JIANG Xiaolong, MU Yongfeng, LIU Zhihui, et al. Investigation of fluorinated polyimide and UiO—66 composite humidity-sensitive materials[J]. 2026, 45(3): 128-133.
JIANG Xiaolong, MU Yongfeng, LIU Zhihui, et al. Investigation of fluorinated polyimide and UiO—66 composite humidity-sensitive materials[J]. 2026, 45(3): 128-133.DOI:
The escalating need for high-performance humidity sensors drives the rapid development of humidity-sensitive materials.A new type of composite humidity-sensitive material is developed by combining fluorinated polyimide (FPI) polymer with modified UiO—66 (a type of metal-organic framework(MOF)material)
and capacitive humidity sensors with modified UiO—66 and FPI composite materials as the dielectric are prepared via MEMS technology.Results show that the FPI—2 sensor exhibits high sensitivity (0.85pF/%RH)
low hysteresis (0.78%RH)
and good linearity (
R
2
=0.9808) within the relative humidity range of 10%~90%RH
and maintains good stability with a 60—day test period.