Antistatic ultrahigh-molecular-weight polyethylene fiber material used for packaging mechanical guide rail

Abstract

The invention relates to an antistatic ultrahigh-molecular-weight polyethylene fiber material used for packaging a mechanical guide rail, and belongs to the field of polyethylene fibers. A preparing method of the antistatic ultrahigh-molecular-weight polyethylene fiber material used for packaging the mechanical guide rail comprises the following steps of utilizing a double-screw extruder for swelling ultrahigh-molecular-weight polyethylene resin to prepare a spinning solution; forming gel-spun filaments after spinning and water-bath solidification are conducted; conducting preliminary draftingon the gel-spun filaments, and then conducting three-level thermal stretching on gel-spun fibers at 120 DEG C, 150 DEG C and 180 DEG C separately. Through three-level thermal stretching, the fibers gradually have surface defects, and graphene is well attached to the surfaces of the fibers. The antistatic ultrahigh-molecular-weight polyethylene fibers have excellent antistatic performance, wear resistance and strength.

Description

technical field [0001] The invention relates to an antistatic ultra-high molecular weight polyethylene fiber material used for packaging machinery guide rails, belonging to the field of polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene fiber, also known as high-strength and high-modulus polyethylene fiber, refers to a high-performance fiber made of polyethylene with a relative molecular weight of more than 1 million through spinning, extraction, drying and super-stretching. . Fiber-reinforced composite materials made of this fiber have the advantages of light weight, impact resistance, and good dielectric properties, and are widely used in aerospace, sea defense, weaponry, and daily industry. [0003] Since UHMWPE fibers have poor antistatic properties due to their good insulation, low dielectric constant (2.4), and high electrical resistance (>1014 Ω). Static electricity is easily generated during processing. Due to the high fr...

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Problems solved by technology

Especially in the heat stretching stage, if the static electricity generated is large and the cohesion of the tow is poor, then the phenomenon of mutual entanglement will occur during winding, resulting in an increase in the number of broken ends, and the fiber static is large, and the tow is easy to fluff , when unwinding in downstream applications, it is very easy to hang the wire guide and so on, so it is necessary to take appropriate measures to eliminate static electricity to ensure the stability of production

[0004] At present, in the production process, the effects of squeezing, pressing, pulling, grinding, and peeling produced during the friction process between UHMWPE fibers and the contact surface intensify the transfer of charges. There are existing literatures on the antistatic properties of fibers and fabrics. The problem has been systematically discussed, and many temporary and durable antistatic methods have been proposed, but the preparation process is cumbersome, which is not conducive to industrialization, or the addition of antistatic agents reduces the mechanical properties of ultra-high molecular weight polyethylene fibers.

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