1、Designation: D 120 09Standard Specification forRubber Insulating Gloves1This standard is issued under the fixed designation D 120; 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 parentheses i
2、ndicates the year of last reapproval. Asuperscript epsilon () 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 specification covers manufacturing and testing ofrubber insulating glove
3、s for protection of workers from elec-trical shock.1.2 Two types of gloves are provided and are designated asType I, non-resistant to ozone, and Type II, resistant to ozone.1.3 Six classes of gloves, differing in electrical characteris-tics, are provided and are designated as Class 00, Class 0, Clas
4、s1, Class 2, Class 3, and Class 4.1.4 The values stated in SI units are to be regarded asstandard. See ASTM SI 10.1.5 The following safety hazards caveat pertains only to thetest method portion, Sections 16, 17, 18, and 19, of thisspecification: This standard does not purport to address all ofthe sa
5、fety 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. For specificprecaution statements, see 18.2.2. Referenced Documents2.1 A
6、STM Standards:2D 297 Test Methods for Rubber ProductsChemicalAnalysisD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 573 Test Method for RubberDeterioration in an AirOvenD 624 Test Method for Tear Strength of ConventionalVulcanized Rubber and Thermoplastic ElastomersD
7、1415 Test Method for Rubber PropertyInternationalHardnessD 2240 Test Method for Rubber PropertyDurometerHardnessD 2865 Practice for Calibration of Standards and Equip-ment for Electrical Insulating Materials TestingF 819 Terminology Relating to Electrical Protective Equip-ment for WorkersSI 10 Stand
8、ard for Use of the International System of Units(SI): The Modern Metric System3. Terminology3.1 Definitions:3.1.1 color splasha splash, smear, or streak of contrastingcolor evident on the inside or outside surface of the gloves thatwas deposited during the dipping operation and is vulcanizedinto the
9、 glove as part of the homogenous compound.3.1.2 glove cuff rollthe roll or reinforced edge of aninsulating glove at the cuff.3.1.3 halogenation treatmentexposure of the entire glovesurface area to a halogen for the purpose of reducing surfacefriction.3.1.4 ozonea very active form of oxygen that may
10、beproduced by corona, arcing, or ultraviolet rays.3.1.5 userthe employer or entity purchasing the equip-ment to be utilized by workers for their protection; in theabsence of such an employer or entity, the individual purchas-ing and utilizing the protective equipment.3.1.6 working areaall finger and
11、 thumb crotches, the palm(area between the wrist and the base of the finger and thumb)and the area of the finger and thumb facing the palm notextending beyond the center line of the crotch. See Fig. 1.3.1.7 For definitions of other terms, refer to TerminologyF 819.4. Significance and Use4.1 This spe
12、cification covers the minimum electrical,chemical, and physical properties guaranteed by the manufac-turer and the detailed procedures by which such properties areto be determined. The purchaser has the option to perform or1This specification is under the jurisdiction of ASTM Committee F18 onElectri
13、cal Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.15 on Worker Personal Equipment. This standard replaces ANSIStandard J 6.6, which is no longer available.Current edition approved June 1, 2009. Published June 2009. Originallyapproved in 1921. Last previous edit
14、ion approved in 2008 as D 120 08.2For 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.1Copyright ASTM Internationa
15、l, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.have performed any of these tests in order to verify theguarantee. Claims for failure to meet the specification aresubject to verification by the manufacturer.4.2 Gloves are used for personal protection; therefore
16、, whenauthorizing their use, a margin of safety shall be allowedbetween the maximum voltage on which they are used and theproof-test voltage at which they are tested. The relationshipbetween proof-test voltage and the maximum voltage at whichthe gloves shall be used is shown in Table 1.4.3 Work prac
17、tices vary from user to user and are dependentupon many factors. These may include, but are not limited to,operating system voltages, construction design, work proce-dure techniques, weather conditions, and so forth. Therefore,except for the restriction set forth in this specification becauseof desi
18、gn limitations, the use and maintenance of this equip-ment is beyond the scope of this specification.4.4 It is common practice and the responsibility of the userof this type of protective equipment to prepare completeinstructions and regulations to govern the correct and safe useof such equipment.5.
