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Mechanical properties, chemical and aging resistance of natural rubber filled with nano‐Al 2 O 3
Author(s) -
Fu JiFang,
Chen LiYa,
Yang Hui,
Zhong QingDong,
Shi LiYi,
Deng Wei,
Dong Xing,
Chen Yi,
Zhao GuoZhang
Publication year - 2012
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.22162
Subject(s) - materials science , natural rubber , ultimate tensile strength , elongation , composite material , tearing , modulus , nanocomposite , nano , scanning electron microscope , tensile testing , reinforcement , young's modulus , tear resistance , nanoparticle , nanotechnology
Al 2 O 3 nanoparticles were introduced to natural rubber (NR) to investigate its reinforcement effect on filled NR vulcanizates. The results show that Nano‐Al 2 O 3 /NR nanocomposites exhibit significantly improved tensile strength, elongation at break, modulus, and tearing strength. Scanning electron microscopy analyses indicate that nanoparticles dispersed in NR matrix at nanoscale and show nano‐reinforcement effect on NR vulcanizates. The aging resistances of filled NR vulcanizates improve. After aging test, tensile strength, tearing strength, and modulus improved, and elongation at break decreased. These attribute to the crosslink maturation reactions, which result in the conversion of polysulfidic linkages into disulfidic and monosulfidic ones. The acid and alkaline resistances of nano‐Al 2 O 3 ‐filled NR vulcanizates improve compared with that of unfilled NR systems. After acid and alkaline test, tensile strength and elongation at break improve, and modulus decrease. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers