High-temperature-resistant lens and preparation method thereof

Abstract

The application relates to the technical field of lenses, in particular to a high-temperature-resistant lens and a preparation method thereof. The high-temperature-resistant lens comprises a lens base body and high-temperature-resistant coating layers coated on two sides of the lens base body, the high-temperature-resistant coating layers are coated by high-temperature-resistant coating liquid, and the high-temperature-resistant coating liquid comprises the following components: 100-200 parts of deionized water, 45-60 parts of methyl triethoxysilane, 15-30 parts of isopropyl alcohol, 15-60 parts of ethyl orthosilicate and 20-60 parts of silica sol. Inorganic silica coating layers formed by the combination of ethyl orthosilicate and silica sol are selected for surface modification treatment, due to the effective coating of the silicon film, inorganic coating layers can be formed at two ends of the lens, the inorganic coating layer structure can well resist high-temperature, high-humidity and high-heat environments, and therefore the high-temperature-resistant performance of the lens is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lenses, in particular to a high-temperature-resistant lens and a preparation method thereof. BACKGROUND

[0002] The eye is the most important organ for humans to obtain information from the outside world, and good vision is a lifetime of happiness. Among various correction methods for glasses, the most scientific and least harmful to the eye is still to wear appropriate glasses. Suitable optical resin materials are widely used to manufacture lenses for correcting vision, contact lenses, magnifying glasses and sunglasses, etc. According to the classification of materials, there are CR-39 resin lenses, PMMA lenses and PC space sheets, etc.

[0003] In view of the above prior art, the present inventors found that the existing common resin lenses are prone to thermal deformation in the actual use process due to their poor heat resistance and high-temperature resistance, and the cost of replacing the lens material is relatively high, which cannot meet the needs of existing low-cost lens production and use. SUMMARY

[0004] In order to improve the poor high-temperature resistance of the existing resin lenses, the present application provides a high-temperature-resistant lens and a preparation method thereof.

[0005] In the first aspect, the present application provides a high-temperature-resistant lens, which adopts the following technical scheme: a high-temperature-resistant lens, comprising a lens base body and a high-temperature-resistant coating layer coated on both sides of the lens base body, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, and the high-temperature-resistant coating liquid comprises:

[0006] 100-200 parts of deionized water;

[0007] 45-60 parts of methyl triethoxysilane;

[0008] 15-30 parts of isopropyl alcohol;

[0009] 15-60 parts of ethyl orthosilicate;

[0010] 20-60 parts of silica sol.

[0011] By adopting the above technical scheme, the inorganic silicon oxide coating layer formed by the combination of ethyl orthosilicate and silica sol is used for surface modification treatment. Due to the effective coating of the silicon film, an inorganic coating layer can be formed at both ends of the lens. The inorganic coating layer structure can well resist high temperature, high humidity and high heat environment, thereby improving the high-temperature resistance of the lens.

[0012] Preferably, the high-temperature-resistant coating liquid further comprises 3-5 parts by weight of a coupling agent, and the coupling agent comprises coupling agent KH-560, coupling agent KH-570 and coupling agent perfluorooctyltrichlorosilane.

[0013] By adopting the technical scheme, the adhesion strength and the bonding strength between the high-temperature-resistant coating layer and the lens substrate are improved through the adhesion modification of the high-temperature-resistant coating layer, so that the high-temperature-resistant coating layer has good durability in the subsequent use process.

[0014] Further, the hydrophobic property of the high-temperature-resistant lens is further improved by selecting perfluorooctyltrichlorosilane as the coupling agent, so that the adhesion time of the high-temperature-resistant coating layer is effectively improved in the subsequent cleaning and use process, thereby improving the persistent high-temperature-resistant property of the lens.

[0015] Preferably, the high-temperature-resistant lens further comprises an interface modification layer arranged between each high-temperature-resistant coating layer and the lens substrate.

[0016] Preferably, the interface modification layer is coated by an interface modification agent, and the interface modification agent comprises:

[0017] 8-15 parts of polyvinyl alcohol;

[0018] 0.5-1.5 parts of cetyltrimethylammonium bromide

[0019] 45-90 parts of water.

