1、Designation: D4068 15D4068 17 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 oforigin
2、al adoption 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 polyethylene (CPE
3、) sheeting which is used without mastic, bedding, or coatingfor construction of concealed water-containment membranes in applications where there is potential for costly secondary damagefrom leakage, and where very long-term reliable performance is essential. Examples are fountains, pools, planters,
4、 shower and safepans, tile tubs, and similar installations where the membrane is inaccessible once construction is complete. Included arerequirements for composition, strength and toughness, test methods, workmanship criteria, and methods of marking.1.2 Manufacturers have the option to use recycled
5、materials in this product. Recycled materials must be in accordance with therequirements in Section 4.1.3 The test methods used to characterize the sheeting are intended to ensure quality and performance and are not necessarilyadequate for design purposes. Test methods have been selected to be condu
6、cted primarily with liquids that simulate theenvironments to which the membrane will be subjected during actual installation and use.1.4 This specification does not cover water-containment membranes exposed in use to ultraviolet light or direct sunlight.1.5 The values stated in inch-pound units are
7、to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.NOTE 1There is no known ISO equivalent to this standard.1.6 The following safety hazards caveat pertains only to the test method
8、portion, Section 14, of this specification:This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory lim
9、itations prior to use.2. Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTensionD543 Practices for Evaluating the Resistance of Plastics to Chemical ReagentsD618 Practice for Conditioning Plastics for TestingD751 Test Methods for Coated Fab
10、ricsD883 Terminology Relating to PlasticsD1004 Test Method for Tear Resistance (Graves Tear) of Plastic Film and SheetingD1203 Test Methods for Volatile Loss From Plastics Using Activated Carbon MethodsD1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Ele
11、vated TemperatureD1876 Test Method for Peel Resistance of Adhesives (T-Peel Test)D2136 Test Method for Coated FabricsLow-Temperature Bend TestD2240 Test Method for Rubber PropertyDurometer HardnessD4968 Practice for Annual Review of Test Methods and Specifications for PlasticsD5947 Test Methods for
12、Physical Dimensions of Solid Plastics SpecimensD6988 Guide for Determination of Thickness of Plastic Film Test Specimens1 This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building Products.Current editio
13、n approved May 1, 2015March 1, 2017. Published June 2015March 2017. Originally approved in 1981. Last previous edition approved in 20092015 asD4068 09.D4068 15. DOI: 10.1520/D4068-15.10.1520/D4068-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service
14、 at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page 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 v
15、ersion. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users 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.*A Summary of Changes s
16、ection appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products (Withdrawn2015)3E96/E96M Test Methods f
17、or Water Vapor Transmission of Materials2.2 ANSI Document:Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways43. Terminology3.1 Definitions:3.1.1 GeneralDefinitions are in accordance with Terminology D883 unless otherwise indicated.3.1.2 The abbreviation fo
18、r chlorinated polyethylene is CPE.3.1 Definitions:3.1.1 GeneralDefinitions are in accordance with Terminology 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 ho
19、mogeneous composition throughout its thickness. (Note that it is not of asandwich construction with a continuous or semi-continuous layer of one or more materials of different composition enclosedbetween two or more layers of CPE.)3.2.2 monolithic sheetingsheeting manufactured as one piece. (Note th
20、at it is not several thicknesses laminated together, noris it two or more widths lapped and joined with heat or chemicals.)3.2.3 water containment membranea nonporous membrane impervious to water and resistant to permeation by water vaporto an extent that provides a high degree of certainty that sec
21、ondary damage from leakage shall not occur.4. Materials and Manufacture4.1 The sheeting shall be made from a compound that contains more than 50 % chlorinated polyethylene resin by weight of totalresin content, and the CPE resin shall: (a) contain 38 to 46 % chlorine; (b) be made from a linear polye
22、thylene having a densityof not less than 0.95 g/cm2; (c) be substantially amorphous, having a heat of fusion of less than 0.4 cal/g (1.7 kJ/kg), and (d) havea melt viscosity of 1700 6 500 Pas when measured in a capillary rheometer at a melt temperature of 190 6 2 C, and a shearrate of 150 6 10 s.4.2
23、 When recycled materials, as defined in Guide D7209, are used in this product, the material must meet the requirements inSections 3, 4, 5, 6, 7, and 8.4.3 The use of water-soluble compounding ingredients shall be prohibited.4.4 The sheeting shall be homogeneous and monolithic.5. Physical Requirement
24、s5.1 The sheeting shall have an average Shore-A hardness of 7684 6 6 points when ten specimens taken equidistantly acrossthe width of the sheet are tested in accordance with Test Method D2240, using a TypeAdurometer and reading durometer hardnessafter 5 s of presser foot contact with the specimen.5.
