钆-钡/天然皮革复合可穿戴X射线屏蔽材料的制备及性能

doi:10.19677/j.issn.1004-7964.2024.03.002

皮革科学与工程 ›› 2024, Vol. 34 ›› Issue (3): 9-16.doi: 10.19677/j.issn.1004-7964.2024.03.002

钆-钡/天然皮革复合可穿戴X射线屏蔽材料的制备及性能

李昊^1,2, 吴承承^1,2, 王志新³, 王亚平^1,2,*, 廖学品^1,2,*, 石碧^1,2

1.四川大学制革清洁技术国家工程实验室,四川成都 610065;
2.四川大学皮革化学与工程教育部重点实验室,四川成都 610065;
3.中金辐照成都有限公司,四川成都 611930

收稿日期:2023-12-23 修回日期:2024-01-18 接受日期:2024-01-19 出版日期:2024-06-01 上线日期:2024-04-25
通讯作者: *廖学品（1963-），男，教授，博导。主要从事皮革化学品、生物质功能材料等方向的研究。E-mail:xpliao@scu.edu.cn；王亚平（1992-），男，助理研究员，主要从事生物质功能材料方向的研究。E-mail:ypwang@scu.edu.cn。
作者简介:李昊（1993-），男，博士研究生，主要研究方向:生物质材料及应用。E-mail: hau_ly@163.com。
基金资助:
国家自然科学基金（22278279）；中国博士后科学基金（2023M742493）

Preparation and Performance of Gd-Ba/Natural Leather Wearable X-ray Shielding Composites

LI Hao^1,2, WU Chengcheng^1,2, WANG Zhixin³, WANG Yaping^1,2,*, LIAO Xuepin^1,2,*, SHI Bi^1,2

1. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
2. Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China;
3. Zhongjin Irradiation Chengdu Co., Ltd., Chengdu 611930, China.

Received:2023-12-23 Revised:2024-01-18 Accepted:2024-01-19 Published:2024-06-01 Online:2024-04-25

摘要/Abstract

摘要： 为了不明显增加材料厚度的同时提升屏蔽性能,通过等体积浸渍法将钡（Ba²⁺）负载到天然皮革（NL）的多层级结构中得到钡/天然皮革（Ba/NL）,并将分散有纳米氧化钆（Gd₂O₃）的水性聚氨酯涂饰剂均匀涂覆于Ba/NL的粒面,得到钆-钡/天然皮革复合X射线屏蔽材料（Gd-Ba/NL）。X射线屏蔽性能研究表明,施加含钆涂层后,1.5 mm厚的Gd_1.80-Ba_2.32/NL具有与2.6 mm的Ba_2.32/NL相近的屏蔽效率;得益于Gd和Ba的协同作用,Gd_1.80-Ba_2.32/NL对能量为16~48 keV的X射线的屏蔽效率达到70%以上,对能量为65和83 keV的X射线的质量衰减系数与0.25 mm铅板的作用相当。此外,Gd_1.80-Ba_2.32/NL具有穿戴舒适度高、力学性能佳的优势,其密度仅为铅衣的1/3,透水汽性是铅衣的12倍,抗张强度和撕裂强度分别是国家标准要求的2倍和3倍,是一种可用于替代铅衣的有潜力的可穿戴X射线屏蔽材料。

关键词: 天然皮革, 钡, 钆, 可穿戴, X射线屏蔽材料

Abstract: To enhance the shielding performance of materials without significantly increasing the thickness, barium (Ba) was initially incorporated into the hierarchical structure of natural leather (NL) through the equal volume impregnation strategy (Ba/NL), and the waterborne polyurethane finishing agent with well-dispersed nano-gadolinium-oxide (Gd₂O₃) was uniformly coated on the grain surface of Ba/NL to fabricate X-ray shielding material (Gd-Ba/NL). X-ray shielding performance results showed that the 1.5-mm-thick Gd_1.80-Ba_2.32/NL could provide an equivalent level of shielding efficiency to 2.6-mm-thick Ba_2.32/NL . The synergistic effect of Gd and Ba contributed to a shielding efficiency exceeding 70% for the X-rays in the energy range of 16-48 keV, and provided a comparable mass attenuation coefficient for the X-rays in the energy of 65 and 83 keV to that of 0.25 mm lead plate. Furthermore, Gd_1.80-Ba_2.32/NL exhibited several advantages, including superior wearable comfortableness and excellent mechanical strength. Notably, it possessed a density that is only 1/3 of lead apron, while offering a water vapor permeability 12 times higher than that of lead apron. Its tensile strength and tearing strength surpassed national standards by 2 and 3 folds, respectively. Consequently, Gd_1.80-Ba_2.32/NL holds great potential as a wearable X-ray shielding material capable of replacing traditional lead apron.

Key words: natural leather, barium, gadolinium, wearable, X-ray shielding material

中图分类号:

O644

李昊, 吴承承, 王志新, 王亚平, 廖学品, 石碧. 钆-钡/天然皮革复合可穿戴X射线屏蔽材料的制备及性能[J]. 皮革科学与工程, 2024, 34(3): 9-16.

LI Hao, WU Chengcheng, WANG Zhixin, WANG Yaping, LIAO Xuepin, SHI Bi. Preparation and Performance of Gd-Ba/Natural Leather Wearable X-ray Shielding Composites[J]. Leather Science and Engineering, 2024, 34(3): 9-16.

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钆-钡/天然皮革复合可穿戴X射线屏蔽材料的制备及性能

Preparation and Performance of Gd-Ba/Natural Leather Wearable X-ray Shielding Composites

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