High-chemical-stability optical lens based on vacuum coating and coating process thereof

Abstract

The invention discloses a high-chemical-stability optical lens based on vacuum coating and a coating process thereof, and relates to the technical field of optical lenses. The coating process of the optical lens with high chemical stability comprises the following steps: step 1, carrying out pretreatment including activating treatment on a resin lens matrix to obtain a pretreated resin lens; 2, evaporating a vacuum coating layer on the front surface of the pretreated resin lens by adopting a vacuum coating process to obtain a coated resin lens; and 3, activating the coated resin lens, uniformly coating the surface of the coated resin lens with the high-performance modified slurry, drying, and forming high-performance film layers on the two surfaces of the coated resin lens to obtain the optical lens with high chemical stability. Finally, the optical lens with excellent performance and high chemical stability is comprehensively prepared, and the optical lens has excellent optical performance, environment weather resistance and anti-fog performance.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and in particular to a vacuum-coated optical lens with high chemical stability and a coating process thereof. Background Art

[0002] Optical resin lenses, due to their lightweight, impact-resistant, and easy-to-process properties, have gradually replaced traditional glass lenses as the mainstream. However, resin materials inherently suffer from defects such as poor weather resistance, low surface hardness, and susceptibility to chemical corrosion. In particular, they are susceptible to yellowing, cracking, and film shedding in high-temperature, high-humidity, UV radiation, or acidic or alkaline environments, severely impacting optical performance and lifespan. To enhance their stability, the industry generally utilizes surface coating technologies, primarily vacuum coating and slurry-coated functional coatings.

[0003] In order to enhance the optical performance of optical lenses and improve their environmental weather resistance, the present invention combines the above two processes to comprehensively prepare an optical lens with high chemical stability, which is of great significance. Summary of the Invention

[0004] The object of the present invention is to provide an optical lens with high chemical stability based on vacuum coating and a coating process thereof, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A high chemical stability optical lens based on vacuum coating comprises a high performance film layer arranged on the rear surface of a resin lens substrate, a vacuum coating layer arranged on the front surface of the resin lens, and a high performance film layer arranged on the surface of the vacuum coating layer.

[0007] A vacuum coating-based coating process for optical lenses with high chemical stability comprises the following steps:

[0008] Step 1: cleaning, removing static electricity, and activating the resin lens substrate to obtain a pre-treated resin lens;

[0009] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0010] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly applied to the surface of the coated resin lens and dried at 50-70°C for 3-9 hours to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0011] Furthermore, the specific process of the cleaning treatment is:

[0012] (1) Place the resin lens in deionized water, ultrasonically clean it at 60-70°C for 2-4 minutes, and then spray clean it to complete the cleaning process;

[0013] (2) placing the resin lens after the primary cleaning into ST-A100 resin lens cleaning agent and ultrasonically cleaning it at 40-60°C for 2-3 times, each time for 1-2 minutes, to complete the secondary cleaning;

[0014] (3) Place the resin lens after secondary cleaning in deionized water and ultrasonically clean it at 40-60°C for 3-5 times, each time for 1-2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 70-80°C for 3-9 hours to complete the cleaning.

[0015] Furthermore, the static electricity removal method is as follows: after cleaning, at room temperature and in a dust-free environment, the surface of the resin lens is subjected to static electricity removal using a HY-1301 high-efficiency electrostatic dust removal gun.

[0016] Furthermore, the specific method of the activation treatment is:

[0017] (1) After removing static electricity, the resin lens is treated using air plasma technology;

[0018] (2) adding 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol into a reaction vessel at a mass ratio of (0.1-1):5:15, adding acetic acid to adjust the pH of the solution to 5-6, and stirring for 20-40 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate;

[0019] (3) The resin lens after plasma treatment is placed in 1,2-bis(trimethoxysilyl)ethane hydrolyzate, soaked at 40-50°C for 1-3 hours, taken out, and dried at 50-70°C for 3-9 hours to complete the activation.

[0020] Furthermore, the relevant parameters of the plasma technology are: air flow rate of 200-400 mL / min, power of 50-150 W, and treatment time of 10-30 min.

[0021] Furthermore, the vacuum coating process is as follows: the coating chamber temperature is set at 30-55°C, and the vacuum is pumped to 1.0×10 -5 ~1.0×1 -3 Pa, anode voltage is 100-120 V, anode current is 1-2 A, oxygen flow rate is 10-50 sccm, and argon flow rate is 0-50 sccm.

[0022] Furthermore, the vacuum coating layer is a multi-layer film, which is composed of a silicon dioxide layer with a thickness of 100 to 120 nm, a zirconium oxide layer with a thickness of 25 to 40 nm, a silicon dioxide layer with a thickness of 30 to 50 nm, a zirconium oxide layer with a thickness of 25 to 40 nm, a silicon dioxide layer with a thickness of 100 to 120 nm, an aluminum oxide layer with a thickness of 30 to 50 nm, a zinc oxide layer with a thickness of 20 to 30 nm, a titanium dioxide layer with a thickness of 20 to 30 nm, and a silicon dioxide layer with a thickness of 80 to 100 nm.

