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Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres

  • X.-W. Wang , Z.-M. Hu und Z.-F. Liu
Veröffentlicht/Copyright: 6. April 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 23 Heft 1

Abstract

The thermal degradation behavior of meta- and para-aramid fibers (PMIA and PPTA) in different atmospheres was studied by thermogravimetric analysis coupled with mass spectrometry (TGA-DTA/MS). The process of mass loss in the degradation of PMIA was divided into three steps in both argon and air. The mass loss of PPTA was greater than that of PMIA in argon when the temperature reached 1000°C. Simultaneous TG/DTA measurements showed that the thermal degradation was endothermic in argon and exothermic in air for both fibers. Mass spectra of volatiles were obtained, and PMIA and PPTA gave similar mass signals. The temperatures of maximum abundances in ion currents corresponded to the temperatures of mass loss peaks in the DTG curves. The relative values of ion currents were compared at various temperatures. The yield of CO2 was the largest fraction in ion currents of all the volatiles, and the abundances of ion currents of phenyl compounds were low. The elemental analyses of decomposed PMIA and PPTA fibers provided direct information of chemical and morphological changes. A synthetic kinetic model was introduced, and the analyses of kinetic parameters were used to explain the degradation progresses.

∗ Mail address: Zu-Ming Hu, College of Material Science & Engineering, Donghua University, 201620 Shanghai, PRC. E-mail:

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Received: 2007-4-4
Accepted: 2007-10-30
Published Online: 2013-04-06
Published in Print: 2008-03-01

© 2008, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
  5. Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
  6. Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
  7. Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
  8. Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
  9. Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
  10. Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
  11. A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
  12. Shrinkage Analysis on Convex Shellby Injection Molding
  13. Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
  14. Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
  15. Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
  16. Experimental Analysis of Heat Transfer in Rotational Molding Process
  17. Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
  18. Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
  19. Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.2046

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
  5. Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
  6. Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
  7. Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
  8. Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
  9. Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
  10. Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
  11. A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
  12. Shrinkage Analysis on Convex Shellby Injection Molding
  13. Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
  14. Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
  15. Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
  16. Experimental Analysis of Heat Transfer in Rotational Molding Process
  17. Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
  18. Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
  19. Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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