scholarly journals STUDY OF THE STRUCTURE OF HIGHLY FILLED FLUOROPLAST-ALUMINUM COMPOSITES

2020 ◽  
pp. 25-29
Author(s):  
N. A. Adamenko ◽  
A. V. Kazurov ◽  
D. V. Savin ◽  
G. V. Agafonova ◽  
A. S. Ageikin
Keyword(s):  
Structure Formation ◽  
Metal Particles ◽  
Aluminum Composites ◽  
Monolithic Material ◽  
Adhesive Interaction ◽  
Metal Frame ◽  
Static Pressing ◽  
Dispersed Aluminum ◽  
Explosive Pressing

Structure formation in fluoroplastic-aluminum composites obtained by static and explosive pressing has been investigated. The concentration of dispersed aluminum was 50 and 70% vol. In fluoroplastic-aluminum composites, after static pressing, spalling of metal particles, formed during the preparation of a microsection, was found, which indicates low adhesion of the polymer and metal. The production of fluoroplastic-aluminum composites using explosive pressing leads to the formation of a monolithic material with a high adhesive interaction of the components and the formation of a metal frame.

Study of structure formation in aluminum filled polytetrafluoroethylene after explosive compression

2021 ◽  
pp. 26-32
Author(s):  
Nina Adamenko ◽  
Andrej Kazurov ◽  
Dmitry Savin ◽  
Galina Agafonova ◽  
Keyword(s):  
Structure Formation ◽  
Adhesive Bond ◽  
Metal Particles ◽  
Polymer Layer ◽  
Aluminum Fluoride ◽  
Interfacial Separation ◽  
Static Pressing ◽  
Explosive Pressing

The features of the structure formation in polytetrafluoroethylene filled with 10 and 30% (vol.) aluminum after static and explosive pressing have been studied. It was revealed that after static pressing during sintering, interphase separation occured, which is confirmed by the formation of structures of the «closed buds» type. After explosive pressing with sintering, fibrils between polytetrafluoroethylene and aluminum and a polymer layer covering metal particles were found, and there was no interfacial separation that indicates the formation of a strong adhesive bond and is confirmed by the formation of aluminum fluoride.

scholarly journals RESEARCH OF FEATURE OF STRUCTURE FORMATION IN PTFE-ALUMINUM COMPOSITE MATERIALS DURING SINTERING

2020 ◽  
pp. 42-46
Author(s):  
N. Adamenko ◽  
A. Kazurov ◽  
D. Savin ◽  
G. Agafonova
Keyword(s):  
Composite Materials ◽  
Structure Formation ◽  
Free Volume ◽  
Closed Volume ◽  
Aluminum Composite ◽  
Interfacial Separation ◽  
Lower Porosity ◽  
Static Pressing ◽  
Dispersed Aluminum

The structure formation in fluoroplastic-aluminum composite materials during sintering after static pressing was studied. The concentration of dispersed aluminum was 30% vol.. After sintering, interfacial separation was observed in the fluoroplastic-aluminum composite materials, which is formed during crystallization due to shrinkage, which indicates a low adhesion of the filler to the polymer. Sintering of composite materials in a closed volume leads to the formation of a material with a lower porosity than when sintering in a free volume.

scholarly journals RESEARCH OF THERMOMECHANICAL PROPERTIES OF UHMWPE AND ITS COMPOSITE WITH QGP AFTER EXPLOSIVE COMPRESSION

2021 ◽  
pp. 30-33
Author(s):  
N. A. Adamenko ◽  
G. V. Agafonova ◽  
D. A. An ◽  
A. V. Kazurov ◽  
V. S. Pirozhenko
Keyword(s):  
Thermal Deformation ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Graphite Powder ◽  
High Heat ◽  
Thermomechanical Properties ◽  
Adhesive Interaction ◽  
Industrial Processing ◽  
Ultrahigh Molecular Weight ◽  
Composite Mixture ◽  
Explosive Pressing

To develop the technology of explosive pressing of ultrahigh molecular weight polyethylene (UHMWPE) and its powder composite mixtures with inorganic fillers, the thermomechanical properties of an unfilled polymer and a composite containing 3% coke graphite powder (KGP) after explosive pressing were studied. It was found that explosive pressing with a pressure of 0.25-1.3 gpa provides high heat resistance of UHMWPE and the studied composite (154-156 °C), and the filler restrains the thermal deformation expansion of the polymer, which is associated with increased intermolecular and adhesive interaction at the phase boundary. Thus, the method of explosive pressing can be recommended for industrial processing of UHMWPE and its composite mixture with 3 % KGP.

scholarly journals STUDY OF THERMOMECHANICAL PROPERTIES OF UHMWPE

2021 ◽  
pp. 30-33
Author(s):  
N. A. Adamenko ◽  
G. V. Agafonova ◽  
D. A. An ◽  
A. V. Kazurov ◽  
V. S. Pirozhenko
Keyword(s):  
Molecular Weight ◽  
Heat Resistance ◽  
Graphite Powder ◽  
High Heat ◽  
Thermomechanical Properties ◽  
High Heat Resistance ◽  
Similar Material ◽  
Ultra High Molecular Weight ◽  
Static Pressing ◽  
Explosive Pressing

The paper presents comparative studies of the thermomechanical properties of ultra-high molecular weight polyethylene (UHMWPE) and its composite containing 0.5% coke-graphite powder (CGP). It was found that explosive pressing with a pressure of 0.25-0.6 GPa provides high heat resistance of UHMWPE and the investigated composite (154-156 ° C). The heat resistance of the composite decreases to 143-145 ° C, but it is higher than that of a similar material after static pressing (128 ° C).

311 Microstructure and electrical conductivity for TiB_2 particle dispersed aluminum composites by spark sintering

2013 ◽  
Vol 2013.51 (0) ◽  
pp. _311-1_-_311-2_
Author(s):  
Gen SASAKI ◽  
Moon Hee LEE ◽  
Kenjiro SUGIO ◽  
Yong Bum CHOI ◽  
Kazuhiro MATSUGI
Keyword(s):  
Electrical Conductivity ◽  
Aluminum Composites ◽  
Dispersed Aluminum
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