1、Designation: D3841 16 An American National StandardStandard Specification forGlass-Fiber-Reinforced Polyester Plastic Panels1This standard is issued under the fixed designation D3841; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification
3、 covers the classification, materials ofconstruction, workmanship, minimum physical requirements,and methods of testing glass-fiber reinforced polyester plasticpanels intended for use in construction. Panels for specializedor unique applications have the potential to require valuessignificantly abov
4、e or below those stated in this specification.Recommended practices for certain specific applications areincluded as Appendix X1. This specification is not intended torestrict or limit technological changes affecting performancewhen those changes are agreed upon between the purchaserand the seller.1
5、.2 Supplementary information on chemical resistance, re-sistance to heat, and installation practices are provided inAppendix X1.1.3 The classification of these plastic panels into typesbased on relative response to a laboratory test shall not beconsidered a fire hazard classification.1.4 The values
6、stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.5 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in Tables and Figures) shall not be consider
7、edas requirements of this standard.1.6 Fire properties are determined by using laboratoryflammability tests (Test Methods D635, D1929, and E84).1.6.1 This standard is used to measure and describe theresponse of materials, products, or assemblies to heat and flameunder controlled conditions, but does
8、 not by itself incorporateall factors required for fire hazard or fire risk assessment of thematerials, products or assemblies under actual fire conditions.1.6.2 Fire testing is inherently hazardous. Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.7 The f
9、ollowing precautionary caveat pertains only to thetest method portion, Section 8 of this specification. Thisspecification does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this specification to establish appropriate safetya
10、nd health practices and determine the applicability of regu-latory limitations prior to use.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D570 Test Method for Water Absorption of PlasticsD618 Practice for Conditioning Plastics for TestingD635 Test
11、 Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD638 Test Method for Tensile Properties of PlasticsD696 Test Method for Coefficient of Linear Thermal Expan-sion of Plastics Between 30C and 30C with a VitreousSilica DilatometerD790 Test Methods for Fle
12、xural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD883 Terminology Relating to PlasticsD1435 Practice for Outdoor Weathering of PlasticsD1494 Test Method for Diffuse Light Transmission Factorof Reinforced Plastics PanelsD1600 Terminology forAbbreviated Terms
13、 Relating to Plas-ticsD1929 Test Method for Determining Ignition Temperatureof PlasticsD3892 Practice for Packaging/Packing of PlasticsD4364 Practice for Performing Outdoor Accelerated Weath-ering Tests of Plastics Using Concentrated SunlightE72 Test Methods of Conducting Strength Tests of Panelsfor
14、 Building ConstructionE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE631 Terminology of Building Constructions1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.C
15、urrent edition approved May 1, 2016. Published May 2016. Originallyapproved in 1980. Last previous edition approved in 2008 as D3841 97(2008)1.DOI: 10.1520/D3841-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Bo
16、ok of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*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 States1E831 Test Method
17、for Linear Thermal Expansion of SolidMaterials by Thermomechanical AnalysisE903 Test Method for Solar Absorptance, Reflectance, andTransmittance of Materials Using Integrating SpheresE972 Test Method for Solar Photometric Transmittance ofSheet Materials Using SunlightE1084 Test Method for Solar Tran
18、smittance (Terrestrial) ofSheet Materials Using SunlightE1175 Test Method for Determining Solar or PhotopicReflectance, Transmittance, and Absorptance of MaterialsUsing a Large Diameter Integrating SphereG147 Practice for Conditioning and Handling of Nonmetal-lic Materials for Natural and Artificial
19、 Weathering TestsG151 Practice for Exposing Nonmetallic Materials inAccel-erated Test Devices that Use Laboratory Light SourcesG155 Practice for Operating Xenon Arc Light Apparatus forExposure of Non-Metallic Materials3. Terminology3.1 GeneralDefinitions are in accordance with Terminol-ogy D883 and
