ASTM D1875-2003 Standard Test Method for Density of Adhesives in Fluid Form《液态胶粘剂密度的标准试验方法》.pdf

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1、Designation: D 1875 03Standard Test Method forDensity of Adhesives in Fluid Form1This standard is issued under the fixed designation D 1875; 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 par

2、entheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 the measurement of density(weight per gall

3、on) of adhesives, and components thereof,when in liquid form.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 th

4、eresponsibility 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:D 907 Terminology of Adhesives2E 1 Specification for ASTM Thermometers3E 691 Practice f

5、or Conducting an Interlaboratory Study toDetermine the Precision of a Test Method43. Terminology3.1 DefinitionsMany terms in this test method are definedin Terminology D 907.3.2 Definitions of Terms Specific to This Standard:3.2.1 densitythe mass (weight in vacuum) of a unitvolume of the liquid at a

6、ny given temperature expressed as theweight in pounds avoirdupois, of a U.S. gallon measure of theliquid at 25C, unless otherwise specified.4. Significance and Use4.1 This test method is particularly applicable where thefluid has too high a viscosity or where a component is toovolatile for a specifi

7、c gravity balance determination.5. Apparatus5.1 Weight-Per-Gallon CupA weight-per-gallon cup5ofplated brass or stainless steel with counterbalance is recom-mended. The capacity of this cup with cover is exactly 83.2 mL(2.81 fl oz) at 25C (77F).NOTE 1The use of cups that are factory calibrated elimin

8、ates the needfor further calibration. These cups are calibrated with distilled water sothat their proper net weight is obtained at 25C. A temperature of 25C istherefore recommended when using these cups. Volume expansion of bothcup and the material to be measured causes erroneous results, if the mat

9、terof temperature is not standardized. However, where less accuracy isrequired, consideration of temperature differentials may be ignored.5.2 ThermometerASTM Saybolt Viscosity Thermometerhaving a range from 19 to 27C (66 to 80.5F) and conformingto the requirements for Thermometer 17C as prescribed i

10、nSpecification E 1.5.3 Constant-Temperature Bath, capable of maintaining atemperature of 25 6 0.1C (77 6 0.5F).5.4 Laboratory Balance, 200 g (0.44 lb) or greater capacity,accurate to 60.1 g (0.0002 lb).NOTE 2A hanging pan, triple-beam balance, or overhead-beam typeof balance with scales graduated to

11、 0.1 g has been found to provide results,the mean of which was consistent with the over all precision and accuracyof this test method.NOTE 3Fingerprints and smudges on the cup changes the weight andis to be avoided. Handle only with tongs and with hands protected byclean, dry, absorbent material.1Th

12、is test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.10 on WorkingProperties.Current edition approved Aug. 10, 2003. Published September 2003. Originallyapproved in 1961. Last previous edition approved in 1995 as D 1875 95.2A

13、nnual Book of ASTM Standards, Vol 15.06.3Annual Book of ASTM Standards, Vol 14.03.4Annual Book of ASTM Standards, Vol 14.02.5Weight-per-gallon cups may be obtained from the Paul N. Gardner Co.,Pompano Beach, FL.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA

14、19428-2959, United States.6. Sampling6.1 Take representative samples of the lot to be evaluatedfrom three or more separate containers, chosen at random. Donot take samples from containers that appear to be nonrepre-sentative. Place the samples in airtight containers, filled toprevent excessive air s

15、pace above the adhesive, and stored atroom temperature to reduce evaporation or drying to a mini-mum. Ensure that the adhesive in the container is thoroughlymixed if there is a tendency for the materials to separate.7. Procedure7.1 Test three portions of each sample.7.2 Clean and dry the cup with no

16、nresidual solvents.7.3 Fill the cup with the adhesive at a temperature below25C. Force down the cap for the cup to the extent of its travel,leaving the overflow orifice open. Immediately remove anyexcess overflow of adhesive from the cup by a suitable volatilesolvent. Avoid air bubbles occluded with

17、in the cup.7.4 Bring the cup and contents to the specified temperature,25C. Use the constant-temperature bath or room if necessary.This may be expected to cause further slight flow of adhesivefrom the overflow orifice due to expansion of the adhesive withthe rise of temperature.7.5 Remove the excess

18、 overflow by carefully wiping with asuitable solvent on an absorbent material. Dry the outside ofthe cup, if necessary, by wiping with the absorbent material.Do not remove overflow that occurs subsequent to the firstwiping after attainment of the desired temperature. Weigh thefilled cup immediately

19、to the nearest 0.1 g using the counter-balance for the cup.8. Calculation8.1 If the regular weight-per-gallon cup with capacity of83.2 mL is used, the weight in grams of the contents, dividedby 10, is the weight per gallon in pounds, or calculate thedensity in pounds per gallon as follows:D 5 WKwher

20、e:D = density, lb/gal,W = weight of contents, g, (8.3455)/V = constant for cup atcalibration temperature (Note 4), orK = 0.1003065 for cup with 83.2-mL capacity at 25C (Kconsidered as = 0.1, unless greater accuracy is de-sired), andV = volume of cup, mL.NOTE 4The numerator of K, 8.3455, is calculate

21、d from the volume-weight relationship as follows:2.540033 231.00!/453.59 5 8.3455where:2.5400 = conversion factor for centimetres to inches231.00 = conversion for cubic inches to gallons, and453.59 = conversion factor for grams to pounds.9. Report9.1 Report the following information:9.1.1 Complete i

22、dentification of the adhesive tested, includ-ing type, source, manufacturers code number, lot or batchnumber, condition, and date.9.1.2 Number of containers received and number sampled.9.1.3 Number of samples tested, and9.1.4 Average density to the third decimal in pounds pergallon at the specified

23、temperature (for example, D = X.XXXlb/gal at 25C), and the maximum and minimum values.10. Precision and Bias10.1 The number of laboratories, materials, and determina-tions in this study DOES NOT meet the minimum require-ments for determining precision prescribed in Practice E 691:PRACTICE E 691 STUD

24、Y MINIMUMLaboratories 1 6Materials 3 4Determinations 10 210.1.1 Precision statement for test method: wt per volPrecision, characterized by repeatability, Sr, r, and reproduc-ibility, SR, R has been determined for the materials to be:Materials Average Sr SR r RA 10.83 0.01 0.01 0.03 0.03B 10.81 0.02

25、0.02 0.04 0.04C 10.81 0.01 0.01 0.02 0.0210.1.2 This precision statement is provisional. Within fiveyears, additional data will be obtained and processed whichdoes meet the requirements of Practice E 691.11. Keywords11.1 density; weight-per-gallonASTM International takes no position respecting the v

26、alidity of any patent rights asserted in connection with 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 s

27、ubject 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 should be addressed to ASTM International Headq

28、uarters. 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 Standards, at the address shown below.This stan

29、dard 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).D1875032