Russian Journal of Applied Chemistry, 2009, Vol. 82, No. 6, pp. 1114−1116.
Pleiades Publishing, Ltd., 2009.
Original Russian Text
V.V. Tereshatov, V.Yu. Senichev, S.F. Krasnosel’skikh, M.A. Makarova, I.S. Lamzina, 2008, published in Khimicheskaya Promyshlennost’,
2008, Vol. 85, No. 8, pp. 392−394.
TECHNOLOGY OF ORGANIC
AND INORGANIC CHEMISTRY
High-Dense Polymeric Compositions Based
on the Thermoplastic Polyuretanes
V. V. Tereshatov
, V. Yu. Senichev
, S. F. Krasnosel’skikh
, M. A. Makarova
and I. S. Lamzina
Institute of Technical Chemistry, Ural Branch of Russian Academy of Sciences, Perm, Russia
Central Scientiﬁ c and Research Institute of Chemistry and Mechanics, Moscow, Russia
Received September 13, 2008
Abstract—-The results of investigating the properties of high-dense pollution-free hybrid composites on the basis
of the new type of polyurethane thermoplastics with the low-melting diurethane plasticizer are represented. The
material is shown appropriate for the processing at low temperature. Strengthening of such materials is shown
caused by the crystallization of the low-melting plasticizer.
basis of oligotetramethyleneoxidediol with molecular
weight 1000, diphenylmethane diisocyanate (MDI)
and butanediol by a two-step procedure. During the
first step (80°C, 4 h) was carried out the reaction
of oligotetramethyleneoxidediol with MDI at the
diizocyanate–diol mole ratio 2.5 : 1. In the second step
(after the analysis of the obtained pseudo-prepolymer for
the content of free NCO groups) into the composition
was introduced the melted diurethane plasticizer (30%
of the mass of the unﬁ lled composition) and then added
butanediol-1,4. In the experiences the calculated ratio
of NCO and OH groups was 0.95 (for TPU-1) and 0.8
(for TPU-2). As the plasticizer into the composition was
introduced in the melted form dibutyl(4-methylbenzyl-
1,3-diyl)biscarbamate (BT), obtained by the reaction of
2,4-toluilenediizocyanate with butanol [3, 4]. As the ﬁ llers
was used powdered tungsten of the fractions 0.8, 6, and
80 μm. It was introduced into the composition also at the
second step of obtaining TPU.
The samples were solidiﬁ ed at 80
С during 2 days.
Mechanical characteristics were determined according
to GOST 270-75. Calorimetric study of the solidiﬁ ed
samples was carried out by the DSK method on a Mettler-
Toledo 822 instrument with the rate of scanning 3°C/min.
The thermomechanical analysis was carried out on the
A number of the basic applications of lead is connected
with its high gravimetric density (ammunition, the
elements of radiation shielding, loads for the balancing,
etc). Only in Russia hundreds ton per year of this highly
toxic metal are expended to these purposes .
The task of replacing the toxic dense metal lead by the
pollution-free composites can be solved by creation of
the highly ﬁ lled materials, which contain microdisperse
tungsten, whose density 1.7 times higher than density
As a bonding agent for the highly ﬁ lled composites
can be used thermoplastic polyurethanes (TPU) with the
low-melting plasticizers diuretanes, the products of the
reaction of diisocyanates with alcohols. Diurethanes are
crystalline substances with melting temperature from 46
to 50°C. They are thermodynamically compatible with
polyuretanes and can be used as the plasticizers [2, 3].
The purpose of the work was a study of the properties of
the dense thermoplastic composites with the low-melting
plasticizer, ﬁ lled with microdisperse tungsten.
As the object of studies are used the samples of
thermoplastic polyurethane (TPU), synthesized on the