KR20150004566A

KR20150004566A - Selectively transparence and IR/UV blocking Pair Glass comprising heat-blocking coating glass and Low E glass

Info

Publication number: KR20150004566A
Application number: KR1020130077666A
Authority: KR
Inventors: 김태현; 이광희
Original assignee: (주)디오
Priority date: 2013-07-03
Filing date: 2013-07-03
Publication date: 2015-01-13

Abstract

The present invention relates to a selectively transmissive IR / UV blocking double-layered glass including a heat-shielding coating glass and a low-temperature glass, wherein a gap is formed between two or more sheet glass and each glass by a spacer, Layered glass characterized in that an infrared absorbing coating is applied to the surface of the sheet and at least one of the remainder is coated with an infrared ray reflection coating on the surface thereof.
According to the present invention, it is possible to simultaneously satisfy the summer heat shielding effect and the winter insulation effect, thereby greatly reducing energy consumption of a building including a window glass.

Description

(Selectively Transparent and IR / UV Blocking Pair Glass Containing Heat-Blocking Glass and Low E Glass)

The present invention relates to a selectively transmissive IR / UV blocking double-layered glass including a heat-shielding coating glass and a Royer glass, and more particularly, The present invention relates to a double-layered glass having both a heat insulating effect and a heat shielding effect by suppressing an increase in room temperature.

Of the wavelengths of light coming from the sun, 150 to 380 nm is the wavelength that causes discoloration or damage to the object in the ultraviolet region, and 800 to 2500 nm is the infrared region, which has heat energy equivalent to 53% of solar energy. On the other hand, during indoor heating in winter, most of the heat inside the room is lost through the windows, resulting in a huge amount of energy loss. Therefore, a high transmittance is exhibited at a wavelength of 380 to 780 nm, which is a wavelength of a visible light region, and a method for effectively blocking ultraviolet and infrared rays is required without impairing visibility and viewability.

As such a method, there is a method of blocking the transparent heat shielding film by attaching it to a glass window or the like. However, the heat shield film is expensive and has a problem that the waste glass can not be regenerated later. In addition, the temperature of the glass window rises very high due to the heat absorbed from the thermal barrier film, and the glass is broken due to the difference in thermal expansion between the film and the glass.

Accordingly, coating methods for coating ultraviolet rays and infrared rays are newly emerged by coating a heat shielding coating solution containing an inorganic component similar to glass on the entire surface of glass. It is reported that such a thermal barrier coating glass blocks infrared rays in sunlight and suppresses the temperature rise in the room. However, the thermal insulation effect that suppresses the heat of the room from escaping to the outside in the winter is not limited to general transparent glass As shown in FIG.

On the other hand, low E glass which is widely used for construction is known as an energy saving glass which is formed by a multilayer film of a coating film such as silver (Ag) reflecting an infrared ray on the surface of a plate glass and an oxidation preventing film, It is known that the effect of heat insulation to prevent leakage to the outside is excellent, but it is known that the effect of heat shielding which suppresses rise of room temperature due to solar heat in the summer is not so great.

The object of the present invention is to provide a multi-layered glass in which a heat-insulating coated glass and a low-temperature glass are layered, .

According to the present invention, there is provided a double-layered glass in which a gap is formed between two or more glass sheets and a glass spacer, wherein at least one of the glass sheets has an infrared absorbing coating on the surface thereof, Layered glass characterized in that the surface is coated with an infrared ray.

In addition, the infrared absorbing coating preferably includes at least one infrared absorbing nanoparticle selected from the group consisting of antimony tin oxide, indium tin oxide, and cesium tungsten oxide within the coating film.

The infrared reflective coating preferably includes one or more layers of an infrared reflective film made of silver (Ag) or tin oxide.

According to the present invention, it is possible to simultaneously satisfy the summer heat shielding effect and the winter insulation effect, thereby greatly reducing energy consumption of a building including a window glass.

Fig. 1 is a schematic view of a double-layered glass according to the present invention.

