Dynamic Moduli Of Fluorocarbon Compounds
Item
- Title
- Dynamic Moduli Of Fluorocarbon Compounds
- Report Number
- WL-TR-91-3078 Volume III, p. GDA-1
- Creator
- Reader, Wayne T.
- Megill, Robert W.
- Corporate Author
- Vector Research Co., Inc.
- E. J. Dupont de Nemours & Co.
- Date
- 1991
- Date Issued
- 1991-08
- Extent
- 1
- Identifier
- ADA241313
- Abstract
- Viscoelastic polymers are frequently used to eliminate harmful or annoying noise fields in an environment which contains solvents or gases at elevated temperatures. The frequency range over which the particular polymer performs as a sound isolator, an absorber, or a damper may vary by orders of magnitude. Hence, a polymer family which is resistant to many common solvents and exhibits high loss factors distributed over several frequency decades covering the audio band should find many applications. Fluorocarbon elastomers such as copolymers of vinylidene flouride and hexafluoropropylene are such a family. Presented in this paper will be the results of an initial examination of the dynamic moduli, consisting of the elastic and loss components, of six different commercially available family members. The magnitude of the peak loss factor is found to vary between approximately 1.1 to 1.4, and its location by more than two decades in the frequency domain.
- Description
- Viscoelastic polymers are frequently used to eliminate harmful or annoying noise fields in an environment which contains solvents or gases at elevated temperatures. The frequency range over which the particular polymer performs as a sound isolator, an absorber, or a damper may vary by orders of magnitude. Hence, a polymer family which is resistant to many common solvents and exhibits high loss factors distributed over several frequency decades covering the audio band should find many applications. Fluorocarbon elastomers such as copolymers of vinylidene flouride and hexafluoropropylene are such a family. Presented in this paper will be the results of an initial examination of the dynamic moduli, consisting of the elastic and loss components, of six different commercially available family members. The magnitude of the peak loss factor is found to vary between approximately 1.1 to 1.4, and its location by more than two decades in the frequency domain.
- Distribution Classification
- 1
- Distribution Conflict
- No
- DTIC Record Exists
- No
- Illinois Tech Related
- No
- Photo Quality
- Not Needed
- Report Availability
- Full text available
- Type
- article
- Media
articleGDA
Linked resources
Warning: Undefined array key "id_concat" in /var/www/html/omeka-s/themes/foundation/view/common/linked-resources.phtml on line 40
Warning: Undefined array key "property_alternate_label" in /var/www/html/omeka-s/themes/foundation/view/common/linked-resources.phtml on line 41
Warning: Undefined array key "property_label" in /var/www/html/omeka-s/themes/foundation/view/common/linked-resources.phtml on line 43
| Title | Class |
|---|---|
| Proceedings of Damping '91: 13-15 February 1991 San Diego, California (GCA-1 through JCB-17) |