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
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
ENERGY
·
2014
·
IF 4.159
Wen-long Cheng,Shuai Yuan,Jia-liang Song
PTC (positive temperature coefficient) material is a kind of thermo-sensitive material. In this study, a series of novel PTC materials adapted to thermal control of electron devices are prepared. By adding different low-melting-point blend matrixes into GP (graphite powder)/LDPE (low density polyethylene) composite, the Curie temperatures are adjusted to 9 °C, 25 °C, 34 °C and 41 °C, and the resistance–temperature coefficients are enhanced to 1.57/°C–2.15/°C. These PTC materials remain solid in the temperature region of PTC effect, which makes it possible to be used as heating element to achieve adaptive temperature control. In addition, the adaptive thermal control performances of this kind of materials are investigated both experimentally and theoretically. The result shows that the adaptive effect becomes more significant while the resistance–temperature coefficient increases. A critical heating power defined as the initial heating power which makes the equilibrium temperature reach terminal temperature is presented. The adaptive temperature control will be effective only if the initial power is below this value. The critical heating power is determined by the Curie temperature and resistance–temperature coefficient of PTC materials, and a higher Curie temperature or resistance–temperature coefficient will lead to a larger critical heating power.
研究领域:
材料科学
·
热力学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 14
·1604620
·
IF 12.124
Tingjie Yin,Jiyong Liu,Zekai Zhao,Yuanyuan Zhao,Lihui Dong,Meng Yang,Jianping Zhou,Meirong Huo
Nanocarriers capable of circumventing various biological barriers between the site of administration and the therapeutic target hold great potential for cancer treatment. Herein, a redox-sensitive, hyaluronic acid-decorated graphene oxide nanosheet (HSG) is developed for tumor cytoplasm-specific rapid delivery using near-infrared (NIR) irradiation controlled endo/lysosome disruption and redox-triggered cytoplasmic drug release. Hyaluronic acid (HA) modification through redox-sensitive linkages permits HSG a range of advantages over the standard graphene oxide, including high biological stability, enhanced drug-loading capacity for aromatic molecules, HA receptor-mediated active tumor targeting, greater NIR absorption and thermal energy translation, and a sharp redox-dependent response for accelerated cargo release. Results of in vivo and in vitro testing indicate a high loading of doxorubicin (DOX) onto HSG. Selective delivery to HA-receptor overexpressing tumors is achieved through passive and active targeting with minimized unfavorable interactions with blood components. Cytoplasm-specific DOX delivery is then achieved through NIR controlled endo/lysosome disruption along with redox-triggered release of DOX in glutathione rich areas. HSG's specificity is resulted in enhanced cytotoxicity of chemotherapeutics with minimal collateral damage to healthy tissues in a xenograft animal tumor model. HSG is validated the programmed delivery of therapeutic agents in a spatiotemporally controlled manner to overcome multiple biological barriers results in specific and enhanced cancer treatment.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 34
·e54311
·
IF 3
Aimei Yu,Ying Xi,Weigang Xu,Ao Wang,Lin Liu,Lin Zhang
In this study, three kinds of newly flexible positive temperature coefficient (PTC) materials are fabricated by a simple preparation method. Due to introducing the hybrid filler of carbon nanotube and carbon black, these materials exhibit remarkable PTC effect including the PTC intensity of more than four-orders magnitude and the resistivity-temperature coefficient of 154%/°C. The Curie points of PTC materials are regulated to room-temperature range by the low melting phase and influenced by melting onset temperatures of their solid–liquid phase change. With the help of transmission electron microscope, the micro-capsule structure of the phase change regions is observed, and the