Article
Polymer Science
Percy Festus Alao, Raimond Press, Jussi Ruponen, Valdek Mikli, Jaan Kers
Summary: This article investigates the effects of combining a novel protic ionic liquid-based fire retardant with alkalized hemp fiber. The combination treatment enhances the fire performance of the green composite, making it potentially suitable for building construction and interior materials in vehicles. However, the issue of high smoke emission needs to be addressed.
Review
Construction & Building Technology
Shazzuan Shahari, M. Fathullah, Mohd Mustafa Al Bakri Abdullah, Z. Shayfull, Mozammel Mia, Vertic Eridani Budi Darmawan
Summary: Glass fibre reinforced epoxy composites are widely used in various industries due to their excellent properties, but the flammability of epoxy poses a fire risk. The incorporation of fire retardants and protective coatings can effectively enhance the fire performance of the composites.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Liang Yi, Qian Yang, Long Yan, Ning Wang
Summary: To meet the fire requirements of wood structure buildings, waterborne transparent fire-retardant coatings with multi-function properties are necessary. A novel coating was developed using organophosphate-grafted nano-ZnO as a multifunctional flame retardant. The addition of ZnO nanoparticles significantly improves the mechanical property, smoke suppression property, and fire protection performance of the coatings for wood substrates while maintaining high transparency.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Zhenhua Wang, Weili Feng, Jiachen Ban, Zheng Yang, Xiaomin Fang, Tao Ding, Baoying Liu, Junwei Zhao
Summary: In this study, sisal-fiber-reinforced polypropylene (PP/SF) flame-retardant composites were prepared using the two-step melt blending method. An intumescent flame retardant (IFR) composed of silane-coated ammonium polyphosphate (Si-APP) and pentaerythritol (PER) was used. The PP/SF composite prepared by PP/SF secondary blending with IFR showed excellent flame-retardant performance, with a limited oxygen index of about 28.3% and passing the UL-94 V-0 rating (3.2 mm) in the vertical combustion test. The mechanical properties of the composites prepared using three different mixing processes were similar.
Article
Nanoscience & Nanotechnology
Chaobo Liang, Yuzhang Du, Yiyang Wang, Aijie Ma, Shan Huang, Zhonglei Ma
Summary: The use of wood in construction and electronics poses fire hazards due to its flammability. Intumescent flame retardant coatings, using MPP and GNP, significantly improve the flame retardancy, heat resistance, and EMI shielding of coatings, with potential applications in various fields.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Engineering, Environmental
Congcong Tong, Shuai Zhang, Tuhua Zhong, Zhengping Fang, Hongzhi Liu
Summary: The study successfully prepared intrinsically flame-retardant nanofibrillated cellulose (NFC) from kraft and unbleached bamboo pulps using a three-step strategy. The resulting materials showed improved flame resistance while maintaining mechanical and optical properties, with potential applications in various fields including thermal insulation and electronics.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Wei Hou, Gang Zhang, Shuanhai He
Summary: Research shows that IFC has a significant impact on the fire resistance of prestressed concrete structures, reducing concrete damage and protecting structural prestress effectively. It can significantly reduce the deflection of the structure and improve fire resistance at high temperatures. Additionally, the fire resistance of PC box girders with high flexural rigidity may be determined by ultimate bearing capacity rather than ultimate deflection at high temperature.
Article
Construction & Building Technology
Weiran Song, Shangyong Zhao, Yiming Zhang, Cheng Ruan, Ao Huang, Xiao Hu, Min Zhao, Wen Zhou, Ji Wang, Xuebao Wang, Hui Wang, Zongyu Hou, Zhe Wang
Summary: This study introduces the application of LIBS and chemometrics for rapid post-fire analysis of fire-retardant/resistant coatings. The method successfully identifies the types of FRC, heating devices, and predicts the heating temperatures with high accuracy. The results indicate that LIBS is a promising candidate for rapid on-site FRC analysis in fire protection and investigation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Mechanics
Xingyu Wang, Yafei Xu, Yuqing Cui, Wenkang Li, Liuyang Zhang, Ruqiang Yan, Xuefeng Chen
Summary: With the widespread use of GFRP composites in engineering structures, the quality inspection of GFRPs is urgently needed. The combination of terahertz spectroscopy and artificial intelligence has shown great potential for automatic defect identification inside composites. In this study, a deformable attention convolutional neural network (DACNN) framework-based THz characterization system is proposed to automatically locate and image defects. Experimental results validate the effectiveness of the proposed system, providing a new solution for intelligent and automatic THz characterization of internal debonding defects of composites.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Applied
Liang Yi, Qian Yang, Long Yan, Ning Wang
Summary: A series of organophosphate-grafted nano-TiO2 was synthesized and used in coatings to obtain multifunctional transparent fire-retardant coatings with superior fire resistance, antibacterial, and anti-aging properties.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Liang Yi, Qian Yang, Long Yan, Ning Wang
Summary: A series of organophosphate-grafted nano-TiO2 was synthesized and applied in fire-retardant coatings to achieve multifunctional transparent coatings with superior fire resistance, antibacterial, and anti-aging properties. The presence of nano-TiO2 significantly enhances the fire resistance and antibacterial activity of the coatings, while reducing aging phenomena.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Composites
