DOPAMINE-COATED UHMWPE/HYDROGEN-RICH BENZOXAZINE COMPOSITES FOR SPACE RADIATION SHIELDING

Abstract

Recently, COTS (commercial off-the-shelf) is being used as an electronic device for high performance and low cost of satellites. However, COTS is vulnerable to cosmic radiation. UHMWPE/hydrogen-rich benzoxazine composite (UHC) has excellent cosmic radiation shielding performance. However, the low interfacial adhesion of UHMWPE fibers causes the low flexural strength and delamination of UHC. It was possible to increase the interlaminar shear strength of UHC by polydopamine coating, MWCNT and amine grafting on UHMWPE. The space environment resistance was tested on UHC, and the cosmic radiation shielding performance was compared with existing space materials.