The properties of glass fibres after conditioning at composite recycling temperatures

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Abstract

Results are presented on E-glass fibre properties after thermal conditioning up to 600°C. Thermal conditioning led to up to 70% strength degradation. Tensile strength and failure strain of silane-coated fibres were relatively stable up to 250°C but exhibited a precipitous drop at higher conditioning temperatures. Unsized fibres exhibited a linear decrease in strength with increasing conditioning temperature. Little significant strength regeneration was obtained from a range of acid and silane post-treatments of heat conditioned fibres. A simple analysis of the cumulative fibre strength probability resulted in more useful understanding than the Weibull method. The modulus of both fibre types increased linearly with conditioning temperature. Evidence was found of a slow time-dependent reduction of glass fibre modulus during storage in an uncontrolled environment. The results are discussed in terms of the changes in surface coating and bulk glass structure during heat conditioning and the role of the glass fibre water content.
LanguageEnglish
Pages201-208
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume61
Early online date12 Mar 2014
DOIs
Publication statusPublished - 1 Jun 2014

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Glass fibers
Recycling
Fibers
Composite materials
Silanes
Temperature
Water content
Tensile strength
Elastic moduli
fiberglass
Degradation
Glass
Coatings
Acids
Hot Temperature

Keywords

  • glass fibres
  • mechanical properties
  • heat treatment
  • recycling

Cite this

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title = "The properties of glass fibres after conditioning at composite recycling temperatures",
abstract = "Results are presented on E-glass fibre properties after thermal conditioning up to 600°C. Thermal conditioning led to up to 70{\%} strength degradation. Tensile strength and failure strain of silane-coated fibres were relatively stable up to 250°C but exhibited a precipitous drop at higher conditioning temperatures. Unsized fibres exhibited a linear decrease in strength with increasing conditioning temperature. Little significant strength regeneration was obtained from a range of acid and silane post-treatments of heat conditioned fibres. A simple analysis of the cumulative fibre strength probability resulted in more useful understanding than the Weibull method. The modulus of both fibre types increased linearly with conditioning temperature. Evidence was found of a slow time-dependent reduction of glass fibre modulus during storage in an uncontrolled environment. The results are discussed in terms of the changes in surface coating and bulk glass structure during heat conditioning and the role of the glass fibre water content.",
keywords = "glass fibres, mechanical properties, heat treatment, recycling",
author = "J.L. Thomason and L. Yang and R. Meier",
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T1 - The properties of glass fibres after conditioning at composite recycling temperatures

AU - Thomason, J.L.

AU - Yang, L.

AU - Meier, R.

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N2 - Results are presented on E-glass fibre properties after thermal conditioning up to 600°C. Thermal conditioning led to up to 70% strength degradation. Tensile strength and failure strain of silane-coated fibres were relatively stable up to 250°C but exhibited a precipitous drop at higher conditioning temperatures. Unsized fibres exhibited a linear decrease in strength with increasing conditioning temperature. Little significant strength regeneration was obtained from a range of acid and silane post-treatments of heat conditioned fibres. A simple analysis of the cumulative fibre strength probability resulted in more useful understanding than the Weibull method. The modulus of both fibre types increased linearly with conditioning temperature. Evidence was found of a slow time-dependent reduction of glass fibre modulus during storage in an uncontrolled environment. The results are discussed in terms of the changes in surface coating and bulk glass structure during heat conditioning and the role of the glass fibre water content.

AB - Results are presented on E-glass fibre properties after thermal conditioning up to 600°C. Thermal conditioning led to up to 70% strength degradation. Tensile strength and failure strain of silane-coated fibres were relatively stable up to 250°C but exhibited a precipitous drop at higher conditioning temperatures. Unsized fibres exhibited a linear decrease in strength with increasing conditioning temperature. Little significant strength regeneration was obtained from a range of acid and silane post-treatments of heat conditioned fibres. A simple analysis of the cumulative fibre strength probability resulted in more useful understanding than the Weibull method. The modulus of both fibre types increased linearly with conditioning temperature. Evidence was found of a slow time-dependent reduction of glass fibre modulus during storage in an uncontrolled environment. The results are discussed in terms of the changes in surface coating and bulk glass structure during heat conditioning and the role of the glass fibre water content.

KW - glass fibres

KW - mechanical properties

KW - heat treatment

KW - recycling

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