Mechanical and thermal characterisation of multifunctional composites incorporating phase change materials

Yoo, Sanghyun; Kandare, Everson; Mahendrarajah, Ghowsalya; Al-Maadeed, Somaya; Khatibi, Akbar Afaghi

doi:10.1177/0021998316673894

Cited by 17 publications

(9 citation statements)

References 31 publications

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“…Again, the melting and crystallization temperatures of the PCM phase do not follow a specific trend with the MC concentration, but the values of T m are generally lower than those of the matrices and the values of T c generally higher, which can be due to the higher thermal conductivity imparted by the presence of carbon fibers. The melting and crystallization enthalpy values increase with the nominal MC content, up to 66.8 J/g for the sample EL‐MC40‐ CF , which is considerably higher than any values obtained previously for laminates of the same kind, that is, composed of a polymer matrix, a continuous fiber fabric reinforcement and a PCM, considering not only the work of our group . This indicates that the Elium resin is suitable to preserve the heat storage ability of the embedded PCM.…”

Section: Resultsmentioning

confidence: 99%

“…Even though this is an interesting research field with many potential applications, little research has been carried out so far to produce such multifunctional composites. Wirtz et al prepared a sandwich composite containing shape‐stabilized paraffin for the temperature control of electronic devices, while Yoo et al developed and characterized glass/epoxy laminates containing paraffin microcapsules. Recently, our group prepared epoxy/carbon laminates containing paraffin shape‐stabilized with carbon nanotubes (CNTs) , polyamide/glass laminates containing a microencapsulated and a shape‐stabilized PCM , and two types of semi‐structural short carbon fibers composites including paraffin microcapsules, based on a thermoplastic (polyamide 12) or a thermosetting (epoxy) matrix, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Novel reactive thermoplastic resin as a matrix for laminates containing phase change microcapsules

2019

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This work aims at developing multifunctional thermoplastic laminates combining structural and heat storage/ management functions. The laminates are constituted by paraffin microcapsules as phase change materials (PCM), continuous carbon fibers, and a novel thermoplastic liquid methyl methacrylate resin (Elium), processable as a thermoset. The characterization aims to study how the paraffin microcapsules influence the thermo-mechanical properties and thermal management performance of Elium and of the relative composite laminates. For the Elium/PCM systems, the phase change enthalpy increased with the experimental PCM concentration up to 101 J/g, but the mechanical properties decreased concurrently. The melting enthalpy of the laminates also increased with the microcapsule amount, up to 66.8 J/g, which indicates that the mild conditions applied in the processing of the liquid resin allow the integrity of the microcapsules to be preserved. This is also confirmed by the improved thermal management performance observed through thermal camera imaging measurements. Microscopy techniques showed that the PCM phase is preferentially distributed in the interlaminar region, which accounts for the observed decrease in the interlaminar strength and the flexural properties with an increase in the PCM content. These results show a potential for the future development of multifunctional thermoplastic composites with elevated thermal energy storage capabilities. POLYM. COMPOS., 40:3711-3724, 2019.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel reactive thermoplastic resin as a matrix for laminates containing phase change microcapsules

2019

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“…On the other hand, a weak entangling has occurred in the pure PEG and the 5 wt% composite. Several studies have revealed that the composite morphology is crucial for the improvement of physical and thermal behaviors of a composite. The relationship between the stiffer composites and the silica addition is evident from the SEM morphology of the BP/Q composites (see Figure ).…”

Section: Resultsmentioning

confidence: 99%

Thermal and dynamic mechanical properties of polyethylene glycol/quartz composites for phase change materials

