Russian Journal of Applied Chemistry, 2013, Vol. 86, No. 4, pp. 469−474.
Pleiades Publishing, Ltd., 2013.
Original Russian Text © I.A. Polunina, A.V. Ul’yanov, K.E. Polunin, A.K. Buryak, 2013, published in Zhurnal Prikladnoi Khimii, 2013, Vol. 86, No. 4, pp.
AND INDUSTRIAL INORGANIC CHEMISTRY
Thermal Resistance of Composites Based
on Nanodispersed Aluminum
I. A. Polunina, A. V. Ul’yanov, K. E. Polunin, and A. K. Buryak
Frumkin Institute of Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia
Received December 18, 2012
Abstract—Thermolysis of low and high molecular aliphatic carboxylated compounds in composite systems based
on nanosized aluminum were studied by the thermal desorption mass spectrometry. The conditions for maximal
separation of the thermolysis products and their composition were determined. The kinetic parameters of thermal
desorption and thermal degradation of the modiﬁ ers were calculated. Differences in the thermal stabilities of the
polymer composites based on nanosized aluminum and different modiﬁ ers (carboxylated divinyl and divinyl
nitrile oligomers) were presented.
Carboxylated low and high molecular weight organic
compounds are often used for development of nanosized
metal and oxide composites. Aliphatic carboxylic acids
are employed as dispersants, thickeners, modifiers,
binders, and stabilizers for organic dispersions of met-
als [1, 2]. The practical use, processing, and storage of
the composites are largely determined by their thermal
stability, which is also responsible for the degradation
rate during operation.
Predicting, using only the literature data, the effect
exerted by metallic ﬁ ller on the thermal stability of
composite systems and materials is almost impossible.
This is because, according to the literature data [1–3], the
chemical and thermal stability of metal-based composites
in the presence of metallic ﬁ ller increases, whereas that
of colloidal dispersions, especially aqueous dispersion,
decreases. In each speciﬁ c case, the thermal stability of
the composites is determined by the properties of their
constituents and the type of interfacial interaction. An
increase in the thermal stability of polymer composites
is often associated with the formation of strong links be-
tween their constituents and by a decrease in the kinetic
mobility of the macromolecules of polymeric binders
immobilized on the surface of pigments and ﬁ llers.
The thermal analysis methods provide important
information about the physical and chemical properties
of composite materials, such as purity, moisture thermal
stability, and compatibility, and are widely used for
quality control of materials [4, 5]. The most informative
method suitable for determination of composition of the
thermolysis products and trace amounts of impurities
on the surface of the solid phase, study of desorption
and degradation kinetics of modiﬁ er and evaluation of
thermal stability of the composite systems is the thermal
desorption mass spectrometry (TDMS) .
We studied the thermal stability of the composite
systems based on nanosized aluminum and carboxylated
low and high molecular weight organic compounds. The
kinetic parameters of the desorption and degradation of
the binders and modiﬁ ers were calculated and the ef-
fect of a ﬁ ller on the thermal stability of the composites
was determined. The thermolysis data for pure organic
compounds and for the same compounds immobilized
on the surface of nanosized aluminum were compared.
The character of the ﬁ ller effect on the thermal stability
of the composite systems was analyzed.
As ﬁ ller served dispersed aluminum synthesized by