Polyvinyl alcohol gel medium used for recycling explosion fragments and shooting bullets as well as preparation method and applications thereof

Abstract

The invention relates to a polyvinyl alcohol gel medium used for recycling explosion fragments and shooting bullets as well as a preparation method and applications thereof, belonging to the technical fields of explosion and materials. The preparation method comprises the following steps: mixing polyvinyl alcohol with a solvent, placing the mixture in a high temperature environment to ensure thatthe solvent is completely absorbed by the polyvinyl alcohol; then adopting a solution casting method or extruder injection method to cast or squeeze the product into a mould in a set shape; and then performing the freeze-thaw and demoulding procedures to obtain the polyvinyl alcohol gel material. The polyvinyl alcohol gel recycling medium has certain distance from the site of an explosion test orfiring test and placed in the direction facing the explosion fragments or on the path of the shooting bullets to recycle the explosion fragments and bullets. The elasticity of the recycling medium isgood, the hardness is high, and the damping effect is good; the recycling medium is semitransparent, the cutting strength and tearing strength are proper, the fragments are easy to observe and take out; and after the recycling medium is subjected to heat treatment, the cuts of the recycling medium can be sealed well, thus the recycling purpose can be achieved.

Description

technical field [0001] The invention relates to a polyvinyl alcohol gel medium for recovering explosive fragments and shooting bullets, a preparation method and application thereof, and belongs to the technical field of explosion and materials. Background technique [0002] The recovery of explosive fragments refers to the recovery of metal fragments generated after the explosion of the explosive charge of the warhead. It is of great significance in evaluating the explosive performance of the explosive charge and the shape, size, quantity, and distance of the explosive fragments. In addition, the shooting tests of various firearms often require the recovery of bullet warheads to study their flight and target situations. At present, ordinary fiberboard is often used as the recovery medium for explosive fragments and warheads in shooting range tests and laboratories. The problem is that the fiberboard has high hardness, and the fragments change direction and deformation in the...

AI Technical Summary

Problems solved by technology

At present, in shooting range tests and laboratories, ordinary fiberboard is often used as the recovery medium for explosive fragments and warheads. The problem is that the hardness of the fiberboard is high, and the fragments change direction and deform obviously inside the fiberboard. It is not easy to observe when embedded in the fiberboard. Difficult to take out and collect; and the fiberboard fragments are flying, the test site is not clean, and the fiberboard recycling rate is low

Images