Nacre-bionic nanocomposite membrane for efficient in-plane dissipation heat harvest under high temperature

Wang, Jieming; Liú, Dan; Li, Quanxiang; Chen, Cheng; Chen, Zhiqiang; Naebe, Minoo; Song, Pingan; Portehault, David; Garvey, Christopher J.; Golberg, Dmitri; Lei, Weiwei

doi:10.1016/j.jmat.2020.08.006

Cited by 22 publications

(12 citation statements)

References 38 publications

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“…[8] Due to their excellent heat resistant, mechanical, and photoelectric properties, PI nanocomposites have attracted significant attention in aerospace, nuclear energy, and electronics. [9][10][11][12] Tungsten oxide (WO 3 ), an n-type semiconductor with a wide band gap, is prevalently utilized in electrochromic materials. [13] WO 3 nanoparticles (NPs) exhibit high specific surface areas, small size effects, and homogeneous sizes.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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In this study, WO 3 nanorods are directly blended with polyamic acid (PAA) solutions to improve the electrochromic capacity of WO 3 /PAA composite films. Specifically, the hexagonal WO 3 nanorods are prepared as inorganic reinforcements using a hydrothermal method and modified by 𝜸-aminopropyl triethoxysilane. After curing at 300 °C, the WO 3 nanorods/polyimide (PI) composite films demonstrate excellent mechanical and thermal properties. The tensile strength of the 1 wt% WO 3 /PI composite film is ≈110.27 MPa. The thermal stability of the 5 wt% WO 3 /PI composite film is better than that of the others, and the T 5 (5% thermal weight loss temperature) value is ≈560.05 °C. Moreover, the WO 3 /PAA composite films demonstrate electrochromic behaviors. The electrochromic range of the 5 wt% WO 3 /PAA composite film exceeds to 68%. For the WO 3 /PAA samples, the oxidation peak of the WO 3 nanorods is evident in the cyclic voltammetry curves. The color contrast of WO 3 /PI nanocomposites can be enhanced owing to the significant synergistic effects of the electron donor-acceptor system.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Niu

Shi

Pei

et al. 2022

Macro Materials & Eng

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“…Many applications can benefit from the excellent anisotropic thermal properties of epoxy composite. [ 59 , 60 , 61 ] As shown in Figure 4e , the anisotropic TC ratio (TC || /TC ⊥ ‐2) in the bioSiC/EP composites is 5.77, which is much higher than that of natural wood (1.50), even higher than that of wood aerogel (4.30) with layered structure after chemical treatment. Benefiting from this anisotropic architecture, the anisotropic factor of bioSiC/EP composites is over 5 times higher than other SiC/EP composites.…”

Section: Resultsmentioning

confidence: 98%

“…Flame retardancy is an important factor to ensure its fire safety during use for thermal management materials. [ 59 , 60 , 90 ] Therefore, the flame resistance properties of pure EP, random SiC/EP, and bioSiC/EP composites were characterized by a butane spray gun ( Figure 9 ). As shown in Figure 9a , the pure EP was combustible and broke into black blocks at 30 s when it was close to the flame (Figure 9b ).…”

Section: Resultsmentioning

confidence: 99%

Wood‐Derived, Vertically Aligned, and Densely Interconnected 3D SiC Frameworks for Anisotropically Highly Thermoconductive Polymer Composites

Zhou

Wang

et al. 2022

Advanced Science

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Construction of a vertically aligned and densely interconnected ordered 3Dfiller framework in a polymer matrix is a challenge to attain significant thermal conductivity (TC) enhancement efficiency. Fortunately, many biomaterials with unique microstructures can be found in nature. With inspiration from wood, artificial composites can be rationally designed to achieve desired properties. Herein, the authors report a facile and effective approach to fabricate anisotropic polymer composites by biotemplate ceramization technology and subsequent vacuum impregnation of epoxy resin. The hierarchical microstructure of wood is perfectly replicated in the cellular biomass derived SiC (bioSiC) framework by carbothermal reduction. Owing to the anisotropic architecture of bioSiC, the epoxy composite with vertically aligned dense SiC microchannels shows interesting properties, including a high TC (10.27 W m −1 K −1 ), a significant enhancement efficiency (259 per 1 vol% loading), an outstanding anisotropic TC ratio (5.77), an extremely low coefficient of linear thermal expansion (12.23 ppm K −1 ), a high flexural strength (222 MPa), and an excellent flame resistance. These results demonstrate that this approach is expected to open a new avenue for design and preparation of high performance thermal management materials to address the heat dissipation of modern electronics.

