WO2014025092A1 - Carbon nanotube glass lens, and method for manufacturing same - Google Patents

Abstract

The present invention relates to a carbon nanotube glass lens comprising carbon nanotubes. The present invention relates to a method for manufacturing the carbon nanotube glass lens, comprising: a material mixing step of mixing a diallyl terephthalate oligomer or diallyl isophthalate oligomer, a diallyl orthophthalate oligomer, dibutylphthalate, and carbon nanotubes to prepare a mixture material; and a lens production step of injecting the mixture material into a mold, and heating the mixture material to produce a glass lens. The carbon nanotube glass lens and the method for manufacturing same enable significantly excellent optical effects to be achieved, and superior resistance against scratches, abrasion, etc. to be exhibited, thus providing high durability and chemical stability against a variety of chemicals, corrosion, etc.

Description

Carbon Nanotube Glasses Lens and Manufacturing Method

The present invention relates to a carbon nanotube spectacle lens, comprising a carbon nanotube as a raw material of the spectacle lens, and a carbon nanotube spectacle lens for carbon nanotube coating treatment on the surface of the spectacle lens.

The present invention also relates to a carbon nanotube spectacle lens manufacturing method, comprising a carbon nanotube as a raw material of the spectacle lens, and to a carbon nanotube spectacle lens manufacturing method for carbon nanotube coating treatment of the spectacle lens surface.

In general, spectacle lenses form a plurality of coating layers on the outer surface of a transparent plastic or glass substrate to enhance the strength and hardness of the lens and to reduce the reflectance.

The impact resistance of the lens is an important property in terms of safety to prevent breakage of the lens as a property to resist external impact, and provides an improvement in impact resistance by reinforcing the surface strength and hardness of the spectacle lens.

Plastic lenses are used in the production of various spectacle lenses today because they are lightweight and have excellent impact resistance, and are easy to dye as compared to glass lenses.

Plastic lenses have the disadvantage that they can be deformed under high temperature processing conditions due to their light weight, high impact strength but easy to scratch, high chromatic aberration (low ABBE value) and low glass transition temperature (Tg). .

Patent Publication No. 10-2011-0113354 describes as a prior art, currently used plastic spectacle lenses are classified into a low refractive index lens, a medium refractive index lens, a high refractive index lens, an ultra high refractive index lens and the like according to the refractive index. The low refractive index lens has a refractive index of nd 1.49, the medium refractive index lens has a nd1.56, the high refractive index lens has a nd 1.60, and the ultra high refractive index lens has a nd 1.64 to 1.74.

The low refractive index eyeglass lens is mainly made of diethylene glycol bisallyl carbonate resin (“CR-39”) resin, the medium refractive index eyeglass lens is made of diallyl phthalate resin, and the high refractive index eyeglass lens is made of brominated epoxy acrylate and thio Urethane-based resins are used, and thiourethane-based and episulfide-based resins are mainly used for ultra high refractive index eyeglass lenses.

The present invention relates to a diallyl phthalate resin used in a medium refractive index spectacle lens and to provide a method for improving the impact resistance of a lens made of the resin. Impact resistance among the characteristics of the lens is a characteristic that is resistant to external shocks without being damaged, which is very important in terms of safety of eyewear wearers. However, the diallyl phthalate spectacle lens according to the present invention has a drawback that chemically impact resistance is weaker than that of other plastic spectacle lenses.

A monomer composition for plastic optical materials using a diallyl phthalate resin composition is disclosed in Japanese Patent Laid-Open No. 2005-15670. This patent application contains 0.01 to 10 parts by weight of a dialkyl peroxy dicarbonate-based radical polymerization initiator component having isopropyl-n-propyl peroxy dicarbonate as an essential component with respect to 100 parts by weight of a polymer containing a diallyl compound as a main component. A monomer composition for plastic optical materials is disclosed. However, this resin composition also turns out to have a limit in showing good impact strength.

In addition, a conventional problem with the diallyl phthalate-based resin composition having a medium refractive index is that even when the lens is molded with an oligomer synthesized by transesterifying polyhydric alcohol to the diallyl phthalate monomer, the strength improvement effect is very insignificant.