[0020] By adopting the technical scheme, the combination strength and the compatibility between the high-temperature-resistant coating layer and the lens substrate are further improved by arranging the interface modification layer between the high-temperature-resistant coating layer and the lens substrate, and meanwhile, the polyvinyl alcohol used in the application effectively cooperates with the cetyltrimethylammonium bromide to form a complete distribution structure between the lens substrate and the high-temperature-resistant coating layer, thereby effectively improving the coating strength of the high-temperature-resistant coating layer and improving the light transmission property of the lens as much as possible.

[0021] Preferably, the interface modification agent further comprises 1.5-3.5 parts of tannic acid by weight.

[0022] By adopting the technical scheme, the composition of the interface modification agent is further optimized, and the tannic acid effectively cooperates with the polyvinyl alcohol to inhibit the decomposition of the polyvinyl alcohol under high-temperature environment, thereby further improving the durability and the light transmission property of the interface modification layer and improving the high-temperature-resistant property of the lens.

[0023] In a second aspect, the application provides a preparation method of a high-temperature-resistant lens, comprising the following preparation steps:

[0024] S1, pretreatment: take the lens and rinse with clean water, dry, alkali pretreatment and ultrasonic vibration washing;

[0025] S2, interface modification layer preparation: take the interface modifier and coat on both sides of the pretreated lens, control the coating temperature is 18~25℃;

[0026] S3, high temperature resistant coating layer preparation: take the high temperature resistant coating liquid and coat on both sides of the interface modification layer, dry to prepare the high temperature resistant lens.

[0027] Preferably, the interface modification layer thickness of step S2 is 0.1~0.3μm.

[0028] Preferably, the high temperature resistant coating layer thickness of step S3 is 0.5~0.7μm.

[0029] By adopting the above technical scheme, the preparation method of the high temperature resistant lens is further optimized, and by optimizing the coating thickness, the coating layer is ensured to be effectively bonded and coated, and has good light transmission performance and durability.

[0030] In summary, the present application has the following beneficial effects:

[0031] First, the present application selects inorganic silica coating layer formed by combining tetraethyl orthosilicate and silica sol for surface modification treatment. Due to the effective coating of the silicon film, an inorganic coating layer can be formed at both ends of the lens. The inorganic coating layer structure can well resist high temperature, high humidity and high heat environment, thereby improving the high temperature resistance of the lens.

[0032] Second, the application selects perfluorooctyltrichlorosilane as a coupling agent to further improve the hydrophobic performance of the high temperature resistant lens, thereby effectively improving the adhesion time of the high temperature resistant coating layer during subsequent cleaning and use, thereby improving the long-lasting high temperature resistance of the lens.

[0033] Third, the present application sets an interface modification layer between the high temperature resistant coating layer and the lens substrate, which can further improve the bonding strength and compatibility between the high temperature resistant coating layer and the lens substrate. Meanwhile, the polyvinyl alcohol used in the present application effectively cooperates with cetyltrimethylammonium bromide to form a complete distribution structure between the lens substrate and the high temperature resistant coating layer, which effectively improves the coating strength of the high temperature resistant coating layer and improves the light transmission performance of the lens as much as possible. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with examples.

[0035] Preparation example 1: interface modifier 1:

[0036] Take 8kg, 0.5kg cetyltrimethylammonium bromide, 45kg water and stir to mix to prepare interface modifier 1.

[0037] Preparation Example 2: Interfacial modifier 2

[0038] Take 11 kg, 1 kg of cetyl trimethyl ammonium bromide, 65 kg of water and stir to mix, prepared interfacial modifier 2.

[0039] Preparation Example 3: Interfacial modifier 3:

[0040] Take 15 kg, 1.5 kg of cetyl trimethyl ammonium bromide, 90 kg of water and stir to mix, prepared interfacial modifier 3.

[0041] Preparation Example 4: Interfacial modifier 4:

[0042] Take 15 kg, 1.5 kg of cetyl trimethyl ammonium bromide, 90 kg of water and 1.5 kg of tannic acid and stir to mix, prepared interfacial modifier 4.

