ASTM C1423-1998(2003) Standard Guide for Selecting Jacketing Materials for Thermal Insulation《隔热用封装材料选择的标准指南》.pdf

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1、Designation: C 1423 98 (Reapproved 2003)Standard Guide forSelecting Jacketing Materials for Thermal Insulation1This standard is issued under the fixed designation C 1423; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of

2、last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide covers criteria for selecting thermal insula-tion jacketing materials and is not intended for use as aperf

3、ormance or product specification.1.2 This guide applies to jacketing materials applied overthermal insulation for piping, ducts, and equipment.1.3 This guide includes jacketing materials used over ther-mal insulation whether the insulation is in the form of pipe,board, or blanket, or field applied m

4、aterials that are self-supporting, including insulating cements.1.4 This guide does not include covers or other retainingwalls that contain loose fill, other nonsupporting insulationmaterials, or conduits or containers for buried insulationsystems.1.5 This guide does not include mastics and coatings

5、 andtheir reinforcements.1.6 The values stated in inch-pound units are to be regardedas the standard. The SI values given in parentheses areprovided for information only.1.7 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility

6、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:A 240/A 240M Specification for Chromium andChromium-Nickel Stainless Steel Plate, Sheet, and Stripfor P

7、ressure Vessels and for General Applications2A 366/A 366M Specification for Steel, Sheet, Carbon,Cold-Rolled, Commercial Quality3B 209 Specification for Aluminum and Aluminum-AlloySheet and Plate4C 168 Terminology Relating to Thermal Insulation5C 488 Test Method for Conducting Exterior Exposure Test

8、sof Finishes for Thermal Insulation5C 835 Test Method for Total Hemispherical Emittance ofSurfaces up to 1400C5C 921 Specification for Jackets for Thermal Insulation5C 1057 Practice for Determination of Skin Contact Tem-perature from Heated Surfaces Using a MathematicalModel and Thermethesiometer5C

9、1136 Specification for Flexible, Low Permeance VaporRetarders for Thermal Insulation5C 1258 Test Method for Elevated Temperature and Humid-ity Resistance of Vapor Retarders for Insulation5C 1263 Test Method for Thermal Integrity of Flexible WaterVapor Retarders5C 1338 Test Method for Determining Fun

10、gi Resistance ofInsulation Materials and Facings5D 828 Test Methods for Tensile Properties of Paper andPaperboard Using Constant-Rate-of-Elongation Appara-tus6D 882 Test Method for Tensile Properties of Thin PlasticSheeting7D 1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic S

11、heeting or Film at ElevatedTemperature7E 84 Test Method for Surface Burning Characteristics ofBuilding Materials8E 96 Test Methods for Water Vapor Transmission of Mate-rials5E 119 Method for Fire Tests of Building Construction andMaterials8E 596 Method for Laboratory Measurement of Noise Re-duction

12、of Sound-Isolating Enclosures5F 1249 Test Method for Water Vapor Transmission Ratethrough Plastic Film and Sheeting Using a ModulatedInfrared Sensor62.2 TAPPI Standards:9T461 Flame Resistance of Treated Paper and PaperboardT803 Puncture Test of Containerboard1This guide is under the jurisdiction of

13、ASTM Committee C16 on ThermalInsulation and is direct responsibility of Subcommittee C16.40 on InsulationSystems.Current edition approved April 10, 2003. Published August 2003. Originallyapproved in 1998. Last previous edition approved in 1998 as C 1423 98.2Annual Book of ASTM Standards, Vol 01.03.3

14、Discontinued. Replaced by A 1008/A 1008M. See 1999 Annual Book of ASTMStandards, Vol 01.03.4Annual Book of ASTM Standards, Vol 02.02.5Annual Book of ASTM Standards, Vol 04.06.6Annual Book of ASTM Standards, Vol 15.09.7Annual Book of ASTM Standards, Vol 08.01.8Annual Book of ASTM Standards, Vol 04.07

15、.9TAPPI, 15 Technology Parkway South, Norcross, GA 30092.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 DefinitionsTerminology C 168 apply to the termsused in this practice. The following terms are also used in thi

16、sstandard.3.1.1 abuse resistanceability of a material to be exposedfor prolonged periods of time to normal physical abuse withoutsignificant deformation or punctures.3.1.2 ambient temperaturethe dry bulb temperature ofsurrounding air when shielded from any sources of incidentradiation.3.1.3 cleanabi

17、lityability of a material to be washed orotherwise cleaned to maintain its appearance.3.1.4 corrosion resistanceability of a material to be ex-posed for prolonged periods of time to a corrosive environmentwithout significant onset of corrosion and the consequentialloss of mechanical properties.3.1.5

