ISO 4892-4:2024 PDF

Name: ISO 4892-4:2024 — Plastics — Methods of exposure to laboratory light sources — Part 4: Open-flame carbon-arc lamps
SKU: ISO 4892-4:2024
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Plastics — Methods of exposure to laboratory light sources — Part 4: Open-flame carbon-arc lamps

Название (английский):

ISO 4892-4:2024

Plastics — Methods of exposure to laboratory light sources — Part 4: Open-flame carbon-arc lamps

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 4 декабря 2024 г.
Издание:: ISO IS 4892 edition 4 version 1
ICS:: 83.080.01

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Описание (английский):

This document specifies methods for exposing specimens to open-flame carbon-arc lamps in the presence of moisture to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to global solar radiation, or to window-glass filtered solar radiation. The specimens are exposed to filtered open-flame carbon-arc light under controlled environmental conditions (temperature, moisture). Various filters are described. General guidance is given in ISO 4892-1.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 4892-4:2024 - Plastics - Methods of exposure to laboratory light sources - Part 4: Open‑flame carbon‑arc lamps specifies laboratory methods to reproduce outdoor weathering of plastics using filtered open‑flame carbon‑arc light in the presence of moisture. The standard defines how to expose specimens under controlled temperature, moisture/humidity, and spectral irradiance conditions to simulate global solar radiation or window‑glass filtered solar radiation for accelerated weathering and comparative testing.

Key topics and requirements

Purpose: Reproduce weathering effects (UV, visible, heat, moisture) that occur in end‑use environments using open‑flame carbon‑arc lamps.

Laboratory light source: Requirements for open‑flame carbon‑arc apparatus, including carbon rods (rare‑earth salts/coatings) and the use of glass filters.

Filter types: Descriptions of daylight filters (type 1), window‑glass filters (type 2) and extended‑UV filters (type 3) to tailor spectral irradiance to target solar conditions.

Spectral irradiance measurement: Spectral output is measured (typically 250–400 nm in 2 nm increments) and reported as passband percentages (e.g., 290–320 nm, 320–360 nm, 360–400 nm) relative to total UV irradiance.

Environmental control: Controlled black‑panel/black‑standard temperature, chamber air temperature, relative humidity, and programmed spray or condensation cycles to simulate moisture exposure.

Apparatus and instrumentation: Test chamber, radiometer, thermometer, spray system, specimen holders and equipment to assess property changes.

Procedure and reporting: Specimen mounting, exposure cycles (light/dark), radiant exposure measurement, and post‑exposure evaluation (changes in color, mechanical or physical properties). A reference control material is recommended; intercomparisons between devices require established statistical relationships.

Applications and users

ISO 4892-4:2024 is used for:

Accelerated weathering testing of plastics, coatings and polymeric components.

Predicting durability and service life where UV and moisture are key degradation factors.

Comparative product development, quality control, failure analysis and regulatory compliance.

Primary users:

Materials scientists, polymer formulators and R&D laboratories

Test houses and quality assurance teams

Manufacturers of plastics, outdoor equipment, automotive glazing and architectural materials

Certification bodies and standards organizations

Related standards

ISO 4892-1 - General guidance and requirements for laboratory light‑source exposure methods.

ISO 4582 - Determination of changes in colour and property variation after exposure to solar or laboratory sources.

Keywords: ISO 4892-4:2024, plastics weathering, open‑flame carbon‑arc, laboratory light sources, accelerated weathering, spectral irradiance, daylight filters, window‑glass filters, moisture exposure, black‑panel temperature.

ISO 4892-4:2024 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

SIST EN ISO 4892-1:2024

Plastics - Methods of exposure to laboratory light sources - Part 1: General guidance (ISO 4892-1:2024)

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