High Out-of-Plane Thermally Conductive Polyimide Film for Electronic Thermal Management by the Incorporation of Core-Shell Ag/Polyimide Microparticles

Article Nanoscience & Nanotechnology

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

Yongqiang Guo et al.

Summary: A hierarchically multifunctional polyimide composite film with high thermal conductivity and electromagnetic interference (EMI) shielding has been successfully fabricated through hierarchical design and assembly strategy.

NANO-MICRO LETTERS (2022)

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Article Nanoscience & Nanotechnology

High-Performance and Rapid-Response Electrical Heaters Derived from Cellulose Nanofiber/Silver Nanowire Nanopapers for Portable Thermal Management

Rui Cheng et al.

Summary: High-performance electrical heaters with outstanding flexibility, superior portability, and mechanical properties have been developed via a sequential assembly followed by a hot-pressing strategy. The resultant electrical heaters exhibit great flexibility, excellent mechanical strength, low sheet resistance, and superior electrical stabilities. They also show remarkable heating temperature, ultrafast electro-thermal response, and groundbreaking long-term stability and repeatability, surpassing previously reported heaters. The large-area production feasibilities of these heaters are also demonstrated, making them promising for various applications.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

Polydopamine Nanoparticle-Reinforced Near-Infrared Light-Triggered Shape Memory Polycaprolactone-Polydopamine Polyurethane for Biomedical Implant Applications

Suyang Dai et al.

Summary: This study developed a new type of near-infrared light-triggered shape memory polyurethane using polydopamine nanoparticles. The polyurethane showed excellent mechanical properties and rapid shape recovery under near-infrared light due to the dispersion of polydopamine nanoparticles and the photothermal effect. In vitro and in vivo tests demonstrated the biocompatibility and shape memory performance of the polyurethane under low-intensity near-infrared light. This material has potential for biomedical implant applications.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Engineering, Environmental

Flexible and quasi-isotropically thermoconductive polyimide films by guided assembly of boron nitride nanoplate/boron nitride flakes for microelectronic application

Lulu An et al.

Summary: The research team successfully improved the thermal conductivity, thermal stability, electrical conductivity, dielectric properties, and shape memory performance of polyimide by rational assembly of dopamine-modified hexagonal boron nitride flakes and nanoparticles. This special structure also gave the film high thermal stability, electrical resistance, and low dielectric loss, along with excellent flexibility and shape memory performance, making it a promising material for diverse electronic device applications.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Manufacturing

A facile method to prepare layered solid fillers-based polymer composites with isotropic thermal conductivity

Kimiyasu Sato et al.

Summary: Layered solid particles like h-BN and graphite have been utilized as anisotropic thermo-conductive fillers in polymer composites, but there is a desire for methods to prepare polymer composites with isotropic thermal conductivity. This study successfully prepared epoxy composites with isotropic thermal conductivity using these fillers, achieving solid loadings exceeding 60 vol% and thermal conductivity values of approximately 8 Wm(-1)K(-1) for h-BN/epoxy and 28-29 Wm(-1)K(-1) for graphite/epoxy composites. The internal solid fillers configuration achieved through integration of spherical particles was studied using X-ray diffraction analysis.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2022)

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Article Materials Science, Composites

Improving in-plane and out-of-plane thermal conductivity of polyimide/boron nitride film with reduced graphene oxide by a moving magnetic field induction

Dongxu Liu et al.

Summary: In this study, high-performance thermal management materials were developed using a novel approach. Hybrid nanoparticles of reduced graphene oxide and magnetic needle-like ferro oxide were successfully prepared by in-situ modification of polydopamine. A moving magnetic field induction strategy was employed to align the nanoparticles in the composite film, resulting in improved thermal conductivity. The synergistic effect of the nanoparticles and boron nitride in the composite film led to a significant enhancement in thermal conductivity.

COMPOSITES SCIENCE AND TECHNOLOGY (2022)

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Article Polymer Science

Impregnation assisted graphene oxide/polyimide nanofiber composites with improved thermal conductivity and breakdown strength

Wei Deng et al.

