Premium
Alumina nanoflake‐coated graphene nanohybrid as a novel flame retardant filler for polypropylene
Author(s) -
Yuan Bihe,
Chen Gongqing,
Zou Yanyan,
Shang Sheng,
Sun Yaru,
Yu Bin,
He Song,
Chen Xianfeng
Publication year - 2019
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4689
Subject(s) - materials science , graphene , charring , fire retardant , polypropylene , char , thermal stability , composite number , combustion , chemical engineering , composite material , pyrolysis , nanotechnology , organic chemistry , chemistry , engineering
γ‐Al 2 O 3 nanoflakes are decorated on the surface of graphene nanosheets by hydrothermal method. The chemical structures, composition, and morphology of the graphene nanohybrid are characterized. Alumina nanoflake‐coated graphene nanohybrid is incorporated into polypropylene (PP) matrix by master batch‐based melt mixing method. The effects of alumina‐graphene nanohybrid on the thermal stability and combustion behavior of PP are investigated. More char residue is left for PP composite containing alumina‐graphene nanohybrid. Peak heat release rate of pure PP is greatly decreased by this nanohybrid, corresponding to 30.6% reduction. Fire safety of PP is considerably enhanced. Flame retardant mechanisms are concluded based on the combustion results and char analysis. The barrier effect of graphene and catalytic charring actions of γ‐Al 2 O 3 nanoflakes make the contribution to the enhanced flame retardant properties.