ISO 11357-5:2013 PDF

Name: ISO 11357-5:2013 — Plastics — Differential scanning calorimetry (DSC) — Part 5: Determination of characteristic reaction-curve temperatures and times, enthalpy of reaction and degree of conversion
SKU: ISO 11357-5:2013
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Plastics — Differential scanning calorimetry (DSC) — Part 5: Determination of characteristic reaction-curve temperatures and times, enthalpy of reaction and degree of conversion

Название (английский):

ISO 11357-5:2013

Plastics — Differential scanning calorimetry (DSC) — Part 5: Determination of characteristic reaction-curve temperatures and times, enthalpy of reaction and degree of conversion

Статус документа:: Отменён
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 15 марта 2013 г.
Издание:: ISO IS 11357 edition 2 version 1
ICS:: 83.080.01

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Описание (английский):

ISO 11357-5:2013 specifies a method for the determination of reaction temperatures and times, enthalpies of reaction, and degrees of conversion using differential scanning calorimetry (DSC). The method applies to monomers, prepolymers, and polymers in the solid or liquid state. The material can contain fillers and/or initiators in the solid or liquid state.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 11357-5:2013 - Plastics - Differential scanning calorimetry (DSC) - Part 5 specifies a standardized DSC method for determining characteristic reaction-curve temperatures and times, enthalpy of reaction, and degree of conversion for monomers, prepolymers and polymers (solid or liquid). The method covers materials that may contain fillers and/or initiators and complements the general principles and apparatus requirements given in ISO 11357‑1. It supports both temperature‑scanning and isothermal DSC test modes.

Key topics and technical requirements

Test scope: Applies to monomers, prepolymers and polymers; filled materials and those containing initiators are acceptable.

Methods covered:

Temperature‑scanning method - perform a scan (ambient to a temperature below decomposition) at 5 K/min to 20 K/min; use same scan rate for comparative tests.
Isothermal method - either hold at constant measurement temperature or heat rapidly from ambient to the measurement temperature; choose measurement temperature based on a scanning trial.

Characteristic temperatures and times:

Temperatures: onset, extrapolated onset, temperature of maximum reaction rate (Tmax), extrapolated end, end of reaction.
Times (isothermal): time to reach equilibrium, onset time, extrapolated onset time, time of maximum reaction rate, end time.

Enthalpy of reaction (ΔHr): obtained by integrating the reaction peak area above an interpolated/extrapolated baseline (from start to end of reaction).

Degree of conversion (α): calculated as percent of partial enthalpy to total enthalpy (from a scan or isothermal run) using α = (ΔHpartial / ΔHtotal) × 100.

Specimen mass: typical mass 5–20 mg (adjust if thermal effect is too large or small).

Calibration, test specimen conditioning and apparatus: as specified in ISO 11357‑1.

Safety and precautions: caution for materials that may exhibit runaway reactions; use gas‑tight crucibles for volatile specimens; ensure final scan temperature is below decomposition onset.

Applications and users

Who uses ISO 11357‑5:2013:

Polymer R&D and formulation scientists studying curing, crosslinking and polymerization.

Quality control and materials testing laboratories assessing batch consistency and reaction completeness.

Process engineers optimizing curing profiles and reaction conditions.

Standards and compliance teams documenting thermal reaction properties for specifications.

Practical applications:

Quantifying curing enthalpy and degree of conversion for thermosets and adhesives.

Comparing reactivity of initiators or formulations.

Determining characteristic reaction temperatures for safe processing limits.

Supplying kinetic input (reaction extent vs. time/temperature) for process design and simulation.

Related standards

ISO 11357‑1 - General principles (calibration, apparatus, specimen handling)

ISO 11357‑2 - Glass transition

ISO 11357‑3 - Melting and crystallization

ISO 11357‑6 - Oxidation induction time (OIT)

ISO 11357‑7 - Crystallization kinetics

Keywords: ISO 11357-5:2013, differential scanning calorimetry, DSC, plastics, enthalpy of reaction, degree of conversion, isothermal DSC, temperature-scanning DSC, polymer curing, reaction temperatures.

ISO 11357-5:2013 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

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