ISO 21870:2005
Rubber compounding ingredients — Carbon black — Determination of high-temperature loss on heating by thermogravimetry
Rubber compounding ingredients — Carbon black — Determination of high-temperature loss on heating by thermogravimetry
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 12 января 2005 г.
- Издание:
- ISO IS 21870 edition 1 version 1
- ICS:
- 83.040.20
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.
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
Технические детали
- Технический комитет
- ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
- SKU
- ISO 21870:2005
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