1、Designation: D 7446 09Standard Specification forStructural Insulated Panel (SIP) Adhesives for LaminatingOriented Strand Board (OSB) to Rigid Cellular PolystryeneThermal Insulation Core Materials1This standard is issued under the fixed designation D 7446; the number immediately following the designa
2、tion indicates the year oforiginal 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. Scope1.1 This specification is designed to
3、 evaluate adhesivessuitable for the bonding of oriented strand board (OSB) to rigidcellular polystyrene insulation core materials for general struc-ture use.1.2 The requirements of the structural insulated panel (SIP)adhesive are based on the performance of the adhesive asmeasured by:1.2.1 Resistanc
4、e to shear by compression loading in ambi-ent conditions and after accelerated aging.1.2.2 Resistance to tensile loading in ambient conditionsand after accelerated aging.1.2.3 Resistance to creep (deformation) under static load inambient conditions and after accelerated aging.1.2.4 Tensile and shear
5、 strength to polystyrene core materi-als.1.3 The classification of the adhesive formulation is basedon, but not limited to the adhesives industry accepted genericnames, for example: phenol-resorcinol, emulsion polymerisocyanate, one and two-part urethane. The type of adhesiveapplication and curing t
6、erminology are also usually includedfor classification purposes such as cold-setting phenol resorci-nol, heat-cured phenol resorcinol, and hot melt one componenturethane.1.4 Evaluation of adhesive performance at high temperatureconditions, such as during a fire exposure, is beyond the scopeof this s
7、pecification.1.5 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to
8、establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 273/C 273M Test Method for Shear Properties of Sand-wich Core MaterialsC 297/C 297M Test Method for Flatwise Tensile Strengthof Sand
9、wich ConstructionsC 578 Specification for Rigid, Cellular Polystyrene ThermalInsulationD 572 Test Method for RubberDeterioration by Heat andOxygenD 905 Test Method for Strength Properties of AdhesiveBonds in Shear by Compression LoadingD 907 Terminology of AdhesivesD 1183 Practices for Resistance of
10、 Adhesives to CyclicLaboratory Aging ConditionsD 1583 Test Method for Hydrogen Ion Concentration ofDry Adhesive FilmsD 2294 Test Method for Creep Properties of Adhesives inShear by Tension Loading (Metal-to-Metal)D 4300 Test Methods for Ability of Adhesive Films toSupport or Resist the Growth of Fun
11、giD 4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Base MaterialsD 4444 Test Method for Laboratory Standardization andCalibration of Hand-Held Moisture MetersE4 Practices for Force Verification of Testing Machines2.2 Other Standards:PS2 Performance Standard for Wood-Base
12、d Structural-UsePanels31This specification is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.70 on ConstructionAdhesives.Current edition approved Sept. 1, 2009. Published October 2009.2For referenced ASTM standards, visit the ASTM websit
13、e, 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 National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 1070, Gaithersburg, MD
14、20899-1070, http:/www.nist.gov.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ISO 17025 General Requirements for the Competence ofTesting and Calibration Laboratories43. Terminology3.1 DefinitionsMany terms in this specification are
15、 de-fined in Terminology D 907.3.2 Definitions of Terms Specific to This Standard:3.2.1 core material, nlocated between structural insulatedpanel facings; for this specification, consists of rigid cellularpolystyrene thermal insulation, either expanded polystyrene(EPS) or extruded polystyrene (XPS)
16、that conforms to Speci-fication C 578.3.2.2 facings, nthe outer layers of a structural insulatedpanel typically consisting of oriented strand board.3.2.3 oriented strand board (OSB), na mat formed panelproduct with oriented layers resulting in directional properties.3.2.3.1 DiscussionOriented strand
17、 board is comprisedprimarily of wood strands bonded with exterior adhesiveformulations under heat and pressure. Design capacities arereferenced to the primary and secondary structural axis, whichtypically correspond to the manufacturing machine and cross-machine directions, respectively. The primary
18、 direction is oftenreferred to as the strength direction.3.2.4 practical equilibrium, nphysical state in which thematerial weight does not change more than 0.5 % in 24 h.3.2.5 standard conditions, nconsist of a controlled envi-ronment set at 23 6 2C (73 6 3F) and 65 6 3 % relativehumidity (RH).3.2.6
