ISO 11357-3:2025

Name: ISO 11357-3:2025 — Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and enthalpy of melting and crystallization
SKU: ISO 11357-3:2025
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Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and enthalpy of melting and crystallization

Название (английский):

ISO 11357-3:2025

Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and enthalpy of melting and crystallization

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 29 мая 2025 г.
Издание:: ISO IS 11357 edition 4 version 1
ICS:: 83.080.01

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Описание (английский):

This document specifies a method for the determination of the temperatures and enthalpies of melting and crystallization of crystalline or partially crystalline plastics using conventional DSC as specified in ISO 11357-1. This document is not applicable to fast DSC as specified in ISO 23976.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 11357-3:2025 - Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of temperature and enthalpy of melting and crystallization specifies a method for measuring melting and crystallization temperatures and enthalpies of crystalline or partially crystalline plastics using conventional DSC. This fourth-edition standard (May 2025) is part of the ISO 11357 series and applies only to conventional DSC as referenced in ISO 11357-1; it explicitly excludes fast DSC methods (ISO 23976).

Key topics and requirements

The standard defines the essential elements required for reliable DSC thermal analysis of plastics:

Principle: use of conventional differential scanning calorimetry to record thermal transitions associated with melting and crystallization.

Apparatus and materials: general requirements for DSC instruments and crucibles as referenced to ISO 11357-1.

Specimen preparation: guidance on sample size, conditioning and handling of crystalline or partially crystalline specimens.

Test conditions and conditioning: recommended temperature programs, heating/cooling rates and atmosphere considerations (see standard for specifics).

Calibration: procedures for instrument calibration to ensure accurate temperature and enthalpy results.

Operating procedure: stepwise workflow covering instrument start-up, sample loading, placing crucibles and running temperature scans.

Expression of results: methods for determining transition temperatures and calculating enthalpies of fusion/crystallization from DSC traces (see clauses 10.2 and 10.3).

Fidelity and reporting: criteria for measurement repeatability/uncertainty and the required content of a test report.

Practical applications

ISO 11357-3:2025 is used to generate quantitative, comparable thermal data for plastics:

Determining melting points and crystallization temperatures for polymer specification and grade control

Measuring heats of fusion/crystallization to estimate degree of crystallinity

Supporting processing parameter development (molding, extrusion, annealing)

Comparing recyclates, blends and formulations for thermal performance

Failure analysis and material verification in quality assurance

Related standards

ISO 11357-1 (general principles and equipment for DSC)

ISO 23976 (fast DSC - excluded by this part)

Other parts of the ISO 11357 series covering related thermal analysis methods

Keywords: ISO 11357-3:2025, differential scanning calorimetry, DSC, melting enthalpy, crystallization enthalpy, plastics testing, conventional DSC, thermal analysis standard.

ISO 11357-3:2025

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Who should use it

Related standards

Технические детали

BS EN ISO 11357-4:2021

Plastics. Differential scanning calorimetry (DSC). Determination of specific heat capacity.

BS EN ISO 11357-1:2023

Plastics. Differential scanning calorimetry (DSC). General principles.

ISO 23976:2021

Plastics — Fast differential scanning calorimetry (FSC) — Chip calorimetry