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Dong F, Luo Z, Wang B. Preparation of Mn 2+ Doped Piperazine Phosphate as a Char-Forming Agent for Improving the Fire Safety of Polypropylene/Ammonium Polyphosphate Composites. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7589. [PMID: 34947182 PMCID: PMC8707045 DOI: 10.3390/ma14247589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 12/14/2022]
Abstract
A piperazine phosphate doped with Mn2+ (HP-Mn), as a new char-forming agent for intumescent flame retardant systems (IFR), was designed and synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid, piperazine, and manganese acetate tetrahydrate as raw materials. The effect of HP-Mn and ammonium polyphosphate (APP) on the fire safety and thermal stability of polypropylene (PP) was investigated. The results showed that the combined incorporation of 25 wt.% APP/HP-Mn at a ratio of 1:1 endowed the flame retardant PP (PP6) composite with the limiting oxygen index (LOI) of 30.7% and UL-94 V-0 rating. In comparison with the pure PP, the peak heat release rate (PHRR), the total heat release (THR), and the smoke production rate (PSPR) of the PP6 were reduced by 74%, 30%, and 70%, respectively. SEM and Raman analysis of the char residues demonstrated that the Mn2+ displayed a catalytic cross-linking charring ability to form a continuous and compact carbon layer with a high degree of graphitization, which can effectively improve the flame retardancy of PP/APP composites. A possible flame-retardant mechanism was proposed to reveal the synergistic effect between APP and HP-Mn.
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Affiliation(s)
| | | | - Biaobing Wang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; (F.D.); (Z.L.)
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Halloysite Nanotubes and Silane-Treated Alumina Trihydrate Hybrid Flame Retardant System for High-Performance Cable Insulation. Polymers (Basel) 2021; 13:polym13132134. [PMID: 34209627 PMCID: PMC8272039 DOI: 10.3390/polym13132134] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 11/17/2022] Open
Abstract
The effect of the presence of halloysite nanotubes (HNTs) and silane-treated alumina trihydrate (ATH-sil) nanofillers on the mechanical, thermal, and flame retardancy properties of ethylene-vinyl acetate (EVA) copolymer/low-density polyethylene (LDPE) blends was investigated. Different weight percentages of HNT and ATH-sil nanoparticles, as well as the hybrid system of those nanofillers, were melt mixed with the polymer blend (reference sample) using a twin-screw extruder. The morphology of the nanoparticles and polymer compositions was studied using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The mechanical properties, hardness, water absorption, and melt flow index (MFI) of the compositions were assessed. The tensile strength increases as a function of the amount of HNT nanofiller; however, the elongation at break decreases. In the case of the hybrid system of nanofillers, the compositions showed superior mechanical properties. The thermal properties of the reference sample and those of the corresponding sample with nanofiller blends were studied using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Two peaks were observed in the melting and crystallization temperatures. This shows that the EVA/LDPE is an immiscible polymer blend. The thermal stability of the blends was improved by the presence of HNTs and ATH-sil nanoparticles. Thermal degradation temperatures were shifted to higher values by the presence of hybrid nanofillers. Finally, the flammability of the compositions was assessed. Flammability as reflected by the limiting oxygen index (OI) was increased by the presence of HNT and ATH-sil nanofiller and a hybrid system of the nanoparticles.
