BS ISO 4659:2020 pdf download.Styrene-butadiene rubber (carbon black or carbon black and oil masterbatches) — Evaluation procedure
1 Scope
This document specifies:
— the physical and chemical tests on raw rubbers;
— the standard materials, standard test formulations, equipment, and processing methods for evaluating the vulcanization characteristics of styrene-butadiene rubber masterbatches with carbon black or with carbon black and oil.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 247-1:2018, Rubber — Determination of ash — Part 1: Combustion method
ISO 247-2:2018, Rubber — Determination of ash — Part 2: Thermogravimetric analysis (TGA)
ISO 248-1, Rubber, raw — Determination of volatile-matter content — Part 1: Hot-mill method and oven method
ISO 248-2, Rubber, raw — Determination of volatile-matter content — Part 2: Thermogravimetric methods using an automatic analyser with an infrared drying unit
ISO 289-1, Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 1:
Determination of Mooney viscosity
ISO 1795, Rubber, raw natural and raw synthetic — Sampling and further preparative procedures
ISO 2393, Rubber test mixes — Preparation, mixing and vulcanization — Equipment and procedures
ISO 6502-1, Rubber — Measurement of vulcanization characteristics using curemeters — Part 1:Introduction
ISO 6502-2, Rubber — Measurement of vulcanization characteristics using curemeters — Part 2: Oscillating disc curemeter
ISO 11235, Rubber compounding ingredients — Sulfenamide accelerators — Test methods
ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Sampling and further preparative procedures
4.1 Select the sample from the lot in accordance with ISO 1795.
4.2 Take a laboratory sample of approximately 1,5 kg by the method described in ISO 1795.
4.3 Prepare test samples in accordance with ISO 1795.
5 Physical and chemical tests on raw rubber
5.1 Mooney viscosity
Prepare a test sample in accordance with the preferred procedure in ISO 1795, i.e. without milling.
If massing is deemed necessary, use a mill with its roll surfaces maintained at a temperature of 35 °C ± 5 °C and record this fact in the test report.
Determine the Mooney viscosity in accordance with ISO 289-1. Record the result as ML(1 + 4) at 100 °C.
5.2 Volatile matter
Determine the volatile-matter content by the hot-mill method or by the oven method as specified in ISO 248-1 or by the method specified in ISO 248-2.
5.3 Ash
Determine the ash in accordance with either method A, or method B, or method C of ISO 247-1:2018, or method A of ISO 247-2:2018.
BS ISO 4659:2020 pdf download
