sealants by six laboratories, using aluminum nozzles, indicates the precisionbetween laboratories is 60 % of

34、the test result (two standard deviations). Precision within a laboratory is estimated at 10 % of thetest result (two standard deviations). See Table 1.10.1.2 The precision of this test for multiple component sealants is not known and is subject to time of mixing, mixing techniqueand equipment, tempe

35、rature rise caused by mixing, and elapsed time from mix completion to extrusion. See Table 1.3 Supporting data are available from ASTM International Headquarters. Request RR:C24-1010 and 1016.TABLE 1 Precision SummaryExtrusion Rate of ElastomericSealantsMaterial AverageValue Repeat-ability BetweenLa

36、b PercentWithin PercentBetween PrecisionBetweenA 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 28.131C1183/C1183M 13

37、310.2 BiasThere is no statement on bias at this time.11. Keywords11.1 elastomeric sealant; extrusion rate ; rate; extrudability; freeze-thaw stability; latex sealant; sealantASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mention

38、edin 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 responsible technical committee and

39、 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 consideration at a meeting of

40、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 Barr Harbor Drive, PO Box C

41、700, 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), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C1183/C1183M 134