GB/T 16583-2008
Identification of saturated rubbers in unsaturated rubbers (English Version)

Standard No.

GB/T 16583-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 16583-2008

Replace

GB/T 16583-1996 GB/T 19241-2003

Scope

Warning: Personnel using this standard should be familiar with formal laboratory operating procedures. This standard does not intend to address all safety issues that may arise from the use of this standard. It is the user's responsibility to formulate corresponding safety and health systems and ensure compliance with relevant national laws and regulations. This standard specifies two test methods for identifying saturated rubber in unsaturated rubber. Method A is an ozone oxidation method, and method B is an acid digestion method. This standard applies to raw rubber, unvulcanized rubber and vulcanized rubber. The results obtained by the two methods are not comparable. Limitations of this standard: Method A is to contain a small amount of saturated rubber (butyl rubber, chlorinated butyl rubber, bromine rubber, etc.) in a large amount of unsaturated rubber (natural rubber, butadiene rubber, isoprene rubber, etc.) butyl rubber and ethylene-propylene copolymers: ethylene-propylene rubber, ethylene-propylene-diene rubber). Method A is applicable to the determination of isobutylene-isoprene in blends containing one or more of the following rubbers (isoprene rubber, natural rubber, styrene-butadiene rubber, butadiene rubber, nitrile rubber, neoprene rubber) Presence of one or a blend of ethylene copolymers (butyl rubber, chlorinated butyl rubber, brominated butyl rubber) and ethylene-propylene copolymers (ethylene propylene rubber, EPDM rubber). Method A is not applicable to mixed rubbers containing one or more compounding agents, mixtures of polyolefins, paraffins or chlorinated paraffins that cannot be completely extracted by a mixed solvent of methyl ethyl ketone and ethanol, or thermoplastics that cannot be completely decomposed by ozone. elastomer. Method B is suitable for the identification of isobutylene in single or combined unsaturated rubbers, such as polyisoprene, butadiene-styrene copolymer, various butadiene-styrenenitrile copolymers and polychloroprene blends - Isoprene copolymers (butyl rubber, chlorobutyl rubber, bromobutyl rubber) and ethylene-propylene copolymers (EPDM, EPDM). Method B is not suitable for compounds containing low molecular weight polyethylene or polystyrene.

GB/T 16583-2008 Referenced Document

• GB/T 3516 Rubber. Determination of solvent extract
• GB/T 7764 Rubber indentification—Infrared spectrometric method*， 2017-07-12 Update
• HG/T 3837 Rubber.Determination of total hydrocarbon.Pyrolytic method
• ISO 7270:1987 Rubber; Identification of polymers (single polymers and blends); Pyrolytic gas chromatographic method

GB/T 16583-2008 history

• 2008 GB/T 16583-2008 Identification of saturated rubbers in unsaturated rubbers
• 1996 GB/T 16583-1996 Rubbers saturated--Identification in unsaturated rubbers--Part 1: by acid digestion

GB/T 16583-2008 Identification of saturated rubbers in unsaturated rubbers has been changed from GB/T 19241-2003 Identification of saturated rubbers in unsaturated rubbers--By ozonolysis.