高折射率聚酰亚胺研究进展

Research Advances in High Refractive Index Polyimides

聚酰亚胺作为一种高性能的功能材料在各个领域应用广泛,但较低的折射率限制了其在光学领域的应用。为了有效提高聚酰亚胺的折射率,许多学者研究了多种方法。本文介绍了国内外的研究团队制备高折射率聚酰亚胺的最新研究进展,总结了提高聚酰亚胺折射率的方法主要分为以下几种:在聚酰亚胺的主链引入硫原子;掺杂无机粒子进行杂化改性;开创新的合成工艺,通过详细论述上述几种方法的合成路线以及所得产物的性能,指出了合成高折射率聚酰亚胺的总趋势。

Polyimides are a kind of high-performance functional material which is widely used in various fields, but low refractive index limits its application in the field of optics. By introducing aromatic ring substituents, sulfur atom in the main chain and inorganic particles hybrid modification method many researcher can effectively improve the refractive index of the polyimides. This article describes the latest research progress both in domestic and overseas that some research team prepared high refractive index of the polyimides, then concludes that the method of increasing the refractive index of polyimide can be divided into the following ways： introducing sulfur atom into the main chain of polyimide; mixing the inorganic particles to modify the polyimide; developing a new synthesis route. The synthetic route of the several methods and the properties of the resulting products were reviewed and point out the general tendency of the synthesis of high refractive index polyimides.