1、Designation:D146510(Reapproved 2021)Technical Association of Pulp and Paper IndustrySuggested Method T 652Standard Test Method forBlocking and Picking Points of Petroleum Wax1This standard is issued under the fixed designation D1465;the number immediately following the designation indicates the year
2、 oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the block-ing poin
3、t and picking point of petroleum wax.1.2 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercury,or its vapor,has been dem-onstrated to be hazardous to health and corrosive to materials.Use Caution when handling mercury and
4、mercury-containingproducts.See the applicable product Safety Data Sheet(SDS)for additional information.The potential exists that sellingmercury or mercury-containing products,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.1.3 The values stated i
5、n SI units are to be regarded asstandard.The values given in parentheses are provided forinformation only.1.4 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,healt
6、h,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Internatio
7、nal Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D87 Test Method for Melting Point of Petroleum Wax(Cooling Curve)D938 Test Method for Congealing Point of PetroleumWaxes,Including Petro
8、latumD2423 Test Method for Surface Wax on Waxed Paper orPaperboardE1 Specification for ASTM Liquid-in-Glass Thermometers3.Terminology3.1 Definitions:3.1.1 wax blocking point,nthe lowest temperature atwhich film disruption occurs across 50%of the waxed papersurface when the test strips are separated.
9、3.1.2 wax picking point,nthe temperature at which thefirst film disruption occurs on the waxed paper when test stripsare separated.4.Summary of Test Method4.1 Paper test specimens are coated with the wax sample,folded with the waxed surfaces together,and placed on ablocking plate.The plate is heated
10、 at one end and cooled at theother end to impose a measured temperature gradient along itslength.After a conditioning period on the plate,the specimensare removed,unfolded,and examined.The points of initial filmdisruption(picking point)and where 50%of the specimenwidth is disrupted(50%blocking point
11、)are noted.Thetemperatures of corresponding points on the blocking plate arereported as the picking point and blocking point or blockingrange.5.Significance and Use5.1 Blocking of waxed paper,because of the relatively lowtemperatures at which it may occur,can be a major problem tothe paper-coating i
12、ndustry.For example,when the waxedsurfaces in a roll of waxed paper stick together,upon separa-tion the surface films are marred and the glossy finish isdestroyed.The wax picking point and the wax blocking pointindicate an approximate temperature range at or above whichwaxed surfaces in contact with
13、 each other are likely to causesurface film injury.6.Apparatus6.1 Wax Coating DeviceAny manual-or machine-drivenwaxer that gives uniform coatings of the desired weights to astrip of paper not less than 51 mm(2 in.)wide.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Pro
14、ducts,Liquid Fuels,and Lubricantsand is the direct responsibility ofSubcommittee D02.10.0A on Physical/Chemical Properties.This test method wasprepared jointly by the TechnicalAssociation of the Pulp and Paper Industry and theAmerican Society for Testing and Materials.Current edition approved Jan.1,
15、2021.Published February 2021.Originallyapproved in 1957.Last previous edition approved in 2015 as D1465 10(2015).DOI:10.1520/D1465-10R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume infor
16、mation,refer to the standards Document Summary page onthe ASTM website.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 Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.16.2 Tr
