TW201411198A - Weather-proof highly reflecting plate and manufacturing method thereof - Google Patents

Abstract

The present invention provides a weather-proof highly reflecting plate and manufacturing method thereof, which comprises a reflecting body layer, a pre-processing layer, a reflection enhancing layer, and a transparent protection layer. In which, the reflecting body layer is one of aluminum or aluminum alloy or a combination of both. The pre-processing layer is an oxide layer configured on the reflecting body layer, the reflection enhancing layer is configured on the pre-processing layer, and the transparent protection layer is a fluorocarbon coating configured on the reflection enhancing layer. Thus, the weather-proof highly reflecting plate according to the present invention may be characterized for surface water-proof, corrosion resistance, and having excellent reflectance within visible light wavelength range.

Description

Weather resistant high reflection plate and manufacturing method thereof

The present invention relates to a weather-resistant high-reflection sheet and a method of manufacturing the same, and particularly to a weather-resistant high-reflection sheet comprising a reflective main layer, a pretreatment layer, a reflection enhancing layer and a transparent protective layer, and a method of manufacturing the same.

A general reflector is made of aluminum or silver as a reflective body and glass as a surface protective layer. However, such a finished product has the disadvantages of high production cost, high weight, easy breakage and resistance to bending.

Therefore, in order to improve the above protective layer, the utility model has the advantages of high production cost, high weight, easy rupture and resistance to bending, etc., and a sol-gel coating coating is applied on the surface of the reflector to form a transparent surface by heat hardening. The product of the protective layer has the advantages of being hydrophobic, corrosion-resistant, wear-resistant and adapting to the overall climate.

According to the prior art, the reflective article has a reflectance of 75% to 83% in the visible light wavelength range, but if an additional reflective layer enhancement layer is added between the reflective main layer and the protective layer, the visible wavelength range is The reflectivity can exceed 90%. The loss of total reflection and gloss of the test was less than 5% with ASTM G53-96 and QUV-2000H.

It can be seen that although the prior art has solved the manufacturing cost, weight and bendability of the reflector, the reflectivity under natural light and the resistance to denaturation under actual long-term exposure also have room for improvement, so it is necessary to solve This question.

Therefore, in view of the defects of the above-mentioned conventional reflectors, the applicant has studied the innovation and the spirit of excellence, and utilized his professional vision and professional knowledge to study the weather-resistant high-reflection panels of the creation.

In accordance with the purpose of the present invention, a weather resistant high reflective sheet comprising a reflective body layer, a pretreatment layer, a reflection enhancing layer and a transparent protective layer is provided. The reflective main layer is sequentially stacked as a substrate, and is a pretreatment layer, a reflection enhancement layer, and a transparent protective layer.

Wherein, the reflective body layer is mainly a substrate and provides reflection, and the reflective body layer is one of aluminum, aluminum alloy, aluminum-containing material or aluminum-containing composite material or a combination thereof. Wherein, the aluminum alloy has an aluminum purity greater than 99.85%, and the reflective bulk layer has a thickness between 0.1 and 1.2 mm.

Wherein, the pretreatment layer is an oxide layer formed on the reflective main layer and formed by anodization, and the pretreatment layer comprises chromic acid, phosphoric acid, aluminum metal oxide, transition metal oxide or transition metal salt. The thickness of the treated layer is between 800 and 2000 nm.

Wherein, the reflection enhancement layer is disposed on the pretreatment layer, which is formed by the deposited aluminum metal layer or the aluminum alloy, and has a thickness of between 10 and 300 nm and a roughness of less than 0.1 um. The reflection enhancing layer has a total reflectance greater than 94% in the visible wavelength range. The reflection enhancing layer enhances the reflectivity of the weather-resistant high-reflection plate in the infrared, visible, and ultraviolet wavelength ranges.

Wherein, an optical coating layer formed of cerium oxide (SiO2) or titanium dioxide (TiO2) or both of the foregoing is further disposed on the reflection reinforced layer, and the optical plating layer has a thickness of between 40 and 120 nm.

