Ultra-high molecular weight polyethylene fiber bulletproof composite material and preparation method

Abstract

The invention relates to the technical field of high-resistance bulletproof composite materials and discloses an ultra-high molecular weight polyethylene fiber bulletproof composite material and a preparation method. The bulletproof composite material is prepared by compounding modified polystyrene resin and ultrahigh molecular weight polyethylene (UHMWPE) fibers, wherein the modified polystyreneresin is prepared by modifying polystyrene resin by adopting an ethylene-vinyl acetate (EVA) copolymer having high flexibility, elasticity and packing compatibility; the polymer prepared by polymerizing monomer styrene free radicals of the polystyrene resin is colorless and transparent, has high rigidity and is capable of improving wettability of the modified resin on fibers. The bulletproof composite material disclosed by the invention has the advantages of low density, high specific strength and specific modulus, shock absorption property, fatigue resistance, excellent environmental suitability and the like and meets bulletproof requirements. The preparation method disclosed by the invention has the advantages of simple steps and high operability and is capable of realizing batch production.

Description

technical field [0001] The invention relates to the technical field of high-resistance bulletproof composite materials, in particular to an ultrahigh molecular weight polyethylene fiber bulletproof composite material and a preparation method thereof. Background technique [0002] In recent years, due to the continuous conflicts and wars in various regions of the world, the spread of terrorist incidents, and the rapid development of the military equipment industry, more and more attention has been paid to the development and research of bulletproof materials, and more and more varieties have been put into application, such as bulletproof vests , helmets, and protective parts for tanks, aircraft, ships, etc. [0003] Ultra-high molecular weight polyethylene fiber (UHMWPE), also known as ultra-high-strength-high-modulus polyethylene fiber (UHS-HMPE) or elongated chain polyethylene fiber (ECPE), was first successfully adopted by Pennings in the Netherlands in the 1970s. It is o...

AI Technical Summary

Problems solved by technology

However, polyethylene fiber is a non-polar material. After gel heat stretching, the molecular chain is fully stretched, and the interior of the fiber is highly oriented and highly crystalline, and a weak interface layer (about 10 -100nm), the UHMWPE fiber surface is an inert surface, which is not easily wetted by the resin, that is, it cannot form a mechanical interlocking effect, which has a negative impact on the adhesion between the UHMWPE fiber and the resin in the composite material.

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