1、Designation: C578 17aC578 18Standard Specification forRigid, Cellular Polystyrene Thermal Insulation1This standard is issued under the fixed designation C578; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. 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 specification2 covers the types, physic
3、al properties, and dimensions of cellular polystyrene boards with or withoutfacings or coatings made by molding (EPS) or extrusion (XPS) of expandable polystyrene. Products manufactured to thisspecification are intended for use as thermal insulation for temperatures from -6565 to +165F (-53.9(53.9 t
4、o +73.9C). Thisspecification does not apply to laminated products manufactured with any type of rigid board facer including fiberboard, perliteboard, gypsum board, or oriented strand board.1.1.1 For Type XIII only, this specification covers the physical properties, and dimensions of cellular polysty
5、rene intended foruse as thermal insulation for temperatures from 297 to +165F (183 to +73.9C).When used in pipe, tank, and equipmentthermal insulation applications from 320 to +165F (196 to +73.9C), requirements and discussion applicable to Types IV andXIII are contained in Annex A1.1.2 Consult the
6、manufacturer for specific recommendations and properties in cryogenic conditions.1.2.1 This specification does not cover cryogenic properties except for the k-factors for Type XIII in Appendix X1. For TypeXIII in specific cryogenic applications, the manufacturer and purchaser shall agree upon the ac
7、tual temperature limits and physicalproperty requirements in addition to the k-factors in Appendix X1.1.2 The use of thermal insulation materials covered by this specification may beis potentially regulated by building codes thataddress fire performance. For some end uses, specifiers should need to
8、also address the effect of moisture and wind pressureresistance. Guidelines regarding these end use considerations are included in Appendix X1.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are pr
9、ovided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practice
10、s and determine theapplicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recomm
11、endations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3C165 Test Method for Measuring Compressive Properties of Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flu
12、x Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation1 This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct respon
13、sibility of Subcommittee C16.22 on Organic andNonhomogeneous Inorganic Thermal Insulations.Current edition approved Sept. 1, 2017April 15, 2018. Published September 2017April 2018. Originally approved in 1965. Last previous edition approved in 2017 asC578 17.C578 17a. DOI: 10.1520/C0578-17a.10.1520/
14、C0578-18.2 This specification is similar to ISO 4898-1984, “Cellular PlasticsSpecification for Rigid Cellular Materials Used in the Thermal Insulation of Buildings,” in title only.The scope and technical content are significantly different.ISO standards are available from American National Standards
15、 Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. ForAnnual Book ofASTM Standardsvolume information, refer to the standards Document Summary pag
16、e on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that u
17、sers consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C272 Test Method for Water
18、 Absorption of Core Materials for Structural Sandwich ConstructionsC303 Test Method for Dimensions and Density of Preformed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Properties of Pipe InsulationC390 Practice for Sampling and Acceptance of Thermal Insulati
19、on LotsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC550 Test Method for Measuring Trueness and Squareness of Rigid Block and Board Thermal InsulationC870 Practice for Conditioning of Thermal Insulating MaterialsC1045 Practice for Calcula
20、ting Thermal Transmission Properties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of Thermal InsulationC1114 Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater ApparatusC1303 Test Method f
21、or Predicting Long-Term Thermal Resistance of Closed-Cell Foam InsulationC1363 Test Method for Thermal Performance of Building Materials and EnvelopeAssemblies by Means of a Hot BoxApparatusC1512 Test Method for Characterizing the Effect of Exposure to Environmental Cycling on Thermal Performance of
