Leadless radiation protection barium plate and method for producing the same

Abstract

The invention relates to a radiation protection material in the ionizing radiation protection field, and a production method thereof, in particular to a lead-free radiation protection barium board and a production method thereof. The lead-free radiation protection barium board adopts raw materials which are barium salt with the granularity of 300-500 meshes, portland cement and reinforcing fiber, and comprises the following components (part by weight): barium salt: 80-130, portland cement: 15-35 and reinforcing fiber: 5-28. The raw materials are made into mixed slurry and then made into boards with the thickness of 6mm-12mm on a cylinder extrusion machine, and multilayer boards are superposed and pressurized on a punch press of 2500T for 30-70 minutes for molding; the boards are treated with high-temperature steaming for 10-26 hours at 60-120 degrees, and then the lead-free radiation protection barium board is obtained after sanding. The product has stable protection performance, no lead or lead compounds contained in the raw materials, safety and harmlessness, fire prevention, moisture-proof performance, high-temperature resistance, stable geometric dimension, mechanization batch production, low cost with the price of only 1 / 3 of that of the lead plates with the same thickness, and simple production method.

Description

technical field [0001] The invention relates to a radiation protection material in the field of ionizing radiation protection and a production method thereof, in particular to a lead-free radiation protection barium plate and a production method thereof. Background technique [0002] The application of ionizing radiation technology in many aspects of industry, medicine and scientific research has an epoch-making role in promoting the development of the national economy and the progress of medical and health undertakings. However, excessive radiation exposure will cause certain radiation damage to the human body. Ionizing radiation can not only cause systemic acute and chronic radiation damage, but also cause local skin damage, such as individual damage or an increase in the incidence of cancer in the population. Therefore, improper use, poor management, and insufficient protection will not only hurt the staff who apply radiation, but also endanger public health and environme...

AI Technical Summary

Problems solved by technology

[0003] Metal lead and metal tungsten are important materials for radiation protection. However, in recent years, the demand for heavy metal materials has increased in the development of the national economy. The pollution of heavy metals to the environment has led to the high price of the above materials, which greatly increases the cost of protection, and the metal lead is soft. , the geometric size is unstable, lead ions are volatile and pollute the environment

In recent years, there have been many alternative products in the market. The organic composite protective panels developed are limited in use due to their high production costs and environmental pollution. Inorganic composite protective panels are mostly produced by hand, with uneven thickness and poor protective performance. Stable, and there are problems in chemical materials and production processes, so it is difficult to promote practically

However, materials such as traditional protective coatings, inorganic and organic composite protective panels are widely used, and they are usually mixed with lead oxide powder and lead-zinc ore powder to improve protection performance. These lead oxide powder or lead-zinc ore powder are easily transferred to the environment and cause severe environmental pollution

And the price of lead oxide and lead-zinc powder contained in these protective plates is more expensive, is difficult to generally use, owing to there is above-mentioned problem, has influenced the development of radiation protection work

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