25、1.1 The thickness of the test specimens shall be 0.24 in. (6.0 mm) minimum unless it is known that results equivalent to the0.24 in. (6.0 mm) values are obtained with a thinner specimen.5.1.2 The test specimen shall be of solid construction5.1.2.1 A specimen composed of plied sheets is permitted if
26、it has been shown the results are equivalent to a solid specimen.NOTE 2Plied specimens may not agree with those made on solid specimens, as the surfaces of the plied specimens may not be in complete contact.5.1.3 The lateral dimensions of the specimen shall be sufficient to permit measurements at le
27、ast 0.48 in. (12.0 mm) from anyedge.5.1.3.1 Measurements are permitted at a lesser distance from an edge if identical results are obtained as 5.1.3.6. Mechanical Properties6.1 The sheeting shall conform to the mechanical property requirements in Table 1.7. Performance Requirements7.1 The sheeting sh
28、all conform to the performance requirements in Table 2.3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.D4068 1728. Other Requirements
29、8.1 The sheeting shall be capable of being bonded to itself in a manner suitable for making seams and repairs in the field. Themanufacturer shall recommend or furnish methods, materials, or equipment necessary and suitable for this purpose.8.2 Bonds between sheets of material used in fabrication of
30、a water-containment membrane shall conform to the requirementsin Table 3 and shall not reduce the overall resistance of the membrane to permeation or leakage.9. Dimensions and Permissible Variations9.1 The actual width and length of the sheeting shall be as agreed upon between the purchaser and the
31、seller.9.1.1 Sheeting width tolerance shall be +0.5, 0 in. (+12.7, 0 mm).TABLE 1 Mechanical PropertiesProperty Unit SpecificationGrade 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 strength psi (MPa)
32、1200 (8.28),min800 (5.5), minTensile stress at100 % elongation(modulus), transversedirectionpsi (MPa) 400 (2.76),min1200 (8.28),max300 (2.07),min1200 (8.28),maxTensile stress at100 % elongation(modulus)psi (MPa) 400 (2.76),min1200 (8.28),max300 (2.07),min1200 (8.28),maxElongation, at break,transvers
33、e direction% 350, min 300, minElongation, at break % 350, min 300, minTear resistance,transverse directionlbf/in. (kN/m)of width175 (30.6), min 120 (20.9), minTear resistance lbf/in. (kN/m)of width175 (30.6), min 120 (20.9), minTABLE 2 Performance RequirementsProperty Unit SpecificationGrade 1 Grade
34、 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 Water, 1 % solution:Weight change percent 3, max 3, maxDistilled Water:Weight change per
35、cent 2, max 2, maxTABLE 3 Bonded Seam RequirementsProperty Unit SpecificationGrade 1 Grade 2Bonded seam shearstrength, transversedirectionpercent of tensile 75, min 75, minBonded seam shearstrengthpercent of tensile 75, min 75, minBonded seam peelstrength (T-peel)lbf/in. (kN/m) ofseam width10 (2.75)
36、 min 6 (1.65) minD4068 1739.1.2 The length of the sheeting after unrolling and relaxing for 10 min at 73.4 6 3.6F (23 6 2.0 C) shall be no less than thatspecified in the purchase order or contract.9.2 The sheeting shall be divided by grade based on thickness, as follows:9.2.1 Grade 140 mil (1.02 mm)
37、 shall be a minimum of 0.040 in. (1.02 mm) in thickness.9.2.2 Grade 230 mil (0.765 mm) shall be a minimum of 0.030 in. (0.765 mm) in thickness.10. Workmanship, Finish, and Appearance10.1 The sheeting shall be free of pin holes, particles of foreign matter, undispersed raw materials, or other manufac
38、turingdefects 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 free of trim material.10.3 Printing and markings on the sheet shall be legible and not easily removed from the shee
39、t during normal handling,transportation, and installation.10.4 The sheeting shall be colored as agreed upon between the purchaser and the seller.11. Sampling11.1 Sampling for Evaluating Conformance to Physical, Mechanical, and Performance Requirements:11.1.1 One roll, or other equivalent packaged un
40、it, with a minimum continuous sheet of 100 ft2 (9.3 m2) shall be sufficient forcompleting all tests and evaluations in this specification.11.1.2 Select randomly each roll or unit submitted for evaluation from an inventory of regular production stock not older thanone year. Selecting more than one ro
41、ll or unit or selecting from multiple inventory stocks or locations will increase the likelihoodof obtaining a representative sample of contemporary production. The age of stocks from which selections are made is requiredto be documented.11.1.3 Divide all submitted sheet into smaller samples of suff
42、icient size to provide a set of specimens for any one of the testsin this specification. In no case shall a sample be less than 16 ft2 (1.49 m2), nor shall either width or length be less than 3 ft (0.91m).11.1.4 Sample using a statistically acceptable procedure.11.1.5 From this population, select sa
43、mples randomly to provide specimens for each test.11.2 Sampling for In-Plant Quality Control Evaluation:11.2.1 Samples for quality control evaluation shall be a minimum of 25 ft2 (2.5 m2), and completely span the width of thefinished sheet.11.2.2 Select randomly one or more samples from each 10 000
44、ft2 (1 000 m2) for the quality assurance tests specified in Section18 and Table 4.12. Number of Tests and Retests12.1 One set of test units is sufficient to determine conformance. The average result of all samples tested shall conform to therequirements of this specification.12.2 Retesting to determ
45、ine conformance shall be required after any significant change in compound or method of manufacture.12.2.1 Significant changes in compound include addition, elimination, or substitution of any ingredient, changes in ratiosbetween ingredients, change in type or grade of CPE resin, change in supplier
46、or manufacturer, or both, of CPE resin, and changein manufacturer or supplier, or both, of CPE compound or sheet.12.2.2 Changes in compound that are not significant include substitution of one material for another (except CPE resin) wherethe two are essentially identical and changes in material whic
47、h do not remain a part of the sheet after manufacture.NOTE 3Material substitutions include changes in supplier, grade or type.12.2.3 Significant changes in manufacture include blending process (dry blend, wet blend, Banbury mix, or separatecompounding line) or method of fabricating sheet (calender,
48、extrusion, or casting).TABLE 4 Quality Assurance RequirementsProperty Unit SpecificationGrade 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 0.0D4068 17412.2.4 Ch
49、anges in manufacture that are not significant include changes in brands of processing equipment, age of equipment,location of manufacture, personnel, take-off equipment and processes, packaging, and ambient or atmospheric conditions.12.3 Retesting to determine conformance shall occur at least every five years whether or not significant changes have occurred.NOTE 4This requirement is included to monitor cumulative effects of relatively insignificant changes in compound or manufacture over time.12.4 If the results of any test do not confor
