CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Tao Liu,Naisheng Guo,Zhanping You,Yiqiu Tan,Chenze Fang
The purpose of this study is to assess the effect of polyurethane solid-solid phase change materials (PUSSPCMs) and polyethylene glycol (PEG4000) on the thermoregulatory and rheological properties of asphalt , as well as their potential for regulating asphalt pavement temperature. The chemical and thermodynamic characteristics of PEG4000 and PUSSPCMs were investigated using infrared spectroscopy (FTIR), adsorption test, polarized light microscopy (POM), X-ray diffractometer (XRD), differential scanning calorimetry (DSC), thermogravimetric (TG), and atomic force microscopy (AFM). Meanwhile, the effects of PEG4000 and PUSSPCMs on asphalt road performance and micromorphology were determined by tests of thermoregulation, three major indexes, DSR segregation, and scanning electron microscopy (SEM). The results indicate that PUSSPCMs have no hydroxyl characteristic peaks of PEG4000 and isocyanate bonds after the complete reaction. PUSSPCMs exhibit better phase stability over PEG4000, the soft segment for thermal storage changes from crystalline to amorphous and is limited by the hard segment micro-region to maintain a stable solid phase. PUSSPCMs exhibit slightly weaker thermal storage properties than PEG4000, while the thermal stability and elastic modulus are stronger. PUSSPCMs-modified asphalt performs lower thermoregulation properties than PEG4000-modified asphalt, which improves with the increasing soft segments. Furthermore, the advantages of PUSSPCMs-modified asphalt are in terms of basic physical, rheological properties and storage stability. The micromorphology of PUSSPCMs-modified asphalt shows no visible cracks compared to PEG4000-modified asphalt and flattens with soft segment rises, which contributes to the thermoregulation and rheological properties of asphalt.
研究领域:
土木工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Junyao Chen,Sheng Cao,Yuwei Liu,Shihua Qin,Huiying Li,Tao Yang,Jialong Zhao,Bingsuo Zou
Electrochromic windows can control the amount of sunlight entering buildings, thus enabling thermal regulation and offering a significant opportunity to reduce building energy consumption. However, current electrochromic windows encounter difficulties with multi-color control and fully independent adjustment of visible light and near-infrared heat. Herein, this work introduces an advanced multi-color four-mode dual-band electrochromic smart window (DESW) that not only showcases various color transformations but also independently manages visible light and near-infrared heat from solar radiation, providing year-round thermal regulation for buildings. This device features a zinc anode with Prussian blue analogues and tungsten oxide film electrodes. Its optical state superposition effect allows for a range of color transformations (yellow, orange, green, and black), enhancing visual appeal and offering four distinct optical states for precise control of visible light and near-infrared transmittance. Simulation results show that this device achieves greater energy efficiency than commercial glass in most global climates throughout the year. Moreover, the energy generated by this multi-color four-mode DESW can be used to power low-energy devices within the building, further decreasing overall energy consumption. This research opens up extensive possibilities for smart window design and supports the development of green buildings, contributing to global carbon neutrality and sustainable development.
研究领域:
建筑材料
·
能源技术
·
光学材料
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Jun-Feng Su,Xiao-Nan Su,Qin-Yu Xing,Qian Sun,Xin-Yu Wang,Zhi-Yong Tan
This study presents an innovative microcapsule system that simultaneously enables phase-change thermal regulation and autonomous self-healing in bitumen pavements. Using optimized in-situ polymerization, we engineered microcapsules with a hexadecane core (18.1 °C phase transition, 237 J/g latent heat) encapsulated in a robust HMMM shell (2–3 μm thickness). Structural characterization (FT-IR, electron microscopy) confirmed uniform spherical morphology (15–25 μm diameter). The microcapsules demonstrated outstanding thermal stability, retaining 95.8 % enthalpy after 500 thermal cycles (-10 °C to 60 °C) and resisting degradation up to 250 °C. When incorporated into bitumen at 5.0 wt%, the system reduced peak surface temperature by 12.3 °C under 1 kW/m² radiation while improving aging resistance (14.7 % lower G* after RTFO/PAV). Penetration tests showed enhanced temperature susceptibility, with aged modified bitumen stabilizing at 32–41 dmm versus 35–60 dmm for conventional bitumen. At 10.0 wt%, the softening point increased to 56.8 °C, confirming superior high-temperature stability. The self-healing efficiency reached 55.2 % at 20 °C (BOEF test), with consistent performance over multiple cycles (57 %→52 % after six cycles). Nano-XCT verified homogeneous dispersion, and interfacial analysis indicated strong microcapsule-matrix bonding. Crucially, the phase-change behavior facilitates crack repair by creating optimal thermal conditions for healing. This dual-functional system offers a holistic solution for pavement durability, extending service life while minimizing maintenance—a transformative advancement for sustainable infrastructure.
