ASTM_D_1583_-_01_2013.pdf

Designation:D158301(Reapproved 2013)Standard Test Method forHydrogen Ion Concentration of Dry Adhesive Films1This standard is issued under the fixed designation D1583;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 This test method covers determination of the hydrogenion concentration(pH),acidity,or alkalinity,of organic adhe-sives in the cured dry film form.This test method is notdesigned to apply to pressure-sensitive adhesives.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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.2.Referenced Documents2.1 ASTM Standards:2D907 Terminology of AdhesivesE70 Test Method for pH of Aqueous Solutions With theGlass Electrode3.Terminology3.1 DefinitionsMany of the terms in this test method aredefined in Terminology D907.4.Summary of Test Method4.1 Collect samples of the adhesive to be tested with anyhardener necessary.4.2 Dry adhesive films are prepared.4.3 The adhesive films are ground and mixed with distilledwater.4.4 The pH is determined using a pH meter in accordancewith Test Method E70.5.Significance and Use5.1 The pH of an adhesive may be a factor whereby theadherends or the adhesive itself may be adversely affected intime by the acidity or alkalinity.6.Apparatus6.1 pH Meter,capable of making measurements to 60.05pH.6.2 Glass Vial,capable of properly immersing the electrodeof the pH meter when filled with the specified test solution.6.3 Distilled Water,with a pH between 5.6 and 7.0 at 23 61C(73.4 6 1.8F).6.4 Glass Sheet,free from scratches,approximately 200 by250 mm(8 by 10 in.)in size for use in oven.6.5 Circulating-Air Oven,capable of maintaining tempera-tures of 23 6 1C(73.4 6 1.8F)to 150 6 1C(302 6 1.8F).7.Sampling7.1 Except in special cases,take a composite sample whenpossible from three or more separate containers,chosen atrandom.Also take samples from containers which appear to benonrepresentative,and test such samples separately.Place thesamples immediately in airtight glass containers filled toprevent excessive air space above the adhesive and transportthem to the testing laboratory in these containers.Takeprecautions to reduce evaporation or drying to a minimum.Thoroughly mix the adhesive in the container if there is atendency for the materials to separate before a sample is taken.Use the required catalysts and hardeners from the sameshipment as the other adhesive components if the componentsare furnished as a unit by the adhesive manufacturer.8.Test Specimens8.1 Room-Temperature Setting AdhesivesUse adhesivesthat form dry films at room temperature and mix in accordancewith the recommendations of the adhesive manufacturer.Spread the adhesive on glass or other inert material to which1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.30 on WoodAdhesivesCurrent edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1958.Last previous edition approved in 2008 as D1583 01(2008).DOI:10.1520/D1583-01R13.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the adhesive does not adhere to a film thickness of less than0.51 mm(0.020 in.)and allow it to dry at 23 6 1C(73.4 61.8F).8.2 Elevated-Temperature Setting AdhesivesMix adhe-sives that require heat to form a dry film in accordance with therecommendations of the manufacturer.Prepare a film of theadhesive on glass or other inert material to which the adhesivedoes not adhere,and cure it in accordance with the recommen-dations of the manufacturer.The adhesive film should be lessthan 0.51 mm(0.020 in.)in thickness.In the absence ofspecific recommendations for curing the adhesive,place thefilms on the glass plates in a circulating-air oven at 66 6 1C(1506 1.8F)until most of the solvent is evaporated;thisusually requires 4 h.Then raise the temperature to 150 6 1C(302 6 1.8F)and continue to heat the films until cured.Thisprocess usually requires less than 1 h.8.3 Grind the adhesive specimen so that all the particlespass through a No.40(425-m)sieve.8.4 Test at least three specimens from each sample.9.Proced