1、Designation: D 3815/D 3815M 05Standard Practice forAccelerated Weathering of Pressure-Sensitive Tapes byOpen-Flame Carbon-Arc Exposure Apparatus1This standard is issued under the fixed designation D 3815/D 3815M; the number immediately following the designation indicates theyear of original adoption
2、 or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) 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. Sco
3、pe1.1 This practice describes one environment for the expo-sure of pressure-sensitive tapes to a laboratory acceleratedweathering environment.1.2 This practice describes sample preparation and thelaboratory-accelerated weathering environment to which itshall be exposed. It does not specify the lengt
4、h of time of theexposure nor what tests shall be performed on the materialfollowing the exposure.NOTE 1Practice D 6551 describes xenon-arc exposures of tapes.1.3 The values stated in either SI or inch-pound units are tobe regarded separately as standard. The values stated in eachsystem may not be ex
5、act equivalents; therefore, each systemmust be used independently without combining values in anyway.1.4 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 establish appro-priate safety and hea
6、lth practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 666 Specification for Annealed or Cold-Worked Austen-itic Stainless Steel Sheet, Strip, Plate, and Flat BarD 3330/D 3330M Test Method for Peel Adhesion ofPressure-Sensit
7、ive TapeD 3715/D 3715M Practice for Quality Assurance ofPressure-Sensitive TapesD 6551 Practice for Accelerated Weathering of Pressure-Sensitive Tapes by Xenon-Arc Exposure ApparatusG 147 Practice for Conditioning and Handling NonmetallicMaterials for Natural and Artificial Weathering TestsG 151 Pra
8、ctice for Exposing Nonmetallic Materials in Ac-celerated Test Devices that Use Laboratory Light SourcesG 152 Practice for Operating Open Flame Carbon-ArcLight Apparatus for Exposure of Nonmetallic Materials3. Summary of Practice3.1 The pressure-sensitive tape is exposed in accordancewith the conditi
9、ons provided by Practices G 151 and G 152.Exposure time is determined by applicable material specifica-tion or by mutual agreement by all interested parties.4. Significance and Use4.1 This practice does not necessarily provide direct simu-lation of natural weathering exposure.4.2 Results from use of
10、 this practice shall not be representedas being equivalent to those of any natural weathering test untila satisfactory degree of correlation has been established for thematerial in question.4.3 Variations in results are possible when the operatingconditions vary within the accepted limits for the in
11、strumentspecified in Practices G 151 and G 152.5. Apparatus5.1 Exposure Apparatus, conforming to the requirementsdefined in Practices G 151 and G 152 for exposure using theopen-flame carbon arc with daylight filters.5.2 Panels, for holding or supporting the specimens ap-proximately 75 by 225 mm 3 by
12、 9 in. and rigid enough toresist deforming during use.5.2.1 The material shall be Type 302 or 304 stainless steel inaccordance with Specification A 666 having a bright annealedfinish. The surface roughness height shall be 50 6 5 mm 2.06 0.1 -in. arithmetical average deviation from the mean line.5.2.
13、2 Other dimensions or materials and finishes are accept-able when defined by the subsequent test standard or commod-ity specification.5.2.3 A panel or frame of the dimensions required by theexposure apparatus may be used to support the specimen panelwhen it is more convenient to do so, as long as th
14、e light andwater paths are not interrupted or shortened by doing so.1This practice is under the jurisdiction of ASTM Committee D10 on Packagingand is the direct responsibility of Subcommittee D10.14 on Tape and Labels.Current edition approved Dec. 1, 2005. Published December 2005. Originallyapproved
15、 in 1979. Last previous edition approved in 1999 as D 3815/D 3815M 99.2For referenced 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
16、 website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.3 Rubber-Covered Roller, at least as wide as the specimenwith any diameter and rubber hardness.6. Sampling6.1 Sampling shall be in accordance with the requirementsof the appl
17、icable material or commodity specification.6.2 Lacking the previously mentioned specification, sam-pling shall be in accordance with the physical property methodapplicable to the testing to follow the exposure.6.3 When no other sampling requirement is applicable,sampling shall be in accordance with
18、Practice D 3715/D 3715M.7. Test Specimens7.1 Unless otherwise specified, prepare and expose at leastthree replicate specimens of each tape to be tested. The testspecimen dimensions shall be in accordance with the standardto be used subsequent to this exposure or the commodityspecification.7.2 Unwind
19、 and discard at least three, but no more than six,outer wraps of tape from the sample roll before takingspecimens for testing.7.3 Remove specimens from a freely rotating roll at the rateof 500 to 750 mm 20 to 30 in./s. Where width or other factorscausing a high adherence to backing make it impossibl
20、e toremove the specimen at the prescribed rate, remove it at a rateas close to 500 mm 20 in./s as possible.7.4 Follow the procedures described in Practice G 147 foridentification, conditioning, and handling of test specimensprior to, during, and after exposure.8. Procedure8.1 Apply the specimen as d
21、irected by the standard to beused subsequent to this exposure. If none, apply the specimen,centered lengthwise, to the panel using the rubber-coveredroller (5.3), holding the specimen so that the roller causes thefirst contact of specimen with the panel.8.1.1 When a test, such as in Test Method D 33
22、30/D 3330M, is to follow this exposure, it is customary to applythe tape to the prescribed panel in accordance with TestMethod D 3330/D 3330M preparatory to the exposure and peelit without reapplication following the exposure.8.1.2 It is usually assumed that it is the backside of thepressure-sensiti
23、ve tape that is to receive the energy. Anydeviation from this would be expressed by the commodityspecification.8.2 Expose specimens in the open-flame carbon arc appa-ratus in accordance with Practice G 151 and Cycle 1 ofPractice G 152 using continuous light and a test cycle consist-ing of 102 min li
24、ght only followed by 18 min of light withwater sprayed on the front surface of the specimens. Theuninsulated black panel temperature is controlled at equilib-rium at 63C at the control point. The maximum operationalfluctuation allowed is 63C. The chamber air temperatureshall be controlled at 44C at
25、the control point with a maximumoperational fluctuation of 62C. Apparatus equipped withmeans of humidification shall be operated with the humidifierturned off. The total time of exposure shall be as specified inthe material specification.8.3 Expose the specimens according to Cycle 1 of PracticeG 152
26、. Apparatus equipped with means of humidification shallbe operated with the humidifier turned off. The total time ofexposure shall be as specified in the material specification.8.4 Follow the instructions of the commodity specificationrelative to observations, physical tests, or both to be performed
27、on the specimens following the exposure. Determine theaverage of the result for physical property tests performed onthe specimens.9. Report9.1 In reporting data, including observations, obtained byany examination following this exposure, make reference tothis practice by designation. Provide the fol
28、lowing informa-tion:9.1.1 Any deviation from this practice and any items refer-enced in the Report section of Practices G 151 and G 152, and9.1.2 The information required by the subsequent standard.10. Keywords10.1 accelerated weathering; open-flame carbon-arc expo-sure apparatus; pressure-sensitive
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30、ent 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 revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or
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32、own 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,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).D 3815/D 3815M 053
