YY/T 0815-2010Standard test method for measurement of enthalpy of fusion, percent crystallinity and melting point of ultra-high-molecular-weight polyethylene by means of differential scanning calorimetry (English PDF)
差示扫描量热法测定超高分子量聚乙烯熔化焓、结晶度和熔点
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
December 27, 2010
Implementation date
June 1, 2012
Scope
YY/T 0815-2010 is the English-translated version of 差示扫描量热法测定超高分子量聚乙烯熔化焓、结晶度和熔点.
YY/T 0815-2010 is the Chinese standard "Standard test method for measurement of enthalpy of fusion, percent crystallinity and melting point of ultra-high-molecular-weight polyethylene by means of differential scanning calorimetry".
Its scope clause reads: This standard describes the melting enthalpy and melting point of ultra high molecular weight polyethylene (UHMWPE) methods, as well as the calculation of crystallinity.
The method can be used for powder, cured molding of the material, finished or used UHMWPE. The method can also be used for radiation Or chemical cross-linked UHMWPE melting enthalpy, melting point and the determination of crystallinity.
The method does not specify a crystallinity range or melting point for a particular application. The value expressed in international units is the standard value.
The values in parentheses are for reference only. This standard does not attempt to address all the security issues involved, even those related to its use. Indeed It is the responsibility of the user of this standard to establish appropriate safety and operational specifications and to apply the limits of management clearly before application. Its clauses include normative reference documents; symbols and definitions.
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Document preview — YY/T 0815-2010
National Standard of the People's Republic of China
- ICS
- 11.040.40
- Classification
- C 35
Issued by: National Medical Products Administration of the People's Republic of China
Contents
- Foreword
- 1 Scope
- 2 normative reference documents
1 Scope
This standard describes the melting enthalpy and melting point of ultra high molecular weight polyethylene (UHMWPE) methods, as well as the calculation of crystallinity.
The method can be used for powder, cured molding of the material, finished or used UHMWPE. The method can also be used for radiation
Or chemical cross-linked UHMWPE melting enthalpy, melting point and the determination of crystallinity.
The method does not specify a crystallinity range or melting point for a particular application.
The value expressed in international units is the standard value. The values in parentheses are for reference only.
This standard does not attempt to address all the security issues involved, even those related to its use. Indeed
It is the responsibility of the user of this standard to establish appropriate safety and operational specifications and to apply the limits of management clearly before application.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
ASTM D3418 differential scanning calorimetry for the determination of polymer transition temperature (Testmethodfortransitiontemperatures ofpolymersbydifferentialscanningcalorimetry)
Determination of enthalpy and crystallinity by differential scanning calorimetry (ASTME793) (Testmethodforenthalpiesoffusionand crystalizationbydifferentialscanningcalorimetry
ASTME967 differential scanning calorimeter and differential thermal analyzer temperature calibration method (Testmethodfortemperaturecali- brationofdifferentialscanningcalorimetersanddifferentialthermalanalyzers)
ASTME968 differential scanning calorimeter heat flow calibration procedures (Practiceforheatflowcalibrationofdiffer- entialscanningcalorimeters
ASTME1953 thermal analyzer and rheometer operating procedures (Practicefordescriptionofthermalanalysisand rheology app
3 symbols and definitions
The following symbols and definitions apply to this document.
3.1
deltaHf
The theoretical melting enthalpy (J/g) for the 100% material.
3.2
deltaHs
Quality of the test sample Normalized enthalpy of fusion (J/g).
3.3 Tp
Melting the endothermic melting point (° C).
......
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
Normative references
ASTM D3418 · ASTM E968
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