High-Z-element-natural leather composite X-ray shielding material and preparation method thereof

[0045] Example 1

[0046] Weigh 1 part of SrCl 2 ·6H 2 O was dissolved in 15 parts of deionized water, the pH of the solution was adjusted to 3.0 with HCl, and 1 part of 1.0 mm thick chrome-tanned cowhide was added to the prepared salt solution. The reaction was assisted by ultrasound at 20 ℃ for 0.5 h, and then The sample is dried in an oven at 60 ℃ to obtain nano-strontium chloride-cowhide composite material.

[0047] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 95% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The X-ray shielding efficiency of 0.24 mm Cu reaches 36%. Then the tear strength is tested, and the result is Picture 12 The stress-elongation image of the nano-strontium chloride-pigskin composite shown. It can be seen from the figure that the prepared composite material has excellent tear strength.

[0048] Example 2

[0049] Weigh 2 parts of AgNO 3 Dissolve in 198 parts of deionized water, use HCl to adjust the pH of the solution to 4.0, take 1 part of 0.7 mm thick chrome-tanned sheepskin in the prepared salt solution, invert and shake at 35 ℃ for 1 h, then soak the sample Dehydrate in excess acetone to obtain nano-silver nitrate-sheepskin composite material.

[0050] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 68% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The average energy is 48 keV and a half-value layer is The X-ray shielding efficiency of 0.24 mm Cu has reached 17%. Scan the material with an electron microscope to obtain figure 1 SEM image of nano-silver nitrate-sheep skin composite shown. It can be seen from the figure that a large number of silver nitrate nanoparticles are loaded on the sheepskin fiber, and the distribution is relatively dense, and the size of the n

[0051] Example 3

[0052] Weigh 36 parts of SnCl 4 Dissolve in 84 parts of acetone, take 1 part of 1.5 mm thick chrome-tanned pigskin in the prepared salt solution, shake it on a shaker at 10 ℃ for 2 h, and then place the sample in a vacuum drying oven to dry, namely Can obtain nano tin chloride-pigskin composite material.

[0053] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 73% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The X-ray shielding efficiency of 0.24 mm Cu reached 24%. After testing, the tear strength of the material is 53 N mm -1 It can be seen that the prepared composite material has excellent tear strength.