PROCEDIMENTO PER LA PRODUZIONE DI SCHIUME DI PET E SCHIUME DI PET OTTENUTE CON QUESTO PROCEDIMENTO

PROCEDIMENTO PER LA PRODUZIONE DI SCHIUME DI PET E SCHIUME DI PET OTTENUTE CON QUESTO PROCEDIMENTO

A process for the production of PET foams includes the extrusion of a mixture of PET, epoxy resin, catalyst consisting of imidazole, derivatives of imidazole or mixtures thereof plus a blowing agent, wherein the homopolymerization reaction of the epoxy phase is performed in the extruder, upstream of...

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Hauptverfasser: BRESSAN RAFFAELA, PETERSSON EVA-LOTTA MAGDALENA, ALIPERTA LUIGI, LAURI LEONE
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creator BRESSAN RAFFAELA
PETERSSON EVA-LOTTA MAGDALENA
ALIPERTA LUIGI
LAURI LEONE
description A process for the production of PET foams includes the extrusion of a mixture of PET, epoxy resin, catalyst consisting of imidazole, derivatives of imidazole or mixtures thereof plus a blowing agent, wherein the homopolymerization reaction of the epoxy phase is performed in the extruder, upstream of the introduction of the blowing agent. Compared to the methods of the known art, a process according to the invention offers the advantage of providing a stable PET foam, in which the structure of the polymer chains is kept unaltered. The system therefore has viscoelasticity characteristics which allow the PET/epoxy homopolymer to receive the expanding action of the blowing agent, as far as the innermost and deepest layers of foam also even if they have a significant thickness.
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title PROCEDIMENTO PER LA PRODUZIONE DI SCHIUME DI PET E SCHIUME DI PET OTTENUTE CON QUESTO PROCEDIMENTO
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