ISO 1600-1990 塑料乙酸纤维素利用热的不同循环在生产模制样品中光吸收量的测定

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【英文标准名称】:Plastics;celluloseacetate;determinationoflightabsorptiononmouldedspecimensproducedusingdifferentperiodsofheating
【原文标准名称】:塑料乙酸纤维素利用热的不同循环在生产模制样品中光吸收量的测定
【标准号】:ISO1600-1990
【标准状态】:现行
【国别】:国际
【发布日期】:1990-12
【实施或试行日期】:1990-12-01
【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】:试验;纤维素衍生物;乙酸纤维素;吸收;光;塑料
【英文主题词】:Absorption;Bushings;Celluloseacetate;Cellulosederivatives;Compacts(materials);Determination;Heating;Light;Measurement;Opticalabsorption;Plastics;Properties;Reagents;Testresults;Testspecimens;Testing;Tests
【摘要】:Thismethodisintendedforcelluloseacetatehavinganaceticacidyieldof54%?2.5%.Itmayalsobeapplicabletoothertransparentplasticswhicharenotstronglycolouredandwhichcanbemouldedunderthespecifiedconditions.Twomeasurementsofabsorption,oneattheredendandoneattheblueendofthevisiblespectrum,aresufficienttocharacterizetheabsorptionoflightbythematerial.Describesthepreparationofthematerial,twomethodsfortheincorporationofplasticizersanddiemouldingofthetestspecimen.Forthedeterminationoftheinitialopticaldensity,specimensgiventhesmallestpracticableamountofheatingareused.Theopticaldensityat25mmthicknessiscalculatedastheinitiallightabsorption.Thelightabsorptionafterfurtherheatingisobtainedbysimilarmeasurementsonspecimenspreparedusingalongerperiodofheatingduringmoulding.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:5P;A4
【正文语种】:英语