Atif Javaid, Hafiz Tanveer Ashraf, Muhammad Mustaghees, Arslan Khalid
Summary: This study investigates the fire-retardant performance of lightweight sandwich composites with modified epoxy impregnated carbon and glass fabric reinforcements and an aluminum honeycomb core. It demonstrates improved fire-retardant properties through phosphoric acid treatment of carbon fiber reinforcements and impregnation of epoxy with ammonium polyphosphate (APP) additive. The laboratory aging behavior and mechanical properties of the composites are evaluated to determine the panels' degradation resistance and strength under extreme conditions.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Sheik Mohamed Anees, Aravind Dasari
Summary: The study explores the concept of in situ ceramization to form inorganic cohesive char with improved rigidity and thermo-oxidative stability in traditional intumescent coatings. Thermal analysis and x-ray diffraction confirm reactions between additives to ensure thermo-oxidative stability of residue. Despite the advantages of rigid char, lack of swelling results in poor insulation capabilities.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Fengshan Sun, Mengbao Fan, Binghua Cao, Bo Ye, Lin Liu
Summary: This paper introduces a powerful signal processing method using a customized wavelet basis-based wavelet transform to solve the debonding defects in thermal barrier coatings. By constructing an analytical model of THz signals and selecting the most similar Gaussian wavelet basis to separate overlapped THz pulses, the performance of Gaussian wavelet transform is further improved. A novel firefly algorithm is proposed to search the optimal wavelet parameters. Experimental results demonstrate that this method enables high resolution and accuracy of THz imaging for debonding defects in TBCs when temporal resolution of THz time-domain spectrometer is hardware limited.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Materials Science, Ceramics
Yanhuai Ding, Zuihao Chen, Peisheng Yin
Summary: The frequent occurrence of building fires has led to a need for flame-retardant coatings. However, existing technologies are expensive, inefficient, and harmful to the environment. A silica-alumina sol has been developed as the substrate for flame-retardant coatings, with boron nitride and glass powders used as fillers to improve the flame retardancy. These hybrid coatings form a high-viscosity liquid-solid phase and can be repaired in high-temperature environments. Experimental results show that the hybrid coating acts as an oxygen barrier, protecting the substrates from fire. Additionally, a carbonous layer is formed on the coating surfaces when exposed to flames, hindering the spread of fire. Due to their low cost, high stability, self-repairing capability, and ease of preparation, these hybrid coatings have great potential for use in fire-proof and flame-retarding applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Dongmei Wang, Zhiyong Bai, Lehui Liu, Lei Hu, Yisheng Huang, Feifei Yuan, Dongshan Wei, Zhoubin Lin, Lizhen Zhang
Summary: This study presents a hexahydrated aluminum iodate with a polar space group P6(3), showing SHG activity, high transparency, and a high laser-induced damage threshold at 1064 nm.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Ophthalmology
R. Glenn Hepfer, Peng Chen, Changcheng Shi, Karolinne M. Rocha, George O. Waring, Elizabeth H. Slate, Hai Yao
Summary: The study found that ultraviolet A-riboflavin induced corneal collagen cross-linking leads to a decrease in stromal solute transport, which is concentrated in the most anterior region and AP direction. This effect may be attributed to changes in collagen structure.
EXPERIMENTAL EYE RESEARCH
(2021)
Article
Neurosciences
Huilin Zhou, Changcheng Shi, Jialin Xu, Yehao Ma, Yu Wang, Shidong Lian, Jian Yang, Guokun Zuo
Summary: Rhythmic visual cues reduce cognitive resource demands during gait initiation (GI) compared to non-rhythmic visual cues, as shown by lower amplitude of contingent negative variation (CNV) in the early and late stages of GI preparation. This suggests that rhythmic visual cues are more effective in improving GI ability by requiring less cognitive resources allocation.
NEUROSCIENCE LETTERS
(2021)
Article
Multidisciplinary Sciences
Peng Chen, Xun Chen, R. Glenn Hepfer, Brooke J. Damon, Changcheng Shi, Jenny J. Yao, Matthew C. Coombs, Michael J. Kern, Tong Ye, Hai Yao
Summary: The researchers introduce a noninvasive method, LiFT-FRAP, for determining 3D diffusion tensors of various biomolecules at physiological diffusivity, providing insights into direction-dependent diffusion changes in tissues caused by diseases or scaffold fabrication.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Feifei Yuan, Lei Hu, Zhiyong Bai, Lehui Liu, Yisheng Huang, Lizhen Zhang, Dongshan Wei, Zhoubin Lin
Summary: In this study, two natural deep-ultraviolet (DUV) transparent orthophosphates NH4MgPO4 center dot 6H(2)O (NMP) and KMgPO4 center dot 6H(2)O (KIVIP) were successfully obtained by a simple slow evaporation method. The single-crystal X-ray diffraction data showed that NMP and KMP are isomorphic and belong to the Pmn2(1) space group of the orthorhombic system. Remarkably, these crystals exhibit short cutoff edges below 190 nm and second-harmonic generation (SHG) efficiencies that are 0.62 and 0.80 times that of KH2PO4 (KDP), respectively, with type-I phase matching achieved at 1064 nm.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yehao Ma, Changcheng Shi, Jialin Xu, Sijia Ye, Huilin Zhou, Guokun Zuo
Summary: This paper presents a novel muscle synergy extraction method based on MCR-ALS and compares it with NMF and SMMA algorithms, showing that MCR-ALS has better performance. MCR-ALS was used to analyze muscle synergy in upper limb movements of healthy and stroke subjects, demonstrating higher repeatability and intra-subject consistency compared to NMF, especially in evaluating motor function reliability.
