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Mechanical Properties of Rubber-toughened Post-industrial Glass-fiber-reinforced PA66

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Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 21 Issue 2

Abstract

When compounding engineering thermoplastics with glass fibers for reinforcement purposes, a tremendous amount of polymer-containing waste is generated. However, the polymer of interest is usually commingled with the polymer used to purge the extruder. Reclaiming valuable polymer from this waste is hindered by the incompatibility with the purging material since this leads to a blend system that has poor mechanical properties and low economic value. For this reason, this potentially valuable post-industrial polymer-waste is normally land filled. The current research is directed at the characterization and reuse of a post-industrial PA66 filled with glass fibers; this was separated from LDPE purge material and its impact resistance was modified through rubber toughening. Styrene-Ethylene-Butylene-Styrene and Ethylene-Propylene elastomers grafted with maleic anhydride (SEBS-g-MA and EP-g-MA respectively) were used as the toughening agents in this study due to their compatibility with PA. Izod impact strength, tensile strength and modulus, flexural strength, and elongation at break were used to characterize mechanical properties of the rubber-toughened recycled glass-filled PA66. The morphology of the fracture surfaces of the composites was examined by Scanning Electron Microscopy (SEM). It was found that both impact strength and elongation at break increase with increasing rubber content while flexural strength and tensile strength suffer upon incorporating rubber; however, by adding moderate amounts of rubber to the recycled glass-fiber-reinforced PA66 a balance between stiffness and toughness of the material could be obtained. For example, the addition of 10 wt.% of SEBS-g-MA to the recycled PA66 with 23.62 wt.% glass fiber loading resulted in a 27% and 151% increase in tensile strength and impact strength respectively of the blends when compared with neat PA66. This suggests that compounding both glass fibers and elastomers with PA66 is a useful strategy to recycle PA66, especially for reuse in under-the-hood automotive applications.

∗ Mail address: F. D. Alsewailem, King Abdulaziz City for Science and Technology, Petroleum and Petrochemicals Research Institute P.O. Box 6086, Riyadh 11442, Saudi Arabia. E-mail:

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Received: 2005-9-27
Accepted: 2005-12-28
Published Online: 2013-04-06
Published in Print: 2006-05-01

© 2006, Hanser Publishers, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Pressure and Temperature Dependence of LDPE Viscosity and Free Volume: The Effect of Molecular Structure
  5. Correlations between Injection Molding Parameters, Morphology and Mechanical Properties of PPS Using Artificial Neural Networks
  6. Investigations into Kinematic Reversal in Non-isothermal Flows in Single-screw Machines
  7. The Effect of Post-extrusion Conditions in Ribbon Extrusion of Polymer Blends
  8. Effect of the Chemical and Morphological Conditions of the Die Wall on the Extrusion of Linear Polyolefins
  9. Investigation of the Heat Affected Zone of Hot-gas Welded PP Joints
  10. Method for the Optimisation of Screw Elements for Tightly Intermeshing, Co-rotating Twin Screw Extruders
  11. Rheology and Processing of Molten Poly(methyl methacrylate) Resins
  12. PLLA Morphology Controlled by Dry-cast Process
  13. Two Component Injection Molding of Phase Separating Blends
  14. A Low Force Valve for Dynamic Control of Molten Plastics in a Mold
  15. Influence of Drawing and Temperature on the Optical and Structural Properties of Monofilament PP Sutures
  16. Mechanical Properties of Rubber-toughened Post-industrial Glass-fiber-reinforced PA66
  17. Thermal Flow Instability in Metal Injection Molding: Experiment and Simulation
  18. Review Paper
  19. State of the Art: Recycling of EPDM Rubber Vulcanizates
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.0117

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Pressure and Temperature Dependence of LDPE Viscosity and Free Volume: The Effect of Molecular Structure
  5. Correlations between Injection Molding Parameters, Morphology and Mechanical Properties of PPS Using Artificial Neural Networks
  6. Investigations into Kinematic Reversal in Non-isothermal Flows in Single-screw Machines
  7. The Effect of Post-extrusion Conditions in Ribbon Extrusion of Polymer Blends
  8. Effect of the Chemical and Morphological Conditions of the Die Wall on the Extrusion of Linear Polyolefins
  9. Investigation of the Heat Affected Zone of Hot-gas Welded PP Joints
  10. Method for the Optimisation of Screw Elements for Tightly Intermeshing, Co-rotating Twin Screw Extruders
  11. Rheology and Processing of Molten Poly(methyl methacrylate) Resins
  12. PLLA Morphology Controlled by Dry-cast Process
  13. Two Component Injection Molding of Phase Separating Blends
  14. A Low Force Valve for Dynamic Control of Molten Plastics in a Mold
  15. Influence of Drawing and Temperature on the Optical and Structural Properties of Monofilament PP Sutures
  16. Mechanical Properties of Rubber-toughened Post-industrial Glass-fiber-reinforced PA66
  17. Thermal Flow Instability in Metal Injection Molding: Experiment and Simulation
  18. Review Paper
  19. State of the Art: Recycling of EPDM Rubber Vulcanizates
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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