Thermally remendable bismalemide-MWCNT/DA-epoxy nanocomposite via Diels-Alder bonding

Dhanaraju, Goteti; Ben, B. Satish; Pittala, Raj Kumar

doi:10.1016/j.polymer.2022.124734

Cited by 13 publications

(9 citation statements)

References 50 publications

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“…51 In the FTIR spectrum of MWCNTs, the peaks at 3554, 3478, 3408, 3140, 1404, and 1129 cm −1 are attributed to the stretching vibrations of –OH and C–O, and the conjugate stretching vibration of CC, respectively. 52 The two peaks at 3483 and 1633 cm −1 in the spectrum of EG are attributed to the stretching vibrations of the single bonds of –OH and CC, respectively. 53 Furthermore, the obvious characteristic peak of PW at 1468 cm −1 was not observed for sample S5.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Fang

Zhou

et al. 2023

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 99%

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Fang

Zhou

et al. 2023

J. Mater. Chem. C

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“…Compared with the PTDA, the peaks showed a redshift, which indicated that the hydrogen-bond interactions were weakened after adding the PEG. In addition, in the inset picture, the typical absorption peak of the DA addition bond represented by succinimide rings occurred at about 1773 cm –1 …”

Section: Resultsmentioning

confidence: 99%

“…In addition, in the inset picture, the typical absorption peak of the DA addition bond represented by succinimide rings occurred at about 1773 cm −1 . 35 As for the SSPCMs, the enthalpy value only comes from PEG, and the PTDA almost has no contribution. 32 The influence of the dynamic crosslinking PTDA network on the crystalline properties and crystal structure of PEG can be characterized via XRD and DSC.…”

Section: Methodsmentioning

confidence: 97%

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Lin

Ying

et al. 2023

ACS Appl. Polym. Mater.

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Phase change materials (PCMs) can absorb and release energy while keeping the temperature constant; hence, they play a crucial role in the thermal management field. Shape-stable phase change materials (SSPCMs) were synthesized by chemical crosslinking to address the liquid leakage problem of solid−liquid phase change materials (SLPCMs) during the phase change process. However, the abandoned SSPCMs cannot be reused and recycled, which seriously restricts their practical application. Herein, a polyurethane network containing Diels−Alder bonds was used as the enclosure compound to obtain the encapsulation of polyethylene glycol (PEG), and then, the chemical structure, crystallization behavior, and phase transition ability of SSPCMs were systematically investigated. The results showed that the SSPCMs-3 sample (300 wt % PEG) had the best comprehensive performance, an enthalpy value of 171.7 J/g, and no leakage at 80 °C for 1 h. Moreover, the structure, crystallization behavior, and phase transition ability of SSPCMs could also basically remain unchanged after multiple thermal cycling and reprocessing.

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“…Therefore, these SHEs are typically used at temperatures not exceeding 120 °C. Moreover, the modulus of most of these SHEs is in the range of 1.5–3 GPa, ,,,− which is lower than that of engineering epoxy resins. It is worth noting that due to the monotonicity of these DA reactions, the healing temperature and modulus of these SHEs vary over a narrow range.…”

Section: Introductionmentioning

confidence: 90%

Highly Thermal Stable, Stiff, and Recyclable Self-Healing Epoxy Based on Diels–Alder Reaction

Wang,

Chen,

Xing

et al. 2023

ACS Appl. Polym. Mater.

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The low heat resistance of self-healing polymers based on the Diels−Alder (DA) reaction between 2-substituted furans with maleimide has significantly limited their practical applications. To address this limitation, 3-substituted furans instead of 2-substituted furans were used in the reaction with maleimide, which formed a thermally stable conjugated structure in the adduct. As a result, the retro-DA reaction temperature was increased from 120 to 240 °C. Based on such a reaction, a selfhealing epoxy resin (SHE) with exceptional heat resistance was successfully synthesized. In addition to its thermal stability, the SHE exhibited a flexural strength and modulus reaching 141.1 MPa and 4.29 GPa, respectively, which were comparable to those of engineering epoxy resins. Moreover, the SHE demonstrated a remarkable self-healing ability and recycling capacity. The healing efficiency of fracture toughness was found to be as high as 85.4%, and the recovery efficiency of flexural strength reached 89.2% after the sample was crushed into powders and recured.

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Thermally remendable bismalemide-MWCNT/DA-epoxy nanocomposite via Diels-Alder bonding

Cited by 13 publications

References 50 publications

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Highly Thermal Stable, Stiff, and Recyclable Self-Healing Epoxy Based on Diels–Alder Reaction

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Thermally remendable bismalemide-MWCNT/DA-epoxy nanocomposite via Diels-Alder bonding

Cited by 13 publications

References 50 publications

Multifunctional MIL-101(Cr)-NH2/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Multifunctional MIL-101(Cr)-NH2/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Highly Thermal Stable, Stiff, and Recyclable Self-Healing Epoxy Based on Diels–Alder Reaction

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Product

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Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices