ASTM D4072-23由美国材料与试验协会 US-ASTM 发布于 2023-10-01。
ASTM D4072-23在国际标准分类中归属于: 75.140 石蜡、沥青材料和其他石油产品。
ASTM D4072-23 焦油和沥青中甲苯不溶物(TI)含量的标准试验方法的最新版本是哪一版?
最新版本是 ASTM D4072-23 。
1.1 This test method covers the determination of tolueneinsoluble matter (TI) in tar and pitch. 1.2 Since this test method is empirical, strict adherence to all details of the procedure is necessary. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard information, see Section 8. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
按其软化点高低分为低温、中温和高温沥青三种。中温沥青产率为煤焦油的54-56%。煤沥青的组成极为复杂,与煤焦油的性质及杂原子的含量有关,又受炼焦工艺制度和煤焦油加工条件的影响。表征煤沥青特性的指标很多,如沥青软化点、甲苯不溶物(TI)、喹啉不溶物(QI)、结焦值和煤沥青流变性等。 煤沥青在炭素工业中作为粘结剂和浸渍剂使用,其性能对炭素制品生产工艺和产品质量影响极大。...
甲苯不溶物测定仪 产品概述 依据GB/T2292国家标准设计制作,试样与砂混匀(煤沥青类)或用甲苯浸渍(煤焦油类),然后用热甲苯在滤纸筒中萃取,干燥并称量不溶物。 主要部件选用进口元器件,采用陶瓷纤维炉内热式加热方法,具有无明火、安全环保、加热升温速度快、美观大方、温度可控可调等优点。解决了老式方法采用电热套加热,萃取速度达不到每分钟一次的缺点。 ...
是由冶金部焦化产品标准化技术归口单位监制的自动计数仪器。该仪器主要用于国家标准《焦化产品甲苯不溶物(TI)含量的测定方法》中,与甲苯不溶物测定仪配套使用,能准确地自动记录甲苯萃取的次数,到达萃取终点时,仪器能自动报警,提示操作人员停止萃取,使萃取终点得到定量控制,保证了测定值真实可靠。 使用方法接通电热套电源,给烧瓶内的甲苯加热。将光电探头夹到抽提筒的回流管下部(见图 1),接通计数仪的电源。...
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