1、Designation: D 6053 03An American National StandardStandard Test Method forDetermination of Volatile Organic Compound (VOC) Contentof Electrical Insulating Varnishes1This standard is issued under the fixed designation D 6053; the number immediately following the designation indicates the year oforig
2、inal adoption or, in the case of revision, the year of last 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 amountof vola
3、tile organic compounds emitted during cure of electricalinsulating varnishes.1.2 The values stated in SI units are the standard.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
4、appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. See Section 7 forspecific precautions.2. Referenced Documents2.1 ASTM Standards:2D 115 Test Methods for Testing Solvent Containing Var-nishes Used for Electrical InsulationD 1711 Termino
5、logy Relating to Electrical InsulationD 3960 Practice for Determining Volatile Organic Com-pound (VOC) Content of Paints and Related CoatingsD 4733 Test Methods for Solventless Electrical InsulatingVarnishesD 5423 Specification for Forced-Convection LaboratoryOvens for Evaluation of Electrical Insul
6、ationE 691 Standard Practice for Conducting an InterlaboratoryStudy to Determine the Precision of a Test Method3. Terminology3.1 Definition of Term Specific to This Standard:3.1.1 varnish, electrical insulating, n a liquid resin sys-tem that is applied to and cured on electrical componentsproviding
7、electrical, mechanical, and environmental protec-tion.3.1.1.1 DiscussionThere are two types of electrical insu-lating varnish: solvent-containing and solventless. The solvent-containing varnish is a solution, dispersion, or emulsion of apolymer or mixture of polymers in a volatile, nonreactableliqui
8、d. The solventless type is a liquid resin system free ofvolatile, nonreactable solvents.3.1.2 For definitions of other terms pertaining to this testmethod, refer to Terminology D 1711.4. Significance and Use4.1 This test method determines the volatile organic contentof an electrical insulating varni
9、sh. It utilizes a procedure wheredishes containing a known amount of varnish are baked and theamount of volatile organic compound is measured. Calcula-tions are performed to express this in g/L or lb/gal. This testmethod is applicable to all types of varnishes. However,waterborne varnishes while bak
10、ed under the same conditionsneed to have water content determined and calculations per-formed in accordance with Practice D 3960.4.1.1 During the cure of electrical insulating varnishes someorganic material is volatilized. A determination of the amountthat is volatilized is useful for estimating the
11、 amount of curedvarnish on electrical units and volatile organic emissions froma manufacturing facility.5. Interferences5.1 The amount of volatile organic content determined bythis test method is known to be affected by the rate of airexchange in the baking oven.6. Apparatus6.1 Weighing Dishes, alum
12、inum, approximately 60 mm (238in.) in diameter and 15 mm (58 in.) high on the sides.6.2 Forced-Convection Oven, see Specification D 5423-Type II.6.3 Desiccator.7. Hazards7.1 PrecautionDo not use varnish at temperatures abovethe flash point when inadequate ventilation, and the possibilityof flames or
13、 sparks exist. Store varnish in sealed containers.1This standard is under the jurisdiction of ASTM Committee D09 on Electricaland Electronic Insulating Materials and is the direct responsibility of SubcommitteeD09.01 on Electrical Insulating Varnishes, Powders, and Encapsulating Compounds.Current ed
14、ition approved Oct. 1, 2003. Published November 2003. Originallyapproved in 1996. Last previous edition approved in 2000 as D 6053 - 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume in
15、formation, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Procedure8.1 Weigh three aluminum dishes to the nearest 0.01 g.8.2 Add approximately 2 to 10 g of the varni
16、sh to be testedto each dish.8.3 Weigh each dish and varnish to the nearest 0.01 g.8.4 Roll the resin around in the dishes to ensure an evencoating.8.5 Place the dishes in a forced-convection oven at 150 62C. Other temperatures may be used when agreed to byinterested parties.8.6 After 61 6 1 min remo
17、ve the dishes from the oven.8.7 Cool in desiccator.8.8 Weigh each dish to the nearest 0.01 g.8.9 Calculate the volatile organic compound (VOC) contentfor each dish as follows except for waterborne varnishes. Forwaterborne varnishes determine the water content and performthe VOC calculations in accor
18、dance with Practice D 3960.Weight of Liquid Varnish, (1)A 5 Weight of dish and varnish before baking!2Weight of dishWeight of Baked Varnish,B 5 Weight of dish and varnish after baking!2Weight of dishWeight of VOC, C 5 A 2 BVolume of Liquid Varnish, V 5ADwhere:D = the density of the varnish in g/L as
19、 determined by TestMethods D 115 or D 4733.VOC 5CVexpressed in g/L (2)8.10 To convert VOC in g/L to lb/gal multiply the VOC ing/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
20、 lb/gal,9.1.3 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 roundrobin test conducted in accordance with Practice E 691 involv-ing five laboratories and three materials at three differentweights.
21、 Each test result was the average of three specimens.Each laboratory obtained three test results for each material ateach weight.10.2 BiasThis test method has no bias because the valuefor VOC is determined solely in terms of this test method.11. Keywords11.1 electrical insulating varnish; VOC; volat
22、ile organiccompoundD6053032ASTM 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 infri
23、ngement of such rights, are 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 standar
24、d or for additional standardsand 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 view
25、s known to the ASTM Committee 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 contactin
26、g 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).TABLE 1 Results in Grams/Litre (g/l)Materials SampleSizeAverage StandardDeviationRepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabili
27、tyLimitReproducibilityLimitUnsaturatedPolyester 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 35.53D6053033