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Wang C, Wu Y, Li Y, Shao Q, Yan X, Han C, Wang Z, Liu Z, Guo Z. Flame-retardant rigid polyurethane foam with a phosphorus-nitrogen single intumescent flame retardant. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4105] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chao Wang
- School of Materials Science and Engineering; North University of China; No. 3 Xueyuan Road Taiyuan Shanxi 030051 PR China
| | - Yicheng Wu
- School of Materials Science and Engineering; North University of China; No. 3 Xueyuan Road Taiyuan Shanxi 030051 PR China
| | - Yingchun Li
- School of Materials Science and Engineering; North University of China; No. 3 Xueyuan Road Taiyuan Shanxi 030051 PR China
| | - Qian Shao
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; Qingdao Shandong 266590 China
| | - Xingru Yan
- Integrated Composites Laboratory, Department of Chemical and Biomolecular Engineering; University of Tennessee; Knoxville Tennessee 37996 USA
| | - Cui Han
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; Qingdao Shandong 266590 China
| | - Zhe Wang
- Department of Chemistry; Xavier University of Louisiana; New Orleans Louisiana 70125 USA
| | - Zhen Liu
- Department of Physics and Engineering; Frostburg State University; Frostburg Maryland 21532 USA
| | - Zhanhu Guo
- Integrated Composites Laboratory, Department of Chemical and Biomolecular Engineering; University of Tennessee; Knoxville Tennessee 37996 USA
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Xu L, Lei C, Xu R, Zhang X, Zhang F. Hybridization of α-zirconium phosphate with hexachlorocyclotriphosphazene and its application in the flame retardant poly(vinyl alcohol) composites. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.09.025] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Fire property and charring behavior of high impact polystyrene containing expandable graphite and microencapsulated red phosphorus. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.09.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zheng Z, Yang T, Wang B, Qu B, Wang H. Microencapsulated melamine phosphate via the sol-gel method and its application in halogen-free and intumescent flame-retarding acrylonitrile-butadiene-styrene copolymer. POLYM INT 2015. [DOI: 10.1002/pi.4919] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zaihang Zheng
- College of Chemistry; Jilin University; Changchun 130012 PR China
| | - Ting Yang
- College of Chemistry; Jilin University; Changchun 130012 PR China
| | - Bingnan Wang
- College of Chemistry; Jilin University; Changchun 130012 PR China
| | - Bingbing Qu
- College of Chemistry; Jilin University; Changchun 130012 PR China
| | - Hongyan Wang
- College of Chemistry; Jilin University; Changchun 130012 PR China
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Chen X, Zhuo J, Song W, Jiao C, Qian Y, Li S. Flame retardant effects of organic inorganic hybrid intumescent flame retardant based on expandable graphite in silicone rubber composites. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3397] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xilei Chen
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
| | - Jinlong Zhuo
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
| | - Wenkui Song
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
| | - Chuanmei Jiao
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
| | - Yi Qian
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
| | - Shaoxiang Li
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; Qingdao Shandong 266042 PR China
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Mhike W, Ferreira IVW, Li J, Stoliarov SI, Focke WW. Flame retarding effect of graphite in rotationally molded polyethylene/graphite composites. J Appl Polym Sci 2014. [DOI: 10.1002/app.41472] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Washington Mhike
- Institute for Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield Pretoria 0028 South Africa
| | - Ignatius V. W. Ferreira
- Institute for Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield Pretoria 0028 South Africa
| | - Jing Li
- Department of Fire Protection Engineering; University of Maryland; College Park Maryland 20742
- Department of Mechanical Engineering; University of Maryland; College Park Maryland 20742
| | - Stanislav I. Stoliarov
- Department of Fire Protection Engineering; University of Maryland; College Park Maryland 20742
- Department of Mechanical Engineering; University of Maryland; College Park Maryland 20742
| | - Walter W. Focke
- Institute for Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield Pretoria 0028 South Africa
