1、Designation: D 3374 07Standard Specification forVinyl-Coated Glass Yarns1This standard is issued under the fixed designation D 3374; 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
2、 indicates the year of last reapproval. Asuperscript epsilon (e) 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 vinyl-coated glass yarns.These yarns are manufac
3、tured in two basic classes. Theseclasses have been established that when properly woven intoscreening, satisfactory strength, durability, and insect protec-tion are obtained. The two classes are as follows:1.1.1 Class 1Nominal thickness 0.292 mm (0.0115 in.).1.1.2 Class 2Nominal thickness 0.330 mm (
4、0.0130 in.).1.2 The values stated in either SI or inch-pound units are tobe regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in nonconformance
5、 with thisspecification.1.3 The following precautionary statement pertains only tothe test method portions, Sections 1221, of this specification.This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard
6、to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 578 Specification for Glass Fiber StrandsD 1907 Test Method for Linear Density of Yarn (YarnNum
7、ber) by the Skein MethodD 2256 Test Method for Tensile Properties of Yarns by theSingle-Strand MethodD 4963 Test Method for Ignition Loss of Glass Strands andFabricsD 7018 Terminology Relating to Glass Fiber and Its Prod-ucts2.2 ANSI/ASQC Standards:ANSI/ASQC Z1.4 Sampling Procedures for Inspection b
8、yAttributes3ANSI/ASQC Z1.9 Sampling Procedures and Tables forInspection by Variables for Percent Nonconforming32.3 Federal Standard:CCC-D-950 Specification, Dyeing and After Treating Pro-cesses for Cotton Cloths42.4 AATCC Standard:Evaluation Procedure 1, Gray Scale for Color Change53. Terminology3.1
9、 Definitions:3.1.1 For all terminology under the jurisdiction of Subcom-mittee D13.18, refer to Terminology D 7018.3.1.2 The following terms are relevant to this standard:moisture equilibrium, vinyl-coated glass yarn.3.1.3 For terminology of other textile terms used in thisspecification, refer to Te
10、rminology D 123.4. Sampling and Number of Specimens4.1 Lot SampleAs a lot sample for acceptance testing,take at random the number of yarn packages directed in anapplicable material specification or other agreement betweenthe purchaser and the supplier. Consider yarn packages to bethe primary samplin
11、g unit. In the absence of such agreement,proceed as follows:4.1.1 Yarn Number, Ignition Loss, and Breaking ForceTake the number of yarn packages specified in ANSI/ASQZZ1.9 using the count of yarn packages in the lot as a measureof the lot size.1This specification is under the jurisdiction of ASTM Co
12、mmittee D13 onTextiles and is the direct responsibility of Subcommittee D13.18 on Glass Fiber andits Products.Current edition approved Dec. 1, 2007. Published January 2008. Originallyapproved in 1975. Last previous edition approved in 2004 as D 3374 04.2For referenced ASTM standards, visit the ASTM
13、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.3Available from American National Standards Institute, 11 W. 42nd St., 13thFloor, New York, NY 10036.4Availa
14、ble from General Services Administration, Specification and ConsumerInformation Distribution Section (WFSIS), Washington Navy Yard, Bldg. 197,Washington, DC 20407.5Available from American Association of Textile Chemists and Colorists, P.O.Box 12215, Research Triangle Park, NC 27709.1Copyright ASTM I
15、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.2 Color and WorkmanshipTake the number of yarnpackages specified in ANSI/ASQZ Z1.4 using the count ofyarn packages in the lot as a measure of the lot size.4.1.3 Color Stability to Accelerated Weathe
16、ringUse theyarn packages taken as a lot sample for strength, and yarnnumber as the lot sample for color stability to acceleratedweathering.NOTE 1An adequate specification or other agreement between thepurchaser and the supplier requires taking into account the variabilitybetween shipping cartons, ya
17、rn packages, yarn within a shipping carton,and test specimens from a yarn package to produce a sampling plan withmeaningful producers risk, consumers risk, acceptable quality level, andlimiting quality level.4.2 Laboratory SampleAs a laboratory sample for accep-tance testing, proceed as follows:4.2.