The transparent protective layer is disposed on the reflective enhancement layer, and the transparent protective layer has a high transmittance, a colorlessness, and a thickness of between 6 and 13 um. Tested by ASTM G154-06 and QUV-A 4000H, this transparent protective layer has a total reflectance greater than 92% and a gloss loss of less than 5% in the visible wavelength range. It can be seen that the QV-2000H and the reflectance in the visible light wavelength range can exceed 90% compared with the prior art, which proves that the present invention has great progress.

According to the purpose of the present invention, a method for manufacturing a weather-resistant high-reflection sheet is further provided, the method comprising the steps of: providing a reflective main layer, one of aluminum or aluminum alloy or a combination of the two, casting, forging, and cold After the processing steps such as pressing and hot pressing are formed, the surface is further subjected to grinding and polishing treatment, and the reflective main layer is in the form of a sheet or a strip to facilitate a continuous process. An anode treatment step such as chromate treatment, phosphating treatment or anodizing treatment is formed on the reflective main layer to form a pretreatment layer, and before the anode treatment, a strong acid chemical or a strong alkali chemical is used, and Cooperate with grinding and cleaning surface contaminants or native oxides of the reflective body layer. One or a combination of aluminum or aluminum alloy is deposited on the surface of the pretreatment layer by physical vapor deposition (PVD), evaporation or sputtering to form a reflection enhancing layer. An optical coating is formed on the enhanced reflective layer. Finally, fluorine is formed by uniformly mixing fluorocarbon resin 70~80Wt.%, Melamine 8~12Wt.%, cyclohexanone 8~10Wt.% and additive additive 1~3Wt.%. The carbon coating is applied to the reflection enhancing layer at a rate of 20 to 60 m/min and hardened by heating at 200 to 300 ° C to form a transparent protective layer. The above additive composition comprises a combination of one or more of a leveling agent, an antifoaming agent, a catalyst, a dispersing agent and an ultraviolet absorber.

The technical features, contents, and advantages of the present invention, as well as the advantages thereof, can be understood by the reviewing committee, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and description. It is not intended to be a true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. First described.

Therefore, the present invention provides a weather resistant high reflection plate, please refer to FIG. 1 as shown in the figure. A schematic cross-sectional view of the weather-resistant high-reflection plate includes a reflective main layer 11, a pre-treatment layer 12, a reflection enhancement layer 13, an optical plating layer 14, and a transparent protective layer 15, and the reflective main layer is sequentially stacked as a substrate.

Wherein, the reflective main layer 11 mainly provides reflection, and the reflective main layer 11 is selected from one or a combination of aluminum, aluminum alloy, aluminum-containing material or aluminum-containing composite material, and aluminum purity of the aluminum alloy. More than 99.85%, and the thickness of the reflective body layer is between 0.1 and 1.2 mm; the pretreatment layer 12 is disposed on the reflective body layer 11 and is an oxide layer formed by the anode treatment of the reflective body layer 11 The treatment layer 12 comprises chromic acid, phosphoric acid, aluminum metal oxide, transition metal oxide or transition metal salt, the pretreatment layer has a thickness of between 800 and 2000 nm, and the reflection enhancement layer 13 is made of an aluminum metal layer or The aluminum alloy is deposited on the pretreatment layer 12, and the reflection enhancement layer 13 has a thickness between 10 and 300 nm and a roughness of less than 0.1 um. The reflection enhancement layer 13 has an enhanced weathering and high reflection plate in infrared light, visible light and The effect of the reflectance in the ultraviolet light wavelength range, the total reflection rate of the reflection enhancement layer in the visible light wavelength range is greater than 94%; the optical plating layer 14 is between the reflection enhancement layer 13 and the transparent protective layer 15 by the dioxide Bismuth (SiO2) or dioxide Titanium (TiO2) or both of them are formed. The thickness of the optical coating layer 14 is between 40 and 120 nm. The transparent protective layer 15 is a fluorocarbon coating and is disposed on the optical coating layer 14. The transparent protective layer 15 is It has high transmittance, colorlessness and thickness between 6~13um. It is tested by ASTM G154-06 and QUV-A 4000H. The transparent protective layer 15 has a total reflectance of more than 92% and gloss in the visible wavelength range. The loss is less than 5%. The weather-resistant high-reflection sheet of the present invention has a surface which is waterproof and corrosion-resistant, and has a total reflectance of more than 92% in the visible light wavelength range.

