1、Designation: D6053 14Standard 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 oforiginal adoption or, in the case o
2、f 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 amountof volatile organic compounds emitted
3、during cure of electricalinsulating varnishes.1.2 The values stated in SI units are to be regarded asstandard. The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.3 This standard does not purport to
4、 address all of thesafety concerns, 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. See Section 7 forspecific precautions.2. Referenced
5、 Documents2.1 ASTM Standards:2D115 Test Methods for Testing Solvent Containing Var-nishes Used for Electrical InsulationD1711 Terminology Relating to Electrical InsulationD3960 Practice for Determining Volatile Organic Compound(VOC) Content of Paints and Related CoatingsD4733 Test Methods for Solven
6、tless Electrical InsulatingVarnishesD5423 Specification for Forced-Convection Laboratory Ov-ens for Evaluation of Electrical InsulationE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.
7、1 varnish, electrical insulating, n a liquid resin systemthat is applied to and cured on electrical components providingelectrical, mechanical, and environmental protection.3.1.1.1 DiscussionThere are two types of electrical insu-lating varnish: solvent-containing and solventless. The solvent-contai
8、ning varnish is a solution, dispersion, or emulsion of apolymer or mixture of polymers in a volatile, nonreactableliquid. 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 D171
9、1.4. Significance and Use4.1 This test method determines the volatile organic contentof an electrical insulating varnish. 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
10、this in g/L or lb/gal. This testmethod is applicable to all types of varnishes. However,waterborne varnishes while baked under the same conditionsneed to have water content determined and calculations per-formed in accordance with Practice D3960.4.1.1 During the cure of electrical insulating varnish
11、es someorganic material is volatilized. A determination of the amountthat is volatilized is useful for estimating the amount of curedvarnish on electrical units and volatile organic emissions froma manufacturing facility.5. Interferences5.1 The amount of volatile organic content determined bythis te
12、st method is known to be affected by the rate of airexchange in the baking oven.6. Apparatus6.1 Weighing Dishes, aluminum, approximately 60 mm(238 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.1This standard is under
13、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 edition approved May 15, 2014. Published May 2014. Originallyapproved in 1996
14、. Last previous edition approved in 2008 as D6053 - 08. DOI:10.1520/D6053-14.2For 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 ont
15、he ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17. Hazards7.1 WarningDo not use varnish at temperatures abovethe flash point when inadequate ventilation,
16、 and the possibilityof flames or sparks exist. Store varnish in 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 testedto each dish. Each dish needs to contain approximately thesame amount of varnish.8.3 Weigh ea
17、ch 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 6 2C. Other temperatures are permitted to be used when agreed toby interested parties.8.6 After 61 6 1 min remove the dishes from the ove
18、n.Other times are permitted to be used when agreed to byinterested parties.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 c
19、ontent and performthe VOC calculations in accordance with Practice D3960.Weight of Liquid Varnish, (1)A 5 Weight of dish and varnish before baking! 2 Weight of dishWeight of Baked Varnish,B 5 Weight of dish and varnish after baking! 2 Weight of dishWeight of VOC, C 5 A 2 BVolume of Liquid Varnish, V
20、 5ADwhere:D = the density of the varnish in g/L as determined by TestMethods D115 or D4733.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
21、 of the varnish used,9.1.2 Average VOC in g/L or 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 E691 involv-ing five laboratories
22、 and three materials at three differentweights. 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. Keyword
23、s11.1 electrical insulating varnish; VOC; volatile organiccompoundD6053 142SUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this test method since the last issue,D6053 08, that may impact the use of this test method. (Approved May 1, 2014)(1) Revised 8.2 and 8.5.AST
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28、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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Results in Gra
29、ms/Litre (g/l)Materials SampleSizeAverage StandardDeviationRepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitReproducibilityLimitUnsaturatedPolyester 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
30、.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
