1、Designation: D4068 15 An American National StandardStandard Specification forChlorinated Polyethylene (CPE) Sheeting for ConcealedWater-Containment Membrane1This standard is issued under the fixed designation D4068; the number immediately following the designation indicates the year oforiginal adopt
2、ion or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers flexible chlorinated polyethyl-ene (CPE) sheet
3、ing which is used without mastic, bedding, orcoating for construction of concealed water-containment mem-branes in applications where there is potential for costlysecondary damage from leakage, and where very long-termreliable performance is essential. Examples are fountains,pools, planters, shower
4、and safe pans, tile tubs, and similarinstallations where the membrane is inaccessible once con-struction is complete. Included are requirements forcomposition, strength and toughness, test methods, workman-ship criteria, and methods of marking.1.2 Manufacturers have the option to use recycled materi
5、alsin this product. Recycled materials must be in accordance withthe requirements in Section 4.1.3 The test methods used to characterize the sheeting areintended to ensure quality and performance and are notnecessarily adequate for design purposes. Test methods havebeen selected to be conducted prim
6、arily with liquids thatsimulate the environments to which the membrane will besubjected during actual installation and use.1.4 This specification does not cover water-containmentmembranes exposed in use to ultraviolet light or direct sun-light.1.5 The values stated in inch-pound units are to be rega
7、rdedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.NOTE 1There is no known ISO equivalent to this standard.1.6 The following safety hazards caveat pertains only to thetest method portion, Sect
8、ion 14, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prio
9、r to use.2. Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD618 Practice for Conditioning Plastics for TestingD751 Test Methods for Coated FabricsD883 Term
10、inology Relating to PlasticsD1004 Test Method for Tear Resistance (Graves Tear) ofPlastic Film and SheetingD1203 Test Methods for Volatile Loss From Plastics UsingActivated Carbon MethodsD1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic Sheeting or Film at ElevatedTemperature
11、D1876 Test Method for Peel Resistance of Adhesives (T-Peel Test)D2136 Test Method for Coated FabricsLow-TemperatureBend TestD2240 Test Method for Rubber PropertyDurometer Hard-nessD4968 Guide for Annual Review of Test Methods andSpecifications for PlasticsD5947 Test Methods for Physical Dimensions o
12、f SolidPlastics SpecimensD6988 Guide for Determination of Thickness of Plastic FilmTest SpecimensD7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and Products (With-drawn 2015)3E96/E96M Test Methods for Water Vapor Transmission ofMaterials1This specification
13、 is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved May 1, 2015. Published June 2015. Originallyapproved in 1981. Last previous edition approved in 2009 as D4068 09. DOI:10.1520/D4068
14、-15.2For 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 website.3The last approved version of this historical standard is
15、 referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 ANSI Document:Safety Code for Safety Glazing Materials for Glazing MotorVehicles Operating
16、 on Land Highways43. Terminology3.1 Definitions:3.1.1 GeneralDefinitions are in accordance with Termi-nology D883 unless otherwise indicated.3.1.2 The abbreviation for chlorinated polyethylene is CPE.3.2 Definitions of Terms Specific to This Standard:3.2.1 homogeneous sheetingsheeting that is of hom
17、oge-neous composition throughout its thickness. (Note that it is notof a sandwich construction with a continuous or semi-continuous layer of one or more materials of different compo-sition enclosed between two or more layers of CPE.)3.2.2 monolithic sheetingsheeting manufactured as onepiece. (Note t
18、hat it is not several thicknesses laminatedtogether, nor is it two or more widths lapped and joined withheat or chemicals.)3.2.3 water containment membranea nonporous mem-brane impervious to water and resistant to permeation by watervapor to an extent that provides a high degree of certainty thatsec
19、ondary damage from leakage shall not occur.4. Materials and Manufacture4.1 The sheeting shall be made from a compound thatcontains more than 50 % chlorinated polyethylene resin byweight of total resin content, and the CPE resin shall: (a)contain 38 to 46 % chlorine; (b) be made from a linearpolyethy
20、lene having a density of not less than 0.95 g/cm2;(c)be substantially amorphous, having a heat of fusion of less than0.4 cal/g (1.7 kJ/kg), and (d) have a melt viscosity of 1700 6500 Pas when measured in a capillary rheometer at a melttemperature of 190 6 2 C, and a shear rate of 150 6 10 s.4.2 When
21、 recycled materials, as defined in Guide D7209,are used in this product, the material must meet the require-ments in Sections 3, 4, 5, 6, 7, and 8.4.3 The use of water-soluble compounding ingredients shallbe prohibited.4.4 The sheeting shall be homogeneous and monolithic.5. Physical Requirements5.1
22、The sheeting shall have an average Shore-A hardness of76 6 6 points when ten specimens taken equidistantly acrossthe width of the sheet are tested in accordance with TestMethod D2240, using a Type A durometer and reading durom-eter hardness after5sofpresser foot contact with thespecimen.5.1.1 The th
23、ickness of the test specimens shall be 0.24 in.(6.0 mm) minimum unless it is known that results equivalent tothe 0.24 in. (6.0 mm) values are obtained with a thinnerspecimen.5.1.2 The test specimen shall be of solid construction5.1.2.1 A specimen composed of plied sheets is permitted ifit has been s
24、hown the results are equivalent to a solidspecimen.NOTE 2Plied specimens may not agree with those made on solidspecimens, as the surfaces of the plied specimens may not be in completecontact.5.1.3 The lateral dimensions of the specimen shall besufficient to permit measurements at least 0.48 in. (12.
