1、Designation: C 1488 04Standard Practice forSimulated Aging of Cellulosic Loose-Fill Insulation1This standard is issued under the fixed designation C 1488; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript 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. Scope1.1 This practice covers a procedure to simulate the agi
3、ngprocess of cellulosic loose-fill insulation by subjecting it tocontrolled laboratory conditions of temperature and humidityso that the insulation will be further evaluated, particularly forcritical radiant flux characteristics.1.2 It is not the intent of this practice to establish agingconditions
4、that represent all possible exposures.1.3 The values stated in SI units are to be regarded as thestandard. The values in parentheses are provided for informa-tion only.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of
5、 the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal InsulationC 687 Practice for Determination of Thermal Resistance
6、ofLoose-Fill Building InsulationC 739 Specification for Cellulosic Fiber (Wood-Based)Loose-Fill Thermal InsulationC 870 Practice for Conditioning of Thermal Insulating Ma-terialsC 1485 Test Method for Critical Radiant Flux of ExposedAttic Floor Insulation Using an Electric Radiant HeatEnergy SourceE
7、 970 Test Method for Critical Radiant Flux of ExposedAttic Floor Insulation Using a Radiant Heat Energy Source2.2 Other Document:NBSIR 84-2917 Environmental Cycling of Cellulosic Ther-mal Insulation and Its Influence on Fire Performance3. Terminology3.1 DefinitionsTerminology C 168 shall be consider
8、ed asapplicable to the terms used in this practice.3.2 Definitions of Terms Specific to This Standard:3.2.1 simulated aging, ncondition resulting from expos-ing a specimen to a controlled cycle of temperature andhumidity conditions.4. Significance and Use4.1 The purpose of this practice is to simula
9、te the agingprocess of cellulosic loose-fill insulation. By identifying anychanges in flame retardant permanency due to the agingprocess, producers can design loose-fill insulation to meet orexceed material specifications throughout the product lifecycle.5. Procedure5.1 Apparatus:5.1.1 Air oven, hum
10、idity cabinet or appropriate condition-ing chamber capable of temperature and humidity conditionsallowing for successfully completing the prescribed procedureas defined in 5.2.5.1.2 Material specimens to be tested after simulated agingshall be prepared and placed in the appropriate test container in
11、accordance with the applicable material specification or Prac-tice C 687. For specimen to be tested using Test Method E 970or Test Method C 1485, prepare three specimen trays to allowfor repeat testing if necessary.5.2 ConditioningCondition the specimen in the selectedchamber under the following con
12、ditions and chronologicalsequence: 23.4 6 1.7C (75 6 3F) and 50 6 3 % RH until constant weight is achieved(constant weight is achieved when weight changes less than1%in24h) 24 h at 82.2 6 1.7C (180 6 3F) and 90 6 3 % Relative Humidity (RH) 24 h at 23.4 6 1.7C (75 6 3F) and 50 6 3%RH 24 h at 82.2 6 1
13、.7C (180 6 3F) and 90 6 3%RH 24 h at 23.4 6 1.7C (75 6 3F) and 50 6 3%RH 96 h at 60.0 6 1.7C (140 6 3F) Air Oven216 2C (69.8 6 3.6F) and 50 6 3 % RH until constant weight is achieved1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility o
14、f Subcommittee C16.31 on Chemical andPhysical Properties.Current edition approved May 1, 2004. Published June 2004. Originallyapproved in 2001. Last previous edition approved in 2001 as C 1488 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
15、 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 19428-2959, United States.6. Report6.1 Report the following information:6.1.
16、1 Conditioning treatment followed,6.1.2 Conditioned sample use; that is, tested in accordancewith Test Method E 970, Specification C 739 or Test MethodC 1485 as applicable, and6.1.3 Any visible changes in the specimen after the condi-tioning treatment, such as a separation of components or achange i
17、n color or fluffiness, particularly when changes are notuniform.7. Keywords7.1 aging; cellulosic fiber loose-fill; conditioning; humidity/temperature cycling; thermal insulationAPPENDIXES(Nonmandatory Information)X1. NBSIR 84-2917, ENVIRONMENTAL CYCLING OF CELLULOSIC THERMAL INSULATIONX1.1 NBSIR 84-
18、2917, Environmental Cycling of Cellulo-sic Thermal Insulation and Its Influence on Fire Performance,is a study conducted on climate data for eleven cities locatedthroughout the United States. Findings from this environmentalstudy were used to develop conditioning cycles for research onthe influence
19、of environment on the fire performance ofloose-fill cellulosic thermal insulation. Cellulosic thermal in-sulation was exposed to various simulated environmentalcycles and tested for changes in fire performance. Results fromthis research showed that environmental exposure could effectfire performance
20、.X2. PROCEDURE TO DETERMINE CHANGE IN WEIGHTX2.1 A change in weight due to conditioning can be usefulinformation to the user of this standard in evaluating changes,if any, in performance characteristics. A change in weight canbe calculated using the following procedure:C 5 W1 W3/ W1 W2! 3 100# (X2.1
21、)where:C = percentage change in weight after conditioning treat-ment,W1= weight of specimen and specimen holder before theconditioning treatment, grams,W2= weight of empty specimen holder/tray, grams, andW3= weight of specimen and specimen holder after theconditioning treatment, grams.ASTM Internati
22、onal takes no position 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 thei
23、r 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 for additional standardsand should b
24、e addressed to ASTM 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 Standard
25、s, 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).C1488042
