| Tetraethoxysilane (TEOS), methyl triethoxysilane (MTES) and caporlactam (CPL) were used to synthesize hydrophobic polyamide 6 (PA6)/SiO2 organic-inorganic hybrid material by in-situ and anionic ring-opening polymerization method. Fourier Transform Infrared Spectroscopy (FTIR) spectra, X-ray diffraction analysis (XRD), Differential scanning calorimetry (DSC), X-ray photoelectron spectroscopy (XPS) were carried out to characterize and analyze hydrophobic materials. The mechanical properties of PA6/SiO2 hybrid materials were tested.The hydrophobic mechanism of PA6/SiO2 hybrid materials were investigated. Moreover, the effects of mechanical properties,hydrophobic properties and crystallization behaviors with different SiO2wt% of silica sol were also explored. The results indicated that the outstretched si-methyl groups on the surface of PA6/SiO2 hybrid material contributed to hydrophobicity.The PA6 and the hydrophobic PA6/SiO2 hybrid materials synthesized in this paper were both of a crystal form, the melting point of PA6/SiO2 hybrid material was slightly higher than that of PA6. Tensile strength,bending strength and impact strength of PA6/SiO2 hybrid material were slightly enhancer than that of PA6. |
