Method for curing polymers using variable-frequency microwave heating
Abstract
A method for curing polymers incorporating a variable frequency microwave furnace system designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity is disclosed. By varying the frequency of the microwave signal, non-uniformities within the cavity are minimized, thereby achieving a more uniform cure throughout the workpiece. A directional coupler is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter is provided for measuring the power delivered to the microwave furnace. A second power meter detects the magnitude of reflected power. The furnace cavity may be adapted to be used to cure materials defining a continuous sheet or which require compressive forces during curing. 15 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 570406
- Patent Number(s):
- 5721286
- Application Number:
- PAN: 8-523,902
- Assignee:
- Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 24 Feb 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; POLYMERS; CURING; MICROWAVE HEATING; FREQUENCY MODULATION; MICROWAVE OVENS
Citation Formats
Lauf, R J, Bible, D W, and Paulauskas, F L. Method for curing polymers using variable-frequency microwave heating. United States: N. p., 1998.
Web.
Lauf, R J, Bible, D W, & Paulauskas, F L. Method for curing polymers using variable-frequency microwave heating. United States.
Lauf, R J, Bible, D W, and Paulauskas, F L. Tue .
"Method for curing polymers using variable-frequency microwave heating". United States.
@article{osti_570406,
title = {Method for curing polymers using variable-frequency microwave heating},
author = {Lauf, R J and Bible, D W and Paulauskas, F L},
abstractNote = {A method for curing polymers incorporating a variable frequency microwave furnace system designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity is disclosed. By varying the frequency of the microwave signal, non-uniformities within the cavity are minimized, thereby achieving a more uniform cure throughout the workpiece. A directional coupler is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter is provided for measuring the power delivered to the microwave furnace. A second power meter detects the magnitude of reflected power. The furnace cavity may be adapted to be used to cure materials defining a continuous sheet or which require compressive forces during curing. 15 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {2}
}
Works referenced in this record:
Accelerated imidization reactions using microwave radiation
journal, July 1992
- Lewis, D. A.; Summers, J. D.; Ward, T. C.
- Journal of Polymer Science Part A: Polymer Chemistry, Vol. 30, Issue 8
Frequency Agile Sources for Microwave Ovens
journal, January 1979
- Mackay B., A.; Tinga, W. R.; Voss, W. A. G.
- Journal of Microwave Power, Vol. 14, Issue 1
Use of Sheath Heiix Slow-wave Structure as an Applicator in Microwave Heating Systems
journal, January 1981
- El-Sayed, El-Deek; Abdel-Hamld, Tarik
- Journal of Microwave Power, Vol. 16, Issue 3