1、Designation:D468912Standard Specification forAdhesive,Casein-Type1This standard is issued under the fixed designation D4689;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 t
2、he 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 This specification covers casein and other protein-blendadhesives for use adhering wood to
3、wood.The adhesive typecovered by this specification is a dry powder or granularproduct comprising a mixture of casein,or casein and otherprotein source,with the necessary dry chemicals to effectsolution when the mixture is added to water.NOTE1Although the term casein adhesive is used throughout this
4、specification,historically,the adhesive subclass described in 1.1 has beenknown as casein glue.See Terminology D907,adhesive types.1.2 LimitationsCooked casein adhesives are not coveredby this specification.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in p
5、arentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The following safety hazards caveat pertains only to thetest method portion,Sections 8 through 13,of this specifica-tion:This standard does not purport to address all of the s
6、afetyconcerns,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:2D899 Practice for Applied Weight Per U
7、nit Area of LiquidAdhesiveD905 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 AdhesivesD2
8、556 Test Method for Apparent Viscosity of AdhesivesHaving Shear-Rate-Dependent Flow PropertiesD5266 Practice for Estimating the Percentage of WoodFailure in Adhesive Bonded JointsE104 Practice for Maintaining Constant Relative Humidityby Means of Aqueous Solutions2.2 Other Standards:3MIL-STD-129 Mar
9、king for Shipment and StorageFED-STD-123 Marking for ShipmentPPP-C-96 Cans,Metal,28 Gage and LighterPPP-D-723 Drums,FiberPPP-D-729 Drums,Shipping and Storage,Steel,55 Gal(208 L)3.Terminology3.1 DefinitionsMany terms in this specification are de-fined in Terminology D907.3.2 Definitions of Terms Spec
10、ific to This Standard:3.2.1 lot,nadhesive manufactured at one place from thesame batch or blends of raw materials subjected to the sameoperation and conditions.NOTE2In this specification,the maple block lamination in TestMethod D905 and the birch plywood construction in Test Method D906are described
11、 as assemblies.4.Significance and Use4.1 This specification provides testing procedures and speci-fies requirements to differentiate the physical,adhesive,anddurability properties of commercially available casein andcasein-protein adhesives.The two classes are defined by waterresistance.Selection of
12、 class is left to the choice of the productmanufacturer and the consumer,based on measures used byeach to protect the bond line from moisture degradation.1This specification is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.30 on WoodAdh
13、esives.Current edition approved Oct.1,2012.Published October 2012.Originallyapproved in 1987.Last previous edition approved in 2005 as D4689 99(2005).DOI:10.1520/D4689-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual
14、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,P
15、O Box C700,West Conshohocken,PA 19428-2959.United States1 NOTE3Because of strict EPA requirements as to disposal of wastefrom manufacturing and production facilities,most if not all biocides wereremoved from casein adhesives.Paint,varnish,and restrictive exposureconditions are protective measures co
16、mmonly employed now to protectthe bond line against degradation due to mold and moisture.4.2 The stress calculated by this specification should not beused to predict failure,nor should it be used directly for designstress in joints with different geometry or with loading direc-tion different from the test geometry.5.Classification5.1 For purposes of this specification,adhesives are classi-fied on the basis of water resistance at two performance levels:5.1.1 Class B,Water ResistantAn adhesive pas
