ISO 9773:2024
Plastics — Determination of burning behaviour of thin flexible vertical specimens in contact with a small flame ignition source
Plastics — Determination of burning behaviour of thin flexible vertical specimens in contact with a small flame ignition source
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 13 сентября 2024 г.
- Издание:
- ISO IS 9773 edition 3 version 1
- ICS:
- 13.220.40
This document specifies a small-scale laboratory screening procedure for comparing the relative burning behaviour of vertically oriented thin and relatively flexible plastics specimens exposed to a low-energy-level flame ignition source. NOTE These specimens cannot be tested using method B of IEC 60695-11-10:2013 since they distort or shrink away from the applied flame source without igniting. This test method determines the afterflame and afterglow times of specimens. The classification system described in Annex A is intended for quality control and the preselection of component materials for products. The classification established by this method of test is applicable only to the material used for the specimens. NOTE Test results are influenced by material components, e.g. pigments, fillers, concentrations of fire retardants.
Abstract
Overview
ISO 9773:2024 specifies a small-scale laboratory screening procedure for assessing the burning behaviour of thin, flexible, vertically oriented plastic specimens when exposed to a low‑energy small flame ignition source. The method measures afterflame and afterglow times to compare relative flammability of materials that cannot be tested with IEC 60695-11-10 method B because they distort or shrink away from the flame. The standard is primarily intended for quality control and preselection of component materials; classifications apply only to the tested material formulation.
Key topics and requirements
- Test objective: Determine afterflame and afterglow times of vertically mounted, nearly cylindrical specimens exposed to two successive 50 W diffusion burner applications.
- Specimen dimensions: Standard specimens are 200 mm ±5 mm long, 50 mm ±2 mm wide and a maximum thickness of 0.25 mm (thicker flexible specimens may be tested if they behave like thin nonrigid samples).
- Apparatus essentials:
- Test chamber or fume hood with internal volume ≥ 0.5 m3, dark interior (light level
Технические детали
- Технический комитет
- ISO/TC 61/SC 4 - Burning behaviour
- SKU
- ISO 9773:2024
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