19、 structural insulated panel (SIP), nfactory manufac-tured assembly consisting of a rigid polystyrene bonded with astructural adhesive between two rigid facings such as OSB.4. Significance and Use4.1 This specification addresses minimum performance cri-teria for adhesives used to laminate oriented st
20、rand board(OSB) structural panel facing material to expanded or extrudedpolystyrene core materials. Adhesive performance is based ontests that simulate exposure to moisture, temperature, seasonalweathering, and creep. Additionally, the adhesive is to demon-strate resistance to oxidation, mold, chemi
21、cal reagents, andcompatibility to the specific laminating materials.4.2 The adhesive manufacturers can use this specificationfor new product development and quality control purposes.4.3 Structural insulated panel manufacturers rely on anadhesive performance specification that determines its suitabil
22、-ity before use.4.4 Performance of the SIP adhesive when evaluated inaccordance with this specification aids in determining thesuitability of the adhesive for laminating OSB facings to rigidcellular polystyrene core materials in the manufacture ofstructural insulated panels.5. Fillers and Extenders5
23、.1 If amylaceous or protein fillers and extenders are used,the adhesive shall not only pass requirements of this specifi-cation but, in addition, possess antifungal properties to inhibitthe growth of selected fungal species when tested in accor-dance with Test Method D 4300. The adhesive manufacture
24、rsliterature shall indicate whether such materials are present.6. Apparatus6.1 Testing Machineshall conform to the requirements ofand have the capabilities of the machines prescribed in TestMethods C 297/C 297M, C 273/C 273M, and D 905 and havean accuracy of 61 % when calibrated in accordance withPr
25、actices E4 requirements. The grips shall be capable ofsecurely grabbing the specimen throughout the test withoutallowing the specimen to slip. The grips shall be self-aligning.6.2 Temperature and RH-Controlling EquipmentTheequipment shall be capable of maintaining the test temperatureto 63C (65F) an
26、d the relative humidity to 63%.7. Chemical Requirements7.1 The cured adhesive film shall develop a pH value of notless than 2.5 when tested in accordance with Test MethodD 1583.8. Physical Requirements8.1 Adhesive manufacturer recommendations for prepara-tion, application, and handling of the SIP ad
27、hesive shall ensureproper usage and maintain product integrity. The adhesivemanufacturer shall furnish written instructions stating thegeneral chemical type of adhesive, its storage and mixingprocedure, the method of surface preparation with materials tobe laminated, and any other data that is perti
28、nent to the use ofthe adhesive in the manufacture of structural insulated panels.8.2 The adhesive shall pass the tests required by thisspecification. See Table 1, Table 2, and Section 10. Theadhesive manufacturers application specification sheet shallprovide application instructions which include th
29、e limitingconditions.8.2.1 The adhesive manufacturer is to provide specificapplication instructions for the test adhesive related to thepreparation of test assemblies required by this specificationincluding both Douglas-fir to Douglas-fir and OSB to Core toOSB.8.3 Limiting conditions are conditions
30、that must be con-trolled within maximums, minimums, or ranges so that theadhesive can function as designed. These conditions include,but are not limited to the following:8.3.1 Maximum storage life of adhesive;8.3.2 Assembly conditions including temperature and hu-midity;8.3.3 Allowable moisture cont
31、ent and temperature for fac-ings and core materials;8.3.4 Mixing ratios, if applicable;8.3.5 Pot life, if applicable;8.3.6 Application method: applied to one surface or bothcontracting surfaces:8.3.7 Spread rate expressed as weight per unit area andtolerance;8.3.8 Open and closed assembly times;8.3.
32、9 Laminating pressure and press time;4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.D74460928.3.10 Curing conditions such as time, temperature, andhumidity.9. Qualification Tests9.1 Douglas-fir to Douglas-fir Qualificati
33、on Series (Table 1)and OSB to Core to OSB Qualification Series (Table 2).10. Test Requirements10.1 Douglas-fir to Douglas-fir:10.1.1 Test Method D 905 Block Shear Strength:10.1.1.1 Dry Shear TestThe average shear strength ofbonded Douglas-fir specimens shall be a minimum of 7033 kPa(1020 psi) at 12
34、% moisture content.NOTE 1The 7033 kPa (1020 psi) requirement is based on 90 % of theshear strength parallel to grain at 12 % moisture content from Table 4-3 ofthe 1999 Wood Handbook for Douglas-fir.510.1.1.2 Practices D 1183 Test Condition “C”After cy-cling bonded Douglas-fir specimens in accordance
