ISO 21870:2005 PDF

Rubber compounding ingredients — Carbon black — Determination of high-temperature loss on heating by thermogravimetry

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Title (English):

ISO 21870:2005

Rubber compounding ingredients — Carbon black — Determination of high-temperature loss on heating by thermogravimetry

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 4
Publication date:: January 12, 2005
Edition:: ISO IS 21870 edition 1 version 1
ICS:: 83.040.20

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Description (English):

ISO 21870:2005 describes a method for quantitative determination of the loss on heating (pyrolysis) of carbon black due to the elimination of volatile materials other than those liberated when heating to 125 °C (ISO 1126). The method is applicable to carbon black for the rubber industry. It serves to assess the decomposition of functional groups and adsorbed substances (e.g. hydrocarbons) present on the surface of the carbon black.

Technical details

Technical committee: ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
SKU: ISO 21870:2005

Abstract

Overview

ISO 21870:2005 specifies a thermogravimetric method for determining the high‑temperature loss on heating (pyrolysis) of carbon black used in rubber compounding. The method quantifies mass loss due to decomposition of functional groups and adsorbed substances (e.g., hydrocarbons) that are not removed by the low‑temperature volatile test in ISO 1126. Results support quality control, material specification and surface‑chemistry assessment of carbon black for the rubber industry.

Key topics and technical requirements

Principle: Thermogravimetric analysis (TGA) of a known sample mass in an oxygen‑free (nitrogen) atmosphere; the mass change vs temperature (thermogram) provides volatile content and pyrolysis loss.
Equipment: High‑precision thermobalance (microgram resolution), furnace to ~1 000 °C, temperature programmer (up to 50 °C/min capability), nitrogen supply with

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Principle: Thermogravimetric analysis (TGA) of a known sample mass in an oxygen‑free (nitrogen) atmosphere; the mass change vs temperature (thermogram) provides volatile content and pyrolysis loss.
Equipment: High‑precision thermobalance (microgram resolution), furnace to ~1 000 °C, temperature programmer (up to 50 °C/min capability), nitrogen supply with

ISO 21870:2005 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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