ASTM C739-2008 Standard Specification for Cellulosic Fiber Loose-Fill Thermal Insulation《纤维素纤维(木基)的疏松填充绝热材料标准规范》.pdf

1、Designation: C 739 08Standard Specification forCellulosic Fiber Loose-Fill Thermal Insulation1This standard is issued under the fixed designation C 739; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n

2、umber 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 Department of Defense.1. Scope1.1 This specification covers the composition and physicalr

3、equirements of chemically treated, recycled cellulosic fiberloose-fill type thermal insulation for use in attics or enclosedspaces in housing, and other framed buildings within theambient temperature range from 45 to 90C by pneumatic orpouring application. While products that comply with thisspecifi

4、cation are used in various constructions, they are adapt-able primarily, but not exclusively, to wood joist, rafters, andstud construction.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to

5、 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 health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 152/B 1

6、52M Specification for Copper Sheet, Strip, Plate,and Rolled BarC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC 518 Test Method for Steady-State Thermal Transmiss

7、ionProperties by Means of the Heat Flow Meter ApparatusC 687 Practice for Determination of Thermal Resistance ofLoose-Fill Building InsulationC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 1114 Test Method for Steady-State Thermal TransmissionProperties

8、 by Means of the Thin-Heater ApparatusC 1338 Test Method for Determining Fungi Resistance ofInsulation Materials and FacingsC 1363 Test Method for Thermal Performance of BuildingMaterials and Envelope Assemblies by Means of a HotBox ApparatusC 1374 Test Method for Determination of Installed Thick-ne

9、ss of Pneumatically Applied Loose-Fill Building Insula-tionC 1485 Test Method for Critical Radiant Flux of ExposedAttic Floor Insulation Using an Electric Radiant HeatEnergy SourceE 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE 970 Test Method for C

10、ritical Radiant Flux of ExposedAttic Floor Insulation Using a Radiant Heat Energy Source3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology C 168.3.2 Definitions of Terms Specific to This Standard:3.2.1 attican enclosed space between the roof and ceilin

11、gof the occupied part of a building.3.2.2 critical radiant fluxthe level of incident radiant heatenergy on the attic floor insulation system at the most distantflame-out point (W/cm2).4. Materials and Manufacture4.1 The basic material shall be recycled cellulosic fibermade from selected paper, paper

12、board stock, or ground woodstock, excluding contaminated materials, which may reason-ably be expected to be retained in the finished product. Suitablechemicals are introduced to provide properties such as flameresistance, processing, and handling characteristics.4.2 The basic material may be process

13、ed into a formsuitable for installation by pneumatic or pouring methods.5. Physical and Chemical Properties5.1 Design DensityThe design density shall be deter-mined in accordance with Section 8. Report all units in kg/m3.1This specification is under the jurisdiction of ASTM Committee C16 onThermal I

14、nsulation and is the direct responsibility of Subcommittee C16.23 onBlanket and Loose Fill Insulation.Current edition approved Aug. 15, 2008. Published November 2008. Originallyapproved 1973. Last previous edition approved 2005 C 739 05b1.2For referenced ASTM standards, visit the ASTM website, www.a

15、stm.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 Conshohocken, PA 19428-2959, United States.5.1.1 D

16、esign density is not a basis for acceptance orrejection.5.2 CorrosivenessThe loose-fill insulation material shallbe tested for corrosiveness as specified in Section 9. Thecomposition of the insulation material shall be such that aftertesting, no perforation of the 3-mil (76-m) metal specimensshall b

17、e evident when the specimens are observed over a 40-Wappliance light bulb. Notches extending into the coupon 3 mmor less from any edge shall be ignored.5.3 Critical Radiant FluxWhen tested in accordance withSection 10, the critical radiant flux shall be equal to greaterthan 0.12 W/cm2. All values sh

18、all be reported to twosignificant digits.5.4 Fungi ResistanceThe loose-fill insulation materialshall be tested and shall pass fungi resistance as specified inSection 11. If the growth on two or more of the replicate testitems is greater than that on the comparative item, the test itemshall be consid

19、ered to fail.NOTE 1If the manufacturing claims the insulation kills or controlsinsects or rodents, or both, the product must be registered as a pesticideunder the Federal Insecticide, Fungicide and Rodentic Act, as amended,and must also be registered in accordance with state pesticide statutes.5.5 M

