CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qi Liu,Pei-Lin Wang,Wei Zhang,Tian Mai,Meng-Yu Qi,Lei Chen,Junfeng Li,Ming-Guo Ma
In the era of increasing reliance on electronic devices, the development of flexible smart composite films that offer multifunctional capabilities such as electromagnetic shielding, sensing, infrared stealth, and autonomous heating is becoming increasingly significant. In this study, we fabricated polydopamine-modified cellulose scaffold/MXene composite films (PCM) using a densification strategy, resulting in films with a thickness of only 33 μm, outstanding tensile strength of 235.28 MPa, and excellent electromagnetic shielding effectiveness of 44.6 dB. The PCM also demonstrates remarkable electrothermal performance, reaching temperatures of up to 610 °C at 5 V, and exhibits excellent photo-thermal conversion performance, along with good cycling stability and tunability. Additionally, the PCM’s low infrared emissivity provides it with exceptional infrared stealth capabilities, effectively concealing a high surface temperature ranging from 250 °C to 25 °C. The PCM’s ability to detect human body movement and light-driven actuation for bionic motions underscores its flexibility and utility as a sensor. Therefore, this efficient and versatile approach provides a promising method for synthesizing multifunctional MXene-based composite films, achieving satisfactory mechanical properties, high electromagnetic interference shielding, and effective thermal management for wearable smart devices and military applications.
研究领域:
材料科学
·
智能设备
·
多功能材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Rui Xu,Xiaomeng Xia,Wei Wang,Dan Yu
With the rapid development of infrared detection technology and infrared precision guidance of weapons, infrared camouflage has important meanings. Paraffin, a kind of phase change material (PCM) is used as the core material of microcapsules and urea-formaldehyde resin as a shell material to prepare phase change microcapsules (MPCMs) by in-situ polymerization, and then coated on the fabric to get infrared camouflage fabric. Ultrasound cell pulverizer is used for phacoemulsification with short emulsification time to obtain uniform and stable emulsion. The as-prepared fabric was characterized by scanning electron microscopy (SEM), infrared thermal imaging test, thermogravimetric analysis (TG), differential scanning calorimetry (DSC), and temperature change test. The encapsulation ratio of the MPCMs was calculated to be 60.1 %. The average particle size of the MPCMs was 425.7 nm. Compared to unfinished fabrics, infrared camouflage fabrics can reduce temperatures by 5–10 ℃ and so is the infrared emissivity. The results showed that the prepared fabric had a certain degree of infrared camouflage ability since the ability to adjust with temperature changes is significant and infrared heat radiation can be effectively reduced. Based on these effects we believe this study can offer a promising strategy for the preparation of infrared camouflage fabrics both on laboratory and industrial scales.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Dinghan Wang,Tao Zhang,Xun Zhang,Yixiang Chen,Dan Yu,Wei Wang
With the development of infrared detection technology, to protect the exposure targets are more difficult than before. And traditional camouflage protection technologies have mainly focused on infrared stealth materials in fixed conditions by the adjustment of surface infrared emissivity or thermal insulation. However, with the increasing temperature of from engine, the risk of exposure possibility will greatly rise due to the change of emissivity and thermal insulation effect in reality. Hence, the development of intelligent infrared stealth materials that can respond to the temperature is an important tool for solving these problems. Here, we designed an infrared stealth fabric with macroscopic temperature-indicating adjustable emissivity, in which polyester fabric (PET) was used as the substrate, which was firstly modified with dopamine，3-thiolpropyltrimethoxysilane (KH-590) and N-isopropylacrylamide (NIPAAM)，by clicking on chemistry to obtain the temperature-responsive effect of the fabric material, and coated with vanadium dioxide (VO 2 ) powders in waterborne polyurethane (WPU). Importantly, the emissivity of the VO 2 coating layer will decrease with the increase of temperature from 0.95 to 0.68. Meantime, the fabric will shrink with the rising temperature, successfully forming a heat-insulating air layer between the composites and the target, thus further enhancing the IR stealth performance with the air layer thermal insulation. As we expected, when heated to 50 ℃, the surface temperature of the resulting fabric remains about 30 ℃. Therefore, this research on temperature response intelligent fabric based on the combined action of low infrared emissivity and heat isolation offers novel insights for high infrared stealth materials’ fabrication.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·5651-5660
·
IF 9.5
Dong Jingyu,Li Zhaoyang,Liu Congqi,Zhou Bing,Liu Chuntai,Feng Yuezhan
Controlling the orientation of two-dimensional MXene within layered films is essential to optimize or tune their mechanical properties and electromagnetic interference shielding (EMI) performance, but achieving the high orientation MXene layers on an industrial scale remains a challenging goal. In this paper, a scalable layer-by-layer blade coating (LbLBC) method was employed to fabricate highly oriented MXene/polyvinyl alcohol (PVA) films. During the LbLBC process, MXene/PVA colloid suffered a strong shearing effect, which induced the ordered alignment of MXene nanosheets along the direction of the blade movement. The orientation of MXene can be effectively adjusted by changing the scraping gap of LbLBC, achieving a maximum Herman orientation factor f of 0.81. As a result, the mechanical properties and EMI performance of the as-prepared MXene/PVA films are in direct proportion to their orientation, with the optimal values of tensile strength of 145.5 MPa, fracture strain of 19.6%, toughness of 17.7 MJ·m −3 , and EMI shielding effectiveness of 36.7 dB. Furthermore, the inherently low mid-infrared (mid-IR) emissivity of MXene, combined with the densely oriented structure affords the composite films with IR stealth, resulting in a substantial decrease from 150 to 66.1 °C in the radiative temperature of a surface. Conclusively, these scalable MXene/PVA films exhibit remarkable potential for integration into the next generation of multifunctional protective camouflage materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Nano-Micro Letters
·
2021
·Vol. 14
·期 1
·1-12
·
IF 16.419
Zhu Mengya,Li Guangyong,Gong Wenbin,Yan Lifeng,Zhang Xuetong
A calcium-doped boron nitride (Ca-BN) aerogel was synthesized by introducing Ca into crystal structure of BN building blocks.
