Designation:D1238–04c
StandardTestMethodfor
MeltFlowRatesofThermoplasticsbyExtrusion
Plastometer1
ThisstandardisissuedunderthefixeddesignationD1238;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.
ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.
1.Scope*
1.1Thistestmethodcoversmeasurementoftherateof
extrusionofmoltenresinsthroughadieofaspecifiedlength
anddiameterunderprescribedconditionsoftemperature,load,
andpistonpositioninthebarrelasthetimedmeasurementis
beingmade.
1.2ProcedureAisamanualcutoffoperationbasedontime
usedformaterialshavingflowratesthatfallgenerallybetween
0.15and50g/10min.ProcedureBisanautomaticallytimed