20、oisture Vapor SorptionMoisture gain in the insula-tion shall be no more than 15 % by weight when tested inaccordance with Section 12.5.6 Odor EmissionAny sample producing a detectableodor that is classified as objectionable and strong or very strongby more than two panel members shall be considered

21、to havefailed the test when tested in accordance with Section 13.5.7 Smoldering CombustionWhen tested in accordancewith the smoldering combustion test method in Section 14, theinsulation shall show no evidence of flaming and a weight lossno greater than 15 %.5.8 Thermal ResistanceThe standard therma

22、l resistancevalues normally recommended for open application are: 2.3,3.4., 3.9, 5.3, 6.7, and 8.6 and are expressed in Km2/W . Thethermal resistance R for the average of any (four) randomlyselected specimens shall not be more than 5 % below the listedR value when tested in accordance with Section 1

23、5. R valuesother than those listed shall be as agreed upon between thesupplier and the purchaser.6. Workmanship, Finish, and Appearance6.1 The product shall be free of extraneous foreign materialssuch as metals and glass that will adversely affect the perfor-mance in service.TEST METHODS7. Summary7.

24、1 The following tests shall be conducted on loose-fillcellulosic insulation at the measured design density: moisturevapor sorption, smoldering combustion, and thermal resis-tance.NOTE 2The importance of an insulations product to maintain its fireretardant characteristics is recognized. A task group

25、in ASTM C16.31 iscurrently studying methods to ascertain if there is a long-term deteriora-tion of fire performance characteristics of cellulose insulation. Should theneed for a permanency test be determined by this task group and a testmethod be developed and finalized, it will become a part of thi

26、sspecification.8. Design Density8.1 ScopeThis test method provides a basis for calculat-ing the product coverage values and for conducting physicalproperty tests requiring the use of design density for samplepreparation.8.2 Significance and UseThe design density is the ap-proximate density expected

27、after long-term attic application.8.3 Apparatus and Materials:8.3.1 Insulation Specimen ContainerA beaker having aflat bottom and an inside diameter of 15.06 1 cm, straightsides. The height of the beaker shall be such that the distancebetween the bottom of the cyclone and the top edge of thebeaker i

28、s 8.50 6 1.0 cm.8.3.2 Flat Rigid Disk, having a total weight of 75 6 5 g andof a suitable diameter to fit loosely into the specimen container.Weight may be added to the center of the disk to bring the totalweight to the required 75 6 5g.8.3.3 Balance, having a 2-kg capacity accurate to6 0.2g.8.3.4 B

29、lower Apparatus, having two blower units (supplyand overflow) meeting the following specifications:8.3.4.1 Each blower apparatus shall be capable of blowingan average of 272.2 kg of insulation per hour.8.3.4.2 Each blower apparatus shall have a nominal air flowvelocity of 0.38 m/s .8.3.4.3 Each blow

30、er apparatus shall have a nominal motorspeed of 16 450 r/min at 115 V (a-c).8.3.5 Shaker Unit, having a capability of shaking 4.5 kg ofweight with a vertical motion of 0.5 g rms acceleration at anapproximate frequency of 9 Hz and displacement of approxi-mately 1.176 0.08 cm .8.3.6 Fill Chamber, havi

31、ng inside dimensions of 45.7 cmhigh by 38.1 cm wide by 38.1 cm deep, with covered openingsthat will allow a radiant panel tray to be slid through thechamber (see Fig. 1).8.3.7 Cyclone ReceiverSee Fig. 2.8.3.8 HoseVarious lengths of nominal 5.08-cm diameterhose (see Fig. 1):8.3.8.1 Supply Source Hose

32、, 274.3 6 5.1 cm.8.3.8.2 Cyclone Receiver Hose, 182.9 6 5.1 cm.8.3.8.3 Fill Chamber Exit Hose, 91.4 6 5.1 cm.8.3.8.4 Overflow Exhaust Hose, length as needed.8.3.9 Blower Controls, having capability of operating thetwo blowers at 40 V rms and 12 A.8.3.10 Insulation Holding Container, capable of holdi

33、ngfour times the amount of insulation required to fill thespecimen container.8.3.11 Garden Rake, with steel teeth.8.4 Conditioning:8.4.1 Condition specimens to equilibrium at 21 6 2.0C and50 6 5 % relative humidity in an open top mesh bottomcontainer not exceeding 10.16 cm in depth and position in s

34、ucha way to allow free movement of air on exposed sides. Achange in net weight of the specimen that is less than 1 % intwo consecutive weighings with 24 h between each weighingconstitutes equilibrium.C7390828.4.2 If ambient laboratory conditions are different from theconditioning requirements specif

