High-performance polyethylene fibers and applications of high-performance polyethylene fibers in anti-cutting ropes

Abstract

The invention provides high-performance polyethylene fibers and applications of the high-performance polyethylene fibers in anti-cutting ropes, and relates to the technical field of rope production. According to the present invention, the polyethylene fibers adopt ethylidene as a repeated unit, and contain fiber-state polyethylene with a weight average molecular weight (Mw) of 40000-240000, and a weight average molecular weight to number average molecular weight (Mn) ratio (Mw / Mn) of less than or equal to 4.0, and the gel fraction in the fibers is 100-10000 ppm. According to the present invention, with the application of the high-performance polyethylene fibers in anti-cutting rope knitting, the high-performance polyethylene fibers has strong tensile resistance, such that high thermal insulation and cutting resistance are provided when the high-performance polyethylene fibers are adopted as the main material of the rope, and light weight, high strength, cutting resistance, wear resistance and other special market requirements of the rope can be met.

Description

technical field [0001] The invention relates to the technical field of rope production. Background technique [0002] At present, chemical fibers are usually used as cut-resistant materials for ropes, and ropes woven with these fibers are mostly used for wear-resistant and cut-resistant protection. [0003] Therefore, as a function of imparting cut resistance, rope yarns or the like made of spun yarns of high-strength fibers such as aramid fibers have been designed. However, it is not yet satisfactory from the standpoint of wear resistance or durability. In addition, as another method, attempts have been made to improve the cut resistance by combining metal fibers and chemical fibers, but the incorporation of metal fibers has the problem of hardening the texture and affecting flexibility. [0004] In addition, a braided rope using polyethylene fibers having a high modulus of elasticity has been proposed as an invention for solving the above-mentioned problems. However, si...

AI Technical Summary

Problems solved by technology

However, since the modulus of elasticity of the fiber is too high, not only does it feel hard, but also only 3.6 can be obtained as the highest index value in the cut resistance measurement using the cut resistance performance test.

In addition, there is also the problem that the workability is lowered, that is, since the strength and the modulus of elasticity are increased to improve the cut resistance, the thermal conductivity is also increased, and there is also the problem that since the high molecular weight polyethylene resin is used, the , the drawing speed cannot be increased, so that the productivity of polyethylene resin fibers cannot be improved; or spinning instability such as drawing resonance is prone to occur, forming uneven filaments, and process instability occurs in the post-processing process