GB/T 12626.2-1990 硬质纤维板,技术要求

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基本信息
标准名称:硬质纤维板,技术要求
英文名称:Hard fibreboard-Technical requirement
中标分类: 农业、林业 >> 林业 >> 人造板
ICS分类: 木材技术 >> 木基板材 >> 纤维和刨花板
替代情况:替代GB 1923-1980;被GB/T 12626.2-2009代替
发布部门:国家技术监督局
发布日期:1990-01-02
实施日期:1991-10-01
首发日期:1990-12-26
作废日期:2009-12-01
主管部门:国家林业局
归口单位:全国人造板标准化技术委员会
起草单位:中国林科院木材所
出版日期:1900-01-01
页数:3页
适用范围

本标准规定了硬质纤维板的技术要求。本标准适用于无特殊加工处理的硬质纤维板,不适用于特殊加工处理的硬质纤维板,如防火、防腐、防霉、浮雕、异形及表面装饰等硬质纤维板。

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所属分类: 农业 林业 林业 人造板 木材技术 木基板材 纤维和刨花板
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【英文标准名称】:StandardPracticeforEvaluatingthePerformanceofDiffusiveSamplers
【原文标准名称】:评价扩散采样器性能的标准实施规程
【标准号】:ASTMD6246-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-01-01
【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】:D22.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:accuracy;airmonitoring;bias;concentration;diffusive;evaluation;gases;passive;performance;precision;samplingandanalysis;samplers;tests;uncertainty;vapors;workplaceatmospheres;Airmonitoring;Concentration(ofelements);
【摘要】:Gasorvaporsamplingisoftenaccomplishedbyactivelypumpingairthroughacollectionmediumsuchasactivatedcharcoal.Problemsassociatedwithapumpx2013;inconvenience,inaccuracy,andexpensex2013;areinextricablefromthistypeofsampling.Thealternativecoveredbythispracticeistousediffusionformovingthecompoundofinterestontothecollectionmedium.Thisapproachtosamplingisattractivebecauseoftheconvenienceofuseandlowtotalmonitoringcost.However,previousstudieshavefoundsignificantproblemswiththeaccuracyofsomesamplers.Therefore,althoughdiffusivesamplersmayprovideaplethoraofdata,inaccuraciesandmisuseofdiffusivesamplersmayyetaffectresearchstudies.Furthermore,workerprotectionsmaybebasedonfaultyassumptions.Theaimofthispracticeistocountertheuncertaintiesindiffusivesamplingthroughachievingabroadlyacceptedsetofperformancetestsandacceptancecriteriaforprovingtheefficacyofanygivendiffusivesamplerintendedforuse.1.1Thispracticecoverstheevaluationoftheperformanceofdiffusivesamplersofgasesandvaporsforuseoversamplingperiodsfrom4to12handforwindspeedslessthan0.5m/s.Suchsamplingperiodsandwindspeedsarethemostcommonintheindoorworkplacesetting.Thispracticedoesnotapplytostaticorareasamplinginwindspeedslessthan0.1m/s,whendiffusionoutsidethesamplermaydominateneededconvectionfromtheambientairtothevicinityofthesampler.Givenasuitableexposurechamber,thepracticecanbeextendedtocoversampleruseforothersamplingperiodsandconditions.Theaimistoprovideaconcisesetofexperimentsforclassifyingsamplersprimarilyinaccordancewithasinglesampleraccuracyfigure.Accuracyisdefined(3.2.1)inthisstandardsoastotakeintoaccountbothimprecisionanduncorrectedbias.Accuracyestimatesrefertoconditionsofsamplerusewhicharenormallyexpectedinaworkplacesetting.Theseconditionsmaybecharacterizedbythetemperature,atmosphericpressure,humidity,andambientwindspeed,noneofwhichmaybeconstantoraccuratelyknownwhenthesamplerisusedinthefield.Futhermore,theaccuracyaccountsfortheeffectsofdiffusivelossofanalyteontheestimationoftime-weightedaveragesofconcentrationswhichmaynotbeconstantintime.Asidefromaccuracy,thesamplersaretestedforcompliancewiththemanufacturer''sstatedlimitsoncapacity,possiblyinthepresenceofinterferingcompounds.1.2Thispracticeisanextensionofpreviousresearchondiffusivesamplers(1-14)aswellasPracticesD4597,D4598,D4599,andMDHS27.Anessentialadvancehereistheestimationofsampleraccuracyunderactualconditionsofuse.Futhermore,thecostsofsamplerevaluationarereduced.1.3Knowledgegainedfromsimilaranalytesexpeditessamplerevaluation.Forexample,interpolationofdatacharacterizingthesamplingofanalytesatseparatedpointsofahomologousseriesofcompoundsisrecommended.Atpresenttheprocedureof(9)issuggested.Followingevaluationofasamplerinuseatasinglehomologousseriesmemberaccordingtothepresentpractice,highermolecularweightmemberswouldreceivepartialvalidationsconsideringsamplingrate,capacity,analyticalrecovery,andinterferences.Thetestfordiffusiveanalytelosscanbeomittediftheeffectisfoundnegligibleforagivensampleroranalyteseries.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurportt......
【中国标准分类号】:C70
【国际标准分类号】:13_040_30
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Environmentaltesting--Part2:Tests--TestFc:Vibration(sinusoidal)
【原文标准名称】:环境试验.第2部分:试验.试验Fc:振动(正弦)
【标准号】:JISC60068-2-6-1999
【标准状态】:作废
【国别】:日本
【发布日期】:1999-02-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonElectricityTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:环境试验;电子设备及元件;振动试验;电气设备;电气元件
【英文主题词】:environmentaltesting;vibrationtesting;;;
【摘要】:この規格は,供試品が規定の厳しさの正弦波振動に耐える能力を決定するための標準的な試験手順を規定する。
【中国标准分类号】:A21
【国际标准分类号】:19_040;29_020
【页数】:30P;A4
【正文语种】:日语