Classification of Disperse-Filled Polymer Composite Materials on the Basis of Lattice Type and Structure Principle

2020 ◽  
Vol 13 (3) ◽  
pp. 265-269
Author(s):  
I. D. Simonov-Emel’yanov
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Filled Polymer ◽  
Lattice Type

scholarly journals Classification of energy impacts by their effect on the structure and properties of reinforced reactoplasts

2021 ◽  
Vol 83 (2) ◽  
pp. 197-201
Author(s):  
I. V. Cheremukhina
Keyword(s):  
Composite Materials ◽  
Impact Strength ◽  
Polymer Composite ◽  
Polymer Composite Material ◽  
Polymer Chains ◽  
Polymer Composite Materials ◽  
Mesh Structure ◽  
Wave Nature ◽  
The Impact

The use of various physical influences is an economical and highly effective direction for regulating and improving the characteristics of the modified reinforced polymer composite materials developed in this work. The methods of energy effects studied in this work were used at the stage of impregnation of technical threads of various chemical nature with an oligomeric binder and a hardener (when preparing prepregs by the traditional method) or with a binder solution and a curing system (when preparing prepregs by the method of layered application of components) Based on the conducted research, a classification of the applied methods of physical modification according to the principle of the influence of energy fields is proposed. The studied methods of energy effects are divided into orienting and energetically energizing effects. The first group includes treatments with constant magnetic (PMP) or electric fields (PEP), and constant mechanical loads. The second group includes energy effects that have a wave nature (energetically energizing), and vibration, ultrasonic effects, and ultraviolet radiation are attributed to them. Modification methods of the first group contribute to a decrease in the mobility of binder molecules during curing, while the formation of branches of polymer chains occurs during the curing process, which leads to a predominant increase in the destructive stress during static bending. Energetically energizing effects contribute to the relative acceleration of the process of linear growth of polymer chains during curing, which is accompanied by the formation of a more sparsely cross-linked mesh structure, which leads to a predominant increase in impact strength. Of the two competing processes in the curing of epoxy oligomers, this one requires a higher activation energy, which is confirmed by the results of studies. Analyzing the results obtained, it can be concluded that the modification methods used in the work allow not only to obtain polymer composite materials with high strength characteristics, but also to directly adjust the properties of composites depending on the requirements for the products. Orienting modification methods lead to hardening of the resulting polymer composite material with a predominant increase in the destructive stress during static bending from 20 to 47%. When using energetically energizing influences in the technology of producing reinforced reactoplasts, the impact strength increases mainly from 19 to 40%.

Analysing dielectric interphase in carbon-black-filled polymer composite materials

2017 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Fouad Lahjomri ◽  
Yassine Nioua ◽  
Mohammed Essaid Achour ◽  
Salahddine El Bouazzaoui
Keyword(s):  
Composite Materials ◽  
Carbon Black ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Filled Polymer

High Power Switching Behavior in Conductor-Filled Polymer Composites

1997 ◽  
Vol 500 ◽  
Author(s):  
Anil R. Duggal ◽  
Lionel M. Levinson
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
High Power ◽  
Short Circuit ◽  
Polymer Composite Materials ◽  
Switching Behavior ◽  
Positive Temperature ◽  
Filled Polymer ◽  
Ptcr Effect

ABSTRACTIt has generally been assumed that the switching properties of conductor-filled polymer composites are based on a positive temperature coefficient of resistance (PTCR) effect where, at a certain switch temperature, the material resistivity increases by orders of magnitude. Here we present studies of the electrical switching behavior at high current densities which demonstrate that, in the high power regime, the observed switching is not based on the PTCR effect. Instead, we show that this type of switching appears to be a general feature in conductor-filled polymer composite materials and a qualitative model for the switching phenomenon is proposed. These results suggest that conductor-filled polymer composite materials can provide a new non-mechanical way of rapidly limiting high power short circuit currents. This should have broad applications in the circuit protection industry.

