GB/T 13646-2013 (English Version) PDF

Standard No.: GB/T 13646-2013
Language: Chinese, Available in English version
Release Date: 2013
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 13646-2013
Replace: GB/T 13646-1992

Scope: This standard specifies the method for the determination of styrene content in styrene-butadiene rubber (SBR) by spectrophotometer. This standard applies to the determination of styrene content in styrene-butadiene rubber reinforced with styrene homopolymer. This standard applies to the determination of styrene content in block copolymers with a styrene content not higher than 50% (mass fraction). This standard applies to blended vulcanizates of SBR and other polymers (NR, BR, IR and CR). If the styrene content of SBR in the blend is known, and the remaining components do not contain styrene, this method can be used to estimate the content of SBR in the blend. The absorption of any other non-extractable aromatic substances in a specific spectral region will interfere with the determination results of this method. When the inorganic filler insoluble in nitric acid exceeds 5% (mass fraction) in the compound, the result obtained by this method is low.

GB/T 13646-2013 Referenced Document

GB/T 15340 Rubber,raw natural and raw synthetic.Sampling and further preparative procedures
GB/T 17783 Rubber,vulcanized or thermoplastic—Chemical tests—Preparation of samples and test piece*， 2019-12-10 Update
GB/T 3516 Rubber. Determination of solvent extract
ISO 4655 Rubber; Reinforced styrene-butadiene latex; Determination of total bound styrene content

2013 GB/T 13646-2013 Rubber.Determination of bound styrene content.Spectrophotometric method
1992 GB/T 13646-1992 Rubber--Determination of bound styrene content--Spectrophotometric method