ASTM C603-2014 Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants《弹性密封料的挤压率和使用寿命的标准试验方法》.pdf
《ASTM C603-2014 Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants《弹性密封料的挤压率和使用寿命的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM C603-2014 Standard Test Method for Extrusion Rate and Application Life of Elastomeric Sealants《弹性密封料的挤压率和使用寿命的标准试验方法》.pdf(2页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C603 14Standard Test Method forExtrusion Rate and Application Life of ElastomericSealants1This standard is issued under the fixed designation C603; 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 () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This test method covers two laboratory pro
3、cedures 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-component sealants
4、 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 ready for applica
5、tion, 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 thesafety concerns,
6、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:2C717 Terminology of Building Seals and Sealan
7、ts3. Terminology3.1 Refer to Terminology C717 for definitions of the fol-lowing terms used in this standard: standard conditions.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 un
8、der a predetermined 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 Suppl
9、y, providing 345 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. Procedure6.1 Extrusion Rate of Single-Component SealantFirstcondition the unopened
10、container for at least 16 h at standardconditions. Then place a sufficient amount of sealant into the177-mL (6-fl oz) 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)contain
11、er, measuring the time in seconds required to empty thecartridge.NOTE 2When the printed instructions of the sealant manufacturer sorecommended, heat the sealant before extruding it into the container.6.2 Extrusion Rate or Application Life or both, of MixedMulticomponent SealantFirst condition the un
12、opened con-tainers of both sealant and curing agent for at least 16 h atstandard 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 compl
13、etely with theplunger in place, fully retracted, and set the filled cartridgeaside, in a vertical position, at standard conditions, for 3 h1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral
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