ASTM D7254-2007 Standard Specification for Polypropylene (PP) Siding《聚丙烯墙板的标准规范》.pdf
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1、Designation: D 7254 07Standard Specification forPolypropylene (PP) Siding1This standard is issued under the fixed designation D 7254; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parenthese
2、s indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification establishes requirements and testmethods for materials, impact strength, appearance, surfaceflame spread, and windload resistance of si
3、ding productsmanufactured from polypropylene material. Methods of indi-cating compliance with this specification are also provided.1.2 The use of polypropylene recycled plastic in this prod-uct shall be in accordance with the requirements in Section 4.1.3 Siding produced to this specification shall
4、be installed inaccordance with manufacturers installation instructions for thespecific product to be installed.NOTE 1Information with regard to siding maintenance shall beobtained from the manufacturer.1.4 The values stated in inch-pound units are to be regardedas the standard. The SI units given in
5、 parentheses are forinformation purposes only.1.5 The following precautionary caveat pertains to the testmethod portion only, Section 6 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 t
6、his standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.NOTE 2There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D 883 Terminology Relating to PlasticsD 1435 Practice for Outdoo
7、r Weathering of PlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 3679 Specification for Rigid Poly(Vinyl Chloride) (PVC)SidingD 3892 Practice for Packaging/Packing of PlasticsD 4101 Specification for Polypropylene Injection and Ex-trusion MaterialsD 4226 Test Methods for Impact
8、Resistance of Rigid Poly-(Vinyl Chloride) (PVC) Building ProductsD 5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled PlasticsD 5206 Test Method for Windload Resistance of RigidPlastic SidingE84 Test Method for Surface Burning Characteristics ofBuilding Materials
9、E 631 Terminology of Building ConstructionsG 147 Practice for Conditioning and Handling of Nonme-tallic Materials for Natural and Artificial Weathering Tests2.2 ASCE Standard:ASCE 7-02 Minimum Design Loads for Buildings andOther Structures33. Terminology3.1 Definitions are in accordance with Termino
10、logiesD 883, D 1600, and E 631, unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 polypropylene sidinga shaped material, made prin-cipally from polypropylene homopolymer, or copolymer,which in some cases may contain fillers and/or reinforcements,that is used to clad
11、 exterior walls of buildings.3.2.2 self-supporting specimena specimen that remains inplace by its own structural characteristics both before andduring the fire test.3.2.3 temperate northern climatein weather testing,aNorth American metropolitan area testing site located within73 to 100 W longitude a
12、nd 37 to 45 N latitude.4. Materials and Manufacture4.1 The siding shall be made principally of polypropylenecompound, prepared from polypropylene homopolymer orcopolymer.4.2 Where polypropylene recycled plastic as defined inGuide D 5033 is used, the siding containing the polypropylenerecycled plasti
13、c shall meet all the requirements in the sections1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved Jan. 1, 2007. Published January 2007.2For referenced ASTM stand
14、ards, 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.3Available from American Society of Civil Engineers (ASCE), 1801 AlexanderBell Dr., Res
15、ton, VA 20191.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.on Terminology (Section 3), on Materials and Manufacture(Section 4), and on Physical Requirements (Section 5).4.3 The polypropylene compound shall be compounded soas to pr
16、ovide the heat stability and weather exposure stabilityrequired for the siding market application.5. Physical Requirements5.1 ColorThe color of the siding shall be within thedefined color parameters for the specific color agreed uponbetween the purchaser and the seller.5.2 Impact ResistanceSiding sh
17、all have a minimum im-pact strength of 35 in-lbf when tested in accordance with 6.2.5.3 WeatheringThe siding shall be free of any visualsurface or structural changes such as peeling, chipping, crack-ing, flaking, or pitting when tested in accordance with 6.3.5.4 Windload ResistanceThe siding panel(s
18、) shall be ableto withstand a minimum static test pressure of 15.73 lbf/ft2(753 Pa) when tested in accordance with 6.4.5.4.1 The static pressure of 15.73 lbf/ft2(753 Pa) wasestablished to withstand structural loading conditions thatoccur in 110 mph (177 km/h) wind-zone areas for elevations of30 ft (
19、9.1 m) and less in exposure category B, and is equivalentto 29.12 lbf/ft2(1394 Pa) design pressure.5.4.1.1 The design-pressure values can be negative (suctionloads) or positive. The negative values are the largest inmagnitude and are the values used for this specification.5.4.1.2 Refer to Annex A1 f
20、or an explanation of how thenegative design pressure was established and for applicationswhere the effective negative design pressure as specified inASCE 7-02 is greater than 29.12 lbf/ft2(1394 Pa) (for ex-ample, wind-zone areas greater than 110 mph (177 km/h) orelevations above 30 ft (9.1 m), or ex
21、posures other thanexposure category B)5.5 Surface Flame SpreadThe siding shall exhibit a flamespread index not exceeding 200 when tested in accordance with6.5.6. Test Methods6.1 GeneralThe inspection and test procedures containedin this section are used to determine the conformance ofproducts to the
22、 requirements of this specification. Statistically-based sampling plans appropriate for each manufacturingprocess are an acceptable means of demonstrating conform-ance with this specification. Each producer shall keep theessential records necessary to document, with a high degree ofassurance, the cl
23、aim that all of the requirements of thisspecification have been met. This section does not precludeadditional sampling and testing of the product, if such sam-pling and testing is agreed upon between the purchaser andmanufacturer.6.2 Impact Resistance:6.2.1 Conditioning and Test ConditionsCondition
24、the testspecimen in accordance with Specification D 4101 and testunder those conditions unless otherwise specified herein.Conditioning time for tests shall be at least 4 hours.6.2.2 Impact TestTest impact resistance of siding in ac-cordance with Test Method D 4226, Procedure A, impactorhead configur
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