Thermal conductivity of polypropylene composites filled with silane-modified hexagonal BN

Recently emerging trends in thermal conductivity of polymer nanocomposites

“…Relative to temperature dependence of thermal conductivity, a variation in behavior is observed between semicrystalline and amorphous polymers (Kamseu et al 2015). Semicrystalline polymers exhibit a temperature dependence in close proximity with that obtained from highly imperfect crystals at low temperature, revealing an optimum within temperature range of 100 K, tending towards lower temperatures and increasing thermal conductivities with increasing crystallinity (Kamseu et al 2015, Muratov et al 2015) unlike amorphous polymers which exhibit a temperature dependence close to that observed for inorganic glasses with no optimum, while showing a significant plateau region at lower temperatures. For amorphous polymers, thermal conductivity is enhanced with increasing temperature tending towards glass transition temperature (Tg) while exhibiting a reduction above Tg.…”

“…The thermal conductivity of semicrystalline polymers has been reported to improve with increasing crystallinity (Muratov et al 2015). Generally, thermal conductivities of polymers have been reported to depend on numerous factors, including chemical composition, bond-strength, type of structure, side group molecular weight, distribution of molecular density, strength and type of defects, structural faults, and intermediate range order size conditions of processing and temperature (Kamseu et al 2015, Muratov et al 2015. A remarkable level of complexity is observed while estimating the heat transportation of polymers vs. crystallinity because of the interfacial phonon scattering existing between the amorphous and crystalline phases and complex parameters of polymer crystallinity (Zhong and Lukes 2006).…”

“…Here, the thermal conductivity of PNCs was revealed to be strongly affected by polymer crystallinity, which approximately varies between 0.2 W/m K for amorphous polymers, such as polystyrene (PS) or polymethyl methacrylate (PMMA), to 0.5 W/m K for highly crystalline polymers such as high-density polyethylene (HDPE). The thermal conductivity of semicrystalline polymers has been reported to improve with increasing crystallinity (Muratov et al 2015). Generally, thermal conductivities of polymers have been reported to depend on numerous factors, including chemical composition, bond-strength, type of structure, side group molecular weight, distribution of molecular density, strength and type of defects, structural faults, and intermediate range order size conditions of processing and temperature (Kamseu et al 2015, Muratov et al 2015.…”

“…Therefore, there are numerous reasons to improve heat dissipation ability of polymer materials for various industrial applications such as circuit-boards in power-electronics, heatexchangers, and others already mentioned. Hence, it is important to research into various techniques, models, and routes to enhance thermal conductivity of polymers so as to widen their scope of industrial application and solve challenges of heat accumulation and subsequent thermal failures of devices (Muratov et al 2015, Kamseu et al 2015.…”

Preparation of Basalt Incorporated Polyethylene Composite with Enhanced Mechanical Properties for Various Applications

“…In these reason various types of mineral fillers have become widespread: kaolin, talc, mica, chalk, silica, aerosil, titanium oxide, aluminum oxide, etc. [3][4][5]. Thus, most effective approach, to improve characteristics composite materials are incorporated in the use of inexpensive and efficient fillers, which include basalt and its derivatives thereof.…”