Composite shielding material for medical X-ray protection

Abstract

The invention provides a composite shielding material for shielding medical X-ray, which insists of ray absorbing material and carrier material, wherein, the ray absorbing material comprises mixing lanthanide, tungsten, bismuth, tin and / or antimony, the lanthanide which is extracted from natural ore can be oxide or formalization compound thereof, the tungsten, bismuth, tin and / or antimony can be metal power thereof, also can be formalization compound thereof. The carrier material can be natural rubber or artificial rubber, thermoplastic elastomer, as well as plastic. The composite shielding material for shielding medical X-ray provide by the invention has the advantages of good shielding performance, light weight, non-poisonous, no pollution, low cost and so on, not only overcomes defects of using single element barium or bismuth, but also overcomes defects that the lead equivalent is reduced when absorbing low and high energy X-ray in the lanthanide adding with tungsten technology.

Description

technical field [0001] The invention relates to the field of medical X-ray protection, in particular to a composite shielding material for medical X-ray protection. Background technique [0002] As we all know, in modern medicine, X-ray imaging technology occupies an increasingly important position. On the one hand, the use of X-rays has brought great benefits to medical diagnosis and treatment, but at the same time it has brought damage to the health of medical workers and patients exposed, so protection must be strengthened. [0003] The traditional X-ray protection products in my country are lead protective products, which have made important contributions to X-ray protection for a long time in the past, but due to their heavy weight (6-8kg), the physical load of the staff who wears the product is increased. Moreover, because lead is a highly toxic chemical substance, the use of lead poses a serious threat to the health of production workers, and its waste will seriously ...

AI Technical Summary

Problems solved by technology

However, through careful research by the applicant, it has been found that the above-mentioned lead-free protection products still have inherent disadvantages

First of all, in products using barium, it is difficult to choose the chemical form of barium: if chemically stable and non-toxic barium sulfate is used, the sulfate radical that has little effect on radiation protection accounts for a large weight percentage, which is not conducive to Reduce the weight of the product; if other chemical forms of barium are used, such as oxides, chlorides, barium carbonate, etc., barium will show strong toxicity, which is not conducive to safe production, safe use and environmental protection; Because the production cost is high, it is not conducive to widespread use; moreover, the product using lanthanide plus tungsten has advantages in terms of non-toxicity, light weight, and low price, but the lead equivalent of this product is harmful to X-ray generation. The tube voltage has a great dependence, specifically, when the tube voltage is 100KV, its lead equivalent value is the highest; When using 150KV), the lead equivalent has decreased, which affects the better play of the light weight advantage of the product