ASTM_D_7770_-_12.pdf

Designation:D777012Standard Test Method forCollection of Volatile Organic Compounds Emitted DuringSimulated Manufacturing of Engineered Wood Products Viaa Sealed Caul Plate Method1This standard is issued under the fixed designation D7770;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.1.Scope1.1 This test method provides a method for the collection ofvolatile organic compounds(VOC)that are emitted during themanufacture of engineered wood products using a laboratoryenvironment designed to simulate a defined production pro-cess.The method is used for the determination of the amountsof methanol,formaldehyde,phenol and other VOC that may beemitted during conditions designed to simulate production suchas hot pressing,the conditions of hot stacking and cool-down that occurs post-press.1.2 The test method was originally developed to measurecertain VOC from exterior plywood meeting Voluntary ProductStandard PS 109 and structural composite lumber productssuch as laminated veneer lumber(LVL)meeting SpecificationD5456.Both of these product types are typically manufacturedusing phenol-formaldehyde resin based adhesives that meetSpecification D2559.1.3 The test method is suitable for many types of woodproducts bonded with adhesives.1.4 This test method is specific for collecting VOC duringsimulated production of wood products and is not designed todetermine general organic emissions from all indoor materialsor sources.1.5 The values stated in SI units are to be regarded asstandard.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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Some specifichazards statements are given in Section 7 on Hazards.2.Referenced Documents2.1 ASTM Standards:2D2145 Method of Test for Phenol Content of Phenol-WaterMixtures(Withdrawn 1978)3D2559 Specification for Adhesives for Bonded StructuralWood Products for Use Under Exterior Exposure Condi-tionsD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Based MaterialsD4933 Guide for Moisture Conditioning of Wood andWood-Based MaterialsD5456 Specification for Evaluation of Structural CompositeLumber ProductsE346 Test Methods for Analysis of MethanolE1333 Test Method for Determining Formaldehyde Concen-trations in Air and Emission Rates from Wood ProductsUsing a Large Chamber2.2 Other Standards:Voluntary Product Standard PS 109 Structural Plywood3.Terminology3.1 Definitions:3.1.1 target production processa set of specified manufac-turing parameters that define the production of an adhesivebonded wood product.For the purposes of this standard,thoseparameters are designed to be representative of a specificproduction facility and are used to derive the test specimen.3.1.2 test specimena combination of defined wood ele-ments with or without applied adhesive that is exposed topressing and post pressing conditions in a defined laboratorysetting that is designed to simulate the Target ProductionProcess(see 3.1.1).3.1.3 VOCfor the purposes of this standard,the term VOCmeansthespecificvolatileorganiccompoundsof1This test method is under the jurisdiction of ASTM Committee D07 on Woodand is the direct responsibility of Subcommittee D07.03 on Panel Products.Current edition approved Nov.1,2012.Published December 2012.DOI:10.1520/D7770-122For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 formaldehyde,methanol and phenol that are emitted from a testspecimen during the pressing and post pressing measurements.4.Summary of Test Method4.1 A laboratory scale press is used to simulate the targetproduction process with respect to the key variables thatinfluence the production process and that may affect theemission of VOC.The lab press is fitted with a caul system tocreate a seal around the press system to permit collection of theVOC discharged during the process.The sealed caul platecontains inlet and outlet ports to permit the controlled collec-tion of the emitted VOC.4.2 During the test,emitted VOC collect in the air spaceencompassed within the sealed caul plate.The VOC arecollected by mixing them into a continuous flow of clean,dryair that is injected into the sealed space via a controlled,pressurize