研究领域:
材料科学
·
道路工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2015
·
IF 5.337
Huanzhi Zhang,Yongjin Zou,Yujia Sun,Lixian Sun,Fen Xu,Jian Zhang,Huaiying Zhou
Phase-change materials (PCMs) have promising applications in the fields of solar energy storage, energy conservation in buildings , thermal insulation , and thermal regulation. In this study, novel multifunctional composite films were prepared via a thermosetting process using poly(vinyl chloride) (PVC) as a film matrix, microencapsulated PCMs (micro-PCMs) as a temperature-regulating additive and TiO 2 nanoparticles (nano-TiO 2 ) as a UV-blocking additive. The latent heat of the film fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 is 9.226 J/g. The film also shows high thermal stability, with no obvious change in thermal performance after 100 heating–cooling cycles. The temperature of a space enclosed by the film fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 can be controlled in the range 25–28 °C for 3298 s. The composite films exhibit a significantly decreased UV transmittance due to the UV absorption of nano-TiO 2 . Furthermore, the thermal conductivity of the sample fabricated with 6 wt% micro-PCMs and 6 wt% nano-TiO 2 is 0.2356 W/(m K), which is comparable with that of a pure PVC film. These findings indicate that the novel thermal-insulating film is promising for use in energy-efficient building and automobile applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 18
·10024-10029
·
IF 3.049
Chunming Chen,Zhonghua Chen,Xingrong Zeng,Fei Yu
We herein report the preparation of phase change nanocapsules with undecanoic acid (UA) as the core and a styrene–butyl acrylate copolymer as the shell by miniemulsion polymerization using interfacial redox initiation. The morphology, particle size, thermal properties, and structure of the nanocapsules were characterized by transmission electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. Further, the cotton fiber was dissolved in hydroxyl-functionalized ionic liquid 1-(3-chloro-2-hydroxypropyl)-3-methyl imidazolium chloride, and then the nanoencapsulated UA was immobilized on the cotton fiber by mixing the solution with the phase change nanocapsule emulsion. The desired thermoregulating fabrics were then recovered by vacuum suction filtration and drying, and their surface morphologies and thermoregulating properties were evaluated. The nanocapsules were found to be of a regular spherical shape with a diameter ranging from 90 to 110 nm, and they exhibit a phase change temperature of 29.3 °C. Finally, the prepared thermoregulating non-woven fabrics exhibited excellent thermal reliability, air permeability, and thermoregulating capability.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2024
·
IF 3.7
Weidong Wu,Yukun Zeng,Chen Zhou,Xin Zhou,Shengyang Yang
Fabric multifunctionality offers resource savings and enhanced human comfort. This study innovatively integrates cooling, heating, and antimicrobial properties within a Janus fabric, surpassing previous research focused solely on cooling or heating. Different effects are achieved by applying distinct coatings to each side of the fabric. One graphene oxide (GO) coating exhibits exceptional light-to-heat conversion, absorbing and transforming light energy into heat, thereby elevating fabric temperature by 15.4 °C, 22.7 °C, and 43.7 °C under 0.2, 0.5, and 1 sun irradiation, respectively. Conversely, a hydrogel coating on one side absorbs water, facilitating heat dissipation through evaporation upon light exposure, reducing fabric temperature by 5.9 °C, 8.4 °C, and 7.1 °C in 0.2, 0.5, and 1 sun irradiation, respectively. Moreover, both sides of Janus fabric exhibit potent antimicrobial properties, ensuring fabric hygiene. This work presents a feasible solution to address crucial challenges in fabric thermal regulation, providing a smart approach for intelligent adjustment of body comfort in both summer and winter. By integrating heating and cooling capabilities along with antimicrobial properties, this study promotes sustainable development in textile techniques.
