Shielding effectiveness, mechanical, thermal, and wear behaviors of bamboo-plastic shielding composites in simulated seawater condition

This research aims to study the shielding effectiveness (SE) of the proposed biomass bamboo-plastic shielding composite (BPSC) in simulated seawater condition. The observation of surface morphology reveals the material get some yellow spots on its surface after treatment owing to the production of metal corrosions. EDS result displays the Ni content decreased by 11.76%, while the Fe decreased by 18.41%, which is one of the causes of the decrease in electrical conductivity, magnetism, and SE. Thereinto, the SE value dropped from 75dB to 32dB(0.1MHz-2.0GHz). XRD results show the increase in lattice constant caused by the absorption of Na+ and Cl-, resulting in the improvement of thermal stability. Moreover, the treatment of simulated seawater causes the occurrence of micro-cracks in the composite and the degradation of two-phase combination, eventually leads to the deterioration in color, mechanical properties, and wear resistance of the composite. Among which, the tensile, bending and impact strength decreased by 10.2%, 26.4%, and 17.7%, respectively. Moreover, the average friction coefficient increased from 0.31 to 0.35.