1、Designation:D321807(Reapproved 2018)Standard Specification forPolyolefin Monofilaments1This standard is issued under the fixed designation D3218;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers polyolefin monofilament yarnmaterials,and test methods for standard polyolefin monofila-ments.While designed primarily for te
3、sting standard polyolefinmonofilaments,many of the procedures can be used,with littleor no modification,for other polyolefin monofilaments.However,testing on non-standard polyolefin monofilamentsshould be conducted with caution.See 3.1 for a definition ofstandard polyolefin monofilament.1.2 Only on
4、condition that interlaboratory precision data areavailable for the specific procedure is any test methoddescribed,or referenced in this specification,recommended foracceptance testing of commercial shipments of polyolefinmonofilaments.1.3 The specification for polyolefin raw materials appears inSect
5、ion 4.1.4 The test methods for individual properties appear in thefollowing sections:PropertySectionBreaking Force10Breaking Tenacity10Elongation10Gloss13Hot Water Shrinkage14Initial Modulus10Polyolefin-Material Cleanliness17Resistance to Ultraviolet Radiation15Stability to Thermal Oxidation16Tensil
6、e Properties10Thickness12Width11Yarn Number9NOTE1In most instances,the suitability of these procedures forpolymeric yarns in general,and polyolefin monofilaments in particular,isalready accepted in commercial transactions(see 6.1).1.5 The values stated in SI units are to be regarded asstandard;the v
7、alues in English units are provided as informa-tion only and are not exact equivalents.1.6 The following safety hazards caveat pertains only to thetest methods described in this specification:This standard mayinvolve hazardous materials,operations,and equipment.Thisstandard does not purport to addre
8、ss all of the safety problems,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.7 This international standard was developed in a
9、ccor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM
10、 Standards:2D123 Terminology Relating to TextilesD374 Test Methods for Thickness of Solid Electrical Insu-lation(Metric)D0374_D0374MD1248 Specification for Polyethylene Plastics ExtrusionMaterials for Wire and CableD1776 Practice for Conditioning and Testing TextilesD1907 Test Method for Linear Dens
11、ity of Yarn(Yarn Num-ber)by the Skein MethodD1921 Test Methods for Particle Size(Sieve Analysis)ofPlastic MaterialsD2146 Specification for Propylene Plastic Molding andExtrusion Materials(Withdrawn 1986)3D2256 Test Method for Tensile Properties of Yarns by theSingle-Strand MethodD2258 Practice for S
12、ampling Yarn for TestingD2259 Test Method for Shrinkage of YarnsD2565 Practice for Xenon-Arc Exposure of Plastics In-tended for Outdoor ApplicationsD4101 Classification System and Basis for Specification forPolypropylene Injection and Extrusion MaterialsD4849 Terminology Related to Yarns and Fibers1
13、This specification is under the jurisdiction of ASTM Committee D13 onTextiles and is the direct responsibility of Subcommittee D13.58 on Yarns andFibers.Current edition approved July 1,2018.Published August 2018.Originallyapproved in 1973.Last previous edition approved in 2012 as D3218 07(2012).DOI:
14、10.1520/D3218-07R18.2For 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.3The last approved version of this historical
15、standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Princ
16、iples for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 E203 Test Method for Water Using Volumetric Karl FischerTitrationG26 Practice for Operating Light-Exposure Apparatus(Xenon-Arc Type)With and Without Water for Exposureof Nonmetallic Materials(Discontinued 2001)(With-drawn 2000)32.2 Other Documents:Federal Test Method Standard No.141a,Sept.1,1965,Section 6000,Method 6101“60-Degree Specul