POLYMER ENGINEERING AND SCIENCE
·
2018
·
IF 1.551
Yanbin Wang,Teng Wang,Tingmu Wang,Jinyi Zhang,Jinxing Chen,Rui Yang,Linxiao Ruan,Biaobing Wang
Recently, multifunctional films are of particular interest to scientists owing to their diversified properties. Here, we demonstrated that self-cleaning, self-extinguishing, and high conductive films were fabricated by simple solvent-casting method from poly(amide-imide)/polyaniline composites. The multifunctional films exhibited controllable water contact angles varying from 65° to 120° and high electrical conductivities of over 40 S m −1 . Moreover, due to the improved hydrophobicity, the multifunctional films showed self-cleaning characteristics and were used to collect the dust powders easily and perfectly during the dispensed water droplet rolling off the solid surface. Furthermore, the self-extinguishing property of the multifunctional films was confirmed by thermogravimetric analysis. The special film composition and morphology are the two important aspects that induce such unusual properties. The polyaniline content can strongly influence the morphology of the composite films, which in turn display different hydrophobicities and conductivities. POLYM. ENG. SCI., 59:E33–E43, 2019. © 2018 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Shixian Xiong,Yue Yang,Sizhao Zhang,Yunyun Xiao,Hui Ji,Zhouyuan Yang,Feng Ding
Phenolic-based aerogel composites possess particular characteristics, such as low thermal conductivity, light weight, and superior ablative properties, in near-space vehicles. However, their machinability and flammability require further improvement, hampering their application for high-performance thermal protection systems in the aerospace field. Here, we prepare nanoporous polybenzoxazine (PBO) aerogels with outstanding thermally insulating and self-extinguishing properties by an effective-cost ambient pressure drying (APD) approach rather than a conventional high-pressure supercritical drying pattern. The PBO aerogels are prepared by adopting different exchange solvents of tert-butyl alcohol, ethanol, and n-hexane. The results obtained indicate that PBO aerogels (with n-hexane as the exchange solvent) by APD have an optimal three-dimensional nanoporous network structure, a pore size distribution in the range 20–140 nm, an obvious self-extinguishing property (extinguished itself instantly despite exposure to a 1200 °C flame), superior thermal insulation (the cold surface temperature of the sample reached only 36.4 °C after 400 s despite its opposite surface existing at a 65.8 °C atmosphere), and excellent machinable properties (easy-to-form special-shaped sample). PBO aerogels are a great potential candidate material system for thermal protection systems in aerospace applications in the future.
研究领域:
材料科学
·
航天工程
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Xin Li,Zhendong Huang,Ruiyang Dou,Qiang Liu,Wei Huang,Chunxia Zhao,Jianguo Deng,Hongbing Chen
Aerogels hold great promise for various applications. However, conventional aerogels exhibit low hydrophobicity, making them prone to moisture absorption in humid environments, which adversely affects their thermal insulation and mechanical performance. In this study, we introduce an innovative approach to solve this problem by utilizing polycarbonate waste as raw materials to fabricate waterproof aerogels towards external thermal insulation. The incorporation of DOPO-MMT not only accelerates gelation and enhances mechanical strength but also imparts self-extinguishing behavior during combustion. The obtained aerogel possesses a super high static contact angle exceeding 160°, which enables the aerogel to maintain a stable thermal conductivity of 0.039 W m⁻¹ K⁻¹ even after a 7-day immersion in water. Notably, the aerogel retains its hydrophobicity under harsh conditions, including exposure to strong acids and bases. This approach of using waste materials to manufacture aerogels demonstrates the potential of recycled materials in the development of high-performance materials, offering a new technological pathway to address plastic pollution and enhance industrial energy efficiency. This method provides promising application prospects for future insulation materials, particularly suitable for fields such as construction, aerospace, and automotive industries, where high demands are placed on waterproofing, flame retardancy, and mechanical performance.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Wood Material Science & Engineering
·
2023
·
IF 2.2
Gang Zhu,Hui Li,Shuduan Deng,Chaoling Zhang,Kaiqian Li,Xupeng Zhang
In this work, a novel Cu–UiO-66/wood composite was successfully fabricated by a facile in situ growth strategy, and the influence of Cu–UiO-66 metal-organic framework (MOF) loading on the wood substrate thermal stability and flame retardancy were investigated. Scanning electron microscopy images indicated that the octahedral Cu–UiO-66 microparticles were uniformly and firmly decorated on the lumen surface within the balsa wood scaffold. The incorporation of only 6.5 wt% Cu–UiO-66 MOF remarkably enhanced the thermal stability and flame retardancy of the natural wood. Compared with the untreated wood, the peak heat release rate of the Cu–UiO-66/wood composite exhibited a drastic decline by 73.1% from 94.5 to 25.4 W·g−1 and the total heat release from 7.7 to 5 kJ·g−1. Meanwhile, the treated wood had a strong self-extinguishing ability and the char residue rate of the Cu–UiO-66/wood is significantly increased by 132.7%. Therefore, this work provided an effective means of achieving the fire safety wood via introducing and constructing Cu–UiO-66 MOF flame retardants material.