18、 fire resistanceability of a material to be exposed fora defined period of time to a fire with only limited andmeasurable loss of mechanical properties.3.1.6 fungal growth resistanceability of a material to beexposed continuously to damp conditions without the growthof mildew or mold.3.1.7 temperatu

19、re resistanceability of a material to per-form its intended function after being subjected to high and lowtemperatures which the material might be expected to encoun-ter during normal use.3.1.8 weather resistanceability of a material to be ex-posed for prolonged periods of time to the outdoors witho

20、utsignificant loss of mechanical properties.4. Significance and Use4.1 This standard is intended to be used by engineers anddesigners as a guide to assist them in selecting appropriatethermal insulation jacketing materials. As a guide, it can beused to identify performance characteristics that might

21、 benecessary for a particular insulation jacketing system. Thisguide is not a specification and therefore should not be used assuch. It might, however, be useful in writing a specification.Specification C 921 can also be used to determine properties ofjacketing materials for thermal insulation.5. Ma

22、terials and Manufacture5.1 Jacketing materials may be composed of a single mate-rial or a lamination of several components. The material maybe in the form of rolls or sheets or preformed to fit the surfaceto which they are to be applied. The materials may be appliedin the field or may be a factory-a

23、pplied composite with theinsulation.5.2 Metallic:5.2.1 Metallic jacketing materials are those whose primarymaterial (usually the component of greatest thickness) is metal,such as, aluminum, steel, and stainless steel. The metal may besmooth, corrugated, or embossed. The dimensions of corruga-tions (

24、pitch and depth) may be specified by the purchaser forinterchangeability, constant rigidity, and control of sizes. Theinner surface of metallic jacketing materials may be coated orcovered with a moisture resistant film to retard possiblegalvanic and/or chemical corrosion of the jacketing.5.2.1.1 Alu

25、minum jacketing materials can be manufacturedfrom Specification B 209, Type 3003, 3004, 3105, 5005, 5010,5020, or 1100 aluminum, temper ranges from H14 (half hard)through H19 (full hard). Where ambient conditions are severe,the outer surface of the aluminum may be coated whenspecified. Thicknesses g

26、enerally available are from 0.006 to0.040 in. (0.15 to 1.02 mm).5.2.1.2 Steel jacketing materials can be manufactured fromSpecification A 366/A 366M, Type 1010, 1015, or 1020 steel.The outer surface is typically protected by aluminizing, galva-nizing, or coating with plastic film or enamel to retard

27、 exteriorcorrosion, or a combination thereof. Metal thicknesses gener-ally available are from 0.010 to 0.019 in. (0.25 to 0.46 mm).5.2.1.3 Stainless steel jacketing materials can be manufac-tured from Specification A 240/A 240M, Type 301, 302, 303,304, or 316 stainless steel, hardness B85 (soft anne

28、aled).Thicknesses generally available are from 0.010 to 0.019 in.(0.25 to 0.46 mm).5.3 Nonmetallic and Laminated Jacketing:5.3.1 Laminated jacketing materials are typically manufac-tured from combinations of plastic films, plastic composites,metallic foils, reinforcing fabrics, papers, or felts sele

29、cted toobtain the required performance characteristics. For flexiblelow permeance vapor retarders, see Specification C 1136.5.3.2 Textile or cloth jacketing materials are woven orknitted of textile yarns. Commonly available forms are 4, 6, or8 oz/yd2(0.14, 0.20, or 0.27 kg/m2) cotton canvas, various

30、weaves of glass fiber yarns, presized glass cloth, knit, or wovenplastic fibers.5.3.3 Plastic jacketing materials are manufactured in vari-ous forms and types. Thicknesses generally available are from0.003 to 0.035 in. (0.08 to 0.89 mm). Various materials can beused such as poly-vital chloride (PVC)

31、, CPVS, fiberglassreinforced plastic (FRP), and others.5.3.4 Saturated felt or cloth jacketing materials are manu-factured from various base felts or cloths that have beenimpregnated with bitumen or resinous materials. Examples:Glass fiber, polyester fiber, polyolefin fiber. This definitiondoes not

32、include tar paper, asphalt paper, or other paperboardmaterials or other products, such as rag felt, that are made outof waste and they do not represent a continuous and resistantbase for a jacketing.6. Physical and Chemical Performance Considerations6.1 This section includes a number of performance

33、issuesthat should be considered when using this guide to select ajacketing material for thermal insulation. Some may not beapplicable to the particular application. However, to be certainnone are overlooked, the user should consider all materialsinitially and then eliminate those that are not applic