35、 with Prac-tices D 1183 “C” procedure (see Table 3), the average shearstrength shall be equal to or greater than 80 % of the averageshear strength of solid Douglas-fir specimens exposed to thesame accelerated aging procedure. Preparation details for solidDouglas-fir specimens are located in 14.1, 14
36、.5, and Fig. 1.10.1.1.3 Soak/Re-dryAfter cycling bonded Douglas-firspecimens in accordance with the soak/re-dry procedure (seeTable 3), the average shear strength shall be equal to or greaterthan 80 % of the average shear strength of solid Douglas-firspecimens exposed to the same accelerated aging p
37、rocedure.Specimen preparation details for solid Douglas-fir specimensare located in 14.1, 14.5, and Fig. 1.10.1.1.4 Oxidation Resistance TestAfter cycling bondedDouglas-fir specimens in accordance with procedures indicatedin 14.7 the average shear strength shall be equal to or greaterthan 80 % of th
38、e average dry shear strength of bondedDouglas-fir specimens tested in 10.1.1.1.10.1.1.5 Mold Resistance Test (when required)After con-ditioning and aging bonded Douglas-fir specimens in accor-dance with 14.8 procedure, the average shear strength shall beequal to or greater than 90 % of the dry shear
39、 strength of thebonded Douglas-fir specimens tested in 10.1.1.1.10.1.2 Douglas-fir to Douglas-fir Tensile Strength:10.1.2.1 Dry Tensile Bond StrengthThe minimum averagedry tensile strength of bonded Douglas-fir specimens shall be2110 kPa (306 psi) at 12 % moisture content.NOTE 2The 306 psi value is
40、based on 90 % of the Wood HandbookTable 4-2,5Tension, perpendicular to grain-maximum tensile strength for5Available from U. S. Department of Agriculture, Forest Products Laboratory,One Gifford Pinchot Drive Madison, WI 53726, http:/www.fpl.fs.fed.us.TABLE 1 Douglas-fir to Douglas-fir Qualification S
41、eriesTest TypeShear(Test Method D 905)Tension(Test Method C 297/C 297M)Creep(Test Method D 2294)Specimen Type Solid Douglas-fir Bonded Douglas-fir Solid Douglas-fir Bonded Douglas-fir Bonded Douglas-firTreatment NA Dry Shear NA Dry Tensile UncontrolledReference Section NA 14.5 NA 14.6 14.9.7 and Tab
42、le 3Minimum Requirements NA 7033 kPa (1020 psi) NA 2110 kPa (306 psi) 344.7 kPa (50 psi)for 30 daysReference Section NA 10.1.1.1 NA 10.1.2.1 10.1.3Treatment Practices D 1183 “C” Practices D 1183 “C” Practices D 1183 “C” Practices D 1183 “C” Practices D 1183 “C”Reference Section 14.5.4 14.5.3 14.6.3
43、14.6.3 14.9.9 and Table 3Minimum Requirements NA 80 % of SolidDouglas-firPractices D 1183 “C”NA 80 % of SolidDouglas-firPractices D 1183 “C”344.7 kPA (50 psi)for 7 daysReference Section NA 10.1.1.2 NA 10.1.2.2 10.1.3Treatment Soak/Re-dry Soak/Re-dry Soak/Re-dry Soak/Re-dry Soak/Re-dryReference Secti
44、on 14.5.5 and Table 3 14.5.3 and Table 3 14.6.4 and Table 3 14.6.4 and Table 3 14.9.10 and Table 3Minimum Requirements NA 80 % of SolidDouglas-fir Soak/Re-dryNA 80 % of SolidDouglas-fir Soak/Re-dry344.7 kPa (50 psi)for 7 daysReference Section NA 10.1.1.3 NA 10.1.2.3 10.1.3Treatment NA Oxidation NA M
45、old (as required) Elevated TemperatureReference Section NA 14.5.6 and 14.7 NA 14.6.5 and 14.8 14.9.8 and Table 3Minimum Requirements NA 80 % of BondedDouglas-fir-ConditionedNA 90 % of BondedDouglas-fir-Conditioned344.7 kPa (50 psi)for 7 daysReference Section NA 10.1.1.4 NA 10.1.2.4 10.1.3Treatment N
46、A Mold (as required) NAReference Section NA 14.5.7 and 14.8 NAMinimum Requirements NA 90 % of BondedDouglas-fir-ConditionedNAReference Section NA 10.1.1.5 NATABLE 2 OSB to Core to OSB Qualification SeriesTest TypeShear(Test MethodC 273/C 273M)Tension(Test MethodC 297/C 297M)Specimen Type SIP SIPTrea
47、tment Conditioned ConditionedReference Section 15.1 15.2Minimum Requirement 62 kPa (9 psi) 103.4 kPa (15 psi)Reference Section 10.2.1 10.2.2D7446093Douglas-fir, Coast, Dry (12 % M.C.).10.1.2.2 Practices D 1183 Test Condition “C”After cy-cling the bonded Douglas-fir specimens in accordance withPracti
48、ces D 1183 Test Condition “C,” or the soak/re-dryaccelerated aging procedures (see Table 3), the minimumaverage tensile strength shall be equal to or greater than 80 %of the average tensile strength of solid Douglas-fir specimensexposed to the same accelerated aging procedure. Specimenpreparation of
49、 solid Douglas-fir specimens is detailed in 14.1,14.6, and Fig. 2.10.1.2.3 Soak/Re-dry TestAfter cycling the bondedDouglas-fir specimens in accordance with the soak/re-dryaccelerated aging procedures (see Table 3), the minimumaverage tensile strength shall be equal to or greater than 80 %of the average tensile strength of solid Douglas-fir specimensexposed to the same accelerated aging procedure. Specimenpreparation of solid Douglas-fir specimens is detailed in 14.1,14.6, and Fig. 2.TABLE 3 Douglas-fir ProceduresPractices D 1183Procedure CSoak/Re-dry Cre
