Self-assembled nano-phase silane-based particle coating was prepared through sol-gel technique.Tetramethoxysilane and 3-glycidoxypropyltrimethoxysilane were used as precursors for the self-assembled sol-gel coatings.T...Self-assembled nano-phase silane-based particle coating was prepared through sol-gel technique.Tetramethoxysilane and 3-glycidoxypropyltrimethoxysilane were used as precursors for the self-assembled sol-gel coatings.The silane colloidal particle size was analyzed by laser particle size measurement.The results indicate that the particle size is in nano-scale and the diameter of particles deceases with increasing dilution times.Gel permeation chromatography proves that the relative molecular mass of macromolecule in a referenced sol solution is 1220-1240 amu.A simulation model was proposed to study the siloxane structure.Fourier transform infrared spectra of solution and film prove the disappearing of epoxy bond.The results of solid-state 13C and 29Si nuclear magnetic resonance experiments indicate the formation of Si-O-Si network.Potentiodynamic analysis shows that the self-assembled coating has excellent corrosion resistance.Salt fog tests prove that 2-methyl piperidine as inhibitor significantly improves the corrosion resistance of the self-assembled coating.展开更多
Novel composites were synthesized using AEPTES （3-（2-aminoethylamino）propyltriethoxysilane）, which behaves as an excellent dispersant for MWCNTs （multiwall carbon nanotubes） in polymer film matrices. The thickne...Novel composites were synthesized using AEPTES （3-（2-aminoethylamino）propyltriethoxysilane）, which behaves as an excellent dispersant for MWCNTs （multiwall carbon nanotubes） in polymer film matrices. The thickness of the synthesized nanocomposite films ranged from 50 to 70 lam, having well-dispersed MWCNTs. Increasing the AEPTES concentration from 0.0196 to 0.0300 M, increased the amine content and the dispersion of MWCNTs. The film synthesized at 0.0300 M AETPES exhibited the greatest degree of dispersion among the three samples, which is consistent with a self-assembled silane group interacting with the MWCNT surface.展开更多
基金Project(51001109) supported by the National Natural Science Foundation of ChinaProjects(2009BAE70B01, 2009BAE70B02) supported by the National Key Technology R&D Program of China
文摘Self-assembled nano-phase silane-based particle coating was prepared through sol-gel technique.Tetramethoxysilane and 3-glycidoxypropyltrimethoxysilane were used as precursors for the self-assembled sol-gel coatings.The silane colloidal particle size was analyzed by laser particle size measurement.The results indicate that the particle size is in nano-scale and the diameter of particles deceases with increasing dilution times.Gel permeation chromatography proves that the relative molecular mass of macromolecule in a referenced sol solution is 1220-1240 amu.A simulation model was proposed to study the siloxane structure.Fourier transform infrared spectra of solution and film prove the disappearing of epoxy bond.The results of solid-state 13C and 29Si nuclear magnetic resonance experiments indicate the formation of Si-O-Si network.Potentiodynamic analysis shows that the self-assembled coating has excellent corrosion resistance.Salt fog tests prove that 2-methyl piperidine as inhibitor significantly improves the corrosion resistance of the self-assembled coating.
文摘Novel composites were synthesized using AEPTES （3-（2-aminoethylamino）propyltriethoxysilane）, which behaves as an excellent dispersant for MWCNTs （multiwall carbon nanotubes） in polymer film matrices. The thickness of the synthesized nanocomposite films ranged from 50 to 70 lam, having well-dispersed MWCNTs. Increasing the AEPTES concentration from 0.0196 to 0.0300 M, increased the amine content and the dispersion of MWCNTs. The film synthesized at 0.0300 M AETPES exhibited the greatest degree of dispersion among the three samples, which is consistent with a self-assembled silane group interacting with the MWCNT surface.