The aerogels exhibited superior high-temperature stability and could resist the burning of butane flame (~1300 °C) in air atmosphere.
Ca-BN aerogel, together with Al foil, can effectively hide thermal target at high temperature up to 1300 °C.
研究领域:
材料科学
·
热学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Chang Liu,Kaidi Mao,Hang Teng,Rui Zhang,Haibin Sun,Qiangqiang Hu,Cuncheng Li,Hongyu Gong,Paolo Colombo,Xue Guo,Yurun Feng
This study demonstrates the electromagnetic simulation-guided additive manufacturing of SiCN ceramics with a gyroid architecture for enhanced microwave absorption. Rare earth (Ce, Pr) doping enables the precipitation of polarization-active SiC/C phases after low-temperature pyrolysis (900°C), synergistically optimizing impedance matching and electromagnetic energy dissipation. The optimized ceramics exhibit exceptional performance: GS-Ce900 achieves full X-band coverage at 3.86–4.07 mm thickness, while GS-Pr900 delivers a minimum reflection loss of −30.99 dB at 2.73 mm. Furthermore, under 60 s of electromagnetic irradiation, GS-Pr900 demonstrates an 84.3°C temperature decrease via thermoelectric conversion, showcasing strong infrared stealth potential.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2022
·
IF 19.967
Zhimin An,Yiping Li,Xiaoguang Luo,Yixing Huang,Rubing Zhang,Daining Fang
A multifunctional stealth technology compatible with infrared and radar is one of the most feasible ways to improve the survival of military equipment under high-temperature conditions. However, it is difficult to effectively integrate multiple functions into one material owing to the contradictory stealth mechanisms of infrared and radar. Herein, the near-room-temperature integrated preparation of a hierarchical metastructure with high-temperature resistance, broadband microwave absorption, and infrared stealth is realized by combining topological optimization of metastructure and a papermaking method. The tailored metastructure exhibits an effective bandwidth and absorption peak of 3.1 GHz and −25.9 dB at 1,000°C. The excellent thermal insulation allows the metastructure to achieve infrared stealth, which can reduce the radiation temperature of an object from 1,200°C to 340°C. The new technology paves the way for the design and preparation of a radar-infrared bi-stealth metastructure applied to high temperature.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
Materials
·
2024
·Vol. 18
·期 1
·113
·
IF 3.1
Yifan Fei,Junya Yao,Wei Cheng,Wenling Jiao
Microwave absorbers with infrared camouflage are highly desirable in military fields. Self-supporting 3D architectures with tailorable shapes, composed of FeCoNi alloy/carbon nanotubes (CNTs) @ carbon nanofibers (CNFs), were fabricated in this study. On the one hand, multiple loss mechanisms were introduced into the high-elastic sponges. Controllable space conductive networks caused by the in situ growth of CNTs on the CNFs contributed to the effective dielectric and resistance loss. Moreover, the uniformly distributed magnetic alloy nanoparticles (NPs) with dense magnetic coupling resulted in magnetic loss. On the other hand, heterogeneous interfaces were constructed by multicomponent engineering, causing interfacial polarization and polarization loss. Furthermore, the internal structures of sponges were optimized by regulating the alloy NPs sizes and the growth state of CNTs, then tuning the impedance matching and microwave absorption. Therefore, the high-elastic sponges with ultra-low density (7.6 mg·cm−3) were found to have excellent radar and infrared-compatible stealth properties, displaying a minimum refection loss (RLmin) of −50.5 dB and a maximum effective absorption bandwidth (EABmax) of 5.36 GHz. Moreover, the radar stealth effect of the sponges was evaluated by radar cross-section (RCS) simulation, revealing that the multifunctional sponges have a promising prospect in military applications.
