Kubelka-Munk revised theory for high solar reflectance and high long-wave emissivity coatings designing

He, Yan; Xiong, Zhang; Zhang, Yongjuan

doi:10.1007/s11595-016-1337-4

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…Conversely, the plain black polymer showed higher inhomogeneities in the temperature at the base, with temperatures reaching 91.3 • C. This behavior finds its explanation in the influence of color on irradiation phenomena. Indeed, the composite materials PA-32BN and PA-32BN-MgO exhibited a white appearance, while the plain polymer was black, a color that absorbs heat more readily through irradiation, due to its higher absorptivity [76]. The choice of the black plain polymer enabled a comparison of thermal performances under more challenging conditions, allowing us to study how the larger quantity of absorbed heat was transferred by conduction within the pins of the plain polymer heat sinks, compared to those made of composites.…”

Section: Irradiative Heating Sourcementioning

confidence: 99%

Thermally Conductive and Electrically Insulating Polymer-Based Composites Heat Sinks Fabricated by Fusion Deposition Modeling

Bagatella,

Cereti,

Manarini

et al. 2024

Polymers

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This study explores the potential of novel boron nitride (BN) microplatelet composites with combined thermal conduction and electrical insulation properties. These composites are manufactured through Fusion Deposition Modeling (FDM), and their application for thermal management in electronic devices is demonstrated. The primary focus of this work is, therefore, the investigation of the thermoplastic composite properties to show the 3D printing of lightweight polymeric heat sinks with remarkable thermal performance. By comparing various microfillers, including BN and MgO particles, their effects on material properties and alignment within the polymer matrix during filament fabrication and FDM processing are analyzed. The characterization includes the evaluation of morphology, thermal conductivity, and mechanical and electrical properties. Particularly, a composite with 32 wt% of BN microplatelets shows an in-plane thermal conductivity of 1.97 W m−1 K−1, offering electrical insulation and excellent printability. To assess practical applications, lightweight pin fin heat sinks using these composites are designed and 3D printed. Their thermal performance is evaluated via thermography under different heating conditions. The findings are very promising for an efficient and cost-effective fabrication of thermal devices, which can be obtained through extrusion-based Additive Manufacturing (AM), such as FDM, and exploited as enhanced thermal management solutions in electronic devices.

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Section: Irradiative Heating Sourcementioning

confidence: 99%