Study on rheological properties and phase-change temperature control of asphalt modified by polyurethane solid–solid phase change material

Wei, Kun; Wang, Xiaoqing; Ma, Biao; Shi, Wenshuo; Duan, Shiyu; Liu, Fangshu

doi:10.1016/j.solener.2019.11.007

Cited by 57 publications

(6 citation statements)

References 26 publications

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“…0.1 at 2 °C/min). 41 Therefore, the selected paraffin wax/bituminous blend proposed here shows great potential for its use for solar energy storage applications with thermoregulation purposes.…”

Section: Resultsmentioning

confidence: 92%

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Study on Miscibility, Thermomechanical Behavior, and Thermoregulation Performance of Paraffin Wax/Bituminous Blends for Solar Thermal Energy Storage Applications

Gutiérrez-Blandón,

Cuadri,

Delgado-Sánchez

et al. 2024

Energy Fuels

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The goal of this work was to study the miscibility, thermal stability, thermomechanical properties, and temperature regulation performance of paraffin wax/bitumen blends for their potential use in solar thermal energy storage applications. Results indicated that these blends present a suitable thermal stability, and their thermomechanical properties are strongly dependent on composition, developed microstructure, and temperature. Among all paraffin wax concentrations studied, the blend containing 40 wt % paraffin wax displays enhanced binder elastic properties together with lower thermal susceptibility compared to base bitumen. In addition, this binder also presents improved thermal properties (thermal conductivity and specific heat capacity) and still maintains a high crystallinity, thereby retaining a large enough latent heat to be used for thermal energy storage. Thus, results from the temperature regulation test, which was conducted by subjecting the sample to simulated solar irradiation at a constant radiant flux density, provide a higher latent heat thermoregulation index value than other microencapsulated phase change materials systems. Therefore, it can be stated that paraffin wax/bitumen blends are promising base materials to formulate form-stable products for thermal energy storage applications for thermoregulation purposes.

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Section: Resultsmentioning

confidence: 92%

“…0.7 at a fast cooling rate of 10 °C/min) or 7 wt % polyurethane solid–solid PCM (LHTI value of ca. 0.1 at 2 °C/min) . Therefore, the selected paraffin wax/bituminous blend proposed here shows great potential for its use for solar energy storage applications with thermoregulation purposes.…”

Section: Resultsmentioning

confidence: 99%

Study on Miscibility, Thermomechanical Behavior, and Thermoregulation Performance of Paraffin Wax/Bituminous Blends for Solar Thermal Energy Storage Applications

Gutiérrez-Blandón,

Cuadri,

Delgado-Sánchez

et al. 2024

Energy Fuels

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“…The C p is higher during the phase change because more heat is required to induce phase change and increase temperature. [ 50 ] Accordingly, there is a rapid decrease in C p when the phase change is completed. The change in α is small in the investigated temperature range.…”

Section: Resultsmentioning

confidence: 99%

Covalently Functionalized Leakage‐Free Healable Phase‐Change Interface Materials with Extraordinary High‐Thermal Conductivity and Low‐Thermal Resistance

Jaleel

Baik

2023

Advanced Materials

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Phase-change materials (PCMs) have received considerable attention to take advantage of both pad-type and grease-type thermal interface materials (TIMs). However, the critical drawbacks of leaking, non-recyclability, and low thermal conductivity (𝜿) hinder industrial applications of PCM TIMs. Here, leakage-free healable PCM TIMs with extraordinarily high 𝜿 and low total thermal resistance (R t ) are reported. The matrix material (OP) is synthesized by covalently functionalizing octadecanol PCM with polyethylene-co-methyl acrylate-co-glycidyl methacrylate polymer through the nucleophilic epoxy ring opening reaction. The OP changes from semicrystalline to amorphous above the phase-transition temperature, preventing leaking. The hydrogen-bondforming functional groups in OP enable nearly perfect healing efficiencies in tensile strength (99.7%), 𝜿 (97.0%), and R t (97.4%). Elaborately designed thermally conductive fillers, silver flakes and multiwalled carbon nanotubes decorated with silver nanoparticles (nAgMWNTs), are additionally introduced in the OP matrix (OP-Ag-nAgMWNT). The nAgMWNTs bridge silver-flake islands, resulting in extraordinarily high 𝜿 (43.4 W m −1 K −1 ) and low R t (30.5 mm 2 K W −1 ) compared with PCM TIMs in the literature. Excellent heat dissipation and recycling demonstration of the OP-Ag-nAgMWNT is also carried out using a computer graphic processing unit. The OP-Ag-nAgMWNT is a promising future TIM for thermal management of mechanical and electrical devices.

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“…(2019) [127] prepared a PCM modified asphalt by adding polyurethane solid-solid PCM into the asphalt. It was found that the specific heat capacity and thermal conductivity of the modified asphalt increased with the increase of the amount of PCM, but the thermal conductivity was always smaller than that of the base asphalt.…”

Section: The Methods Of Pcms Incorporationmentioning

confidence: 99%

Review of regulation techniques of asphalt pavement high temperature for climate change adaptation

Gong

Zhang

et al. 2022

J Infrastruct Preserv Resil

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Asphalt pavement is vulnerable to the temperature rising and extremely high-temperature weather caused by climate change. The regulation techniques of asphalt pavement high temperature have become a growing concern to adapt to climate change. This paper reviewed the state of the art on regulating asphalt pavement high temperature. Firstly, the influencing factors and potential regulation paths of asphalt pavement temperature were summarized. The regulation techniques were categorized into two categories. One is to regulate the heat transfer process, including enhancing reflection, increasing thermal resistance, and evaporation cooling. The other is to regulate through heat collection and transfer or conversion, including embedded heat exchange system, phase change asphalt pavement, and thermoelectric system. Then, the regulation techniques in the literature were reviewed one by one in terms of cooling effects and pavement performance. The issues that still need to be improved were also discussed. Finally, the regulation techniques were compared from the perspectives of theoretical cooling effects, construction convenience, and required maintenance. It can provide reference for understanding the development status of asphalt pavement high temperature regulation techniques and technique selection in practice.

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Study on rheological properties and phase-change temperature control of asphalt modified by polyurethane solid–solid phase change material

Cited by 57 publications

References 26 publications

Study on Miscibility, Thermomechanical Behavior, and Thermoregulation Performance of Paraffin Wax/Bituminous Blends for Solar Thermal Energy Storage Applications

Study on Miscibility, Thermomechanical Behavior, and Thermoregulation Performance of Paraffin Wax/Bituminous Blends for Solar Thermal Energy Storage Applications

Covalently Functionalized Leakage‐Free Healable Phase‐Change Interface Materials with Extraordinary High‐Thermal Conductivity and Low‐Thermal Resistance

Review of regulation techniques of asphalt pavement high temperature for climate change adaptation

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