[0023] Furthermore, the high-performance modified slurry includes the following raw material components: by weight, 10 to 15 parts of polyethylene glycol 1000, 10 to 20 parts of polyethylene glycol-glycidol-hindered phenol ester, 10 to 20 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water.

[0024] Furthermore, the preparation method of the polyethylene glycol-glycidol-hindered phenol ester is:

[0025] (1) Add 25 wt% potassium methoxide solution to polyethylene glycol 400, stir and mix for 1 to 2 hours, and then remove methanol by distillation under reduced pressure;

[0026] (2) Under nitrogen protection, the mixture in (1) is heated to 80-100° C., and glycidol and DMC catalyst are slowly added thereto, and the mixture is stirred for reaction for 6-12 hours. After separation and purification, a polyethylene glycol-glycidol branched product is obtained;

[0027] (3) Adding the polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine, stirring and reacting for 12 to 36 hours, and purifying and separating to obtain polyethylene glycol-glycidol-hindered phenol ester.

[0028] Furthermore, the ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL.

[0029] Furthermore, the mass ratio of polyethylene glycol 400, glycidol and DMC catalyst is 1:(5-10):(0.25-0.5).

[0030] Furthermore, the mass ratio of the polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:(0.2-0.3):(0.1-0.2):(0.01-0.02).

[0031] Polyethylene glycol 400 was deprotonated with potassium methoxide solution and then reacted with glycidol to obtain polyethylene glycol-glycidol branched products. Finally, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid was grafted onto the polyethylene glycol-glycidol branched products through Sterglick esterification to obtain polyethylene glycol-glycidol-hindered phenol esters.

[0032] Furthermore, the preparation method of the polyethylene glycol-silane-nanoparticles is:

[0033] (1) Add 25 wt% potassium methoxide solution to polyethylene glycol 400, stir and mix for 1 to 2 hours, and then remove methanol by distillation under reduced pressure for later use;

[0034] (2) In the dark, 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol were added to a reaction vessel in a mass ratio of (0.1-1):5:15, and stirred at 50-60° C. for 20-40 minutes to obtain a 3-glycidyloxypropyltrimethoxysilane hydrolyzate;

[0035] (3) adding nano-titanium oxide, nano-zinc oxide, and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to a hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 1 to 3 hours, and separating and purifying to obtain modified nanoparticles;

[0036] (4) Under nitrogen protection, the mixture in (1) is heated to 80-100° C., and then the modified nanoparticles and DMC catalyst are slowly added thereto, and the mixture is stirred for reaction for 6-12 hours. After separation and purification, polyethylene glycol-modified nanoparticle branched products are obtained.

[0037] Furthermore, the ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL.

[0038] Furthermore, the average particle size of the nano titanium oxide and nano zinc oxide is 5 to 10 nm.

[0039] Furthermore, the mass ratio of the polyethylene glycol 400, the modified filler and the DMC catalyst is 1:(1-2):(0.03-0.05).

[0040] Polyethylene glycol 400 was deprotonated with potassium methoxide solution and then reacted with modified nanoparticles modified with 3-glycidyloxypropyltrimethoxysilane to prepare polyethylene glycol-silane-nanoparticles.

[0041] Furthermore, the thickness of the high-performance film layer is 0.2 to 0.4 μm.

[0042] Furthermore, the optical lens with high chemical stability is prepared by the coating process of the optical lens with high chemical stability based on vacuum coating.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] (1) The present invention performs three-step treatments on the resin lens substrate, namely, cleaning, destaticizing, and activating, to enhance the bonding between the substrate and the vacuum coating layer; the vacuum coating layer is subsequently treated with the same activation treatment method to enhance its bonding with the high-performance film layer. As a result, each film layer on the optical lens has excellent bonding properties with the substrate and between each film layer, so that the optical lens can maintain stable performance for a long time under various harsh environments. This is the basis for ensuring the high chemical stability of the optical lens.

[0045] (2) The present invention adopts a vacuum coating process, and sequentially vapor-deposit multiple layers of combined film layers on the pre-treated resin lens, thereby comprehensively enhancing the optical performance and corrosion resistance of the optical lens. In the present invention, silicon dioxide and zirconium oxide are first alternately vapor-deposited to ensure the light transmittance and anti-reflection ability of the resin lens. Vapor-depositing aluminum oxide as a transition layer can, on the one hand, greatly avoid the potential danger of cracking of the film layer due to excessive coating thickness, and on the other hand, the aluminum oxide layer can improve the subsequent bonding performance of zinc oxide and titanium dioxide with it. Zinc oxide and titanium dioxide are sequentially vapor-deposited on the aluminum oxide layer, among which zinc oxide can greatly block long-wave ultraviolet rays, titanium dioxide mainly blocks medium-wave ultraviolet rays and short-wave ultraviolet rays, and silicon dioxide can also play a physical shielding effect on ultraviolet rays. The combination of the three effectively enhances the anti-ultraviolet performance of the optical lens. In addition, under the comprehensive effect of the multiple layers of combined film layers, the corrosion resistance of the optical lens is also enhanced.

