【英文标准名称】:EuropeanOrderingRules-OrderingofcharactersfromtheLatin,Greek,Cyrillicscripts;GermanversionENV13710:2000
【原文标准名称】:欧洲排序规则.拉丁、希腊和密码手迹的字符的排序
【标准号】:DINVENV13710-2007
【标准状态】:作废
【国别】:德国
【发布日期】:2007-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:ABC规则;附加标记;字母的;字母表;字符串;分类系统;分类;西里尔字符;数据;数据处理;数据布置;定义;嵌入式空格;图形显示字符;希腊字符;信息技术;拉丁字符;布置;字体;字母(符号);标记规则;准备;字母排列规则;专用字符;字码;字(数据)
【英文主题词】:ABCrules;Additionalmarks;Alphabetical;Alphabets;Characterstrings;Classificationsystems;Classifications;Cyrilliccharacters;Data;Datahandling;Datalayout;Definition;Embeddedblank;Graphiccharacters;Greekcharacters;Informationtechnology;Latincharacters;Layout;Lettering;Letters(symbols);Markingregulation;Preparation;Rulesforalphabeticalarrangement;Specialcharacters;Words;Words(data)
【摘要】:
【中国标准分类号】:A22
【国际标准分类号】:01_140_20;35_040
【页数】:56P.;A4
【正文语种】:德语
【英文标准名称】:StandardPracticeforOvenHeatStabilityofPoly(VinylChloride)Compositions
【原文标准名称】:聚(氯乙烯)合成物的烘箱热稳定性标准实施规程
【标准号】:ASTMD2115-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.15
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:heatstability;poly(vinylchloride);Thermalstability--plastics;Ovenheatstability;Poly(vinylchloride)(PVC)
【摘要】:Poly(vinylchloride)compositionsdegradebydiscolorationonprolongedexposuretoheat.Thedegreeofdiscolorationisrelatedtotheconditionofexposure,suchaslengthofperiodandtemperature.Whentheconditionsofexposurearefixedandcontrolled,thentherelativeresistancetodiscolorationduetoheatoftwoormorecompositionsisabletobedetermined.Theprecisionofheatstabilitytestingisalsodependentonthethicknessofthespecimensandthehistoryofheatexposurepriortotesting.Thispracticeallowsforcontrolorthereportingofthesevariables.Thispracticeisparticularlyapplicablefordetermininggrossdifferencesintheheatstabilitiesofpoly(vinylchloride)compositionsthataredetectableasacolorchange.Itisnotintendedtomeasureabsolutethermalstability.Althoughtheobservedcolorchangesmaybeevidenceofdegradation,moleculardegradationphenomenasuchaschain-scissionorcross-linkingmaynotbeidentifiable.Note28212;Whilediscolorationcausedbyexposuretoelevatedtemperatureiscommonlyregardedasevidenceofdegradationinpoly(vinylchloride)compositions,itmustbeborneinmindthatsomevinylcompositionsmayundergosubstantialchangeincolorwithoutappreciablelossofmechanicalstrength,chemicalresistance,etc.,whereasothersmayresistchangeincoloryetundergosubstantialchangeinotherproperties.Therefore,resistancetodiscolorationshouldnotbetakenassoleevidenceofthermalstability.Itisrecommendedthatthistestbesupplementedbyotherssuchastensilestrengthandelongation,impactstrength,anddeflectiontemperatureunderload(forrigidcompositions),Durometerhardness(fornonrigidcompositions),anddilutesolutionviscosity,andthatthetestresultsbeforeandafterovenexposurebecomparedtodeterminethedegreeofdegradationwhichhasbeenproducedineachofthepropertiesmeasured.Thispracticeisabletopredicttherelativediscolorationinprocessing,providedthatthecompositionsinquestionaretestedattherelativemaximumtemperaturesdevelopedinprocessing.Thispracticeisnotapplicabletomaterialsthatwillcross-contaminateduringovenexposure.1.1Thispracticelistsproceduresfordeterminingtherelativethermalstabilityofsheetormoldedpoly(vinylchloride)compoundsasindicatedbydiscolorationduetoexposuretoanelevatedtemperatureatcontrolledovenconditions.1.2Aspecimenpreparationtechniqueusingatwo-rollmillisprovidedforcompositionsthatarenotinmoldedorsheetedform.1.3Thispracticeisnotintendedforuseinpurchasingspecificationsbecausetheconditionsofprocessingplasticcompoundsvarywidely,andthedegreeofcorrelationofdataobtainedbythispracticetoprocessexposurehasnotbeendetermined.However,despitethislimitation,thispracticedoesyielddataofvalueinjudgingthecomparativeservicequalityofpoly(vinylchloride)compositions.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesaregivenforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;Thisstandardissimilarincontent,butnottechnicallyequivalenttoISO305x2013;1990.
【中国标准分类号】:G95
【国际标准分类号】:83_080_20
【页数】:3P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 13号车钩段修样板检定规程 |
| 中标分类： |
综合 >>
计量 >>
长度计量 |
| 替代情况： | 被JJG (铁道) 119.1-94代替 被JJG (铁道) 119.2-94代替 被JJG (铁道) 119.3-.4-94代替 |
| 发布日期： | |
| 实施日期： | 2004-06-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
适用范围
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前言
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目录
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引用标准
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所属分类： 综合 计量 长度计量