Thermal Neutron Radiation Shielding and Thermal Properties of B4CP/PI Polyimide Composite Films

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....

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Published inCai liao gong cheng = Journal of materials engineering Vol. 46; no. 3; pp. 48 - 54
Main Authors LI Xiao-min, WU Ju-ying, TANG Chang-yu, YUAN Ping, XING Tao, ZHANG Kai, MEI Jun, HUANG Yu-hong
Format Journal Article
LanguageChinese
Published Journal of Materials Engineering 01.03.2018
Subjects
boron carbide
mechanical property
polyimide
thermal neutron radiation shielding
thermal stability
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Summary: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 fill
ISSN:1001-4381
1001-4381
DOI:10.11868/j.issn.1001-4381.2016.001076