hybrid conductive fillers randomly distribute in the blend matrix to construct three-dimensional conductive network. Using the PTC materials as a heating element, the equilibrium temperature of the controlled device can be maintained around their Curie point without any control method. Moreover, the adaptive thermal control effect becomes more obvious with the increase of ambient temperature and initial heating power. Furthermore, the thermal control accuracy fluctuates within 0.15°C without any external control method, and is improved to round 0.08°C in combination with the switch control method. This study provides a new method for the thermal control of electronic devices in the requirement of lightweight and miniaturization at low temperature environment.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2022
·Vol. 79
·期 3
·969-979
·
IF 4.462
Linhuai Li,Jun Cen,Lingling Huang,Ling Luo,Guangqi Jiang
BACKGROUND The development of stimulus-responsive and photothermally controlled-release microcapsule pesticide delivery systems is a promising solution to enhance the effective utilization and minimize the excessive use of pesticides in agriculture. RESULTS In this study, an AVM@CS@TA-Fe microcapsule pesticide delivery system was developed using avermectin as the model drug, chitosan and tannic acid as the wall materials, and tannic acid–Fe complex layer as the photothermal agent. The optical microscope, scanning electron microscope, transmission electron microscope, and Fourier-transform infrared spectroscope were used to characterize the prepared microcapsule. The slow-release, UV-shielding, photothermal performance, and nematicidal activity of the microcapsule were systematically investigated. The results showed that the system exhibited excellent pH-responsive and photothermal-sensitive performances. In addition, the UV-shielding performance of the delivery system was improved. The photothermal conversion efficiency ( η ) of the system under the irradiation of near-infrared (NIR) light was determined to be 14.18%. Moreover, the nematicidal activities of the system against pine wood nematode and Aphelenchoides besseyi were greatly increased under the irradiation of light-emitting diode (LED) simulated sunlight. CONCLUSION The release of the pesticide-active substances in such a pesticide delivery system could be effectively regulated with the irradiation of NIR light or LED-simulated sunlight. Thus, the developed pesticide delivery system may have broad application prospects in modern agriculture fields. © 2022 Society of Chemical Industry.
研究领域:
农业科学
·
材料科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Technological Sciences
·
2021
·Vol. 64
·期 7
·1447-1458
·
IF 3.572
Yu AiMei,Li Qiang
Conductive polymer composites (CPCs) as the thermo-sensitive materials have attracted much attention in thermal control field due to their reliable self-regulating behaviors, high efficiency and mechanical flexibility. However, the development of these materials needs to manage the normal conflicting requirements, such as effective heating performance and good self-regulating capability. This paper presents a series of novel CPCs material having different amounts of hybrid fillers of multi-walled carbon nanotubes (CNTs) and carbon black (CB). The positive temperature coefficient intensity is enhanced to 10 5.2 , and the room-temperature resistivity is optimized to 320 Ω cm. Besides, the Curie temperatures are regulated to room-temperature range by incorporating the low-melting-point blend matrix into the poly(ethylene-co-vinyl acetate)/CNTs/CB composite. The thermal-control experiment demonstrates that CPCs-heating elements can adjust the equilibrium temperature of controlled equipment near their Curie temperatures without any control methods. Compared with the ordinary resistor, the CPCs materials have the remarkable adaptive thermal control behavior. Furthermore, the temperature control capability is particularly prominent in the changing environment temperature. The CPCs as a safe and reliable adaptive heating element is potential to replace the conventional active thermal control means.