The multi-layer glass of the present invention has a form of two glass sheets and a multi-layered glass in which a gap is formed between the glass sheets by a spacer or a triple-layered glass in which a gap is formed between three glass sheets and each glass spacer have. Of course, it is also possible to form a multi-layered glass in which a gap is formed by four or more glass sheets and spacers between the glasses.

At this time, at least one sheet glass has an infrared absorbing coating (aka, thermal barrier coating) on the surface, and at least one of the remainder may have an infrared reflective coating (aka, a laikoting) on the surface.

Each of the infrared absorbing coating and the infrared reflecting coating can form a coating film on any side of the plate glass.

Preferably, as shown in Fig. 1, one surface, two surfaces, three surfaces and four surfaces, respectively, of the outer surface side of the plane of the multilayer glass are referred to as infrared absorbing coating on two sides and infrared reflecting coating on three sides Plane. This is based on a two-layer glass with two glass sheets. If the glass sheet is a multi-layer glass with three or more glass sheets, the infrared absorption coating is applied to the inner side of the first glass from the outdoor side reference, Is formed on the inner surface of the first glass.

The infrared absorbing coating may comprise at least one infrared absorbing nanoparticle selected from the group consisting of antimony tin oxide, indium tin oxide and cesium tungsten oxide. Such an infrared absorbing nanoparticle may have an average particle diameter of 1 to 100 nm.

The coating of the infrared absorbing nanoparticles can be coated in a liquid phase, or can be coated by PVD, CVD or the like. If a liquid coating is used, it may be difficult to coat the infrared absorbing nanoparticles alone, so that a binder capable of fixing the same to the glass surface may be required. Such a binder may include a polymer resin such as an acrylic resin, a urethane resin or an epoxy resin, or an organic or inorganic hybrid resin such as polysiloxane or polysilazane formed by a sol-gel method.

Hereinafter, the present invention will be described by way of examples.

[Example 1]

A 6 mm transparent glass plate was coated with a polysiloxane hybrid binder and ATO (antimony tin oxide) mixed solution and spray coated at a thickness of 10 microns (heat shielding coated glass) and 6 mm transparent glass plate coated with hanglass, 6PLA113 ) To prepare a double-layered glass of Example 1, and the visible light transmittance, shielding coefficient, and heat conduction ratio were measured.

[Comparative Example 1]

Layer glass was prepared in the same manner as in Example 1, except that a 6 mm clear glass was used in place of the heat shielding coated glass of Example 1 above.

[Comparative Example 2]

A double-layered glass was produced in the same manner as in Example 1, except that 6mm clear glass was used in place of 6PLA113 in Example 1. [

Visible light transmittance (%) Shielding coefficient Thermal Permeability ( W / m ² K) Example 1
(6coat + 12A + 6PLA113) 70% 0.58 1.70 Comparative Example 1
(6clear + 12A + 6PLA113) 76% 0.7 1.73 Comparative Example 2
(6coat + 12A + 6clear) 78% 0.67 2.6

As can be seen from Table 1, in the case of the double-layered glass of Example 1, the visible light transmittance was slightly lower than those of Comparative Examples 1 and 2, and the shielding coefficient as a measure of solar heat transmission and the heat conduction rate Both can be seen improved.

Claims

Layered glass in which a gap is formed between two or more sheets of glass and a pair of spacers, wherein at least one of the sheets of glass is coated with an infrared ray absorbing coating on the surface thereof and one or more of the remaining sheets are coated with infrared ray reflection Double-layered glass features.

The method according to claim 1,
Wherein the infrared absorbing coating comprises at least one infrared absorbing nanoparticle selected from the group consisting of antimony tin oxide, indium tin oxide, and cesium tungsten oxide within the coating film.

The method according to claim 1,
Wherein the infrared reflective coating comprises one or more layers of an infrared reflective film of silver (Ag) or tin oxide.

The multi-layered glass according to claim 1, wherein the infrared absorbing coating is coated on an inner surface of a plate glass positioned on an outdoor side, and the infrared ray shining coating is coated on an inner surface of a plate glass located on an indoor side.