Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood
Cenosphere is an industrial solid waste produced by coal-fired power plants. Its large discharge has resulted in significant environmental problems, and how to solve this problem has become a top priority. In this research, chitosan (CS) bonded-ammonium polyphosphate (APP)/dipentaerythritol (DPER) a...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423014254 |
| _version_ | 1827867642707312640 |
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| author | Fan Li YaChao Wang MengYao Lai HongJi Zhang JiangPing Zhao |
| author_facet | Fan Li YaChao Wang MengYao Lai HongJi Zhang JiangPing Zhao |
| author_sort | Fan Li |
| collection | DOAJ |
| description | Cenosphere is an industrial solid waste produced by coal-fired power plants. Its large discharge has resulted in significant environmental problems, and how to solve this problem has become a top priority. In this research, chitosan (CS) bonded-ammonium polyphosphate (APP)/dipentaerythritol (DPER) are employed to construct cenospheres-based geopolymer coatings using the sol-gel method for flame-retarding plywood. The experimental results indicate that an appropriate pretreatment of APP with CS (0.40 wt%) facilitates the formation of geopolymer coatings, resulting in non-combustible resilient residues during combustion, its effectively block heat and fire sources, significantly decreasing the peak heat release rate from 108.89 to 90.61 kW m−2 and reducing about 80% of smoke production. Meanwhile, the three-level chemical reaction model is identified to govern the hybrid coatings’ pyrolysis. The calculations clarify that an appropriate CS increases its Eα from 266.03 to 345.16 kJ mol−1 at 727–1000 °C, corresponding to enhanced thermal stability. Furthermore, the yielded residues exhibit a formaldehyde adsorption rate of 71.6%, attributed to the formation of interpenetrating networks. Incorporating CS-pretreated APP in cenospheres-based coatings for designing Si–C–P hybrid coatings provides an effective method for recycling cenospheres and promotes the development of sustainable building materials. |
| first_indexed | 2024-03-12T15:20:23Z |
| format | Article |
| id | doaj.art-f3dfb1447c614a5889902dd801fe47ff |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:23Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f3dfb1447c614a5889902dd801fe47ff2023-08-11T05:33:49ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012538653883Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywoodFan Li0YaChao Wang1MengYao Lai2HongJi Zhang3JiangPing Zhao4School of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, ChinaSchool of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, China; Key Laboratory of Solid Waste Treatment and Resource Recycling, Ministry of Education, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai, 201620, China; Corresponding author. School of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, China.School of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, ChinaSchool of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, ChinaSchool of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, 710055, ChinaCenosphere is an industrial solid waste produced by coal-fired power plants. Its large discharge has resulted in significant environmental problems, and how to solve this problem has become a top priority. In this research, chitosan (CS) bonded-ammonium polyphosphate (APP)/dipentaerythritol (DPER) are employed to construct cenospheres-based geopolymer coatings using the sol-gel method for flame-retarding plywood. The experimental results indicate that an appropriate pretreatment of APP with CS (0.40 wt%) facilitates the formation of geopolymer coatings, resulting in non-combustible resilient residues during combustion, its effectively block heat and fire sources, significantly decreasing the peak heat release rate from 108.89 to 90.61 kW m−2 and reducing about 80% of smoke production. Meanwhile, the three-level chemical reaction model is identified to govern the hybrid coatings’ pyrolysis. The calculations clarify that an appropriate CS increases its Eα from 266.03 to 345.16 kJ mol−1 at 727–1000 °C, corresponding to enhanced thermal stability. Furthermore, the yielded residues exhibit a formaldehyde adsorption rate of 71.6%, attributed to the formation of interpenetrating networks. Incorporating CS-pretreated APP in cenospheres-based coatings for designing Si–C–P hybrid coatings provides an effective method for recycling cenospheres and promotes the development of sustainable building materials.http://www.sciencedirect.com/science/article/pii/S2238785423014254Industrial solid wasteCenospheresFlame retardantChitosanAmmonium polyphosphatePyrolysis kinetics |
| spellingShingle | Fan Li YaChao Wang MengYao Lai HongJi Zhang JiangPing Zhao Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood Journal of Materials Research and Technology Industrial solid waste Cenospheres Flame retardant Chitosan Ammonium polyphosphate Pyrolysis kinetics |
| title | Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood |
| title_full | Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood |
| title_fullStr | Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood |
| title_full_unstemmed | Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood |
| title_short | Recycling cenospheres to construct chitosan bonded-ammonium polyphosphate/dipentaerythritol hybrid geopolymer coatings for flame-retarding plywood |
| title_sort | recycling cenospheres to construct chitosan bonded ammonium polyphosphate dipentaerythritol hybrid geopolymer coatings for flame retarding plywood |
| topic | Industrial solid waste Cenospheres Flame retardant Chitosan Ammonium polyphosphate Pyrolysis kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423014254 |
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