Premium
Effect of novel copolyamide charring agents on flame‐retarded polypropylene
Author(s) -
Yang Bin,
Liu Heng,
He Bobing,
Leng Jinhua,
Chen Xian
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22451
Subject(s) - charring , materials science , ammonium polyphosphate , fire retardant , polypropylene , limiting oxygen index , thermogravimetric analysis , polyamide , izod impact strength test , ultimate tensile strength , composite material , heat deflection temperature , differential scanning calorimetry , scanning electron microscope , cone calorimeter , combustion , chemical engineering , char , organic chemistry , chemistry , physics , engineering , thermodynamics
In this article, two novel copolyamide charring agents, ES‐6 and M‐170, were served as charring agents or synergist with ammonium polyphosphate (APP) and dipentaerythritol (DPER) for the flame‐retarded polypropylene (PP). The flame‐retardant system was characterized by limiting oxygen index (LOI), tensile strength, Izod impact strength, thermogravimetric analyses, differential scanning calorimeter (DSC), and scanning electron microscope (SEM). Compared with polyamide 6 (PA6), ES‐6 and M‐170 had better dispersion and compatibility in the PP matrix and enhanced mechanical properties. Meanwhile, as low melting point polyamides, ES‐6 and M‐170 could decrease processing temperature and effectively inhibit side reaction, especially the degradation of APP. In addition, the synergistic effect between ES‐6 and DPER was also investigated. The results showed that the synergistic system containing ES‐6 had better flame retardancy and mechanical performance in comparison with the system only using DPER or the system containing PA6. POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers