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SAE AS81820 Bearings, Plain, Self-Aligning, Self-Lubricating, Low Speed Oscillation

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Product Code:SAE AS81820
Title:Bearings, Plain, Self-Aligning, Self-Lubricating, Low Speed Oscillation
Issuing Committee:Acbg Plain Bearing Committee
Scope:This standard covers plain spherical bearings which are self-aligning and self-lubricating by utilizing polytetrafluoroethylene (PTFE in a fabric composite or molded material that is bonded to the inner diameter surface of the race and when specified, to the bore diameter surface of the ball. These bearings are for use in the temperature range -65 to +325 掳F (-54 to +163 掳C).
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【英文标准名称】:StandardPracticeforExtractionofAdditivesinPolyolefinPlastics
【原文标准名称】:萃取聚烯烃塑料添加剂的标准实施规程
【标准号】:ASTMD7210-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D20.70
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:添加剂;萃取;塑料;聚烯烃
【英文主题词】:acceleratedsolventextraction;antistaticagents;BHEB;BHT;high-densitypolyethylene(HDPE);linearlow-densitypolyethylene(LLDPE);low-densitypolyethylene(LDPE);microwaveassistedextraction;phenolicantioxidants;phosphiteantioxidants
【摘要】:Separationandidentificationofadditivesusedinthemanufactureofpolyolefinplasticsisnecessaryinordertocorrelateperformancepropertieswithpolymercomposition.Thispracticeprovidesguidelinesforextractingphenolicantioxidants,phosphiteantioxidants,UVstabilizers,antistaticagents,andslipadditives,frommilledpolyolefinplastics.Waterbathshakersandsteam-refluxSoxhletextractiontechniqueshavealsobeenusedtosuccessfullyremoveadditivesfrompolyolefinplastics.1.1Thispracticecoversavarietyofextractiontechniquesforantioxidantandslipadditivesusedinpolyolefins.Typically,theextractedadditivesareseparatedandquantifiedusingachromatographictechniquesuchastheprocedureexplainedinTestMethodD6953.Chromatographicanalysisoftheextractsisnotincludedinthispractice.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:4P.;A4
【正文语种】:


基本信息
标准名称:埋地钢质管道牺牲阳极阴极保护设计规范
英文名称:Design specification of sacrifical anode for buried steel pipeline
中标分类:
ICS分类:
替代情况:SYJ 19-86 SYJ 20-86 被GB/T 21448-2008代替
发布部门:中国石油天然气总公司
发布日期:1997-07-17
实施日期:1998-01-01
首发日期:1900-01-01
作废日期:2008-08-01
出版社:石油工业出版社
出版日期:1900-01-01
页数:20页
适用范围

本规范适用于埋地及水中钢质管道牺牲阳极保护系统的设计。本规范不适用于海洋环境中牺牲阳极阴极保护。

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