基于AVIDM框架的卫星设计集成技术研究

在分析了并行工程特点的基础上,对产品数据管理技术进行了阐述,结合实际工作对基于AVIDM框架的卫星设计集成系统建设及在卫星型号产品中推广PDM技术的有关工作进行了详细论述,提出了型号应用的不同层次及PDM实践中应注意解决的问题。     

Thermal Polymerization of Cyanate Ester-Benzoxazine：Study of a Functional Model Compound

A novel benzoxazine (BOZ) monomer is synthesized by a pot method with solvent-free to blend with cyanate ester (CE). A soluble intermediate is obtained after being cured for 20 h at 80 ℃. The two model compound and the blends are analyzed with the infrared radiation (IR)， nuclear magnetic resonance (NMR) spectroscopy， and differential scanning calorimetry (DSC). The results show that an intermediate of the iminocarbonate and BOZ structures is formed by the ring-open BOZ reacting with the cyanate groups and ring-unopened BOZ. Moreover， rearrangement and ring-opening occur in the postcure of the intermediate to form the alkyl isocyanurate structure with polybenzoxazine.