خانه news RADIATION SHIELD, POLYMER MAY REPLACE LEAD

RADIATION SHIELD, POLYMER MAY REPLACE LEAD

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radiation shield

PolymPart: The bismuth trioxide compound is lightweight, effective at shielding against ionizing radiation such as gamma rays, and can be manufactured quickly. Those qualities make it a promising material for use in applications such as space exploration, medical imaging, and radiation therapy.

radiation shield

“Traditional radiation shielding materials, like lead, are often expensive, heavy, and toxic to human health and the environment,” says corresponding author Ge Yang, an assistant professor of nuclear engineering at North Carolina State University.

“This proof-of-concept study shows that a bismuth trioxide compound could serve as effective radiation shielding, while mitigating the drawbacks associated with traditional shielding materials.”

Researchers demonstrated that they could create the compound using a curing method that relies on ultraviolet (UV) light—rather than relying on time-consuming high-temperature techniques.

“Using the UV curing method, we were able to create the compound on the order of minutes at room temperature—which holds potential for the rapid manufacturing of radiation shielding materials,” Yang says.

“This is an important point because thermal polymerization, a frequently used method for making polymer compounds, often relies on high temperatures and can take hours or even days to complete. The UV curing method is both faster and less expensive.”

Using the UV curing method, the researchers created samples of the polymer compound that include as much as 44% bismuth trioxide by weight. The researchers then tested the samples to determine the material’s mechanical properties and whether it could effectively shield against ionizing radiation.

“This is foundational work,” Yang says. “We have determined that the compound is effective at shielding gamma rays, is lightweight, and is strong. We are working to further optimize this technique to get the best performance from the material.

“We are excited about finding a novel radiation shielding material that works this well, is this light, and can be manufactured this quickly.”

The paper appears in the journal Nuclear Engineering and Technology.

Source: https://www.futurity.org/radiation-shielding-polymer-2361852/

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