20、E631 and abbreviations with TerminologyD1600 unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 limited flammabilityless response to fire than gen-eral purpose material when tested under laboratory conditions.NOTE 2Limited flammability is considered a fire hazard cla
21、ssification(see 1.3 and 1.6).4. Classification4.1 Light transmitting panels covered by this specificationare divided into two types, based on relative response to alaboratory flammability test:4.1.1 Type CC1Limited flammability.4.1.2 Type CC2General purpose.NOTE 3Types CC1 and CC2 are classification
22、s incorporated in themajor model building codes. Panels used in other applications are alsoclassified by major model building codes in accordance with appropriatechapters of those codes.4.2 These types are further subdivided in accordance with7.8 by grades based on relative response to weathering te
23、sts:4.2.1 Grade 1Weather resistance.4.2.2 Grade 2General purpose.4.3 Within the classification of type and grade of plasticpanel described in this specification are commercial productswith the following variations as agreed upon between pur-chaser and supplier:4.3.1 Size (Length and Width)The most c
24、ommon nominalsizes currently available are 26 to 60 in. (66.0 to 152.4 cm) inwidth, and 6 to 16 ft (1.8 to 4.9 m) in length. Corrugatedpanels, to approximately 40 ft (12.2 m), and flat sheet in coilsof longer lengths, are generally available.4.3.2 Surface TreatmentsSome manufacturers offer spe-cial
25、surface treatments of various types for the purpose ofimproving durability. Individual suppliers can provide details.4.3.3 Light TransmissionRefer to manufacturers litera-ture for range of transmission available.4.3.4 Solar Energy TransmissionRefer to manufacturersliterature for range of transmissio
26、n available.4.3.5 ColorRefer to manufacturers literature for range ofcolored products available.4.3.6 Load DeflectionRefer to manufacturers literaturefor load and deflection data on specific profiles.4.3.7 Weight Per Square Foot or ThicknessPanels aregenerally designed and sold by weight per square
27、foot, themost common of which are 4 through 12 oz (1.2 through 3.7kg/m2). Other weights are available. Flat sheet is potentiallydesignated and sold by either weight (as indicated above) orthickness, the most common of which are 0.030 through 0.125in. (0.76 through 3.2 mm), as measured in accordance
28、with8.4.1. Other thicknesses are available.NOTE 4Besides standard profiles, special or custom profiles may bedeveloped.5. Materials5.1 The polyester resin used in the panels shall be athermosetting styrenated and acrylated polyester resin com-posed of polymeric esters in which the recurring ester gr
29、oupsare an integral part of the main polymer chain. The resin shallbe reinforced with glass fibers. The polyester resin is permittedto contain additives for various purposes, such as additives toprovide low smoke density or high fire retardancy, catalystresidues, stabilizers, pigments, dyes, and fil
30、lers.6. Workmanship, Finish, and Appearance6.1 The panels will conform to the specific dimensions ofthe profile being produced and shall be fully cured. Panels shallnot contain visual cracks, resin voids, foreign inclusions, orsurface wrinkles that would impair the proper nesting of thecorrugated pa
31、nels, alter the specific dimensions of the panels,or otherwise affect their serviceability.7. Physical Requirements7.1 Size (Length and Width)Tolerance on nominal lengthand width shall be 60.25 in. (66 mm) measured in accordancewith 8.2. Panels exceeding 16 ft in length shall have a lengthtolerance
32、of +0.75 0.125 in. (+19 3.2 mm).7.2 SquarenessPanels shall be within 0.125 in. (3.2 mm)of square when measured in accordance with 8.3.7.3 WeightTolerance on the specified weight of all panelsshall be 610 % when determined in accordance with 8.4.7.3.1 ThicknessWhen a thickness requirement is specifie
33、dfor flat panels in place of standard weight per square foot, thetolerance shall be 610 % when determined in accordance with8.4.1.7.4 ProfileThe pitch and depth of the corrugations shallhave the following tolerances: Pitch 60.0625 in. (65.2 mm)per square foot when measured in accordance with 8.5, an
34、dDepth 60.0625 in. when measured in accordance with 8.6.7.5 ColorColor shall be uniform throughout the sheetwhen examined in accordance with 8.7.7.6 Light TransmissionThe nominal light transmissionfactor shall have a tolerance of 64 % from the nominal factorspecified by purchaser when determined by
