I-Polyimide fiber, eyaziwa nangokuthi i-P84 fibre, iyifayibha engamelana nokushisa enokumelana okuhle kakhulu nezinga lokushisa eliphezulu.Ku-300 ℃ amahora angu-100, izinga lokugcina amandla li-50%, ubude buncishiswa ngo-5% ~ 10%, futhi izinga lokuchayeka lingu-250 H, izinga lokugcinwa kwamandla elingu-45%, ukuqina okuhle kakhulu kwe-dimensional ku-275 ℃, akukho ukuncibilika. , izinga lokushisa lengilazi elingu-315℃, likhipha igesi elincane eliyingozi kuphela lapho libola.Ingakwazi ukugijima ngokuqhubekayo ku-260 ℃ futhi izinga lokushisa elisebenza ngokushesha lingafinyelela ku-280 ℃.