ISSN 1070-4272, Russian Journal of Applied Chemistry, 2017, Vol. 90, No. 2, pp. 267−276. © Pleiades Publishing, Ltd., 2017.
Original Russian Text © A.S. Mostovoi, E.A. Kurbatova,
2017, published in Zhurnal Prikladnoi Khimii, 2017, Vol. 90, No. 2, pp. 246−256.
AND POLYMERIC MATERIALS
Controlling the Properties of Epoxy Composites Filled
with Brick Dust
A. S. Mostovoi and E. A. Kurbatova
Engels Institute of Technology, Branch of the Saratov State Technical University,
pl. Svobody 17, Engels, Saratov oblast, 413100 Russia
Received January 20, 2017
Abstract—Treatment of the ﬁ ller surface with a silane dressing agent, ensuring the chemical interaction on the
ﬁ ller–binder interface, and ultrasonic treatment of the compound enhance the physicomechanical properties of the
epoxy composite: The failure stress and bending elastic modulus increase by a factor of 2–3. Considerable (2.5-
fold) increase in the impact resilience even at 50% ﬁ lling should be particularly noted. Introduction of modiﬁ ed
brick dust enhances the heat resistance and thermal conductivity of the epoxy composite.
Epoxy resins are the most widely used and versatile
resins. They are among the best kinds of binders used
in production of composite materials. These resins
exhibit the highest performance in virtually all respects.
The advantages of epoxy resins are their resistance to
halogens, acids, and alkalis, high adhesion to the majority
of ﬁ llers and reinforcing materials, and good electrical
insulation properties. The chemical reaction between
the epoxy resin and curing agent is not accompanied by
the release of water or any other volatiles. Epoxy resins
exhibit extremely low shrinkage compared to phenol
and ester resins [1–12].
Composites based on epoxy resins are used in pro-
duction of bearing structural elements of buildings, of
structural protective, waterprooﬁ ng, and decorative coat-
ings, in construction of ﬂ oors, as plaster coatings with
specialty properties, and in repair of road pavements.
These composites are efﬁ ciently used in reconstruction
and repair of buildings, in restoration and reinforcement
of building structures, in junction of assembled units,
and in protection of structures from the impact of the
One of advantages of epoxy resins is the possibility
of diverse structural modiﬁ cations to enhance the
performance of epoxy polymers and composites based
on them. The most widely used are physicochemical
methods for modifying the structure of epoxy polymers:
introduction of ﬁ llers, plasticizers, surfactants, and other
modiﬁ ers, so as to obtain materials with the required set
of operation properties [1–12].
Filling is the most widely used and highly efﬁ cient
procedure for controlling the properties of epoxy
polymers, enhancing their mechanical strength, rigidity,
chemical durability, heat resistance, and dielectric
properties [2, 5, 6–10].
This study was aimed at modiﬁ cation of epoxy resin
in the formulation step to enhance the physicochemical
and mechanical properties using high-performance
ﬁ ller, brick dust, which is a large-tonnage waste from
production of ceramic bricks.
We developed formulations based on ED-20
epoxy–4,4'-isopropylidenediphenol resin [GOST (State
Standard) 10587–93]. Polyethylenepolyamine [PEPA,
TU (Technical Speciﬁ cation) 6-02-594–85] was used as
curing agent. It is capable to form the three-dimensional
network structure without heating.
To plasticize the epoxy composites and reduce
their combustibility, we used tricresyl phosphate