RU2436748C1 - Multilayer glass for glasing vehicles - Google Patents

Abstract

FIELD: chemistry. ^ SUBSTANCE: invention relates to the design of multilayer glass for glasing vehicles. The multilayer glass for glasing vehicles has two or more silicate glass sheets joined together by a plastic material which enters the edge zone on the entire perimetre of the article. The adhesive layer is made from polyurethane and a polycarbonate intelayer. The outer and back silicate glass sheets are separated by optical amber glass which provides protection from UV radiation with wavelength 0.38 mcm, and blue-green glass which protects from infrared radiation with wavelength greater than 0.8 mcm. ^ EFFECT: reduced harmful effect of UV and infrared radiation on a person while maintaining high light transmission in the visible spectrum. ^ 2 cl, 2 dwg

Description

The invention relates to products of the glass industry, in particular to the construction of laminated glasses used as glazing products for vehicles such as airplanes, helicopters, etc., in goggles, helmets, masks, shields and screens to protect the eyes and open areas of the human body from exposure intense light radiation.

Laminated glass and the color intermediate film used therein / 1 / are known. A colored intermediate film for laminated glass is obtained from a polymer composition containing polyvinyl acetal, a dye and an additive for protection against infrared radiation. The proposed film provides good protection against infrared radiation, does not whiten even when absorbing moisture, and retains the basic performance characteristics.

In the known laminated glass / 2 /, at least one carrier sheet of glass is pretreated with an adhesion promoter, and then one layer of polymer is applied to this glass. After that, an inexpensive, safe laminated glass that is resistant to UV radiation is obtained.

It is known glazing / 3 /, suitable for heat treatment, for example, hardening or heating during milling, which contains a multilayer coating deposited on a glass sheet and containing ≥12% tin, the first silver-based layer reflecting infrared radiation, a layer of mixed zinc oxide / tin containing ≥12% tin and a protective top layer based on nitride or oxynitride Ti, Zr, Hf, Nb, Ta, Cr and their alloys or nitride or oxynitride alloys of these metals with A1 and / or B. Glazing has high thermal insulation properties .

It is known glazing / 4 /, upon receipt of a panel of which a lower non-reflective coating layer, a layer reflecting infrared radiation, an upper non-reflective layer and an upper coating layer consisting of two sublayers — at least one of such materials as titanium, titanium oxide and titanium nitride.

And a second sublayer of at least one of such materials as silicon oxide, silicon nitride, silicon oxy nitride, silicon carbonitride, silicon oxycarbide or silicon oxycarbonitride, the second sublayer may have a geometric thickness of 1.5-3.0 or 20-40 nm

Known laminated glass / 5 /, having all the basic properties inherent in laminated glass, and characterized by a bright color cast when viewed from the outside, and when viewed from a room, has a tint almost identical to the shade of a single sheet of glass. Laminated glass contains two sheets of glass, stacked on top of each other and separated by an intermediate film, the glass sheet installed on the outside is a color transparent glass sheet, the glass sheet installed on the inside reflects visible light, and the intermediate film contains small particles of tin doped indium oxide .

The invention / 6 / proposes a material that absorbs infrared radiation in the near spectral region and has high light fastness, which is intended for use as an intermediate film in laminated glass. In one embodiment, the laminated glass comprises two transparent base glasses separated by an intermediate film from a composition that absorbs infrared radiation. The proposed composition contains: a layer containing an ester of phosphoric acid having C ₁₂ -C ₂₄ alkenyl; a phosphoric acid ester containing layer containing an alkyl or monovalent group having an ester and / or ester bond; and a layer containing copper ions.

The invention / 7 / proposes an intermediate film for laminated glass, characterized by good transparency, heat-shielding properties and the ability to propagate electromagnetic waves even when it is between two sheets of laminated glass. After tests for resistance to light, the film does not reduce the transmittance of visible light, does not reduce the initial optical properties and remains resistant to atmospheric conditions. The film contains heat-protective layers and / or layers that protect against UV radiation.