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“…Furthermore, with rising temperatures, both the in‐plane and out‐of‐plane λ values increase owing to the effect of Umklapp phonon scattering and reduced Kapitsa resistance. [ 20 ] Despite this, the deviation of λ values from 25 to 200 °C is less than 10%, demonstrating a slight temperature dependence of λ values of the nanocomposite films.…”

Section: Resultsmentioning

confidence: 98%

“…This approach can maximize the in‐plane thermal conductivity and minimize the horizontal thermal resistance, while preserving a low out‐of‐plane thermal conductivity. [ 20–22 ] The resultant highly anisotropic layered materials act as heat spreaders to dissipate the accumulated heat in the in‐plane direction, and as heat shields to protect electronic devices from overheating. [ 23,24 ] Up to now, many methods have been used to design highly anisotropic polymeric thermal management materials, including hot‐pressing and electrostatic spraying.…”

Section: Introductionmentioning

confidence: 99%

Scalable, Robust, Low‐Cost, and Highly Thermally Conductive Anisotropic Nanocomposite Films for Safe and Efficient Thermal Management

Chen

Wang

et al. 2021

Adv Funct Materials

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106

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Recently, soaring developments in microelectronics raise an urgent demand for thermal management materials to tackle their “overheating” concerns. Polymer nanocomposites are promising candidates but often suffer from their inability of mass production, high‐cost, poor mechanical robustness, and even flammability. Hence, it is desirable to scalably fabricate low‐cost, robust polymeric nanocomposites that are highly thermally conductive and fire‐retardant to ensure safe and efficient thermal management. Herein, the scalable production of nacre‐like anisotropic nanocomposite films using the layer‐by‐layer assembly of phenylphosphonic acid@graphene nanoplatelets (PPA@GNPs)‐poly(vinyl alcohol) (PVA) layer and GNPs layers, is demonstrated. The PPA serves as interfacial modifiers and fire retardants for flammable PVA (film‐forming agent) and GNPs (inexpensive conductive nanofillers) via hydrogen‐bonding and π–π stacking. The resultant nanocomposite exhibits a high flexibility, high tensile strength of 259 MPa, and an ultrahigh in‐plane thermal conductivity of 82.4 W m‐1 K‐1, making it effectively cool smartphone and high‐power light emitting diode modules, outperforming commercial tinfoil counterparts. Moreover, the as‐designed nanocomposites are intrinsically fire‐retardant and can shield electromagnetic interference. This work offers a general strategy for mass production of thermally conductive nanocomposites holding great promise as thermal management materials in electronic, military, and aerospace fields.

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Nacre-bionic nanocomposite membrane for efficient in-plane dissipation heat harvest under high temperature

Cited by 22 publications

References 38 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Wood‐Derived, Vertically Aligned, and Densely Interconnected 3D SiC Frameworks for Anisotropically Highly Thermoconductive Polymer Composites

Scalable, Robust, Low‐Cost, and Highly Thermally Conductive Anisotropic Nanocomposite Films for Safe and Efficient Thermal Management

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Nacre-bionic nanocomposite membrane for efficient in-plane dissipation heat harvest under high temperature

Cited by 22 publications

References 38 publications

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO3 Nanorods

Wood‐Derived, Vertically Aligned, and Densely Interconnected 3D SiC Frameworks for Anisotropically Highly Thermoconductive Polymer Composites

Scalable, Robust, Low‐Cost, and Highly Thermally Conductive Anisotropic Nanocomposite Films for Safe and Efficient Thermal Management

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Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods

Synergistic Effects of Mechanical, Thermal, and Optical Properties of Polyimide Composite Films Reinforced with WO₃ Nanorods