Fauziyah

Hilmi

Zainuri

et al. 2019

J of Applied Polymer Sci

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Polyethylene glycol (PEG)/quartz (denoted as BP/Q) composites have been investigated as candidates of phase change materials (PCMs) due to their thermomechanical properties around the glass transition temperature as well as thermal properties between 30 and 600 C. Quartz (q-SiO 2 ) powders were extracted from local sand in Tanah Laut, Pelaihari, South Kalimantan, Indonesia. The composites were prepared by dispersing q-SiO 2 powders in the PEG matrix followed by the wet mixing process. The thermal properties of the composites were characterized using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), while the thermomechanical properties were examined using a dynamic mechanical analyzer (DMA) in a three-point bending mode around the PEG glass transition temperature range (−100-50 C). The morphology and interface bonding were investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). From the DSC measurement, the endothermic peak of the composites showed a shift of approximately 7-12 C toward higher temperatures than that of the pure polymer. The melting enthalpy values (ΔH m ) of the BP/Q composites covered the required PCM application range, that is, between 139 and 182 J/g. The TGA of the composites showed that thermal degradation occurs in the range of 250-450 C. We found that solid-solid PCMs (ssPCMs) were successfully fabricated with the addition of 10 and 20 wt% q-SiO 2 . From DMA characterization, the BP/Q 20 wt% composite exhibited the maximum E' and the minimum energy dissipation (E"). Its E' value was approximately 250 MPa more than that of the pure PEG. The glass transition (T g ) temperatures of PEG and BP/Q composites (5, 10, and 20 wt%) were around −24.5, −19.1, −17.1, and − 5.3 C, respectively. In addition, the E" and tan δ values decreased with q-SiO 2 filler content. Furthermore, the Cole-Cole plots of the BP/Q composites revealed a better interfacial bonding between the q-SiO 2 and the PEG matrix in the composites with higher silica content. A compact morphology was shown by the BP/Q 20 wt% composite due to high silica concentration.

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“…However, limited research has been carried out so far to produce such structural TES composites. Some examples are reported in the literature of continuous or discontinuous fiber composites with thermosetting [20][21][22][23][24], thermoplastic [25][26][27][28], or reactive thermoplastic [29,30] matrices. However, the research on continuous-fiber composites with a traditional thermoplastic matrix and TES capability is limited to a single work [25], in which the compaction is performed via film stacking.…”

Section: Introductionmentioning

confidence: 99%

Melt-spun polypropylene filaments containing paraffin microcapsules for multifunctional hybrid yarns and smart thermoregulating thermoplastic composites

Fredi¹,

Bruenig²,

Vogel³

et al. 2019

Express Polym. Lett.

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The present work focuses on the development of polypropylene (PP) filaments containing paraffin microcapsules (MC), aimed at being incorporated in hybrid yarns to produce multifunctional thermoplastic laminates for thermal energy storage (TES). Benchmark experiments carried out on a small-scale melt compounder and piston-type melt spinning device resulted in the successful production of single filaments containing up to 30 wt% of MC, with diameters of 70-140 µm depending on the collection speed and a surface roughness that increases with the MC content. An increase in the MC fraction also determines a rise in the complex viscosity, but this effect is less evident at higher shear rates and likely almost negligible at the deformation rates typical of the spinning process. Although the MC have a considerable thermal stability, the compounded mixtures reported a sensible mass loss in isothermal thermogravimetric analysis (TGA) tests, which is linked to a not negligible MC damage during the compounding. Nevertheless, differential scanning calorimetry (DSC) on the spun filaments evidenced an increase in the phase change enthalpy with the MC content up to approx. 48 J/g, which is remarkably higher than that of similar systems reported in the literature. The elastic modulus and the properties at break decrease with an increase in the MC content, but the fiber strength is acceptable to produce a hybrid yarn and a thermoplastic laminate up to a MC fraction of 20 wt%.

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Mechanical and thermal characterisation of multifunctional composites incorporating phase change materials

Cited by 17 publications

References 31 publications

Novel reactive thermoplastic resin as a matrix for laminates containing phase change microcapsules

Novel reactive thermoplastic resin as a matrix for laminates containing phase change microcapsules

Thermal and dynamic mechanical properties of polyethylene glycol/quartz composites for phase change materials

Melt-spun polypropylene filaments containing paraffin microcapsules for multifunctional hybrid yarns and smart thermoregulating thermoplastic composites

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