1、Designation: D 3374 04Standard 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 For terminology of other textile terms used in thisspecification, refer to Terminology D 123.4. Sampling and Number of Specimens4.1 Lot SampleAs a lot sample for acceptance testin
10、g,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 sampling unit. In the absence of such agreement,proceed as follows:4.1.1 Yarn Number, Ignition Loss, and Brea
11、king 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.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
12、.4.1.3 Color Stability to Accelerated WeatheringUse theyarn packages taken as a lot sample for strength, and yarnnumber as the lot sample for color stability to acceleratedweathering.1This specification is under the jurisdiction of ASTM Committee D13 onTextiles and is the direct responsibility of Su
13、bcommittee D13.18 on Glass Fiber andits Products.Current edition approved Dec. 1, 2004. Published January 2005. Originallyapproved in 1975. Last previous edition approved in 1999 as D 3374 99.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at ser
14、viceastm.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 10036.4Available from General Services Administration, Specification and C
15、onsumerInformation 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 International, 100 Barr Harbor Drive, PO Box C700, West Consho
16、hocken, PA 19428-2959, United States.NOTE 1An adequate specification or other agreement between thepurchaser and the supplier requires taking into account the variabilitybetween shipping cartons, yarn packages, yarn within a shipping carton,and test specimens from a yarn package to produce a samplin
17、g 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:4.2.1 Yarn Number, Ignition Loss, Breaking Force, Color,and WorkmanshipUse the lot sampling units as labor
18、atorysampling 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-tory sampling units. For small lots, take at least one yarnpackage as a laboratory sampling unit.4.3 Test
19、 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 results oftesting using ANSI/ASQ Z1.9, Inspection Level IV, normalinspection, and an acceptable quality leve
20、l 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 inspection, and an acceptable quality level of1.5 %.4.3.3 Color Stability to Accelerated WeatheringTake then
21、umber 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 of SpecificationD 578 for the applicable yarn construction.5.2 Plastic CoatingThe material used to coat
22、 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,pigmented and stabilized to meet the requirements herein.5.2.1 Optional PlasticizerThe use of plasticizers
23、 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 dimensions shall be agreedupon between the purchaser and the supplier.7. Yarn Number, Ignition Loss, and Breaki
24、ng 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 purchaser and the supplier.NOTE 2Gray and charcoal are considered standard colors. They are ingeneral use a
25、nd 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 shall be considered cause for rejection ofthe yarn package in which they occur:9.1.1 Uncoated or part
26、ially 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 irregularities thatrepresent inherent characteristics of the coating are permitted.9.1.3 Yarns that ha
27、ve 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 secure holding of yarn winds on thepackage.10. Color Stability to Accelerated Weathering10.1 When tested as
28、 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 between the purchaser and thesupplier, other exposure periods and other gray scale ratingsshall be ac
29、ceptable.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 1776, unless otherwisespecified.NOTE 3In any event, 24 h is considered ample exposure time to bringth
30、e samples to moisture equilibrium.12. Material12.1 Upon prior agreement, the purchaser shall accept thesuppliers certification that the materials comply with therequirements of Section 5. In the absence of such an agreementcompliance will be tested using Specification D 578 and Fed.Std. CCC-D-950.13
31、. Put-Up13.1 Verify that the yarn packages and shipping containersconform to agreement by inspection in the purchasers plant.TABLE 1 Physical Property RequirementsAClassi-ficationYarn Number, text (yd/lb)IgnitionLoss,min,%Breaking Force,min, N (lbf)min nominal max Conditioned WetClass 1 99 (5000) 91
32、 (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.D337404214. Yarn Number14.1 Determine the yarn number as directed in Test MethodD 1907. Report the yarn number as metres per kilogram (yardsper p
33、ound). 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 information on precision and bias.15. Ignition Loss15.1 Determine the ignition loss as directed in Test
34、 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 control yarn yardage.16. Breaking Force16.1 Test the breaking force as directed in Test MethodD 2256. A cons
35、tant 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 with a diameter of notless than 12.5 mm (0.5 in.) or may be semi-involute.16.2 Test five specimens per
36、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 force. Immersefor 24 h in distilled water containing no wetting agents.16.3 See Annex A1 for information
37、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 Section 9 or whose color isnot a commercial match to the color standard.18. Color Stability to Accelerate
38、d 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 appropriatesize specimen for a total exposure of 960 h for each laboratoryroll to be tested.18.1.1 Rate the specim
39、ens 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 conformance, including control chartsfurnished by the supplier, a sequential sampling plan, ordouble-sa
40、mpling 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 for all characteristics listed in Sections 511 and Table 1,the lot shall be considered acceptable.19.
41、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 the characteristic(s) that did not conform to therequirements in the first test and average the resul
42、ts 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 acceptable.19.2.3 If the test results obtained as directed in 19.2.2 do notconform to the specified requ
43、irements, the lot shall be consid-ered unacceptable.20. Keywords20.1 appearance; breaking force; color; colorfastness; flex-ibility; ignition loss; thickness; vinyl-coated glass yarns; yarnnumberANNEX(Mandatory Information)A1. INTERLABORATORY TEST DATA FOR PRECISION AND BIAS FOR BREAKING force, THIC
44、KNESS, 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 all of the determinations are taken by the samewell-trained operator using the same piece of test equ
45、ipmentand specimens randomly drawn from the same sample ofmaterial 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 ha
46、ve no bias since the true value of 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.TABLE A1.1 Observed Critical DifferencesProperty NamePercent of Average ObservationsPer
47、AverageClass 1 Class 2Breaking Force 3.7 3.1 5Yarn number 2.8 1.0 2D3374043A1.2 Interlaboratory Test Data6An interlaboratory testwas run in 1986 in which randomly drawn specimens of aClass 1 vinyl-coated glass yarn and a Class 2 vinyl-coated glassyarn were tested in each of four laboratories. Each l
48、aboratoryused 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 in Table A1.2.NOTE A1.1The square roots of the components of variance are beingreported to express th
49、e 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 precision should be used withspecial caution.NOTE A1.3The tabulated values of the critical differences shoul
