Reinforcement heat-reflecting antireflection coating

FIELD: chemistry.

SUBSTANCE: disclosed is a reinforcement heat-reflecting antireflection coating on a transparent plastic substrate consisting of an adhesive reinforcement layer with geometric thickness of 240-300 nm, made of silicon oxide SiOx, for 1.5≤x<2.0, where x is the oxidation state of silicon oxide; a conducting layer made of tin oxide SnO2, with geometric thickness of 260-300 nm, and an antireflection layer made of silicon dioxide SiO2, with geometric thickness of 90-100 nm.

EFFECT: depositing the disclosed coating on transparent plastic articles prolongs the service life of said articles while maintaining their transparency and improving mechanical strength.

2 dwg, 3 ex

 

The invention relates to the design hardening heat-reflecting antireflection coatings for transparent plastic products, such as screens PPE. Plastics under the influence of the external environment lose their transparency, the service life of products made of transparent plastics can be increased by applying a hardening of the coatings.

Known low-e coating applied at least two methods on a transparent substrate, containing three layers located on a substrate in the following order: a layer with a geometric thickness of 70-135 nm with a refractive index of 1.65-1,90, a functional layer with a low emission capacity of the metal oxide (metal oxide), the geometric thickness of 300-450 nm with a refractive index close to 2, the layer with a geometric thickness of 70-110 nm with a refractive index of 1.4-1,70, see patent RU 2127231, IPC C03C 17/34, 1994. Specified low-e coating provides reflectance in the near infrared range of 80-85%.

The disadvantages of the known low-emissivity coating are: low group 3 mechanical strength, wear on the OST 3-1901-95 for transparent plastic products (accept no more than 1000 rpm CM-55), is not sufficiently high transmittance, in the visible spectral range 0.4 to 0.7 microns does not exceed 86%.

Known netcoalition the floor, applied vacuum methods on a transparent glass substrate containing two layers located on a substrate in the following order: a layer of tin oxide or indium oxide, a geometric thickness of 200-300 nm and a layer of silicon oxide, the geometric thickness of 92-98 nm, and used to heat the optical parts and sight glasses to correct their fogging and icing, as a transparent heat-reflecting filters and electrodes, see "Handbook of engineer-optics". Under the General Ed. S.M. Smith and M.A. okatova. - L.: Engineering, Leningr. separa-tion, 1983, str. Specified low-e coating provides reflectance in the near infrared range of 80-85%.

The disadvantages of the known low-emissivity coating are: low group 3 mechanical strength, wear on the OST 3-1901-95 for transparent plastic products (accept no more than 1000 rpm CM-55), is not sufficiently high transmittance, in the visible spectral range 0.4 to 0.7 microns does not exceed 90%.

Known low-e coating applied using vacuum methods on a transparent glass substrate, contains two layers, and adjacent to the substrate layer is made of tin oxide, the geometric thickness of 200-300 nm, and the outer layer is made of magnesium fluoride, the geometric thickness of 92-98 nm, see patent RU 2339591, MP is 7 C07C 17/36, G02B 5/26, 2008. Specified low-e coating provides reflectance in the infrared region of the spectrum 80-85% and the transmittance in the visible region of the spectrum up to 95%.

A disadvantage of the known low-emissivity coating is a low group 3 mechanical strength, wear on the OST 3-1901-95 for transparent plastic products (accept no more than 1000 rpm CM-55).

The closest in purpose and set of matching characteristics with the claimed technical solution is hardening heat-reflective ar coating on a transparent plastic products, including a sublayer of silicon dioxide SiO2geometric thickness of 10-30 nm, caused by a chemical method or electron-beam evaporation, and then the conductive layer of tin oxide SnO3geometric thickness of 260 to 300 nm is deposited by a chemical process, then anti-reflective layer of silicon dioxide SiO2geometric thickness of 90-100 nm, deposited electron-beam evaporation. (Bubis IA Reference technologist optics: Directory / IA bubis, VA, Weidenbach, I.I. Bhopal and others; under the General Ed. S.M. Smith and M.A. okatova. - Leningrad: Mashinostroenie, Leningrad. separa-tion, 1983. - 414 S.; page 328). The specified coating provides transmittance in the visible range of the spectrum to 94.5%. It should be noted that this podsa is applied on chemically unstable substrate by chemical method for obtaining layers of tin oxide SnO 3.