研究领域:
材料科学
·
防火工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Qinan Hou,Yunhui Chen,Jiefei Wang,Meiqin Wu,Hou-Yong Yu,Xiaohua Wang
Polyamide 66 (PA66), a globally attractive high-performance plastic, is hindered by its poor fire resistance, which triggers excessive smoke and dripping. In this work, we introduce a novel halogen-free, thermal insulating flame-retardant for PA66, modified by cellulose nanocrystals (CNCs) with 3-aminopropyltriethoxysilane (APTES) and phosphoric acid (PA) to form a spider web-like nano composite CNC/A/P, by improving the thermal stability and inhibiting the droplet phenomenon of PA66. This high self-extinguishing flame retardant owns a 56.9 % residual carbon rate and the limiting oxygen index of 42.74 %. PA66-C15, incorporating 15 wt% CNC/A/P, significantly enhances PA66's flame retardancy, achieving a V-0 rating, and a rising LOI of 46.7 % from 21.6 %. Surprisingly, a 114.3 % temperature reduction (194.1 °C) under heating alcohol lamp were also observed in this PA66 composite, preserving superior tensile strength mechanical properties and thermal insulation. This study presents a promising, high-performance CNC-based flame-retardant material with excellent fire retardancy and mechanical properties.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Zhijun Zhou,Qingbao Guan,Shuopu Zhong,Qi Wang,Yiyan Xu,Zheng Cao,Hongli Xu
The development of intrinsic flame retardant triboelectric nanogenerators (TENGs) employed at extremely high temperatures and directly in contact with flames attracts researchers’ attention but is tough to achieve. In this work, we develop a fire-resistant and self-extinguishing TENG (FRTENG) that can be used as a power generator in extreme application scenarios, for example, firefighting, personal protection, or applying in extreme high-temperature conditions. The FRTENG profits by the extraordinary thermal characteristics of liquid-crystalline polyarylate copolymerized with poly(ethylene terephthalate), whose flame retardancy, antidripping, and triboelectric properties have been significantly enhanced. This FRTENG is fire-resistant and antidripping after 15 s of trying, while the traditional triboelectric materials were totally burned by flames under the same circumstances. Our FRTENG can maintain over 53% of original electrical output performance even after 15 s of combustion (∼500 °C) while providing excellent flame retardancy missing in the existing TENGs. It is believed that the fire-retardant and self-extinguishing FRTENG will be a path-breaking device for lifesaving wearable applications.
