INTERNATIONAL JOURNAL OF THERMOPHYSICS
·
2018
·Vol. 39
·期 5
·1-11
·
IF 0.829
Fan Desong,Sun Si,Guo Li
A novel thermal control coating was presented based on the thermochromism of manganite. The pigment of K-doped manganite nanoparticles was dispersed into polymer matrix to prepare the coating with curing below 200 \(^{\circ }\) C. The nanoparticles size mainly distributes around 100–200 nm, and it shows a comparable stoichiometric ratio. The phase transition of the nanoparticles was observed from ferromagnetic metallic to paramagnetic insulator state. With increasing K doping level, the phase transition temperature increases, achieving controllable adjustment. Coating surface with and without pore defect was obtained by different polymer matrix. A sharp emittance variation was observed with increasing temperature in K-doped coating. The variation magnitude of emittance is up to 0.46, which is attractive to space thermal control. It is suggested that the pigment content of 50 wt% is sufficient to realize a large emittance variation.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Qiuping Li,Zerong Duan,Guanghua Wen,Ping Tang,Zibing Hou
Low-basicity fluorine-containing mold flux, which forms a porous slag film with NaF pores, is expected to solve the contradiction between heat transfer and lubrication in the continuous casting process of peritectic steel. Herein, slag films were obtained by slag film heat flow simulator, and the thermal control of NaF pores in the slag film was evaluated by COMSOL. Based on the influence of fluorides on NaF gas generation, mold fluxes consisting of NaF, CaF 2 , and Na 3 AlF 6 were investigated separately at a basicity of 0.9 and a fluorine content of 6 wt%. The comprehensive heat control ability of these slag films ranked in the order: Na 3 AlF 6 > CaF 2 > NaF. Firstly, the slag film using NaF raw material exhibited larger NaF pores (30–50 μm), resulting in higher radiative transmittance and reduced thermal resistance. Its heat control is primarily dominated by the thickness of the film. Further, using CaF 2 raw material, the heat control ability and pore size were between NaF and Na 3 AlF 6 . Its slag film exhibited the highest surface roughness (27.32 μm), with interfacial thermal resistance playing a dominant role. With Na 3 AlF 6 as the fluorine source, the slag film exhibited finer and more uniformly distributed pores (10–30 μm), which enhanced reflectivity and reduced radiative heat transfer. Therefore, this study highlights that Na 3 AlF 6 as a raw material is conducive to low-basicity mold fluxes achieving thermal control through finely dispersed NaF pores.
研究领域:
材料科学
·
冶金工程
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 2
·1145-1157
·
IF 11.806
Duan Xiaoyuan,Cheng Shuaishuai,Tao Rongyao,Zhang Zhiyi,Zhao Guizhe
Graphene was widely used to reinforce rubber composites due to its excellent mechanical and thermal properties. When graphene rubber was applied to tires, it often faces the problem that mechanical properties and thermal control capability could not be optimized simultaneously. The f-(SiO 2 -KH550/GO) (f-SKG) particle with a flexible shell structure and vulcanization effect was chemically grafted on the molecular chain of natural rubber (NR) by the thiol-ene click reaction. Since the sulfhydryl functional groups on the surface of the f-SKG particles could act as a bridge to connect the NR molecular chains, more NR molecules were confined on the surface of the f-SKG particles. This enhanced filler-matrix interface interaction and good dispersibility synergistically enhanced the rubber composites to obtain excellent mechanical properties, low heat generation performance (19 ℃) and good thermal conductivity (0.55 Wm −1 K −1 ). This not only met the requirements of tire rubber for mechanical properties, but also significantly improved the thermal control ability of graphene rubber tires. More importantly, through finite element simulation and experimental verification, the influence of the thermal conductivity and loss factor of rubber on tires was revealed. This strategy provided creative insights for the preparation of high-performance graphene rubber tires. Graphical abstract Graphene-filled rubber with point-surface structure has enhanced interfacial interaction and thermal control ability, which promotes the development of green tires
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Fan Chen,Wenzhe Wang,Hengxin Zhao,Zian Zhang,Nanyu Pang,Yijie Tang,Tian Wang,Chang Liu,Zhenchao Huang,Feiyu Mou,Chaoqun Yu,Haining Zhang
Intra-articular drug injection is an effective treatment for osteoarthritis (OA). However, the rapid clearance of drugs from the joint cavity results in low drug utilization and suboptimal therapeutic outcomes. This study describes MXene-based cartilage-adhesive microspheres for photothermal-controlled hydrophobic drug release and bone marrow mesenchymal stem cell (BMSC) delivery. Nano cationic amylose (NCA) was obtained by modifying amylose with glycidyltrimethylammonium chloride (GTAC), and hydrophobic drug Kartogenin (KGN) was encapsulated in the hydrophobic helical cavity of NCA through ultrasonic treatment, resulting in nano cationic amylose@KGN complexes (NCA@KGN). HAMA/MXene-NCA@KGN (H/M-NCA@KGN) microspheres were prepared using a microfluidic device. These microspheres exhibited excellent biocompatibility, effectively adhered to the cartilage surface, and carried BMSCs. H/M-NCA@KGN microspheres demonstrated photothermal-controlled release of the hydrophobic drug KGN. Notably, KGN promoted the differentiation of BMSCs into chondrocytes, thereby improving the loss of extracellular matrix in joint cartilage. Additionally, appropriate thermal stimulation induced the expression of heat shock protein 70 (HSP70) in OA chondrocytes, providing a protective effect and delaying the progression of OA. H/M-NCA@KGN microspheres enable controlled hydrophobic drug release and stem cell delivery for potential OA treatment applications.
