Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate
This study synthesized and investigated the efficacy of a novel flame retardant, melamine formaldehyde microencapsulated piperazine pyrophosphate (MFPAPP), in improving the thermal and flame-retardant properties of thermoplastic polyurethane (TPU). When TPU was incorporated with 30wt% MFPAPP, the li...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2023.1178475/full |
| _version_ | 1797828878709817344 |
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| author | Shuang Hu Jianwen Peng Jianjun Tian Chong Xiao |
| author_facet | Shuang Hu Jianwen Peng Jianjun Tian Chong Xiao |
| author_sort | Shuang Hu |
| collection | DOAJ |
| description | This study synthesized and investigated the efficacy of a novel flame retardant, melamine formaldehyde microencapsulated piperazine pyrophosphate (MFPAPP), in improving the thermal and flame-retardant properties of thermoplastic polyurethane (TPU). When TPU was incorporated with 30wt% MFPAPP, the limiting oxygen index (LOI) value of the TPU/MFPAPP composite increased to 38.8%, achieving a V-0 rating. The thermogravimetric test (TG) results confirmed that MFPAPP significantly enhanced the thermal stability of the TPU/MFPAPP composite, as indicated by the increased char residue at 800°C, which was up to 22.4wt%. Compared with the pure TPU samples, the peak heat release rate (PHRR) and total heat release (THR) of TPU/MFPAPP30 decreased by 53% and 45%, respectively. TPU/MFPAPP10 maintained a V-0 rating after the water immersion test, whereas TPU/PAPP degraded to a V-2 rating. Scanning electron microscopy (SEM), Raman spectra, and X-ray photoelectron spectroscopy analyses revealed that MFPAPP promoted the formation of heat-resistant and dense expanded carbon layers. In summary, MFPAPP demonstrated remarkable flame retardancy and thermal stability, making it an ideal candidate for enhancing the fire safety of TPU materials. |
| first_indexed | 2024-04-09T13:11:26Z |
| format | Article |
| id | doaj.art-950f3ccb71454cef905e3644e971c232 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-09T13:11:26Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-950f3ccb71454cef905e3644e971c2322023-05-12T07:06:44ZengFrontiers Media S.A.Frontiers in Materials2296-80162023-05-011010.3389/fmats.2023.11784751178475Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphateShuang HuJianwen PengJianjun TianChong XiaoThis study synthesized and investigated the efficacy of a novel flame retardant, melamine formaldehyde microencapsulated piperazine pyrophosphate (MFPAPP), in improving the thermal and flame-retardant properties of thermoplastic polyurethane (TPU). When TPU was incorporated with 30wt% MFPAPP, the limiting oxygen index (LOI) value of the TPU/MFPAPP composite increased to 38.8%, achieving a V-0 rating. The thermogravimetric test (TG) results confirmed that MFPAPP significantly enhanced the thermal stability of the TPU/MFPAPP composite, as indicated by the increased char residue at 800°C, which was up to 22.4wt%. Compared with the pure TPU samples, the peak heat release rate (PHRR) and total heat release (THR) of TPU/MFPAPP30 decreased by 53% and 45%, respectively. TPU/MFPAPP10 maintained a V-0 rating after the water immersion test, whereas TPU/PAPP degraded to a V-2 rating. Scanning electron microscopy (SEM), Raman spectra, and X-ray photoelectron spectroscopy analyses revealed that MFPAPP promoted the formation of heat-resistant and dense expanded carbon layers. In summary, MFPAPP demonstrated remarkable flame retardancy and thermal stability, making it an ideal candidate for enhancing the fire safety of TPU materials.https://www.frontiersin.org/articles/10.3389/fmats.2023.1178475/fullmicroencapsulationpiperazine pyrophosphatethermoplastic polyurethanethermal analysiswater immersion test |
| spellingShingle | Shuang Hu Jianwen Peng Jianjun Tian Chong Xiao Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate Frontiers in Materials microencapsulation piperazine pyrophosphate thermoplastic polyurethane thermal analysis water immersion test |
| title | Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| title_full | Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| title_fullStr | Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| title_full_unstemmed | Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| title_short | Thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| title_sort | thermal performance of thermoplastic polyurethane composites with microencapsulated piperazine pyrophosphate |
| topic | microencapsulation piperazine pyrophosphate thermoplastic polyurethane thermal analysis water immersion test |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2023.1178475/full |
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