scholarly journals A new class of reinforcing additives for polymer composite materials

2021 ◽  
Vol 2131 (4) ◽  
pp. 042029
Author(s):  
M Boiko ◽  
T Boiko
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Spinel Structure ◽  
Mixed Oxides ◽  
Sol Gel ◽  
Specific Interaction ◽  
Water Soluble ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Particle Sizes

Abstract The work is devoted to the development of a method for obtaining new environmentally friendly reinforcing additives for polymer composite materials - xerogels of mixed oxides of transition metals. A method for obtaining nanosized particles of iron and manganese xerogels from true solutions by particle coarsening as a result of a redox reaction has been investigated. The use of sol-gel technology made it possible to obtain xerogels containing particles with a spinel structure. Cationic, anionic, and neutral water-soluble polymers were used to stabilize particle sizes during synthesis. The fractional composition of xerogel nanoparticles has been investigated. It is shown that when using cationic polymers, spinels are formed with the smallest particle sizes and a narrow dispersion of the size distribution. The obtained nanosized transition metal oxides with a spinel structure are planned to be used for reinforcing composite polymer materials in order to improve the mechanical and tribotechnical properties of the composites. Modification of phenylone with ultradispersed spinel particles makes it possible to increase the tribological characteristics of composites due to the formation of a friction film on the tribocontact as a result of the specific interaction of reinforcing additives with friction surfaces. The proposed method for the synthesis of reinforcing additives is characterized by simplicity of implementation, availability of reagents, high productivity and good repeatability of results.

scholarly journals DEVELOPMENT OF POLYMERIC COMPOSITE MATERIALS BASED ON THERMOPLASTIC ELASTOMERS

2016 ◽  
Vol 1 (12) ◽  
pp. 195-199
Author(s):  
Прут ◽  
Eduard Prut ◽  
Черкашина ◽  
Natalya Cherkashina ◽  
Ястребинская ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Filler Content ◽  
Sol Gel ◽  
Polymeric Composite ◽  
Thermoplastic Elastomers ◽  
Polymer Composite Materials ◽  
Dynamic Vulcanization ◽  
The Matrix ◽  
Materials Used

This paper presents data on the development of polymer composite materials based on thermoplastic elastomers. As starting materials for the synthesis of the matrix components were selected as follows: isotactic polypropylene and ternary ethylene-propylene-diene elastomer (EPDM). Diene component in EPDM are ethylidene norbornene composition in an amount of 4-5%. Dynamic vulcanization was carried out using the elastomer element sulfur. The filler polymer composite materials used silica gel with dimethyl polysiloxane. Synthesis was carried out by filling the sol-gel technology. The filler content in the composite varied from 10 to 80% by weight. Mixing of filler and the matrix was performed in a laboratory twin-rotor mixer, type "Brabender". It is found that the maximum possible filler content of the matrix used was 80%. With the introduction of more filler mixing of the components it has been difficult. When the filler content from 10 to 70% of parameters such as tensile strength, flexural strength and modulus of longitudinal elasticity increasing and administered at higher filler and 80 wt%. markedly reduced. Thus, it can be concluded that the content of filler in the composite is 70%. Further research should be directed to the evaluation of the radiation resistance of the developed composite materials.

scholarly journals Energy-saving technology of production of elements of building structures from polymer materials

2021 ◽  
pp. 41-48
Author(s):  
A.V. Kondratiev ◽  
О.О. Prontsevych
Keyword(s):  
Composite Materials ◽  
Energy Saving ◽  
Polymer Composite ◽  
Technological Process ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Gas Evolution ◽  
Curing Process ◽  
Structural Elements ◽  
Energy Saving Technology

Problem statement. At present, the increase in the efficiency of the technology for the production of composite structural elements is associated with high energy costs. In this regard, the implementation of ways to optimize the parameters of the technological process of manufacturing polymer composite materials is of great importance. The purpose of the article is to optimize the modes of impregnation and curing of thermosetting binders and polymer composite materials based on them in combination with the kinetics of gas evolution and control of all stages of the technological process. Results. An energy-saving technology for molding composite structural elements of buildings and structures has been developed, which provides a reduction in the duration of the curing process of polymer materials, depending on the type of binder. The technology makes it possible to control the speed and degree of curing of a thermosetting binder by changing the tangent of the dielectric loss angle and electrical conductivity. Scientific novelty and practical significance. The approach and the electrophysical method for optimizing the modes of impregnation and curing of composite products in combination with the control of all stages of the technological process have been further developed in relation to the elements of composite structures. The permissible values of the curing parameters have been established according to the optimized mode of a number of thermosetting binders: heating rates, isotherm temperatures, and holding time at them. At the same time, the achieved optimal curing times for binders BFOS, LBS-4, ENFB, 5-211B using the new technology is 2.4; 1.8; 3.0; 2.3; 2.0 and 1.2 times less than according to known technologies. The results obtained guarantee the quality of the resulting composite product and are recommended for accelerating the curing process of polymer materials. Keywords: optimization; technological regime; impregnation; curing; thermosetting binders; gas evolution; stage control