18、1 Yarn Number, Ignition Loss, Breaking Force, Color,and WorkmanshipUse the lot sampling units as laboratorysampling units.4.2.2 Color Stability to Accelerated Weathering and Low-Temperature FlexibilityUse every fifth yarn package in thelot sample for breaking force, and yarn number as the labora-tor
19、y sampling units. For small lots, take at least one yarnpackage as a laboratory sampling unit.4.3 Test SpecimensProceed as follows:4.3.1 Yarn Number, Ignition Loss, and Breaking ForceTake the number of specimens per laboratory sampling unitspecified in the applicable test method. Evaluate the result
20、s oftesting using ANSI/ASQ Z1.9, Inspection Level IV, normalinspection, and an acceptable quality level of 1.5 %.4.3.2 Color and WorkmanshipUse the yarn packages inthe lot sample as the specimens. Evaluate the results ofinspecting the specimens using ANSI/ASQZ Z1.4, InspectionLevel II, normal inspec
21、tion, and an acceptable quality level of1.5 %.4.3.3 Color Stability to Accelerated WeatheringTake thenumber of specimens per laboratory sampling unit specified inthe test methods.REQUIREMENTS5. Material5.1 Input YarnThe yarn shall be glass continuous filamentglass yarn which meets the requirements o
22、f SpecificationD 578 for the applicable yarn construction.5.2 Plastic CoatingThe material used to coat or impreg-nate the glass continuous filament yarn shall be a compound ofpolymerized or copolymerized vinyl chloride resin, plasticizedwith phosphate or phthalate ester plasticizers exclusively,pigm
23、ented and stabilized to meet the requirements herein.5.2.1 Optional PlasticizerThe use of plasticizers otherthan phosphates and phtalates shall be agreed upon betweenpurchaser and supplier.6. Put-Up6.1 The vinyl-coated glass yarn shall be put up on packagesor tubes, and in containers whose dimension
24、s shall be agreedupon between the purchaser and the supplier.7. Yarn Number, Ignition Loss, and Breaking Force7.1 The requirements of yarn number, ignition loss, andbreaking force are specified in Table 1.8. Color8.1 Samples shall be a commercial match to color standardsagreed upon between the purch
25、aser and the supplier.NOTE 2Gray and charcoal are considered standard colors. They are ingeneral use and demand and are the most readily available. Other colorsare usually available on a made-to-order basis.9. Workmanship9.1 As agreed upon between the purchaser and the supplier,the following defects
26、 shall be considered cause for rejection ofthe yarn package in which they occur:9.1.1 Uncoated or partially coated sections of yarn.9.1.2 Slubs, large lumps, or coating irregularities of suchdegree as to adversely affect weaveability of the yarn or causeexcessive rejects of the final product. Small
27、irregularities thatrepresent inherent characteristics of the coating are permitted.9.1.3 Yarns that have been bruised, cut, or mashed.9.1.4 Splices exceeding 25 mm (1 in.) in length or havingunbonded or fused ends.9.1.5 Any defect affecting the free unhampered unwindingof yarn or affecting the secur
28、e holding of yarn winds on thepackage.10. Color Stability to Accelerated Weathering10.1 When tested as specified in Section 18, the observedcolor change after 480 h shall be no greater than Step 3 on thegray scale and after 960 h shall be no greater than Step 2 on thegray scale.10.2 When agreed upon
29、 between the purchaser and thesupplier, other exposure periods and other gray scale ratingsshall be acceptable.TEST METHODS11. Conditioning11.1 Condition the laboratory samples without precondi-tioning for a period of at least 5 h in the atmosphere for testingglass textiles as directed in Practice D
30、 1776, unless otherwisespecified.NOTE 3In any event, 24 h is considered ample exposure time to bringthe samples to moisture equilibrium.12. Material12.1 Upon prior agreement, the purchaser shall accept thesuppliers certification that the materials comply with theTABLE 1 Physical Property Requirement
31、sAClassi-ficationYarn Number, text (yd/lb)IgnitionLoss,min,%Breaking Force,min, N (lbf)min nominal max Conditioned WetClass 1 99 (5000) 91 (5450) 84 (5900) 58 17.8 (4.0) 15.6(3.5)Class 2 160 (3100) 136 (3650) 118 (4200) 53 28.9 (6.5) 24.5(5.5)ANominal values are supplied for information only.D337407
32、2requirements of Section 5. In the absence of such an agreementcompliance will be tested using Specification D 578 and Fed.Std. CCC-D-950.13. Put-Up13.1 Verify that the yarn packages and shipping containersconform to agreement by inspection in the purchasers plant.14. Yarn Number14.1 Determine the y
33、arn number as directed in Test MethodD 1907. Report the yarn number as metres per kilogram (yardsper pound). Test one specimen having a skein length of 27.5 m(30 yd) per laboratory sampling unit.NOTE 4Tex (metres per kilogram) is equal to 496 055 divided by theyards per pound.14.2 See Annex A1 for i
