Techniques for the Characterization of Fluoroelastomers

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Authors
  1. Hiltz, J.A.
  2. Smith, S.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
Fluoroelastomers are synthetic elastomers containing fluorine. They have excellent chemical and heat resistance and are specified for many applications where chemical and heat resistance is required. They are among the best materials for use in the marine, automotive, aerospace, oil, and chemical industries where they are used as seals, O-rings, gaskets, and fuel hoses. In this memorandum four fluoroelastomers, A Type, B Type, GFLT Type and GLT Type, were characterized using Fourier transform infrared (IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), and pyrolysis gas chromatography/mass spectrometry/mass spectrometry (Py-GC/MS/MS). The objective of this characterization was two-fold; firstly to amass physical and chemical information on the elastomers and secondly to determine which technique or combination of techniques could be used to positively identify the four fluoroelastomers. IR spectroscopy indicated that there are peaks that could be used to differentiate between the four types of fluoroelastomers. TGA weight loss versus temperature and temperature of maximum rate of weight loss data was different for the four fluoroelastomers studied and in conjunction with other experimental data could be used to identify the four elastomers. The glass transition temperatures (Tg) of the four elastomers measured, using both DSC and DMA, were different. For new unadulterated elastomer samples

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Report Number
DRDC-ATLANTIC-TM-2009-246 — Technical Memorandum
Date of publication
01 Dec 2009
Number of Pages
52
DSTKIM No
CA034863
CANDIS No
534368
Format(s):
Electronic Document(PDF)

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