Nuclear radiation shielding lead clothes and production method thereof

Abstract

The invention discloses nuclear radiation shieling lead clothes and a production method thereof, relating to an anti-nuclear radiation technology. The production method comprises the following steps of: uniformly laying lead fiber yarns with diameters between 0.1 and 0.3 millimeter in a wood mold to form a lead fiber yarn sheet; taking the shaped lead fiber yarn sheet out and spraying a natural rubber adhesive; putting the lead fiber yarn sheet on which the natural rubber adhesive is sprayed into a metal mold, treating under the vulcanizing pressure condition 300 kilograms at the temperature between 160 and 200 DEG C in a high-temperature vulcanizing machine for 350-450 seconds, cooling to normal temperature and taking a vulcanized chip out; and sewing the chip in a textile fabric to obtain the lead clothes. The method has a simple and reasonable process, and is easy for production and manufacturing; the lead clothes or a lead screen has low material consumption, is convenient to wear, and has high durability; and the field irradiation time can be saved by 50 percent for maintenance personnel.

Description

technical field [0001] The invention relates to nuclear radiation protection technology, in particular to the technical field of material production for making lead clothing or lead screen liners for radiation protection. Background technique [0002] Studies have shown that the external radiation of nuclear power plants is mainly γ-rays, which mainly come from the fission products of nuclear reactions and the pipelines and valves activated by neutrons. Due to the appearance of activated corrosion products in the pipelines, radioactive particles in the pipelines are deposited, making the control area The environmental dose in many maintenance work places is relatively high, which increases the external exposure dose of the staff, which is generally relieved by shielding. Therefore, in the selection of shielding materials, strive to be efficient, safe, cheap and space-saving, usually steel, lead, ordinary concrete and heavy concrete are selected. The strength of steel is be...

AI Technical Summary

Problems solved by technology

Practice has proved that although lead plate and lead skin products have better anti-nuclear radiation effects, they are used in large quantities when building a shielding system, which is difficult to build, low in work efficiency, produces a lot of waste, and has high potential risks; and lead plate products have poor conformability. Can not be bent, not suitable for shielding special-shaped equipment such as pipes, valves, etc., and it is easy to drop and hurt people or damage equipment if it is accidentally operated

The products, coatings and adhesives made of lead powder mixed with rubber and polyethylene foam materials have certain flexibility, but because the lead powder particles are easy to accumulate, it is difficult to mix evenly in the base material, so the shielding performance is not uniform. And the lead equivalent is low, rubber and polyethylene are easy to age, which affects the shielding effect and brings the danger of radiation to the staff

Hollow microspheres made of heavy metals such as lead are lightweight and high-strength materials. Although they have excellent anti-nuclear radiation performance, they are expensive and costly. They are generally used in nuclear rocket engines to prevent nuclear radiation leakage

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