1、Designation:D680107(Reapproved 2015)Standard Test Method forMeasuring Maximum Spontaneous Heating Temperature ofArt and Other Materials1This standard is issued under the fixed designation D6801;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、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 a small-scale laboratory proce-dure to determine the self heating tendency of
3、oil-basedmaterials by exposure to elevated temperatures in air in acontrolled semi-adiabatic system.1.2 This test method has been developed to address anurgent need to identify oil-based materials that may requirelabeling for spontaneous heating tendency.Studies based onthis test method may allow th
4、e development of a practice toidentify such oil-based materials.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresp
5、onsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For safety concernsspecific to disposal of solvent-soaked rags,see Appendix X1.2.Referenced Documents2.1 ASTM Standards:2E633 Guide fo
6、r Use of Thermocouples in Creep and Stress-Rupture Testing to 1800F(1000C)in AirE771 Test Method for Spontaneous Heating Tendency ofMaterials(Withdrawn 2001)33.Terminology3.1 Definitions:3.1.1 maximumspontaneousheatingtemperature,nmaximum temperature reached during spontaneous heatingunder the speci
7、fied test conditions.3.1.2 oil-based materials,nseed and nut oils or materialsthat contain such oils.3.1.3 spontaneous heating,nexothermic reaction of amaterial due to slow or incomplete reaction that results in atemperature rise above that of its surroundings(see TestMethod E771);also called self h
8、eating.3.2 Symbols:3.2.1 TDdifference between maximum spontaneous heat-ing temperature and control temperature.3.2.2 TSmaximum spontaneous heating temperature.3.2.3 TCcontrol temperature or maximum spontaneoustemperature measured over 1 h immediately preceding thebeginning of an experiment.4.Summary
9、 of Test Method4.1 A non-woven paper cloth is covered uniformly in 9.0mL of test material mixed with 0.25 mL of 6 to 10%manganese drier.This covered pad is then put in a smallstainless steel holder with air holes in the sides.This holder isplaced in a larger chamber,which is opened to the air from t
10、hetop and heated until peak temperature is reached.The maxi-mum spontaneous heating temperature inside the soaked papercloth is recorded with a K thermocouple and maximumtemperature recorder with the base temperature adjusted to 706 2C.5.Significance and Use5.1 This test method provides a means of a
11、ccelerating thetendency of a material toward spontaneous heating that mayeventually lead to a fire.It is applicable to liquids and pastes.5.2 The spontaneous heating behavior of an oil-based ma-terial is affected by such factors as the availability of oxygen,the amount of driers present,the degree o
12、f polymerization ofoils,the surface area of the cellulose material,measures toprevent heat dissipation,and the amount of oil in contact withcellulose material.The degree of spontaneous heating bearslittle relationship to the type of cellulose material to which anoil-based material comes in contact o
13、r whether or not oil1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.57 on Artist Paints and Related Materials.Current edition approved Dec.1,2015.Published December 2015.Orig
14、inallyapproved in 2000.Last previous edition approved in 2007 as D6801 07.DOI:10.1520/D6801-07R15.2For 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
15、Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 soaked materials are first air dried.Small amounts ofcontaminants,such as
16、oil paint,quartz dust,dirt or drier(forexample,materials that might be found on a dirty,oil-soakedrag),can act as catalysts for this reaction.46.Apparatus6.1 Constant Temperature Water Bathset so that the baseinternal temperature of the test materials is 70 6 2C,see Fig.1.6.2 K Thermocouple,as described in Guide E633.6.3 Maximum Temperature Recorder,which records maxi-mum spontaneous heating temperature during a specifiedinterval and is accurate to at least 60.3C and calibratedagainst NIST trace
