Standard

BS ISO 2322:2023

Styrene-butadiene rubber (SBR). Emulsion- and solution-polymerized types. Evaluation procedures

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This document specifies:

— physical and chemical tests on raw rubbers;
— standard materials, standard test formulations, equipment, and processing methods for evaluating the vulcanization characteristics of emulsion- and solution-polymerized styrene-butadiene rubbers (SBRs), including oil-extended rubbers.

It applies to those rubbers listed in Table 1 which are normally used in vulcanized form.

Table 1 — Types of raw styrene-butadiene rubber

Rubber (oil-extended or non-oil-extended)	Styrene
Rubber (oil-extended or non-oil-extended)	Type of copolymer	Total content % mass fraction	Block content % mass fraction
Series A Emulsion SBR Solution SBR Solution SBR	Random Random Partial block	≤50 ≤50 ≤50	0 0 ≤30
Series B Emulsion SBR Solution SBR Solution SBR	Random Random Partial block	>50 >50 ≤50	0 0 >30

Product Details

Descriptors

Tensile strain

Elongation

Vulcanization

Tensile testing

Test specimens

Synthetic rubber

Tensile stress

Mixing

Styrene-butadiene rubber

Specimen preparation

Additives

Testing conditions

Vulcanized rubber

Precision

ICS Codes

83.060 Rubber

Committee

PRI/22

International relationships

Identical to:

ISO 2322

ISBN

978 0 539 15138 1

Publisher

BSI