Wetting and reaction of molten La with poly- and mono-crystalline MgO at 1323 K

Yang, Longlong; Shen, Ping; Cong, Xiaoshuang; Jiang, Qi‐Chuan

doi:10.1007/s10853-012-6821-4

Cited by 10 publications

(6 citation statements)

References 28 publications

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“…In addition, for fiber‐reinforced composite materials, thermal conductivity is a key factor affecting their application range, and improving thermal conductivity is a critical issue. [ 45 ] Insufficient heat dissipation can lead to a deterioration in the mechanical properties of material, as an excess of heat can cause softening of the molecular chain. Studies have found that, within the same material, the orientation of fibers significantly affects thermal conductivity.…”

Section: Resultsmentioning

confidence: 99%

Aligned Bamboo Fiber‐Induced Crystallinity Mitigation of Lightweight Polymer Composite Enables Ultrahigh Strength and Unprecedented Toughness

Hou,

Wu,

et al. 2024

Adv Funct Materials

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Lightweight polymer composites promise incredible applications in aerospace, seaprobes, and medical apparatus. However, their performance is generally limited by a trade‐off between mechanical strength and toughness. Herein, a crystallinity mitigating strategy driven by highly aligned bamboo macrofibers embedded in a polycaprolactone polyol (PCL) matrix for producing ultrastrong and tough lightweight polymer composites is proposed. The embedded bamboo macrofibers have oxygen‐containing functional groups on the fiber surface, that can interact with functional groups (ester and hydroxyl groups) in the molecular chains of the PCL in the form of hydrogen bonds, thus preventing the aggregation of molecular chains and the crystallization of PCL, which ultimately leads to unprecedented toughness. Meanwhile, the bamboo macrofibres with intrinsically aligned microstructure, can enable effective stress transfer and dissipation, providing remarkable ultrahigh strength. As a result, the obtained lightweight polymer composite achieves ultrahigh mechanical strength (31.5 MPa) and superior toughness (21.7 MJ m−3) at an unprecedented low density (1.07 g cm−3), representing the state‐of‐the‐art in reported lightweight polymers. Such lightweight polymer composite has the potential to greatly expedite the practical realization of artificial medical materials, including orthopedic instruments and joint prostheses.

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Section: Resultsmentioning

confidence: 99%

Aligned Bamboo Fiber‐Induced Crystallinity Mitigation of Lightweight Polymer Composite Enables Ultrahigh Strength and Unprecedented Toughness

Hou,

Wu,

et al. 2024

Adv Funct Materials

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“…In the process of studying thermal conduction, the thermal conduction theory generally accepted by scholars is divided into thermal conduction path theory and thermal conduction permeability theory 13,23 …”

Section: Thermal Conduction Mechanism Of Polymer Compositesmentioning

confidence: 99%

“…Many scholars have only studied a certain aspect of thermal conductivity composites in detail. For example, Wu et al 11 reviewed the research progress and application of h‐BNNS as a thermal conductivity filler; Roudný et al 12 mainly introduced the application of 3D printing technology in fused deposition modeling (FDM) printing; Yang et al 13 reviewed various formwork methods. Research progress of thermally conductive polymer composites including self‐template, sacrificial template, foam template, ice template, and template‐directed chemical vapor deposition technology; He et al 14 summarized the three‐dimensional network thermal conduction path of thermally conductive materials.…”

Section: Introductionmentioning

confidence: 99%

A review: From the whole process of making thermal conductive polymer, the effective method of improving thermal conductivity

Wu,

Zhang,

Yan

et al. 2024

Journal of Polymer Science

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With the development of high power‐density electronic devices on smaller scales and emerging new energy vehicles, high thermal conductive materials have attracted more attention for better thermal management to adapt to various applications. By combining both the advantages of polymer materials and thermally conductive fillers, thermal conductive polymer composite materials are widely used in packaging and the protection of electronic devices for their mechanical robustness, high thermal conductivity, excellent insulation properties, heat resistance, and chemical resistance. In this review, first, the basic theory of heat conduction of polymer composites is discussed. Second, according to the classification of the composition of the thermal conductive polymer, the filled thermal conductive material is emphatically introduced. In this paper, the construction process of a thermal conductive network of polymer and composites is discussed from the perspective of processing. The simple construction of a thermal conductive network includes core‐shell structure, external force orientation, electrostatic spinning, electrostatic spraying, induced orientation, and vacuum‐assisted filtration. The three‐dimensional thermal conductivity network can be constructed using self‐assembly and template methods. From the above processing methods, this paper analyzes how to effectively improve thermal conductivity and achieve the goal of high thermal conductivity and excellent mechanical properties under low filling. After that, the contribution of filler and polymer modification to thermal conductivity is explained in detail. Finally, the future research direction of functionalization is prospected.

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“…Therefore, fillers with high TC are often added to polymer materials to improve their TC. Ceramic materials, such as hexagonal boron nitride, aluminum nitride, silicon carbide, and carbon materials, such as carbon nanotubes (CNTs), graphene‐related materials, and carbon nanofibers (CNF), are often used as high‐thermal‐conductivity fillers 4–7 . However, the addition of fillers generally reduces the flexibility of the composite material; therefore, it is desirable to achieve a high TC with low filler content.…”

Section: Introductionmentioning

confidence: 99%

Temperature dependency of electric field treatment for improvement of effective thermal conductivity of functional carbon/silicone rubber composite sheets

Haruki,

Tanaka

2024

J of Applied Polymer Sci

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Relationship between the temperature of the electric field treatment (EFT) and the improvement of the effective thermal conductivity (TC) in the out‐of‐plane direction of the carbon nanofiber (CNF)/cured silicone rubber composite sheet was investigated to elucidate the appropriate operation of the EFT. Two types of silicone rubber precursors, with viscosities of 1.3 and 58 Pa∙s, were used. The effective TC gradually increased as the temperature during EFT increased from 40 to 80 °C. However, beyond 80 °C, the effective TC started to decrease and reached the same value as that of the sheet without EFT at 100 °C. This trend was observed regardless of the rubber species or CNF content. The influence of the EFT temperature was also discussed regarding the temperature dependency of the viscoelastic properties: storage modulus, loss modulus, and complex viscosity of the uncured precursor solution. When the temperatures were set at 80 °C, no significant changes were observed in the three‐viscoelastic properties for 60 min. On the other hand, a significant increase in the viscoelastic properties was observed after 10 min at 100 °C because of the start of the curing reaction, which supported the relationship between the temperature of the EFT and effective TC.

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Wetting and reaction of molten La with poly- and mono-crystalline MgO at 1323 K

Cited by 10 publications

References 28 publications

Aligned Bamboo Fiber‐Induced Crystallinity Mitigation of Lightweight Polymer Composite Enables Ultrahigh Strength and Unprecedented Toughness

Aligned Bamboo Fiber‐Induced Crystallinity Mitigation of Lightweight Polymer Composite Enables Ultrahigh Strength and Unprecedented Toughness

A review: From the whole process of making thermal conductive polymer, the effective method of improving thermal conductivity

Temperature dependency of electric field treatment for improvement of effective thermal conductivity of functional carbon/silicone rubber composite sheets

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