[0043] Preparation Example 4: Interfacial modifier 4:

[0044] Take 15 kg, 1.5 kg of cetyl trimethyl ammonium bromide, 90 kg of water and 2.0 kg of tannic acid and stir to mix, prepared interfacial modifier 4.

[0045] Preparation Example 5: Interfacial modifier 5:

[0046] Take 15 kg, 1.5 kg of cetyl trimethyl ammonium bromide, 90 kg of water and 3.5 kg of tannic acid and stir to mix, prepared interfacial modifier 5. Example

[0047] Example 1

[0048] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprises: 100 g of deionized water, 45 g of methyl triethoxysilane, 15 g of isopropyl alcohol, 15 g of tetraethyl orthosilicate and 20 g of silica sol with a solid content of 10%.

[0049] A method for preparing a high-temperature-resistant lens, comprising the following preparation steps:

[0050] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution and ultrasonic oscillation washing under 200W;

[0051] S2, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid and coat it on both sides of the lens substrate after oscillation washing, the coating thickness is 0.5μm, dry to prepare the high-temperature-resistant lens.

[0052] Example 2

[0053] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 150 g of deionized water, 52 g of methyl triethoxysilane, 22 g of isopropyl alcohol, 35 g of tetraethyl orthosilicate, and 40 g of 10% solid content silica sol.

[0054] A method for preparing a high-temperature-resistant lens, comprising the following preparation steps:

[0055] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place it under ultrasonic oscillation washing at 250 W;

[0056] S2, interface modification layer preparation: take the interface modifier and coat it on both sides of the pretreated lens, control the coating temperature to be 21℃, and the coating thickness to be 0.2μm;

[0057] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid and coat it on both sides of the interface modification layer, the coating thickness is 0.6μm, and it can be dried to prepare the high-temperature-resistant lens.

[0058] Example 3

[0059] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 200 g of deionized water, 60 g of methyl triethoxysilane, 30 g of isopropyl alcohol, 60 g of tetraethyl orthosilicate, and 60 g of 10% solid content silica sol.

[0060] A method for preparing a high-temperature-resistant lens, comprising the following preparation steps:

[0061] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place it under ultrasonic oscillation washing at 300 W;

[0062] S2, interface modification layer preparation: take the interface modifier and coat it on both sides of the pretreated lens, control the coating temperature to be 25℃, and the coating thickness to be 0.3μm;

[0063] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid and coat it on both sides of the interface modification layer, the coating thickness is 0.7μm, and it can be dried to prepare the high-temperature-resistant lens.

[0064] Example 4

[0065] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 100 g of deionized water, 45 g of methyl triethoxysilane, 15 g of isopropyl alcohol, 3 g of coupling agent KH-560, 15 g of tetraethyl orthosilicate, and 20 g of silica sol with a solid content of 10%. The remaining preparation scheme is the same as that of Example 1.

[0066] Example 5

[0067] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 100 g of deionized water, 45 g of methyl triethoxysilane, 15 g of isopropyl alcohol, 4 g of coupling agent KH-570, 15 g of tetraethyl orthosilicate, and 20 g of silica sol with a solid content of 10%. The remaining preparation scheme is the same as that of Example 1.

[0068] Example 6

[0069] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 100 g of deionized water, 45 g of methyl triethoxysilane, 15 g of isopropyl alcohol, 5 g of coupling agent perfluorooctyltrichlorosilane, 15 g of tetraethyl orthosilicate, and 20 g of silica sol with a solid content of 10%. The remaining preparation scheme is the same as that of Example 1.

[0070] Example 7

[0071] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer being coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprising: 100 g of deionized water, 45 g of methyl triethoxysilane, 15 g of isopropyl alcohol, 5 g of coupling agent perfluorooctyltrichlorosilane, 15 g of tetraethyl orthosilicate, and 20 g of silica sol with a solid content of 10%.

