𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Microwave curing of epoxy resins with diaminodiphenylmethane II. Crosslinking under continuous or pulsed waves

✍ Scribed by Nadir Beldjoudi; Abdelaziz Bouazizi; Driss Douibi; Albert Gourdenne

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
269 KB
Volume
24
Category
Article
ISSN
0014-3057

No coin nor oath required. For personal study only.

✦ Synopsis

Samples of DGEBA epoxy resins with diaminodiphenylmethane as curing agent are submitted for crosslinking to microwaves applied with continuous or pulsed regimes. The variations with time of temperature and of the associated dielectric loss show that the discontinuous process is more efficient then the continuous for activation of the step-growth polymerization. No difference is observed between the elastic moduli of the final products obtained in the two cases, indicating that their chemical structures are very similar.

📜 SIMILAR VOLUMES

Microwave curing of epoxy resins with di
Microwave curing of epoxy resins with diaminodiphenylmethane—III. Pulse frequency dependence in pulsed irradiation
✍ Nadir Beldjoudi; Albert Gourdenne 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 331 KB

Pulse frequency dependence of the emciency of the activation of crosslinking reactions of DGEBA epoxy~liaminodiphenylmethane mixtures by pulsed microwaves working at an electromagnetic frequency of 2.45 GHz, a ratio pulse length/pulse period of 1/5 and an average electrical power of 40 W, is studied

Microwave curing of epoxy resins with di
Microwave curing of epoxy resins with diaminodiphenylmethane—IV. Average electrical power and pulse length dependence in pulsed irradiation
✍ Nadir Beldjoudi; Albert Gourdenne 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 347 KB

A~tract--Pulse length dependence of the efficiency of the activation of curing reactions of epoxydiaminodiphenylmethane resins by pulsed microwaves (2.45 GHz) is studied at three pulse periods (1, 5 and 42 msec) or frequencies (1000, 200 and 23.8 Hz) previously revealed for a pulse length (r)/pulse