研究领域:
生物医学工程
·
药学
·
组织工程
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Junge Chen,Yang Yu,Aihu Feng,Le Mi,Huixin Xiu,Yun Yu
Thermal control coatings (TCCs) are an essential part of the thermal control systems in the spacecraft. Solar absorptance and emittance are the key performance parameters of TCCs. To develop an ultra-low solar absorption and stable inorganic TCCs for surface radiator, different TCCs were prepared by co-sintering ZnO and SiO 2 nanoparticles to form Zn 2 SiO 4 /SiO 2 pigment in this work, and the optical properties and radiation stability were systematically studied. It is found that the coating based on composite pigment has high reflectivity in the ultraviolet band and excellent optical performance possessing the low solar absorption of 0.06. In addition, the Zn 2 SiO 4 /SiO 2 coating demonstrates the highest proton and electron radiation stability because that SiO 2 between Zn 2 SiO 4 particles acts as the relaxation center of the defects caused by radiation.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yuxin Xiao,Aihu Feng,Junge Chen,Qianying Cao,Le Mi,Yang Yu,Yanfeng Gao,Yun Yu
In this study, the viability of MgGa 2 O 4 as a pigment for thermal control coatings is discussed. Notably, the MgGa 2 O 4 based coating exhibited excellent initial optical properties and irradiation stability. After irradiation with 40 keV proton at a dose of 1.4 × 10 14 P/cm 2 , the optical performance of the coating remained essentially unchanged, while the solar absorption of the coating is still maintained below 0.10 after irradiation with 40 keV electron at a dose of 1.6 × 10 16 e/cm 2 . Further, the mechanism of the optical changes induced by electron irradiation was elucidated through experimental and computational methods. In MgGa 2 O 4 lattice, two different types of oxygen vacancies and a transition process of them were found. This process was accompanied by the leakage of some oxygen atoms from the lattice, leading to an increased number of color centers and the change in optical properties. Despite the solar absorption raised after electron irradiation , the MgGa 2 O 4 based thermal control coating showed minimal change and low end-of-irradiation-life values, which suggests that they have excellent stability and promising applications.
研究领域:
材料科学
·
航天工程
·
光学
✓ 已验证
产品关联
DOI
高影响因子
IEEE TRANSACTIONS ON PLASMA SCIENCE
·
2021
·Vol. 49
·期 12
·3764-3769
·
IF 1.222
Jie-Qing Fan,Yao Li,Fang Zhang,Jian-Hong Hao,Zhi-Wei Dong,Qiang Zhao
To study the electromagnetic radiation effect of a thermal control layer (TCL) on the surface of general spacecraft in a space environment, a model of thermal control material irradiated with microwaves was established, a particle-in-cell (PIC)-Monte Carlo collisions (MCC) simulation was used, and the processes of field emission, multipacting, outgassing, and impact ionization on the surface of thermal control materials were simulated. By comparing the primary electrons, secondary electrons, and impact ionization electrons produced under different field intensities and frequencies of electromagnetic waves, different compositions of outgassing, and different thermal control materials, the influencing factors and critical thresholds of avalanche ionization were obtained. The simulation results show that whether avalanche ionization occurs in outgassing on the surface of the TCL is affected by the electromagnetic wave amplitude, electromagnetic wave frequency, outgassing composition, and the material of the TCL. This provides a theoretical reference for the safe operation of spacecraft.
研究领域:
空间环境工程
·
材料科学
·
电磁学
·
等离子体物理
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Cheng Yang,Anwei Zhou,Yong Lin,Ting Fang,Changqing Qin,Chong Bai,Yushuang Pang,Ming Wu,Weixi Huang,Xiaohui Ma,Yanyan Li,Menglu Wang,Qian Wang,Wenqiang He,Xinghai Ning,Xiaoliang Wang,Desheng Kong
Stretchable electronics offer a promising body-integrated platform for next-generation biomedical devices. However, a significant barrier to their therapeutic efficacy lies in the absence of an efficient transdermal delivery modality. This study presents a stretchable electronic patch equipped with porous microneedles, specifically designed for the wearable treatment of cancer. This electronic patch incorporates an MXene heater that maintains stable temperatures when subjected to tensile deformations. Additionally, a textile dressing component utilizes embedded phase change carriers that enable the on-demand release of anticancer medications through electrothermal activation. The porous microneedles, produced via 3D printing, are engineered to effectively penetrate the epidermis, thereby facilitating successful drug delivery. Complementing these features are a flexible circuit and a compact battery, which together form an untethered wearable system capable of executing remote treatment commands from a smartphone. The combination of chemothermal therapy through electronic control has demonstrated substantial efficacy in inhibiting the growth of subcutaneous tumors. These advancements underscore the substantial potential of stretchable electronics for personalized wearable therapies that permit uninterrupted daily activities.
