SJ/T 9167.16-1993 聚合材料长时性能的评定
作者:标准资料网 时间:2024-05-26 22:05:44 浏览:9225
来源:标准资料网
基本信息
| 标准名称： | 聚合材料长时性能的评定 |
| 英文名称： | Polymeric materials long term property evaluations |
| 中标分类： |
化工 >>
化工综合 >>
技术管理 |
| 发布日期： | 1993-12-20 |
| 实施日期： | 1994-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2010-01-20 |
| 出版日期： | 1900-01-01 |
| 页数： | 26页 |
适用范围
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前言
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引用标准
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所属分类： 化工 化工综合 技术管理
MIL-STD-1568B (NOTICE-2), MILITARY STANDARD: MATERIALS AND PROCESSES FOR CORROSION PREVENTION AND CONTROL IN AEROSPACE WEAPONS SYSTEMS (18 JUL 1996) [S/S BY MIL-HDBK-1568]., MIL-STD-1568B(USAF) dated 12 October 1994 is hereby canceled. Future acquisition should refer to MIL-HDBK-1568, Materials and Processes for Corrosion Prevention and Control in Aerospace Weapons System. MIL-HDBK-1568 cannot be cited as a requirement. This document is to be used for guidance purposes only.【英文标准名称】:Ageingofthermalinsulationmaterials-Determinationofthelong-termchangeinthermalresistanceofclosed-cellplastics(acceleratedlaboratorytestmethods)
【原文标准名称】:热绝缘材料的老化.闭孔塑料耐热性能的长期变化量的测定(加速实验室试验方法)
【标准号】:BSISO11561-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-10-15
【实施或试行日期】:1999-10-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑物;定义;测定;老化试验;热力学性质;加速度试验;实验室试验;隔热材料;耐热性;隔热
【英文主题词】:Acceleratedtesting;Ageingtests;Buildings;Definition;Definitions;Determination;Laboratorytesting;Plastics;Thermalinsulatingmaterials;Thermalinsulation;Thermalresistance;Thermodynamicproperties
【摘要】:ThisInternationalStandardspecifiestwolaboratorytestmethods,basedonslicingandscalingtechniques,todeterminethelong-termchangesinthethermalresistanceofclosed-cell(normally90%)cellularplasticmaterialsthatcontaingaseswhich,throughdiffusionprocesses,affectthepropertiesofafoamwithtime.Usingstandardmethodsforthemeasurementofthermalresistance,methodAconsistsofperiodicmeasurementsperformedoverashorttimeintervalonthinspecimensconditionedinacontrolledambienttemperatureenvironment.Theresultsofrelativechangewithtimeareusedinconjunctionwithamathematicaltechniquetoderivethethermalresistanceofgreaterthicknessesofthematerialasafunctionoftime.MethodBdescribesasimpletesttodetermineaconservativedesignlife-timevalue(25yearsaridlonger)foranunfaced,closed-cell,cellularplasticproduct.Thismethodislimitedcurrentlytounfacedhomogeneousmaterials.Forthismethod,multiplespecimensofthecoreandsurfacesofmaterialswithvariationsintheslopeoftheprimarystagethermalresistivityandatimerelationshipoflessthan10%withinasampleareconsideredtobehomogeneous.Generally,productswithnaturalskinsorwithdensitydeviationsnormallyfoundwithsuchproductsmaybeconsideredacceptablefortestbythistechnique.
【中国标准分类号】:Q25
【国际标准分类号】:91_100_60
【页数】:26P;A4
【正文语种】:英语
