刚化技术是空间充气膨胀展开结构的一项关键技术。Adherent Technologies有限公司的技术人员首次提出了"可控刚化"(Rigidization On Command-ROC)技术概念,利用此技术ILC Dover公司制造了空间充气膨胀展开结构的示范支撑管件...刚化技术是空间充气膨胀展开结构的一项关键技术。Adherent Technologies有限公司的技术人员首次提出了"可控刚化"(Rigidization On Command-ROC)技术概念,利用此技术ILC Dover公司制造了空间充气膨胀展开结构的示范支撑管件。和传统的刚化技术相比可控刚化技术有许多优点,此技术可控、清洁,适用于空间的特殊环境。作者对空间充气膨胀展开结构刚化技术、可控刚化技术、可控刚化技术所用材料和紫外光(UV)固化复合材料进行了简单介绍。可控刚化技术可靠性高,固化后复合材料的机械性能好,为空间充气可膨胀展开结构提供一种急需的刚化技术,能满足充气膨胀展开结构多项任务的需要。展开更多
The photopolymerization kinetics of cycloaliphatic epoxide and oxetane with accelerators were investigated with Real-time Fourier transform infrared spectroscopy(RT-FTIR).The consumption rates of epoxy group and oxeta...The photopolymerization kinetics of cycloaliphatic epoxide and oxetane with accelerators were investigated with Real-time Fourier transform infrared spectroscopy(RT-FTIR).The consumption rates of epoxy group and oxetane group as a function of time were obtained by monitoring of the absorption peaks in the 789 cm-1 and 981 cm-1.The effect of accelerators type and the accelerating mechanism were discussed.In general,benzyl alcohol and its analogues with electron-donating substituents are useful accelerators for the cationic polymerization of cycloaliphatic epoxide and oxetane.Activated monomer mechanism and free-radical chain-induced decomposition of onium salt cationic photoinitiator account for the observed accelerating effect on the polymerization rate.展开更多
文摘刚化技术是空间充气膨胀展开结构的一项关键技术。Adherent Technologies有限公司的技术人员首次提出了"可控刚化"(Rigidization On Command-ROC)技术概念,利用此技术ILC Dover公司制造了空间充气膨胀展开结构的示范支撑管件。和传统的刚化技术相比可控刚化技术有许多优点,此技术可控、清洁,适用于空间的特殊环境。作者对空间充气膨胀展开结构刚化技术、可控刚化技术、可控刚化技术所用材料和紫外光(UV)固化复合材料进行了简单介绍。可控刚化技术可靠性高,固化后复合材料的机械性能好,为空间充气可膨胀展开结构提供一种急需的刚化技术,能满足充气膨胀展开结构多项任务的需要。
基金Natural Science Foundation of Hubei Province of China(No.2005ABA181)National Innovation Fund for Small Technology-based Firms(No.05C26214201059)
文摘The photopolymerization kinetics of cycloaliphatic epoxide and oxetane with accelerators were investigated with Real-time Fourier transform infrared spectroscopy(RT-FTIR).The consumption rates of epoxy group and oxetane group as a function of time were obtained by monitoring of the absorption peaks in the 789 cm-1 and 981 cm-1.The effect of accelerators type and the accelerating mechanism were discussed.In general,benzyl alcohol and its analogues with electron-donating substituents are useful accelerators for the cationic polymerization of cycloaliphatic epoxide and oxetane.Activated monomer mechanism and free-radical chain-induced decomposition of onium salt cationic photoinitiator account for the observed accelerating effect on the polymerization rate.
