Soft anti-penetrating material based on modified ultrahigh molecular weight polyethylene fiber and preparation method of soft anti-penetrating material

Abstract

The invention relates to a soft anti-penetrating material based on a modified ultrahigh molecular weight polyethylene fiber and a preparation method of the soft anti-penetrating material. The preparation method comprises steps of modification of an ultrahigh molecular weight polyethylene fiber, preparation of a three-dimensional woven prefabricated part, vacuum assistant compounding molding and drying curing. The step of modification comprises radiation grafting modification and dopamine modification, the surface hydrophilicity of the UHMWPE (ultrahigh molecular weight polyethylene), and the compatibility and the adhesiveness of the UHMWPE with a resin substrate composite system are effectively improved, the resin substrate composite system is prepared from a thermoplastic polyurethane elastomer solution and a shearing thickening liquid through compounding, and the resin substrate composite system is compounded with the three-dimensional woven prefabricated part in a vacuum assistant resin transferring molding mode. The soft anti-penetrating material has anti-penetrating properties meeting the standard GA68-2008, can be widely applied to fields of police security departments (suchas polices and prison guards) and civil fields (such as sports protection of fencing and the like, industrial protection of decoration, construction and the like, and security protection of taxi drivers and motorcycle racing drivers), and has very good development prospects.

Description

technical field [0001] The invention relates to the technical field of stab-resistant materials, in particular to a soft stab-resistant material based on modified ultra-high molecular weight polyethylene fibers and a preparation method thereof. Background technique [0002] The development of stab-resistant materials is the process from the initial use of full-hard stab-resistant materials to semi-hard stab-resistant materials, and then to soft stab-resistant materials. [0003] (1) Full-hard anti-stab material, generally a stab-proof vest made of high-performance alloy cold-rolled into an overall shape or a high-strength and light-weight (such as aluminum alloy) metal material to make a protective layer like scale armor, although this This stab-resistant material has excellent puncture resistance, but its bulky and inflexible shortcomings severely limit its promotion and commercial application value. [0004] (2) Semi-rigid anti-stab materials, generally twisted and woven ...

AI Technical Summary

Problems solved by technology

[0003] (1) Full-hard anti-stab material, generally a stab-proof vest made of high-performance alloy cold-rolled into an overall shape or a high-strength and light-weight (such as aluminum alloy) metal material to make a protective layer like scale armor, although this This stab-resistant material has excellent puncture resistance, but its bulky and inflexible shortcomings severely limit its promotion and commercial application value

[0004] (2) Semi-rigid anti-stab materials, generally twisted and woven metal wires or wound into metal rings, the ends are spot-welded, interlocked, one or more layers are compounded with fabrics or other anti-stab materials, or light-weight metal The sheet is made into a certain shape of the spliced ​​layer to enhance the anti-stab effect of the anti-stab material; the advantage of the semi-hard anti-stab material is that it inherits the superior anti-stab performance of the full-hard anti-stab material, but there are still problems of large quality, Disadvantages such as poor wearing comfort

However, when the physical mixing method is used, the efficiency of physical mixing is not high, and phase separation often occurs in the mixed system; when using methods such as irradiation activation grafting and surface free radical grafting reaction, the surface-grafted UHMWPE often has Timeliness, that is, after a period of time, due to the reconstruction of polymer chains, the surface returns to chemical inertness

Images