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聚四氟乙烯滤料高温裂解和动态力学性能

刘宇升 王洪 单伟哲

刘宇升, 王洪, 单伟哲. 聚四氟乙烯滤料高温裂解和动态力学性能[J]. 复合材料学报, 2025, 42(待排刊): 1-7.
引用本文: 刘宇升, 王洪, 单伟哲. 聚四氟乙烯滤料高温裂解和动态力学性能[J]. 复合材料学报, 2025, 42(待排刊): 1-7.
LIU Yusheng, WANG Hong, Shan Weizhe. Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media[J]. Acta Materiae Compositae Sinica.
Citation: LIU Yusheng, WANG Hong, Shan Weizhe. Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media[J]. Acta Materiae Compositae Sinica.

聚四氟乙烯滤料高温裂解和动态力学性能

详细信息
    通讯作者:

    王洪,博士,教授,硕士生/博士生导师,研究方向为非织造材料与工程, E-mail:wanghong@dhu.edu.cn

  • 中图分类号: TS17; TB332

Pyrolysis and dynamic mechanical properties of polytetrafluoroethylene filter media

  • 摘要: 随着袋式除尘技术的广泛应用,滤袋失效和回收利用等问题愈发引人关注。为了解聚四氟乙烯(PTFE)滤料是否会在使用时产生失效问题和焚烧处理时产生有害气体成分,本文分别采用动态力学分析-固体分析仪和热重-红外-气相色谱质谱联用仪,探究PTFE滤料在高温裂解的气体成分,以及在模拟使用温度下的动态力学性能和蠕变性能,为PTFE滤料的合理使用和后处理提供科学依据。结果表明:PTFE在空气氛围中裂解会产生碳酰氟、四氟乙烯、六氟丙烯等有害气体。与PTFE基布增强和芳纶基布增强芳纶针刺滤料相比,随着温度升高,PTFE基布增强PTFE针刺滤料的拉伸强力显著降低,而芳纶基布增强芳纶针刺滤料则无明显变化。在蠕变性能方面,PTFE滤料抗蠕变性能差,PTFE基布增强芳纶针刺滤料在低应力水平下有良好的抗蠕变性能,而芳纶基布增强芳纶针刺滤料则在高低应力水平下皆有较好的抗蠕变性能。

     

  • 图  1  N2氛围下聚四氟乙烯(PTFE)的热失重曲线

    Figure  1.  Thermal weight loss curve of polytetrafluoroethylene (PTFE) in N2 atmosphere

    图  2  N2氛围下PTFE的裂解色谱图

    Figure  2.  Cracking chromatogram of PTFE in N2 atmosphere

    图  3  空气氛围下PTFE的热失重曲线

    Figure  3.  Thermal weight loss curve of PTFE in air atmosphere

    图  4  空气氛围下逸出气体的红外光谱

    Figure  4.  FT-IR of Pyrolysis gas of PTFE filter in air environment

    图  5  不同温度下PTFE空气氛围的裂解质谱图

    Figure  5.  Mass spectra of PTFE in air atmosphere at different temperatures

    图  6  COF2的标准质谱图

    Figure  6.  Standard mass spectrum of COF2

    图  7  四种针刺滤料的热态拉伸性能

    Figure  7.  Thermal tensile properties of four types of needle punched filter media

    图  8  三种试样在不同应力水平下的蠕变性能(a)1 N(b)10 N

    Figure  8.  Creep testing of three kinds of samples at differentstress levels(a)1 N(b)10 N

    表  1  样品的基本信息

    Table  1.   Basic information of the sample

    Surface
    fiber
    Substrate
    fiber
    Thickness/mm Mass per
    unit/(g·m−2)
    PTFE PTFE 1.05 750
    Aramid PTFE 2.20 508
    Aramid Aramid 2.12 512
    下载: 导出CSV

    表  2  N2氛围下PTFE裂解气体组成

    Table  2.   Pyrolysis gas of PTFE in N2 Atmosphere

    Serial
    number
    Retention
    time/min
    Content/% Pyrolysis gas
    1 2.024 99.8 Tetrafluoroethylene
    2 2.654 0.02 Cyclic unsaturated compound
    下载: 导出CSV
  • [1] 高 坚, 张卫东, 郝新敏, 等. 空气除尘设备及技术的发展[J]. 现代化工, 2003, (10): 49-53

    GAO J, ZHANG W D, HAO X M, et al. Development of air cleaning equipment and technologies[J]. Modern Chemical Industry, 2003, (10): 49-53. (in Chinese)
    [2] 王玉红, 姚 群, 陈志炜. 我国袋式除尘行业技术新进展[J]. 工业安全与环保, 2020, 46(6): 65-70.

