A novel silicon-aluminum oxides (Si-Al) nanotubes with length ranging from 500 to 1000 nm were introduced to fabricate the styrene-butadiene rubber (SBR)/Si-Al nanotube binary nanocomposites. Scanning electron microscope observation showed the Si-Al nanotubes up to 20 parts per hundred parts of rubber (phr) loading level were dispersed well in SBR matrix. Mechanical properties tests, thermogravimetry analysis and dynamic mechanical thermal analysis revealed that the Si-Al nanotubes have the effects on improving shore A hardness, tensile strength, tear strength, initial decomposition temperature, and storage modulus while lower the maximum loss factor (tan delta) of the SBR/Si-Al nanotube binary nanocomposites. FTIR spectra analysis showed that new SiAO bond was generated between the hydroxyl group of Si-Al nanotube and the coupling reagent Si69. (C) 2011Wiley Periodicals, Inc. J Appl Polym Sci 120: 3196-3203, 2011