Study of the English Translation of Polymer Composite Materials

2013 ◽  
Vol 416-417 ◽  
pp. 1712-1716
Author(s):  
Gang Li
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
English Translation ◽  
Building Materials ◽  
Civil Engineering ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Translation Theory ◽  
Chemical Fiber ◽  
Translation Practice

Synthetic polymer material is made of polymer composite materials. Plastic, rubber, chemical fiber, building glue and paint are mainly involved in civil engineering. The basic components of the polymer materials are synthetic polymers, which is referred to as superpolymer. Materials of civil engineering made from the polymer or the traditional material modified the preparations are traditionally known as the chemical building materials. Chemical building materials is more and more widely applied in civil engineering, playing an important role in various decorations, waterproof, anticorrosive adhesive, as other civil engineering materials can not be replaced by. The English translation of critical polymer materials is vital, and the translation quality has a direct impact on people's understanding of it. In this paper, using the method of Nord's function plus loyalty translation theory, the author discusses the translation problems of polymer materials, and provides constructive and theoretical basis for translation practice.

scholarly journals Polymer Composite Materials And Applications For Chemical Protection Equipments

2015 ◽  
Vol 21 (3) ◽  
pp. 873-877
Author(s):  
Răzvan Petre ◽  
Nicoleta Petrea ◽  
Gabriel Epure ◽  
Teodora Zecheru
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Polymeric Matrix ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Chemical Protection ◽  
Stiffness Properties ◽  
Wide Range ◽  
Fibre Reinforced Polymer ◽  
Strength And Stiffness

Abstract The polymer composite materials properties are clearly determined by their constituent properties and by the micro-structural configuration. Additives and modifiers ingredients can expand the usefulness of the polymeric matrix, enhance the processability or extend composite durability. The fibres are mainly responsible for the performance changing (strength and stiffness properties). The least structurally demanding cases is the arrangement of fibres randomly in polymeric matrix, when equal strength is achieved in all directions. Fibre reinforced polymer materials can be successfully used in a wide range of applications and can significantly improve the characteristics of chemical protection equipments and foster the development of new ones with superior features.

Formation of mechanical properties of polymer composite materials with different types of hybrid matrices

2021 ◽  
pp. 28-34
Author(s):  
E. A. Kosenko ◽  
◽  
P. E. Demin ◽  
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Polymer Composite ◽  
Strength Properties ◽  
Polymer Composite Material ◽  
Polymer Materials ◽  
Polymer Composite Materials ◽  
Hybrid Matrix ◽  
The Matrix

The mechanical properties of polymer composite materials largely depend on the interfacial phenomena occurring on the interface between the matrix and reinforcing material. The addition of components to the matrix of polymer composite materials that retain their viscoelastic state during the molding process of the products makes possible to locally change the deformation-and-strength properties of a finished product, adapting it to the specified operating conditions. The viscoelastic components in the hybrid matrix form the third phase of the polymer composite material. Increasing the efficiency of interfacial layers of polymer composite materials with various types of hybrid matrices is the most important task of their development. The samples for microanalysis of the polymer composite material structure with various types of hybrid matrices were molded using the prepreg technology by vacuum molding on the basis of BT400 biaxial basalt fabric. Technical wax, anaerobic (Loctite 638) and organosilicon (Yunisil-9628) polymer materials were selected as the viscoelastic components of the hybrid matrix. In order to explain the reasons for the change in the deformation-and-strength properties of the obtained basalt plastics with various viscoelastic components in the composition of the hybrid matrix, microanalysis of their structure was carried out. A mechanism for choosing a scheme for the location of viscoelastic components in a matrix of polymer composite materials based on the provisions of combinatorial optimization is described.

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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