The disadvantage of hardening heat-reflective ar coating on a transparent plastic products is the low group 3 mechanical strength, wear on the OST 3-1901-95 for transparent plastic products (accept no more than 1000 rpm CM-55).

The technical object of the present invention is to provide a hardening heat-reflective ar coating on a transparent plastic articles having high mechanical strength, wear to the 0-th group on the EAST 3-1901-95 (can withstand more than 3000 rpm CM-55).

The essence of the claimed technical solution is that the hardening heat-reflective ar coating on a transparent plastic substrate, consisting of a substrate made of silicon dioxide SiO2geometric thickness of 10-30 nm, a conductive layer made of tin oxide SnO3geometric thickness of 260 to 300 nm, and the antireflection layer is made of silicon dioxide SiO2geometric thickness of 90-100 nm, characterized in that the underlayer, made of silicon dioxide SiO2replaced by the adhesion reinforcing layer with a geometric thickness of 240-300 nm, made of silicon oxide SiOx, at 1.5≤x<2,0, where x is the oxidation state of silicon oxide.

The claimed technical solution is illustrated in the following mater what Alami.

Figure 1 schematically presents a hardening heat-reflective ar coating on the plastic product:

1 - substrate (transparent plastic);

2 - strengthening adhesion layer of silicon oxide SiOx(1,5≤x<2,0);

3 - the heat-reflecting layer of tin oxide SnO3;

4 - anti-reflective layer of silicon dioxide SiO2.

Figure 2 presents the transmission spectrum hardening heat-reflective ar coating in the visible region of the spectrum.

The solution of the technical problem is that the manufacturer of the coating is carried out in a vacuum chamber. Forming on a transparent plastic substrate hardening adhesive sublayer of silicon oxide, heat-reflecting layer of tin oxide and anti-reflective layer of silicon dioxide perform magnetron sputtering in argon and oxygen. Prior to placing the substrate in a vacuum chamber with its preliminary degreasing. In a vacuum chamber with a residual pressure of 2.6 10-3The PA shall overlap of argon to a pressure of 0.2-0.3 PA, and then the substrate is closed by the valve and light the discharge on the magnetron target of silicon to remove the oxide film from the surface of the target within 5 minutes of burning discharge, after which add oxygen to allow oxidation of the silicon to the desired degree of oxidation on the flap is removed and n is pelaut on a substrate hardening the adhesive layer of silicon oxide SiO xgeometric thickness of 240-300 nm. If the thickness is smaller hardening of the adhesive layer of silicon oxide greatly reduces the strength characteristics of the coating, the greater the thickness deteriorate the optical properties. Upon completion of forming on a substrate a hardening adhesive layer of silicon oxide light the discharge on the magnetron target of tin on the surface of the hardening of the adhesive layer of silicon oxide to form the heat-reflecting layer of tin oxide SnO2geometric thickness of 260 to 300 nm. If the thickness is smaller layer of tin oxide decreases the optical properties of the reflection coefficient in the infrared region, the greater the thickness deteriorate the optical properties. After the formation of the heat-reflecting layer of tin oxide ignite the discharge in a magnetron with a target of silicon on the surface of the heat-reflecting tin oxide layer form the antireflection layer of silicon dioxide SiO2geometric thickness of 90-100 nm. When the thicknesses other than the specified range, deteriorate the optical properties of the coating.

