Buoyancy ultrahigh molecular weight polyethylene fibers and preparation method thereof

Abstract

The invention belongs to the technical field of fiber preparation and discloses buoyancy ultrahigh molecular weight polyethylene fibers and a preparation method thereof. The method comprises the following steps of (1) preheating epoxy resin, heating to 60 -85 DEG C, maintaining for 20 -30 min, degassing for 1 h, adding a curing agent and stirring rapidly upon putting in, and degassing again; and adding hollow glass microbeads while stirring, uniformly mixing, and standing; (2) stirring a silane solution and adding the solution into the step (1), rapidly stirring the mixture for 50 -65 min, anddrying for 2.5 -3.2 hours at 80 -100 DEG C to obtain activated hollow glass microbeads; (3) mixing the hollow glass microbeads with an ultrahigh molecular weight polyethylene solution, stirring and heating to 30 -70 DEG C, maintaining the temperature for 1 -1.2 hours and then forming spinning fluid; and (4) injecting the spinning fluid into a double-screw extruder from a feeding kettle to obtainjelly precursor yarns, and preparing the buoyancy ultrahigh molecular weight polyethylene fibers through extraction and multi-multiple stretching. The ultrahigh molecular weight polyethylene fibers prepared by the method in the invention have the advantages of stable structure, good performance, light weight and good floating performance.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, and relates to a buoyancy ultra-high molecular weight polyethylene fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene fiber is a fiber made from ultra-high molecular weight polyethylene. The ultra-high molecular weight makes the ultra-high molecular weight polyethylene fiber have excellent properties such as strong wear resistance, good lubricity, high strength, stable chemical properties, and anti-aging. Therefore, ultra-high molecular weight polyethylene fibers are used in national defense military equipment (for example, body armor, helicopters, tanks and ship armor protection panels, etc.), aerospace (for example, wingtip structures of various aircraft, decelerators used for aircraft landing, etc.) Parachutes, ropes used by aircraft to suspend heavy objects, etc.), civil (for example, anti-shock, anti-corrosion, anti-corro...

AI Technical Summary

Problems solved by technology

At present, most of the solid buoyancy materials at home and abroad use epoxy resin as the matrix, filled with hollow glass microspheres or millimeter-sized balls to reduce the density, but the density, particle size, filling amount and Due to the limitation of strength, the low density and high strength of this type of buoyancy material is still a difficult point in today's research and development

[0004] At present, the combination of buoyancy material and ultra-high molecular weight polyethylene fiber to prepare a polyethylene material with good floating performance has not been found in the report of bulletproof, anti-stab and anti-cut products used in deep sea