Article
Engineering, Biomedical
Cheng Wang, Shutao Zhang, Jingyan Hu, Zhejing Huang, Changcheng Shi
Summary: This study investigated the consistency of muscle synergy features during robot-assisted and constrained circle-drawing movements for upper limb. The high structural similarity of muscle synergies among healthy subjects during constrained circle-drawing movement suggests a common underlying muscle control mechanism. The muscle synergy analysis during human-robot interaction with circle-drawing movement could be a valuable task for upper-limb motor function assessment.
APPLIED BIONICS AND BIOMECHANICS
(2021)
Article
Engineering, Electrical & Electronic
Qi Mao, Jingbo Liu, Yunlong Zhu, Cixing Lv, Yao Lu, Dongshan Wei, Shihan Yan, Shujiang Ding, Dongxiong Ling
Summary: This paper discusses the importance of high-quality THz images in IC manufacturing and the reasons for image blurring in far-field imaging, proposing a mathematical model to improve THz image resolution.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2021)
Article
Public, Environmental & Occupational Health
M. Zhao, Y. Hu, C. Shi, K. Wang, J. Li, J. Song, C. Huo, Y. Xi, S. Bu, Q. Huang
Summary: This study developed a simple algorithm for screening NAFLD in the Chinese population based on routine anthropometric data and laboratory tests. The algorithm showed high accuracy in predicting early stages of NAFLD in the Chinese population.
Article
Optics
Ziyu Song, Min Liao, Dongxiong Ling, Changshui Chen, Dongshan Wei
Summary: In this study, THz time-domain spectroscopy (THz-TDS) combined with partial least squares (PLS) modeling was used for accurate and quantitative analysis of zinc citrate (ZC) in food mixtures.
Article
Optics
Yanchun Shen, Xiaoming Li, Jinlan Wang, Hongmei Liu, Junhao Jing, Xinxin Deng, Dongshan Wei
Summary: A simple and efficient THz metamaterial based on an asymmetric double split square array resonator was designed and fabricated. The sensitivity and Q value of the metamaterial sensor were theoretically analyzed to be 278 GHz/RIU and 11, respectively. The sensitivity of the THz metamaterial was validated by measuring samples of different concentrations.
Article
Chemistry, Analytical
Yang Hu, Jingyan Meng, Guoning Li, Dazheng Zhao, Guang Feng, Guokun Zuo, Yunfeng Liu, Jiaji Zhang, Changcheng Shi
Summary: Robot-assisted rehabilitation therapy has been proven to effectively improve upper-limb motor function in stroke patients. However, most current rehabilitation robotic controllers provide too much assistance force and only focus on position tracking performance, resulting in the inability to accurately assess the patient's true motor intention and difficulty stimulating their initiative. Therefore, this paper proposes a fuzzy adaptive passive (FAP) control strategy based on subjects' task performance and impulse to address these issues and improve patient outcomes.
Article
Engineering, Electrical & Electronic
Kaikai Wang, Baoliang Feng, Dazheng Zhao, Tao Meng, Jun Wang, Gang Wu, Binjun Shi, Guokun Zuo, Changcheng Shi
Summary: This study proposed a method to enhance the quality of sleeping electrocardiogram (ECG) signals. By adding parallel capacitors at both ends of the coupling capacitance, the signal-to-noise ratio of the ECG signals can be improved, resulting in more accurate monitoring. The experimental results showed that the proposed system obtained ECG signals consistent with the reference system and had a low average heart rate error.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jieqi Yao, Qi Yang, Xiaoyong He, Jiale Li, Dongxiong Ling, Dongshan Wei, Yipeng Liao
Summary: In this study, the quantification of magnesium, copper, manganese, and chromium in aluminum alloy samples was achieved using the femtosecond laser-induced breakdown spectroscopy (fs-LIBS) technique. The experimental parameters were optimized, and background signal preprocessing methods were applied to improve the sensitivity and accuracy of the analysis. The calibration curves and detection limits were established for each element, and significant improvement was observed compared to the results obtained using the fs-LIBS technique.
Article
Materials Science, Multidisciplinary
Lehui Liu, Zhiyong Bai, Lei Hu, Dongshan Wei, Zhoubin Lin, Lizhen Zhang
Summary: A novel organic-inorganic hybrid material based on melamine was successfully synthesized, showing large SHG response, high birefringence, and moderate thermal stability, indicating its potential application as a UV NLO material. This finding opens up possibilities for new NLO materials with specific properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