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Preparation of microencapsulated ammonium polyphosphate with carbon source- and blowing agent-containing shell and its flame retardance in polypropylene. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0443-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Xu Y, Chen M, Ning X, Chen X, Sun Z, Ma Y, Qin J, Yu J, Zhang Z, Yang L, Bo X, Chen Z. The Thermal Stability and Flammability of Expandable Graphite-Filled Polypropylene/Thermoplastic Polyurethane Blends. J MACROMOL SCI B 2014. [DOI: 10.1080/00222348.2013.860307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Focke WW, Kruger HJ, Mhike W, Taute A, Roberson A, Ofosu O. Polyethylene flame retarded with expandable graphite and a novel intumescent additive. J Appl Polym Sci 2014. [DOI: 10.1002/app.40493] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Walter Wilhelm Focke
- SARChI Chair in Carbon Technology and Materials, Institute of Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield 0028 South Africa
| | - Hermanus Joachim Kruger
- SARChI Chair in Carbon Technology and Materials, Institute of Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield 0028 South Africa
| | - Washington Mhike
- SARChI Chair in Carbon Technology and Materials, Institute of Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield 0028 South Africa
| | - Albertus Taute
- SARChI Chair in Carbon Technology and Materials, Institute of Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield 0028 South Africa
| | - Albert Roberson
- SARChI Chair in Carbon Technology and Materials, Institute of Applied Materials; Department of Chemical Engineering; University of Pretoria; Private Bag X20 Hatfield 0028 South Africa
| | - Osei Ofosu
- CSIR Materials Science and Manufacturing; PO Box 1124 Port Elizabeth 6000 South Africa
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Shen MY, Li KY, Kuan CF, Kuan HC, Chen CH, Yip MC, Chou HW, Chiang CL. Preparation of expandable graphite via ozone-hydrothermal process and flame-retardant properties of high-density polyethylene composites. HIGH PERFORM POLYM 2013. [DOI: 10.1177/0954008313495065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This work presented the ozone (O3)-hydrothermal process to prepare expandable graphite (EG), which is one kind of halogen-free flame retardant. The results showed the expanded volume of EG using the O3-hydrothermal process (O3-HEG), which is higher than those compared with convectional liquid phase synthesis, ultrasound irradiation, and hydrothermal method. Raman spectra and energy dispersive x-ray were used to analyze the structure and confirm that the EG had been prepared. Scanning electron microscope was utilized to observe the morphology of EG and expanded graphite. Thermogravimetric analysis shows that EG can slowdown thermal degradation of polymer and improve the thermal stability of composites. Limiting oxygen index value of composites with 40 wt% loading of O3-HEG is 33, which is higher than that of high-density polyethylene (HDPE)/natural graphite composite. HDPE composites-containing 30 wt % O3-HEG is capable of passing the V-0 classification and has an anti-dripping behavior.
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Affiliation(s)
- Ming-Yuan Shen
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Plastic Industry Development Center, Taichung, Taiwan
| | - Kuo-Yi Li
- Department of Industrial Engineering and Management, National Chin-Yi University, Taichung, Taiwan
| | - Chen-Feng Kuan
- Department of Computer Application Engineering, Far East University, Tainan, Taiwan
| | - Hsu-Chiang Kuan
- Department of Computer Application Engineering, Far East University, Tainan, Taiwan
| | - Chia-Hsun Chen
- Department of Material Science and Engineering, Far East University, Tainan, Taiwan
| | | | - Huang-Wen Chou
- Green Flame Retardant Material Research Laboratory, Department of Safety, Health and Environmental Engineering, Hung-Kuang University, Taichung, Taiwan
| | - Chin-Lung Chiang
- Green Flame Retardant Material Research Laboratory, Department of Safety, Health and Environmental Engineering, Hung-Kuang University, Taichung, Taiwan
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Duan HJ, Kang HQ, Zhang WQ, Ji X, Li ZM, Tang JH. Core-shell structure design of pulverized expandable graphite particles and their application in flame-retardant rigid polyurethane foams. POLYM INT 2013. [DOI: 10.1002/pi.4489] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hong-Ji Duan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 PR China
| | - Hai-Quan Kang
- College of Chemical Engineering; Sichuan University; Chengdu PR China
| | - Wei-Qin Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 PR China
| | - Xu Ji
- College of Chemical Engineering; Sichuan University; Chengdu PR China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 PR China
| | - Jian-Hua Tang
- College of Chemical Engineering; Sichuan University; Chengdu PR China
