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Modified phenolic resin with aluminium and rectorite: Structure, characterization, and performance
Author(s) -
Wang Keyi,
Gu Huazhi,
Huang Ao,
Ke Changmei,
Zhang Meijie,
Luo Zhian,
Fu Lvping
Publication year - 2020
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.25723
Subject(s) - materials science , pyrolytic carbon , aluminium , ultimate tensile strength , composite material , thermal decomposition , chemical engineering , pyrolysis , organic chemistry , chemistry , engineering
Phenolic resin is an important binder for refractory ceramics. Herein, aluminum and organic rectorite were employed to improve the antioxidant activity of phenolic resin. X‐ray diffraction revealed that the silicate layers of phenolic resin exfoliated rectorite were uniformly dispersed in the modified phenolic resin (MPF) matrix. Moreover, TEM revealed that the peeled silicate nanoparticles from rectorite were well distributed without clustering. The structure of the MPF resin was also analyzed by infrared spectroscopy and nuclear magnetic resonance. The results showed that the strength of the ether bridge of MPF resin with aluminum and rectorite considerably decreased than that of pure phenolic resin. The MPF resin was anhydrous and had AlO bonds to link the benzene rings. Pyrolytic carbon experiments revealed that the decomposition temperature of the MPF resin was 759.2°C, which indicated that it had a better oxidation resistance and bonding strength than those of pure phenolic resin. The incorporation of aluminum and rectorite improved thermal performance of the phenolic resin, and enhanced mechanical performance of the MgOC refractory.