Russian Journal of Applied Chemistry, 2010, Vol. 83, No. 8, pp. 1352−1354.
Pleiades Publishing, Ltd., 2010.
Original Russian Text
V.V. Tereshatov, Zh.A. Vnutskikh, M.A. Makarova, 2010, published in Zhurnal Prikladnoi Khimii, 2010, Vol. 83, No. 8, pp. 1246−1248.
Properties of Calcium Fluoride-Filled
Cross-Linked Plasticized Polyurethane
V. V. Tereshatov, Zh. A. Vnutskikh, and M. A. Makarova
Institute of Technical Chemistry, Ural Division, Russian Academy of Sciences, Perm, Russia
Received April 7, 2010
Abstract—Thermal and physicomechanical properties of plasticized polyurethane based on oligo(butadiene)diol
prepolymer and oligoethertriol were examined as inﬂ uenced by microdispersed calcium ﬂ uoride. Introduction of
this ﬁ ller substantially improved the physicomechanical properties of the polyurethane compositions.
An integral part of development of highly efﬁ cient
technologies, along with designing and preparing new
promising materials, is waste utilization. Environmentally
safe disposal or utilization of waste from production of
organics, in particular, halogenated polymeric materials,
ranks among the most important challenges faced by
modern materials science. In this context, a promising
technique is offered by thermal processing of ﬂ uorinated
materials in the presence of alkaline-earth metal oxides
and hydroxides. Vnutskikh et al. [1, 2] showed that the
highest reactivity among them is exhibited by calcium
oxide (hydroxide). It enables virtually exhaustive binding
of ﬂ uorine into calcium ﬂ uoride at comparatively not
very high temperatures of 450–550°С.
Waste utilization in the case of materials of interest
represents a multifaceted task incorporating the use
of the thermal processing products in new functional
composites based on various binders, e.g., polyurethanes
(PUs) possessing high elasticity and wear and frost
resistances, as well as other valuable properties.
Previous studies [3–7] were concerned with the
behavior of PUs comprising a number of ﬁ llers: silicon
oxide, metal oxides, metals, glass sphere, and graphite.
It was found that these ﬁ llers beneﬁ cially affect the
polyurethane composites in terms of improving their
physicomechanical properties, increasing electric conduc-
tivity, and providing high density. At the same time, the
properties of calcium ﬂ uoride-ﬁ lled materials were not
Here, we examined the properties of polyurethane
compositions based on plasticized polyurethane binder,
containing different amounts of calcium ﬂ uoride.
We examined cross-linked plasticized polyurethane
prepared by curing oligo(butadiene diisocyanate) based on
oligo(butadiene)diol (М ~ 2000), SKU-DF-2 prepolymer
(М ~ 2400), with trifunctional oligoether containing
primary hydroxy groups Laprol 5003-2B-10 [addition
product of poly(propylene oxide), trimethylolpropane,
and ethylene oxide; M ~ 5000].
As plasticizer served di(2-ethylhexyl)sebacate
(DEHS) (20 wt% in the polyurethane composition) with
the glass transition temperature of –106°C. The material
preparation was catalyzed by iron(III) acetylacetonate
preliminarily dissolved in Laprol. The samples were
cured for 3 days at 80°C. The degree of conversion of
NCO groups was controlled by Fourier-transform IR
spectroscopy. The ﬁ ller (calcium ﬂ uoride) content in the
reaction mass was varied from 10 to 40%.
Activation and dispersion of pure-grade crystalline
calcium ﬂ uoride was carried out in an Activator-2SL
planetary mill for 30 min at the rpm speed of 800. This
yielded powdered calcium ﬂ uoride with the speciﬁ c
surface area of 15 m
[as measured with an ASAP
2020 Micromeritics (US) instrument].