Name
Farion Ivan Alexandrovich
Scholastic degree
•
Academic rank
—
Honorary rank
—
Organization, job position
Baikal Institute for Nature Management SB RAS
Web site url
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Articles count: 1
A number of thermoreactive oligomers was obtained
via the Michael interaction of molar excesses of
hexamethylene-bis-maleimide with 5,5’-bisbenzotriazoles
in melt. The structure of them was
proved by the 13C spectroscopy method. The one-step
synthesis in melt, without by-products evolution, in
absence of organic solvents, additional reagents, and
catalysts is the more acceptable in point of view of
technology (a finished reaction product does not
require any purification). The process itself is the
nucleophile addition across double bond, and so it can
be attributed to the atom-saving technologies.
According to data of the dynamic scanning calorimetry
(DSC) and the thermogravimetry (TG), oligomers fuse
at 130.8–135.6 °С, cross-link at 185–250 °С, and begin
their thermal destruction in air at temperatures of 400–
420 °С. The tensile strength at shear of the glued joints
on base of oligomers (steel plates overlapped) is 14.2–
23.7 MPa (142–237 kgf/cm2
). The positive effect from
the introduce of 5,5’-bis-benzotriazolyl fragments into
structure of bismaleimide thermoreactive oligomers on
strength of the glued joints between metal plates was
revealed