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JOURNALS // Chemical Physics and Mesoscopics // Archive

CPM, 2016 Volume 18, Issue 2, Pages 296–304 (Mi chphm280)

To thå theory of the curing kinetics and formation structure of the diepoxy-diamine systems with the formation the linear macromolecules

I. M. Sivergina, A. V. Bodulevb, S. M. Kireevaa, S. M. Usmanova

a Semenov Institute of Chemical Physics RAS, Moscow, Russia
b Birsk Branch Bashkir State University, Birsk, Russia

Abstract: The kinetic scheme of curing of diepoxy-diamine systems including 11 reactions is suggested. From the analysis of the scheme it follows that in dependence from the realization of some or other reactions the curing process of diepoxy-diamine system may proceed with the formation of linear epoxypolymer (the realization of reaction EG+PA), the branching epoxy macromolecules and three-dimensional epoxy polymers which are highly spread in life. We have worked out the program based on the Monte Carlo statistical method which allows in the frame of formation of unitary structural element (USE), to model the kinetics the USE development and the process of USE structural formations. By the analysis of the case of formation of linear epoxy-macromolecule it is shown that the reaction EG+PA) in the frame of formation USE proceeds as zero order reaction. The typical structure of the forming linear USE is presented (see figure) by fragmentary image.
chphm280_engl.png

The USE contents is possible to characterize by means of fragmentary (98P$_n$23II26VI, 49 fragments) and functionally (98P$_n$2Ý98ÂÀ98ÍÎ) formulas. Apparently USE contains different functional groups (secondary AG and other groups), that allows to use obtained linear USE for further chemical synthesis on the basis of USE. It is shown that in the case of the realization of many experiments granulometric distribution (GMD) is observed which is monomodal. The obtained USE is possible to use for preparing fibre, block and other articles.

Keywords: gross process, unitary structural element, diepoxy, diamine, cure kinetics, linear macrochain epoxypolymer, structural formation, granulometric distribution.

UDC: 541.127:541.64+678.6



© Steklov Math. Inst. of RAS, 2024