A modification of natural rubber latex（NRL） grafted with perfluoroalkylethyl methacrylate（Zonyl TM） under sensitizer butyl acrylate（BA） by（）60Co gamma ray emulsion copolymerization was presented in this paper....A modification of natural rubber latex（NRL） grafted with perfluoroalkylethyl methacrylate（Zonyl TM） under sensitizer butyl acrylate（BA） by（）60Co gamma ray emulsion copolymerization was presented in this paper.The components of the NRL films were studied by Fourier-transfer infrared（FT-IR） spectrometry.The contact angle（CA） analysis showed that the NRL films exhibited a high water contact angle after modification,which changed of 81.1 degree to 110 degree.The surface analysis of X-ray photoelectron spectroscopy（XPS） revealed that the fluorinated segments were preferentially self-organized at the film-air surface.Furthermore,the effect of the Zonyl TM and BA contents on the properties of NRL films was discussed by CA in detail.It showed that the NRL films with 0.94 wt% Zonyl TM and 2.77 wt% or 4.55 wt% BA had better modification effect than the others.展开更多
为了解决发动机扭矩激励带来的振动噪音及路面激励带来的胎噪等问题,进而提高汽车的噪声、振动和声振粗糙度(noise,vibration and harshness,NVH)性能,将隔振系统应用在汽车的动力总成系统和行驶系统之中。对隔振系统的结构性差异进行...为了解决发动机扭矩激励带来的振动噪音及路面激励带来的胎噪等问题,进而提高汽车的噪声、振动和声振粗糙度(noise,vibration and harshness,NVH)性能,将隔振系统应用在汽车的动力总成系统和行驶系统之中。对隔振系统的结构性差异进行了研究,利用仿真力学分析软件Analysis作为平台,对比分析了普通橡胶隔振器与液阻橡胶隔振器的性能特点,以振动加速度作为主要评价因子,选择了两款常见车型进行了对比测试。结果表明,液阻橡胶隔振器在受到不平路面激励时对衰减方向盘扭振的效果要优于普通橡胶隔振器,两种车型的振动加速度峰值分别下降了62%和28%;液阻橡胶隔振器具有更好的动刚度特性、阻尼角特性和振动加速度特性。展开更多
文摘A modification of natural rubber latex（NRL） grafted with perfluoroalkylethyl methacrylate（Zonyl TM） under sensitizer butyl acrylate（BA） by（）60Co gamma ray emulsion copolymerization was presented in this paper.The components of the NRL films were studied by Fourier-transfer infrared（FT-IR） spectrometry.The contact angle（CA） analysis showed that the NRL films exhibited a high water contact angle after modification,which changed of 81.1 degree to 110 degree.The surface analysis of X-ray photoelectron spectroscopy（XPS） revealed that the fluorinated segments were preferentially self-organized at the film-air surface.Furthermore,the effect of the Zonyl TM and BA contents on the properties of NRL films was discussed by CA in detail.It showed that the NRL films with 0.94 wt% Zonyl TM and 2.77 wt% or 4.55 wt% BA had better modification effect than the others.
文摘为了解决发动机扭矩激励带来的振动噪音及路面激励带来的胎噪等问题,进而提高汽车的噪声、振动和声振粗糙度(noise,vibration and harshness,NVH)性能,将隔振系统应用在汽车的动力总成系统和行驶系统之中。对隔振系统的结构性差异进行了研究,利用仿真力学分析软件Analysis作为平台,对比分析了普通橡胶隔振器与液阻橡胶隔振器的性能特点,以振动加速度作为主要评价因子,选择了两款常见车型进行了对比测试。结果表明,液阻橡胶隔振器在受到不平路面激励时对衰减方向盘扭振的效果要优于普通橡胶隔振器,两种车型的振动加速度峰值分别下降了62%和28%;液阻橡胶隔振器具有更好的动刚度特性、阻尼角特性和振动加速度特性。
