“…Some inorganic materials with 1D nanostructures, such as halloysite nanotubes (HNTs) [ 38 , 39 ], multiwalled carbon nanotubes (MWCNTs) [ 40 ], various whiskers [ 41 , 42 ], nanowire materials [ 43 ], etc., have certain flame-retardant and smoke-suppressing effects. But there are problems with agglomeration, which deteriorates the mechanical properties of the matrix due to excessive addition.…”