| abstract |
The present invention provides a heat ray shielding resin sheet material and a heat ray shielding resin sheet material laminate excellent in heat resistance in addition to visible light transmittance and heat ray shielding property, and a building structure using the same. A heat ray shielding resin sheet material containing fine particles having a heat ray shielding function in a resin, wherein the fine particles are represented by the general formula ZnxMyWOz (Zn is zinc, M is Cs, Rb, K, Na, Ba, One or more elements selected from Ca, Sr, and Mg, W is tungsten, O is oxygen, 0.001 ≦ x ≦ 2.0, 0.1 ≦ y ≦ 0.5, 2.2 ≦ z ≦ 3.0) It is composed of fine particles of a complex tungsten oxide B having a melted hexagonal crystal structure, and the ratio c / a of the lattice constant thereof is the general formula MyWoz (M, W, O are the same as above, 0.1 ≦ y ≦ 0.5, 2.2 ≦ z ≦ 3.0), which is larger than the lattice constant ratio c / a of the composite tungsten oxide A, whose numerical value is 1.027300 to 1.027700, and whose dispersed particle diameter is 1 nm to 500 nm. [Selection] Figure 3 |