The production process of a monodispersed blue masterbatch for the coloration of the carpet filaments, constituted by a polyamide 6 (PA6) resin and a copper blue phthalocyanine pigment, was investigated and optimized. It was found that a compounding process based on three extrusions without any subsequent filtration was the best way to achieve a fine pigment dispersion within the PA6 matrix, with a filter pressure value reduction of 50% and a relative color strength increase of about 10% with respect to the standard production process (i.e. a single extrusion). Rheological tests, viscosity measurements and end groups analyses were used to determine the thermal stability of the prepared compounds. It was found that the triple extrusion promoted thermo-oxidative reactions. This innovative process setup can reduce the production waste, increasing the productivity and the quality of the final product without compromising the rheological properties of the monodispersed masterbatches.

Effects of the extrusion processes on the rheological, chemical, and coloration properties of a copper phthalocyanine-based masterbatch / Buccella, M; Dorigato, A; Rizzola, F; Caldara, M; Fambri, L. - In: THE JOURNAL OF ELASTOMERS AND PLASTICS. - ISSN 0095-2443. - STAMPA. - 50:4(2018), pp. 295-311. [10.1177/0095244317718597]

Effects of the extrusion processes on the rheological, chemical, and coloration properties of a copper phthalocyanine-based masterbatch

Buccella, M;Dorigato, A;Fambri, L
2018-01-01

Abstract

The production process of a monodispersed blue masterbatch for the coloration of the carpet filaments, constituted by a polyamide 6 (PA6) resin and a copper blue phthalocyanine pigment, was investigated and optimized. It was found that a compounding process based on three extrusions without any subsequent filtration was the best way to achieve a fine pigment dispersion within the PA6 matrix, with a filter pressure value reduction of 50% and a relative color strength increase of about 10% with respect to the standard production process (i.e. a single extrusion). Rheological tests, viscosity measurements and end groups analyses were used to determine the thermal stability of the prepared compounds. It was found that the triple extrusion promoted thermo-oxidative reactions. This innovative process setup can reduce the production waste, increasing the productivity and the quality of the final product without compromising the rheological properties of the monodispersed masterbatches.
2018
4
Buccella, M; Dorigato, A; Rizzola, F; Caldara, M; Fambri, L
Effects of the extrusion processes on the rheological, chemical, and coloration properties of a copper phthalocyanine-based masterbatch / Buccella, M; Dorigato, A; Rizzola, F; Caldara, M; Fambri, L. - In: THE JOURNAL OF ELASTOMERS AND PLASTICS. - ISSN 0095-2443. - STAMPA. - 50:4(2018), pp. 295-311. [10.1177/0095244317718597]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/197900
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