RESEARCH OF STRUCTURAL CHANGES IN EXPLOSIVE PRESSING OF POLYMERIC COMPOSITE BLENDS

The method of X-ray diffraction analysis was used to study polymer composite materials with a hybrid matrix in the form of blends of thermoplastic polymers of polytetrafluoroethylene PTFE with rigid high-temperature resistant polyarylate PA filled with molybdenum disulfide after explosive pressing with a pressure of 0.9-4.6 GPa. The studies were carried out with the aim of developing the technology of explosive pressing of polymer composite materials with a hybrid matrix, filled with molybdenum disulfide, with increased strength and antifriction properties.

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STRUCTURING OF CURED POLYMERIC COMPOSITE MATERIALS IN A MICROWAVE ELECTROMAGNETIC FIELD

Spravochnik Inzhenernyi zhurnal ◽

10.14489/hb.2021.01.pp.003-009 ◽

2021 ◽

pp. 3-9

Author(s):

I. V. Zlobina

Keyword(s):

Electromagnetic Field ◽

Composite Materials ◽

Polymer Composite ◽

Contact Interaction ◽

Energy Systems ◽

Polymeric Composite ◽

Strength Characteristics ◽

Polymer Composite Materials ◽

Reinforcing Fibers ◽

The Matrix

Based on studies of the microstructure of the matrix of cured polymer composite materials and the area of its contact interaction with reinforcing fibers, the hypothesis of its structuring in the microwave electromagnetic field with an increase in the contact interaction surfaces due to an increase in the number of agglomerates with small transverse dimensions and a decrease in porosity in the macro- and mesopore regions is substantiated. These effects can be used as a basis for increasing the strength characteristics and uniformity of their values after exposure to a microwave electromagnetic field. The results of this work can be used in the development of technologies for finishing hardening of products made of carbon and fiberglass for various transport and energy systems.

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DEVELOPMENT OF POLYMERIC COMPOSITE MATERIALS BASED ON THERMOPLASTIC ELASTOMERS

Bulletin of Belgorod State Technological University named after V G Shukhov ◽

10.12737/22761 ◽

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.

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RESEARCH OF THE CRYSTALLINE STRUCTURE OF POLYMERIC COMPOSITE MIXTURES AFTER EXPLOSIVE PRESSING

IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY ◽

10.35211/1990-5297-2020-4-239-23-27 ◽

2020 ◽

pp. 23-27

Author(s):

N. A. Adamenko ◽

G. V. Agafonova ◽

D. V. Savin ◽

A. I. Bogdanov ◽

D. A. An ◽

...

Keyword(s):

Molecular Weight ◽

Composite Materials ◽

Aluminum Oxide ◽

Polymeric Composite ◽

X Ray Diffraction ◽

X Ray ◽

Antifriction Properties ◽

Ultra High Molecular Weight ◽

Explosive Pressing ◽

Pressing Technology

The method of X-ray diffraction analysis was used to study polymer composites based on thermoplastic polymers of ultra-high molecular weight polyethylene UHMWPE with β-sialon and polytetrafluoroethylene PTFE with aluminum oxide Al2O3 after static and explosive pressing. The studies were carried out with the aim of developing explosive pressing technology for polymer composite materials with enhanced strength and antifriction properties.

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

Technology of metals ◽

10.31044/1684-2499-2021-0-10-28-34 ◽

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.

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