Polyimides containing a backbone with at least one nanoparticle component and made from oligomers having endcaps that are difunctional or a mix of di- and monofunctionality are provided. The endcaps may be nadic or phenylethynyl. The backbone may be wholly inorganic or made from a mixture of inorganic and organic groups. The oligomers may be created in-situ using standard polymerization of monomeric reactants chemistry using a solvent or may be provided as a pre-imidized compound that may be either a solid or liquid. It is believed that the nanoparticle component of the polymer backbone provides superior thermo-oxidative stability verses unmodified organic backbones. It is further believed that providing difunctional or a mixture of di- and monofunctional endcaps allows for increased crosslinking to provide improved strength and stiffness verses wholly monofunctional endcapped oligomers for polyimides. The nanoparticle is part of the backbone of the polymer and not solely a pendant group.
聚
酰亚胺含有至少一种纳米颗粒成分的骨架,由具有双官能团或双官能团与单官能团混合的端盖的低聚物制成。端帽可以是纳丁基或
苯乙炔基。骨架可以是完全无机的,也可以由无机基团和有机基团混合而成。低聚物可以利用单体反应物的标准聚合
化学反应,使用溶剂在原位生成,也可以作为预激发化合物提供,可以是固体或液体。据信,与未改性的有机骨架相比,聚合物骨架中的纳米颗粒成分具有更高的热氧化稳定性。此外,与聚
酰亚胺的全单官能团端帽低聚物相比,提供双官能团或双官能团与单官能团端帽的混合物可增加交联度,从而提高强度和刚度。纳米粒子是聚合物骨架的一部分,而不仅仅是一个悬挂基团。