In particular, if the molar ratio of the polyhydric alcohol is increased, the effect of improving the strength to some extent, but the oligomer solution viscosity is sharply increased, there is a difficulty in mold injection and the releasability tends to worsen after heat curing.

Therefore, diallyl orthophthalate based on 100 parts by weight of the diallyl terephthalate oligomer (A), diallyl isophthalate oligomer (B), or an oligomer (hereinafter, 'base resin') consisting of (A) and (B). An impact resistant plastic spectacle lens resin composition comprising 10 to 40 parts by weight of an oligomer (C) and 3 to 10 parts by weight of dibutyl fumarate (D) is disclosed.

As disclosed in the prior art in Korean Patent Publication No. 10-0506300, plastic materials have been used for the manufacture of spectacle lenses for many years. Plastic offers many advantages for the wearer over glass, especially its low density, making the lens lighter and the impact strength of the lens larger. In contrast, plastic lenses are easy to scratch, have high chromatic aberrations (low ABBE values) and low glass transition temperatures (Tg), which can be deformed under high temperature processing conditions, causing the lens to “distort” or Or the degree of optical distortion becomes large. Plastic lenses also generally have a lower refractive index than glass, which increases the thickness of the lens and tends to reduce aesthetic appeal. Standard “CR-39” type lenses made of diethylene glycol bis (allyl carbonate) have a refractive index of 1.498.

Advances in technology have enabled improvements in plastic lens performance. The coating improved scratch resistance.

Some plastics have relatively high ABBE values and are suitable for minimizing the effects of chromatic aberration.

Advances in mechanical and optical lens processing apparatus and methods have allowed the use of materials with low glass transition temperatures. High refractive index plastic and physical lens design improvements have helped to improve the aesthetic appeal of plastic lenses.

These improvements have been accepted in the plastic lens market, and since plastic lenses make up the majority of eyewear in the United States, excellent eyeglass lenses are increasing expectations for performance having the following characteristics.

And resins prepared using phthalic anhydride are commonly referred to as "ortho resins"; What is made of isophthalic acid is called "iso resin".

As for the desirable properties for producing spectacle lenses, conventional iso resins having excellent scratch resistance generally have a slow coloring speed. In contrast, conventional ortho resins are usually easy to scratch, but have a high coloration rate. All unsaturated polyester resins polymerize somewhat unevenly, causing internal optical distortion or visible “waves”.

As mentioned above, styrene is commonly used as crosslinker diluent monomer with unsaturated polyester compositions. As the proportion of styrene increases, the refractive index also increases. However, the use of high concentrations of styrene results in large heat generation of the reaction in the polymerizing composition that causes the optical distortion to form in the lens, resulting in optical distortion of the lens. It is not easy to maintain high refractive index and color while improving optical uniformity (reducing optical distortion) and increasing the coloration speed in unsaturated polyester resin based spectacle lens compositions.

In order to solve this problem, Korean Patent No. 10-0506300 discloses a method of disposing a casting composition in a mold cavity formed between adjacent non-planar mold faces, and treating the composition under conditions sufficient to polymerize and crosslink the composition. A method of casting a crosslinked casting composition with a curved spectacle lens having a refractive index of 1.50 or more comprising: 35 to 63% by weight of unsaturated polyester resin, 1 to 20% by weight of allyl ester monomer, 1 to 20% by weight of acrylate and Additives selected from the group consisting of mixtures thereof, α-methyl styrene, terpinolene, γ-terpinene, dilauryl thiodipro, to inhibit the rate of polymerization of the composition in an amount sufficient to prevent the formation of spiny waves in the cured composition An exothermic inhibitor selected from the group consisting of cypionate, 4-t-butylpyrocatechol, 3-methyl catechol and mixtures thereof The method of including is disclosed.