    WANG Yuhong, YAO Qun, CHEN Zhiwei. New Technology Development of Bag Filters in China[J]. Industrial Safety and Environmental Protection, 2020, 46(6): 65-70(in Chinese).
    [3] 金小峰, 王恩禄, 王长普. 各种除尘技术性能比较及袋式除尘器在我国的应用前景[J]. 锅炉技术, 2007, (1): 8-12.

    JIN Xiaofeng, WANG Enlu, WANG Changpu. The Analysis of the Performances of all the De-dust Technologies and the Application Prosperity of the Bag Filter in the Coal Fired Utility Boilers[J]. Boiler Technology, 2007, (1): 8-12(in Chinese).
    [4] 陈昊光, 周 诚, 马恩群, 等. 燃煤电厂用耐高温滤料的研究与应用前景分析[J]. 玻璃纤维, 2021, (2): 34-39. doi: 10.3969/j.issn.1005-6262.2021.02.009

    CHEN Haoguang, ZHOU Cheng, MA Enqun, etal. Research and Potential Application Analysis of High Temperature Resistant Chemical Fiber Filter Material Used in Power Industry[J]. Fiber Glass, 2021, (2): 34-39(in Chinese). doi: 10.3969/j.issn.1005-6262.2021.02.009
    [5] 严 烁, 周冠辰, 杨 东, 等. 工业烟气除尘滤料材料与技术的最新进展[J]. 纺织导报, 2022, (3): 34-40

    YAN Shuo, ZhOU Guanchen, YANG Dong, et al. Latest Progress of Dust Removal Bag Filter for Industrial Flue Gas[J]. China Textile Leader, 2022, (3): 34-40(in Chinese).
    [6] BORKAR Sachin, GU Bin, DIRMYER Matthew, et al. Polytetrafluoroethylene nano/microfibers by jet blowing[J]. Polymer, 2006, 47(25): 8337-8343. doi: 10.1016/j.polymer.2006.09.069
    [7] 周立新. 聚四氟乙烯薄膜滤料及其在水泥工业中的应用优势[J]. 新世纪水泥导报, 2000, (4): 28-29.

    ZHOU Lixin. Polytetrafluoroethylene filtration materials covered with micropore membrane and their advantages in cement industry[J]. Cement Guide for New Epoch, 2000, (4): 28-29(in Chinese).
    [8] 郭玉海, 朱海霖, 王 峰, 等. 聚四氟乙烯滤膜的发展及应用[J]. 纺织学报, 2015, 36(9): 149-153.

    GUO Yuhai, ZHU Hailin, WANG Feng, et al. Development and application of polytetrafluoro-ethylene filtration membrane[J]. Journal of Textile Research, 2015, 36(9): 149-153(in Chinese).
    [9] WANG H, CHEN Q, CHEN M, et al. Novel filter material by glass fiber foam laying for nonwoven fabrics[J]. Journal of Industrial Textiles. 2023;53.
    [10] 郑依铭, 吴海波. 聚四氟乙烯滤料的高温蠕变行为与抗蠕变研究[J]. 毛纺科技, 2022, 50(1): 1-6.

    ZHENG Yiming, WU Haibo. High temperature creep behavior and anti-creep treatment of PTFE filter[J]. Wool Textile Journal, 2022, 50(1): 1-6. (in Chinses
    [11] 马 池, 张泾龙, 侯 琳, 等. 聚四氟乙烯在产业用纺织品领域的加工及应用进展[J]. 产业用纺织品, 2023, 41(3): 1-7.

    MA Chi, ZHANG Jinglong, HOU Lin, et al. Progresses in processing and application of polytetrafluoroethylene in technical textile field[J]. Journal of Industrial Textile, 2023, 41(3): 1-7(in Chinese).
    [12] 杨淑英, 孙 娟, 沈浩松, 等. 大气估算模型在我国环境污染损害司法鉴定中的应用[J]. 中国司法鉴定, 2016, (5): 24-31.

    YANG Shuying, SUN Juan, SHEN Haosong, et al. Application of Atmospheric Estimation Model in the Forensic Appraisal of Environmental Pollution Damage[J]. Chinese Journal of Forensic Sciences, 2016, (5): 24-31(in Chinese).
    [13] 王振檩, 崔力争. 聚四氟乙烯热裂解物对健康的影响[J]. 职业与健康, 2007, (19): 1699.