研究领域:
材料科学
·
热控制工程
✓ 已验证
DOI
高影响因子
Regenerative Biomaterials
·
2025
·
IF 8.1
Zhang Ting,Yu Yameng,Yuan Wei,Ren Zeqi,Cheng Yan,Wu Shuilin,Zheng Yufeng,Xia Dandan
Biodegradable Zn alloy have recently gained considerable attention for use in bone implants considering their biodegradability, attractive mechanical properties, and bioactivity. However, excessive corrosion of Zn alloy at the early stage of implantation may cause severe cytotoxicity, resulting in insufficient osseointegration, which hinders the clinical use of the Zn alloy. In this study, we designed a photothermal-controlled degradative hybrid coating as corrosion-protective barrier with the intention of preventing Zn ion burst release during the early stages of implantation and regaining the alloy's corrosion advantage later on. The coating consisting of Zeolite imidazole skeleton-encapsulated indocyanine green core-shell structured nanoparticles and polylactic coglycolic acid (ICG@ZIF-8/PLGA) on pristine Zn-0.8 (wt.%) Li (ZL) alloy. The electrochemical test results indicated that coating ZL with ICG@ZIF-8/PLGA might effectively reduce its corrosion current density (icorr) from 2.48 × 1 0 −5 A•cm−2 to 2.10 × 1 0 −8 A•cm−2. After near-infrared light irradiation, ICG@ZIF-8 heated PLGA coating to reach Tg, so that the coating was degrading, and the icorr of coated ZL alloy decreased to 2.50 × 1 0 −7 A•cm−2, thus restoring corrosion advantage. Both in vitro and in vivo investigations showed that coated ZL alloy had acceptable biocompatibility. Overall, the development of the photothermally controlled coating improved the Zn alloy's resistance to corrosion and allowed for the adjustment of the coated ZL alloy's rate of degradation through the use of 808 nm NIR laser irradiation.
研究领域:
生物医学工程
·
材料科学
·
生物材料
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Yu Yang,Miao Jiang,Zhuang Ma,Alexandr A. Rogachev,Weizhi Tian,Xin Gao,Baowen Xu,Lihong Gao
Carbon fiber epoxy resin (CFRP) is gradually used as the space satellite antenna material, thermal control coatings (TCCs) are prepared on the surface to ensure the stable operation. However, the traditional TCCs have no wave transmission capability. The hollow glass microspheres (HGMs) were used to prepare the coating in our work, and ZrO 2 was coated on its surface (Zr-HGM) to improve the solar reflectivity. The Zr-HGM powders were obtained by a homogeneous precipitation method with an appropriate reaction time of 4 h. By investigating the optical and dielectric properties, we found that the solar absorption of the coating with Zr-HGM was reduced by half compared to the coating with the original HGM. The microwave transmittances were all above 96.5% from 2 to 18 GHz. Our findings have proposed a preparation method for a new CFRP-based TCC, which will ensure the stable operation of the satellite antenna.
研究领域:
材料科学
·
航空航天工程
·
电磁材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Leipeng Zhang,Tingting Hao,Shanshan Song,Bo Wang,Dongqi Liu,Zichen Ren,Wenchao Liu,Yike Zhang,Gaoping Xu,Xiangqiao Yan,Yuan Lu,Yao Li
Infrared electrochromic device based on polyaniline (PANI) possesses the ability to regulate infrared radiation, which has a great application prospect in the field of satellite intelligent thermal control. However, it is still challenging to efficiently fabricate uniform and dense PANI functional layer with excellent infrared electrochromic properties. Here, we demonstrate the use of polymer additive to promote deposition of PANI with smooth and dense morphology by inducing uniform electrochemical deposition rate on the electrode surface and inhibiting the growth of PANI in three-dimensional direction through adsorption mechanism. By adding a low concentration of poly(styrene sulfonate) (PSS) to the electrodeposition solution, the PANI film with uniform and compact micromorphology was prepared with excellent infrared electrochromic property, which can realize the modulation of emittance more than 0.4 and 0.45 in the range of 8 ∼ 14 μm and 2.5 ∼ 25 μm, respectively. Furthermore, the infrared electrochromic device that employ the optimized PANI functional film and adsorbing ionic liquid porous gel electrolyte was constructed. Through high and low temperature cycle test (1000 cycles) and vacuum environment test, the device exhibits wonderful durability and can achieve large emissivity modulation in the wavelength range of 2.5 μm ∼ 25 μm (Δε = 0.38). Meanwhile, the transient thermal analysis of the heat dissipating plate attached with the infrared electrochromic device exhibits that the device has an excellent potential for the purposes of efficient thermal management of the satellite.
研究领域:
材料科学
·
电化学
·
卫星技术
·
热管理
✓ 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）