35、Test MethodsD1494 or E972.D3841 1627.7 Solar Energy TransmissionThe nominal solar energytransmission shall be a tolerance of 64 % from the nominaltransmission specified by the purchaser when determined byTest Methods E903; E1084;orE1175. Measurements madeusing E903 are to be integrated for air mass
36、1.5.7.8 Weather ResistancePanels are classified for WeatherResistance as Grade 1 or 2 based upon the exudation or lack ofexudation of glass fibers from the panelssurfaces when testedin accordance with Practice D1435.7.9 Coeffcient of Linear Thermal ExpansionThe linearthermal expansion of panels shal
37、l not exceed values specifiedin Table 1 when tested in accordance with Test Methods D696or E831.7.10 Impact ResistanceRefer to X1.4.7.11 Load-Deflection PropertiesThe load-deflection char-acteristics of a corrugated or ribbed panel shall be determinedin accordance with 8.9.7.12 Rate of Burning or Ex
38、tent and Time of Burning, orBothPanels shall be classified as CC1 or CC2 when tested inaccordance with Test Method D635 and when tested in thethickness intended for use as follows:7.12.1 CC1Plastic panels which have a burning extent of1.0 in. (25.4 mm) or less.7.12.2 CC2Plastic panels which have a b
39、urning rate of 2.5in. (63.5 mm)/min or less.NOTE 5These requirements are intended only to differentiate betweenlimited flammability panels and general purpose panels.7.13 Ignition PropertiesAll panels shall have a minimumself-ignition temperature of 650F (343C) when tested inaccordance with Test Met
40、hod D1929.7.14 Physical properties as shown in Table 1 shall bedetermined in accordance with methods specified in 8.11.7.15 Panels shall have the following flame spread index andsmoke developed index when tested in accordance with TestMethod E84.7.15.1 Class A flame spread index: 25, smoke developed
41、index: 4507.15.2 Class B flame spread index: 75, smoke developedindex: 4507.15.3 Class C flame spread index: 200, smoke developedindex: 4508. Test Methods8.1 ConditioningCondition the test specimens in accor-dance with ProcedureAof Method D618 where conditioning isrequired.8.2 Length and WidthLay th
42、e panel on a flat, smoothsurface and measure with a steel tape. Measure the length onthe two sides and the center to the nearest 0.03125 in. (0.8mm), and average the three measurements. Measure the widthon the projected width at each end and in the center to thenearest 0.03125 in., and average the t
43、hree measurements.8.3 SquarenessAny type jig that has two rails perpendicu-lar to one another, each of length at least equal to the length ofthe side of the panel in contact with the rail, is acceptable foruse to determine squareness. Place the panel in the jig so thatthe longest edge of the panel t
44、ouches the horizontal rail alongits entire length, and the vertical (short edge) touches thevertical rail at some point along its entire length. Measure thegap between the vertical rail and the short edge of the panel atthe corner opposite the one touching the rail. Measure to thenearest 0.03125 in.
45、 (0.8 mm). Rotate the panel 180 and repeatthe test.8.4 WeightWeigh the panel on a scale accurate to 61%.Calculate the area on the basis of length and width measure-ments made in accordance with 8.2. Calculate the weight inounces per square foot (or kilograms per square metre).8.4.1 ThicknessMake thi
46、ckness measurements on flat pan-els every 4 in. (101.6 mm) across the width of the panel, at bothends, with a micrometer incorporating an anvil no less than0.375 in. (9.5 mm) in diameter and accurate to 0.001 in. (0.3mm). Average the individual measurements in order to deter-mine the panels nominal
47、thickness.8.5 PitchThe pitch of a profile of a panel is the averagedistance from the crest of one corrugation to the crest of anadjacent corrugation or, in the case of ribbed panels, thedistance from the center of one rib to the center of the nextadjacent rib. Determine the crests of the corrugation
48、s or ribs byplacing a metal straightedge crosswise on the panel so that ittouches the crests. Measure to within 60.0625 in. (65.2mm/m)/ft (304.8 mm) of panel width and divide by the numberof pitches to obtain an average pitch value.8.6 DepthThe depth of the corrugation is the verticaldistance betwee
49、n the plane of the crests and the upper side ofthe sheet at the bottom of the valley. Make ten depthmeasurements, five at each end, to the nearest 0.03125 in. (0.76mm) with a depth micrometer on each specimen and averagethe results.8.7 ColorExamine the panel visually from a distance of10 ft (3 m) for color uniformity by viewing. Minor differencesin intensity of the color due to the uneven dispersion of theglass fibers in the resin shall not be cause for rejection.TABLE 1 Physical PropertiesAProperty ValueBASTMTest Metho