22、 InsulationProductsD1600 Terminology for Abbreviated Terms Relating to PlasticsD1621 Test Method for Compressive Properties of Rigid Cellular PlasticsD1622 Test Method for Apparent Density of Rigid Cellular PlasticsD2126 Test Method for Response of Rigid Cellular Plastics to Thermal and Humid AgingD
23、2863 Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics(Oxygen Index)E84 Test Method for Surface Burning Characteristics of Building MaterialsE96/E96M Test Methods for Water Vapor Transmission of MaterialsE176 Terminology of Fire Standards2.2 CAN
24、/ULC Standard4CAN/ULC S770 Standard Test Method for the Determination of Long-Term Thermal Resistance of Closed-Cell ThermalInsulating Foams3. Terminology3.1 Definitions:3.1.1 Terms used in this specification are defined in Terminology C168.3.1.2 Terms used in this specification that relate to fire
25、standards are defined in Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 EPSletter designation for the molded expanded polystyrene thermal insulation classified by this specification. It isdefined as cellular plastic product manufactured from pre-expanded polystyrene beads
26、subsequently molded into desired shapesand sizes resulting in a product which is rigid with closed cellular structure.3.2.2 RCPSletter designations for the rigid cellular polystyrene thermal insulation classified by this specification that identifiesthe product as rigid cellular polystyrene.3.2.3 PS
27、used in this specification to represent polystyrene in accordance with Terminology D1600.3.2.4 XPSletter designation for the extruded expanded polystyrene thermal insulation classified by this specification. It isdefined as cellular plastic product manufactured in a one stage process by extrusion an
28、d expansion of the base polymer in thepresence of blowing agent(s) resulting in a product which is rigid with closed cellular structure.4. Classification4.1 This specification covers types of RCPS thermal insulations currently commercially available as described by the physicalproperty requirements
29、in Table 1.5. Ordering Information5.1 Acquisition documents shall specify the following:5.1.1 Title, number, and year of this specification,5.1.2 Type (see Table 1),5.1.3 R-value or thickness required (see Tables 1 and 2),5.1.3.1 Thermal Resistance/Thickness RelationshipThe It is possible that the t
30、hermal resistance (R-value) and the thermalresistivity (R-value/inch) of RCPS thermal insulation maywill vary with thickness. Therefore, when ordering, specify the R-valueor the thickness, or both. For additional information, see Practice C1045.5.1.4 Density, if other than specified in Table 1,4 Ava
31、ilable from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas, WA 98607-8542, http:/.C578 1825.1.5 Tolerance, if other than specified (see 8.2),5.1.6 Length and width required (see Table 2 and 8.1),5.1.7 If other than straight edges are required (see 8.3),5.1.8 If either ship-lap or tongue-a
32、nd-groove edges are required (see 8.6),5.1.9 Tapered InsulationSpecial ordering information. In addition to other applicable requirements in Section 5 (Note 1),acquisition documents for tapered RCPS thermal insulation shall specify the following:5.1.9.1 Minimum starting thickness,5.1.9.2 Slope, in./
33、ft (mm/m),5.1.9.3 Average R-value,TABLE 1 Physical Property Requirements of RCPS Thermal InsulationNOTE 1The It is possible that values for properties listed in this table maywill be affected by the presence of a surface skin which is a result of themanufacturing process. The values for Type XIII pr
34、operties listed in this table must be generated on material with the surface skin removed. Whereproducts are tested with skins-in-place, this condition shall be noted in the test report.NOTE 2Type III has been deleted because it is no longer available.NOTE 3In addition to the thermal resistance valu
35、es in Table 1, values at mean temperatures of 25 2F (-4 1C), 40 2F (4 1C), and 110 2F (43 1C) are provided in X1.8X1.7 for information purposes.NOTE 4For Type XIII, in addition to the Thermal resistance property requirements shown in Table 1, there are Apparent Thermal Conductivityproperty values sh