研究领域:
材料科学
·
电磁学
·
军事应用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 5
·1-9
·
IF 23.2
Shen Yong,Li Guojie,Cheng Yajie,Li Yahong,Alhadhrami A.,Fallatah Ahmed M.,Alshammari Dalal A.,Zhou Bing,Feng Yuezhan,Liu Chuntai
Developing a multifunctional protection material compatible with infrared (IR) stealth and electromagnetic interference (EMI) shielding is urgently required but challenging to ensure special human safety and maintain the smooth operation of electronic equipment. Herein, it is designed and fabricated a double-layered ANF/MXene film containing a thermally insulated aramid nanofiber (ANF) aerogel and low emissivity MXene coating with integrated long-term thermal camouflage at elevated temperatures and highly efficient EMI shielding capability. In this system, the lower aerogel film can act as a barrier to insulate heat transfer through its novel skin–core structure under ultralow directional thermal conduction, while the upper Ti 3 C 2 T x MXene coating can provide a very low emissivity surface and highly conductive network. Owing to its unique double-layer structure, the ANF/MXene film demonstrates a significant EMI shielding effectiveness of 43.6 dB and a remarkably low emissivity of 0.24, delivering excellent IR stealth performance across various ambient temperatures. This research lays the foundation for the creation of versatile protective materials that have great potential for use in both military and civilian contexts.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Yanyan Wang,Nan Pang,Xiaoqing Yin,Meijie Yu,Chengguo Wang,Chuanjian Zhou
Phase change materials (PCMs) and thermal insulation materials have garnered significant attention in infrared stealth applications due to their excellent temperature regulation capabilities. However, traditional PCMs often face leakage issues or are unable to balance porous structure retention. In this work, a composite aerogel with dual solid skeletons is designed via homogeneous mixing. The composite aerogel not only features the nanoporous structure and thermal insulation properties but also possesses solid–solid phase transition capability without PCM leakage. Compared to pure polyimide (PI) aerogels, the composite aerogel exhibits lower thermal conductivity due to its lower density and more intricate pore structure. The composite aerogel retains a maximum phase transition enthalpy of 111 J g −1 and can significantly slow surface temperature rise under high-temperature conditions. In addition, the composite aerogels exhibit excellent cyclic stability and long-term durability, further demonstrating their potential for applications in complex infrared stealth scenarios. When the composite aerogel is used to cover a graphite sheet at 136 °C, the surface infrared radiation temperature is reduced to only 25.5 °C, demonstrating excellent infrared stealth performance. This study provides new insights for designing high-efficiency infrared stealth materials with flexible temperature regulation capabilities.
研究领域:
材料科学
·
热能工程
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-16
·
IF 23.655
Cheng Haoran,Pan Yamin,Wang Xin,Liu Chuntai,Shen Changyu,Schubert Dirk W.,Guo Zhanhu,Liu Xianhu
Ni-MXene/MF foam is synthesized via an electrostatic assembly and dip-coating process.
The “micro-capacitor” structure of Ni/MXene and the 3D porous structure of MF endow the foam excellent impedance matching and wave absorption performance.
The excellent heat insulation, infrared stealth, and flame-retardant performances are achieved.
研究领域:
材料科学
·
电磁学
·
热力学
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Xinbei Zhu,Jingkai Liu,Liyue Zhang,Weiwei Zhao,Yiyu Cao,Xiaoqing Liu
Solar thermal collectors based on phase change materials (PCMs) are important to promote the civilian use of sustainable energy. However, simultaneously achieving high photothermal efficiency and rapid heat transfer of the PCM carrier typically involves a high proportion of functional materials, contradicting a satisfying energy storage density. In this work, a surface-engineered anisotropic MXene-based aerogel (LMXA) integrated with myristic acid (MA) to produce phase change composites (LMXA-MA) is reported, in which the laser-treated surface composed of the hierarchically-structured TiO 2 /carbon composites act as a light absorber to improve solar absorption (96.0%), while the vertical through-hole structure allows for fast thermal energy transportation from surface to the whole. As a result, LMXA-MA exhibits outstanding thermal energy storage (192.4 J·g −1 ) and high photothermal conversion efficiency (93.5%). Meanwhile, benefiting from the intrinsic low emissivity of MXene material, thermal radiation loss can be effectively suppressed by simply flipping LMXA-MA, enabling a long-term temperature control ability (605 s·g −1 ). The excellent heat storage property and switchable dual-mode also endow it with an infrared stealth function, which maintains camouflage for more than 240 s. This work provides a prospective solution for optimizing photothermal conversion efficiency and long-term thermal energy preservation from surface engineering and structural design.
研究领域:
材料科学
·
能源工程
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）