1997
DOI: 10.1002/masy.19971220129
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Radiofrequency (27.12 MHz) activation of the curing reaction of epoxy resins of DGEBA type

Abstract: Radiofrequency (27.12 MHz) heating is used for the activation of the curing reaction of an epoxy resin of DGEBAa) type in presence of diaminodiphenylmethane as crosslinking agent. The principle of the activation process is based on the partial conversion as heat of the dielectric loss in the organic medium due to the forced dipolar relaxation at 27.12 MHz. The samples of thermosetting matter are positioned between two parallel steel plates or electrodes, and an electrical voltage is applied. When the temperatu… Show more

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Cited by 2 publications
(2 citation statements)
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“…(1): T 3 T (t)1 (2): P 3 P(t)1 (1 1 ): (T ) 1 3 dT dt1 (2 1 ): (P) 1 3 dPdt (T ) 1 3 dT dt and (P) 1 3 dPdt. The shape of the T curve is similar to that encountered in the curing reactions of a thermosetting resin activated by classical thermal heating carried out inside an oven, or by microwave heating [1,7]. The transition of fusion is located at the inflexion point of the first segment of the curve (4.0 min1 30.5 C).…”
Section: Curing Of Epoxy Resins Of Dgeba Type At Given Electrical Potential V 0 = 1 200 Vmentioning
confidence: 59%
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“…(1): T 3 T (t)1 (2): P 3 P(t)1 (1 1 ): (T ) 1 3 dT dt1 (2 1 ): (P) 1 3 dPdt (T ) 1 3 dT dt and (P) 1 3 dPdt. The shape of the T curve is similar to that encountered in the curing reactions of a thermosetting resin activated by classical thermal heating carried out inside an oven, or by microwave heating [1,7]. The transition of fusion is located at the inflexion point of the first segment of the curve (4.0 min1 30.5 C).…”
Section: Curing Of Epoxy Resins Of Dgeba Type At Given Electrical Potential V 0 = 1 200 Vmentioning
confidence: 59%
“…The bibliographic analysis shows that our laboratory is the only one at the international level, which takes an interest in the RF activation of polymerization [6,7,8]. Such a situation gives us scientific responsibility in this new field.…”
Section: Introductionmentioning
confidence: 99%