研究领域:
材料科学
·
纺织工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jiawei Wu,Run Hu,Shaoning Zeng,Wang Xi,Shiyao Huang,Junhui Deng,Guangming Tao
Integrating personal thermoregulation technologies into wearable textiles has enabled extensive and profound technological breakthroughs in energy savings, thermal comfort, wearable electronics, intelligent fabrics, and so forth. Nevertheless, previous studies have suffered from long-standing issues such as limited working temperature, poor comfort, and weak reliability of the textiles. Here, we demonstrate a skin-friendly personal insulation textile and a thermoregulation textile that can perform both passive heating and cooling using the same piece of textile with zero energy input. The insulation textile material is composed of biomaterial microstructured fibers that exhibit good thermal insulation, low thermal emissivity, and good dyeability. By filling these microstructure fibers with biocompatible phase-change materials and coating them with polydimethylsiloxane, the insulation textile becomes a thermoregulation textile that shows good water hydrophobicity, high mechanical robustness, and high working stability. The proposed thermoregulation textile exhibits slow heating/cooling rates with improved thermal comfort, offering feasible and adaptive options for personal cooling/heating scenarios and enabling scalable manufacturing for practical applications.
研究领域:
材料科学
·
纺织工程
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Yuefan Hu,Zicheng Zhang,Dengfeng Zhang,Fei Xiu,Minjie Zhang,Xuemei Dong,Cheng Song,Zepu Zhang,Chen Chen,Xinyi Xie,Juqing Liu,Wei Huang
Precise and remote control in thermoregulation is essential in intelligent life. Heating films with appropriate electrical, optical, and mechanical properties are key components of thermal control systems for versatile applications. Here, we demonstrate an adaptive thermoregulation remote collaborative platform using a highly transparent and stable flexible passivated silver nanowire (AgNW) electrothermal film. The perfluorinated polymeric sulfonic acid passivation of the AgNW network can inactivate the film to possess superior stability of continuous heating operation (42 °C, 48 h) and high optical transmittance in the visible region (>85%, 4 months) under ambient conditions, as well as a weld nanowire junction for efficient and tunable thermal emission with low operating voltage (20–100 °C, <6 V). By further integrating the heater with a remote negative feedback adaptive control circuit, this system can realize wireless rapid precision temperature control (<1 °C), effective energy utilization with a power saving of ∼34%, and adaptive regulatory stability against external interference. Utilizing the intelligent heater as a tint film has reliable capability of antifog and snow/ice removal, showing great potential in smart homes, automotive electronics, and smart agriculture.
研究领域:
材料科学
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yinghao Zhang,Tianshi Li,Yifan Jin,Lixia Bao,Li Feng,Chengxi Lai,Kun Wei,Sibo Qiao,Qiue Cao,Jiliang Wang
Phase change materials (PCMs) have been widely used in the sectors of solar energy conversion, thermal regulation, waste heat recovery, etc. However, it is still a huge challenge to utilize biodegradable room-temperature PCMs in thermo-regulated smart homes due to their poor shape stability and processability at high temperature. Herein, we report solvent-free reactive extrusion processes to prepare a thermoplastic sugarcane bagasse-based biocomposite (named TBP-50) containing 50 wt% dodecanol-based nanoencapsulated PCM (NPCM). The developed TBP-50 with the phase change point near room temperature and the enthalpy of about 52 J g −1 is thermo-processable and thermally stable below 180 °C. The high mass ratio of supramolecular lock-shell NPCM (50 wt%) endows TBP-50 with excellent heating/cooling cycling reliability and thermal regulation ability that have been verified by a series of simulated calculations about an incubator (30 L) and a bedroom (4.5 m × 3.5 m × 3 m) decorated with dimensionally stable TBP-50 sheets. Moreover, TBP-50 shows acceptable mechanical properties: the tensile strength of 9.6 MPa, the tensile modulus of 6.73 GPa, the impact strength of 3.18 kJ m −2 , and the Shore surface hardness of 68 D. Obvious biodegradation in the local soil environment is detected for TBP-50 and the six probable degradation steps are proposed in this work. Considering the next generation of energy-saving and environmental-friendly home-decorating materials, the herein prepared TBP-50 biocomposite via typical extrusion molding is an ideal choice as ceiling, clapboard, floorboard, wardrobe, desk, and so on.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 21
