Ultra high molecular weight polyethylene
Ultra high molecular weight polyethylene fibers (molecular weight ≥ 3 million g/mol) are woven and hot pressed into fiberboard, which is currently the mainstream core substrate for bulletproof backboards. Combined with alumina, silicon carbide, and boron carbide bulletproof ceramics to form ceramic composite armor, it can also be separately made into soft bulletproof vests and is an indispensable material for bulletproof systems.