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Naguib HM. Recycled polyester filled with eggshells waste-based nano CaCO 3: thermo-mechanical and flame-retardant features. NEW J CHEM 2023. [DOI: 10.1039/d3nj00538k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Improved environmental-friendly fire-retardant nanocomposite.
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Affiliation(s)
- Hamdy M. Naguib
- Department of Petroleum Applications, Egyptian Petroleum Research Institute (EPRI), Nasr City 11727, Cairo, Egypt
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, China
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Wong JF, Chan JX, Hassan A, Mohamad Z, Hashim S, Abd Razak J, Ching YC, Yunos Z, Yahaya R. Use of synthetic wollastonite nanofibers in enhancing mechanical, thermal, and flammability properties of polyoxymethylene nanocomposites. POLYMER COMPOSITES 2022; 43:7845-7858. [DOI: 10.1002/pc.26902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 07/02/2022] [Indexed: 09/02/2023]
Abstract
AbstractThis study investigates the mechanical, thermal, and flammability properties of synthetic wollastonite nanofibers (SWN) reinforced polyoxymethylene (POM) nanocomposites. SWN has been added into the POM nanocomposites in the range of 0.5–3 phr via melt blending. The mechanical properties were investigated through tensile and impact tests with scanning electron microscopy and energy dispersive X‐ray analysis. The thermal characterization was performed by thermogravimetry analysis and differential scanning calorimetry. Flame retardancy of nanocomposites was studied through cone calorimetry analysis and limiting oxygen index test. The tensile strength of nanocomposites improved by 5.88% at 1 phr SWN content, whereas Young's modulus increased with increasing content. The thermal stability of nanocomposites was enhanced as indicated by the higher initial degradation temperature, which rose about 22°C at 1 phr SWN content. The POM/SWN nanocomposites exhibited better mechanical strength despite their lower crystallinity due to the substantial reinforcing effect of SWN. The flame retardancy of nanocomposites improved, as indicated by the reduction of peak heat release rate from the cone calorimetry test. This study shows that SWN has simultaneously enhanced the mechanical strength, thermal stability, and flame retardancy of POM nanocomposites and has the potential in automotive applications.
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Affiliation(s)
- Joon Fatt Wong
- School of Chemical and Energy Engineering, Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia
| | - Jia Xin Chan
- School of Chemical and Energy Engineering, Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia
| | - Azman Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia
| | - Zurina Mohamad
- School of Chemical and Energy Engineering, Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia
| | - Shahrir Hashim
- School of Chemical and Energy Engineering, Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia
| | - Jeefferie Abd Razak
- Faculty of Manufacturing Engineering Universiti Teknikal Malaysia Melaka Melaka Malaysia
| | - Yern Chee Ching
- Faculty of Engineering Universiti Malaya Kuala Lumpur Malaysia
| | - Zaini Yunos
- Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Malaysia
| | - Ridwan Yahaya
- Science and Technology Research Institute for Defence Malaysia Ministry of Defence Kajang Malaysia
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Lyu P, Hou Y, Wang R, Ma M, Chen Y, Xing Q, Ma Y, Wang S, Wu Y, Huang W. Synthesis of
ZnFe
2
O
4
@
Mg‐Al‐SDBS LDH
composites for regulating heat and fire safety properties of polyurea. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ping Lyu
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Yongbo Hou
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Rongzhen Wang
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
- Xinjiang Production and Construction Corps, Second Division Twenty‐second Mission Economic Development Office Xinjiang People's Republic of China
| | - Mingliang Ma
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Yan Chen
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Qiyang Xing
- Tengzhou Comprehensive Inspection and Testing Center Tengzhou People's Republic of China
| | - Yong Ma
- School of Material Science and Engineering Shandong University of Science and Technology Qingdao People's Republic of China
| | - Shuang Wang
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Yuefeng Wu
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
| | - Weibo Huang
- School of Civil Engineering Qingdao University of Technology Qingdao People's Republic of China
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Experimental Assessment of the Thermal Conductivity of Basalt Fibres at High Temperatures. ENERGIES 2022. [DOI: 10.3390/en15082784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This paper investigates fibrous thermal insulation materials of various densities to assess the change in their thermophysical properties at high temperatures. The thermal conductivity of fibrous thermal insulation materials is discussed as a function of the temperature in the range from 50 °C to 500 °C. It is shown that the thermal insulating properties depend not only on the physical properties of the material (e.g., density or diameter of fibres), but also on the geometric parameters of the structure and on the orientation of the fibres. The influence of high temperatures on the mass change of fibrous materials associated with the burnout of synthetic binders is shown. These features should be taken into account during the design of thermal insulation operating at high temperatures to provide the optimal selection of the material and to guarantee the stability of their thermal properties.
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Towards Mountain Fire Safety Using Fire Spread Predictive Analytics and Mountain Fire Containment in IoT Environment. SUSTAINABILITY 2021. [DOI: 10.3390/su13052461] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mountains are popular tourist destinations due to their climate, fresh atmosphere, breathtaking sceneries, and varied topography. However, they are at times exposed to accidents, such as fire caused due to natural hazards and human activities. Such unforeseen fire accidents have a social, economic, and environmental impact on mountain towns worldwide. Protecting mountains from such fire accidents is also very challenging in terms of the high cost of fire containment resources, tracking fire spread, and evacuating the people at risk. This paper aims to fill this gap and proposes a three-fold methodology for fire safety in the mountains. The first part of the methodology is an optimization model for effective fire containment resource utilization. The second part of the methodology is a novel ensemble model based on machine learning, the heuristic approach, and principal component regression for predictive analytics of fire spread data. The final part of the methodology consists of an Internet of Things-based task orchestration approach to notify fire safety information to safety authorities. The proposed three-fold fire safety approach provides in-time information to safety authorities for making on-time decisions to minimize the damage caused by mountain fire with minimum containment cost. The performance of optimization models is evaluated in terms of execution time and cost. The particle swarm optimization-based model performs better in terms of cost, whereas the bat algorithm performs better in terms of execution time. The prediction models’ performance is evaluated in terms of root mean square error, mean absolute error, and mean absolute percentage error. The proposed ensemble-based prediction model accuracy for fire spread and burned area prediction is higher than that of the state-of-the-art algorithms. It is evident from the results that the proposed fire safety mechanism is a step towards efficient mountain fire safety management.
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