Preparation and performance research of fiber-based lightweight and efficient X-ray protection materials
Carbon fibers,pulp fibers and bismuth oxide nanoparticles were dispersed and mixed by mechanical stirring method,and then the mixture was placed in waterborne polyurethane by immersion method to prepare fiber-based lightweight and efficient X-ray protection materials.The effects of dispersing the bismuth oxide nanoparticles into fiber network structure on the micro-morphology,air permeability and X-ray protection properties of the materials were investigated.The results showed that the materials combining carbon fibers and pulp fibers had better X-ray protection property and certain air permeability than the traditional bismuth oxide nanoparticles/waterborne polyurethane materials without fiber web structure at the same amount of bismuth oxide nanoparticles.Under the condition of 100 kV tube voltage,the fiber-based lightweight high-efficiency X-ray protection material with the mass of 26.00 g and thickness of 1.2 mm could achieve the protective effect of lead equivalent of 0.35 mmPb,while the mass of the same lead equivalent and thickness of commercially available lead rubber material under the same surface area was 32.46 g,which indicated that the fiber-based lightweight high-efficiency X-ray protection materials could achieve a mass reduction of 20%.The research provides a new idea for the development of lightweight and efficient X-ray protection materials.
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