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Tang G, Zhang R, Wang X, Wang B, Song L, Hu Y, Gong X. Enhancement of Flame Retardant Performance of Bio-Based Polylactic Acid Composites with the Incorporation of Aluminum Hypophosphite and Expanded Graphite. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.742835] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Hu XM, Wang DM. Enhanced fire behavior of rigid polyurethane foam by intumescent flame retardants. J Appl Polym Sci 2012. [DOI: 10.1002/app.38722] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Yuan B, Bao C, Guo Y, Song L, Liew KM, Hu Y. Preparation and Characterization of Flame-Retardant Aluminum Hypophosphite/Poly(Vinyl Alcohol) Composite. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301650f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bihe Yuan
- State Key Laboratory of Fire
Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China
- USTC-CityU Joint Advanced Research
Centre, Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute
for Advanced Study, University of Science and Technology of China, 166 Ren’ai Road, Suzhou, Jiangsu, 215123,
People’s Republic of China
| | - Chenlu Bao
- State Key Laboratory of Fire
Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China
| | - Yuqiang Guo
- State Key Laboratory of Fire
Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China
| | - Lei Song
- State Key Laboratory of Fire
Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China
| | - Kim Meow Liew
- USTC-CityU Joint Advanced Research
Centre, Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute
for Advanced Study, University of Science and Technology of China, 166 Ren’ai Road, Suzhou, Jiangsu, 215123,
People’s Republic of China
- Department of Building and Construction,
City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong
| | - Yuan Hu
- State Key Laboratory of Fire
Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China
- USTC-CityU Joint Advanced Research
Centre, Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute
for Advanced Study, University of Science and Technology of China, 166 Ren’ai Road, Suzhou, Jiangsu, 215123,
People’s Republic of China
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Sorrentino L, Aurilia M, Cafiero L, Cioffi S, Iannace S. Mechanical behavior of solid and foamed polyester/expanded graphite nanocomposites. J CELL PLAST 2012. [DOI: 10.1177/0021955x12449641] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Poly(ethylene 2,6-naphthalate)- PEN is a thermoplastic polyester characterized by a high glass transition temperature (125°C), comparable to that of polyetheretherketone (143°C), but with a significantly lower melting temperature (265°C). Its physical and chemical properties are very promising for applications in transport industry and aeronautics. Nanocomposite matrices based on PEN and expanded graphite were developed to be used as matrix for foams. Expanded graphite was melt blended with the polymer by means of extrusion process and its effects on the foaming properties were investigated through solid state foaming process. Graphite nanoparticles increased the crystallization kinetics of the polymer, inducing the formation of small crystals but lowering the total amount of crystalline phase. Transmission electron microscopy analysis showed a good dispersion of the nanofiller but some aggregates were still present, as also confirmed by graphite peak in the X-ray diffraction patterns of all nanocomposites. The elastic modulus of nanocomposites with amorphous matrix increased with respect to the neat amorphous PEN, while the modulus of crystallized nanocomposites decreased. Nanocomposite foams were successfully prepared, and an higher cell density was obtained when compared to the neat PEN. In the latter case, a strong increase in both yield and strain at break was measured. Furthermore, the elastic modulus and compressive yield stress of foamed PEN nanocomposites increased with the expanded graphite.
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Affiliation(s)
- Luigi Sorrentino
- Institute for Composite and Biomedical Materials (IMCB)-CNR, Portici, Naples, Italy
- Technological District on Polymeric and Composite Materials Engineering and Structures (IMAST), Portici, Naples, Italy
| | - Marco Aurilia
- Technological District on Polymeric and Composite Materials Engineering and Structures (IMAST), Portici, Naples, Italy
| | - Livia Cafiero
- Institute for Composite and Biomedical Materials (IMCB)-CNR, Portici, Naples, Italy
| | - Salvatore Cioffi
- Institute for Composite and Biomedical Materials (IMCB)-CNR, Portici, Naples, Italy
| | - Salvatore Iannace
- Institute for Composite and Biomedical Materials (IMCB)-CNR, Portici, Naples, Italy
- Technological District on Polymeric and Composite Materials Engineering and Structures (IMAST), Portici, Naples, Italy
