BS 5970-1992 温度范围从-100℃至+870℃的管道工程及设备隔热的实施规程

上一篇: BS 4773 Sec.1.1-1992 空气分配系统用空气终端设备的试验与评价方法.第1部分:空气动力试验.第1节:在实验室条件下的试验
下一篇: BS 1722-14-1992 栅栏.第14部分:开式网眼钢板栅栏

Product Code:SAE J1995
Title:Engine Power Test Code-Spark Ignition and Compression Ignition- Gross Power Rating
Issuing Committee:Engine Power Test Code
Scope: This SAE Standard has been adopted by SAE to specify: a.) A basis for gross engine power rating, b.) Reference inlet air and fuel supply test conditions, c.) A method for correcting observed power to reference conditions, and d.) A method for determining gross full load engine power with a dynamometer. This test code document is applicable to both four- stroke and two-stroke spark ignition (SI) and compression ignition (CI) engines, naturally aspirated and pressure charged, with and without charge air cooling. This document does not apply to aircraft or marine engines. This test code supersedes those portions of SAE J1349 dealing with gross power rating. Standard CI diesel fuel specifications are range mean values for Type 2-D EPA test fuel per Title 40, Code of Federal Regulations, Part 86.1313-87. The corresponding test code for net power rating is SAE J1349. The document for mapping engine performance is SAE J1312. ISO 2534 (1972) differs from SAE J1995 in several areas, among which are most important are: a) This document is not limited to road vehicles; b) This document requires inlet fuel temperature be controlled to 40 °C on CI engines; c) This document includes a reference fuel specification and requires that engine power be corrected to that specification on all CI and certain SI engines; d) This document includes a different procedure for testing engines with a laboratory charge air cooler (ISO method optional); and e) This document includes a different procedure for correcting power to reference atmospheric conditions on turbocharged CI engines. Complete correlation has not been established with ISO 3046. It is expected that this power test code will eventually align with ISO 1585 and ISO 2534.【英文标准名称】:Gelpermeationchromatography(GPC)-Part2:N,N-Dimethylacetamide(DMAC)aselutionsolvent
【原文标准名称】:凝胶渗透色谱法(GPC).第2部分:用N,N-二甲基乙酰胺(DMAC)作洗脱溶剂
【标准号】:DIN55672-2-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-06
【实施或试行日期】:
【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】:校正;化学分析和试验;色谱法;覆层材料;覆层;数据采集;定义;含量测定;二甲基乙酰胺;洗脱能力;凝胶渗透色谱法;GPC;仪器;试验;液相色谱法;测量;测量技术;摩尔质量;涂料;渗透;塑料;聚合物;试样制备;试验设备;试验报告;测试
【英文主题词】:Calibration;Chemicalanalysisandtesting;Chromatography;Coatingmaterials;Coatings;Dataacquisition;Definition;Definitions;Determinationofcontent;Dimethylacetamide;Eluatability;Gelpermeationchromatography;GPC;Instruments;Investigations;Liquidchromatography;Measurement;Measuringtechniques;Molarmass;Paints;Permeation;Plastics;Polymers;Specimenpreparation;Testequipment;Testreports;Testing
【摘要】:Thisstandarddescribesthedeterminationofthemolecularweightdistribution,number-averagemolecularweightMrandweight-averagemolecularweightMwofpolymersthataresolubleinDMAC(N,N-dimethylacetamide)bygelpermeationchromatography(GPC).Itispossiblethat,inspiteofthegoodrepeatabilityofthechromatogramsobtained,thismethodcannotbeusedwithcertainpolymertypesbecauseofspecificinteractions(e.g.adsorption)withinthesample/eluent/-columnsystem.Themethodisnotanabsoluteoneandrequirescalibrationwithcommerciallyavailableunbranchedpolymethylmethacrylatestandardsthathavebeencharacterizedbyindependentabsolutemethods.Theresultsforsamplesofpolymersotherthanpolymethylmethacrylatearethereforeonlycomparablewithingroupsofsamplesofthesametype.TheconditionsspecifiedinthisstandardarenotsuitablefortheGPCanalysisofpolymersampleswithMwvaluesgreaterthan10~6g/mol(seeAnnexC).Nocorrectionmethods(e.g.fortheeliminationofpeakbroadening)areincludedinthisstandard.Ifabsolutemolecularweightvaluesarerequired,anabsolutemethod(e.g.membraneosmometryforMnorlightscatteringforMw)shallbeused.
【中国标准分类号】:G63
【国际标准分类号】:71_040_50
【页数】:28P.;A4
【正文语种】:英语