Title

A Novel Approach To Enhance Fire Retardancy Of Fiber-Reinforced Polymer Matrix Composites

Keywords

Carbon nanofiber; Cone calorimeter; Fiber-reinforced composites; Fire retardancy; Nanoclay; Polymeric nanocomposites

Abstract

In this study, carbon nanofiber (CNF) and Cloisite Na+ clay were combined to manufacture freestanding clay/carbon nanofiber sheets (CCNS) through the high-pressure filter system. Two kinds of CCNS, CCNS5 and CCNS20, were prepared containing 5 wt% and 20 wt% of clay, respectively. These CCNS were integrated onto the surfaces of fiber-reinforced laminated composites. Their fire retardancy was evaluated with cone calorimeter under an external radiant heat flux of 50 Kw/m2 and their residues were analyzed with scanning electron microscopy (SEM) and thermal gravimetric analyses (TGA). The results showed that their heat release rate (HRR) was significantly reduced due to the existence of the pre-formed CCNS on the surfaces of composites. The clay concentration had no obvious effect on their HRR under our work conditions. However, clay concentration should be high enough to keep perfect CNF networks. In addition, the existence of CNF could reinforce clay layer into one entire shield against the damage of air bubbling and melt-flow of pyrolysis products of polymer resin in the vicinity of sample surface. Therefore, CCNS could serve as a barrier to O2 supply, the pyrolysis gases or the transmitted flux to the underlying polymer.

Publication Date

12-18-2008

Publication Title

International SAMPE Symposium and Exhibition (Proceedings)

Volume

52

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

57649106115 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/57649106115

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