Direct stamp forming of flexible hybrid fibre preforms for thermoplastic composites
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Date
2021
Publication Type
Conference Paper
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yes
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Abstract
Hybrid fibres combine individual reinforcing filaments with a precise amount of thermoplastic polymer matrix, providing an alternative solution to pre-consolidated blanks in stamp forming of thermoplastic composites. Preforms made from such fibres remain flexible at ambient conditions. This study investigates the consolidation behaviour of unidirectional arrangements made from E-glass monofilaments clad in polycarbonate sheaths (69 vol% glass). It assesses the influence of pre-heating temperature, press temperature, and holding time inside the press on the resulting laminates’ void content. The results prove that preforms made from hybrid fibres can be directly stamp formed while achieving void contents below 0.35 vol% with dwell times inside the press as low as 5 s for 1 mm thick laminates.
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published
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Book title
SAMPE Europe Conference 2020 Amsterdam: The Future Composite Footprints
Journal / series
Volume
2
Pages / Article No.
889 - 894
Publisher
Curran
Event
SAMPE Europe Conference 2020 (virtual)
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Organisational unit
03507 - Ermanni, Paolo (emeritus) / Ermanni, Paolo (emeritus)
Notes
Conference lecture held on September 30, 2020. Due to the Coronavirus (COVID-19) the conference was conducted virtually.
Funding
165994 - Bicomponent fibres for Thermoplastic Composites: Towards New Intermediate Materials for High Volume Manufacturing using Stamp Forming (SNF)