Mechanical properties, chemical and aging resistance of natural rubber filled with nano-Al sub(2)O sub(3)

Al sub(2)O sub(3) nanoparticles were introduced to natural rubber (NR) to investigate its reinforcement effect on filled NR vulcanizates. The results show that Nano-Al sub(2)O sub(3)/NR nanocomposites exhibit significantly improved tensile strength, elongation at break, modulus, and tearing strength...

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Bibliographic Details
Published in:Polymer composites 2012-03, Vol.33 (3), p.404-411
Main Authors: Fu, Ji-Fang, Chen, Li-Ya, Yang, Hui, Zhong, Qing-Dong, Shi, Li-Yi, Deng, Wei, Dong, Xing, Chen, Yi, Zhao, Guo-Zhang
Format: Article
Language:English
Subjects:
Breaking
Elongation
Nanoparticles
Nanostructure
Natural rubber
Strength
Tearing
Tensile strength
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Summary:Al sub(2)O sub(3) nanoparticles were introduced to natural rubber (NR) to investigate its reinforcement effect on filled NR vulcanizates. The results show that Nano-Al sub(2)O sub(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 sub(2)O sub(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. copyright 2012 Society of Plastics Engineers
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.22162