ISO/TR 9372-1993 塑料聚氨酯的基底材料甲苯二异氰酸盐中2.4-和2.6-异构体含量的红外光谱法测定
时间:2024-05-09 10:19:10 来源: 标准资料网 作者：标准资料网 阅读：9726
【英文标准名称】:Plastics;basicmaterialsforpolyurethanes;determinationoftheamountsof2,4-and2,6-isomersintoluenediisocyanatebyinfraredspectroscopy
【原文标准名称】:塑料聚氨酯的基底材料甲苯二异氰酸盐中2.4-和2.6-异构体含量的红外光谱法测定
【标准号】:ISO/TR9372-1993
【标准状态】:作废
【国别】:国际
【发布日期】:1993-04
【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/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;塑料;红外线光谱法;含量测定;基底材料;异氰酸酯;聚氨酯
【英文主题词】:polyurethane;isocyanates;infraredspectroscopy;plastics;basematerials;determinationofcontent;chemicalanalysisandtesting
【摘要】:Theprincipleofthemethodispreparingacyclohexanesolutionofthesampletobeanalyzed,measuringtheabsorbanceforthe810cmand782cmbandswhicharecharacteristicofthe1,2,4-and1,2,6-positionsonthearomaticring,andcalculatingtheabsorbanceratio.Appliestomixturescontaining5%to95%ofthe2,4-isomer.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语
Product Code:SAE ARP1802
Title:Selection and Application of Polytetrafluoroethylene (Ptfe Or Tfe) Backup Rings for Hydraulic and Pneumatic Fluid Power Applications
Issuing Committee:A-6c2 Seals Committee
Scope: The backup ring is defined. The various types designed for use with O-rings in MIL-G-5514 packing glands, and MS33566 and MS21344 universal fitting installations are described. Guidelines are included for selecting backup rings and backup ring materials, Backup ring installation procedures and precautions are described. The purpose of this report is to provide information that will aid design engineers and maintenance personnel in the selection and use of TFE backup rings (retainers) and backup ring materials for aircraft and aerospace hydraulic and pneumatic fluid power applications.
Rationale: The backup ring is defined. The various types designed for use with O-rings in MIL-G-5514 packing glands, and MS33566 and MS21344 universal fitting installations are described. Guidelines are included for selecting backup rings and backup ring materials, Backup ring installation procedures and precautions are described. The purpose of this report is to provide information that will aid design engineers and maintenance personnel in the selection and use of TFE backup rings (retainers) and backup ring materials for aircraft and aerospace hydraulic and pneumatic fluid power applications.
基本信息
| 标准名称： | 二硝基重氮酚工业水污染物排放标准 |
| 英文名称： | Effluent standards for pollutants from dinitrodiazophenol manufacturing industry |
| 中标分类： |
环境保护 >>
污染物排放标准 >>
污染物排放综合 |
| ICS分类： |
环保、保健与安全 >>
>>
污水
|
| 替代情况： | 被GB 14470.2-2002代替 |
| 发布日期： | 1984-05-18 |
| 实施日期： | 1985-03-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2003-07-01 |
| 起草单位： | 兵器工业部第六设计院 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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所属分类： 环境保护 污染物排放标准 污染物排放综合 环保 保健与安全 污水