Summary: This study demonstrates the efficient strategy of combining electrospinning and impregnation to improve the comprehensive properties of polymer composites for thermal management applications. The modified graphene oxide/polyimide composite films achieved significant enhancement in thermal conductivity, breakdown strength, mechanical properties, and dielectric properties.

JOURNAL OF POLYMER RESEARCH (2022)

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Article Polymer Science

Ordered Alignment of Liquid Crystalline Graphene Fluoride for Significantly Enhancing Thermal Conductivities of Liquid Crystalline Polyimide Composite Films

Kunpeng Ruan et al.

Summary: In this study, liquid crystalline modification was performed on graphene fluoride (LC-GeF) to achieve ordered alignment, and a thermally conductive liquid crystalline polyimide (LC-PI) matrix was utilized to fabricate thermally conductive LC-GeF/LC-PI composite films. These films exhibited significantly improved thermal conductivity, insulation, mechanical, and thermal properties compared to normal PI films and LC-PI films.

MACROMOLECULES (2022)

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Article Materials Science, Multidisciplinary

Pea-Pod-like Carbon Microspheres Encapsulated by Graphene-like Carbon Nitride for Enhanced Thermal Conductivity in Polyimide Films

Shuaishuai Liu et al.

Summary: This study successfully increased the thermal conductivity of polyimide film in both horizontal and vertical directions by preparing an electrically insulating pea-pod-like filler, showcasing rapid heating capability and maintaining electrical insulation, thermal stability, and dimensional stability.

ACS APPLIED POLYMER MATERIALS (2022)

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Article Nanoscience & Nanotechnology

Vertical Graphene Nanosheet/Polyimide Composite Films for Electromagnetic Interference Shielding

Zhenwei Li et al.

Summary: The study presents a composite film composed of vertical graphene nanosheets and polyimide for high-performance electromagnetic interference (EMI) shielding. The optimal composite film exhibits superior EMI shielding effectiveness and thermal management performance, while maintaining suitable flexibility and robustness, establishing potentials for EMI shielding and thermal management applications.

ACS APPLIED NANO MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Silver Nanoparticle-Enhanced Three-Dimensional Boron Nitride/Reduced Graphene Oxide Skeletons for Improving Thermal Conductivity of Polymer Composites

Chao Liu et al.

Summary: The study fabricated a high thermally conductive polymer composite by assembling three-dimensional structures composed of boron nitride and reduced graphene oxide with silver nanoparticle enhancement. Analysis showed that the composite exhibits excellent thermal conductivity and resistance properties at low filler loading.

ACS APPLIED POLYMER MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Constructing dual thermal conductive networks in electrospun polyimide membranes with highly thermally conductivity but electrical insulation properties

Xiaodong Zhang et al.

Summary: An interpenetrating CNT @alpha PVA network was successfully constructed in PI/BNNS membranes, significantly enhancing the thermal conductivity. The composites also exhibit excellent electrical insulating properties and flexibility.

ADVANCED COMPOSITES AND HYBRID MATERIALS (2021)

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Article Materials Science, Composites

Ice-templated assembly strategy to construct three-dimensional thermally conductive networks of BN nanosheets and silver nanowires in polymer composites

Haitong Li et al.

Summary: Polymer composites are widely used in electronic packaging materials due to their low cost, flexibility, chemical stability, and high malleability. This study introduces a novel ice-templated assembly strategy to construct thermally conductive networks in epoxy resin composites, significantly improving the through-plane thermal conductivity while maintaining other important properties. The resulting polymer composite shows great potential for use in advanced packaging materials such as substrate materials and printed circuit board materials.

COMPOSITES COMMUNICATIONS (2021)

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Article Materials Science, Composites

Enhanced thermal conductivity of carbon nitride-doped graphene/polyimide composite film via a deciduous-like strategy

Yanyan Wang et al.

Summary: By doping reduced graphene oxide with carbon nitride into polyimide film, a high thermal conductivity and excellent electrical insulation at low filler loading were achieved.

