SAE AS39029/83 Contacts, Electrical Connector, Pin, Crimp Removable (for MIL-C-28840 Connectors)
时间:2024-05-19 21:29:45 来源: 标准资料网 作者：标准资料网 阅读：8575
Product Code:SAE AS39029/83
Title:Contacts, Electrical Connector, Pin, Crimp Removable (for MIL-C-28840 Connectors)
Issuing Committee:Ae-8c1 Connectors Committee
Scope:No scope available.
【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
【英文标准名称】:Safetyrulesfortheconstructionandinstallationoflifts-Part1:Electriclifts(includesCorrigendumAC:1999);GermanversionEN81-1:1998+AC:1999
【原文标准名称】:升降机建造和安装的安全规则.第1部分:电动升降机
【标准号】:DINEN81-1-2000
【标准状态】:作废
【国别】:德国
【发布日期】:2000-05
【实施或试行日期】:2000-05-01
【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】:物料搬运设备;客用电梯;验收(鉴定);提升设备;货用升降机;载人升降机;自动回转送货机;货用电梯;安装;安装;试验;装置;升降机;安全要求;装配;检验;安全;设计;规范(验收);电的;提升机;电驱动装置;定义;定义;安全措施;电气设备;安全工程;摘录
【英文主题词】:Acceptance(approval);Baskets;Capacitiveloads;Definitions;Design;Doors;Electrical;Electricalequipment;Electrically-operateddevices;Emergencylimitswitches;Engines;Excerpt;Goodshoists;Goodslifts;Hoists;Inspection;Installation;Installations;Latches;Liftingequipment;Lifts;Lightingsystems;Maintenance;Marking;Materialshandlingequipment;Mounting;Operation;Passengerhoists;Passengerlifts;Riskofstumbling;Rooms;Rules;Safety;Safetycomponents;Safetyengineering;Safetymeasures;Safetyrequirements;Servicelifts;Shafts;Signs;Specification(approval);Testing;Ventilation
【摘要】:
【中国标准分类号】:Q78
【国际标准分类号】:91_140_90
【页数】:91P.;A4
【正文语种】:德语