ASTM_D_2584_-_11.pdf

Designation:D258411Standard Test Method forIgnition Loss of Cured Reinforced Resins1This standard is issued under the fixed designation D2584;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 indicates the year of last reapproval.Asuperscript epsilon()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 test method covers the determination of the ignitionloss of cured reinforced resins.This ignition loss can beconsidered to be the resin content within the limitations of 4.2.1.2 The values stated in SI units are to be regarded as thestandard.1.3 This standard is used to measure and describe theresponse of composite material to heat under controlledconditions,but does not by itself incorporate all of the factorsrequired for fire hazard or fire assessments of the compositematerials under actual fire conditions.1.4 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of whoever uses this standard to consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Summary of Test Method3.1 The specimen contained in a crucible is ignited andallowed to burn until only ash and carbon remain.Thecarbonaceous residue is reduced to an ash by heating in amuffle furnace at 565C(1050F),cooled in a desiccator,andweighed.4.Significance and Use4.1 This test method can be used to obtain the ignition lossof a cured reinforced resin sample.This test method can also beused to examine the fiber architecture of pultruded structuralshapes.4.2 If only glass fabric or filament is used as the reinforce-ment of an organic resin that is completely decomposed tovolatile materials under the conditions of this test and the smallamount of volatiles(water,residual solvent)that are potentiallypresent are ignored,the ignition loss can be considered to bethe resin content of the sample.4.2.1 This test method does not provide a measure of resincontent for samples containing reinforcing materials that loseweight under the conditions of the test or containing resins orfillers that do not decompose to volatile materials released byignition.5.Apparatus5.1 Crucible,platinum or porcelain,approximately 30-mLcapacity.5.2 Electric Muffle Furnace,capable of maintaining a tem-perature of 565 6 28C(1050 6 50F).6.Test Specimen6.1 A minimum of three specimens shall be tested for eachsample.NOTE2It is often convenient to use samples obtained from specimensthat have been tested for mechanical properties such as flexural or tensilestrength.Specimens obtained from these samples must be dry and thefractured areas removed,leaving square,unfrayed faces,before beingweighed and ignited.6.2 The specimen shall weigh approximately 5 g with amaximum size of 2.5 by 2.5 cm by thickness(1 by 1 in.bythickness).NOTE3Materials that have gross differences in the ratio of resin toreinforcement within an area as small as 2.5 by 2.5 cm(1 by 1 in.)mayrequire a larger specimen area than that listed in 6.2.If larger specimens1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-ting Plastics.Current edition approved Oct.15,2011.Published November 2011.Originallyapproved in 1967.Last previous edition approved in 2008 as D2584-08.DOI:10.1520/D2584-11.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 are utilized,it will be necessary to cut into approximately 2.5 by 2.5-cm(1 by 1-in.)pieces and place in a crucible of sufficient size to contain thespecimen.7.Conditioning7.1 ConditioningCondition the test specimens at 236 2C(73.4 6 3.6F)and 50 6 10%relative humidity for not lessthan 40 h prior to test in accordance with Procedure A ofPractice D618 for those tests where conditioning is required.Incases of disagreement,the tolerances shall be 61C(61.8F)and 65%relative humidity.The conditioning is not required ifthe test is only performed to examine the fiber architecture.7.2 Test ConditionsConduct tests in the