Codes & Standards - Purchase

ISO 6721-7:2019

Plastics -- Determination of dynamic mechanical properties -- Part 7: Torsional vibration -- Non-resonance method

SKU: iso_073147_166999 Published by ISO Publication Year 2019 2 Edition 10 pages

Product Details

Overview

This document describes a torsional, non-resonance method for determining the components of the shear complex modulus G* of solid polymers in the form of bars or rods at frequencies typically in the range 0,001 Hz to 100 Hz. Higher-frequency measurements can be made, but significant errors in the dynamic properties measured are likely to result (see 10.2.1 and 10.2.2). The method is suitable for measuring dynamic storage moduli ranging from about 10 MPa, which is typical of values obtained for stiff rubbers, to values of about 10 GPa which are representative of fibre-reinforced plastics. Although materials with moduli less than 10 MPa can be studied, more accurate measurements of their dynamic properties can be made using simple shear (see ISO 6721-6) or torsional deformations of thin layers between parallel plates. This method is particularly suited to the measurement of loss factors greater than 0,02 and may therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region (see ISO 6721â€‘1). The availability of data determined over wide ranges of both frequency and temperature enable master plots to be derived, using frequency-temperature shift procedures, which display dynamic properties over an extended frequency range at different temperatures. NOTE Although loss factors below 0,1 can be more accurately determined using the torsion pendulum (see ISO 6721â€‘2), the method described in this document enables a much wider and continuous frequency range to be covered.

Language

English

Format

PDF

GST REG No R119441681
QST REG No R1006017360

Features	CSA Advantage^TM	CSA OnDemand^TM
Offline access
Full-text search
Create highlights and personal notes
Newest editions added automatically
Includes all supported languages and archive versions
My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick reference
Toggle between your files and the full standard to maintain context
Instantly preview cross referenced material within the book
Export personal notes to Excel
Transfer notes and highlights when updates are available
Adobe Reader PDF and browser compatible for iOS and Android
Web, Android, iOS Compatible

Browse By Subject Area

Browse By Publisher

ICS Catalogue

Browse By Subject Area

CSA Subscriptions

ICS Catalogue

en

fr

Catalogue

Browse By Subject Area

Browse By Publisher

ICS Catalogue

Subscription

Browse By Subject Area

CSA Subscriptions

ICS Catalogue

Services

en

fr

Codes & Standards - Purchase

ISO 6721-7:2019

Product Details

Language

Format

Browse By Subject Area

Browse By Publisher

ICS Catalogue

Browse By Subject Area

CSA Subscriptions

ICS Catalogue

Language

en

fr

Currency

CAD

USD

Catalogue

Browse By Subject Area

Browse By Publisher

ICS Catalogue

Subscription

Browse By Subject Area

CSA Subscriptions

ICS Catalogue

Services

Language

en

fr

Currency

CAD

USD

Search Section

Codes & Standards - Purchase

ISO 6721-7:2019

Product Details

Language

Format