Referring to FIG. 2, a flow chart of a method for manufacturing a weather-resistant high-reflection sheet is shown, which comprises the following steps: Step S21: one or both of sheet or ribbon aluminum or aluminum alloy. Combination material After the material is processed and formed, the surface is further ground and polished to form a reflective body layer 11.

Step S22: using a strong acid chemical or a strong alkali chemical, and mixing and cleaning the surface contaminant or the native oxide of the reflective main layer 11.

Step S23: Anodizing is performed on the reflective body layer 11 to form a pretreatment layer 12.

Step S24: depositing one or a combination of aluminum or aluminum alloy on the surface of the pretreatment layer 12 by physical vapor deposition (PVD), evaporation or sputtering to form a reflection enhancement layer. 13.

Step S25: forming an optical plating layer 14 on the enhancement reflective layer 13.

Step S26: a fluorocarbon coating formed by uniformly mixing a fluorocarbon resin, Mesamine, cyclohexanone and an additive is coated on the optical coating layer 14 and baked by heating to form a transparent protective layer 15.

Although the foregoing is the above, the actual implementation of the present invention is not limited thereto.

In view of the above, the present invention is also applicable to reflective or photoconductor light elements and light source collection techniques, reflective elements for illumination, such as video station illumination, ceiling illumination, reflection of light deflecting panels, or enhanced illumination of vehicle lights. In addition, it can also be used in solar energy technology, such as thermal solar technology, solar power plants, solar photovoltaic starters, solar collectors collected as light, solar ovens, solar ovens. Its excellent reflectivity and anti-corrosion properties are also suitable for use as building materials in architectural exterior finishes.

The above-mentioned embodiments are intended to be illustrative only and not to limit the scope of the present invention. Any equivalent modifications and changes thereto are not included in the spirit and scope of the present invention. In the scope.

11‧‧‧reflective body layer

12‧‧‧Pretreatment layer

13‧‧‧reflection enhancement layer

14‧‧‧Optical coating

15‧‧‧Transparent protective layer

S21~S26‧‧‧Step process

Fig. 1 is a schematic cross-sectional view showing a weather resistant high reflection plate of the present invention.

Fig. 2 is a flow chart showing the manufacturing method of the weather resistant high reflection plate of the present invention.

11‧‧‧reflective body layer

12‧‧‧Pretreatment layer

13‧‧‧reflection enhancement layer

14‧‧‧Optical coating

15‧‧‧Transparent protective layer

Claims (18)

