MIL-M-23127B (NOTICE 1), MILITARY SPECIFICATION: MILESTONE/COST PLAN AND MILESTONE PLAN (11 OCT 1983) [NO S/S DOCUMENT]., Specification MIL-M-23127B(SHIPS), dated 1 July 1966, and Amendment 3 thereto, dated 27 June 1970, are hereby canceled without replacement.
基本信息
标准名称: | 芳纶纤维、酚醛纤维编织填料 技术条件 |
英文名称: | Specification of polyamide fibre/phenolic fibre braided packing |
中标分类: |
机械 >>
通用零部件 >>
密封与密封装置 |
ICS分类: |
机械系统和通用件 >>
密封件、密封装置
|
替代情况: | 替代JB/T 7759-1995 |
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2008-02-01 |
实施日期: | 2008-07-01 |
首发日期: | |
作废日期: | |
提出单位: | 中国机械工业联合会 |
归口单位: | 机械工业填料静密封标委会 |
起草单位: | 合肥通用机电产品检测院 |
起草人: | 杨书益、熊微、王培洲 |
出版社: | 机械工业出版社 |
出版日期: | 2008-07-01 |
页数: | 6页 |
批文号: | 23038-2008 |
书号: | 15111·8963 |
适用范围
本标准规定了芳纶纤维、酚醛纤维编织填料的型号、技术要求、试验方法和检验规则等内容。
本标准适用于芳纶纤维、酚醛纤维浸渍取四氟乙烯乳液及润滑剂编织填料。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 机械 通用零部件 密封与密封装置 机械系统和通用件 密封件 密封装置
【英文标准名称】:StandardTestMethodforAcidNumberofPetroleumProductsbyPotentiometricTitration
【原文标准名称】:电位滴定法测定石油产品酸值的标准试验方法
【标准号】:ASTMD664-2009a
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acidnumber;B5;B10;B20;B100;biodiesel;biodieselblend;lubricants;petroleumproducts;potentiometric;strongacidnumber;titration;Acidnumber--petroleumproducts;Lubricants(fluid);Neutralizationnumbers
【摘要】:Newandusedpetroleumproducts,biodieselandblendsofbiodieselmaycontainacidicconstituentsthatarepresentasadditivesorasdegradationproductsformedduringservice,suchasoxidationproducts.Therelativeamountofthesematerialscanbedeterminedbytitratingwithbases.Theacidnumberisameasureofthisamountofacidicsubstanceintheoil,alwaysundertheconditionsofthetest.Theacidnumberisusedasaguideinthequalitycontroloflubricatingoilformulations.Itisalsosometimesusedasameasureoflubricantdegradationinservice.Anycondemninglimitsmustbeempiricallyestablished.Sinceavarietyofoxidationproductscontributetotheacidnumberandtheorganicacidsvarywidelyincorrosionproperties,thetestmethodcannotbeusedtopredictcorrosivenessofoilorbiodieselandblendsunderserviceconditions.Nogeneralcorrelationisknownbetweenacidnumberandthecorrosivetendencyofbiodieselandblendsoroilstowardmetals.1.1Thistestmethodcoversproceduresforthedeterminationofacidicconstituentsinpetroleumproducts,lubricants,biodieselandblendsofbiodiesel.1.1.1TestMethodA8212;Forpetroleumproductsandlubricantssolubleornearlysolubleinmixturesoftolueneandpropan-2-ol.Itisapplicableforthedeterminationofacidswhosedissociationconstantsinwaterarelargerthan10-9;extremelyweakacidswhosedissociationconstantsaresmallerthan10-9donotinterfere.Saltsreactiftheirhydrolysisconstantsarelargerthan10-9.Therangeofacidnumbersincludedintheprecisionstatementis0.1mg/gKOHto150mg/gKOH.1.1.2TestMethodB8212;Developedspecificallyforbiodieselandbiodieselblendswithlowacidityandslightlydifferentsolubility.Thistestmethodrequirestheuseofanautomatictitratorwithautomaticendpointseekingcapability.Note18212;Innewandusedoils,theconstituentsthatmaybeconsideredtohaveacidiccharacteristicsincludeorganicandinorganicacids,esters,phenoliccompounds,lactones,resins,saltsofheavymetals,saltsofammoniaandotherweakbases,acidsaltsofpolybasicacids,andadditionagentssuchasinhibitorsanddetergents.1.2Thetestmethodmaybeusedtoindicaterelativechangesthatoccurinoilduringuseunderoxidizingconditionsregardlessofthecolororotherpropertiesoftheresultingoil.Althoughthetitrationismadeunderdefiniteequilibriumconditions,thetestmethodisnotintendedtomeasureanabsoluteacidicpropertythatcanbeusedtopredictperformanceofoilunderserviceconditions.Nogeneralrelationshipbetweenbearingcorrosionandacidnumberisknown.Note28212;TheacidnumberobtainedbythisstandardmayormaynotbenumericallythesameasthatobtainedinaccordancewithTestMethodsD974andD3339.Therehasnotbeenanyattempttocorrelatethismethodwithothernon-titrationmethods.Note38212;AfewlaboratorieshavemadetheobservationthatthereisadifferenceinTestMethodD664resultswhenaqueousversusnonaqueousbuffersareused.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,......
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:10P.;A4
【正文语种】:英语