Polyimide yarn is made of polyimide fiber. The fiber is with excellent properties of high temperature resistance, insulation, flame retardant, anti-radiation, anti- UV, anti-bacteria and solvent resistance. The yarn can be used in the area of special protection and function material. The general index of polyimide fiber is as follows,
Fineness   0.9~5 dtex,

Density     1.41 g/cm3 ;

Breaking strength ＞4.0 cN/dtex;

Elongation at break 10~30%;

Continuous use temperature 260℃;

Decomposition temperature 560℃;

Limiting oxygen index (LOI) 38%;

Acid resistance and UV radiation resistance.