Physical and Chemical Fundamentals of Building the Structure of Dispersed Filled Polymer Composite Materials and Nanocomposites

2021 ◽  
Vol 899 ◽  
pp. 694-700
Author(s):  
Igor D. Simonov-Emelyanov ◽  
Ksenia I. Kharlamova
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Strength Characteristics ◽  
Polymer Composite Materials ◽  
Generalized Model ◽  
Filled Polymer ◽  
Dispersed Filler ◽  
Reduced Parameters ◽  
Maximum Proportion ◽  
Physical And Chemical

Questions of the construction of dispersed structures of polymer composite materials using a generalized model of dispersed filled polymer composite materials (DFPCM) are studied. Using the parameter of maximum proportion of filler (φm) allows you to take into account the size, shape, and distribution of part of the dispersed filler at the same time. The transition to generalized and specified parameters when describing the structure of the DFPCM leads to the possibility of highlighting the optimal criteria for obtaining systems with the highest strength characteristics. The transition to generalized and reduced parameters when describing the structure of DFPCM leads to the possibility of selecting optimal criteria that ensure obtaining systems with the necessary level of rheological, electrochemical, physico-mechanical and other characteristics.

Hybrid polymer composite materials. Part 1. Composition and properties

2019 ◽  
pp. 23-31
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Carbon Fibers ◽  
Hybrid Materials ◽  
Polymer Composite Materials ◽  
Hybrid Polymer ◽  
Hybrid Polymer Composite ◽  
Fibrous Fillers

Modern notions about hybrid polymer composite materials are discussed. The classification of the hybrid materials relative to their structure is presented, types of the most frequently used binders (thermo- and thermosetting plastics) are considered. Dispersed and fibrous fillers are analyzed. Glass, basalt, carbon fibers, and based on them fabrics and rovings are discussed in detail. Advantages of hybrid polymer composite materials compared with composites consisting of one type fibers and binders are noted.

scholarly journals Calculating the composition of dispersion-filled polymer composite materials of various structures

2020 ◽  
Vol 15 (1) ◽  
pp. 62-66
Author(s):  
Ch. N. Nguyen ◽  
M. V. Sanyarova ◽  
I. D. Simonov-Emel’yanov
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Polymer Composite ◽  
Filler Content ◽  
Polymer Composite Material ◽  
Polymer Matrices ◽  
Polymer Composite Materials ◽  
Filled Polymer ◽  
Different Types ◽  
Almost All

Objectives. The aim is to calculate the composition of dispersion-filled polymer composite materials with different fillers and structures and to highlight differences in the expression of said composition in mass and volume units.Methods. The paper presents the calculation of compositions in mass and volume units for various types of structures comprising dispersion-filled polymer composite materials according to their classification: diluted, low-filled, medium-filled, and highly-filled systems.Results. For calculations, we used fillers with densities ranging from 0.00129 (air) to 22.0 g/cm3 (osmium) and polymer matrices with densities between 0.8 g/cm3 and 1.5 g/cm3 , which represent almost all known fillers and polymer matrices used to create dispersion-filled polymer composite materials. The general dependences of the filler content on the ratio of the filler density to the density of the polymer matrix for dispersion-filled polymer composite materials with different types of dispersed structures are presented. It is shown that to describe structures comprising different types of dispersion-filled polymer composite materials (diluted, low-filled, medium-filled, and highly-filled) it is necessary to use only the volume ratios of components in the calculations. Compositions presented in mass units do not describe the construction of dispersion-filled polymer composite material structures because using the same composition in volume units, different ratios of components can be obtained for different fillers.Conclusions. The dependences of the properties of dispersion-filled polymer composite materials should be represented in the coordinates of the property – content of the dispersed phase only in volume units (vol % or vol. fract.) because the structure determines the properties. Compositions presented in mass units are necessary for receiving batches upon receipt of dispersion-filled polymer composite materials. Formulas are given for calculating and converting dispersion-filled polymer composite material compositions from bulk to mass units, and vice versa.

FSUE "VIAM" solvent-free binders for polymer composite materials

2016 ◽  
Vol 2 (2) ◽  
pp. 37-42 ◽  
Author(s):  
E. N. Kablov ◽  
L. V. Chursova ◽  
A. N. Babin ◽  
R. R. Mukhametov ◽  
N. N. Panina
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Solvent Free ◽  
Polymer Composite Materials
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