[0072] A method for preparing a high-temperature-resistant lens, comprising the following preparation steps:

[0073] S1, pretreatment: taking a lens and washing it with clean water, drying it, then pretreating it with 0.5 mol / L sodium hydroxide solution and ultrasonically washing it under 250 W;

[0074] S2, interface modification layer preparation: taking an interface modifier 1 and coating it on both sides of the pretreated lens, controlling the coating temperature to be 21℃ and the coating thickness to be 0.2μm;

[0075] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid again and coat on both sides of the interface modification layer, the coating thickness is 0.6 μm, dry to prepare the high-temperature-resistant lens.

[0076] Example 9

[0077] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprises: deionized water 100 g, methyl triethoxysilane 45 g, isopropyl alcohol 15 g, 5 g coupling agent perfluorooctyltrichlorosilane, tetraethyl orthosilicate 15 g and solid content 10% silica sol 20 g.

[0078] A high-temperature-resistant lens preparation method, comprising the following preparation steps:

[0079] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place under ultrasonic vibration washing at 250 W;

[0080] S2, interface modification layer preparation: take the interface modifier 2 and coat on both sides of the pretreated lens, control the coating temperature to be 21℃, and the coating thickness is 0.2 μm;

[0081] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid again and coat on both sides of the interface modification layer, the coating thickness is 0.6 μm, dry to prepare the high-temperature-resistant lens.

[0082] Example 10

[0083] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprises: deionized water 100 g, methyl triethoxysilane 45 g, isopropyl alcohol 15 g, 5 g coupling agent perfluorooctyltrichlorosilane, tetraethyl orthosilicate 15 g and solid content 10% silica sol 20 g.

[0084] A high-temperature-resistant lens preparation method, comprising the following preparation steps:

[0085] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place under ultrasonic vibration washing at 250 W;

[0086] S2, interface modification layer preparation: take the interface modifier 3 and coat on both sides of the pretreated lens, control the coating temperature to be 21℃, and the coating thickness is 0.2 μm;

[0087] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid again and coat on both sides of the interface modification layer, the coating thickness is 0.6 μm, dry to prepare the high-temperature-resistant lens.

[0088] Example 11

[0089] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprises: deionized water 100 g, methyl triethoxysilane 45 g, isopropyl alcohol 15 g, 5 g coupling agent perfluorooctyltrichlorosilane, tetraethyl orthosilicate 15 g and solid content 10% silica sol 20 g.

[0090] A high-temperature-resistant lens preparation method, comprising the following preparation steps:

[0091] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place under ultrasonic vibration washing at 250 W;

[0092] S2, interface modification layer preparation: take interface modifier 4 and coat on both sides of the pretreated lens, control the coating temperature to be 21℃, and the coating thickness is 0.2 μm;

[0093] S3, high-temperature-resistant coating layer preparation: take the high-temperature-resistant coating liquid again and coat on both sides of the interface modification layer, the coating thickness is 0.6 μm, dry to prepare the high-temperature-resistant lens.

[0094] Example 12

[0095] A high-temperature-resistant lens, comprising a lens substrate and a high-temperature-resistant coating layer coated on both sides of the lens substrate, the high-temperature-resistant coating layer is coated by a high-temperature-resistant coating liquid, the high-temperature-resistant coating liquid comprises: deionized water 100 g, methyl triethoxysilane 45 g, isopropyl alcohol 15 g, 5 g coupling agent perfluorooctyltrichlorosilane, tetraethyl orthosilicate 15 g and solid content 10% silica sol 20 g.

[0096] A high-temperature-resistant lens preparation method, comprising the following preparation steps:

[0097] S1, pretreatment: take the lens and rinse with clean water, dry, then pretreat with 0.5 mol / L sodium hydroxide solution, and place under ultrasonic vibration washing at 250 W;

[0098] S2, interface modification layer preparation: take interface modifier 5 and coat on both sides of the pretreated lens, control the coating temperature to be 21℃, and the coating thickness is 0.2 μm;

[0099] S3, high-temperature-resistant coating layer preparation: take high-temperature-resistant coating liquid to coat on both sides of the interface modification layer, the coating thickness is 0.6 μm, dry to prepare the high-temperature-resistant lens.

