ISO 4664-3:2021 PDF

Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 3: Glass transition temperature (Tg)

Название (английский):

ISO 4664-3:2021

Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 3: Glass transition temperature (Tg)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 24 марта 2021 г.
Издание:: ISO IS 4664 edition 1 version 1
ICS:: 83.060

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Описание (английский):

This document specifies a method for determining the glass transition temperature, Tg, of vulcanized rubbers in the hardness range from 30 IRHD to 80 IRHD. The dynamic properties are measured via temperature sweep in sinusoidal deformation at a defined strain and frequency and Tg is determined from the peak in the tan δ versus temperature curve. Glass transition temperature, Tg, determined in this way serves the purpose of a guideline to the service temperature of the material.

Технические детали

Технический комитет: ISO/TC 45/SC 2 - Testing and analysis
SKU: ISO 4664-3:2021

Abstract

Overview

ISO 4664-3:2021 - Rubber, vulcanized or thermoplastic - Determination of dynamic properties - Part 3: Glass transition temperature (Tg) specifies a standardized method to determine the glass transition temperature (Tg) of vulcanized and thermoplastic rubbers in the hardness range 30–80 IRHD. The method uses a temperature sweep under controlled sinusoidal deformation (dynamic mechanical testing) and identifies Tg as the peak in the tan δ (loss factor) versus temperature curve. Tg obtained by this dynamic method is intended as a guideline to the material’s service temperature.

Key topics and requirements

Measurement principle: Dynamic mechanical analysis (DMA)-style temperature ramp with sinusoidal deformation; Tg = temperature at maximum tan δ.
Material range: Vulcanized or thermoplastic rubbers, hardness 30–80 IRHD.
Test modes & specimens:
- Compression cylinder: 10 mm height × 10 mm diameter (preferred).
- Tension strip: preferred dimensions 25 mm length, 10 mm width, 2.0 ± 0.2 mm thickness with 10 mm test length.
- Shear: sandwich construction with rubber elements bonded to metal cylinders.
Apparatus performance:
- Force readout accuracy ±1.0%.
- Loss factor (tan δ) accuracy ±5% or ±0.02 (whichever smaller).
- Sinusoidal wave with

Overview

Key topics and requirements

Measurement principle: Dynamic mechanical analysis (DMA)-style temperature ramp with sinusoidal deformation; Tg = temperature at maximum tan δ.
Material range: Vulcanized or thermoplastic rubbers, hardness 30–80 IRHD.
Test modes & specimens:
- Compression cylinder: 10 mm height × 10 mm diameter (preferred).
- Tension strip: preferred dimensions 25 mm length, 10 mm width, 2.0 ± 0.2 mm thickness with 10 mm test length.
- Shear: sandwich construction with rubber elements bonded to metal cylinders.
Apparatus performance:
- Force readout accuracy ±1.0%.
- Loss factor (tan δ) accuracy ±5% or ±0.02 (whichever smaller).
- Sinusoidal wave with

ISO 4664-3:2021 PDF

Технические детали

Abstract

Overview

Key topics and requirements

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