An Investigation on the Flammability of Halogen-Free Fire Retardant PP–APP

An Investigation on the Flammability of Halogen-Free Fire Retardant PP–APP–EG Systems

Published:2004-09 Issue:5 Volume:22 Page:367-377
ISSN:0734-9041
Container-title:Journal of Fire Sciences
language:en
Short-container-title:Journal of Fire Sciences

Author:

Wei Ping¹,Li Haixing,Jiang Pingkai,Yu Haiyang¹

Affiliation:

1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China

Abstract

Both natural graphite (NG) and home-made expandable graphite (EG) were blended with polypropylene (PP) and intumescent flame retardant (IFR) by a melt process. The resulting composites contain filler of 1–5 phr (parts per hundred parts of PP–IFR). The limiting oxygen index (LOI) and thermal gravimetric analysis (TGA) were employed for the study of fire retardance. It shows that the incorporation of EG into systems of PP–IFR would impart flame retardance and thermal stability to the virgin formulation PP–IFR with optimal synergy at a loading of 2 phr, rather than the NG. The mechanical properties of the three systems and fracture surface morphology by SEM were also described.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Link

http://journals.sagepub.com/doi/pdf/10.1177/0734904104042437

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