36、own for informational purposes in Table X1.2 of Appendix X1.NOTE 4Values quoted are maximum values for 1.00 in. (25.4 mm) thick samples with natural skins intact. Lower values will result for thickermaterials. Where water vapor permeance is a design issue, consult manufacturer.NOTE 5The It is accept
37、able to determine the values for thermal resistance listed in this table may be determined on product at a thickness other than1 in. (25.4 mm) in accordance with 7.2.2.1. When tested at a thickness other than 1 in. (25.4 mm), the thermal resistance per inch shall meet the minimumrequirement.NOTE 6Ty
38、pes XI, I, VIII, II, IX, XIV and XV are typically EPS insulation. Types XII, X, XIII, IV, VI, VII and V are typically XPS insulation.Classification TypeXITypeITypeVIIITypeIITypeIXTypeXIVTypeXVTypeXIITypeXTypeXIIITypeIVTypeVITypeVIITypeVCompressive resistance atyield or 10 % deformation,whichever occ
39、urs first(with skins intact), min, psi(kPa)5.0(35)10.0(69)13.0(90)15.0(104)25.0(173)40.0(276)60.0(414)15.0(104)15.0(104)20.0(138)25.0(173)40.0(276)60.0(414)100.0(690)Thermal resistance of 1.00-in.(25.4-mm) thickness, min,Fft2h/Btu (Km2/W)3.1(0.55)3.6(0.63)3.8(0.67)4.0(0.70)4.2(0.74)4.2(0.74)4.3(0.76
40、)4.6(0.81)5.0(0.88)3.9(0.68)5.0(0.88)5.0(0.88)5.0(0.88)5.0(0.88)Mean temperature:75 2F (24 1C)Flexural strength, min, psi (kPa) 10(70)25(173)30(208)35(240)50(345)60(414)75(517)40(276)40(276)45(310)50(345)60(414)75(517)100(690)Water vapor permeance of1.00-in. (25.4-mm) thickness(See Note 5.), max, pe
41、rm(ng/Pasm2)5.0(287)5.0(287)3.5(201)3.5(201)2.5(143)2.5(143)2.5(143)1.5(86)1.5(86)2.0(114)1.5(86)1.1(63)1.1(63)1.1(63)Water vapor permeance of1.00-in. (25.4-mm) thickness(See Note 4.), max, perm(ng/Pasm2)5.0(287)5.0(287)3.5(201)3.5(201)2.5(143)2.5(143)2.5(143)1.5(86)1.5(86)2.0(114)1.5(86)1.1(63)1.1(
42、63)1.1(63)Water absorption by totalimmersion, max, volume %4.0 4.0 3.0 3.0 2.0 2.0 2.0 0.3 0.3 1.0 0.3 0.3 0.3 0.3Dimensional stability (changein dimensions), max,%2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0Oxygen index, min, volume % 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.
43、0 24.0 24.0 24.0Density, min, lb/ft3 (kg/m3) 0.70(12)0.90(15)1.15(18)1.35(22)1.80(29)2.40(38)3.00(48)1.20(19)1.30(21)1.60(26)1.45(23)1.80(29)2.20(35)3.00(48)TABLE 2 Common Dimensions of RCPS Thermal InsulationType XI, I, VIII, II, IX, XIV, XV X, IV, XII VI, VII V XIIIWidth, in. (mm) 12 to 48 (305 to
44、 1219) 16, 24, 48 (406, 610, 1219) 24 (610) 16 (406) 14 to 20 (356 to508)Length, in. (mm) 48 to 192 (1219 to 4877) 48, 96 108 (1219, 2438, 2743) 48, 96, (1219, 2438) 96 (2438) 36 to 112 (914 to2845)Thickness, in. (mm) 38 to 24 (9.5 to 610) 12 to 4 (13 to 102) 1 to 4 (25 to 102) 1 to 4 (25 to 102) 7
45、to 10 (178 to254)C578 1835.1.9.4 Minimum thickness,5.1.9.5 Shop DrawingsThe tapered insulation supplier shall provide shop drawings to illustrate installation patterns anddimensions for each tapered module,5.1.10 Sampling, if different (see 10.1),5.1.11 If a certificate of compliance is required (se
46、e 14.1), and5.1.12 If marking is other than specified (see 15.1).NOTE 1Physical properties of tapered insulation should be determined on blocks of RCPS thermal insulation before the insulation is tapered.5.1.13 Type XIIISpecial ordering information. In addition to other applicable requirements in Se
47、ction 5, acquisitiondocuments for Type XIII thermal insulation shall specify if presence of surface skins is required.6. Materials and Manufacture6.1 RCPS thermal insulation shall be formed by the expansion of polystyrene resin beads or granules in a closed mold, or bythe expansion of polystyrene ba
48、se resin in an extrusion process. RCPS thermal insulation shall be of uniform density and haveessentially closed cells. All RCPS thermal insulation shall contain sufficient flame retardants to meet the oxygen indexrequirements of Table 1.7. Physical Requirements7.1 Inspection Requirements:7.1.1 The
49、physical requirements listed in this section are defined as inspection requirements (refer to Practice C390).7.1.2 All dimensional requirements are described in Section 8.7.1.3 All workmanship, finish, and appearance requirements are described in Section 9.7.1.4 Density shall be in accordance with Table 1.NOTE 2For lots of 150 units or less, the tightened inspection sampling plan in Practice C390 will be followed.7.2 Qualification Requirements:7.2.1 The physical properties listed in this section of the
