【英文标准名称】:StandardTestMethodforEffectsofHeatAgingonWeightLoss,Cracking,andChalkingofElastomericSealants
【原文标准名称】:热老化对弹性填缝料重量损失、破裂及粉化影响的标准试验方法
【标准号】:ASTMC792-2004(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:C24.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:chalking;compound;cracking;elastomericsealants;heataging;non-sagsealants;self-levelingsealant;weightloss;Acceleratedaging/testing--elastomericsealants;Appearanceofmaterials;Chalking;Cracking--sealants;Elastomericseals/sealants
【摘要】:Weightlossthroughvolatilizationofcomponentsofasealantinabuildingjointmayaffectsealantappearancebecauseofshrinkageandsealantperformancebecauseofthelossoffunctionalsealantcomponents.Exposuretohigh-temperatureenvironmentswillacceleratethelossofvolatiles.Thistestmethodmeasuresweightloss.Itcanbeusedincombinationwithaknowledgeofsealantdensitytoestimateshrinkage.Inaddition,whencomparedtosealanttheoreticalweightsolids,itprovidesanestimateoftheextenttowhichfunctionalsealantcomponentscanbevolatilizedwhenexposedtohighservicetemperatures.Substantiallossesofthistypemayhelppredictearlyfailuresindurability.Also,developmentofcracksorchalking,orboth,lessenssealantservicelife.However,asealantthatdevelopsnocracksorchalking,orlowweightlossinthistestmethod,doesnotnecessarilyassuregooddurability.1.1Thistestmethodcoversalaboratoryprocedurefordeterminingtheeffectsofheatagingonweightloss,cracking,andchalkingofcured-in-placeelastomericjointsealants(single-andmulticomponent)foruseinbuildingconstruction.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3ThereisnoknownISOequivalenttothistestmethod.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:Fruitandvegetablejuices-Enzymaticdeterminationofaceticacid(acetate)content-NADspectrometricmethod;GermanversionEN12632:1999
【原文标准名称】:果汁和蔬菜汁.醋酸(醋酸盐)含量的酶催化测定.NAD的分光光度测定
【标准号】:EN12632-1999
【标准状态】:现行
【国别】:
【发布日期】:1999-04
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分析方法;水果汁;含量测定;食品;试验报告;数学计算;化学分析和试验;试验;乙酸酯;分光光度法;乙酸;蔬菜汁;汁(食品);饮料;饮料;非酒精饮料;食品检验;酶催化方法
【英文主题词】:Acetatecontent;Acetates;Aceticacid;Beverages;Chemicalanalysisandtesting;Determinationofcontent;Drinks;Enzymaticmethods;Foodinspection;Foodproducts;Fruitjuices;Investigations;Juices(food);Mathematicalcalculations;Methodsofanalysis;Non-alcoholicbeverages;Spectrophotometry;Testing;Vegetablejuices
【摘要】:
【中国标准分类号】:X51
【国际标准分类号】:67_160_20
【页数】:8P.;A4
【正文语种】:英语