A weather-resistant high-reflection plate comprising: a reflective body layer, one of aluminum or aluminum alloy or a combination of the two; a pretreatment layer, an oxide layer disposed on the reflective body layer; A reflective enhancement layer is disposed on the pretreatment layer; and a transparent protective layer is disposed on the reflective enhancement layer. The weather-resistant high-reflection sheet of claim 1, wherein the aluminum or aluminum alloy has a purity greater than 99.85%; and the pretreatment layer is chromic acid, phosphoric acid, aluminum metal oxide, transition metal oxide or salt; The reflection enhancing layer is one of aluminum or an aluminum alloy or a combination of both. The weather-resistant high-reflection plate according to Item 1, wherein the thickness of the reflective body layer is between 0.1 and 1.2 mm; the thickness of the pre-treatment layer is between 800 and 2000 nm; The thickness of the layer is between 10 and 300 nm, the roughness is less than 0.1 um, and the thickness of the transparent protective layer is between 6 and 13 um. The weather-resistant high-reflection sheet of claim 1, further comprising an optical coating disposed between the reflection-enhancing layer and the transparent protective layer. The weather-resistant high-reflection sheet of claim 6, wherein the optical coating is one of or a combination of cerium oxide (SiO2) or titanium dioxide (TiO2). The weather-resistant high-reflection sheet of claim 6, wherein the optical coating has a thickness of between 40 and 120 nm. The weather-resistant high-reflection sheet according to the first item of the application, wherein the fluorocarbon coating is a fluorocarbon resin of 70 to 80 Wt.%, a memantine 8 to 12 Wt.%, and a cyclohexanone of 8 to 10 Wt.%. And additives A composition of 1 to 3 Wt.%, and the additive is a combination of one or more of a leveling agent, an antifoaming agent, a catalyst, a dispersing agent, and a UV absorber. The weather-resistant high-reflection sheet of the first aspect of the invention, wherein the total reflection rate of the enhanced reflection layer in the visible light wavelength range is greater than 94%; and the total reflection ratio of the transparent protection layer in the visible light wavelength range is greater than 92% Gloss loss is less than 5%. A method for manufacturing a weather-resistant high-reflection sheet, comprising the steps of: providing a reflective body layer, one of aluminum or aluminum alloy or a combination of the two; and anodizing on the reflective body layer to form a pretreatment a layer; one or a combination of aluminum or aluminum alloy is deposited on the surface of the pretreatment layer to form a reflection enhancing layer; and a fluorocarbon coating is coated on the reflection enhancing layer to form a transparent protective layer . The method for producing a weather-resistant high-reflection sheet according to claim 9, wherein the surface of the material of one or a combination of the aluminum or aluminum alloy is ground and polished. The method for manufacturing a weather-resistant high-reflection sheet according to the invention of claim 9, which further comprises the surface contaminant or the native oxide of the reflective main layer after the anode treatment with a strong acid or a strong alkali and grinding. The method for manufacturing a weather-resistant high-reflection sheet according to claim 9, wherein an optical plating layer is formed on the reflection-enhancing layer, and the transparent protective layer is formed on the optical plating layer. The method for manufacturing a weather-resistant high-reflection sheet according to claim 9, wherein the fluorocarbon coating step of the transparent protective layer is fluorocarbon resin 70-80 Wt.%, Mein-sensitive 8-12 Wt.%, ring Hexone 8~10Wt.% and additive 1~3Wt.% evenly mixed, evenly The coating is cured by heating and baking, and the additive comprises a combination of one or more of a leveling agent, an antifoaming agent, a catalyst, a dispersing agent, and an ultraviolet absorber. The method for manufacturing a weather-resistant high-reflection sheet according to claim 9, wherein the aluminum or aluminum alloy has a purity greater than 99.85%; and the pretreatment layer is chromic acid, phosphoric acid, aluminum metal oxide, transition metal oxide or salt. And the reflection enhancing layer is one of aluminum or aluminum alloy or a combination of both. The method for producing a weather-resistant high-reflection sheet according to the item 9, wherein the anodizing treatment comprises chromate treatment, phosphating treatment or anodizing treatment. The method for producing a weather-resistant high-reflection sheet according to claim 12, wherein the optical plating layer is one of cerium oxide (SiO2) or titanium oxide (TiO2) or a combination of both. The method for manufacturing a weather-resistant high-reflection sheet according to claim 13, wherein the fluorocarbon coating has a heating baking temperature of between 200 and 300 °C. The method for manufacturing a weather-resistant high-reflection sheet according to claim 9, wherein the total enhancement rate of the reflection-enhancing layer in the visible light wavelength range is greater than 94%; and the total reflection ratio of the transparent protective layer in the visible light wavelength range is greater than 92% and gloss loss less than 5%.