Composite graphene PP master batch and its preparation method

Abstract

The invention belongs to the field of composite fiber preparation, and particularly relates to a composite graphene PP master batch and its preparation method. The composite graphene PP master batch is prepared from, by weight, graphene, sodium polyacrylate, cationic surface active agent, filler, microcrystalline cellulose, solvent, silica gel, and plant polyphenol, wherein the filler is one or more at any mass ratio of aluminium oxide, aluminite powder, titanium dioxide or pyrophyllite powder; the solvent is ethanol or acetone; the graphene is 3-10 layers of graphene. The composite graphene PP master batch can effectively improve the comprehensive performance of the PP fiber.

Description

Technical field [0001] The invention belongs to the field of composite fiber preparation, and specifically relates to a graphene composite PP master batch and a preparation method. Background technique [0002] PP (polypropylene) fiber has light weight, high strength, good elasticity, wear resistance, corrosion resistance, electrical insulation and warmth retention, and it occupies a large number of markets in the fiber application field. However, polypropylene fiber has high electrical resistivity (7×10Ω.cm) and low thermal conductivity. Compared with other chemical fibers, polypropylene fiber has the best electrical insulation and warmth retention, but it is easy to generate static electricity during processing; Low melting point (165~173℃), poor stability to light and heat. [0003] In order to expand the use range of PP fibers in the prior art, the comprehensive properties of PP fibers are usually changed by adding inorganic fillers. However, in specific applications, there w...

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Problems solved by technology

However, there will be the following problems in its specific application. One is the dispersion of the added inorganic fillers. Different sizes of inorganic fillers have a more obvious effect on the performance of polymers. Generally, the smaller the particle size (inorganic fillers), the better the performance of polymers. However, if the filler is too small, there will be a problem of agglomeration, and once the inorganic filler is agglomerated in the fiber, the toughness of the fiber agglomeration will be extremely poor; the second is the control of the amount of inorganic filler added, if the addition is too small, the fiber cannot be improved The performance of the fiber; adding too much will affect the performance of the fiber itself; how to effectively add inorganic fillers to effectively improve the comprehensive performance of the fiber is a research hotspot