Yarn and fabric with nano-powder mixture

A yarn made from a mixture of a grain and a first polymer by spinning, wherein the yarn comprises a plurality of fibers, each of the fibers has a surface layer and a core layer, the core layer is surrounded by the surface layer, the surface layer is made from the grain and the first polymer, the core layer is made from the first polymer, the grain is produced from a nano-powder mixture and a second polymer at a temperature between 235° C. to 245° C. and an injection pressure of the jet between 400 to 800 kg/cm2, and a particle size of the grain is from 0.1 cm to 0.5 cm, a weight percentage of the nano-powder mixture in the grain is from 60% to 70%, the nano-powder mixture comprises silicon dioxide, magnesium oxide and aluminum oxide, a weight ratio of the silicon dioxide to the magnesium oxide in the nano-powder mixture is from 2:1 to 1:2, and a weight ratio of the silicon dioxide to the aluminum oxide in the nano-powder mixture is from 2:1 to 1:2, the first polymer is selected from the group consisting of polyethylene, polypropylene, polyester, polyacrylonitrile, polyamide, or any combination thereof, the second polymer is selected from the group consisting of polyethylene, polypropylene, polyester, polyacrylonitrile, polyamide, or any combination thereof.