Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers

Rensheng Sun, Shuangjie Zhou, Liming Zong, Dilip Mandal, Leo Kempel, Martin Hawley, Andre Benard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Polymer processing is an important application of microwave heating in industry. Microwave assisted curing of thermosets can lead to superior materials for a variety of applications. Microwave curing has the advantage of heating the polymer precursor materials volumetrically and hence can lead to superior cure with efficiency not available with conventional convection heating. However, due to the complex interactions between the electromagnetic fields and the material, achieving the promise of microwave assisted curing is challenging. This is due to the fact that electrical properties (e.g. the complex permittivity) of the material change during the curing process. Hence, the field distribution within the cavity applicator changes as a function of the cure and local temperature of the materials being processed. It is vital in modeling the curing process that the microwave power deposition, heating, and extent of cure be coupled together. In this work, we develop a self-consistent three-dimensional process model, which includes electromagnetic field distribution, heat transfer, microwave absorption, and chemical reactions/kinetics. This numerical model is implemented with finite element method [1]. Kinetics (e.g. extent of cure) based on experimental data [2] will be included in the model. The numerical results can be used to determine the time-dependent temperature profiles across the polymer sample, as well as the electromagnetic field distribution within the cavity applicator. The results will also be used in the design and diagnosis of a novel multi-feed cavity applicator where the spatial distribution of the electric field can be specified a priori to accomplish a desired processing task.

LanguageEnglish (US)
Title of host publicationAIChE Annual Meeting, Conference Proceedings
Pages1717
Number of pages1
StatePublished - 2004
Event2004 AIChE Annual Meeting - Austin, TX, United States
Duration: Nov 7 2004Nov 12 2004

Other

Other2004 AIChE Annual Meeting
CountryUnited States
CityAustin, TX
Period11/7/0411/12/04

Profile

Curing
Microwaves
Applicators
Kinetics
Electromagnetic fields
Polymers
Processing
Heating
Microwave heating
Thermosets
Spatial distribution
Numerical models
Chemical reactions
Electric properties
Permittivity
Electric fields
Hot Temperature
Heat transfer
Finite element method
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sun, R., Zhou, S., Zong, L., Mandal, D., Kempel, L., Hawley, M., & Benard, A. (2004). Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers. In AIChE Annual Meeting, Conference Proceedings (pp. 1717)

Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers. / Sun, Rensheng; Zhou, Shuangjie; Zong, Liming; Mandal, Dilip; Kempel, Leo; Hawley, Martin; Benard, Andre.

AIChE Annual Meeting, Conference Proceedings. 2004. p. 1717.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sun, R, Zhou, S, Zong, L, Mandal, D, Kempel, L, Hawley, M & Benard, A 2004, Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers. in AIChE Annual Meeting, Conference Proceedings. pp. 1717, 2004 AIChE Annual Meeting, Austin, TX, United States, 11/7/04.
Sun R, Zhou S, Zong L, Mandal D, Kempel L, Hawley M et al. Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers. In AIChE Annual Meeting, Conference Proceedings. 2004. p. 1717.
Sun, Rensheng ; Zhou, Shuangjie ; Zong, Liming ; Mandal, Dilip ; Kempel, Leo ; Hawley, Martin ; Benard, Andre. / Coupled electromagnetic thermal and kinetic modeling for microwave processing of polymers. AIChE Annual Meeting, Conference Proceedings. 2004. pp. 1717
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