ISO 974-2000 塑料冲击脆化温度的测定

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【英文标准名称】:Plastics-Determinationofthebrittlenesstemperaturebyimpact
【原文标准名称】:塑料冲击脆化温度的测定
【标准号】:ISO974-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:铸件;测定;脆性;夯实试验;试样;模制材料;聚烯烃;冲击试验;冲击试验;冲击试验器;橡胶;试样制备;脆裂;高聚物;温度;试验设备;塑料
【英文主题词】:Brittleness;Castings;Determination;Embrittlement;Impacttesters;Impacttesting;Impacttests;Mouldings(shapedsection);Plastics;Polymers;Polyolefins;Poundingtests;Rubber;Specimenpreparation;Temperature;Testequipment;Testspecimens
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationofthetemperatureatwhichplasticsthatarenotrigidatnormalambienttemperatureexhibitbrittlefailureunderspecifiedimpactconditions.Asupplementarytechniqueusingnotchedspecimensdevelopsbrittlenessvaluesatamuchhighertemperaturethanareobservedforunnotchedspecimensofthesameplasticmaterial.Themethodutilizesastatisticaltechniquetoquantifythebrittlenessfailuretemperature.Provisionsaremadeforthetestingofsufficientspecimenstopermitthecalculationofthebrittlenesstemperatureonastatisticalbasis.Statisticaltechniqueshavebeendevelopedtoquantifythebrittlenesstemperatureasisdefinedin3.1.Themethodestablishesthetemperatureatwhichthereisa50%chanceoffailureineitherunnotchedornotchedspecimens.Thismethodhasbeenfoundusefulforspecificationpurposes,althoughitdoesnotnecessarilymeasurethelowesttemperatureatwhichthematerialmaybeused.Inthemeasurementofthebrittlenesstemperature,theprecisionofthemeasurementshouldpreferablybe±5CCattheworstwhenestablishingvaluesusedinmaterialspecifications.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:7P.;A4
【正文语种】:英语