研究领域:
材料科学
·
能源技术
·
消防安全
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Xiaobin Chen,Sili Qiu,Zhenhua Jian,Yan Hu,Dazhu Chen,Zhouguang Lu,Chen Liu
The thermal runaway issue of polymer electrolytes (solid polymer electrolytes (SPEs)) at high temperatures, particularly the irreconcilable contradiction between thermal safety and electrochemical performance, remains a great challenge for SPEs that can be applied to solid-state lithium batteries. Here, an intelligent self-extinguishing system originating from the core–shell structure of microcapsules is designed to snuff out the possibility of thermal runaway and provides a high-performance solid-state Li metal battery. The polymer shell of the microcapsules not only serves as a barrier to eliminate detrimental interactions of the flame retardant with the electrolyte or the active lithium metal anode but also acts as a thermoresponsive agent to release the flame retardant. The ion hopping points on the shell of the microcapsules further contribute to the ion conducting nature of the SPE, boosting the ionic conductivity to be 9.3 × 10–4 S cm–1. Significantly, the Li//Li symmetric cells exhibit stable long-term cycling for over 3400 h, and the solid-state Li metal battery shows a capacity retention of 87.4% after 500 cycles. Meanwhile, the SPE displays superior flame retardancy with a self-expansion time of 3 s g–1. This work offers a versatile strategy for designing truly safe and high-performance solid-state Li–metal batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Longfei Han,Mengdan Zhang,Yukun Cao,Xinru Zhang,Can Liao,Liying Cheng,Qiang Gu,Yongchun Kan,Jixin Zhu,Yuan Hu
Lithium (Li) metal batteries have garnered significant attention due to their high energy density. However, the safety concerns associated with Li-metal batteries need to be addressed for their commercial viability. Most research has focused on the safety of separators and electrolytes, yet little emphasis is placed on the heat safety of lithium metal. In an out-of-control scenario, the combustion of lithium metal can release significantly more heat compared to other components. In this study, a highly safe composite Li metal anode is introduced fabricated by repeatedly rolling copper (Cu) powder and lithium metal. Electrochemical tests show that the Cu/Li anode can withstand up to 200 cycles, far surpassing the 50-cycle lifespan of conventional Li metal anodes. Safety test results indicate that the Li/Cu composite anode possesses self-extinguishing properties, significantly mitigating the safety risks associated with lithium metal batteries. Thermal runaway tests on the 1.0 Ah pouch cell demonstrate that the Li/Cu composite anode exhibits excellent safety characteristics, effectively inhibiting thermal runaway phenomena. The proposed straightforward, and high-safety Li/Cu composite anode can enhance the safety profile of lithium metal batteries and provide crucial technical support for their industrial application.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2019
·
IF 6.282
Yubin Huang,Saihua Jiang,Runcan Liang,Zhiwei Liao,Gexin You
Nowadays, halogen-free high flame retardance of rigid polyurethane (RPU) foam without deteriorating its intrinsic performances is still a great challenge. Here, a green surface flame-retardant (SFR) strategy of RPU foam was proposed. In detail, a new halogen-free UV-curable self-extinguished coating was developed and then combined onto the surface of RPU, obtaining a surface flame-retardant RPU foam system (SFR-RPU). The SFR-RPU foams exhibit highly-efficient flame retardancy at a coating thickness of 25 µm, showing a fast self-extinguishing behavior. A compact porous char layer served as a good barrier can be rapidly formed on the surface of SFR-RPU. The detailed flame-retardant mechanism was proposed. Furthermore, when compared to neat RPU, the compressive strength of SFR-RPU foams is enhanced and the heat-insulation property is maintained perfectly. This facile, low-cost and environmental-friendly post-treatment of RPU foam could expand its fire safe commercial applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Pan-Pan Zhao,Cong Deng,Ze-Yong Zhao,Xing-Yu Li,Hong Chen,Yu-Zhong Wang
More than 40% of the energy generated globally is consumed by residential and commercial buildings, so energy efficient materials for buildings are urgently needed at present. On-demand thermal energy storage/release using phase change materials (PCMs) can improve thermal energy utilization efficiency, however, they are facing low adaptability to temperature and easy flammability in the case of fulfilling high thermal management capacity. Herein, we report octadecylamine-based PCMs with tailor-made molecular firefighting and thermal energy management capability. These synthesized octadecylamine-based Schiff base-containing PCMs (SB-PCMs) may self-extinguish while encountering short-time fire and possess variable phase transition temperatures of 33, 42, 92, and 101 °C. Meanwhile, these SB-PCMs own high phase transition enthalpies of 161.4–183.4 J g −1 and excellent cyclic stability. When SB-PCMs as thermal energy management materials in wood plastic-based building materials, they show high adaptability to ambient temperature and excellent thermal management capability, achieving temperature regulation of 9.0 °C. Meanwhile, fire safety of the composite wood plastic materials is significantly improved. Detailed analysis confirms that the incorporated benzaldehyde with various positional substituted hydroxyl may induce noncovalent interactions (mainly hydrogen bond and π-π stacking) of SB-PCMs and further control their self-assembling processes, thus achieving multiple thermal responses of SB-PCMs; self-crosslinking charring of benzaldehyde-based Schiff base structure may retard fire spreading, therefore presenting molecular firefighting. Additional multistage thermochromic behaviors of SB-PCMs may extend their application in temperature-sensitive paint, intelligent fabric, etc. This work firstly represents a method for manipulating the multistage thermal and fire responses of PCM in the case of fulfilling high thermal energy management capacity and confirms its molecular-firefighting and energy efficient application in building materials.