19、 Classification5.1 Gloves covered under this specification shall be desig-nated as Type I or Type II; Class 00, Class 0, Class 1, Class 2,Class 3, or Class 4.5.1.1 Type I, non-resistant to ozone, made from a high-gradecis-1,4-polyisoprene rubber compound of natural or syntheticorigin, properly vulca
20、nized.5.1.2 Type II, ozone-resistant made of any elastomer orcombination of elastomeric compounds.5.1.3 The class designation shall be based on the electricalproperties as shown in Table 2 and Table 3.6. Ordering Information6.1 Orders for gloves under this specification should includethe following i
21、nformation:6.1.1 Type,6.1.2 Class,6.1.3 Length, Fig. 26.1.4 Size,6.1.5 Color,6.1.6 Cuff design, and6.1.7 With or without a halogenation treatment.6.2 The listing of types, classes, lengths, sizes, colors, andcuff designs is not intended to mean that all shall necessarily beavailable from manufacture
22、rs; it signifies only that, if made,they shall conform to the details of this specification.7. Manufacture and Marking7.1 The gloves shall be produced by a seamless process.FIG. 1 Working Area of a Rubber Insulating GloveTABLE 1 Proof-Test/Use Voltage RelationshipClass of GloveAC Proof-TestVoltage,
23、rms, VMaximum ACUse Voltage acrms, VDC Proof-TestVoltage, avg, VMaximum DC UseVoltage avg, V00 2 500 500 10 000 7500 5 000 1 000 20 000 1 5001 10 000 7 500 40 000 11 2502 20 000 17 000 50 000 25 5003 30 000 26 500 60 000 39 7504 40 000 36 000 70 000 54 000D1200927.2 The gloves shall have a smooth fi
24、nish and the cuff edgesshall be finished with a roll or a reinforcing strip of rubber,unless otherwise specified.7.3 Each glove shall be marked clearly and permanentlywith the name of the manufacturer or supplier, ASTM D 120,type, class, and size. All such marking shall be confined to thecuff portio
25、n of the glove and shall be nonconducting andapplied in such a manner as to not impair the requiredproperties of the glove.7.3.1 Each glove shall be marked with a label that gives theinformation specified in 7.3. This label shall be the colorspecified for each voltage class: Class 00beige, Class0red
26、, Class 1white, Class 2yellow, Class 3green, andClass 4orange.7.4 At the request of the user, the gloves may be given ahalogenation treatment to reduce surface friction. This treat-ment shall have no detrimental effect on the electrical, chemi-cal, or physical properties of the gloves.8. Dimensions
27、and Permissible Variations8.1 Sample gloves selected in accordance with 13.2 shallfall within the thickness limits specified in Table 4, whendetermined in accordance with 17.1.8.2 Sample gloves selected in accordance with 13.2 shallconform to standard sizes when determined in accordance with17.2. St
28、andard sizes are 203 mm (8 in.), 216 mm (812 in.), 229mm (9 in.), 241 mm (912 in.), 254 mm (10 in.), 267 mm (1012in.), 279 mm (11 in.), 292 mm (1112 in.), and 305 mm (12 in.).The permissible variation in size shall be 613 mm (612 in.).8.3 Sample gloves selected in accordance with 13.2 shallconform t
29、o standard lengths when measured in accordancewith 17.3.8.3.1 Standard lengths for Class 00 gloves are 280 mm (11in.), and 360 mm (14 in.). The permissible variations shall be613 mm (612 in.).8.3.2 Standard lengths for Class 0 gloves are 280 mm (11in.), 360 mm (14 in.), 410 mm (16 in.), and 460 mm (
30、18 in.).The permissible variations shall be 613 mm (612 in.).8.3.3 Standard lengths for Class 1, 2, and 3 gloves are 360mm (14 in.), 410 mm (16 in.), and 460 mm (18 in.). Thepermissible variation shall be 613 mm (612 in.).8.3.4 Standard lengths for Class 4 gloves are 410 mm (16in.) and 460 mm (18 in
31、.). The permissible variation shall be613 mm (612 in.).9. Workmanship and Finish9.1 Gloves shall be free on both inner and outer surface ofharmful physical irregularities that can be detected by thoroughtest and inspection.9.1.1 Harmful physical irregularities may be defined as anyfeature that disru
32、pts the uniform, smooth surface contour andrepresents a potential hazard to the user, such as pinholes,cracks, blisters, cuts, conductive embedded foreign matter,creases, pinch marks, voids (entrapped air), prominent ripples,and prominent mold marks.9.2 Nonharmful physical irregularities may be defi
33、ned assurface irregularities present on the inner and outer surfaces ofthe rubber glove due to imperfections on forms or molds andinherent difficulties in the manufacturing process. These irregu-larities may appear as mold marks that look like cuts eventhough they are actually a raised ridge of rubb
34、er, indentations,protuberances, embedded foreign material, or color splashesthat are acceptable provided that:9.2.1 The indentations, protuberance or mold marks tend toblend into a smooth slope upon stretching of the material.9.2.2 The rubber thickness at any irregularity conforms tothe thickness re
35、quirements.9.2.3 Foreign material remains in place when the glove isfolded and stretched with the material surrounding it.9.2.4 Color splashes are no larger than 1 mm in anydirection on the inner surface of the work area.9.2.4.1 The working area is defined as all finger and thumbcrotches, the palm (
36、area between the wrist and the base of thefinger and thumb) and the area of the finger and thumb facingthe palm not extending beyond the center line of the crotch.See Fig. 1.10. Chemical and Physical Requirements10.1 Glove test material taken from sample gloves selectedin accordance with 13.3 shall
37、conform to physical requirementsin Table 5 and the accelerated aging in 19.2.6.TABLE 2 AC Voltage Requirement Proof Test CurrentsAClass ofGloveProof-TestVoltage,rms, VMinimumBreakdownVoltage,rms, VMaximum Proof-Test Current, mA280-mm(11-in.) Glove360-mm(14-in.) Glove410-mm(16-in.) Glove460-mm(18-in.