34、nformation on precision and bias.15. Ignition Loss15.1 Determine the ignition loss as directed in Test MethodD 4963 using one 27.5-m (30-yd) skein of vinyl-coated glassyarn from each laboratory sampling unit.NOTE 5An estimation of ignition loss can be obtained by subtractinginput yardage from contro
35、l yarn yardage.16. Breaking Force16.1 Test the breaking force as directed in Test MethodD 2256. A constant rate of extension (CRE) tester is recom-mended with pneumatic type clamps with fixed nubbingsurfaces which are integral with one of the clamping surfaces.The snubbing surfaces may be circular w
36、ith a diameter of notless than 12.5 mm (0.5 in.) or may be semi-involute.16.2 Test five specimens per laboratory sampling unit usingeach of the following procedures:16.2.1 Use Option A1 for conditioned single-strandFORCE. Preconditioning is not required.16.2.2 Use Option A2 for wet single-strand for
37、ce. Immersefor 24 h in distilled water containing no wetting agents.16.3 See Annex A1 for information on precision and bias.17. Color and Workmanship17.1 Examine each yarn package in the laboratory samplefor visual appearance of its outer surface. Reject any yarnpackage having defects defined in Sec
38、tion 9 or whose color isnot a commercial match to the color standard.18. Color Stability to Accelerated Weathering18.1 Determine the color stability to accelerated weatheringas directed in Practice D 4329, Cycle A, using one appropriatesize specimen for a total exposure of 480 h and one appropriates
39、ize specimen for a total exposure of 960 h for each laboratoryroll to be tested.18.1.1 Rate the specimens for color change after exposure inaccordance with AATCC Evaluation Procedure 1.CONFORMANCE AND INDEXING19. Conformance19.1 The purchaser and the supplier shall agree on aprocedure to establish c
40、onformance, including control chartsfurnished by the supplier, a sequential sampling plan, ordouble-sampling plan outlined in 19.2.19.2 In the absence of a control chart or sequential samplingplan, proceed as directed in 19.2.1-19.2.3.19.2.1 If the test results for a lot conform to the require-ments
41、 for all characteristics listed in Sections 511 and Table 1,the lot shall be considered acceptable.19.2.2 If the test results for one or more characteristics donot conform to the requirements, take a new laboratory samplefrom either the original lot sample or a new lot sample. Test thenew sample for
42、 the characteristic(s) that did not conform to therequirements in the first test and average the results of the firstand second samples as if they were one test of double theoriginal number of specimens. If the new average(s) con-form(s) to the specified requirements, the lot shall be consid-ered ac
43、ceptable.19.2.3 If the test results obtained as directed in 19.2.2 do notconform to the specified requirements, the lot shall be consid-ered unacceptable.20. Keywords20.1 appearance; breaking force; color; colorfastness; flex-ibility; ignition loss; thickness; vinyl-coated glass yarns; yarnnumberANN
44、EX(Mandatory Information)A1. INTERLABORATORY TEST DATA FOR PRECISION AND BIAS FOR BREAKING force, THICKNESS, AND YARNNUMBERA1.1 SummaryIn 95 out of 100 cases when comparingtwo averages, the differences should not exceed the amountsshown in Table A1.1 for the respective number of determina-tions when
45、 all of the determinations are taken by the samewell-trained operator using the same piece of test equipmentand specimens randomly drawn from the same sample ofTABLE A1.1 Observed Critical DifferencesProperty NamePercent of Average ObservationsPer AverageClass 1 Class 2Breaking Force 3.7 3.1 5Yarn n
46、umber 2.8 1.0 2D3374073material but tested at different times. Larger differences arelikely to occur under all other conditions.A1.1.1 Larger differences are likely to occur under all otherconditions. The test methods specified for breaking force, andyarn number have no bias since the true value of
47、breakingforce, and yarn number can only be defined in a specific testmethod. SectionsA1.2-A1.4 explain the basis for this summaryand for evaluations made under other conditions.A1.2 Interlaboratory Test Data6An interlaboratory testwas run in 1986 in which randomly drawn specimens of aClass 1 vinyl-c
48、oated glass yarn and a Class 2 vinyl-coated glassyarn were tested in each of four laboratories. Each laboratoryused two operators, each of whom tested the number ofspecimens shown in A1.1 for each material at different times.The components of variance expressed as coefficients ofvariation are listed
49、 in Table A1.2.NOTE A1.1The square roots of the components of variance are beingreported to express the variability as percent of the average rather than asthe square of that unit of measure.A1.3 PrecisionFor the components of variance reportedin Table A1.2, two averages of observed values should beconsidered significantly different at the 95 % probability levelif the difference equals or exceeds the critical differences listedin Table A1.3.NOTE A1.2Since the interlaboratory test included only four labora-tories, estimates of between-laboratory precisi
