Hydrate salt/self‐curing acrylic resin form‐stable phase change materials with enhanced surface stability and thermal properties via the incorporation of graphene oxide

Abstract

This work presents a novel eutectic hydrate salt/self-curing acrylic resin formstable phase change materials (PCMs) composite (EHS/SCR) with favorable form-stable performances for heat energy storage. Further, to improve the surface stability, latent heat and thermal conductivity of the EHS/SCR particles, graphene oxide (GO) used as cladding materials is incorporated onto the surface of the EHS/SCR particles to prepare the GO modified EHS/SCR phase change composite (EGO). The obtained results indicate that the GO-targeted absorption model has achieved the enhancements in stability and thermal properties of EHS/SCR while making use of GO in an efficient and economical way. To be specific, with the introduction of GO of only 1.07 wt%, the thermal conductivity of 0.508 W/mÁK is achieved, the value shows a significant rise of 128.6% compared with the EHS/SCR of 0.222 W/mÁK. Additionally, the maximum latent heat of EGO-6 is up to 90.4 J/g, which exhibits a 3.19-fold increase compared against that of the uncoated EHS/SCR. Moreover, the prepared EGO composite PCM remain a good thermal cycling reliability after 300 thermal cycles. This work provides a novel opportunity to improve the performance of form-stable PCM composites with an intelligent manufactureoriented pattern. K E Y W O R D Sgraphene oxide, hydrate salt, self-curing acrylic resin, surface stability, thermal conductivity

Strong, thermo-reversible salogels with boronate ester bonds as thermal energy storage materials

“…2,3 Several strategies using inorganic matrices and polymer networks were developed to provide shape stabilization of the salt hydrate in its liquid state. [3][4][5][6][7][8] Polymers such as polyacrylamide, 4,8 selfcuring acrylic resin, 5 UV cured polyurethane acrylate, 6 and poly (acrylate sodium) 7 have been used as shape stabilizing matrices for salt hydrates and their eutectics. PCM loading varying from 42 to 90 wt% were reported with these matrices, which resulted in a lowering of heat of fusion and changes in the phase change temperature of the salt hydrate PCM.…”

“…PCM loading varying from 42 to 90 wt% were reported with these matrices, which resulted in a lowering of heat of fusion and changes in the phase change temperature of the salt hydrate PCM. [4][5][6][7][8] However, these efforts were focused on developing materials that are permanently crosslinked, [4][5][6][7][8] which makes the removal of the PCM from heat exchange modules difficult at the end of their life cycle. In contrast, temperature-responsive property of the shape stabilizing matrix allows for easy lling and removal of the PCM from thermal storage module due to their ability to reversibly transition from gel to sol above a gel transition temperature (T gel ).…”

Modification of Cellulose Nanocrystals With 2-Carboxyethyl Acrylate in the Presence of Epoxy Resin for Enhancing its Adhesive Properties

“…TGA is an important parameter because of information about the dynamics of mass loss. Unstable emissions during the decomposition process are of great value (Akgün et al, 2016;Souza Neto et al, 2019;Liu et al, 2020). The MCNCs reinforced liquid compound transformation into the poly-condensation with excellent growth after dispersion in the epoxy resin system.…”

Enhancing the Heat Storage Performance of a Na2HPO4·12H2O System via Introducing Multiwalled Carbon Nanotubes

“…For example, Yu et al 39 prepared shape-stable graphene-modified hydrated salt/UVcurable urethane acrylate resin copolymers by the limiting effect of graphene, and the phase transition temperature of the copolymers could be continuously adjusted by the effect of graphene on the entropy of the hydrated salt PCM system. Yang et al 40 prepared a new shape-stable eutectic hydrate/selfcuring acrylic resin composite (EHS/SCR), with good shape stability properties for thermal energy storage. Gao et al 16 through the mechanical mixing method prepared a novel multiwalled carbon nanotube-modified hydrated salt/sodium polyacrylate copolymer hydrogel (MWCNT-GS/PAAS).…”