Known heat-resistant laminated glass / 8 /, characterized by a high degree of protection against infrared radiation and high transparency and having a low cost even when using microparticles of indium tin oxide to shield infrared radiation, containing several sheets of glass separated by intermediate layers. Each sheet of glass is a UV-cut green glass with a thickness of 1.4-2.5 mm, which contains 0.6-1.2% of iron calculated on Fe ₂ O ₃ and 15-40% FeO of the total iron content. Microparticles of indium tin oxide with an average size of ≤0.2 μm in the amount of 0.4-0.8 g / m ^{2 are} dispersed in the intermediate layers.

Closest to the proposed one is laminated glass / 9 / for vehicle glazing, containing two or more silicate glasses, including the outer and the rear, glued together by plastic material, extending into the edge zone around the entire perimeter of the product, forming a soft frame, and gluing the layer is made of polyurethane with a thickness of 1.0-3.0 mm and a layer of polycarbonate.

This invention is selected as a prototype.

The disadvantage of this laminated glass is the high transmittance in the near infrared range, which can cause damage to the organs of vision or open areas of the human body by radiation from intense sources of optical radiation if it is used as glazing products for vehicles, etc.

The objective of the invention is to reduce the harmful effects of UV and IR radiation on humans and at the same time provide high light transmission in the visible region of the spectrum.

The essence of the invention lies in the fact that laminated glass includes a package of glass sheets containing outer and rear silicate glasses separated by optical yellow glass, which provides protection against UV radiation with wavelengths up to 0.38 μm, and blue-green glass, which protects against exposure to infrared radiation with wavelengths greater than 0.8 μm, glued together by a plastic material, and the thickness of the glasses yellow and blue-green is 3.0-5.0 mm

A design variant of the proposed laminated glass is shown in FIG. 1 and includes external 1 and rear 2 silicate glasses serving as weather protection, separated by optical yellow glass 3 of type ЖС4 / 10 /, cutting off UV radiation with wavelengths up to 0.38 μm, and blue-green glass 4 type SZS26 / 10 /, which protects against the effects of infrared radiation with wavelengths greater than 0.8 μm, glued together with a plastic material of polyurethane 5.

At the Institute, measurements were made of the spectral transmittance of the proposed laminated glass using the KFK-2 device, which showed a decrease in the proportion of UV and IR radiation and the preservation of a high transmittance in the visible part of the spectrum. The measured values of the spectral transmittance of the proposed option laminated glass τ _λ ^sf are shown in Figure 2 and are 80-82% in the region of maximum eye sensitivity. Here is a graph of the spectral sensitivity of the human eye K _λ ^oz for daytime observation conditions.

Information sources

1. International patent No.2009292923, cl. C 03C 27/12.

2. International patent No. 2006050927, cl. C 03C 17/32.

3. International patent No. 2006048463, cl. C 03C 17/36.

4. International patent No. 2006048462.

5. Patent WO 2006134860 A1, 06/12/2006.

6. Patent WO 2005111170 A1, 05.16.2005.

7. Patent EP 1698600 A1, 12/14/2004.

8. Patent WO2005044751 A1, 10.11.2004.

9. Patent EAPO No. 009640, 02/28/2008.

10. Optical color glass, GOST 9411-81, M., 1981.

Claims (2)

1. Laminated glass for vehicle glazing, containing two or more silicate glass, including outer and rear, glued together by a plastic material that extends into the edge zone around the entire perimeter of the product, forming a soft frame, the bonding layer is made of polyurethane and a layer of polycarbonate characterized in that the outer and rear silicate glasses are separated by an optical yellow glass, which provides protection against UV radiation with wavelengths up to 0.38 μm, and a blue-green glass, which protects against the effects of IR radiation of wavelengths greater than 0.8 microns. 2. Laminated glass according to claim 1, characterized in that the yellow and blue-green glass are made with a thickness of 3.0-5.0 mm

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