材料工程2018，Vol.46Issue(3)：48-54,7.DOI:10.11868/j.issn.1001-4381.2016.001076
B4Cp/PI聚酰亚胺复合薄膜耐高温及热中子辐照屏蔽性能研究
Thermal Neutron Radiation Shielding and Thermal Properties of B4Cp/PI Polyimide Composite Films
摘要
Abstract
B4Cp/PI polyimide composite films with different powder contents and thicknesses were prepared by particle surface modification and wet mixing machinery-thermal imidization method,using high temperature polyimide as matrix and micro-sized boron carbide (B4C) as thermal neutron absorption material.The thermal neutron radiation shielding property,thermal stability and mechanical property of B4Cp/PI polyimide composite films were mainly discussed in this paper.It is shown that the micro-sized B4C functional particles can be well dispersed in PMDA-ODA polyimide matrix,and the thermal stability of B4Cp/PI polyimide composite films are significantly improved with the increase of B4C content.However,the mechanical properties of the composite films present the opposite trend;meanwhile,the B4Cp/PI polyimide composite films exhibit excellent thermal neutron radiation shielding properties,and the neutron permeability I/I0 presents exponential relationship with the increasing thickness of composite and B4C filler particle content.Therefore,through structural design of the materials,the applications requirements in different fields for materials with high temperature resistant and thermal neutron radiation shielding properties can be met.关键词
聚酰亚胺/碳化硼/热中子辐照屏蔽/热性能/力学性能Key words
polyimide/boron carbide/thermal neutron radiation shielding/thermal stability/mechanical property分类
通用工业技术引用本文复制引用
李晓敏,吴菊英,唐昶宇,袁萍,邢涛,张凯,梅军,黄渝鸿..B4Cp/PI聚酰亚胺复合薄膜耐高温及热中子辐照屏蔽性能研究[J].材料工程,2018,46(3):48-54,7.基金项目
国家863计划基金项目(2015AA034004) （2015AA034004）
中国工程物理研究院双百人才工程基金项目(ZX20150402) （ZX20150402）
四川省科技支撑计划基金项目(2015GZ0068) （2015GZ0068）
国家青年科学基金(21404095) （21404095）
