手性聚合物网络/胆甾相液晶复合材料的制备及宽波反射性能研究

通过在聚合物网络/胆甾相（Ch相）液晶复合材料中洗出Ch相液晶等小分子，在液晶复合材料中构筑手性聚合物网络。在距离手性聚合物网络较近的区域，通过手性聚合物网络的记忆效应诱导再填充液晶反射原Ch相液晶反射波长的入射光【初始螺距（P）】，在距离手性聚合物网络较远的区域，再填充Ch相液晶本身反射另一波长的入射光（另一P），通过手性聚合物网络不同区域对液晶锚定作用的不同及液晶在复合材料中的扩散作用，实现在Ch相液晶复合材料中形成P的非均匀分布，进一步通过再填充Ch相液晶复合材料中聚合单体的聚合，将Ch相液晶复合材料的P非均匀分布固定，制备Ch相液晶宽波反射复合材料。阐明Ch相液晶复合材料中聚合物网络微观结构、P微区分布、构成复合材料的向列相液晶、聚合单体和手性化合物的结构及组成等因素对Ch相液晶复合材料宽波反射性能的影响规律，并揭示相关机理，以制备可适用于不同反射波宽要求的智能化液晶宽波反射材料。

Chiral polymer network will be constructed in the polymer network/cholesteric liquid crystal composites by washing out the cholesteric liquid crystal. In the region closer to the chiral polymer network, the incident light will be reflected at the reflected wavelength of the original cholesteric liquid crystal by the memory effect of the chiral polymer network (initial pitch), and in the region farther to the chiral polymer network, the incident light will be reflected at another reflected wavelength of the refilled cholesteric liquid crystal (another pitch), the non-uniform distribution of pitch in cholesteric liquid crystal composites will be formed because of the difference of the anchoring effect of different regions of chiral polymer network and the diffusion of liquid crystal in composites, and then the non-uniform distribution of pitch in cholesteric liquid crystal composites will be fixed by the polymerization of the polymerizable monomer in cholesteric liquid crystal composites, and the cholesteric liquid crystal broadband reflective materials will be prepared. The influences of the microstructures of chiral polymer network, the microdistributions of pitch, the chemical structures and the compositions of nematic liquid crystal, polymerizable monomer and chiral compounds on the broadband reflective properties of cholesteric liquid crystal composites will be investigated, and the correlative mechanisms will be revealed, and the intelligent liquid crystal broadband reflective materials that can be applied to different reflective wave-width requirement will be prepared.