Russian Journal of Applied Chemistry, 2011, Vol. 84, No. 5, pp. 803−810.
Pleiades Publishing, Ltd., 2011.
Original Russian Text © N.V. Shel’, A.O. Golovchenko, V.I. Vigdorovich, L.E. Tsygankova, 2011, published in Zhurnal Prikladnoi Khimii, 2011, Vol. 84,
No. 5, pp. 773−780.
AND CORROSION PROTECTION OF METALS
Zinc-Filled Oil-Based Preserving Materials Modiﬁ ed
with Carbon Additives
N. V. Shel’
, A. O. Golovchenko
, V. I. Vigdorovich
, and L. E. Tsygankova
Tambov State Technical University, Tambov, Russia
Derzhavin State University, Tambov, Russia
Received September 7, 2010
Abstract—Protective efﬁ ciency of preservation materials based on spent motor oil and unreﬁ ned rapeseed oil
with a zinc ﬁ ller and additions of micrographite or multilwalled carbon nanotubes was studied.
A wide assortment of anticorrosive preservation
formulations based on various compounds is known .
However, many of these are not manufactured now or are
too viscous and lead to gross technological and energy
expenditure because their deposition requires heating to
90–100°C. In addition, their protective efﬁ ciency is, as
a rule, due to presence of introduced inhibitors, which
are occasionally rather deﬁ cient, but fail to provide any
additional protective effect. Zinc-ﬁ lled paint-and-varnish
formulations, which require no represervation, contain
various binders, and have a protective capacity due to
the protector effect, are known as efﬁ cient protective
materials [2–5]. The content of zinc in these materials
is 90–95%  (here and hereinafter the mass percentage
is given) and their protective effect is determined by the
protector inﬂ uence of zinc as an effective anode [3, 4].
To maintain a high protective efﬁ ciency with oil-
based coatings, which enable easy depreservation and
represervation, it is necessary to introduce no less than
75% microstructured zinc . Additional introduction
of 4% microstructured graphite makes it possible to
diminish the content of zinc in a spent motor oil used as
a binder to 60 wt % .
Our communication considers the possibility of
lowering the concentration of microstructured zinc in
the oil binder in the presence of microstructured graphite
(MG) or multiwalled carbon nanotubes (MCNT)
replacing graphite in the same concentration.
The goal of our study was to examine the protective
efﬁ ciency of formulations based on an ecologically
clean and rapidly renewable rapeseed oil and spent
motor oil, ﬁ lled with a zinc powder and carbon additives
(micrographite or MCNT).
This approach makes it possible to assess the
possibility of utilization of spent motor oils (SMOs),
with valuable protective properties created, instead
of obtaining poor-quality motor fuels with increased
content of polychlorodiphenyls (only up to 5 wt % of
SMOs is used for this purpose, with the rest eliminated
); to determine the expediency of use as a binder of
renewable ecologically clean vegetable raw material
(rapeseed oil); and consider the possibility of a positive
nanosize effect of multiwalled carbon nanotubes,
manifested in an increase in the protective efﬁ ciency of
the formulations under study.
Electrochemical measurements (P5827M potentio-
stat, silver chloride reference electrode) and corrosion
tests were made on St.3 carbon steel of composition
(%): C 0.2, Mn 0.5, Si 0.15, P 0.04, S 0.05, Cr 0.30, Ni
0.20, Cu 0.20, and Fe 98.36, in a mineralized chloride
medium (30 g l
NaCl), acidiﬁ ed with HCl to pH 3 and
4 when necessary. A three electrode cell made of Pyrex