25、0 mm)from any edge.5.1.3.1 Measurements are permitted at a lesser distancefrom an edge if identical results are obtained as 5.1.3.6. Mechanical Properties6.1 The sheeting shall conform to the mechanical propertyrequirements in Table 1.7. Performance Requirements7.1 The sheeting shall conform to the
26、performance require-ments in Table 2.8. Other Requirements8.1 The sheeting shall be capable of being bonded to itselfin a manner suitable for making seams and repairs in the field.The manufacturer shall recommend or furnish methods,materials, or equipment necessary and suitable for this purpose.8.2
27、Bonds between sheets of material used in fabrication ofa water-containment membrane shall conform to the require-ments in Table 3 and shall not reduce the overall resistance ofthe membrane to permeation or leakage.9. Dimensions and Permissible Variations9.1 The actual width and length of the sheetin
28、g shall be asagreed upon between the purchaser and the seller.9.1.1 Sheeting width tolerance shall be +0.5, 0 in. (+12.7,0 mm).9.1.2 The length of the sheeting after unrolling and relaxingfor 10 min at 73.4 6 3.6F (23 6 2.0 C) shall be no less thanthat specified in the purchase order or contract.9.2
29、 The sheeting shall be divided by grade based onthickness, as follows:9.2.1 Grade 140 mil (1.02 mm) shall be a minimum of0.040 in. (1.02 mm) in thickness.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Mechanical
30、PropertiesProperty UnitSpecificationGrade 1 Grade 2Thickness in. (mm) 0.040 (1.02),min0.030 (0.0765),minTensile strength,transverse directionpsi (MPa) 1200 (8.28),min800 (5.5), minTensile stress at100 % elongation(modulus), transversedirectionpsi (MPa) 400 (2.76),min1200 (8.28),max300 (2.07),min1200
31、 (8.28),maxElongation, at break,transverse direction% 350, min 300, minTear resistance,transverse directionlbf/in. (kN/m)of width175 (30.6), min 120 (20.9), minD4068 1529.2.2 Grade 230 mil (0.765 mm) shall be a minimum of0.030 in. (0.765 mm) in thickness.10. Workmanship, Finish, and Appearance10.1 T
32、he sheeting shall be free of pin holes, particles offoreign matter, undispersed raw materials, or other manufac-turing defects that might affect serviceability.10.2 The sheeting shall be free of blisters, craters, pimples,pits, crazing, and thin spots. Sheet edges shall be straight,parallel, and fre
33、e of trim material.10.3 Printing and markings on the sheet shall be legible andnot easily removed from the sheet during normal handling,transportation, and installation.10.4 The sheeting shall be colored as agreed upon betweenthe purchaser and the seller.11. Sampling11.1 Sampling for Evaluating Conf
34、ormance to Physical,Mechanical, and Performance Requirements:11.1.1 One roll, or other equivalent packaged unit, with aminimum continuous sheet of 100 ft2(9.3 m2) shall be suffi-cient for completing all tests and evaluations in this specifica-tion.11.1.2 Select randomly each roll or unit submitted f
35、orevaluation from an inventory of regular production stock notolder than one year. Selecting more than one roll or unit orselecting from multiple inventory stocks or locations willincrease the likelihood of obtaining a representative sample ofcontemporary production. The age of stocks from whichsele
36、ctions are made is required to be documented.11.1.3 Divide all submitted sheet into smaller samples ofsufficient size to provide a set of specimens for any one of thetests in this specification. In no case shall a sample be less than16 ft2(1.49 m2), nor shall either width or length be less than 3ft
37、(0.91 m).11.1.4 Sample using a statistically acceptable procedure.11.1.5 From this population, select samples randomly toprovide specimens for each test.11.2 Sampling for In-Plant Quality Control Evaluation:11.2.1 Samples for quality control evaluation shall be aminimum of 25 ft2(2.5 m2), and comple
