File:Silikonschaum mischung 005.png
Jump to navigation
Jump to search
Size of this preview: 800 × 531 pixels. Other resolutions: 320 × 213 pixels | 640 × 425 pixels | 1,024 × 680 pixels | 1,280 × 850 pixels | 2,560 × 1,700 pixels | 4,644 × 3,084 pixels.
Original file (4,644 × 3,084 pixels, file size: 12.81 MB, MIME type: image/png)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]
| Description |
Deutsch: Eines von 14 Bildern über Vormischung von A & B Komponenten sowie Vermischung beider Komponenten zum Aufschäumen als fertiger Silikonschaum – eine exotherme Reaktion. Auch zu beachten: Arbeitssicherheit durch gute Entlüftung. Dieses Experiment fand draußen statt. Bei Vermischen beider Komponenten vulkanisiert das Kautschuk (geht von Flüssig- zu Feststoff über), wird Wasserstoffgas erzeugt, welches für die Blasenbildung innerhalb des Kautschuks verantwortlich ist. Beim Einsatz als Abschottungsmaterial, hält sich der Schaum dann durch Druck des Gases in den Blasen, gegen das Kautschuk in der Öffnung (sofern nicht permanente Schalung dazu eingesetzt wird). Gemäß Berichten den US Behörde USNRC, können diese Gase, die alleinig für den Halt der Silikonschaumabschottung verantwortlich sind (wenn keine Schalung vorhanden ist) entweichen, welches den Druck und somit den Halt der Abschottung auf zunehmende Weise mit der Zeit verringert. Daher sollten Alterungsprüfungen auch den Druck des Materials im Laufe der Zeit berücksichtigen.
English: One of 14 pictures illustrating mixing of components A and B as well as the mixing of both components to result in finished silicone foam – an exothermic reaction. Attention: workplace safety via adequate venting of the workspace. This experiment was done outdoors. As a result of mixing both components, the rubber vulcanises (turns from liquid to solid) and results in the evolving of hydrogen gas, which is responsible for creating gas-filled bubbles inside the rubber. When used as a firestop, the foam then remains inside of openings as a result of outward pressure from the gas bubbles towards the rubber in the opening (insofar as permanent forms may not be in place to do so). According to the US federal department USNRC, the gases, which are solely responsible for the pressure, which is holding the silicone foam firestop in place, can escape over time, thus lowering the pressure and the hold of the silicone foam firestop inside of the opening (unless permanent forms are in place to accomplish this task). It is, therefore, sound practice, for ageing test regimes to consider the pressure exerted by the material over time.
|
| Date | |
| Source | Own work |
| Author | Achim Hering |
Licensing
[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:44, 3 September 2017 | | 4,644 × 3,084 (12.81 MB) | Achim Hering (talk | contribs) | {{Information |Description ={{de|1=Eines von 16 Bildern über Vormischung von A & B Komponenten sowie Vermischung beider Komponenten zum Aufschäumen als fertiger Silikonschaum – eine exotherme Reaktion. Auch zu beachten: Arbeitssicherheit durch g... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
