ASTM D899-2000(2013) Standard Practice for Applied Weight Per Unit Area of Liquid Adhesive《单位面积涂用液体胶粘剂重量的标准实施规程》.pdf

1、Designation: D899 00 (Reapproved 2013)Standard Practice forApplied Weight Per Unit Area of Liquid Adhesive1This standard is issued under the fixed designation D899; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r

2、evision. 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 practice provides a procedure for the

3、estimation ofthe quantity of liquid adhesive applied in a spreading or coatingoperation.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, associ

4、ated 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 Adhesives3. Terminology3.1 DefinitionsS

5、everal terms in this practice are defined inaccordance with Terminology D907.3.2 Definitions of Terms Specific to This Standard:3.2.1 spreading or coating weight per unit area, nthe totalquantity of liquid adhesive uniformly applied, expressed inpounds per thousand square feet of joint or surface ar

6、ea. (Seespread in Terminology D907.)3.2.2 test specimen, nthe material that is to be coated withadhesive. (See adherend in Terminology D907).3.2.3 total quantity of liquid adhesive appliedthe weightof the adhesive on the test specimen as applied on the surfaceor at the glue joint, whether resulting

7、from a single spread, adouble spread, or multiple applications.4. Significance and Use4.1 For the bonding of adherends, the amount of adhesivepresent is critical and it is important to understand that thispractice does not ensure sufficient adhesive is present on theadherend surface.4.2 This practic

8、e can be used to supplement industry usessuch as that of visually checking the spread or the use ofmil-thickness gages.4.3 In laboratory and industrial operations, hand or me-chanical application of adhesives can be duplicated for costsavings using this practice.5. Apparatus5.1 The following apparat

9、us is required for this practice:5.1.1 A balance, capable of weighing the material accu-rately to the nearest 1 %, and5.1.2 A suitable instrument for measuring the linear dimen-sions of the specimens to the nearest 1 %.6. Test Specimens6.1 Select test specimens from portions of the actual mate-rial

10、to be coated or spread, or from the same lot or a similarone, having the same physical characteristics such as thickness,density, or texture.6.2 The size of the specimen may vary with the nature of thesubstrate.NOTE 1Materials of low porosity normally require larger test speci-mens than materials of

11、 high porosity.6.3 Use simple geometric shapes for the test specimens tofacilitate precise measurement of dimensions.6.4 For operations involving the coating or spreading ofsheeted stock, individual plies or lamina of the adherend, aminimum of 5 test specimens is required for determining theaverage

12、weight of liquid adhesive applied.6.5 For operations where the test specimen is in continuousform, such as roll stock of paper or fabric, use a test specimensufficient in size to reflect accurately the average spreading orcoating weight of liquid adhesive.1This practice is under the jurisdiction of

13、ASTM Committee D14 on Adhesivesand is the direct responsibility of Subcommittee D14.10 on Working PropertiesCurrent edition approved Oct. 1, 2013. Published October 2013. Originallyapproved in 1947. Last previous edition approved in 2007 as D899 00 (2007).DOI: 10.1520/D0899-00R13.2For referenced AST

14、M 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 Conshohoc

15、ken, PA 19428-2959. United States17. Conditioning7.1 Prior to the application of the adhesive, bring the testspecimens to equilibrium with the atmospheric conditionsprevailing under actual or contemplated operational use.8. Procedure8.1 Determine the linear dimensions of the test specimensand calcul

16、ate their areas to an accuracy of 1 %. Determine theweight of the test specimens to the nearest 1 %.8.2 Apply the adhesive to the test specimens in accordancewith the procedure recommended by the manufacturer, andreweigh the specimens immediately.8.3 Use only test specimens reflecting a normal unifo

17、rmapplication of adhesive (by visual inspection) in calculating theweight of liquid adhesive applied.9. Calculation9.1 Calculate the weight of liquid adhesive applied asfollows:When W2and W1are expressed in grams:S 5 W22 W1! 3317.5#/N 3 A! (1)When W2and W1are expressed in ounces:S 5 W22 W1! 39000#/N

18、 3 A! (2)where:S = weight of liquid adhesive applied, expressed in poundsper thousand square feet of joint or surface area,W2= weight of specimen immediately after application ofthe adhesive,W1= weight of specimen before applying the adhesive,A = area of test specimen in square inches, andN = number

19、 of surfaces spread.NOTE 2For bonding operations where both contacting surfaces of thejoint are spread with adhesive, the formulas above should be used for eachsurface spread and the combined weight shall equal the total weight ofadhesive applied.10. Report10.1 Report the following information:10.1.

20、1 Complete identification of the adhesive applied,10.1.2 Method of applying adhesive,10.1.3 Complete description of the adherend test specimens(composition or type, moisture content, size, source, etc.)10.1.4 Number of test specimens used (or total area of testspecimens if from a continuous operatio

21、n) and calculatedweight of adhesive applied to each specimen,10.1.5 The average calculated weight of the liquid adhesiveapplied per thousand square feet of surface of joint area, and10.1.6 Any qualifying remarks concerning the test proce-dure.11. Keywords11.1 coating weight; spread weightASTM Intern

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23、heir own responsibility.This standard is subject to revision at any time by the responsible technical 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 shoul

24、d be addressed to ASTM International Headquarters. Your comments will receive careful consideration 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 Stand

25、ards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor 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/).D899 00 (2013)2