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International Journal of Trend in Scientific Research and Development (IJTSRD)
Special Issue on Innovative Development of Modern Research
Available Online: www.ijtsrd.com e-ISSN: 2456 – 6470

Thermal Conductivity of Composite

Materials Based on Crystallizing Polymers

3
О. Kh. Panjiev , О. N. Bozorov , E. Boboyorov , D. А. Rustamov
1
2
1
1 Candidate Tech Science & Associate Professor, Karshi Engineering Economic Institute, Karshi, Uzbekistan
2 Master of Karshi Engineering Economic Institute, Karshi, Uzbekistan
3 Student of Karshi Engineering Economic Institute, Karshi, Uzbekistan

ABSTRACT calculations and technology for obtaining PCM and their
The lack of a theory of thermal conductivity of polymer processing into products.
composite polymers and homopolymers makes it difficult
These materials use in the national economic sectors
to predict the thermophysical characteristics of newly
created polymer materials. Therefore, the issue of complex engaged in the production, processing and
operation of PCM products, as well as the results of
experimental study of heat transfer processes in
studying these materials TPP, ultimately saves the
polymers and materials based on them is relevant. The
material and energy resources of the country.
accumulation of experimental data on the thermophysical
characteristics of new polymeric materials differing in Among the fluorine-containing polymers class, there are
nature and structural features contributes to the those that are characterized by significantly higher
acceleration of the creation of the theory of their thermal performance properties than polytrifluorochlorethylene
conductivity. In this regard, this work presents an (PTFСHE), and therefore, are widely used now in various
approach to solving this problemby increasing the sectors of the national economy. Such polymers are
spectra of experimental methods and their theoretical polyvinylidene fluoride (PVDF) and its modification -
interpretation. modified polyvinylidene fluoride (PVDF-M).

KEYWORDS: thermophysical properties (TPP); the nature of These polymers are characterized by high resistance to
the thermal movement; heat transfer mechanism; polymer ionizing radiation, chemically aggressive media, and high
composite material (PCM); filler; fluctuation; dispersed temperature resistance, good dielectric and mechanical
phase; polymer matrix; thermal conductivity; electrical properties. Moreover, these materials have a relatively
conductivity; phonon mechanism simple molecular structure, a sufficiently high regularity of
the main molecular chain, and crystallize well, thus
The development and production of new composite forming sufficiently perfect crystal structures. The
materials with a set of specified properties is defined as crystallinity degree () and the crystalline formations size
one of the most important tasks of modern science. A can be varied within a fairly wide range. In addition, the
special place belongs to polymer composite materials structure at its various levels organization and the
(PCM), which often have a number of such important molecular mobility of unfilled PVDF are well studied [2-4].
performance characteristics that traditional materials for Based on this, it can be concluded that these polymers are
structural and other purposes do not possess [1]. promising as a binder for creating PCM.
One of the most important tasks of modern thermal The fillers effect on TPP polymer material is manifested in
physics and molecular physics is to establish the two ways. First, the presence of dispersed fillers particles
relationship between thermophysical properties (TPP), in in a polymer significantly affects its structure formation at
its various levels organization.
particular thermal conductivity ( ) of polymeric materials
In two-component composite material case, an important
with their structure at its various levels organization and
the thermal motion nature. This relationship knowledge factor is the quantitative relationship between the
volumetric content of polymer and filler in PCM. Volume
makes it possible to more deeply and comprehensively
content of filler in PCM:
analyze the heat transfer mechanism in polymer
composite materials (PC), which will help accelerate the = (1)
solution to the polymer materials obtaining problem with
predetermined TPPs. Providing polymer materials for the Where and - is the filler and polymer volume in the

growing needs of various industries and, first of all, composition, respectively. If the filler content in the
mechanical engineering, as well as the electrical industry,
composition is within, 0 < < 0,5, then in this case the
radio electronics and other branches of technology.
polymer acts as a forming medium. That is, the polymer
Knowledge of TPP PCM allows us to evaluate the products can be considered as a dispersion medium in which
behavior made of these materials in various operation dispersed filler particles are embedded.
modes, thereby increasing the service life and increasing
In the non-interacting components case of such a
the reliability of such products. Thermophysical
composite material, both components in them will be
characteristics of PCM and their components are the basis geometrically equal [1]. This means that the effective
for the scientific approach to thermal equipment
conductivity (in this case, thermal conductivity) of such

ID: IJTSRD39980 | Special Issue on Innovative Development of Modern Research Page 61