To solve the environmental pollution and resources waste in recovery process of waste printed circuit boards powders(WPCBP)and achieve its high-reutilization in polymer matrix,WPCBP was incorporated in unsaturated polyester resin(UPE)together with halloysite nanotubes(HNTs)to prepare WPCBP-HNTs/UPE novel ecofriendly composites.SEM and TEM were used to characterize the structure and morphology of WPCBP and HNTs and their dispersity and interfacial interaction.Then the thermal stability and flame retardancy o...