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DIN EN 302-3-2006 承重木结构用粘合剂.试验方法.第3部分:通过温度和湿度循环试验测定木纤维酸性腐蚀对横向拉伸强度的影响.德文版本EN302-3:2004+A1:2005

作者:标准资料网 时间:2024-05-06 20:52:35  浏览:9436   来源:标准资料网
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【英文标准名称】:Adhesivesforload-bearingtimberstructures-Testmethods-Part3:Determinationoftheeffectofaciddamagetowoodfibresbytemperatureandhumiditycyclingonthetransversetensilestrength;EnglishversionofDINEN302-3:2004+A1:2005
【原文标准名称】:承重木结构用粘合剂.试验方法.第3部分:通过温度和湿度循环试验测定木纤维酸性腐蚀对横向拉伸强度的影响.德文版本EN302-3:2004+A1:2005
【标准号】:DINEN302-3-2006
【标准状态】:现行
【国别】:德国
【发布日期】:2006-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:耐酸性;胶粘剂;氨基塑料;气候荷载;气候试验;组件;建筑;周期的;酸腐蚀;粘胶物;承载;潮气;苯酚;苯酚塑料;缩聚制品;建筑用木料;温度;抗拉强度;试验设备;试件;试验;木结构;横向拉伸强度;木材;木纤维;木材技术;木结构件
【英文主题词】:Acidresistance;Adhesives;Aminoplasts;Climaticloading;Climatictests;Components;Construction;Cyclic;Damagebyacid;Glue;Loadbearing;Moisture;Phenol;Phenolicplastics;Polycondensationproducts;Structuraltimber;Temperature;Tensilestrength;Testequipment;Testpieces;Testing;Timberconstruction;Transversetensilestrength;Wood;Woodfibres;Woodtechnology;Woodenstructuralpart
【摘要】:ThisPartofEN302specifiesamethodfordeterminingtheeffectonbondstrengthofdamagetowoodfibrescausedbytheactionofacidsfromtheadhesiveduringclimaticcycling.Itissuitableforthefollowingapplications:a)assessingthecomplianceofadhesiveswithEN301;b)forassessingthesuitabilityandqualityofadhesivesforload-bearingtimberstructures;c)fordetermingiftheadhesiveafterbondinghasadamaginginfluenceonthestrengthofthewoodduetochemicalaction.
【中国标准分类号】:G39
【国际标准分类号】:83_180
【页数】:12P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforMeasurementofAdenosineTriphosphateinWater-MiscibleMetalworkingFluids
【原文标准名称】:测定水溶性金属加工液中三磷酸腺苷的标准试验方法
【标准号】:ASTME2694-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E34.50
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:adenosinetriphosphate;ATP;bacteria;bioburden;biodeterioration;biomass;fungi;metalworking;microbialcontamination;microbiology;microorganisms
【摘要】:ThismethodmeasurestheconcentrationofATPpresentinthesample.ATPisaconstituentofalllivingcells,includingbacteriaandfungi.Consequently,thepresenceofATPisanindicatoroftotalmicrobialcontaminationinmetalworkingfluids.ATPisnotassociatedwithmatterofnon-biologicalorigin.MethodD4012validatedATPasasurrogateforculturablebacterialdata(GuideE1326).ThismethoddiffersfromMethodD4012inthatiteliminatesinterferencesthathavehistoricallyrenderedATPtestingunusablewithcomplexorganicfluidssuchasMWF.TheATPtestprovidesrapidtestresultsthatreflectthetotalbioburdeninthesample.Ittherebyreducesthedelaybetweentestinitiationanddatacapture,fromthe36hto48h(orlonger)requiredforculturablecoloniestobecomevisible,toapproximatelyfiveminutes.AlthoughATPdatacovarystronglywithculturedatainMWF,differentfactorsaffectATPconcentrationthanthosethataffectculturability.Culturabilityisaffectedprimarilybytheabilityofcapturedmicrobestoproliferateonthegrowthmediumprovided,underspecificgrowthconditions.Ithavebeenestimatedthatlessthan1%ofthespeciespresentinanenvironmentalsamplewillformcoloniesunderanygivensetofgrowthconditions.ATPconcentrationisaffectedby:themicrobialspeciespresent,thephysiologicalstatesofthosespecies,andthetotalbioburden(SeeAppendixX1).OneexampleofthespecieseffectisthattheamountofATPpercellissubstantiallygreaterforfungithanbacteria.Withinaspecies,cellsthataremoremetabolicallyactivewillhavemoreATPpercellthandormantcells.Thegreaterthetotalbioburden,thegreatertheATPconcentrationinasample.Thepossibilityexiststhattherinsestep(11.15)maynoteliminateallchemicalsubstancesthatcaninterferewiththebioluminescencereaction(11.39).ThepresenceofanysuchinterferencescanbeevaluatedbyperformingastandardadditiontestseriesasdescribedinAppendixX3.Anyimpactofinterferingchemicalswillbereflectedasbiasrelativetodataobtainedfromfluidthatdoesnotcontaininterferingchemicals.1.1Themethodprovidesaprotocolforcapturing,extractingandquantifyingtheadenosinetriphosphate(ATP)contentassociatedwithmicroorganismsfoundinwater-misciblemetalworkingfluids(MWF).1.2TheATPismeasuredusingabioluminescenceenzymeassay,wherebylightisgeneratedinamountsproportionaltotheconcentrationofATPinthesamples.Thelightisproducedandmeasuredquantitativelyasrelativelightunits(RLU)whichareconvertedbycomparisonwithanATPstandardandcomputationtopgATP/mL.1.3Thismethodisequallysuitableforuseinthelaboratoryorfield.1.4ThemethoddetectsATPconcentrationsintherangeof4.0pgATP/mLto400,000pgATP/mL.1.5Providinginterferencescanbeovercome,bioluminescenceisareliableandprovenmethodforqualifyingandquantifyingATP.ThemethoddoesnotdifferentiatebetweenATPfromdifferentsources,forexample,fromdifferenttypesofmicroorganisms,suchasbacteriaandfungi.1.6ThevaluesstatedinSIaretoberegardedasstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E39
【国际标准分类号】:75_100
【页数】:7P.;A4
【正文语种】:英语


基本信息
标准名称:压力容器法兰用非金属软垫片
中标分类: 机械 >> 通用机械与设备 >> 压力容器
替代情况:被JB 4704-1992代替
发布日期:
实施日期:2001-03-01
首发日期:
作废日期:
出版日期:
页数:3页
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所属分类: 机械 通用机械与设备 压力容器

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