[0100] It should be noted that the lens substrate used in embodiments 1-12 of the present application includes but is not limited to polymethyl methacrylate substrate lens.

[0101] Performance test

[0102] The high-temperature-resistant lenses prepared in embodiments 1-12 are detected, and the specific detection method is as follows:

[0103] The prepared high-temperature-resistant lenses are respectively placed in an environment with a temperature of 95℃, 105℃ and 115℃ and a humidity of 65% for 100h, then cooled to room temperature, dipped with degreasing gauze and alcohol, and uniformly rubbed on the lens sample, and the peeling of the coating layer on the surface of the sample lens is observed after 50 times of rubbing, and the detection results are shown in Table 1:

[0104] Table 1 Performance test table

[0105]

[0106] It can be found from the data of embodiments 1-12 that the inorganic silica coating layer formed by selecting tetraethyl orthosilicate and silica sol for surface modification treatment can form an inorganic coating layer at both ends of the lens due to the effective coating of the silicon film, and the inorganic coating layer structure can resist high temperature, high humidity and high heat environment, thereby improving the high-temperature-resistant performance of the lens.

[0107] It can be found from the data of embodiments 1-3 and embodiments 4-6 that the use of perfluorooctyltrichlorosilane as a coupling agent in the present application can further improve the hydrophobic performance of the high-temperature-resistant lens, thereby effectively improving the adhesion time of the high-temperature-resistant coating layer during subsequent cleaning and use, thereby improving the long-lasting high-temperature-resistant performance of the lens.

[0108] Further combining the data analysis of embodiments 7-12, the interface modification layer between the high-temperature-resistant coating layer and the lens substrate can further improve the bonding strength and compatibility between the high-temperature-resistant coating layer and the lens substrate, and the use of polyvinyl alcohol in the present application can form a complete distribution structure between the lens substrate and the high-temperature-resistant coating layer due to the effective cooperation with cetyltrimethylammonium bromide, thereby effectively improving the coating strength of the high-temperature-resistant coating layer.

[0109] The embodiments are only illustrative of the present application, and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A high-temperature resistant lens, characterized in that, It includes a lens substrate and a high-temperature resistant coating layer covering both sides of the lens substrate. The high-temperature resistant coating layer is formed by coating with a high-temperature resistant coating liquid, which comprises the following substances in parts by weight: 100-200 parts deionized water; 45-60 parts of methyltriethoxysilane; Isopropanol 15-30 parts; 15-60 parts of tetraethyl orthosilicate; 20-60 parts of silica sol; the high-temperature resistant lens further includes an interface modification layer, which is disposed between each high-temperature resistant coating layer and the lens substrate; the interface modification layer is formed by coating with an interface modifier, which comprises the following substances in parts by weight: 8-15 parts of polyvinyl alcohol; 0.5–1.5 parts of hexadecyltrimethylammonium bromide 45-90 parts water; the interface modifier also includes 1.5-3.5 parts by weight of tannic acid.

2. The high-temperature resistant lens according to claim 1, characterized in that, The high-temperature resistant coating liquid also includes 3 to 5 parts by weight of coupling agent, which includes coupling agent KH-560, coupling agent KH-570 and coupling agent perfluorooctyltrichlorosilane.

3. A method for preparing a high-temperature resistant lens according to any one of claims 1 to 2, characterized in that, The preparation steps include the following: S1. Pretreatment: Take the lens and rinse it with clean water. After drying, perform alkaline pretreatment and ultrasonic oscillation rinsing. S2. Preparation of interface modification layer: Take the interface modifier and coat it on both sides of the pretreated lens, and control the coating temperature to be 18-25℃. S3. Preparation of high-temperature resistant coating layer: Apply the high-temperature resistant coating liquid to both sides of the interface modification layer and dry to obtain the high-temperature resistant lens.

4. The method for preparing a high-temperature resistant lens according to claim 3, characterized in that, The thickness of the interface modification layer described in step S2 is 0.1–0.3 μm.

5. The method for preparing a high-temperature resistant lens according to claim 3, characterized in that, The thickness of the high-temperature resistant coating layer mentioned in step S3 is 0.5 to 0.7 μm.

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