Production method of nuclear radiation protection woven alloy lead fiber yarn chip shielding clothes

Abstract

The invention discloses a production method of nuclear radiation protection woven alloy lead fiber yarn chip shielding clothes and relates to the technical field of nuclear radiation protection biological shielding. The production method disclosed by the invention comprises the following steps: cutting a nuclear radiation shielding product, namely a woven alloy lead fiber yarn chip into pieces, then sewing to form naked clothes, respectively spraying anti-nuclear radiation glue serous fluid at seams and needle holes of the naked clothes, and further performing calendering and vulcanization shaping on the naked clothes under high-temperature conditions; and respectively wrapping thermoplastic polyurethane elastomer rubber base cloth inside and outside the shaped naked clothes, and performing heat sealing through a high-frequency machine. The production method disclosed by the invention has the characteristics of large adjustable range of lead equivalent, small non-uniformity in the lead equivalent, excellent shielding effect, good flexibility, capability of saving the consumption of raw materials, convenience in wearing, durability, flame retardance, water resistance, oil resistance, capability of removing pollution, disposal and the like.

Description

technical field [0001] The invention relates to the technical field of biological shielding for nuclear 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 better, but the price is higher; concrete is cheaper than heavy metals, but the density is small, a...

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, careless operation is easy to drop and hurt people or damage the shielding clothing

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