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Thermoformable and recyclable CFRP pultruded profile manufactured from an epoxy vitrimer
Polymer testing, 2021-01, Vol.93, p.106931, Article 106931
[Peer Reviewed Journal]
2020 The Authors ;ISSN: 0142-9418 ;EISSN: 1873-2348 ;DOI: 10.1016/j.polymertesting.2020.106931
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Title:
Thermoformable and recyclable CFRP pultruded profile manufactured from an epoxy vitrimer
Author:
Aranberri, Ibon
;
Landa, Maite
;
Elorza, Edurne
;
Salaberria, Asier M.
;
Rekondo, Alaitz
Subjects:
Epoxy vitrimers
;
Pultrusion
;
Recyclable
;
Reprocessable
;
Thermoforming
Is Part Of:
Polymer testing, 2021-01, Vol.93, p.106931, Article 106931
Description:
In the present work a recyclable and reprocessable vitrimer suitable for pultrusion process has been formulated and a pultruded profile reshaped by thermoforming has been manufactured therefrom. A DGEBA epoxy resin with medium range viscosity and a bis(a-aminophenyl disulfide) as dynamic crosslinker were used for the synthesis of the vitrimer. The thermal stability was studied by thermogravimetric analysis (TGA) and curing behaviour and curing kinetics were studied by means of dynamic scanning calorimeter (DSC) and rheology measurements. Mechanical properties of the dynamic resins and its counterpart epoxy resin and of the fabricated carbon fibre reinforced polymers (CFRP) were determined. The dynamic resin showed a fast stress relaxation at temperatures above 150 °C. Finally, as a proof of concept, mechanical recyclability and the thermoforming of the vitrimer-based pultruded profile have been validated. VR-CFRP pultruded profile in the pultrusion line (left) and the wavy profile after being thermoformed (right). [Display omitted] •A recyclable and reprocessable vitrimer suitable for pultrusion process has been formulated.•A pultruded profile reshaped by thermoforming has been manufactured.•Processing of a disulfide based epoxy-vitrimer by conventional pultrusion equipment.
Publisher:
Elsevier Ltd
Language:
English
Identifier:
ISSN: 0142-9418
EISSN: 1873-2348
DOI: 10.1016/j.polymertesting.2020.106931
Source:
DOAJ Directory of Open Access Journals
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