Heat Conductivity of Polymeric Micro- And Nanocomposites Based on Polyethylene at Various Methods of Their Preparation

Fialko, Nataliia; Dinzhos, Roman; Sherenkovskiy, Yu. V.; Meranova, Nataliia; Navrodskaya, R. A.

doi:10.31472/ihe.4.2017.03

Cited by 3 publications

(8 citation statements)

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“…Various aspects of the study of the most important thermophysical properties of polymer micro-and nanocomposites -their heat conductivity and specific heat capacity are reported in many works [1][2][3][4][5][6][7][8][9][10][11][12]. As for the thermally conductive properties of composite materials, special attention is paid to their study.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing the influence of the type of micro- and nanofillers on the thermophysical properties of highly heat conductive polymer composites based on polyamide 6

Fialko

Dinzhos

Sherenkovskii

et al. 2022

EEJET

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The object of this study is the thermophysical properties of polymer micro- and nanocomposites, as well as the dependence of their heat conductivity with structural characteristics when using different types of fillers. A set of experimental studies of heat conductivity and specific heat capacity of polymer micro- and nanocomposite materials for polyamide 6 and carbon nanotubes, copper and aluminum as matrix and fillers was carried out. When obtaining composites, a method was used that is based on the mixing of components in the polymer melt. The content of fillers varied from 0.3 to 10 %, and the temperature of composite materials – from 305 to 500 K. Experimental dependences of heat conductivity coefficients of the studied composites on the content of the filler were derived. It was established that according to the value of these coefficients in order of their reduction, these composite materials are ranked as follows: composites with fillers with carbon nanotubes, copper, and aluminum. It was found that only one percolation threshold is observed, when using a polyamide 6 matrix. The regularities of changes in the specific heat capacity of the composites under consideration on their temperature when varying within the above limits of the filler content were investigated. The analysis of the influence of the content of fillers on the degree of crystallinity of the polymer matrix of the investigated composite materials was carried out. It is shown that with an increase in the content of fillers, the degree of crystallinity decreases. The relationship between the thermally conductive properties of the composites under consideration and the specified degree of crystallinity has been established. Higher values of heat conductivity of composites correspond to lower values of the degree of crystallinity. The reported results can be widely used in the development of highly heat conductive composites for various engineering applications.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing the influence of the type of micro- and nanofillers on the thermophysical properties of highly heat conductive polymer composites based on polyamide 6

Fialko

Dinzhos

Sherenkovskii

et al. 2022

EEJET

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“…The above studies [6][7][8][9][10] consider the thermal conductive properties of composites manufactured by using known methods. When applying new methods, the task arises at the stage of their scientific and technical justification to establish the dependence of these properties on the regime parameters of devices for implementing those methods.…”

Section: It Is Shown That Increasing the Overheating Of A Polymer Melt Causes An Increase In The Thermal Conductivity Of The Composites Hmentioning

confidence: 99%

“…However, there are almost no studies in the above papers [1][2][3][4][5] on the effects exerted by the manufacturing methods of polymeric composites on their thermal-physical performance. The results from studying these characteristics in the context of their dependence on manufacturing methods are reported in several works [6][7][8][9][10]. Paper [6] describes a comparative analysis of the thermal conductive properties of polymeric micro and nanocomposites based on polyethylene, obtained using methods that involve the mixing of components in a dry form or melt of the polymer matrix.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The results from studying these characteristics in the context of their dependence on manufacturing methods are reported in several works [6][7][8][9][10]. Paper [6] describes a comparative analysis of the thermal conductive properties of polymeric micro and nanocomposites based on polyethylene, obtained using methods that involve the mixing of components in a dry form or melt of the polymer matrix. The concentration dependences of thermal conductivity coefficients for polyethylene filled with CNTs or aluminum microparticles are given.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Establishing patterns in the effect of temperature regime when manufacturing nanocomposites on their heat-conducting properties

Fialko

Dinzhos

Sherenkovskii

et al. 2021

EEJET

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This paper reports the experimental study carried out to establish the dependence of the thermal conductivity of polypropylene-based nanocomposites filled with carbon nanotubes on the main parameter of the temperature regime of their manufacturing ‒ the level of overheating a polymer melt relative to its melting point. The study has been conducted for nanocomposites that were manufactured by applying a method based on the mixing of components in the polymer melt applying a special disk extruder. During the composite manufacturing process, the level of melt overheating varied from 10 to 75 K, with the mass share of filler ranging from 0.3 to 10.0 %. It is shown that increasing the overheating of a polymer melt causes an increase in the thermal conductivity of the composites. However, when the overheating has reached a certain value, its further growth does not increase the thermal conductivity of nanocomposites. Based on the established pattern, the rational level of this overheating has been determined. That resolves the tasks of manufacturing highly heat-conducting nanocomposites and implementing appropriate energy-saving technology. Data have been acquired on the effects of the impact of the amount of polymer melt overheating on the values of the first and second percolation thresholds for the examined nanocomposites. It is established that the value of the first percolation threshold is more sensitive to the specified amount of overheating. The dependences of the density of the examined composites on the level of polymer melt overheating have been derived. The correlation between a given dependence and the nature of a corresponding change in the thermal conductivity of the composites has been established. Applying the proposed highly heat-conducting nanocomposites is promising for micro and nanoelectronics, energy, etc.

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“…Анализ состояния исследований, касающихся физических свойств полимерных микро-и нанокомпозиционных материалов, свидетельствует о том, что эти свойства могут существенно зависеть от методов получения данных материалов [8][9][10][11]. Особый интерес представляет изучение закономерностей влияния методов получения полимерных микро-и нанокомпозитов на их теплопроводящие свойства.…”

Section: Introductionunclassified

Теплопроводность Полимерных Микро- И Нанокомпозитов На Основе Поликарбоната При Различных Методах Их Получения

Fialko¹,

Dinzhos²,

Meranova³

et al. 2018

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Для широкого диапазона изменения массовой доли наполнителя (от 0,2 до 10%) представлены результаты экспериментальных исследований коэффициентов теплопроводности полимерных микро- и нанокомпозитов на основе поликарбоната, наполненного УНТ или микрочастицами алюминия, при использовании для их получения методов, базирующихся на смешении компонентов в сухом виде и в расплаве полимера. Приводятся данные о влиянии рассматриваемых методов на величины перколяционных порогов. Рассматриваются результаты оценки себестоимости исследуемых композиционных материалов, полученных с применением сопоставляемых методов.

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Heat Conductivity of Polymeric Micro- And Nanocomposites Based on Polyethylene at Various Methods of Their Preparation

Cited by 3 publications

References 1 publication

Establishing the influence of the type of micro- and nanofillers on the thermophysical properties of highly heat conductive polymer composites based on polyamide 6

Establishing the influence of the type of micro- and nanofillers on the thermophysical properties of highly heat conductive polymer composites based on polyamide 6

Establishing patterns in the effect of temperature regime when manufacturing nanocomposites on their heat-conducting properties

Теплопроводность Полимерных Микро- И Нанокомпозитов На Основе Поликарбоната При Различных Методах Их Получения

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