ASTM D2534-1988(2004) Standard Test Method for Coefficient of Kinetic Friction for Wax Coatings《石蜡覆层动态摩擦系数的标准试验方法》.pdf
《ASTM D2534-1988(2004) Standard Test Method for Coefficient of Kinetic Friction for Wax Coatings《石蜡覆层动态摩擦系数的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D2534-1988(2004) Standard Test Method for Coefficient of Kinetic Friction for Wax Coatings《石蜡覆层动态摩擦系数的标准试验方法》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 2534 88 (Reapproved 2004)An American National StandardStandard Test Method forCoefficient of Kinetic Friction for Wax Coatings1This standard is issued under the fixed designation D 2534; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the coef-ficient of kinetic friction for
3、a petroleum wax coating orwax-based hot melt coating when sliding over itself.1.2 This standard does not purport to 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 deter
4、mine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 585 Practice for Sampling and Accepting a Single Lot ofPaper, Paperboard, Fiberboard, or Related ProductD 1465 Test Method for Blocking and Picking Points ofPetroleum Wax3. Terminology3.1 Defi
5、nitions:3.2 frictionthe resistance to sliding exhibited by twosurfaces in contact with each other. Basically there are twofrictional properties exhibited by any surface; static frictionand kinetic friction.3.3 kinetic frictionthe force that resists motion when asurface is moving with a uniform veloc
6、ity; it is, therefore,equal and opposite to the force required to maintain sliding ofthe surface with a uniform velocity.4. Summary of Test Method4.1 A coated surface under load is pulled at a uniform rateover a second coated surface. The force required to move theload is measured, and the coefficie
7、nt of kinetic friction iscalculated.5. Significance and Use5.1 The coefficient of friction is related to the slip propertiesof many commercial articles that have been coated withpetroleum wax (for example, butter cartons and wax-impregnated or hot melt coated corrugated board).6. Apparatus6.1 Sled A
8、ssembly, as shown in Fig. 1, weighing 180 6 1g,and consisting of the following parts:6.1.1 Brass Block, 25 mm (1 in.) wide by 13 mm (12 in.)thick by 75 mm (3 in.) long,6.1.2 Microscope Slide, cemented to one surface, 25 mm (1in.) by 75 mm (3 in.), and6.1.3 Detachable Handle, using 1.5 mm (116 in.) w
9、eld rod.6.2 Horizontal Plane Assembly and Pulling Device, consist-ing of a metal or wood sheet covered by a smooth, flat piece ofglass approximately 150 by 300 mm (6 by 12 in.). The planeshall be supported by two 250 by 300-mm (10 by 12 in.)diagonal shelf-brackets. A board attached across the bracke
10、tsshall be clamped in the jaws of the lower crosshead of anelectronic load cell-type tension tester. Adjust the assembly sothat the glass surface is level. Attach a low-friction pulley at theedge of the plane with the outer side centered directly beneaththe load cell of the testing machine and the b
11、ottom side levelwith the sled handle. Connect the sled handle to the load cell ofthe tester by a light, flexible metal cable or polyester cordpassing around the pulley.6.3 Low-Friction Pulley, consisting of a pulley mounted inhardened steel cone bearings on a metal fork. The pulleyshould be construc
12、ted from materials having hardness anddurability equivalent to phenolic-type materials.7. Materials7.1 Scissors or Cutter, suitable for cutting waxed specimento the desired dimensions.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the dir
13、ect responsibility of SubcommitteeD02.10 on Properties of Petroleum Wax.Current edition approved May 1, 2004. Published June 2004. Originallyapproved in 1966. Last previous edition approved in 1999 as D 253488 (1999).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact AST
14、M Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 Adhesive Tapes, single-fa
15、ced and double-faced, 13 to 20mm (12 to34 in.) in width.38. Sampling and Test Specimens8.1 Test specimens may be flexible, such as wax-coatedpaper, or rigid, such as wax-coated paperboard or corrugated(Note 1). From each test unit obtained in accordance withPractice D 585:8.1.1 For wax-coated paper,
16、 cut test specimens of two sizes:250 by 130 mm (10 by 5 in.) and 120 by 25 mm (5 by 1 in.).8.1.2 For wax-coated paperboard or corrugated board, cuttest specimens of two sizes: 250 by 130 mm (10 by 5 in.) and75 by 25 mm (3 by 1 in.).NOTE 1For evaluation of wax, it is necessary to prepare test speci-m
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