研究领域:
材料科学
·
能源工程
·
消防安全
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Lei Liu,Zhewen Ma,Menghe Zhu,Lina Liu,Jinfeng Dai,Yongqian Shi,Jiefeng Gao,Toan Dinh,Thanh Nguyen,Long-Cheng Tang,Pingan Song
Multifunctional intelligent fire-safe cotton fabric promises next-generation fire-fighting uniform and sensor applications. However, cotton fabrics' hygroscopicity and intrinsic flammability significantly impede their potential applications in industries. Herein, we report a superhydrophobic fireproof cotton fabric (PEI-APP-PEI-MXene) generated via sequential layer-by-layer deposition of polyethyleneimine (PEI), ammonium polyphosphate (APP), and titanium carbide (MXene), followed by hydrophobic treatment with silicone elastomer. Compared to untreated cotton, the treated cotton fabric with 10 polymolecular layers exhibits ∼43% and ∼42% reductions in the peak heat release rate and total heat release, respectively, a desired UL-94 V-0 rating, and a high limiting oxygen index (LOI) value of 39.5 vol.%. In addition to that, the treated fabrics displayed improved electromagnetic interference (EMI) shielding and motion-sensing abilities. The presented work provides a facile and effective surface modification approach to generate multifunctional cotton fabrics with promising practical applications.
研究领域:
材料科学
·
纺织工程
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Tian-Tian Huang,Kai Ning,Bin Zhao
Enhancing the fire-retardant and antibacterial properties of viscose fabric through a simple strategy is crucial and urgent. In this study, an aminoazole-based cyclotriphosphazene (HATA) was designed and synthesized through nucleophilic substitution between hexachlorocyclotriphosphazene and 3-amino-1,2,4-triazole. The application of a rapid dipping strategy and the use of 10 wt% HATA aqueous solution significantly increased the limiting oxygen index of the viscose fabric from 19.3 % to 28.4 %. In addition, the HATA-treated fabric exhibited self-extinguishing properties in vertical flame testing. The peak heat release rate of HATA-treated fabric, according to pyrolysis combustion flow calorimetry , significantly decreased by over 83 %. The scanning electron microscope images revealed the original woven fabric structure after burning. The thermogravimetric infrared spectroscopy and X-ray photoelectron spectroscopy results confirmed that the introduction HATA in viscose hindered the release of combustible gas and facilitated the formation of a protective char layer. In addition, 10 % HATA-viscose exhibited remarkable antimicrobial properties , achieving 99.96 % and 99.84 % antibacterial rates against Staphylococcus aureus and Escherichia coli , respectively. Furthermore, HATA-treated viscose fabric exhibited favorable mechanical performance, whiteness, and air permeability. This research provides a simple and effective flame-retardant and antibacterial treatment strategy for viscose fabric.
研究领域:
材料科学
·
纺织工程
·
化学工程
✓ 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）