In addition, as described in the prior art Patent Publication No. 10-0266788, in general, the spectacle lens has a plurality of in order to reinforce the strength and hardness on the outer surface of the transparent plastic or glass substrate, and to lower the reflectance of the lens A coating layer is formed. Referring to this, the spectacle lens has a hard coating layer formed of silicon-based water glass on upper and lower surfaces of a transparent plastic or glass substrate, and a first silicon oxide (SiO ₂ ) layer on the surface of the hard coating layer. A multi-coating layer is formed by sequentially coating a first zirconium oxide (ZrO ₂ ) layer, a second silicon dioxide (SiO ₂ ) layer, a second zirconium oxide (ZrO ₂ ) layer, and a third silicon oxide (SiO ₂ ) layer sequentially. On the outer surface of the lens, a water repellent coating layer having a water film preventing effect is formed. The conventional spectacle lens of this structure is a plastic substrate whose main material is a non-conductive material, so if the surface of the lens is wiped with gauze or rubbed on clothes, hair, etc., static electricity is generated on the lens and foreign matter such as dust in the air is easily attached. There is a problem that needs to be cleaned frequently and dirty. In addition, the spectacle lens accumulates fatigue in the eyes of a user due to reflection of light and deterioration of blood circulation when worn for a long time, and causes a disease in the eyes when contaminated with bacteria.

In order to improve these problems, the prior art is a spectacle lens having a plurality of coating layers formed on the surface of the substrate, the primer layer coated with an epoxy resin, polyurethane-based resin on a predetermined layer of the spectacle lens; An ITO layer coated with a conductive oxide on a predetermined layer of the spectacle lens; Disclosed is a spectacle lens, characterized in that a ceramic layer emitting far infrared rays is coated on a predetermined layer of the spectacle lens.

Carbon nanotubes are lightweight and have strong tensile force and are being actively researched as new materials used in lenses and electronics.

In other words, in the prior art, a technique of applying carbon (Dimond like Carbon) similar to diamond on the spectacle lens has been developed, but due to technical problems and difficulties in production cost due to the difficulty of depositing a large area, There were many difficulties in commercialization.

The present invention has been made to solve the above problems, by forming a tube-shaped carbon in a predetermined layer of the lens in a vertical, horizontal or other angle can be expected to deposit a large area, thereby reducing the production cost In addition, to provide a carbon nanotube spectacle lens with a variety of optical, physical, chemical stability and superiority of CNT.

In addition, the present invention has been made to solve the above problems, by forming a tube-shaped carbon in a predetermined layer of the lens at a vertical, horizontal or other angle can be expected to deposit a large area, thereby increasing the production cost It is possible to reduce and provide a method of manufacturing carbon nanotube spectacle lenses with various optical, physical and chemical stability and superiority of CNT.

The present invention relates to a carbon nanotube spectacle lens, the carbon nanotube spectacle lens, characterized in that the spectacle lens comprises a carbon nanotube.

The present invention relates to a method for producing a carbon nanotube spectacle lens, in the method for producing a carbon nanotube spectacle lens, diallyl terephthalate oligomer or diallyl isophthalate oligomer, diallyl orthophthalate oligomer, dibutyl fumarate, carbon nano A raw material mixing step of preparing a raw material by mixing the raw material including a tube: a lens manufacturing step of manufacturing the spectacle lens by putting the mixed raw material into the mold and heated to elevated temperature.

The present invention is very excellent in the optical effect, and also exhibits a strong resistance to scratches and abrasion, etc. has a strong effect of strong durability and strong chemical stability against various chemicals and corrosion.

The present invention is a carbon nanotube spectacle lens comprising a carbon nanotube (CNT; Carbon Nano-Tube), in the conventional spectacle lens made of a transparent plastic material, glass or synthetic material, carbon in the spectacle lens It is a spectacle lens with excellent optical, physical and chemical stability effects, including nanotubes.

In addition, the carbon nanotube spectacle lens according to the present invention has a plurality of coating layers formed on a surface thereof, and a carbon nanotube layer is formed in the coating layer.

The spectacle lens is prepared by mixing carbon nanotubes in powder form and mixing carbon nanotubes with a resin. In addition, carbon nanotubes are deposited on the lens surface to form carbon nanotubes as a single layer.

In an embodiment, the carbon nanotube spectacle lens of the present invention is formed with a carbon nanotube layer on upper and lower surfaces of the lens, a hard coating layer is formed on the surface of the carbon nanotube coating layer, and a second surface is formed on the surface of the hard coating layer. Silicon monooxide (SiO ₂ ) layer, zirconium oxide (ZrO ₂ ) layer, silicon dioxide (SiO ₂ ) layer, zirconium dioxide (ZrO ₂ ) layer, and silicon tertiary oxide (SiO ₂ ) layer As a multi-coating layer is repeatedly coated with a water repellent coating layer is formed on the outer surface of the lens.

