1、Designation: D7446 09 (Reapproved 2017)Standard 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 D7446; the number immediately follo
2、wing the designation 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 specificatio
3、n is designed to 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
4、:1.2.1 Resistance 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 T
5、ensile and shear 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 adhesiveapplicat
6、ion and curing terminology are also usually includedfor classification purposes such as cold-setting phenolresorcinol, heat-cured phenol resorcinol, and hot melt onecomponent urethane.1.4 Evaluation of adhesive performance at high temperatureconditions, such as during a fire exposure, is beyond the
7、scopeof this specification.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 thi
8、s standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principl
9、es for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C273/C273M Test Method for Shear Properties of SandwichCore MaterialsC297/C297M Test Method for F
10、latwise Tensile Strength ofSandwich ConstructionsC578 Specification for Rigid, Cellular Polystyrene ThermalInsulationD572 Test Method for RubberDeterioration by Heat andOxygenD905 Test Method for Strength Properties of AdhesiveBonds in Shear by Compression LoadingD907 Terminology of AdhesivesD1183 P
11、ractices for Resistance of Adhesives to CyclicLaboratory Aging ConditionsD1583 Test Method for Hydrogen Ion Concentration of DryAdhesive FilmsD2294 Test Method for Creep Properties of Adhesives inShear by Tension Loading (Metal-to-Metal)D4300 Test Methods for Ability of Adhesive Films toSupport or R
12、esist the Growth of FungiD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Based MaterialsD4444 Test Method for Laboratory Standardization andCalibration of Hand-Held Moisture MetersE4 Practices for Force Verification of Testing Machines1This specification is under the jur
13、isdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.70 on ConstructionAdhesives.Current edition approved April 1, 2017. Published May 2017. Originallyapproved in 2009. Last previous edition approved in 2009 as D7446 09. DOI:10.1520/D7446-09R17.2For refere
14、nced 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
15、onshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade
16、 Organization Technical Barriers to Trade (TBT) Committee.12.2 Other Standards:PS2 Performance Standard for Wood-Based Structural-UsePanels3ISO 17025 General Requirements for the Competence ofTesting and Calibration Laboratories43. Terminology3.1 DefinitionsMany terms in this specification are de-fi
17、ned in Terminology D907.3.2 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) that co
18、nforms to Speci-fication C578.3.2.2 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 board i
19、s comprised pri-marily of wood strands bonded with exterior adhesive formu-lations under heat and pressure. Design capacities are refer-enced to the primary and secondary structural axis, whichtypically correspond to the manufacturing machine and cross-machine directions, respectively. The primary d
20、irection 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 s
21、tructural 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 stra
22、nd 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, chemica
23、l 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-i
24、ty 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 Extenders5.1
25、 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 D4300. The adhesive manufacturersl
26、iterature 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 C297/C297M, C273/C273M, and D905 and have anaccuracy of 61 % when calibrated in accordance with Prac-tice
27、s E4 requirements. The grips shall be capable of securelygrabbing the specimen throughout the test without allowing thespecimen 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) and the
28、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 MethodD1583.8. Physical Requirements8.1 Adhesive manufacturer recommendations forpreparation, application, and handling of the SIP adhesive sh
29、allensure proper usage and maintain product integrity. Theadhesive manufacturer shall furnish written instructions statingthe general chemical type of adhesive, its storage and mixingprocedure, the method of surface preparation with materials tobe laminated, and any other data that is pertinent to t
30、he 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 the limitin
31、gconditions.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 that must
32、 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 content and t
33、emperature for fac-ings and core materials;3Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http:/www.nist.gov.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http
34、:/www.ansi.org.D7446 09 (2017)28.3.4 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;8.3.9 Laminating pressure
35、 and press time;8.3.10 Curing conditions such as time, temperature, andhumidity.9. Qualification Tests9.1 Douglas-fir to Douglas-fir Qualification 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 D905 Block
36、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 % 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
37、ofthe 1999 Wood Handbook for Douglas-fir.510.1.1.2 Practices D1183 Test Condition “C”After cy-cling bonded Douglas-fir specimens in accordance with Prac-tices D1183 “C” procedure (see Table 3), the average shearstrength shall be equal to or greater than 80 % of the averageshear strength of solid Dou
38、glas-fir specimens exposed to thesame accelerated aging procedure. Preparation details for solidDouglas-fir specimens are located in 14.1, 14.5, 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 stren
39、gth shall be equal to or greaterthan 80 % of the average shear strength of solid Douglas-firspecimens exposed to the same accelerated aging procedure.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 bond
40、edDouglas-fir specimens in accordance with procedures indicatedin 14.7 the average shear strength shall be equal to or greaterthan 80 % of the 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 bonde
41、d 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 strength of thebonded Douglas-fir specimens tested in 10.1.1.1.5Available from U. S. Department of Agriculture, Forest Products Laboratory,One Gifford Pinchot
42、 Drive Madison, WI 53726, http:/www.fpl.fs.fed.us.TABLE 1 Douglas-fir to Douglas-fir Qualification SeriesTest TypeShear(Test Method D905)Tension(Test Method C297/C297M)Creep(Test Method D2294)Specimen Type Solid Douglas-fir Bonded Douglas-fir Solid Douglas-fir Bonded Douglas-fir Bonded Douglas-firTr
43、eatment NA Dry Shear NA Dry Tensile UncontrolledReference Section NA 14.5 NA 14.6 14.9.7 and Table 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 D1183 “C” Practices D1183 “C” Practic
44、es D1183 “C” Practices D1183 “C” Practices D1183 “C”Reference Section 14.5.4 14.5.3 14.6.3 14.6.3 14.9.9 and Table 3Minimum Requirements NA 80 % of SolidDouglas-firPractices D1183 “C”NA 80 % of SolidDouglas-firPractices D1183 “C”344.7 kPA (50 psi)for 7 daysReference Section NA 10.1.1.2 NA 10.1.2.2 1
45、0.1.3Treatment Soak/Re-dry Soak/Re-dry Soak/Re-dry Soak/Re-dry Soak/Re-dryReference Section 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
46、psi)for 7 daysReference Section NA 10.1.1.3 NA 10.1.2.3 10.1.3Treatment NA Oxidation NA Mold (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-Condition
47、ed344.7 kPa (50 psi)for 7 daysReference Section NA 10.1.1.4 NA 10.1.2.4 10.1.3Treatment NA 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 Ty
48、peShear(Test MethodC273/C273M)Tension(Test MethodC297/C297M)Specimen Type SIP SIPTreatment Conditioned ConditionedReference Section 15.1 15.2Minimum Requirement 62 kPa (9 psi) 103.4 kPa (15 psi)Reference Section 10.2.1 10.2.2D7446 09 (2017)310.1.2 Douglas-fir to Douglas-fir Tensile Strength:10.1.2.1
49、 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 based on 90 % of the Wood HandbookTable 4-2,5Tension, perpendicular to grain-maximum tensile strength forDouglas-fir, Coast, Dry (12 % M.C.).10.1.2.2 Practices D1183 Test Condition “C”After cy-cling the bonded Douglas-fir specimens in accordance withPractices D1183 Test Condition “C,” or the soak/re-dry accel-erated aging procedures (see Table 3), the minimum averagetensile str
