【英文标准名称】:Sportsandgymnasticequipment;trampolins,5,20m3,05m,dimensions,requirementsandtesting
【原文标准名称】:体育和体操器械.蹦床.5.20米×3.05米.尺寸.要求和检验
【标准号】:DIN7918-2-1979
【标准状态】:作废
【国别】:德国
【发布日期】:1979-10
【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】:体操器材;封盖物;支架;系固;失火跳楼用布;尺寸;降解;安全工程;规范(审批);作标记;体育器材;材料;公差
【英文主题词】:gymnasticequipment;jumpingsheets(firerescue);safetyengineering;marking;dimensions;tolerances(measurement);materials;specification(approval);covers;degradation;racks;guying;sportsequipment
【摘要】:
【中国标准分类号】:Y55
【国际标准分类号】:97_220_30
【页数】:3P;A4
【正文语种】:德语


【英文标准名称】:Plastics-Phenolicresins-Separationbyliquidchromatography
【原文标准名称】:塑料.酚醛树脂.用液体色谱法分离
【标准号】:BSENISO11401-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-10-15
【实施或试行日期】:1998-10-15
【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】:化学分析和试验;热固性聚合物;数据表示;试验条件;酚醛树脂;塑料;液相色谱法;凝胶色谱法;色谱法;分离法(化学分析);柱色谱法;试样制备;高聚物
【英文主题词】:Chemicalanalysisandtesting;Chromatography;Definition;Definitions;Determinationofcontent;Liquidchromatography;Materialstesting;Paints;Phenolicresins;Plastics;Separationprocesses;Testing
【摘要】:1ThisInternationalStandardspecifieschromato-graphicmethodsfortheseparationofphenolicresinsintotheircomponentcompounds.Separationtakesplaceaccordingtomolecularweightand/orpolarity.Therearevariousliquidchromatographicmethods:A:Gel-permeationchromatographyB:High-performanceliquidchromatographyonpolarcolumnsC:High-performanceliquidchromatographyonnon-polarcolumnsItispossibletoseparateaphenolicresinintoitscomponentsaccordingtomolecularsizeusingmethodA(gel-permeationchromatography).Whereasfreephenolandthesumofthedihydro-xydiphenylmethanes(innovolaks)andvariousmethylolphenols(inresols)arequantitativelysepar-atedinthisprocedure,high-molecular-weightcompo-nentsoftheresinsareonlyincompletelyseparatedduetothemultitudeofisomers.MethodsBandC(high-performanceliquidchroma-tography)separatethecompoundsintheresinac-cordingtomolecularweightandpolarity.Molecular-weighteffectspredominateonpolarsta-tionaryphases(methodB),andtheeffectofpolarityonnon-polarstationaryphases(methodC).Thesemethodsalsoallowquantitativedeterminationofin-dividuallow-molecular-weightresincomponents.Be-causeofthedifferentresinsolubilities,methodBismoresuitablefornovolaksandmethodCforresols.2Themethodsareapplicabletophenolicresinsthataresolubleinthesolventsandsolventblendsused.3Thistestisusefulforcharacterizationofpro-ductsandforresearch.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:14P;A4
【正文语种】:英语