Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Optimization of the fibre-matrix interphase region is critical to achieving the required performance level in thermoplastic matrix composites. Due to its initial location on the fibre surface, the sizing layer is an important component in the formation and properties of the composite interphase. Consequently, any attempt to understand the science of the composite interphase must encompass an understanding of the science of sizing. In this paper the role of sizings from fibre manufacture through to performance of composite parts is reviewed. In particular the role of organosilane coupling agents and how the formation of a polysiloxane interphase is influenced by the surface properties of the fibre is examined. The influence of the sizing film former in terms of its level of interaction with the silane coupling agent is also examined. The importance of residual stresses in thermoplastic composites in the values obtained for the apparent adhesion levels in these systems is highlighted. These residual stresses are shown to play a significant role in determining the level of interfacial strength in thermoplastic composites and in particular in polyolefin matrices. By applying some of the available models for this phenomenon this analysis is extended to explore the effect of the anisotropic fibre microstructure of carbon, aramid and natural fibres on the apparent interfacial strength in thermoplastic composites.
LanguageEnglish
Title of host publicationProceedings of the 28th Risø International Conference on Materials Science
Number of pages18
Publication statusPublished - 2007

Fingerprint

Thermoplastics
Glass
Composite materials
Fibers
Coupling agents
Residual stresses
Aramid fibers
Natural fibers
Polyolefins
Silanes
Silicones
Carbon fibers
Surface properties
Adhesion
Microstructure

Keywords

  • polymer composites
  • polyamide
  • glass
  • materials science

Cite this

Thomason, J. L. (2007). Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation. In Proceedings of the 28th Risø International Conference on Materials Science
Thomason, J.L. / Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation. Proceedings of the 28th Risø International Conference on Materials Science. 2007.
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language = "English",
booktitle = "Proceedings of the 28th Ris{\o} International Conference on Materials Science",

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Thomason, JL 2007, Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation. in Proceedings of the 28th Risø International Conference on Materials Science.

Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation. / Thomason, J.L.

Proceedings of the 28th Risø International Conference on Materials Science. 2007.

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

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AU - Thomason, J.L.

PY - 2007

Y1 - 2007

N2 - Optimization of the fibre-matrix interphase region is critical to achieving the required performance level in thermoplastic matrix composites. Due to its initial location on the fibre surface, the sizing layer is an important component in the formation and properties of the composite interphase. Consequently, any attempt to understand the science of the composite interphase must encompass an understanding of the science of sizing. In this paper the role of sizings from fibre manufacture through to performance of composite parts is reviewed. In particular the role of organosilane coupling agents and how the formation of a polysiloxane interphase is influenced by the surface properties of the fibre is examined. The influence of the sizing film former in terms of its level of interaction with the silane coupling agent is also examined. The importance of residual stresses in thermoplastic composites in the values obtained for the apparent adhesion levels in these systems is highlighted. These residual stresses are shown to play a significant role in determining the level of interfacial strength in thermoplastic composites and in particular in polyolefin matrices. By applying some of the available models for this phenomenon this analysis is extended to explore the effect of the anisotropic fibre microstructure of carbon, aramid and natural fibres on the apparent interfacial strength in thermoplastic composites.

AB - Optimization of the fibre-matrix interphase region is critical to achieving the required performance level in thermoplastic matrix composites. Due to its initial location on the fibre surface, the sizing layer is an important component in the formation and properties of the composite interphase. Consequently, any attempt to understand the science of the composite interphase must encompass an understanding of the science of sizing. In this paper the role of sizings from fibre manufacture through to performance of composite parts is reviewed. In particular the role of organosilane coupling agents and how the formation of a polysiloxane interphase is influenced by the surface properties of the fibre is examined. The influence of the sizing film former in terms of its level of interaction with the silane coupling agent is also examined. The importance of residual stresses in thermoplastic composites in the values obtained for the apparent adhesion levels in these systems is highlighted. These residual stresses are shown to play a significant role in determining the level of interfacial strength in thermoplastic composites and in particular in polyolefin matrices. By applying some of the available models for this phenomenon this analysis is extended to explore the effect of the anisotropic fibre microstructure of carbon, aramid and natural fibres on the apparent interfacial strength in thermoplastic composites.

KW - polymer composites

KW - polyamide

KW - glass

KW - materials science

M3 - Chapter

BT - Proceedings of the 28th Risø International Conference on Materials Science

ER -

Thomason JL. Interfaces and interfacial effects in glass reinforced thermoplastics - Keynote Presentation. In Proceedings of the 28th Risø International Conference on Materials Science. 2007