34、able.6.2 Abuse ResistanceConsideration should be given to theability of a jacketing material to withstand a variety of physicalconditions in excess of required functional design criteria.Prior to selection, consideration should be given to the ex-pected intensity and types of abuse as well as the le

35、ngth of timethe jacketing material is expected to withstand a given level ofabuse.6.2.1 Abuse May Include the Following Factors:C 1423 98 (2003)26.2.1.1 Foot traffcWill people or equipment be applyingloads directly on the jacketing material such as when piping isused like a ladder?6.2.1.2 Impact Res

36、istanceIs the jacketing material locatedwhere there is a probability of it being routinely struck byfalling tools or other objects or being hit by traffic moving by?6.2.1.3 System MaintenanceDoes the system that thejacketing material is on require maintenance at regular inter-vals that would require

37、 the removal and reinstallation of thejacketing material?6.2.1.4 Puncture ResistanceIs the jacketing material eas-ily punctured? See 9.1.2.6.3 Weather ResistanceConsideration should be given tothe ability of a jacketing system to be exposed outdoorswithout a significant loss of properties. Factors t

38、o consider inselection of the jacketing materials, that comprise the jacketingsystem, are the following.6.3.1 Possible effects of precipitation, including rain, snow,sleet, hail, frost, and dew as appropriate for the use area.6.3.2 Possible effect of ultra violet radiation from sunlight.6.3.3 Maximu

39、m wind velocity.6.3.4 Possibility of abrasion caused by blowing sand or salt.6.3.5 Possible effect of high humidity or fog.6.4 Water Vapor Transmission (Vapor RetardingCapability)Consideration should be given to the ability of ajacketing material to inhibit transport of water vapor through it.Some f

40、actors to consider are the following.6.4.1 Water vapor tends to travel from areas of high vaporpressure to areas of low vapor pressure. See 9.1.1.6.4.2 Water in insulation tends to reduce its efficiency.Therefore, if the system constantly runs above ambient it maybe appropriate that the jacketing ma

41、terial or system will allowwater vapor transmission. If the system constantly runs belowambient then the jacketing material and system should retardthe ingress of water vapor.6.4.3 If a jacketing system is being used as a water vaportransmission retarder, particular care must be paid to thejacketing

42、 materials system of attachment so that any screwholes or other penetrations are vapor sealed. Vapor sealing ofjacketing and butt joints must be thorough. In general, anypenetrations or areas of discontinuity of the jacketing materialmust be vapor sealed to retard intrusion of ambient moisturevapor.

43、6.5 External Corrosion ResistanceConsideration shouldbe given to whether corrosive chemicals might be presentaround the insulation jacketing system. Many types of corro-sive atmospheres or corrosive chemical spills can corrodecertain jacketing materials compromising insulation systemperformance.6.6

44、Internal Corrosion ResistanceThere are several typesof internal corrosion. One is an electrical reaction that resultsfrom electrolysis between the metallic surface to be insulatedand the inner metallic surface of the jacketing. The second is achemical reaction between two dissimilar metals. With the

45、insulation otherwise in direct contact with the jacketing and thepresence of internal moisture in the insulation, considerationshould be given to provide a suitable protective barrier on thejackets interior surface to retard such corrosion. A third is achemical reaction, that takes place in the pres

46、ence of water thathas condensed from moisture in the air, between a metal jacketand chemicals leached out of the insulation. See 9.1.14.6.7 Fungal ResistanceConsideration should be given tothe ability of a material to be exposed continuously to dampconditions without the growth of mildew or mold. Se

47、e 9.1.6.6.8 ReusabilityConsideration should be given to the easewith which the jacketing material may be removed andreinstalled in its original condition.6.9 AestheticsConsideration should be given to the gen-eral outward appearance of the jacketing material such that itharmonizes with the other fac

48、ilities in the area or the environ-ment.6.10 Color IdentificationConsideration should be given tothe color of the jacketing materials for the purpose of identi-fying the fluid content, the temperature, or both, of each systembeing insulated.6.11 Surface EmittanceConsideration should be given tothe o

49、uter surface emittance, of the system being insulated, forthe purpose of lowering surface temperatures for personnelprotection. See Section 9.1.11.6.12 Surface Burning CharacteristicsConsiderationshould be given to the jacketing exterior surface burningcharacteristics presented by Flame Spread/Smoke DevelopedIndices per Test Method E 84 for the selection of the jacketing.The purposes are generally to determine a comparative surfaceburning behavior of the jacket and to meet building codes thatmaintain specific, not to exceed, index requirements. See 9.1.4.6.1