研究领域:
生物医学工程
·
肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
·
2022
·
IF 1.279
Tao Li,Hongjun Kang,Songtao Lu,Wei Qin,Xiaohong Wu
As space exploration moves further and further into deep space, it is a big challenge to develop antistatic inorganic thermal control coating with lightweight and strong adhesion to substrates. Herein, this work reported an inorganic antistatic AZO/Al 2 O 3 -ZnO-Y 2 O 3 composite coating fabricated by PEO combined with ALD methods. The results show that when the Zn/Al ratio of deposited AZO film is 24:1, its overall performance is the optimal, and the emissivity, absorptivity and resistivity are 0.892, 0.409 and 1.15 × 10 –3 Ω·cm, respectively, which can meet thermal control application requirements of spacecraft. Furthermore, the AZO/Al 2 O 3 -ZnO-Y 2 O 3 composite coating shows a good electron-resistance irradiation performance, which is because AZO conductive film is easy to generate free carriers, speed up some electron transport and make electrons better disperse and conduct, thus reducing the penetration depth of electron irradiation. This work provides a material basis for thermal control system of spacecraft with long life and high reliability.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
Jinpeng Lv,Xiangyu Wen
Passive thermal control coatings (TCC's) have been widely used to tune the thermal equilibrium of spacecraft surfaces since 1970s. Development of new TCC's with improved thermo-physical properties and radiation hardness are essential to the space assets that fly in harsh environments. Herein, we fabricated calcium orthophosphate based inorganic white paint, which possess relative low solar absorptance (α s ) of 0.095 and thermal emittance (ε H ) of 0.88. Noticeably, the Ca 3 (PO 4 ) 2 coating shows excellent space radiation tolerance and thermal control capacity. After performing 90 keV proton irradiation at a fluence of 4×10 15 cm -2 , the α s of ZnO coating increases from 0.160 to 0.213 while the Ca 3 (PO 4 ) 2 coating rises from 0.095 to 0112, which only degrades one third (0.017) of the ZnO coating (0.053). Furthermore, after performing simulated solar irradiation test, the surface temperature of Ca 3 (PO 4 ) 2 paint is 14.4 °C lower than that of ZnO coating, evidencing its prominent thermal-optical performance. Besides, we also found that Ga 2 O 3 based liquid-glass white paint is a good candidate for thermal equilibrium of spacecraft.
研究领域:
材料科学
·
航天工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yifan Liu,Jiazuo Zhou,Yudong Li,Xiaohan Sun,Ziyao Wang,Haiyue Yang,Chengyu Wang
Gels as compelling soft material shows its promising versatility in actuators, soft electronics, and biomedical sensors. However, most gel materials are too rigid to cope with long-term changing scenarios and specific needs. Inspired by the switchable behavior of bio-behavior of muscle, the study reports a thermodynamically controllable and stiffness-transformative cellulose-salt gel by simple thermal mixing of hydrous salt, cellulose nanofiber, and polyacrylamide. The achieved cellulosic gel with dynamic microstructure presents an amazing stiffness switchability between crystalline state and melted states of 32.38 to 0.02 MPa, as well as the regulable light transmittance between 41.59% and 93.43%. In addition, this cellulose-salt gel has excellent thermal controllable behavior. That is, by controlling the crystallization process, the cellulose-salt gel displays the start-stop releasing-energy behaviors on demand. Enabled by these outstanding properties, the study further demonstrates the promising application of cellulose-salt gel in controllable soft-rigid coupling thermoelectric device, showing the broader implications for wearable electronics aiming at on-demand work.
研究领域:
材料科学
·
软体机器人
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
·
2023
·
IF 5.2
Jinpeng Lv,Jiadi Xie,Neshchimenko Vitaly
Implementation of lightweight and long-lasting thermal-control coatings (TCCs) is vital for regulating the surface temperature and energy consumption of spacecraft. Herein, Zn 2 SiO 4 and hexagonal boron nitride (hBN) based inorganic TCCs are developed with potassium silicate binder. The α s /ε H (solar absorptance/ hemispherical emittance) ratio of the Zn 2 SiO 4 , ZnO and hBN coatings are 0.096, 0.190 and 0.107, respectively. Compared to the classical ZnO based Z-93 coating, both Zn 2 SiO 4 /K 2 SiO 3 and hBN/K 2 SiO 3 coatings show superior initial thermophysical properties. After vacuum-proton irradiation, the α s of Zn 2 SiO 4 , Z-93 and hBN coatings increased from 0.091, 0.167 and 0.098 to 0.193, 0.253 and 0.241, respectively. Apparently, the as-developed Zn 2 SiO 4 coating exhibits exceptional heat-dissipation and radiation-resistance features in relation to the hBN and Z-93 TCCs.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）