Environment-friendly heat shielding film using non-radioactive stable isotope and manufacturing method thereof

An environment-friendly heat shielding film using a non-radioactive stable isotope, the environmental-friendly heat shielding film comprising:

• a substrate layer;
• and
• a heat shielding layer formed on one surface of the substrate layer, the heat shielding layer containing a non-radioactive stable isotope tungsten bronze compound being deficient in oxygen, the heat shielding layer comprising a passivation film containing an organic acid metal chelate compound for improving heat resistance and durability of the oxygen-deficient non-radioactive stable isotope tungsten bronze compound;
• the non-radioactive stable isotope tungsten bronze compound forming a (Y)Ax(182,183,184,186)W1O(3-n), wherein
• the (Y)A is a non-radioactive stable isotope;
• the X is the number of elements doped to the (Y)A according to reduction calcination;
• the Y is a mass number of A;
• the (3-n) is lack of oxygen;
• and
• the (Y)A is a non-radioactive alkali metal element or a non-radioactive alkali earth metal element,
• wherein the organic acid metal chelate compound has a structure of R1-M-R2 in which M is any one element of Cu, Ag, Zn, Ni, W, and Co;
• and R1 and R2 each are any one of glutamic acid and sodium polyaspartate.