1、Designation: D 1455 87 (Reapproved 2008)Standard Test Method for60 Specular Gloss of Emulsion Floor Polish1This standard is issued under the fixed designation D 1455; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the 60specular gloss of films of emulsion floor polish after applica-tion to
3、 a substrate.NOTE 1Specular gloss is one of several related appearance attributesthat produce the sensation of glossiness. For this reason, specular glossmeasurements may not always correlate well with visual rankings ofglossiness.1.2 This standard does not purport to address all of thesafety concer
4、ns, 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:2D 523 Test Method for Specular GlossD 143
5、6 Test Methods for Application of Emulsion FloorPolishes to Substrates for Testing Purposes3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 specular glossthe ratio of reflected to incident light,times 1000, for specified apertures of illumination and recep-tion when the axis of
6、 reception coincides with the mirror imageof the axis of illumination.4. Significance and Use4.1 This test method may be used to evaluate the differencein gloss of dried films of emulsion floor polishes when the lightreflected at a 60 angle is measured. Extremely high- orlow-gloss polishes may not b
7、e differentiated at a 60 angle. A20 angle measured in accordance with Test Method D 523may give better definition of gloss.5. Apparatus5.1 GlossmeterThe instrument and the reference stan-dards shall conform to the requirements prescribed in TestMethod D 523, using an angle of reflection of 60.5.2 Fl
8、oor Polish ApplicatorThe equipment for applica-tion of the floor polish shall conform to the requirementsprescribed in Test Methods D 1436.6. Substrates6.1 Two standard substrates are commonly used; however,commercial types may be used to test specific applications.Better agreement of results can be
9、 expected when black glassis used as the substrate, except for those cases where thesample being tested produces a hazy film. Where a hazy film isproduced, black glass should not be employed as the substrate.The standard types are as follows:6.1.1 Black Glass,3,4having a highly polished plane surfac
10、ewith a refractive index of 1.567.6.1.2 Offcial Vinyl Composition Tile,4,5new and unused.7. Procedure7.1 Apply the floor polish to the substrate in accordancewith the procedures described in Test Methods D 1436.Method A, using the automatic dip coater, can be expected togive better agreement of resu
11、lts. For comparison of results, thesame method of application must be used.7.2 Determine the specular gloss at 60 in accordance withTest Method D 523.7.3 Determine the specular of gloss at 20 in accordancewith Test Method D 523 if the 60 gloss does not give gooddifferentiation between high-gloss sam
12、ples.8. Report8.1 The report shall include the following:1This test method is under the jurisdiction ofASTM Committee D21 on Polishesand is the direct responsibility of Subcommittee D21.04 on Performance Tests.Current edition approved March 1, 2008. Published April 2008. Originallyapproved in 1956.
13、Last previous edition approved in 2002 as D 1455 87(2002).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.3Th
14、e sole source of supply of black glass known to the committee at this timeis L. Perilstein Glass, 2543 Kensington Ave. Phila., PA 19125.4If you are aware of alternative suppliers, please provide this information toASTM Headquarters.Your comments will receive careful consideration at a meetingof the
15、responsible technical committee, which you may attend.5The sole source of supply of Official Vinyl Composition Tile known to thecommittee at this time is Chemical Specialties Manufacturers Assn., 1913 EyeStreet, N.W. Washington, DC 20006.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C
16、700, West Conshohocken, PA 19428-2959, United States.8.1.1 Average specular gloss reading at 60, and at 20 if a20 angle was used.8.1.2 Substrate used,8.1.3 Method of application of film,8.1.4 Number of coats applied,8.1.5 Presence of any specimen where portions of testsurface differ in gloss from av
17、erage by more than 5 % ofaverage,8.1.6 Name of manufacturer of gloss-meter and modeldesignation, and8.1.7 Identification of working standard or standards ofgloss used.9. Precision and Bias9.1 Readings obtained on the same instrument, using filmsdried on black glass, should be repeatable to within 2.
18、5 % ofthe magnitude of the readings. Readings obtained on differentinstruments should be reproducible to within 5 % of themagnitude of the readings.9.2 Results obtained may be uncertain due to the cumulativeeffect of several sources of error,6that is, difference betweenthe geometric distribution of
19、flux reflected from standards andspecimens may bring about uncertainties in the measuredgloss, even though the source and receiver apertures are withinthe tolerances specified. Inaccuracy of reading may result eventhough the precision of the measurement mechanism is heldwithin the tolerance specifie
20、d, and lens arrangement and strayreflections from the interior walls of the instrument may causeerrors in gloss readings.10. Keywords10.1 black glass; emulsion; floor polish; glossmeter; inci-dent light; OVCT; reflections; specular gloss; substrateASTM International takes no position respecting the
21、validity 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
22、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 should be addressed to ASTM International Head
23、quarters. 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 sta
24、ndard 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 s
25、erviceastm.org (e-mail); or through the ASTM website(www.astm.org).6For a discussion of these sources of error, see Hammond, III, H. K., andNimeroff, I., “Measurement of Sixty-Degree Specular Gloss,” Journal of Research,Nat. Bureau Standards, Vol 44, No. 6, June 1950, p. 585. (Research Paper RP 2105).A condensed version of this paper was published in the ASTM Bulletin, No. 169,October 1950, p. 54.D 1455 87 (2008)2
