摘要
为满足工程应用领域对中子屏蔽材料力学性能的要求,采用短切碳纤维增强方法对传统的含B4C中子屏蔽材料进行了改良,研制出的新型B4C/环氧树脂基中子屏蔽材料具有良好的力学性能和屏蔽性能。重点研究了短切碳纤维含量、长度及表面处理工艺对碳纤维增强环氧树脂屏蔽材料力学性能的影响,结果表明,含10wt%B4C的碳纤维增强环氧树脂材料中树脂与纤维质量之比为5:1时,材料的拉伸强度最佳;当纤维长度为3–10 mm时,对材料拉伸性能影响较小;选用硅烷偶联剂KH-550进行纤维表面处理,能有效提高材料20%的拉伸性能。利用镅-铍中子源对含10wt%B4C碳纤维增强环氧树脂材料与含硼聚丙烯材料进行中子屏蔽比较实验,实验结果证明,该新型中子屏蔽材料能够满足中子屏蔽要求,具有良好的力学性能和广阔的应用前景。
To satisfy engineering requirements for mechanics performance of neutron shielding material, short carbon fiber was used to reinforce the traditional containing B4C neutron shielding material and effects of fiber content, length and surface treatment to mechanics performance of material was discussed. Based on Americium-Beryllium neutron source, material＇s neutron shielding performance was tested. The result of experiment prove that tensile strength of material which the quality ratio of resin and fiber is 5：1 is comparatively excellent for 10wt% B4C of carbon fiber reinforced epoxy resin, The tensile properties of material change little with the fiber length ranged from 3-10 mm. The treatment of fiber surface with silane coupling agent KH-550 can increase the tensile properties of materials by 20% compared with the untreated of that. A result of shielding experiment that the novel neutron shielding material can satisfy the neutron shielding requirements can be obtained by comparing with B4C/polypropylene materials. The material has good mechanical properties and wide application prospect.
出处
《核技术》
CAS
CSCD
北大核心
2013年第1期31-36,共6页
Nuclear Techniques
基金
中央高校基本科研业务费专项(kfjj120121
kfjj20110110)
2012年度江苏省科技支撑计划(工业)项目(BE2012107)资助
关键词
中子屏蔽材料
短切碳纤维
偶联剂
复合材料
Neutron shielding material, Short carbon fiber, Coupling agent, Composite
