Microwave sensor system for continuous monitoring of adhesive curing processes

A microwave sensor system has been developed for monitoring adhesive curing processes. The system provides continuous, real-time information about the curing progress without interfering with the reaction. An open-coaxial resonator is used as the sensor head, and measurements of its resonance freque...

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Bibliographic Details
Published in:Measurement science & technology 2012-03, Vol.23 (3), p.35101-1-8
Main Authors: García-Baños, Beatriz, Catalá-Civera, José M, Peñaranda-Foix, Felipe L, Canós, Antoni J, Sahuquillo-Navarro, Oscar
Format: Article
Language:English
Subjects:
Adhesives
cure process
Cures
Curing
Differential scanning calorimetry
microwave sensor
Microwave sensors
Monitoring
open-ended coaxial resonator
polymers
Quality factor
Real time
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Summary:A microwave sensor system has been developed for monitoring adhesive curing processes. The system provides continuous, real-time information about the curing progress without interfering with the reaction. An open-coaxial resonator is used as the sensor head, and measurements of its resonance frequency and quality factor are performed during cure to follow the reaction progress. Additionally, the system provides other interesting parameters such as reaction rate or cure time. The adhesive dielectric properties can also be computed off-line, which gives additional information about the process. The results given by the system correlate very well with conventional measurement techniques such as differential scanning calorimetry, combining accuracy and rate with simplicity and an affordable cost.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/23/3/035101