ISO INTERNATIONAL STANDARD 6721-10 Third edition 2015-09-15 Plastics Determination of dynamic mechanical properties - Part 10: Complex shear viscosity using a parallel-plate oscillatory rheometer Plastiques Détermination des proprieteés mécaniques dynamiques Partie 10: Viscosite complexe en cisaillement a I'aide d'un rhéometre a oscillations a plateaux paralleles Reference number ISO 6721-10:2015(E) SO International Organization for Standardization @ IS0 2015 lardization 5956617 d without license from IHS IS0 6721-10:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org PrganizationforStandardization etworking permitted without license from IHS IS0 6721-10:2015(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Principle .2 5 Apparatus. .2 5.1 Measurement apparatus .2 5.2 Temperature-controlled enclosure .3 5.3 Temperature measurement and control ..3 5.4 Plate/specimen assembly .4 5.5 Calibration 4 6 Sampling. .4 7 Procedure .5 7.1 Test temperature .5 7.2 Zeroing the gap. 5 7.3 Introducing the test specimen .5 7.4 Conditioning thetest specimen 5 7.5 Test mode (controlled stress or controlled strain) .5 7.6 Determination of thermal stability of sample material .6 7.7 Determination of region of linear-viscoelastic behaviour .6 7.7.1 In the controlled-strain mode. .6 7.7.2 In the controlled-stress mode .6 7.7.3 Confirmation of linear-viscoelastic behaviour ..7 7.8 Frequency sweep .7 7.9 Temperature sweep 7.10 Air entrapment. .7 8 Expression of results. ..7 8.1 Symbols used Calculation of complex shear modulus and complex shear viscosity 8.2 9 Precision ..10 10 Test report ..1 Annex A (informative) Uncertainty limits ..12 Annex B (informative) Verification of rheometer performance ..15 Bibliography .19 iii vided by IHS under lic vithoutlicense from IHS