The Effect of B۴C Concentration on the shilding properties ofpolydimethylsiloxane

The purpose of this project is to the investigation of PDMS/Novalac (۸۵/۱۵) polymer as a shieldingmaterial by adding B۴C. The samples were prepared by hot press method with differentconcentrations of boron carbide (B۴C); (۷, ۱۲, ۱۵, ۲۰ and ۳۰ wt./wt. %). The effects of differentweight fractions of B۴C on microstructure by analysis of scanning electron microscope (SEM) wereconducted. Also, the mechanical behavior of the prepared polymer composites were investigated byvarying the concentrations of boron carbide (B۴C). Addition of B۴C enhanced mechanical properties.On the other hand, addition of more than ۱۵ wt./wt. % B۴C led to destroy the mechanical propertiesof polymer composites

کلیدواژه ها:

polymer composites ، boron carbide ، PDMS/Novalac