ISO 24180:2021

Name: ISO 24180:2021 — Textiles — Synthetic filament yarns — Electrostatic propensity evaluation by measuring electrical resistance
SKU: ISO 24180:2021
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Textiles — Synthetic filament yarns — Electrostatic propensity evaluation by measuring electrical resistance

Название (английский):

ISO 24180:2021

Textiles — Synthetic filament yarns — Electrostatic propensity evaluation by measuring electrical resistance

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 17 декабря 2021 г.
Издание:: ISO IS 24180 edition 1 version 1
ICS:: 59.080.20

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Описание (английский):

This document specifies methods for electrostatic propensity evaluation by measuring electrical resistance of synthetic filament yarns. It is applicable to synthetic filament yarns. Conductive yarns covered in this document are used for anti-static fabric. They are not used for transmission of electric signals, supply of electric power and electromagnetic shield and heating.

Abstract

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Overview

ISO 24180:2021 - Textiles - Synthetic filament yarns - Electrostatic propensity evaluation by measuring electrical resistance - defines a laboratory method to evaluate the electrostatic behaviour of synthetic filament yarns by measuring their electrical resistance. The standard covers test specimen preparation, conditioning, apparatus, test procedure, calculation of resistance per unit length and volume resistivity, precision, and reporting. It applies to synthetic filament yarns that include conductive components intended for anti‑static fabrics (not for power, signal transmission, electromagnetic shielding or heating).

Key topics and technical requirements

Scope and limits: Applies only to synthetic filament yarns used for anti‑static purposes; excludes yarns intended for electrical power, signal transmission, shielding or heating.

Atmosphere for conditioning/testing: Tests are performed at controlled conditions (nominally 20 ± 2 °C and 40 ± 4 % RH) in line with ISO 139.

Specimen preparation:

Cut yarn specimens typically 400–500 mm long.
Minimum three specimens per package; ≥30 specimens when assessing resistance non‑uniformity.
Pre‑conditioning and conditioning steps specified (per ISO 139).

Apparatus:

DC high‑resistance meter with defined measurement accuracy and open‑circuit voltage.
Insulating specimen holder with two copper clamps and a pulley; clamp spacing specified (10 ± 0.1 cm).
Tensioning weight to apply reproducible yarn tension.

Tensioning:

Tension per unit linear density is prescribed for non‑textured and textured yarns (different cN/dtex values), and actual tension is calculated from yarn linear density (ISO 2060).

Measurements and calculations:

Measure electrical resistance between clamps after energizing the meter (voltage typically 100 V) and reading after 1 minute.
Calculate resistance per unit length (Ω/m) and volume resistivity (Ω·m) from measured resistance, clamp spacing, yarn linear density and fibre density (Annex A provides typical fibre densities).
Results reported as arithmetic or geometric mean (scientific notation), with precision criteria given in Annex B.

Test report: Must include standard reference, sample identification, conditions, results, deviations, and date.

Applications

Quality control and acceptance testing for anti‑static yarns and fabrics.

R&D and product development of conductive/anti‑static textiles.

Supplier verification and material specification compliance for industries requiring electrostatic control (e.g., electronics, cleanrooms, packaging for ESD‑sensitive components).

Certification and regulatory documentation where electrostatic propensity data are required.

Related standards

ISO 139 - Standard atmospheres for conditioning and testing

ISO 2060 - Yarn linear density (dtex) by skein method

ISO 1183‑2 - Density measurement methods (referenced for fibre density)

ISO 5725‑2 - Precision assessment (referenced in Annex B)

Keywords: ISO 24180:2021, synthetic filament yarns, electrostatic propensity, electrical resistance, volume resistivity, anti‑static yarn testing, textile testing, yarn conditioning.

ISO 24180:2021

Abstract

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Overview

Key topics and technical requirements

Applications

Who should use this standard

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