Preparation method of graphene and ultrahigh-molecular-weight polyethylene composite fiber

Abstract

The invention provides a preparation method of a graphene and ultrahigh-molecular-weight polyethylene composite fiber. The preparation method comprises the following steps: S1: dispersing ultrahigh-molecular-weight polyethylene resin and a filler into a solvent by adopting a blending method to form a uniform resin dispersion solution; S2: adding graphene powder into a dispersant, heating the mixture to certain temperature, adding an emulsifier for emulsification, and obtaining a graphene dispersion solution; S3: adding the graphene dispersion solution into the resin dispersion solution, and stirring and heating the mixed solution to obtain a spinning solution; S4: performing spinning, precursor fiber stewing and thermal stretching on the spinning solution, thus obtaining the graphene and ultrahigh-molecular-weight polyethylene composite fiber. According to the preparation method provided by the invention, the intensity of the ultrahigh-molecular-weight polyethylene fiber is enhanced byadding a filling material and graphene into ultrahigh-molecular-weight polyethylene fiber, so that the final intensity is up to 30 to 45 cN / dtex; in addition, the composite fiber further has excellent properties of ultraviolet resistance, cutting resistance and the like.

Description

technical field [0001] The invention relates to a preparation method of graphene ultra-high molecular weight polyethylene composite fiber, which belongs to the technical field of fiber materials. Background technique [0002] Ultra-high molecular weight polyethylene is a thermoplastic engineering plastic with excellent comprehensive properties, which plays a pivotal role in modern warfare and aviation, aerospace, sea defense equipment and other fields. Ultra-high molecular weight polyethylene has the advantages of flame retardancy, chemical corrosion resistance, wear resistance, excellent electrical insulation and high mechanical strength. It is widely used in various fields and is the engineering plastic with the largest output in the world. [0003] Although ultra-high molecular weight polyethylene has many excellent properties, it also has many shortcomings: due to its long molecular chain, chain entanglement easily occurs when melting, and the melt viscosity is as high a...

AI Technical Summary

Problems solved by technology

[0003] Although ultra-high molecular weight polyethylene has many excellent properties, it also has many shortcomings: due to its long molecular chain, chain entanglement easily occurs when melting, and the melt viscosity is as high as 108Pa s; and the critical shear rate is low, which is easy to occur Melt fracture brings difficulties to molding processing; there are also shortcomings such as low surface hardness, poor abrasive wear resistance and low thermal deformation.