38、) Glove50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60HZ00 2 500 4 000 6.7 8 10 12BBBB0 5 000 6 000 6.7 8 10 12 11.7 14 13.3 161 10 000 20 000 . . 11.7 14 13.3 16 15 182 20 000 30 000 . . 13.3 16 15 18 16.7 203 30 000 40 000 . . 15 18 16.7 20 18.3 224 40 000 50 000 . . . . 18.3 22 20 24AProof test current sha
39、ll be measured to an accuracy of 61 mA.BNot applicable.TABLE 3 DC Voltage RequirementsClass of GloveProof-TestVoltage avg VMinimum BreakdownVoltage avg V00 10 000 13 0000 20 000 35 0001 40 000 60 0002 50 000 70 0003 60 000 80 0004 70 000 90 000D12009310.2 In the event of a dispute, the identificatio
40、n of the rubberpolymer in Type I gloves shall be performed in accordancewith 19.1.10.3 Type II glove test material taken from sample glovesselected in accordance with 13.3 shall show no visible effectsof ozone when tested in accordance with 18.6. Any visiblesigns of ozone deterioration of the glove
41、material, such aschecking, cracking, breaks, pitting, and so forth, shall beconsidered as evidence of failure to meet the requirements ofType II gloves.11. Electrical Requirements11.1 Each glove shall be given a proof test and shallwithstand the 50-Hz or 60Hz AC proof-test voltage (rmsvalue) or the
42、dc proof-test voltage (average value) specified inTable 2 or Table 3. The proof test shall be performed inaccordance with Section 18. The test voltage shall be appliedcontinuously for 3 min.11.1.1 When the ac proof test is used, the 60-Hz proof-testcurrent shall not exceed the values specified in Ta
43、ble 2 at anytime during the test period. (Note 1).11.2 Sample gloves selected in accordance with 13.2 shallnot break down at voltages below those specified in Table 2 orTable 3 when tested in accordance with Section 18.11.2.1 Gloves that have been subjected to a minimumbreakdown voltage test shall n
44、ot be used for electric protection.Proof test current shall be measured to an accuracy of 61 mA.11.3 Sample gloves selected in accordance with 13.2 shallbe subjected to a 50-Hz or 60Hz AC moisture absorption/proof test in accordance with Section 18.11.3.1 The 50-Hz or 60Hz AC proof test current shal
45、l notexceed the values specified in Table 2 by more than 2 mA.NOTE 1A proof-test current is an indication of the validity of theglove make-up, the dielectric constant of the type of material used, thethickness, and the total contact area under test.12. Guarantee12.1 The manufacturer or supplier shal
46、l replace, withoutcharge to the purchaser, unused gloves which, at any timewithin a period of nine (9) months from date of initial deliveryof shipment to the purchaser or his designee, fail to pass thetests in this specification. This guarantee will be binding on themanufacturer or supplier only if
47、the gloves have been properlystored and have not been subjected to more than an originalacceptance test and one retest.12.2 Any acceptance test made by the purchaser, or thepurchasers designee, shall be performed within the first two(2) months of the guarantee period unless otherwise specified.NOTE
48、2Proper storage means that gloves are stored right side out, notdistorted and not stored directly above or in proximity to steam pipes,radiators, or other sources of artificial heat, or exposed to direct sunlightFIG. 2 Length and Contour Measurements on Contour Cuff GlovesTABLE 4 Thickness Measureme
49、ntsClass ofGloveMinimum ThicknessMaximum ThicknessIn Crotch Other Than Crotchmm in. mm in. mm in.00 0.20 0.008 0.25 0.010 0.75 0.0300 0.46 0.018 0.51 0.020 1.02 0.0401 0.63 0.025 0.76 0.030 1.52 0.0602 1.02 0.040 1.27 0.050 2.29 0.0903 1.52 0.060 1.90 0.075 2.92 0.1154 2.03 0.080 2.54 0.100 3.56 0.140TABLE 5 Physical RequirementsProperty Type I Type IITensile strength, min, Die C, MPa (psi) 17.2 (2500) 10.3 (1500)Tensile stress at 200 %, max, MPa (psi) 2.1 (300) 2.1 (300)Ultimate elongation, min, % 600 500Tension set, max at 400, % 25 25Tear resistanc
