NUCLEAR TECHNIQUES, Volume. 47, Issue 9, 090501(2024)
Effect of two-dimensional functional fillers size on the performance of BN/EPDM flexible neutron protection composite materials
Figures & Tables(10)
Fig. 1. Schematic diagram of thermal neutron shielding performance test (a) Without sample/without Cd sheet, (b) With sample/without Cd sheet, (c) Without sample/with Cd sheet, (d) With sample/with Cd sheet
Fig. 2. Characterization of the SEM microscopic morphology and size distribution of BN (a) Microscopic morphology of micron BN, (b) Lateral size distribution of micron BN, (c) Microscopic morphology of nano BN, (d) Lateral size distribution of nano BN
Fig. 4. Cross-sectional SEM morphology of composites with different contents of BN (a1~a5) Pristine μ-BN/EPDM, (b1~b5) Modified μ-BN/EPDM, (c1~c5) Pristine n-BN/EPDM, (d1~d5) Modified n-BN/EPDM
Fig. 5. Mechanical properties of n-BN/EPDM and μ-BN/EPDM (a) Tensile strength, (b) Elongation at break, (c) Surface hardness, (d) Tensile specimen
Fig. 6. Morphology of stretched fracture surface of composites with different contents of BN(a) n-BN/EPDM-80, (b) n-BN/EPDM-100
Fig. 7. Thermal neutron shielding performance of n-BN/EPDM and μ-BN/EPDM (a) Shielding rate, (b) Macroscopic cross section
Table 1. Raw material components for the preparation of BN/EPDM flexible neutron protection composites
View tableView in ArticleTable 1. Raw material components for the preparation of BN/EPDM flexible neutron protection composites
原料Raw material 功能Function 用量Amount / phr 氮化硼BN 中子屏蔽填料Neutron shielding fillers 20~100 三元乙丙橡胶EPDM 4045 柔性基体Flexible matrix 100 炭黑Carbon black (N550) 补强填料Reinforcement fillers 35 石蜡油Paraffinic oil 增塑剂Lubricant 50 氧化锌Zinc oxide 活化剂Activator 5 硬脂酸Stearic acid 活化剂Activator 1 二硫化四甲基秋兰姆TMTD 促进剂Accelerator 1 2-巯基苯并噻唑MBT 促进剂Accelerator 1 硫磺Sulphur 交联剂Crosslinking agent 1 偶氮二异丁腈AIBN 引发剂Initiator 2
Table 2. Data sheet of mechanical properties of n-BN/EPDM and μ-BN/EPDM
View tableView in ArticleTable 2. Data sheet of mechanical properties of n-BN/EPDM and μ-BN/EPDM
氮化硼用量
Content of BN / phr
拉伸强度
Tensile strength / MPa
断裂伸长率
Elongation at break / %
表面硬度
Hardness / HA
μ-BN/EPDM n-BN/EPDM μ-BN/EPDM n-BN/EPDM μ-BN/EPDM n-BN/EPDM 0 5.92 766 50 20 6.11 6.71 1 100 1 011 53 55 40 6.84 7.58 1 329 1 130 56 57 60 7.02 7.73 1 192 1 087 64 64 80 8.00 8.13 916 745 75 75 100 6.23 7.46 754 630 77 78
Table 3. Data sheet of thermal neutron shielding performance of n-BN/EPDM and μ-BN/EPDM
View tableView in ArticleTable 3. Data sheet of thermal neutron shielding performance of n-BN/EPDM and μ-BN/EPDM
氮化硼用量
Content of BN
/ phr
热中子屏蔽率Thermal neutron shielding rate / % 热中子宏观截面Thermal neutron macroscopic cross-section / cm-1 半值层厚度Half-value layer thickness / cm μ-BN/EPDM n-BN/EPDM μ-BN/EPDM n-BN/EPDM μ-BN/EPDM n-BN/EPDM 20 41.010 45.491 2.639 3.034 0.263 0.228 40 47.017 52.049 3.176 3.675 0.218 0.189 60 60.020 60.244 4.584 4.612 0.151 0.150 80 68.012 68.235 5.699 5.734 0.122 0.121 100 73.988 76.026 6.733 7.141 0.103 0.097
Tools
Get Citation
Copy Citation Text
Bo ZONG, Deyang ZENG, Kaikai WANG, Wencai TANG, Jiajia FU, Shuquan CHANG, Jialin HE, Fanglei CHEN, Ziping LI, Da LI. Effect of two-dimensional functional fillers size on the performance of BN/EPDM flexible neutron protection composite materials[J]. NUCLEAR TECHNIQUES, 2024, 47(9): 090501
Paper Information
Category: NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH
Received: Mar. 21, 2024
Accepted: --
Published Online: Nov. 13, 2024
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20