【英文标准名称】:Rubber,vulcanizedorthermoplastic-Determinationofcompressionset-Part1:Atambientorelevatedtemperatures
【原文标准名称】:硫化或热塑性橡胶.压缩永久变形的测定.第1部分:室温或更高温度
【标准号】:ISO815-1-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-02
【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/TC45
【标准类型】:()
【标准水平】:()
【中文主题词】:室温;压缩永久变形;压缩测试;压缩试验;测定;弹性体;材料测试;测量;塑料;特性;橡胶;应变;温度;测试;测试条件;热塑性聚合物;硫化橡胶
【英文主题词】:Ambienttemperature;Compressionset;Compressiontesting;Compressiontests;Determination;Elastomers;High-temperaturetesting;Materialstesting;Measurement;Plastics;Properties;Rubber;Strain;Temperature;Temperaturemeasurement;Testing;Testingconditions;Thermoplasticpolymers;Vulcanizedrubber
【摘要】:ThispartofISO815specifiesmethodsforthedeterminationofthecompressionsetcharacteristicsofvulcanizedandthermoplasticrubbersatambientorelevatedtemperatures.Themethodsareintendedtomeasuretheabilityofrubbersofhardnesswithintherange10IRHDto95IRHDtoretaintheirelasticpropertiesatspecifiedtemperaturesafterprolongedcompressionatconstantstrain(normally)underoneofthealternativesetsofconditionsdescribed.Forrubberofnominalhardness80IRHDandabove,alowercompressionstrainisused:foranominalhardnessfrom80IRHDto89IRHDandforanominalhardnessfrom90IRHDto95IRHD.NOTE1Whenrubberisheldundercompression,physicalorchemicalchangescanoccurthatpreventtherubberreturningtoitsoriginaldimensionsafterreleaseofthedeformingforce.Theresultisaset,themagnitudeofwhichdependsonthetimeandtemperatureofcompressionaswellasonthetimeandtemperatureofrecovery.Atelevatedtemperatures,chemicalchangesbecomeincreasinglymoreimportantandleadtoapermanentset.NOTE2Short-timecompressionsettests,typicallyfor,atelevatedtemperaturesarecommonlyusedasameasureofthestateofcure,ameansofmaterialclassificationandaspecificationtoensurethequalityofacompound.Longertests,typicallyfor,atelevatedtemperaturestakeaccountoftheeffectofageingandareoftenusedtopredictserviceperformance,includingthatofsealingmaterials.Short-timetestsatambienttemperatureshowmainlytheeffectofphysicalchanges(re-orientationofthemolecularchainsandthefillers).
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:10P;A4
【正文语种】:英语