Amine-terminated chain-grafted nanodiamond/epoxy nanocomposites as interfacial materials: Thermal conductivity and fracture resistance

Kim, Seong-Hwang; Rhee, Kyong Yop; Park, Soo‐Jin

doi:10.1016/j.compositesb.2020.107983

Cited by 54 publications

(25 citation statements)

References 57 publications

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“…Functionalization is often necessary to obtain good performances [ 43 , 44 ]. Nanodiamonds (NDs, with particle size in the range 4–10 nm) functionalized with ozone/tetra-ethylene pentamine has been successfully employed as a reinforcing agent (at an NDs optimal content of 0.50 wt.%) to produce epoxy nanocomposites with improved fracture resistance and thermal conductivity [ 45 ].…”

Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

“…Among the others, surface functionalization treatment employing ozone can be performed under an air atmosphere to provide oxygen radicals on the surface of nanofillers; this can be achieved at reasonable costs and by employing simple equipment [ 23 ]. As an example, the functionalization of nanodiamonds through a coupled treatment with ozone and tetra-ethylene pentamine (TEPA) was found to be effective to improve the interfacial interactions with epoxy matrix, enabling achievement of enhanced mechanical and thermal properties [ 45 ]. This approach was, in fact, able to avoid any aggregation process of the NDs, thereby exploiting the best interface synergism developed between the nanofiller and the epoxy matrix.…”

Section: Production Of Nanocompositesmentioning

confidence: 99%

“…In some cases, the chemical compounds employed to functionalize the surface of the nanofiller can additionally act as curing and/or toughening agents for the epoxy matrix, thus modifying the kinetics as well as further improving some characteristics of the nanocomposite, in particular the energy absorption, which is a highly desirable feature in some applications, for instance, in the field of adhesives [ 45 ].…”

Section: Production Of Nanocompositesmentioning

confidence: 99%

“…The incorporation of nanoparticles in epoxy resins allows modification of many properties. In comparison to the neat polymer, enhanced mechanical properties [ 6 , 16 , 27 , 32 , 35 , 45 , 57 , 69 , 85 , 101 , 106 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 ], improved corrosion resistance [ 21 , 25 , 59 , 64 , 70 , 92 , 108 , 120 , 121 , 122 , 123 , 124 , 125 , 126 ], increased thermal and electrical conductivity [ 5 , 15 , 16 , 17 , 27 , 45 , 86 , 87 , 101 , 109 , 110 , 117 , 127 , 128 ], high dielectric permittivity and low dielectric loss [ 93 ...…”

Section: Properties Of the Epoxy Nanocompositesmentioning

confidence: 99%

“…A large amount of energy, therefore, is required to allow the crack to pass the uniformly dispersed nanofillers and to propagate until the fracture failure [ 45 , 101 , 113 ]. This mechanism leads to significant increases in the mechanical properties of the material.…”

Section: Properties Of the Epoxy Nanocompositesmentioning

confidence: 99%

See 4 more Smart Citations

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

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This paper aims at reviewing the works published in the last five years (2016–2020) on polymer nanocomposites based on epoxy resins. The different nanofillers successfully added to epoxies to enhance some of their characteristics, in relation to the nature and the feature of each nanofiller, are illustrated. The organic–inorganic hybrid nanostructured epoxies are also introduced and their strong potential in many applications has been highlighted. The different methods and routes employed for the production of nanofilled/nanostructured epoxies are described. A discussion of the main properties and final performance, which comprise durability, of epoxy nanocomposites, depending on chemical nature, shape, and size of nanoparticles and on their distribution, is presented. It is also shown why an efficient uniform dispersion of the nanofillers in the epoxy matrix, along with strong interfacial interactions with the polymeric network, will guarantee the success of the application for which the nanocomposite is proposed. The mechanisms yielding to the improved properties in comparison to the neat polymer are illustrated. The most important applications in which these new materials can better exploit their uniqueness are finally presented, also evidencing the aspects that limit a wider diffusion.

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Section: Nanofillers For Epoxy Resinsmentioning

confidence: 99%

Section: Production Of Nanocompositesmentioning

confidence: 99%

Section: Production Of Nanocompositesmentioning

confidence: 99%

Section: Properties Of the Epoxy Nanocompositesmentioning

confidence: 99%

Section: Properties Of the Epoxy Nanocompositesmentioning

confidence: 99%

See 3 more Smart Citations

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Frigione

Lettieri

2020

Materials

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Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

Kim,

Lee,

Zhang

et al. 2023

Advanced Science

105

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Stealth technology is used to enhance the survival of military equipment in the field of military surveillance, as it utilizes a combination of techniques to render itself undetectable by enemy radar systems. Radar absorbing materials (RAMs) are specialized materials used to reduce the reflection (or absorption) of radar signals to provide stealth capability, which is a core component of passive countermeasures in military applications. The properties of RAMs can be optimized by adjusting their composition, microstructure, and surface geometry. Carbon‐based materials present a promising approach for the fabrication of ultrathin, versatile, and high‐performance RAMs due to their large specific surface area, lightweight, excellent dielectric properties, high electrical conductivity, and stability under harsh conditions. This review begins with a brief history of stealth technology and an introduction to electromagnetic waves, radar systems, and radar absorbing materials. This is followed by a discussion of recent research progress in carbon‐based RAMs, including carbon blacks, carbon fibers, carbon nanotubes, graphite, graphene, and MXene, along with an in‐depth examination of the principles and strategies on electromagnetic attenuation characteristics. Hope this review will offer fresh perspectives on the design and fabrication of carbon‐based RAMs, thereby fostering a deeper fundamental understanding and promoting practical applications.

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High‐thermal conductivities of epoxy composites via p‐phenylenediamine interfacial modification and process intensification

Bao

Cui

et al. 2021

J of Applied Polymer Sci

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High loadings of fillers are usually needed to achieve high‐thermal conductivity (TC) of polymer‐based composites, which inevitably sacrifices processability and meanwhile causes high‐cost. Therefore, it is of great significance to achieve high‐TC composites under low‐filler loading. Here, a novel p‐phenylenediamine (PPD) modified expanded graphite (EG‐PPD)/epoxy (EP) composite with high TC and low‐filler content was successfully prepared via pre‐dispersion and vacuum assisted mixing strategy. With the improved interfacial compatibility between EG and EP by PPD, the prepared EG‐PPD/EP composite exhibited excellent thermal management performance, resulting in the TC of which reached 4.00 W·m−1·K−1 with only 10 wt% (5.59 vol%) of EG‐PPD, which is approximately 19 times higher than that of pure EP. Meantime, the interface thermal resistance of EG‐PPD/EP composite between EG‐PPD and EP is reduced by 33% compared with EG/EP composite. This composite with excellent TC property is expected to be used in thermal management field.

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Amine-terminated chain-grafted nanodiamond/epoxy nanocomposites as interfacial materials: Thermal conductivity and fracture resistance

Cited by 54 publications

References 57 publications

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Recent Advances and Trends of Nanofilled/Nanostructured Epoxies

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

High‐thermal conductivities of epoxy composites via p‐phenylenediamine interfacial modification and process intensification

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