GLASS STACKING, PREPARATION PROCESS THEREOF AND WINDOW ASSEMBLY COMPRISING THE GLASS STACKING
A glass stacking includes a glass substrate; a low-emissivity layer; and an overcoat layer; wherein the low-emissivity layer is between the glass substrate and the overcoat layer; the low-emissivity layer is formed by chemical vapor deposition; the overcoat layer is formed by a coating layer containing a wet coating, and the wet coating includes a silica sol and/or a water glass solution.
1 . A glass stacking, comprising:
a glass substrate,
a low-emissivity layer, and
an overcoat layer,
wherein
the low-emissivity layer is between the glass substrate and the overcoat layer,
the low-emissivity layer is formed by chemical vapor deposition,
the overcoat layer is formed by a coating layer containing a wet coating,
the wet coating comprises a silica sol and/or a water glass solution.
2 . The glass stacking according to claim 1 , wherein the particle sizes of silica colloidal particles in the silica sol are 30 nm or less.
3 . The glass stacking according to claim 1 , wherein the particle sizes of silica colloidal particles in the silica sol are 20 nm or less.
4 . The glass stacking according to claim 1 , wherein the water glass solution comprises any one of a sodium water glass solution, a lithium water glass solution, a potassium water glass solution or any combination thereof.
5 . The glass stacking according to claim 1 , wherein the water glass solution has a water glass modulus of 2-4.
6 . The glass stacking according to claim 1 , wherein a solvent of the wet coating comprises water, alcohol, or a water-alcohol mixture.
7 . The glass stacking according to claim 6 , wherein the alcohol comprises ethanol and/or isopropanol.
8 . The glass stacking according to claim 1 , wherein the overcoat layer has a thickness of 90 nm-120 nm.
9 . The glass stacking according to claim 1 , wherein
the glass stacking has a visible light reflectivity of 2% or less; and/or
the glass stacking has a haze of 2% or less.
10 . A process for preparing the glass stacking according to claim 1 , comprising:
providing a glass substrate having a low-emissivity layer formed by chemical vapor deposition thereon, or providing a glass substrate and forming a low-emissivity layer by chemical vapor deposition on the glass substrate;
applying a wet coating on the low-emissivity layer to form a coating layer containing the wet coating on the surface of the low-emissivity layer;
drying the coating layer containing the wet coating, and curing the coating layer.
11 . The process according to claim 10 , wherein a manner of applying the wet coating comprises slot die.
12 . A window assembly comprising the glass stacking according to claim 1 .
13 . The window assembly according to claim 12 , wherein the window assembly comprises a door, a window, a curtain wall, a vehicle window glass, an airplane glass or a ship glass.