COMPOSITES SCIENCE AND TECHNOLOGY (2021)

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Article Multidisciplinary Sciences

Significant Reduction of Interfacial Thermal Resistance and Phonon Scattering in Graphene/Polyimide Thermally Conductive Composite Films for Thermal Management

Kunpeng Ruan et al.

Summary: This study characterized and analyzed the aminated graphene oxide/polyimide thermally conductive composite films, demonstrating that amination can optimize interfaces, reduce phonon scattering, and interfacial thermal resistance, ultimately enhancing thermal conductivity. The composite films showed significant heat dissipation performance and efficient thermal management capabilities after processing.

RESEARCH (2021)

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Article Materials Science, Composites

Enhancement of thermal conductivity and dimensional stability of polyimide/boron nitride films through mechanochemistry

Xianghui Ou et al.

Summary: The study presents a mechanochemical approach to prepare high thermal conductivity polyimide/boron nitride films induced by ball-milling, which is simple and efficient. The method allows for simultaneous peeling of BN platelets and surface covalent modification in one step, resulting in the formation of a heat-transfer network in the composite.

COMPOSITES COMMUNICATIONS (2021)

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Article Polymer Science

Synergistic effect of phase structures and in situ sintering of silver fillers on thermal conductivity of epoxy/polyethersulphone/silver filler composites

Hajime Kishi et al.

Summary: The study investigated the thermal conductivity of DGEBA/DDM/PES/Ag filler composites. The co-continuous phase structures formed during curing, with Ag fillers sintering in epoxy-rich phases and experiencing enhanced contact opportunities. The enhanced thermal conductivities were attributed to the synergistic effect of phase structures and in situ sintering of Ag fillers.

POLYMER (2021)

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Article Materials Science, Composites

A simple strategy to prepare functional PI microspheres by constructing coating on PAA microspheres followed thermal imidization reaction

Qian Zhang et al.

Summary: This study proposed a three-step strategy for functionalizing PI microspheres through PAA microsphere preparation, functional material cladding, and thermal imidization, providing a facile and efficient method for the fabrication of functionalized PI composites.

COMPOSITES COMMUNICATIONS (2021)

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Article Materials Science, Composites

Enhanced the thermal conductivity of hydroxyl-terminated polybutadiene (HTPB) composites by graphene-silver hybrid

Zhengzhong Zhang et al.

Summary: The addition of Graphene-Silver (GNs-Ag) hybrids as fillers significantly increased the thermal conductivity of HTPB, improving the mechanical properties and thermal stability of the composites.

COMPOSITES COMMUNICATIONS (2021)

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Article Chemistry, Physical

Thermally conductive, self-healing, and elastic Polyimide@Vertically aligned carbon nanotubes composite as smart thermal interface material

Huitao Yu et al.

Summary: A self-healing and elastic polyimide copolymer filled into carbon nanotubes gaps exhibit high thermal conductivity, low interfacial thermal resistance, and strong surface adhesion. It also shows high elastic compressive deformation and self-healing capability, making it ideal for smart thermal management in high-power/intelligent devices.

CARBON (2021)

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Article Materials Science, Composites

Achieving ultrahigh thermal conductivity in Ag/MXene/epoxy nanocomposites via filler-filler interface engineering

Dezhao Wang et al.

Summary: Polymer composites with super-high thermal conductivity can be achieved by combining microsilver and nanosilver fillers with MXene, resulting in a significant improvement in thermal conductivity. The bridging effect between silver particles and MXene flakes plays a key role in enhancing the thermal conductivity of the composites.

COMPOSITES SCIENCE AND TECHNOLOGY (2021)

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Article Materials Science, Composites

Silver-coated thermoplastic polyurethane hybrid granules for dual-functional elastomer composites with exceptional thermal conductive and electromagnetic interference shielding performances

Chao Liu et al.

Summary: The research synthesized a novel filler@polymer hybrid (Ag@TPU) with excellent thermal conductivity and EMI shielding effectiveness for manufacturing dual-functional elastomer composites.

COMPOSITES COMMUNICATIONS (2021)

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Article Materials Science, Multidisciplinary