35、ied in 8.4.1, begin testing thespecimen for design density within 10 min after it has beenremoved from the conditioned area.8.5 Procedure for Pneumatic Applications:8.5.1 Conduct the test in an area conditioned in accordancewith 8.4.1.8.5.2 Blow the material through a commercial blower using30.48 m

36、of 5.08 cm hose into a sample receiver while holdingthe hose horizontally at a height of four feet.8.5.3 Set up the apparatus as shown in Fig. 1. Connect oneend of the supply source hose to the intake of the supplyblower. Use the other end of the supply source hose to pick upinsulation from the hold

37、ing container. Connect one end of thecyclone receiver hose to the outlet of the supply blower and theother end to the fill chamber. Place the fill chamber on a flatand level surface. Connect one end of the variable lengthoverflow exhaust hose to the outlet of the overflow blower.Conveniently place t

38、he other end to reduce insulation dust inthe test area.8.5.4 Weigh the empty insulation specimen container andrecord its weight.8.5.5 Place the empty insulation specimen container in thefill chamber, centered under the cyclone receiver, and close thefront cover.8.5.6 Adjust the blower control(s) so

39、that the supply andoverflow blowers will operate at a no-load voltage of 40 V rms.8.5.7 Simultaneously turn on the blowers and proceed to fillthe insulation specimen container by picking up material fromthe holding container using the supply source hose.8.5.8 The container may fill unevenly, that is

40、, a void maytend to form off center in the container. If this occurs, stop theblowing process and rotate the container. If, for any reason, thefilling process is interrupted for more than 1 min or for morethan the time allowed to rotate the container once, begin theprocess again.8.5.9 Gently remove

41、the excess material using a straightedge to leave a uniform surface on the insulation flush with thetop of the container.8.5.10 Weigh the filled and leveled container and record theweight. Take care not to bump or jar the container so not tointroduce any extraneous settling of the insulation.FIG. 1

42、Partial Insulation Preparation ApparatusFIG. 2 Cyclone Receiver WeldmentC7390838.5.11 Cover the container to prevent spilling and secure thecontainer to the shaker. Operate the shaker for a period of 5min 6 15 s.8.5.12 Remove the container from the shaker and uncover,taking care not to bump or jar i

43、t. Lower the disk very slowlyinto the container until it starts to contact the insulation.At thispoint, release the disk and allow it to settle onto the insulationunder its own weight.8.5.13 Measure the volume of the space occupied by theinsulation using the bottom edge of the disk as the upper datu

44、mpoint. If the disk is not level, measure the high and low pointsof the bottom of the disk and average the readings and use thisas the height measurement in calculating the volume (Vs).Calculate the design density using the insulation volume andinsulation mass (W).8.5.14 Repeat 8.5.1-8.5.13 using an

45、other specimen of theinsulation until four densities are obtained for a given material.Then average these figures to determine the design density.8.6 Procedure for Pouring Applications:8.6.1 Pour loose-fill insulation into a simulated attic spaceuntil full. The attic space shall be formed by two nom

46、inal 2 by6 by 8-ft long joists placed 40.6 cm on center with 1.27-cmplywood nailed to the ends and bottom. Fluff the material witha garden rake, applying a series of small amplitude strokeswhile moving the rake slowly along the joist. Repeat thefluffing process six times.8.6.2 Weigh the empty insula

47、tion specimen container andrecord its mass.8.6.3 Using a shovel, remove the insulation from the simu-lated attic space and place it into the specimen container untilthe container just begins to overflow.8.6.4 Follow the procedure specified in 8.5.9-8.5.13.8.6.5 Repeat 8.6.2-8.6.4 using another speci

48、men of theinsulation until four densities are obtained for a given material.Then average these values to determine the design density.8.7 Procedure for Pouring and Pneumatic ApplicationsIfthe insulation is intended for both pouring and pneumaticapplications, or if it is uncertain whether the insulat

49、ion will bepoured or installed pneumatically, test the insulation for designdensity in accordance with 8.4, 8.5, and 8.6 for each of theapplications.8.8 CalculationsCalculate the design density, in kg/m3,of each specimen using Eq 1:Design density 5 W/Vs(1)where:W = combined mass of the container and insulation minusthe mass of the container, g, andVs= volume of insulation in container after shaking, L.8.9 Precision and Bias8.9.1 Precision3The precision of this test method wasdetermined from a report published in the Federal Register,March 8, 1979. Seven