The carbon nanotube layer is formed on the upper and lower outer surfaces of the lens, the surface of the carbon nanotube layer is formed with a multi-coating layer is sequentially coated with a silicon oxide layer and a second zirconium oxide layer sequentially.

The spectacle lens is formed by mixing carbon nanotubes with a resin, that is, a diallyl terephthalate oligomer or diallyl isophthalate oligomer (hereinafter, 'base resin') or diallyl in the spectacle lens which is a raw material of the spectacle lens. It includes a phthalate oligomer, dibutyl fumarate, carbon nanotubes.

The carbon nanotubes form a tube having a diameter ranging from a micrometer size to a nanometer size, so that the optical effect is more excellent than a lens having a mesh of silicon oxide (SiO ₂ ).

As described above, the spectacle lens of the present invention includes carbon nanotubes, and 10 to 40 parts by weight of diallyl orthophthalate oligomer, and dibutyl fumarate 3 based on 100 parts by weight of diallyl terephthalate oligomer or diallyl isophthalate oligomer. 10 parts by weight, and 2 to 5 parts by weight of carbon nanotubes.

As is generally known, the method of heating is heated at elevated temperature, injecting the stirred and mixed raw material into a metal mold, and then heating it in an oven. Immediately, the temperature was maintained at 30 to 40 ° C. for 2 hours, the temperature was heated at 41 to 45 ° C. for 3 hours, the temperature was heated at 110 to 120 ° C. for 11 hours, the temperature was heated at 121 to 130 ° C. for 1 hour, and at 60 ° C. After maintaining for about 3 hours, the produced spectacle lens is demolded.

Carbon nanotubes are light and have a high tensile strength, and when mixed with a resin, the weight hardly changes but increases strength.

The carbon nanotube coating layer is separately formed on the outer surface of the spectacle lens made of transparent plastic or glass, and thus shows a strong resistance to scratches and abrasion, thereby forming an spectacle lens having excellent durability and excellent optical effect with chemical stability.

The carbon nanotube deposition coating layer is formed on the surface of the spectacle lens, and a gas such as methane, ethane, propane or acetylene of carbon compound series is used for the deposition of carbon forming the tube, and the deposition method thereof. In general, carbon nanotubes are coated in a single layer at a horizontal, vertical or other angle by using a method widely used in coating techniques such as chemical vapor deposition (CVD), hot filament, arcdischarge, and laser ablation.

Thus, by coating the tube-shaped carbon on the surface of the spectacle lens at a vertical, horizontal or other angle, the spectacle lens having an optically excellent property can be obtained, and a high strength carbon film is formed to exhibit strong resistance to scratches and abrasion. Highly durable spectacle lenses can be obtained.

In addition, the tubular carbon film has a strong chemical stability against various chemicals and corrosion.

In this way, in addition to spectacle lenses, excellent optical lenses such as camera lenses and telescope lenses are manufactured.

As described above, the present invention exhibits a strong resistance to scratches, abrasion, and the like, thereby obtaining a highly durable spectacle lens. In addition, it is possible to obtain a spectacle lens having a light weight, strong strength, high refractive index and a reduced thickness of the lens, and optically excellent properties with low chromatic aberration.

In addition, the tubular carbon film has a strong chemical stability against various chemicals and corrosion.

Claims (3)

1. In the carbon nanotube spectacle lens, the spectacle lens comprises a carbon nanotube spectacle lens
2. According to claim 1, wherein the surface of the spectacle lens is a carbon nanotube spectacle lens, characterized in that the carbon nanotube coating layer is further formed
3. In the carbon nanotube spectacle lens manufacturing method, a raw material for preparing a mixed raw material by mixing a raw material containing diallyl terephthalate oligomer or diallyl isophthalate oligomer, diallyl orthophthalate oligomer, dibutyl fumarate and carbon nanotube Mixing step: The carbon nanotube spectacle lens manufacturing method comprising a;