File:Vulcanized polybutadiene-DMA.png

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(914 × 641 pixels, file size: 34 KB, MIME type: image/png)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
English: Simplified version of File:DMA rubber.gif shown below.

Variation of the storage modulus (which characterizes the stiffness of a viscoelastic material), E', and loss factor, tangent delta, with temperature.
Material based on vulcanized polybutadienes (code: BR).
Composition: blend of solid and semi-liquid BR, fillers, vulcanization system, additives, etc.; sealant vulcanized for ~30 min at ~180 °C.
Technique used: DMA, tension-compression at constant frequency f = 1 Hz; stabilized temperature.
For the final product (cured), at 1 Hz: Tg ~15 °C and E' ~250 MPa at 23 °C.

This elastomeric sealant for automobiles is a good damping of vibrations around the ambient temperature at 1 Hz because the damping (or loss) factor is greater than 0.2 between 10 and 30 °C.
Français : Version simplifiée de File:DMA rubber.gif présenté ci-dessous.

Variation du module de conservation (qui caractérise la rigidité d'un matériau viscoélastique), E', et du facteur de perte, tangente delta, avec la température.
Matériau à base de polybutadiènes (sigle BR) vulcanisés.
Formulation : mélange de BR solide et semi-liquides, charges, système de vulcanisation, additifs, etc. ; mastic vulcanisé pendant ~30 min à ~180 °C.
Technique utilisée : DMA, traction-compression à fréquence constante f = 1 Hz ; température stabilisée.
On relève à 1 Hz sur le matériau final (cuit) : Tg ~15 °C et E' ~250 MPa à 23 °C.

Ce mastic élastomère pour automobile est un bon amortissant de vibrations autour de l'ambiante à 1 Hz, car le facteur d'amortissement (ou de perte) est supérieur à 0,2 entre 10 et 30 °C.
Date
Source Own work
Author Cjp24
Other versions
Source file.
DMA on a polymer material.

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.
Annotations
InfoField
This image is annotated: View the annotations at Commons

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current23:05, 13 November 2009Thumbnail for version as of 23:05, 13 November 2009914 × 641 (34 KB)Cjp24 (talk | contribs){{Information |Description={{en|1=Variation of the storage modulus and loss factor with temperature on a vulcanized polybutadiene (BR) material by DMA technique at f=1 Hz.<br /> Formula : blend of solid and semi-liquid BR - sealant cured 30 mn at 180°C.}

You cannot overwrite this file.

The following page uses this file:

File usage on other wikis

The following other wikis use this file:

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Vulcanized_polybutadiene-DMA.png&oldid=456871642"