High-strength and multi-functional gypsum with unidirectionally porous architecture mimicking wood

Gao, Kefeng; Wang, Faheng; Zhang, Mingyang; Zhang, Jian; Jiao, Dan; Xu, Qianfan; Guan, Jianjun; Zhang, Xing; Liu, Zengqian; Zhang, Zhefeng

doi:10.1016/j.ceja.2021.100114

Cited by 5 publications

(2 citation statements)

References 48 publications

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“…Although freeze-casting has been widely applied to construct oriented thermal conductive pathways, conductive fillers were aligned in only one direction due to the lamellar ice template. − By contrast, the current work successfully developed a dendritic ice template, aligning conductive fillers in both through-plane and in-plane directions. It is noteworthy that BN is used here as a proof of concept.…”

Section: Resultsmentioning

confidence: 84%

Isotropically Ultrahigh Thermal Conductive Polymer Composites by Assembling Anisotropic Boron Nitride Nanosheets into a Biaxially Oriented Network

et al. 2022

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The demand for thermally conductive but electrically insulating materials has increased greatly in advanced electronic packaging. To this end, polymer-based composites filled with boron nitride (BN) nanosheets have been intensively studied as thermal interface material (TIM). However, it remains a great challenge to achieve isotropically ultrahigh thermal conductivity in BN/polymer composites due to the inherent thermal property anisotropy of BN nanosheets and/or the insufficient construction of the 3D thermal conductive network. Herein, we present a high-performance BN/polymer composite with a biaxially oriented thermal conductive network by a dendritic ice template. The composite exhibits both ultrahigh in-plane (∼39.0 W m–1 K–1) and through-plane thermal conductivity (∼11.5 W m–1 K–1) at 80 vol % BN loading, largely exceeding those of reported BN/polymer composites. In addition, our composite as a TIM shows higher cooling efficiency than that of commercial TIM with up to 15 °C reduction of the chip temperature and retains good thermal stability even after 1000 heating/cooling cycles. Our strategy represents an effective approach for developing advanced thermal interface materials, which are greatly demanded for advanced electronics and emerging areas like wearable electronics.

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Section: Resultsmentioning

confidence: 84%

Isotropically Ultrahigh Thermal Conductive Polymer Composites by Assembling Anisotropic Boron Nitride Nanosheets into a Biaxially Oriented Network

et al. 2022

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“…According to this figure, porosity increases with the increase in the amount of phosphogypsum. This evolution can be explained by the fact that phosphogypsum, which contains high levels of calcium sulfate, can serve as a pore-forming agent [48][49][50] during membrane fabrication. When uniformly dispersed throughout the ceramic membrane, calcium sulfate particles can decompose upon heating, leaving voids within the membrane structure.…”

Section: Effect Of Phosphogypsum On Membrane Porositymentioning

confidence: 99%

Studying the Effect of Phosphogypsum Addition on Ceramic Membrane Properties

Zrelli,

Metoui,

Doucouré

2023

ETJ

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This study aimed to investigate the effects of phosphogypsum addition on ceramic membrane properties. In this regard, clay and phosphogypsum were characterized using FTIR and laser particle sizer. The ceramic paste was prepared by incorporating varying amounts of phosphogypsum (10 to 50%), followed by molding using a semidry-pressing process at 10 bars pressure and sintering temperature at 900℃. The raw materials and prepared membranes were analyzed using FTIR, laser particle size, contact angle, porosity, and mechanical strength to evaluate the properties of the resulting ceramic membranes. The study showed that as the amount of phosphogypsum increased from 10% to 50%, the membrane's hydrophilicity significantly increased, while its mechanical strength decreased by 35% and porosity increased by 26%. Moreover, the permeability of distilled water also showed a significant increase of 67% when the amount of phosphogypsum was increased from 10% to 50%.These observations suggest that phosphogypsum can significantly influence ceramic membrane properties, which may have implications for its use in various membrane applications. The findings of this research contribute to our understanding of the potential use of phosphogypsum as a valuable material for ceramic membrane production, with important implications for sustainable waste management practices. Future studies can focus on exploring the suitability of these ceramics for various applications and their environmental impact.

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Continuous ice-templating of macro-porous materials with uniformly ordered architecture

et al. 2022

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High-strength and multi-functional gypsum with unidirectionally porous architecture mimicking wood

Cited by 5 publications

References 48 publications

Isotropically Ultrahigh Thermal Conductive Polymer Composites by Assembling Anisotropic Boron Nitride Nanosheets into a Biaxially Oriented Network

Isotropically Ultrahigh Thermal Conductive Polymer Composites by Assembling Anisotropic Boron Nitride Nanosheets into a Biaxially Oriented Network

Studying the Effect of Phosphogypsum Addition on Ceramic Membrane Properties

Continuous ice-templating of macro-porous materials with uniformly ordered architecture

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