Determination of the Thermal Conductivity of Metal-Polymers

Chepchurov, Mikhail S.; Lubimyi, N. S.; Voronenko, V. P.; Adeniyi, Daniel R.

doi:10.4028/www.scientific.net/msf.973.9

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…Compared with the loading temperature rise characteristic of the polymer–polymer homogeneous interface [ 18 ], the temperature rise in the PE/Ni heterointerface is relatively low, which may be caused by two reasons. On the one hand, the thermal conductivity of the metal contact interface is higher (about 300 times) than that of the polymer interface [ 24 , 25 , 26 ], and the interface heat will diffuse through the metal layer. On the other hand, because there is no entanglement of molecular chains at the heterointerface, the effect of adhesion is weak, so the influence on the movement of molecular chains is not obvious [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Changsheng

Qiang

et al. 2022

IJMS

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Understanding the properties of polymer–metal interfacial friction is critical for accurate prototype design and process control in polymer-based advanced manufacturing. The transient polymer–metal interfacial friction characteristics are investigated using united-atom molecular dynamics in this study, which is under the boundary conditions of single sliding friction (SSF) and reciprocating sliding friction (RSF). It reflects the polymer–metal interaction under the conditions of initial compaction and ultrasonic vibration, so that the heat generation mechanism of ultrasonic plasticization microinjection molding (UPMIM) is explored. The contact mechanics, polymer segment rearrangement, and frictional energy transfer features of polymer–metal interface friction are investigated. The results reveal that, in both SSF and RSF modes, the sliding rate has a considerable impact on the dynamic response of the interfacial friction force, where the amplitude has a response time of about 0.6 ns to the friction. The high frequency movement of the polymer segment caused by dynamic interfacial friction may result in the formation of a new coupled interface. Frictional energy transfer is mainly characterized by dihedral and kinetic energy transitions in polymer chains. Our findings also show that the ultrasonic amplitude has a greater impact on polymer–metal interfacial friction heating than the frequency, as much as it does under ultrasonic plasticizing circumstances on the homogeneous polymer–polymer interface. Even if there are differences in thermophysical properties at the heterointerface, transient heating will still cause heat accumulation at the interface with a temperature difference of around 35 K.

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Section: Resultsmentioning

confidence: 99%

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Changsheng

Qiang

et al. 2022

IJMS

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“…Based on the experience of using polymer composite materials for their use as a material for the formative parts of a mold [33], it can be concluded that for the need to reinforce hollow, thin-walled shell forms grown by SLM 3D metal printing, it is most rational to use the LEO Ferro-Hrom metal polymer [34], the characteristics of which are given in Table 3.…”

Section: Methodsmentioning

confidence: 99%

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Lubimyi,

Chepchurov,

Polshin

et al. 2024

JMMP

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This article describes the technology for manufacturing a metal composite structure of a metal-cutting tool body. The main problem with using metal 3D-printing is its prohibitively high cost. The initial data for carrying out finite element calculations are presented, in particular, the calculation and justification of the selected loads on the drill body arising from metal-cutting forces. The described methodology for designing a digital model of a metal-cutting tool for the purpose of its further production using SLM 3D metal printing methods facilitates the procurement of a digital model characterized by a reduced weight and volume of material. The described design technology involves the production of a thin-walled outer shell that forms the external technological surfaces necessary for the drill body, as well as internal structural elements formed as a result of topological optimization of the product shape. Much attention in this article is paid to the description of the technology for filling internal cavities with a viscous metal polymer, formed as a result of the topological optimization of the original model. Due to this design approach, it is possible to reduce the volume of 3D metal printing by 32%, which amounts to more than USD 135 in value terms.

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“…The physical properties of metal-polymer materials are analyzed on the basis of data from various world manufacturers. In addition, the study has taken into account the results of experimental studies obtained earlier in the development of technology for the manufacture of metal-metal-polymer molds [18][19][20].…”

Section: Methodsmentioning

confidence: 99%

“…These casting properties make it possible to use these materials in the development of new production technologies, partially or completely replacing metallic materials. For example, in studies [18][19][20], it is shown that the use of a metal polymer is optimally suited for the manufacture of shape-forming tooling for molding thermoplastics in small-scale production. The metal polymer is able to withstand the temperature and pressure of the plastic melt injected into the mold, providing the required shape and size of the product.…”

Section: Sourcementioning

confidence: 99%

Justification of the Use of Composite Metal-Metal-Polymer Parts for Functional Structures

et al. 2022

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The additive manufacturing of metal parts takes up an increasing number of areas of mechanical engineering, but it still remains too expensive for mass use. Based on the experience in the production of combined metal-metal-polymer forming parts of molds, a new method for the production of composite parts from a metal shell filled with metal-polymer is proposed. As a basis for the study, strength calculations are given by the finite element method for the details of the exoskeleton and a sample of simplified geometry. Comparison of the strength characteristics of parts made of various materials and their combinations showed high strength characteristics of a composite part made of a metal shell and a metal-polymer filler. The metal-metal polymer composite part is distinguished not only by its high strength but also by a significantly lower cost, due to the reduction in the volume of 3D printing with metal. The problems of obtaining composite structures are also discussed. The main problem is the development of a metal-polymer casting technology. The process of filling a thin-walled shell with a metal-polymer causes difficulty.

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Determination of the Thermal Conductivity of Metal-Polymers

Cited by 5 publications

References 7 publications

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Justification of the Use of Composite Metal-Metal-Polymer Parts for Functional Structures

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