The nano TiO 2/Poly(butyl acrylate) composite film was prepared by in situ polymerization initiated by UV illustration and characterized by FTIR, XPS and HRTEM. The friction behavior of the composite film in sliding a...The nano TiO 2/Poly(butyl acrylate) composite film was prepared by in situ polymerization initiated by UV illustration and characterized by FTIR, XPS and HRTEM. The friction behavior of the composite film in sliding against AISI 52100 steel was examined on a DF PM friction coefficient measurement apparatus. The results indicated that the TiO 2 nanolines were dispersed in the poly(butyl acrylate) network. The film exhibites a good antiwear property.展开更多
The compatibility and dynamics of latex bidirectional/nterpenetrating polymer networks (LBIPNs) and latex IPN(LIPN) of poly(vinyl acetate)(PVAc) and poly (butyl acrylate )(PBA) are investigated by means of dynamic mec...The compatibility and dynamics of latex bidirectional/nterpenetrating polymer networks (LBIPNs) and latex IPN(LIPN) of poly(vinyl acetate)(PVAc) and poly (butyl acrylate )(PBA) are investigated by means of dynamic mechanical spectroscopy (DMS) and nuclear magnetic resonance (NMR) techniques. The results of DMS show that the compatibility of the LBIPNs is much better than that of the corresponding LIPN and depends to, a large extent on the distribution of PVAc both in the core and in the shell. The results of NMR measurements indicate that the rotational correlation times of the side- groups of PBA in the LBIPN are longer than those in the LIPN. The relation between the ^(13)C linewidths of PBA and temperature is also discussed.展开更多
文摘The nano TiO 2/Poly(butyl acrylate) composite film was prepared by in situ polymerization initiated by UV illustration and characterized by FTIR, XPS and HRTEM. The friction behavior of the composite film in sliding against AISI 52100 steel was examined on a DF PM friction coefficient measurement apparatus. The results indicated that the TiO 2 nanolines were dispersed in the poly(butyl acrylate) network. The film exhibites a good antiwear property.
文摘The compatibility and dynamics of latex bidirectional/nterpenetrating polymer networks (LBIPNs) and latex IPN(LIPN) of poly(vinyl acetate)(PVAc) and poly (butyl acrylate )(PBA) are investigated by means of dynamic mechanical spectroscopy (DMS) and nuclear magnetic resonance (NMR) techniques. The results of DMS show that the compatibility of the LBIPNs is much better than that of the corresponding LIPN and depends to, a large extent on the distribution of PVAc both in the core and in the shell. The results of NMR measurements indicate that the rotational correlation times of the side- groups of PBA in the LBIPN are longer than those in the LIPN. The relation between the ^(13)C linewidths of PBA and temperature is also discussed.
