GB/T 21464: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21464-2025 | English | RFQ |
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Rubber - Determination of 5-ethylidenenorbornene (ENB) or dicyclopentadiene (DCPD) in ethylene-propylene-diene (EPDM) terpolymers
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GB/T 21464-2025
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| GB/T 21464-2008 | English | 234 |
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Rubber -- Determination of 5-Ethylideneonbornene (ENB) or Dicyclopentadiene (DCPD) in Ethylene-Propylene-Diene (EPDM) terpolymers
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GB/T 21464-2008
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Basic data | Standard ID | GB/T 21464-2025 (GB/T21464-2025) | | Description (Translated English) | Rubber - Determination of 5-ethylidenenorbornene (ENB) or dicyclopentadiene (DCPD) in ethylene-propylene-diene (EPDM) terpolymers | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 21464-2008 | GB/T 21464-2008: Rubber -- Determination of 5-Ethylideneonbornene (ENB) or Dicyclopentadiene (DCPD) in Ethylene-Propylene-Diene (EPDM) terpolymers
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber. Determination of 5-Ethylideneonbornene (ENB) or Dicyclopentadiene (DCPD) in Ethylene-Propylene-Diene (EPDM) terpolymers
ICS 83.060
G35
National Standards of People's Republic of China
GB/T 21464-2008/ISO 16565.2002
Rubber, ethylene - propylene - diene (EPDM)
Terpolymers of 5-ethylidene-norbornene (ENB)
Determination or dicyclopentadiene (of DCPD) content
(ISO 16565.2002, IDT)
Posted 2008-02-26 2008-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to international standard ISO 16565.2002 "Rubber ethylene - propylene - diene (EPDM) terpolymer 5-vinyl
Determination fork down norbornene (ENB) or dicyclopentadiene (DCPD) content "(in English).
This standard is equivalent to translate ISO 16565.2002.
For ease of use, this standard made the following editorial changes.
--- Number of formulas;
--- To make clearer graphics, ease of understanding, Figure 1, Figure 2, Figure 3 re-identification, will be split into 4 Figure 4 (a) and 4 (b),
And re-identify.
Appendix A of this standard is a normative appendix.
The standard proposed by China Petroleum and Chemical Corporation.
This standard by the National Standardization Technical Committee rubber and rubber products, synthetic rubber Technical Committee (SAC/TC35/SC6)
Centralized.
This standard was drafted. Lanzhou Petrochemical Research Institute of Chemical Co., Ltd. China Branch of Petroleum, China National Petroleum
Jilin Petrochemical Company Limited organic synthesis plant.
The main drafters of this standard. Wang Jin, Zhao Jialin, Wu Yi, Li Li.
This standard is the first release.
GB/T 21464-2008/ISO 16565.2002
± 1% or higher. The spectral resolution of the instrument 2cm-1. We recommend the use of deuterated sulfuric three GSH (DTGS) detector or use mercury cadmium telluride
(MCT) detector.
Spectrometer should have spectral overlay, average, subtraction and other processing functions. Water is the main source of the interference method. To obtain a satisfactory precision
Degree, we need to physically and electrically atomization method and extent of changes in the atomization minimum. A better approach is to use with dry
Dry gas purge and sample shuttle instruments, samples collected shuttle can alternately repeated single beam sample spectrum and the background spectrum (see Section 5
chapter). In addition, if no sample shuttle, carefully purged with dry nitrogen sample chamber can be satisfied with the measurement results. Full sweep
GB/T 21464-2008/ISO 16565.2002
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