1、Designation: D6053 08D6053 14 An American National StandardStandard Test Method forDetermination of Volatile Organic Compound (VOC) Contentof Electrical Insulating Varnishes1This standard is issued under the fixed designation D6053; the number immediately following the designation indicates the year
2、 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.1. Scope*1.1 This test method covers the determination of the amount
3、 of volatile organic compounds emitted during cure of electricalinsulating varnishes.1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversionsto inch-pound units that are provided for information only and are not considered standar
4、d.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use. See Section 7
5、for specific precautions.2. Referenced Documents2.1 ASTM Standards:2D115 Test Methods for Testing Solvent Containing Varnishes Used for Electrical InsulationD1711 Terminology Relating to Electrical InsulationD3960 Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related
6、 CoatingsD4733 Test Methods for Solventless Electrical Insulating VarnishesD5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical InsulationE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method3. Terminology3.1 Definitions
7、of Terms Specific to This Standard:3.1.1 varnish, electrical insulating, n a liquid resin system that is applied to and cured on electrical components providingelectrical, mechanical, and environmental protection.3.1.1.1 DiscussionThere are two types of electrical insulating varnish: solvent-contain
8、ing and solventless. The solvent-containing varnish is asolution, dispersion, or emulsion of a polymer or mixture of polymers in a volatile, nonreactable liquid. The solventless type isa liquid resin system free of volatile, nonreactable solvents.3.1.2 For definitions of other terms pertaining to th
9、is test method, refer to Terminology D1711.4. Significance and Use4.1 This test method determines the volatile organic content of an electrical insulating varnish. It utilizes a procedure wheredishes containing a known amount of varnish are baked and the amount of volatile organic compound is measur
10、ed. Calculationsare performed to express this in g/L or lb/gal. This test method is applicable to all types of varnishes. However, waterbornevarnishes while baked under the same conditions need to have water content determined and calculations performed in accordancewith Practice D3960.1 This standa
11、rd is under the jurisdiction ofASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subcommittee D09.01on Electrical Insulating Varnishes, Powders and Encapsulating Compounds.Current edition approved May 1, 2008May 15, 2014. Published June 2008May
12、2014. Originally approved in 1996. Last previous edition approved in 20032008 asD6053 - 03.D6053 - 08. DOI: 10.1520/D6053-08.10.1520/D6053-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. ForAnnual Book ofASTM Standardsvolume
13、 information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequat
14、ely depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM Int
15、ernational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.1 During the cure of electrical insulating varnishes some organic material is volatilized. A determination of the amount thatis volatilized is useful for estimating the amount of cured varnish on elec
16、trical units and volatile organic emissions from amanufacturing facility.5. Interferences5.1 The amount of volatile organic content determined by this test method is known to be affected by the rate of air exchangein the baking oven.6. Apparatus6.1 Weighing Dishes, aluminum, approximately 60 mm (238
17、 in.) in diameter and 15 mm (58 in.) high on the sides.6.2 Forced-Convection Oven, see Specification D5423-Type II.6.3 Desiccator.7. Hazards7.1 WarningDo not use varnish at temperatures above the flash point when inadequate ventilation, and the possibility offlames or sparks exist. Store varnish in
18、sealed containers.8. Procedure8.1 Weigh three aluminum dishes to the nearest 0.01 g.8.2 Add approximately 2 to 10 g of the varnish to be tested to each dish. Each dish needs to contain approximately the sameamount of varnish.8.3 Weigh each dish and varnish to the nearest 0.01 g.8.4 Roll the resin ar
19、ound in the dishes to ensure an even coating.8.5 Place the dishes in a forced-convection oven at 150 6 2 C. Other temperatures are permitted to be used when agreed toby interested parties.8.6 After 61 6 1 min remove the dishes from the oven. Other times are permitted to be used when agreed to by int
20、erestedparties.8.7 Cool in desiccator.8.8 Weigh each dish to the nearest 0.01 g.8.9 Calculate the volatile organic compound (VOC) content for each dish as follows except for waterborne varnishes. Forwaterborne varnishes determine the water content and perform the VOC calculations in accordance with
21、Practice D3960.Weight of Liquid Varnish, (1)A5Weight of dish and varnishbefore baking!2Weight of dishWeight of Baked Varnish,B5Weight of dish and varnishafter baking!2Weight of dishWeight of VOC, C 5A 2BVolume of Liquid Varnish, V 5 ADwhere:D = the density of the varnish in g/L as determined by Test
22、 Methods D115 or D4733.VOC5CV expressed in g/L (2)8.10 To convert VOC in g/L to lb/gal multiply the VOC in g/L by 0.00833.8.11 Calculate the average VOC of the three dishes.9. Report9.1 Report the following information:9.1.1 Identity of the varnish used,9.1.2 Average VOC in g/L or lb/gal,D6053 1429.
23、1.3 Temperature that dishes were baked, and9.1.4 Approximate mass of resin tested.10. Precision and Bias10.1 PrecisionTable 1 lists the results based on a round robin test conducted in accordance with Practice E691 involving fivelaboratories and three materials at three different weights. Each test
24、result was the average of three specimens. Each laboratoryobtained three test results for each material at each weight.10.2 BiasThis test method has no bias because the value for VOC is determined solely in terms of this test method.11. Keywords11.1 electrical insulating varnish; VOC; volatile organ
25、ic compoundSUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this test method since the last issue,D6053 03D6053 08, that may impact the use of this test method. (Approved May 1, 2008May 1, 2014)(1) Revised 8.5 to replace non-mandatory language.(1) Revised 8.2 and 8.
26、5.ASTM International takes no position respecting the 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, a
27、re entirely their 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 standa
28、rdsand should 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 Commit
29、tee on Standards, 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
30、 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/).TABLE 1 Results in Grams/Litre (g/l)Materials SampleSizeAverage Sta
31、ndardDeviationRepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitReproducibilityLimitUnsaturatedPolyester instyrene2 grams 226.8 30.44 5.08 28.18 14.22 78.906 grams 169.8 14.22 2.66 13.21 7.45 36.9910 grams 151.3 13.51 3.83 12.82 10.72 35.90UnsaturatedPolyester invinyl toluene2 grams 282.1 29.02 3.68 26.71 10.30 74.796 grams 211.0 5.32 6.89 7.95 19.29 22.2610 grams 192.5 7.26 4.93 8.01 13.80 22.43UnsaturatedPolyester inDAP2 grams 349.3 38.92 8.02 36.01 22.46 100.86 grams 288.7 12.48 6.50 12.84 18.20 35.9510 grams 268.2 10.59 9.00 12.69 25.20 35.53D6053 143
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