含苝酰亚胺聚氨酯的合成、力学特性及近红外反射性能

打开文本图片集

Abstract：Doping perylene diimide（PDI） into a polymer matrix is a simple strategy to prepare near-infrared（NIR） reflective materials，but the mechanicalpropertiesand NIRreflectance propertiesare significantlycompromised due to macro-phase separation.In this study，anovel polymer（denotedasPU-PDI）with intrinsic NIRreflective properties was synthesizedbycovalent incorporationof PDIunits intopolyurethane chains.Its photophysical characteristics，mechanical propertyand NIRreflectance propertyare investigated indetail.The results showthatcovalent incorporation reduces thesevere aggregation of PDIunits，thereby endows PU-PDI with excellent mechanical property. The elongation atbreak ofPU-PDI can reach more than 700% ，and thebreakingstrengthis34.11MPa.Moreover， compared tothe blending system，PU-PDIposssses enhancedNIRreflectionabilitydue tothe betterdispersionof PDI units.

KeyWords：perylene diimide；polyurethane；near-infrared（NIR）reflectance CLCnumber：O482.31 Documentcode：A DOI： 10.37188/CJL.20250043 CSTR：32170.14.CJL.20250043

摘要：在聚合物基体中掺杂苝酰亚胺（PDI）是制备近红外（NIR）反射材料的常用方法，但PDI与聚合物的宏观相分离通常会严重影响材料的力学性能和近红外反射性能。（剩余16852字）