·
IF 12.5
Siru Chen,Kaixin Lin,Sai Liu,Chui Ting Kwok,Lin Liang,Ze Li,Shuangdui Wu,Ziai Liu,Chuyao Wang,Aiqiang Pan,Jianheng Chen,Tsz Chung Ho,Shauhrat S. Chopra,Yihao Zhu,Qingping Sun,Wei Li,Borong Lin,Chi Yan Tso
Tremendous efforts have been dedicated to facilitating heat dissipation into cold universe through radiative cooling. Nevertheless, its applications remain limited by overcooling in cold conditions and reduced effectiveness under nonclear skies. We present a robust metafilm inspired by the adaptive capabilities of horned lizards (Phrynosoma) to overcome these challenges. This design extends energy harvesting to rainy conditions while maintaining thermal regulation on clear days. The metafilm features a sandwich structure with fluorinated ethylene propylene/indium tin oxide outer layers for raindrop-induced electricity generation and thermochromic core layers for self-regulated heating and cooling. It achieves an optical contrast exceeding 63% in the visible spectrum, enabling sub-ambient cooling in hot conditions and above-ambient heating when cold. In addition, it demonstrates efficient droplet-induced electricity generation, delivering a high-voltage output of 208 volts with exceptional long-term stability. This multifunctional metafilm overcomes key limitations of traditional radiative coolers, offering a versatile approach for all-weather energy harvesting.
研究领域:
材料科学
·
能源工程
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MECHANISMS OF AGEING AND DEVELOPMENT
·
2023
·
IF 5.3
Shuzhen Yu,Yating Shao,Qineng Qiu,Yu Cheng,Renkun Qing,Cai-Feng Wang,Su Chen,Chen Xu
Methods allowing light energy to be modulated in a controllable fashion are potentially important for finding the correlation between light-related environmental factors and aging-related lifespan. Here, we report photo- and thermo-regulation based on photonic crystals (PCs) for extended longevity of C. elegans . We show that PCs can function as a regulator of visible spectrum to tune photonic energy received by C.elegans . We provide direct evidence that lifespan depends on photonic energy, and the use of PCs reflecting blue light (440–537 nm) gives 8.3 % increasement in lifespan. We demonstrate that the exposure to modulated light alleviates photo-oxidative stress and unfolded-protein response. We realize reflective passive cooling temperature using PCs, and favorable low temperature could be created for worms to extend lifespan. This work offers a new path based on PCs to resist negative effects light and temperature for longevity, provides an available platform for studying the role of light in aging.
研究领域:
生物学
·
老年学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
IONICS
·
2019
·Vol. 26
·期 3
·1249-1259
·
IF 2.289
Miao Rongrong,Kang Shimin,Liao Wenbo,Wang Yanming,Liu Jian,Zhong Guoyu,Wu Hangxiao,Zhang Jingui
Silicon is one of the most promising anode candidates for next-generation Li-ion batteries. Inert salt, acting as heat absorbent in magnesiothermic reduction, is playing a crucial role in scaled and economic derivation of Si from SiO 2 . Herein, the regulating effects of KCl and NaCl as heat absorbent on particle size, morphology and especially electrochemical behavior of obtained silicon are comparatively investigated. Although NaCl assists to get ultrafine nm-Si (~ 12.7 nm), inexpungible SiO x is accompanied, leading to lower reversible capacity (only 496.9 mAh g −1 ) and first coulombic efficiency (~ 48.7%). Comparatively, superior heat regulation of KCl facilitates to form uniform and well-crystalized Si nanoparticles (nano-Si KCl ) with vital size domain (~ 54.6 nm) and reduced surface energy restrains redundant SiO x formation, thus obtaining improved reversible capacity (2201 mAh g −1 ) and cycling stability. After further carbon coating on nano-Si KCl , an excellent capacity retention of 89.4% over 300 cycles can be obtained by nano-Si KCl @C composite.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）