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Fawzi T, Al‐Talib AAM. The effect of water and sodium hydrogen carbonate content on flexible polyurethane's microstructure, water, and mechanical properties. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Tarek Fawzi
- Institute of Photonics National Sun Yat‐sen University Kaohsiung City Taiwan
| | - Ammar A. M. Al‐Talib
- Faculty of Engineering, Technology & Built Environment UCSI University Kuala Lumpur Malaysia
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2
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Gunasekaran R, Arul Jesu G, Marimuthu T. Investigation of damping characteristics on
PLA
robotic gripper fingers with magnetorheological fluid core and unimorph piezoelectric
MFC. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ramkumar Gunasekaran
- Department of Mechanical Engineering Coimbatore Institute of Technology Coimbatore India
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3
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Wang XC, Sun YP, Sheng J, Geng T, Turng LS, Guo YG, Liu XH, Liu CT. Effects of expandable graphite on the flame-retardant and mechanical performances of rigid polyurethane foams. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 34:084002. [PMID: 34794133 DOI: 10.1088/1361-648x/ac3b27] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
Polyurethane foams (PUFs) are found everywhere in our daily life, but they suffer from poor fire resistance. In this study, expansible graphite (EG) as flame retardant was incorporated into PUFs to improve material fire resistance. With the presence of EGs in the PU matrix, bubble size in PUF became smaller as confirmed by the scanning electron microscopy. The mass density of PUFs is directly proportional to the content of EG additive. The compression strengths of EG0/PUF and EG30/PUF decrease from 0.51 MPa to 0.29 MPa. The Fourier transform infrared spectroscopy (FTIR) analysis of RPUFs showed that the addition of EGs did not change the functional group structures of RPUFs. Thermo-gravimetric analysis (TGA) testing results showed that the carbon residue weight of EG30/PUF is higher than other PU composite foams. The combination of TGA and FTIR indicated that the EG addition did not change the thermal decomposition products of EG0/PUF, but effectively inhibited its thermal decomposition rate. Cone calorimeter combustion tests indicated that the peak of the heat release rate of EG30/PUF significantly decreased to 100.5 kW m-2compared to 390.6 kW m-2for EG0/PUF. The ignition time of EG/PUF composites also increased from 2 s to 11 s with incorporation of 30 wt% EGs. The limiting oxygen index (LOI) and UL-94 standard tests show that the LOI of EG30/PUF can reach 55 vol%, and go through V-0 level. This study showed that adding EG into PU foams could significantly improve the thermal stability and flame retardancy properties of EG/PUF composites without significantly sacrificing material compression strength. The research results provide useful guidelines on industrial production and applications of PUFs.
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Affiliation(s)
- Xin-Chao Wang
- School of Mechanical & Electrical Engineering, and Henan Provincial Engineering Laboratory of Automotive Composite Materials, Henan University of Technology, Zhengzhou, People's Republic of China
| | - Ya-Peng Sun
- School of Mechanical & Electrical Engineering, and Henan Provincial Engineering Laboratory of Automotive Composite Materials, Henan University of Technology, Zhengzhou, People's Republic of China
| | - Jie Sheng
- School of Mechanical & Electrical Engineering, and Henan Provincial Engineering Laboratory of Automotive Composite Materials, Henan University of Technology, Zhengzhou, People's Republic of China
| | - Tie Geng
- School of Mechanical & Electrical Engineering, and Henan Provincial Engineering Laboratory of Automotive Composite Materials, Henan University of Technology, Zhengzhou, People's Republic of China
| | - Lih-Sheng Turng
- Department of Mechanical Engineering, Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Yong-Gang Guo
- School of Mechanical & Electrical Engineering, and Henan Provincial Engineering Laboratory of Automotive Composite Materials, Henan University of Technology, Zhengzhou, People's Republic of China
| | - Xian-Hu Liu
- National Engineering Research Center for Advanced Polymer Processing Technologies, Zhengzhou University, Zhengzhou, People's Republic of China
| | - Chun-Tai Liu
- National Engineering Research Center for Advanced Polymer Processing Technologies, Zhengzhou University, Zhengzhou, People's Republic of China
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4
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Lu P, Huang S, Shen Y, Zhou C, Shao L. Mechanical performance analysis of polyurethane‐modified asphalt using molecular dynamics method. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25760] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pengzhen Lu
- College of Civil Engineering, Zhejiang University of Technology Hangzhou China
| | - Simin Huang
- College of Civil Engineering, Zhejiang University of Technology Hangzhou China
| | - Yang Shen
- College of Civil Engineering, Zhejiang University of Technology Hangzhou China
| | - Chenhao Zhou
- College of Civil Engineering, Zhejiang University of Technology Hangzhou China
| | - Limin Shao
- College of Civil Engineering, Zhejiang University of Technology Hangzhou China
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5
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Xu B, Yin B, Li Q, Kuang X, Jia H. Tribological performance of self‐lubricating polyurethane elastomer compounding with the modified ultra‐high molecular weight polyethylene. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25719] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Xu
- Department of Power Machinery School of Automotive and Traffic Engineering, Jiangsu University Zhenjiang China
| | - Bifeng Yin
- Department of Power Machinery School of Automotive and Traffic Engineering, Jiangsu University Zhenjiang China
| | - Qianzhu Li
- Department of Material Development Institute of Advanced Polymer Materials Technology, Tech‐in Materials Co., Ltd. Nanjing China
| | - Xin Kuang
- Department of Power Machinery School of Automotive and Traffic Engineering, Jiangsu University Zhenjiang China
| | - Hekun Jia
- Department of Power Machinery School of Automotive and Traffic Engineering, Jiangsu University Zhenjiang China
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6
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Yan H, Li H, Li W, Fan X, Zhang L, Zhu M. Probing the Damping Property of Three‐Dimensional Graphene Aerogels in Carboxylated Nitrile Butadiene Rubber/Polyurethane Blend. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Han Yan
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
| | - Hao Li
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
| | - Wen Li
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
| | - Xiaoqiang Fan
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
| | - Lin Zhang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
| | - Minhao Zhu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
- Tribology Research Institute, School of Mechanical EngineeringSouthwest Jiaotong University Chengdu 610031 China
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