    WANG Z L, CUI L Z. The impact of polytetrafluoroethylene thermal decomposition products on health[J]. Occupation and Health, 2007, (19): 1699(in Chinese).
    [14] 俞雄飞, 杨文潮, 王巧英等. 热裂解气相色谱-质谱法对聚四氟乙烯涂层的热裂解产物分析[J]. 理化检验(化学分册), 2010, 46(12): 1381-1383.

    YU X F, YANG W C, WANG Q Y, et al. Analysis of PTFE Coating for Its Pyrolytic Pruducts by Pyrolysis-GC-MS[J]. Physical Testing and Chemical Analysis Part B(Chemical Analysis), 2010, 46(12): 1381-1383(in Chinese).
    [15] RINSLAND C P, GOLDMAN A, MURCRAY R D, et al. Long-term trends in the concentrations of SF6, CHClF2, and COFz in the lower stratosphere from analysis of high-resolution infrared solar occultation spectra[J]. Geophys. Res-Atmos, 1990, 95(D10): 16 477-16490.
    [16] 梁翾翾, 张小平. 聚四氟乙烯热裂解研究[J]. 化学工业与工程, 2008, 25(4): 5.

    LIANG Xuanxuan, ZHANG Xiaoping. Pyrolysis of polytetrafluoroethylene[J]. Chemical Industry and Engineering, 2008, 25(4): 314-318. (in Chines
    [17] SIMON, C. M, W. KAMINSKY. Chemical recycling of polytetrafluoroethylene by pyrolysis[J]. Polymer Degradation and Stability, 1998, 62(1): 1-7. doi: 10.1016/S0141-3910(97)00097-9
    [18] 李同生, 孙守镁, 胡廷永, 等. 聚四氟乙烯磨损机理的探讨[J]. 摩擦学学报, 1992, (3): 222-232.

    LI T S, SUN S M, HU T Y, et al. Exploration of the wear mechanism of polytetrafluoroethylene[J]. Tribology, 1992, (3): 222-232(in Chinese).
    [19] 马小丰, 董金明, 李洪娟, 等. 高耐磨聚甲醛粉末静电喷涂涂层的配方设计及喷涂工艺研究[J]. 中国塑料, 2023, 37(6): 83-90

    MA Xiaofeng, DONG Jinming, LI Hongjuan, et al. Formula design and powder electrostatic spraying process of polyoxymethylene coatings with high wear resistance[J]. China Plastics, 2023, 37(6): 83-90(in Chinese).
    [20] 寇婉婷. 工业除尘用高效耐磨损覆膜滤料的制备及其性能研究[D]. 苏州大学, 2023.

    KOU W T. Preparation and Performance Study of high-efficiency and wear-resistant filter material for industrial dust removal[D]. Soochow University, 2023. (in Chinese)
    [21] 李明专, 王 君, 鲁圣军, 等. 芳纶纤维的研究现状及功能化应用进展[J]. 高分子通报, 2018, (1): 58-69.

    LI Mingzhuan, WANG Jun, LU Shengjun, et al. The Present Research and the Functional Improvement of the Aramid Fibers[J]. Polymer Bulletin, 2018, (1): 58-69(in Chinese).
    [22] RAE P J, DATTELBAUM D M. The properties of poly(tetrafluoroethylene) (PTFE) in compression[J]. Polymer, 2004, 45: 7615-7625. doi: 10.1016/j.polymer.2004.08.064
    [23] RAE P J, BROWN E N. The properties of poly(tetrafluoroethylene) (PTFE) in tension[J]. Polymer, 2005, 46: 8128-8140. doi: 10.1016/j.polymer.2005.06.120
    [24] 陈聚文, 潘婉莲, 于俊荣, 等. 纤维分子结构与蠕变性能的关系[J]. 高分子材料科学与工程, 2004, (2): 114-117.

    CHEN Juwen, PAN Wanlian, YU Junrong, et al. Relationship between molecular struc-ture and creep properties of fiber[J]. Polymer Materials Science& Engineering, 2004, (2): 114-117(in Chinese).
    [25] SPERATI C A, STARKWEATHER H W. Fluorinecontaining polymers II Polytetrafluoroethylene[J]. Advances in Polymer Science, 1961, (2): 485-486.
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  • 收稿日期:  2024-03-29
  • 修回日期:  2024-04-27
  • 录用日期:  2024-05-13
  • 网络出版日期:  2024-06-14

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