ISO 22821:2021 PDF
Carbon-fibre-reinforced composites — Determination of fibre weight content by thermogravimetry (TG)
Carbon-fibre-reinforced composites — Determination of fibre weight content by thermogravimetry (TG)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 10
- Дата публикации:
- 8 января 2021 г.
- Издание:
- ISO IS 22821 edition 1 version 1
- ICS:
- 83.120
This document specifies a thermogravimetric method for the determination of fibre weight content by weight percent, of carbon fibre reinforced composites. This method applies to pre-products, such as, prepregs, parts and products of carbon fibre reinforced composites.
Abstract
Overview
ISO 22821:2021 specifies a thermogravimetric (TG/TGA) method for determining fibre weight content (weight %) in carbon‑fibre‑reinforced composites (CFRP). The method applies to prepregs, parts and finished products and uses a thermogravimetric analyser to remove the polymer matrix by controlled heating in inert and oxidizing atmospheres. Compared with older combustion/acid techniques, TG offers improved safety and reduced reagent waste.
Key topics and technical requirements
- Principle: measure mass loss as a function of temperature (thermogram) and its derivative (dm/dT) to distinguish resin pyrolysis from carbon fibre combustion.
- Sample preparation: test specimens of about 10 mg ± 2 mg, thickness
Технические детали
- Технический комитет
- ISO/TC 61/SC 13 - Composites and reinforcement fibres
- SKU
- ISO 22821:2021
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