38、tely span the width ofthe finished sheet.11.2.2 Select randomly one or more samples from each10 000 ft2(1 000 m2) for the quality assurance tests specifiedin Section 18 and Table 4.12. Number of Tests and Retests12.1 One set of test units is sufficient to determine confor-mance. The average result o
39、f all samples tested shall conformto the requirements of this specification.12.2 Retesting to determine conformance shall be requiredafter any significant change in compound or method ofmanufacture.12.2.1 Significant changes in compound include addition,elimination, or substitution of any ingredient
40、, changes in ratiosbetween ingredients, change in type or grade of CPE resin,change in supplier or manufacturer, or both, of CPE resin, andchange in manufacturer or supplier, or both, of CPE compoundor sheet.12.2.2 Changes in compound that are not significant includesubstitution of one material for
41、another (except CPE resin)where the two are essentially identical and changes in materialwhich do not remain a part of the sheet after manufacture.NOTE 3Material substitutions include changes in supplier, grade ortype.12.2.3 Significant changes in manufacture include blendingprocess (dry blend, wet
42、blend, Banbury mix, or separatecompounding line) or method of fabricating sheet (calender,extrusion, or casting).12.2.4 Changes in manufacture that are not significantinclude changes in brands of processing equipment, age ofequipment, location of manufacture, personnel, take-off equip-ment and proce
43、sses, packaging, and ambient or atmosphericconditions.12.3 Retesting to determine conformance shall occur at leastevery five years whether or not significant changes haveoccurred.NOTE 4This requirement is included to monitor cumulative effects ofrelatively insignificant changes in compound or manufa
44、cture over time.TABLE 2 Performance RequirementsProperty UnitSpecificationGrade 1 Grade 2Volatile Loss at 158F (70C):Weight change percent loss 1.5, max 1.5, maxMicroorganism Resistance:Weight change percent 5, max 5, maxChemical Resistance:Sodium Hydroxide:Weight change percent 5, max 5, maxSoapy W
45、ater, 1 % solution:Weight change percent 3, max 3, maxDistilled Water:Weight change percent 2, max 2, maxTABLE 3 Bonded Seam RequirementsProperty UnitSpecificationGrade 1 Grade 2Bonded seam shearstrength, transversedirectionpercent of tensile 75, min 75, minBonded seam peelstrength (T-peel)lbf/in. (
46、kN/m) ofseam width10 (2.75) min 6 (1.65) minTABLE 4 Quality Assurance RequirementsProperty UnitSpecificationGrade 1 Grade 2Thickness in. (mm) 0.040 (1.02) 0.030 (0.765)Pinholes . . . none noneShrinkage percent 5, max 5, maxWidth tolerance in. (mm) +0.5 (0.0) +0.5 (0.0)Length tolerance in. (mm) 0.0 0
47、.0D4068 15312.4 If the results of any test do not conform to therequirements of this specification, retesting to determine con-formity is performed only after the purchaser and supplieragree to the retesting. However, this provision shall not be usedto lower a minimum requirement, omit, substitute,
48、or modify atest or requirement, or alter specification limits.13. Specimen Preparation13.1 Conditioning:13.1.1 Condition all physical, mechanical, and performancetest specimens at 73.4 6 3.6F (23.0 6 2.0 C) and 50 6 10 %relative humidity for not less than 40 h in accordance withProcedure A of Method
49、s D618 prior to testing or startingenvironmental and chemical exposures.13.1.2 Recondition all environmental and chemical expo-sure samples at 73.4 6 3.6F (23.0 6 2.0 C) and 50 6 10 %relative humidity for not less than 40 h in accordance withProcedure A of Methods D618 following removal from expo-sure and prior to physical or mechanical property testing.13.1.3 Condition in-plant quality assurance specimens at73.4 6 3.6F (23.0 6 2.0C)for2hinairprior to testing.13.2 Bonded Seam Samples:13.2.1 Bonded seam samples from which specimens are tob
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