1、Designation: D1583 01 (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
2、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
3、 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 info
4、rmationonly.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.
5、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
6、 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
7、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
8、 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,
9、 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
10、 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 hardene
11、rs 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 ma
12、nufacturer.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. Originallyappro
13、ved 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 Docume
14、nt Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1the 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 S
15、etting 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.
16、 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
17、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. Procedure9.1 Immediately a
18、fter grinding, weigh2goramultiplethereof of the ground particles, and place them in a smallstandard-size glass vial that will permit adequate immersion ofthe electrode when the 10 mL, or a multiple thereof, of freshlyboiled, cooled distilled water is added. Maintain the ratio ofpowder to water at 1
19、to 5. Stir the mixture thoroughly. Tightlyseal the container with a rubber stopper at all times exceptwhen pH determinations are being made. Allow the suspensionof ground particles to stand for 72 h at room temperature. Thenstir the solution and determine the pH by means of a suitablepH meter. Stand
20、ardize the pH meter in accordance with theinstructions of the manufacturer of the instrument or, in theabsence of such instructions, in accordance with Test MethodE70. Repeat the determination at intervals of 24 h thereafteruntil the difference between consecutive readings is not greaterthan 0.05 pH
21、 units. Record the last readings as the equilibriumfilm pH value of the adhesive.9.2 Measure the pH at 23 6 1C (73.4 6 1.8F).10. Report10.1 Report the following information:10.1.1 Complete identification of the adhesive tested includ-ing type, catalyst, hardener, source, lot number, condition, andso
22、 forth,10.1.2 The pH of the distilled water used, and10.1.3 The pH and the time required to reach equilibrium ofeach test specimen.11. Precision and Bias11.1 The standard deviation of the average (based on threespecimens) obtained by the same analyst on different days wasestimated to be 0.02 pH unit
23、 relative at 53 df. Two suchaverages should be considered suspect (95 % confidence level)if they differ by more than 0.06 pH unit.11.2 Reproducibility (Multilaboratory)The standard de-viation of results (each the average of duplicate determina-tions) obtained by analysts in different laboratories ha
24、s beenestimated to be 0.04 pH unit at 12 df. Two such averagesshould be considered suspect (95 % confidence level) if theydiffer by more than 0.12 pH unit.12. Keywords12.1 adhesive films; pHASTM International takes no position respecting the validity of any patent rights asserted in connection with
25、any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technic
26、al committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration
27、 at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbo
28、r Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D1583 01 (2013)2
