Microwave Processing of PET Using Solid-State Microwave Generators

被引：2
|
作者：
Veronesi, Paolo [1 ]
Colombini, Elena [1 ]
Salvatori, Diego [1 ]
Catauro, Michelina [2 ]
Leonelli, Cristina [1 ]
机构：
[1] Univ Modena & Reggio Emilia, Dept Engn Enzo Ferrari, Microwave Applicat Grp, Via Pietro Vivarelli 10, I-41125 Modena, Italy
[2] Univ Campania Luigi Vanvitelli, Dept Engn, Via Roma 29, I-81031 Aversa, Italy
来源：
MACROMOLECULAR SYMPOSIA | 2021年 / 395卷 / 01期
关键词：
drying; granules; metals; microwave heating; PET; welding;
D O I：
10.1002/masy.202000204
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The present study addresses the possibility of using a frequency-controllable microwave source, that is, a solid-state microwave generator, to rapidly and efficiently heat PET. Based on dielectric properties measurement of PET, numerical simulation has been used to model dedicated microwave applicators, suitable for the rapid reheating of PET granules or preforms. Numerical simulation, validated by experimental activity, demonstrates that using the proper frequency change as PET is being processed allows to maximize heating efficiency or homogeneity. Two examples of microwave applicators, one for small-scale and the other for large-scale production are presented, specially addressing the effect of using different metals for the modeling and construction of the microwave cavity.
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页数：4
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