GB/T 29189-2012Thermo gravimetric analysis (TGA) for determination of oxidation temperature and ash content of carbon nanotubes (English PDF)
碳纳米管氧化温度及灰分的热重分析法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2012
Implementation date
June 1, 2013
Scope
GB/T 29189-2012 is the English-translated version of 碳纳米管氧化温度及灰分的热重分析法.
GB/T 29189-2012 is the Chinese standard "Thermo gravimetric analysis (TGA) for determination of oxidation temperature and ash content of carbon nanotubes".
Its scope clause reads: This standard specifies the principles under air atmosphere carbon nanotubes measuring oxidation temperature and ash thermal gravimetric analysis, the use of instruments, sample registration Content preparation, measurement procedures, data processing and test reports.
This standard applies to the determination of the carbon nanotubes air oxidation characteristics and ash content of the carbon nanotubes using thermal gravimetric analysis. Its clauses include terms and definitions; instruments.
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Document preview — GB/T 29189-2012
National Standard of the People's Republic of China
- ICS
- 59.100.20
- Classification
- Q 50
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 5 Instruments
1 Scope
This standard specifies the principles under air atmosphere carbon nanotubes measuring oxidation temperature and ash thermal gravimetric analysis, the use of instruments, sample registration
Content preparation, measurement procedures, data processing and test reports.
This standard applies to the determination of the carbon nanotubes air oxidation characteristics and ash content of the carbon nanotubes using thermal gravimetric analysis.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6425-2008 term thermal analysis
GB/T 19619 nanomaterials term
3 Terms and Definitions
GB/T 19619 and GB/T 6425-2008 and defined the following terms and definitions apply to this document.
3.1 Temperature oxidation of carbon nanotubes
T0
Carbon nanotubes in air mass loss rate to the maximum value [| dm/dT | max] When the corresponding temperature.
3.2 Ash content
Rres
Quality and initial mass ratio of carbon nanotube thermal analyzer crucible residual material after full oxidation of carbon nanotubes.
Principle 4
TGA nanotubes refers to a sample of carbon nanotubes in an air atmosphere, with temperature changes in their physical and (or) chemical changes caused by the sample
Changes in quality, with a thermal analyzer recording quality and the relationship between the sample temperature, ie, thermal gravimetric (TGA) curve. For the quality of the differential temperature to give
Mass change rate (| dm/dT |) with variation of temperature, ie differential thermogravimetry (DTG) curve. Sample mass loss rate in air
Rate Max [| dm/dT | max] is defined as the temperature corresponding to the temperature of the test sample is oxidized, after full oxidation of carbon nanotubes remaining residue
Quality carbon nanotubes initial mass ratio is defined as the ash content of the carbon nanotubes.
5 Instruments
5.1 TGA
horizontal hot recommended weight (TGA) thermal analyzer. Horizontal TGA analyzer can avoid vertical chimney effect. The balance requires sensitivity better than 1µg, temperature range above 1000 °C, DTA sensitivity better than 0.01 °C, the amount of heat precision ± 2%, […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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