▎ 摘　　要

NOVELTY - Preparing graphene fiber, comprises: uniformly dispersing graphene oxide aqueous solution suspension; using injector to inject graphene oxide aqueous solution suspension into a glass tube, and sealing the two ends of the glass tube; baking in an oven to obtain the prefabricated graphene fiber matched with the geometrical shape of the pipeline; and removing out the prefabricated graphene fiber from the broken glass tube, and drying in air to obtain graphene fiber. USE - The graphene fiber is useful in graphene fiber temperature sensor for measuring temperature (all claimed), used in household, industry and medical treatment. ADVANTAGE - The method enables to prepare graphene fiber that improves the precision of the temperature measurement, using graphene fiber temperature measuring sensor has high temperature measuring sensitivity, reduces the error range, and improves the measuring precision in the low temperature environment. The graphene fiber changes more rapidly at low temperature resistance, which shows that graphene fiber is very sensitive to temperature change, and the temperature lower sensitivity is stronger, which is very suitable for temperature detection in a low-temperature environment. DESCRIPTION OF DRAWING(S) - The drawing shows a process flow diagram of graphene fiber preparation method. (Drawing includes non-English language text).