ASTM_D_4690_-_12.pdf

Designation:D469012Standard Specification forUrea-Formaldehyde Resin Adhesives1This standard is issued under the fixed designation D4690;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 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 Department of Defense.1.Scope1.1 Thisspecificationcoversthreetypesofurea-formaldehyde thermosetting resin adhesives suitable for use onwood,wood-based substrates,or plastic laminates.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forinformation only.1.3 The requirements for the adhesive are based on tests ofphysical properties including viscosity,density,nonvolatilecontent,pH,insoluble matter,amylaceous matter,mixingproperties,working life,and on strength properties,includingdry shear strength in lumber-type joints,dry and wet shearstrength in plywood-type joints,and all strength tests at the endof the storage life certified by the manufacturer.1.4 The following safety hazards caveat pertains only to thetest method portion,Sections 8 through 11,of this specifica-tion:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B417 Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney FunnelD905 Test Method for Strength Properties of AdhesiveBonds in Shear by Compression LoadingD906 Test Method for Strength Properties of Adhesives inPlywood Type Construction in Shear by Tension LoadingD907 Terminology of AdhesivesD1084 Test Methods for Viscosity of AdhesivesD1489 Test Method for Nonvolatile Content of AqueousAdhesivesD1490 Test Method for Nonvolatile Content of Urea-Formaldehyde Resin SolutionsD1583 Test Method for Hydrogen Ion Concentration of DryAdhesive FilmsD1875 Test Method for Density of Adhesives in Fluid FormD2556 Test Method for Apparent Viscosity of AdhesivesHaving Shear-Rate-Dependent Flow PropertiesD5266 Practice for Estimating the Percentage of WoodFailure in Adhesive Bonded JointsE70 Test Method for pH of Aqueous Solutions With theGlass ElectrodeE104 Practice for Maintaining Constant Relative Humidityby Means of Aqueous Solutions2.2 Federal Specifications:3PPP-C-96 Cans,Metal,28 Gage and LighterPPP-D-723 Drums,FiberPPP-D-729 Drums,Shipping and Storage,Steel,55-gal(208-L)2.3 Federal Standard:3FED-STD-123 Marking for Shipment2.4 Military Standard:3MIL-STD-129 Marking for Shipment and Storage3.Terminology3.1 DefinitionsMany terms in this specification are de-fined in Terminology D907.3.2 Definitions of Terms Specific to This Standard:3.2.1 lotadhesive manufactured at one place from thesame batch or blends of raw materials subjected to the sameoperations and conditions.NOTE1In this specification,the maple block lamination in TestMethod D905 and the birch plywood construction in Test Method D906are described as assemblies.1This specification is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.30 on WoodAdhesives.Current edition approved Oct.1,2012.Published October 2012.Originallyapproved in 1987.Last previous edition approved in 2005 as D4690 99(2005).DOI:10.1520/D4690-12.This specification is intended as a replacement for Federal SpecificationMMM-A-188c,Adhesive;Urea Resin Type(Liquid and Powder).2For referenced 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.3Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 This specification provides testing procedures and speci-fies requirements to differentiate between the physical andadhesive bonding properties of the many commercial urea-formaldehyde thermosetting resin and catalyst systems.4.2 Because of the diverse nature of products bonded withthese adhesives,testing by this specification will only evaluatethe adhesive under a given set of conditions.The physicalproperties of the adhesive are measured to provide informationon certain handling and working properties.The adhesive-bonding properties are measured on maple block and birchplywood specimens,prepared and tested in accordance withTest Method D905 and Test Method D906,respectively.Thecertification requirements have been ba