ISO 4892-3:2024

Name: ISO 4892-3:2024 — Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps
SKU: ISO 4892-3:2024
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Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps

Название (английский):

ISO 4892-3:2024

Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 3 октября 2024 г.
Издание:: ISO IS 4892 edition 5 version 1
ICS:: 83.080.01

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Описание (английский):

This document specifies methods for exposing plastic specimens to fluorescent UV lamp radiation, heat and water in apparatus designed to simulate the weathering effects that occur when plastic materials are exposed in actual end-use environments to global solar radiation, or to window-glass filtered solar radiation. Fluorescent UV lamp exposures for paints, varnishes and other coatings are described in ISO 16474-3.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4892-3:2024 - Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps specifies standardized methods for accelerated weathering of plastics using fluorescent UV lamps. The standard defines how to expose plastic specimens to UV radiation, heat and water in laboratory apparatus that simulate the effects of global solar radiation or window-glass filtered solar radiation. It replaces the 2016 edition and adds clarity on different chamber types and test cycles.

Keywords: ISO 4892-3:2024, fluorescent UV lamps, plastics weathering, accelerated weathering, laboratory light sources, UVA-340, UVA-351, UVB-313.

Key topics and technical requirements

Scope and purpose: Simulate UV-driven ageing of plastic materials under controlled irradiance, temperature and wetting conditions. (Coatings/paints use ISO 16474-3.)

Lamp types: Defines three lamp categories - UVA-340 (simulates global solar UV), UVA-351 (simulates window-glass filtered solar UV) and UVB-313 (emits shorter wavelengths; use only by agreement). Different lamp types must not be mixed.

Apparatus and chambers: Specifies laboratory light sources, radiometers, specimen holders and two fundamentally different chamber types - condensation type and climatic chamber type (new Annex B and C guidance).

Environmental control: Requirements for irradiance measurement and control, temperature regulation, humidity control, and wetting methods (condensation or water spray).

Test conditions and cycles: Describes selection of irradiance level, UV/dark timing, wetting temperature and cycles, and alternative cycles (Annex D).

Procedure and reporting: Guidance on specimen mounting, exposure, measurement of radiant exposure, determination of property changes and required test report information.

Quality measures: Lamp ageing and maintenance, irradiance uniformity, use of control specimens, and caution against direct intercomparison between different apparatus types unless validated statistically.

Applications and users

Who uses it: Plastics manufacturers, material scientists, test laboratories, quality assurance teams, product designers and regulatory bodies involved in durability and lifetime prediction.

Practical uses: Evaluate UV stability, compare formulations, validate UV stabilizers, qualify materials for outdoor applications, support product claims for colorfastness and mechanical retention, and help select materials for end-use environments (outdoor vs. window-exposed).

Outputs: Standardized accelerated weathering data, reproducible test reports and comparative performance benchmarks for plastics exposed to UV radiation.

Related standards

ISO 4892-1 - General guidance for laboratory light exposure methods.

ISO 4582 - Determination of changes in colour and properties after exposure.

ISO 16474-3 - Fluorescent UV exposures for paints, varnishes and coatings.

CIE 241 - Reference solar spectral irradiance used in this standard.

ISO 4892-3:2024 is essential for anyone performing controlled UV/heat/water exposure testing on plastics and seeking reproducible, internationally recognized accelerated weathering results.

ISO 4892-3:2024

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

BS EN ISO 16474-3:2013

Paints and varnishes. Methods of exposure to laboratory light sources - Fluorescent UV lamps

BS EN ISO 4892-1:2024

Plastics. Methods of exposure to laboratory light sources - General guidance and requirements

BS ISO 4582:2017

Plastics. Determination of changes in colour and variations in properties after exposure to glass-filtered so…