A kind of ultra-high conductive graphene polyester fiber and preparation method thereof

Abstract

The invention provides a superhigh-conductivity graphene polyester fiber, and also provides a preparation method of the superhigh-conductivity graphene polyester fiber. The superhigh-conductivity graphene polyester fiber has conductivity of 7.8 to 8.5*10<-7>S / cm, and break strength of 5.7 to 6.0cN / dtex. The preparation method comprises the following step of preparing a graphene powder dispersing liquid: dispersing graphene powder into a water solution containing sodium silicate and sodium metasilicate, adding 4 to 7% of dispersing agent, adjusting the temperature to 45 to 50 DEG C, and stirring for 30min, so as to obtain the graphene powder dispersing liquid. The prepared graphene polyester fiber has the advantages that the content of graphene particles coated by silicate gel is 3 to 8.5%, the moisture regain of the fiber is high, and the conductivity of the fiber is high. The preparation method of the graphene polyester fiber has the advantages that the compatibility between the graphene and the polyester is good, and the graphene particles coated by the silicate gel are uniformly distributed in the finished product of the fiber.

Description

technical field [0001] The invention relates to a polyester fiber, in particular to an ultra-high conductive graphene polyester fiber and a preparation method thereof, belonging to the technical field of textiles. Background technique [0002] Polyester is an important variety of synthetic fibers and is the trade name of polyester fibers in my country. It is a fiber-forming high polymer prepared from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reactions- Polyethylene terephthalate (PET), a fiber made by spinning and post-processing. Polyester is the world's largest and most widely used synthetic fiber variety, and polyester accounts for more than 60% of the world's synthetic fiber production. [0003] Graphene has high conductivity and is the material with the smallest resistivity in the world. Graphene can be added to fiber materials to improve the conductivity...

AI Technical Summary

Problems solved by technology

[0008] (1) In order to improve the compatibility between graphene and polyester polymer, graphene is modified first, or graphene is modified by mixing graphene with a modified compatibilizer, and the modified Although graphene will improve the dispersion, hydrophilicity and compatibility of graphene with polymers, at the same time, due to the access of oxygen atoms, the delocalized large π bonds will be destroyed, thus losing the original high Electron conductivity, which greatly reduces the conductivity of graphene

[0009] (2) The graphene added to the polyester fiber is granular, the distribution of graphene in the polyester fiber is discontinuous, and the moisture regain of the polyester fiber itself is low, only 0.5%, resulting in relatively low conductivity of the graphene fiber. Difference