ISO 2507-1-1995 热塑性塑料管材和管件维卡软化温度第1部分:一般试验方法
时间:2024-04-30 03:21:52 来源: 标准资料网 作者：标准资料网 阅读：8005
【英文标准名称】:Thermoplasticspipesandfittings-Vicatsofteningtemperature-Part1:Generaltestmethod
【原文标准名称】:热塑性塑料管材和管件维卡软化温度第1部分:一般试验方法
【标准号】:ISO2507-1-1995
【标准状态】:现行
【国别】:国际
【发布日期】:1995-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC138
【标准类型】:()
【标准水平】:()
【中文主题词】:软化点;维卡特软化温度;塑料管;维卡特;管道配件;热塑性;测定;试验;试验
【英文主题词】:Determination;Pipefittings;Plasticpipes;Softeningpoint;Testing;Tests;Thermoplasticity;Vicat;Vicatsofteningtemperatures
【摘要】:Themethodspecifiedisbasedondeterminingthetemperatureatwhichastandardindenter,underaforceof50N?1N,penetrates1mmintothesurfaceofatestpiececutfromthewallofapipeorfittingwhilethetemperatureisraisedataconstantrate.Isapplicableonlytothermoplasticsmaterialsforwhichitispossibletomeasurethetemperatureatwhichtherateofsofteningbecomesrapid.IsbasedonISO306:1994which,however,appliestomaterialsintheformofsheets.
【中国标准分类号】:G33
【国际标准分类号】:23_040_20;23_040_45
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:Environmentalmanagementsystems.Generalguidelinesonprinciples,systemsandsupporttechniques
【原文标准名称】:环境管理体系.原理,体系与技术支持的一般指南
【标准号】:BSENISO14004-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2004-11-16
【实施或试行日期】:2004-11-16
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:分类;通信;定义(术语);文献;环境;环境管理系统;环境管理;环境测试;指导手册;仪器;管理;组织;计划;污染控制;原则;质量管理;规范;系统
【英文主题词】:Classification;Communication;Definitions;Documentations;Environment;Environmentalmanagementsystems;Environmentalmanagements;Environmentaltesting;Guidebooks;Instruments;Management;Organization;Planning;Pollutioncontrol;Principles;Qualitymanagement;Specification;Systems
【摘要】:
【中国标准分类号】:Z04
【国际标准分类号】:13_020_10
【页数】:48P;A4
【正文语种】:英语
【英文标准名称】:Determinationoftheultimateaerobicbiodegradabilityofplasticmaterialsinanaqueousmedium-Methodbymeasuringtheoxygendemandinaclosedrespirometer
【原文标准名称】:水生介质中塑料材料极端好气菌生物降解性的测定.在一封闭呼吸器中测定氧需求的方法
【标准号】:BSISO14851-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-08-15
【实施或试行日期】:1999-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:有机化合物;质量;生物降解能力;试验;好气菌;塑料;微生物;需氧量;定义;测定
【英文主题词】:biodegradability;definitions;testing;microorganisms;organiccompounds;plastics;oxygendemand;quality;aerobicbacteria;determination
【摘要】:ThisInternationalStandardspecifiesamethod,bymeasuringtheoxygendemandinaclosedrespirometer,forthedeterminationofthedegreeofaerobicbiodegradabilityofplasticmaterials,includingthosecontainingformulationadditives.Thetestmaterialisexposedinanaqueousmediumunderlaboratoryconditionstoaninoculumfromactivatedsludge,compostorsoil.Ifanunadaptedactivatedsludgeisusedastheinoculum,thetestsimulatesthebiodegradationprocesseswhichoccurinanaturalaqueousenvironment;ifamixedorpre-exposedinoculumisused,themethodcanbeusedtoinvestigatethepotentialbiodegradabilityofatestmaterial.TheconditionsusedinthisInternationalStandarddonotnecessarilycorrespondtotheoptimumconditionsallowingmaximumbiodegradationtooccur,butthestandardisdesignedtodeterminethepotentialbiodegradabilityofplasticmaterialsorgiveanindicationoftheirbiodegradabilityinnaturalenvironments.Themethodenablestheassessmentofthebiodegradabilitytobeimprovedbycalculatingacarbonbalance(optional,seeannexE).Themethodappliestothefollowingmaterials:—Naturaland/orsyntheticpolymers,copolymersormixturesthereof.—Plasticmaterialswhichcontainadditivessuchasplasticizers,colorantsorothercompounds.—Water-solublepolymers.—Materialswhich,underthetestconditions,donotinhibitthemicroorganismspresentintheinoculum.Inhibitoryeffectscanbedeterminedusinganinhibitioncontrolorbyanotherappropriatemethod(seee.g.ISO8192).Ifthetestmaterialisinhibitorytotheinoculum,alowertestconcentration,anotherinoculumorapre-exposedinoculumcanbeused.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:30P.;A4
【正文语种】:英语