Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media

LIU Yusheng; WANG Hong; SHAN Weizhe

doi:10.13801/j.cnki.fhclxb.20240521.003

Volume 41 Issue 9

Sep. 2024

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LIU Yusheng, WANG Hong, SHAN Weizhe. Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media[J]. Acta Materiae Compositae Sinica, 2024, 41(9): 4959-4965. doi: 10.13801/j.cnki.fhclxb.20240521.003

Citation:

LIU Yusheng, WANG Hong, SHAN Weizhe. Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media[J]. Acta Materiae Compositae Sinica, 2024, 41(9): 4959-4965. doi: 10.13801/j.cnki.fhclxb.20240521.003

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Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media

doi: 10.13801/j.cnki.fhclxb.20240521.003

Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China

Received Date: 2024-03-29
Accepted Date: 2024-05-13
Rev Recd Date: 2024-04-27

Available Online: 2024-05-22

Publish Date: 2024-09-15

Abstract

Abstract

More and more attention is being paid to the filtration failure and the following disposal issues of filter media with its wide application of baghouse dust removal technology. In this paper, TG-IR-GC/MS and DMA are used to investigate the pyrolysis and dynamic mechanical properties of polytetrafluoroethylene (PTFE) fiber needle punched filter media in comparison with aramid fiber filter media, with the aim to provide the guidance of rational application and disposal of PTFE filter media. The results showed that PTFE decomposed in air, producing harmful gases such as carbonyl fluoride, tetrafluoroethylene, and hexafluoropropylene. Compared to PTFE and aramid fiber woven fabric reinforced aramid fiber filter media, the tensile strength of PTFE woven fabric reinforced PTFE fiber needle punched filter media was decreased significantly with the increase of heating temperature. In addition, PTFE filter media exhibited poor creep resistance while PTFE fiber woven fabric reinforced aramid fiber filter media had good creep resistance at low stress level, and aramid woven fabric reinforced aramid fiber filter media exhibited good creep resistance even at higher stress level.
- polytetrafluoroethylene,
- pyrolysis,
- creep,
- aramid,
- filter media
Long Abstrsct
Innovation Points

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References(25)

References

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