The claimed technical solution allows to increase the mechanical strength, wear - coating has the highest 0-th group of the mechanical strength, wear on the OST 3-1901-95 for transparent plastic products (up over 3000 rpm CM-55).

The proposed invented the e is illustrated by the following examples of specific performance.

Example 1. Hardening heat-reflective ar coating on a plastic substrate containing reinforcing adhesion layer of silicon oxide SiOxthe degree of oxidation x=1,8, the geometric thickness of which is 270 nm, the heat-reflecting layer of tin oxide SnO2geometric thickness of which is 280 nm, the antireflection layer of silicon dioxide SiO2geometric thickness of which is 95 nm. Coating on a transparent plastic product has the highest 0-th group of the mechanical strength, wear on the OST 3-1901-95 (can withstand more than 3000 rpm CM-55), the integral transmittance in the visible region of the spectrum more than 94% and the reflectance in the visible region of the spectrum less than 2%, the reflectance in the infrared region of the spectrum more than 80%.

Example 2. Hardening heat-reflective ar coating on a plastic substrate containing reinforcing adhesion layer of silicon oxide SiOxthe degree of oxidation x=1.6, the geometric thickness of which is 240 nm, the heat-reflecting layer of tin oxide SnO2geometric thickness of which is 260 nm, the antireflection layer of silicon dioxide SiO2geometric thickness is 90 nm. Coating on a transparent plastic product has the highest 0-th group mechanical so the spine, wear on the OST 3-1901-95 (can withstand more than 3000 rpm CM-55), integrated transmittance in the visible region of the spectrum more than 93% and the reflectance in the visible region of the spectrum less than 3%, the reflectance in the infrared region of the spectrum more than 70%.

Example 3. Hardening heat-reflective ar coating on a plastic substrate containing reinforcing adhesion layer of silicon oxide SiOxthe degree of oxidation x=1,9, geometric thickness of 300 nm, the heat-reflecting layer of tin oxide SnO2geometric thickness of 300 nm, the antireflection layer of silicon dioxide SiO2geometric thickness of which is 100 nm. Coating on a transparent plastic product has the highest 0-th group of the mechanical strength, wear on the OST 3-1901-95 (can withstand more than 3000 rpm CM-55), the integral transmittance in the visible region of the spectrum more than 93% and the reflectance in the visible region of the spectrum less than 3%, the reflectance in the infrared region of the spectrum more than 70%.

The claimed technical solution meets the criterion of "novelty", presented to the invention, because of the investigated prior art the applicant has not identified the technical solutions provided in the claimed technical solution set of features.

The claimed technical solution meets Crete is a theory of "inventive step", presented to the invention, since it is not explicitly studied by the applicant of the technical level.

The claimed technical solution meets the criterion of "industrial applicability", presented to the inventions as claimed technical solution is made known to the equipment, through the application of standard techniques and known materials.

Hardening heat-reflective ar coating on a transparent plastic substrate, consisting of a substrate made of silicon dioxide SiO2geometric thickness of 10-30 nm, a conductive layer made of tin oxide SnO2geometric thickness of 260 to 300 nm and an antireflection layer made of silicon dioxide SiO2geometric thickness of 90-100 nm, characterized in that the underlayer, made of silicon dioxide SiO2replaced by the adhesion reinforcing layer with a geometric thickness of 240-300 nm, made of silicon oxide SiOx, at 1.5≤x<2,0, where x is the oxidation state of silicon oxide.



 

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14 cl, 5 tbl, 4 ex, 3 dwg

Mirror // 2466949

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SUBSTANCE: mirror has a glass substrate, a silver coating layer and at least one paint layer applied on top of the silver coating. The colour of the paint layer is characterised by the following colour coordinates: L*, the value of which is less than 40; a*, the value of which ranges from -10 to +10; and b*, the value of which ranges from -10 to +10. The mirror does not have a copper layer.

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18 cl, 2 tbl

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5 cl, 3 dwg, 3 ex

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1 dwg, 2 ex

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