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Bian J, Wei XW, Lin HL, Chang IT, Sancaktar E. Retracted: PP/PP-g-MAH/layered expanded graphite oxide nanocomposites prepared via masterbatch process. J Appl Polym Sci 2012. [DOI: 10.1002/app.38243] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Ge LL, Duan HJ, Zhang XG, Chen C, Tang JH, Li ZM. Synergistic effect of ammonium polyphosphate and expandable graphite on flame-retardant properties of acrylonitrile-butadiene-styrene. J Appl Polym Sci 2012. [DOI: 10.1002/app.36997] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Svoboda P, Theravalappil R, Poongavalappil S, Vilcakova J, Svobodova D, Mokrejs P, Blaha A. A study on electrical and thermal conductivities of ethylene-octene copolymer/expandable graphite composites. POLYM ENG SCI 2012. [DOI: 10.1002/pen.22192] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Wang B, Hu S, Zhao K, Lu H, Song L, Hu Y. Preparation of Polyurethane Microencapsulated Expandable Graphite, and Its Application in Ethylene Vinyl Acetate Copolymer Containing Silica-Gel Microencapsulated Ammonium Polyphosphate. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200886e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bibo Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Shuang Hu
- Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, 166 Ren’ai Road, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Kuimin Zhao
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Hongdian Lu
- Department of Chemical and Materials Engineering, Hefei University, 373 Huangshan Road, Hefei, Anhui, 230022, People’s Republic of China
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
- Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, 166 Ren’ai Road, Suzhou, Jiangsu 215123, People’s Republic of China
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26
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Synergistic effect between expandable graphite and ammonium polyphosphate on flame retarded polylactide. Polym Degrad Stab 2011. [DOI: 10.1016/j.polymdegradstab.2010.11.017] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Ye L, Meng XY, Ji X, Li ZM, Tang JH. Synthesis and characterization of expandable graphite–poly(methyl methacrylate) composite particles and their application to flame retardation of rigid polyurethane foams. Polym Degrad Stab 2009. [DOI: 10.1016/j.polymdegradstab.2009.03.016] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Dasari A, Yu ZZ, Mai YW, Cai G, Song H. Roles of graphite oxide, clay and POSS during the combustion of polyamide 6. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.01.050] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Zhao CX, Liu Y, Wang DY, Wang DL, Wang YZ. Synergistic effect of ammonium polyphosphate and layered double hydroxide on flame retardant properties of poly(vinyl alcohol). Polym Degrad Stab 2008. [DOI: 10.1016/j.polymdegradstab.2008.04.002] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Flammability characteristics and flame retardant mechanism of phosphate-intercalated hydrotalcite in halogen-free flame retardant EVA blends. Polym Degrad Stab 2008. [DOI: 10.1016/j.polymdegradstab.2008.02.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Li G, Liang G, He T, Yang Q, Song X. Effects of EG and MoSi2 on thermal degradation of intumescent coating. Polym Degrad Stab 2007. [DOI: 10.1016/j.polymdegradstab.2007.01.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Wang Z, Han E, Ke W. Effect of acrylic polymer and nanocomposite with nano-SiO2 on thermal degradation and fire resistance of APP–DPER–MEL coating. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2006.03.001] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gorham J, Torres J, Wolfe G, d'Agostino A, Fairbrother DH. Surface Reactions of Molecular and Atomic Oxygen with Carbon Phosphide Films. J Phys Chem B 2005; 109:20379-86. [PMID: 16853637 DOI: 10.1021/jp0521196] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The surface reactions of atomic and molecular oxygen with carbon phosphide films have been studied using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). Carbon phosphide films were produced by ion implantation of trimethylphosphine into polyethylene. Atmospheric oxidation of carbon phosphide films was dominated by phosphorus oxidation and generated a carbon-containing phosphate surface film. This oxidized surface layer acted as an effective diffusion barrier, limiting the depth of phosphorus oxidation within the carbon phosphide film to < 3 nm. The effect of atomic oxygen (AO) exposure on this oxidized carbon phosphide layer was subsequently probed in situ using XPS. Initially AO exposure resulted in a loss of carbon atoms from the surface, but increased the surface concentration of phosphorus atoms as well as the degree of phosphorus oxidation. For more prolonged AO exposures, a highly oxidized phosphate surface layer formed that appeared to be inert toward further AO-mediated erosion. By utilizing phosphorus-containing hydrocarbon thin films, the phosphorus oxides produced during exposure to AO were found to desorb at temperatures >500 K under vacuum conditions. Results from this study suggest that carbon phosphide films can be used as AO-resistant surface coatings on polymers.
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Affiliation(s)
- Justin Gorham
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, MA 21218, USA
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