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Polymers 2016, 8(7), 267; doi:10.3390/polym8070267

Application of Flame-Retardant Double-Layered Shell Microcapsules to Nonwoven Polyester

1
University Lille Nord de France, F-59000 Lille, France
2
Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT)/Laboratoire Génie des Matériaux Textiles (GEMTEX), 2, allée Louise et Victor Champier, F-59100 Roubaix, France
*
Author to whom correspondence should be addressed.
Academic Editor: Baljinder Kandola
Received: 8 June 2016 / Revised: 5 July 2016 / Accepted: 18 July 2016 / Published: 22 July 2016
(This article belongs to the Special Issue Recent Advances in Flame Retardancy of Textile Related Products)
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Abstract

A microencapsulated flame retardant was used in order to produce a flame retardant nonwoven substrate. Melamine-formaldehyde polymer-shell microcapsules, containing Afflamit® PLF 280 (resorcinol bis(diphenyl phosphate)) as the core substance, were coated by an outer thermoplastic wall (polystyrene (PS) or poly(methyl methacrylate)), before being applied to a core/sheet-type bi-component PET/co-PET spunbond nonwoven substrate using impregnation. The outer wall of the microcapsules was heated to the softening temperature of the thermoplastic shell in order to be bonded onto the textile fibres. The thermal stability of the microcapsules was examined using thermogravimetric analysis. The textile samples were observed with a scanning electron microscope, and the flame retardancy performance was evaluated using the NF P92-504 standard. The results show that the composition of the outer polymeric shell affected the thermal stability of the microcapsules, since the particles with a PS shell are more stable. Furthermore, the microcapsules were more located at the nonwoven surface without affecting the thickness of the samples. Based on the results of the NF P92-504 test, the flame spread rate was relatively low for all of the tested formulations. Only the formulation with a low content of PS was classified M2 while the others were M3. View Full-Text
Keywords: microcapsules; nonwoven; resorcinol bis(diphenyl phosphate); flame retardant; padding microcapsules; nonwoven; resorcinol bis(diphenyl phosphate); flame retardant; padding
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MDPI and ACS Style

Butstraen, C.; Salaün, F.; Devaux, E.; Giraud, S.; Vroman, P. Application of Flame-Retardant Double-Layered Shell Microcapsules to Nonwoven Polyester. Polymers 2016, 8, 267.

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