ISO 19935-1:2018 PDF

Name: ISO 19935-1:2018 — Plastics — Temperature modulated DSC — Part 1: General principles
SKU: ISO 19935-1:2018
Price: 25 EUR
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Plastics — Temperature modulated DSC — Part 1: General principles

Название (английский):

ISO 19935-1:2018

Plastics — Temperature modulated DSC — Part 1: General principles

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 25 сентября 2018 г.
Издание:: ISO IS 19935 edition 1 version 1
ICS:: 83.080.01

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Описание (английский):

This document establishes general principles of temperature modulated differential scanning calorimetry (DSC) such as description of the principle and the apparatus, sampling, calibration and general aspects of the procedure and test report common to all parts of the ISO 19335 series. NOTE Details on performing specific methods are intended to be given in the future parts of the ISO 19335 series.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 19935-1:2018 - Plastics - Temperature modulated DSC - Part 1: General principles defines the general principles for using temperature-modulated differential scanning calorimetry (TM‑DSC) for plastics. It describes the measurement principle and apparatus, sampling, calibration and reporting conventions that are common to the ISO 19935 series. Part 1 is deliberately focused on fundamentals; details for specific test methods are reserved for subsequent parts of the series.

Key topics and technical requirements

Measurement principle: Difference in heat flow between specimen and reference under a controlled, periodic temperature modulation superimposed on an underlying heating/cooling rate.

Temperature modulation modes: Variable heating-rate modulation, sinusoidal and non‑sinusoidal waveforms, single- and multi-frequency modulation.

Calculation of heat flow and heat capacity: Treatment of underlying and periodic heat-flow components; extraction of apparent and complex heat capacity (real and imaginary parts or magnitude/phase).

Reversing vs non‑reversing signals: Separation of reversible (heat capacity related) and non‑reversible (kinetic or latent heat) contributions.

Instrument considerations and calibration: Requirements for modulation amplitude and phase calibration, frequency-dependent calibration factor K(ω), and the effect of instrument time constants on analysis.

Time‑dependent behavior: Handling non‑equilibrium processes (relaxation, vitrification) via time‑dependent heat capacity and frequency-domain (Fourier) treatment.

Procedure and reporting: General experimental conditions, interpretation guidance, and required elements for the test report to ensure comparability and traceability.

Normative references and theory: Links to ISO 472 (vocabulary), ISO 11357-1 (DSC general principles) and theoretical background (Annex A).

Practical applications and users

ISO 19935-1 is intended for laboratories and organizations performing thermal analysis of polymers. Typical applications include:

Characterizing glass transition, melting, crystallization and cold crystallization.

Measuring heat capacity and separating overlapping thermal transitions.

Monitoring curing or cross‑linking reactions in thermosets and elastomers.

Quality assurance, raw-material checks and preparation of data sheets/databases.

Research and development where improved resolution of overlapping events or kinetic contributions is required.

Who uses it:

Polymer scientists and materials engineers

Thermal analysis and QA laboratories

Instrument manufacturers and service providers

Standards developers and regulatory bodies

Related standards

ISO 11357-1 - Plastics: Differential scanning calorimetry (general principles)

ISO 472 - Plastics: Vocabulary

ISO 80000-5 - Quantities and units (thermodynamics)

Keywords: ISO 19935-1, temperature modulated DSC, TM-DSC, modulated differential scanning calorimetry, plastics thermal analysis, heat capacity, complex heat capacity, calibration, polymer testing.

ISO 19935-1:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

BS ISO 19935-2:2020

Plastics. Temperature modulated DSC - Measurement of specific heat capacity cp

ISO 472:2013/Amd 1:2018

Plastics — Vocabulary — Amendment 1: Additional items

BS EN ISO 11357-1:2023

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

SIST EN ISO 80000-5:2019/A1:2025

Quantities and units - Part 5: Thermodynamics - Amendment 1 (ISO 80000-5:2019/Amd1:2025)