GB/T 39699-2020Rubber. Identification of polymers. Pyrolytic gas-chromatographic method using mass-spectrometric detection (English PDF)

Foreword

This standard is in accordance with GB/T

Drafting of the rules given in 1:1-2009:

The translation method used in this standard is equivalent to ISO

17257:2020 "Identification of Rubber Polymers by Pyrolysis Gas Chromatography-Mass Spectrometry":

The Chinese standards that have a consistent correspondence with the international standards cited in this standard are as follows:

---GB/T

3516-2006 Determination of rubber solvent extract (ISO

1407:1992, MOD);

---GB/T

5576-1997 Rubber and latex nomenclature (ISO

1629:1995, IDT):

This standard has made the following editorial changes:

---Added warning words:

--- Modify the format of the table in the appendix:

This standard was proposed by the China Petroleum and Chemical Industry Federation:

This standard is organized by the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC

35) Concentration:

Drafting organizations of this standard: Yiweiyi Rubber Research Institute Co:, Ltd:, Wanli Tire Co:, Ltd:, Anhui Jiatong Passenger Radial Tire

Co:, Ltd:, Beijing Physical and Chemical Analysis and Testing Center, Guangzhou Synthetic Materials Research Institute Co:, Ltd:, Double Coin Group Shanghai Tire Research Institute Co:, Ltd:

Company, Weihai Junle Tire Co:, Ltd:, Double Star Group Co:, Ltd:, Shandong Huasheng Rubber Co:, Ltd:, Sailun Group Co:, Ltd:,

Fengshen Tire Co:, Ltd:, Beijing Rubber Research Institute Rubber Tire Testing Technology Service Co:, Ltd:, Beijing Rubber Industry Research and Design Institute Co:, Ltd:

the company:

1 Scope

This standard specifies methods for identifying rubber types by analyzing rubber cracked products by pyrolysis gas chromatography/mass spectrometry:

This standard applies to raw rubber, vulcanized rubber or unvulcanized rubber: These rubbers can be a single rubber or two or more rubbers:

Rubber and rubber: This standard cannot be used to detect and identify certain types of rubber with a content of less than 10% in rubber:

The types of rubber identified in this standard are not limited to the rubbers given in Chapter 4:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

ISO

1407 Determination of rubber solvent extract (Rubber-Determination

of

solvent

extract)

ISO

1629 Rubber and latex nomenclature (Rubber

and

latices-Nomenclature)

3 Terms and definitions

No terms and definitions are listed in this document:

The website of the terminology database used in the standardization work maintained by ISO and IEC is as follows:

---ISO online browsing platform: https://www:iso:org/obp;

---IEC Electrical Engineering Encyclopedia: http://www:electropedia:org/:

4 Rubber classification

According to ISO

1629 is a grouping of rubber, but not limited to the following groups of rubber:

4:1 Group M

4:1:1 Chlorinated polyethylene (CM):

4:1:2 Chlorosulfonated polyethylene (CSM):

4:1:3 Ethylene-propylene copolymer (EPM) and ethylene-propylene-diene terpolymer (EPDM):

This standard cannot distinguish between these two types of rubber:

4:1:4 Fluorine rubber (FKM) with fluorine, perfluoroalkyl or perfluoroalkoxy substituents in the polymer chain:

This standard cannot distinguish between these rubbers:

4:2 Group O

4:2:1 Polyepichlorohydrin (CO), epichlorohydrin-ethylene oxide binary copolymer (ECO), epichlorohydrin-ethylene oxide-alkyl condensation

Glyceryl ether terpolymer (GECO):

17257:2020