BCDEBiological Concept Diagram Editor (biomedical research)
BCDEBattery Charge Discharge Equipment (US NASA)
BCDEBureau of Communicable Disease Epidemiology (Public Health Agency of Canada)
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In this study, we have examined the influence of the chemical nature and content of various vegetable oils on the kinetics of the photocrosslinking of mixtures of an o-cresol novolac epoxy resin (CNE) with BCDE, as well as the final properties of the UV-cured coatings.
BCDE (Cyra-cure 6105) was supplied by Cytec, and the TAS (Cyracure UVI-6974) was purchased from Ciba Specialty Chemicals.
CNE, BCDE, TAS, and the plasticizers cashew nut shell oil (CNO), ESO, castor oil (CO), DOP were mixed in various proportions to obtain the mixtures containing different ratios of the constituents (Table 1).
Table 1: Constituents' ratio of investigated UV curable systems Samples number CNE BCDE Total epoxy WP mol/kg WP mol/kg mol/kg 1 50 0.
The IR spectra of various coatings based on CNE, BCDE, TAS, with and without plaslicizer, before and after 18 s UV exposure, are presented in Fig.
1]) curable systems CNE BCDE CNE + BCDE 1 3475-3516 -OH stretching * - * 2 ~3000 Stretching of aromatic * * * and epoxy ring 3 2847-2935 CH, [CH.
2 s After 18 s rate mol/kg (%) mol/kg (%) (mol/kg s) CNE + BCDE + TAS 1 0.
This can be explained by some difference in reactivity of BCDE and CNE epoxides toward the cationic polymerization.
Consequently, almost all of the molecules of CNE and BCDE were involved in the formation of the tridimensional polymer network.
The grams ABCD, BCDE, BCDK, PBCD, PBCE, and PBCK are maximal, the other grams become infrequent.
Finally, the set of maximal frequent sequences includes the sequences {ABCD, BCDE, BCDK, KLM, PBCD, HK, PBCE, PBCK}.