ISSN 1070-4272, Russian Journal of Applied Chemistry, 2014, Vol. 87, No. 8, pp. 1133−1139. © Pleiades Publishing, Ltd., 2014.
Original Russian Text © S.Yu. Gugina, V.P. Medvedev, 2014, published in Zhurnal Prikladnoi Khimii, 2014, Vol. 87, No. 8, pp. 1154−1160.
AND POLYMERIC MATERIALS
Use of Fluorinated Ethers of Glycerol
-Trihydroperﬂ uoroheptanol for Developing
Elastomers with Improved Technical and Operation
S. Yu. Gugina and V. P. Medvedev
Volgograd State Technical University, pr. Lenina 28, Volgograd, 400005 Russia
Received July 29, 2014
Abstract—The efﬁ ciency of using ﬂ uorinated ethers of glycerol and 1,1,7-trihydroperﬂ uoroheptanol for enhancing
the adsorption interaction of the oligomer with the ﬁ ller and for preparing materials with improved technical and
operation characteristics was demonstrated.
The presently used castable compounds based on
oligomeric rubbers exhibit insufﬁ cient resistance to heat
and hydrolysis because of insufﬁ cient compatibility of the
components of the urethane-forming system. An efﬁ cient
way to develop polydieneurethane (PU) elastomers
with improved operation characteristics is the use of
ﬂ uorinated organic compounds , including ﬂ uorinated
surfactants, which allows the resistance of the materials to
water to be enhanced and the distribution of the mineral
ﬁ ller in the polymeric matrix to be improved.
However, data on the use of fluorinated organic
compounds (FOCs) belonging to the group of glycerol
ethers of 1,1,7-trihydroperﬂ uoroheptanol and containing
two or more hydroxy groups are lacking. Such FOCs
can act as chain-extending (CEA) and branching (BA)
agents. In addition, the biphilic nature of the molecule is
a prerequisite for the manifestation of the surface activity.
In this study we examined how the fluorinated
branching and chain-extending agents affect the
parameters of the 3D network and the properties of cured
The base object of our studies was Krasol LBH-3000
low-molecular-weight butadiene rubber with the mean
molecular weight of 3000 and hydroxy group content
of 1%. Polymethylenepolyphenylene isocyanate [TU
(Technical Specification) 2224-152-04691277–96,
content of isocyanate groups 29% mean functionality
2.7) was used as curing agent, and glycerol (TU 6-09-05-
816–78) was used as branching agent. Dibutyltin dilaurate
was used as urethane formation catalyst.
Chalk of MTD-2 grade (TU 5743-008-05120542–96)
and talc [GOST (State Standard) 19729–74] were used
as ﬁ llers.
Products of the reaction of glycidol with 1,1,7-trihydro-
perﬂ uoroheptanol of structures P1 (M
= 406 g mol
480 g mol
) served as modiﬁ ers: