Property characterization and mechanism of thermal degradation of para-aramid fiber

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  • 1. Jiangxi Institute of Fashion Technology,Nanchang 330201;
    2. Jiangxi Centre for Modern Apparel Engineering and Technology,Nanchang 330201;
    3. Shaoxing University,Shaoxing 312000;
    4. Xuzhou University of Technology,Xuzhou 221018

Received date: 2021-05-13

  Revised date: 2021-07-23

  Online published: 2021-11-02

Abstract

The degradation properties and mechanism of para aramid under the condition of high temperature were characterization of thermal degradation temperature,molecular structure and mechanical properties with the help of thermogravimetric analyzer,infrared spectrometer,X-ray diffractometer,ubbelohde viscometer,universal material testing machine and so on.The results showed that the molecular structure,thermal and mechanical properties of the para-aramid fiber remained relatively stable when the temperature was below 350℃.When the temperature was above 350℃,the molecular structure of the fiber cracked and crosslinked gradually,while the thermal and mechanical properties of the fiber decreased with the increasing of temperature.When the temperature was above 450℃,the crystallinity and orientation of the fiber decrease to a certain extent,and the intrinsic viscosity and apparent grain size of crystal surfaces increased to varying degrees with the increasing of temperature.The thermal degradation accorded with the second-order reaction kinetics.

Cite this article

Yang Chen, Lin Yanping, Wang Chenlu, Wang Jingxin . Property characterization and mechanism of thermal degradation of para-aramid fiber[J]. New Chemical Materials, 2021 , 49(10) : 109 -113 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.10.023

References

[1] Rebouilat S,Peng J C,Donnet J B.Surface structure of Kevlar fiber studied by atomic microscopy and inverse gas chromatography[J].Polymer,2000,41(12):4761-4764.
[2] Morgan R J,Pruneda C O,Steele W J.The relationship between the physical structure and microscopic deformation and failure processes of poly(p-phenylene terephthalamide) fibers[J].Journal of Polymer Science:Polymer Physics Edition,1983,21(9):1757-1783.
[3] Kunugi T,Watanabe H,Hashimoto M.Dynamic mechanical properties of poly(p-phenylene terephthalamide) fiber[J].Journal of Applied Polymer Science,1979,24(4):1039-1051.
[4] Li J,Tian W,Yan H.Preparation and performance of aramid nanofiber membrane for separator of lithium ion battery[J].Journal of Applied Polymer Science,2016,133(30):43623.
[5] Cao K,Siepermann C P,Yang M.Reactive aramid nanostructures as high-performance polymeric building blocks for advanced composites[J].Advanced Functional Materials,2013,23(16):2072-2080.
[6] Park B,Lee W,Lee E.Highly tunable interfacial adhesion of glass fiber by hybrid multilayers of graphene oxide and aramid nanofiber[J].Acs Applied Materials &Interfaces,2015,7(5):3329-3334.
[7] Rao Y,Waddon A J,Farris R J.Structure property relation in poly(p-phenylene terephthalamide) (PPTA) fibers[J].Polymer,2001,42(13):5937-5946.
[8] Ahtee M,Hattula T,Mangs J,et al.An X-ray diffraction method for determination of crystallinity of wood pulp[J].Paperi Ja Puu,1988,8:475-480.
[9] Bohn A,Fink H P,Ganster J,et al.X-ray texture investigations of bacterial cellulose[J].Macromolecular Chemistry and Physics,2000,201:1913-1921.
[10] Downing J W,Jr Newell J A.Characterization of structural changes in thermally enhanced Kevlar-29 fiber[J].Journal of Applied Polymer Science,2004,91:417-424.
[11] Alberto C M,Amelia M A,Juan M D,et,al.Porosity development in chars from thermal decomposition of poly (p-phenylene terephthalamide)[J].Polymer Degradation and Stability,2009,94(10):1890.
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