[0046] (3) To further enhance the environmental weather resistance of the optical lens, the present invention prepares a high-performance modified slurry comprising polyethylene glycol 1000, polyethylene glycol-glycidol-hindered phenol ester, polyethylene glycol-silane-nanoparticles, and deionized water, and applies the slurry to a coated resin lens to obtain an optical lens with high chemical stability. Although the transmittance of the coated lens is slightly lower than that of the original coated resin lens after coating, in the long run, the optical performance of the optical lens is enhanced because the environmental weather resistance of the optical lens is enhanced. In the high-performance modified slurry, the polyethylene glycol-glycidol-hindered phenol ester contains a hindered phenol structure, which can prevent the high-performance coating and the resin lens matrix from being oxidized; the polyethylene glycol-silane-nanoparticles introduce UV-resistant titanium dioxide and zinc oxide, which can improve the density of the coating on the one hand and enhance the UV blocking ability of the resin lens on the other hand. Moreover, the siloxane bonds contained therein can form a tighter bond with the vacuum coating layer; finally, polyethylene glycol 1000 is used as an adhesive and dispersant to comprehensively formulate a high-performance modified slurry to effectively enhance the environmental weather resistance of the optical lens. In addition, the high-performance modified slurry makes the optical lens have excellent hydrophilicity, thereby also giving the optical lens a certain anti-fog performance.

[0047] In summary, the present invention comprehensively prepares a highly chemically stable optical lens with excellent optical properties, environmental weather resistance, and anti-fog properties. DETAILED DESCRIPTION

[0048] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0049] It should be noted that the following parts are calculated by weight, and the purchasers of all raw materials involved in the present invention include, without any special restrictions, the following examples:

[0050] In the following examples, CR-39 resin lenses were purchased from Jiangsu Ruier Optical Co., Ltd.

[0051] ST-A100 resin lens cleaner was purchased from Shanghai Suitai Trading Co., Ltd.

[0052] 1,2-Bis(trimethoxysilyl)ethane, 99% purity, polyethylene glycol 1000, product number 1546489, polyethylene glycol 400, product number 1546445, potassium methoxide solution, 25 wt% purity, product number 60402, glycidol, 99% purity, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 99% purity, product number 367079, 1,3-dicyclohexylcarbodiimide, 99% purity, 4-dimethylaminopyridine, 99% purity, 3-glycidoxypropyltrimethoxysilane, 98% purity, product number 440167, sodium dodecyl sulfate, 99% purity, were purchased from Merck.

[0053] DMC catalyst, i.e., bimetallic hydride complex catalyst, was purchased from Changzhou Hongyu Chemical Co., Ltd.;

[0054] Nano-titanium oxide, with a particle size of 5–10 nm, product number 1227164008, was purchased from Shanghai Puzhen Biotechnology Co., Ltd. (Kramer);

[0055] Nano zinc oxide, with a particle size of 5 to 10 nm, product number YM-ZnO, was purchased from Yumu (Ningbo) New Materials Co., Ltd.; each portion was 100 g.

[0056] Example 1: A coating process for optical lenses with high chemical stability based on vacuum coating:

[0057] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0058] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0059] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0060] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0061] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0062] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0063] The vacuum coating layers are, from the inside out, a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick zinc oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0064] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0065] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0066] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:8:0.4; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.25:0.15:0.015;

[0067] S32: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 h, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 0.5:5:15 into a reaction vessel in the dark, stirring and mixing at 55°C for 30 min, and obtaining 3-glycidyloxypropyltrimethoxysilane hydrolysis product. (3) adding nano-titanium oxide, nano-zinc oxide and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to the hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) heating the mixture in (1) to 90°C under nitrogen protection, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0068] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:1.5:0.04;

[0069] S33: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0070] S34: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0071] Among them, the relevant parameters of plasma technology are: air flow rate of 300mL / min, power of 100W, and treatment time of 20min;

[0072] S35: Applying high-performance modified slurry: evenly apply the high-performance modified slurry to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0073] Example 2: A coating process for optical lenses with high chemical stability based on vacuum coating:

[0074] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0075] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0076] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0077] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0078] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0079] The vacuum coating process is as follows: the coating chamber temperature is set at 35°C, and the vacuum is pumped to 1.0×1-3 Pa, anode voltage of 100 V, anode current of 1 A, oxygen flow rate of 30 sccm, and argon flow rate of 30 sccm;

[0080] The vacuum coating layers are, from the inside out, a 100nm thick silicon dioxide layer, a 25nm thick zirconium oxide layer, a 30nm thick silicon dioxide layer, a 25nm thick zirconium oxide layer, a 100nm thick silicon dioxide layer, a 30nm thick aluminum oxide layer, a 20nm thick zinc oxide layer, a 20nm thick titanium dioxide layer, and a 80nm thick silicon dioxide layer.

[0081] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0082] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0083] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:5:0.25; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.2:0.1:0.01;

[0084] S32: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 h, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 0.1:5:15 into a reaction vessel in the dark, stirring and mixing at 55°C for 30 min, and obtaining 3-glycidyloxypropyltrimethoxysilane hydrolysis product. (3) adding nano-titanium oxide, nano-zinc oxide and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to the hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) heating the mixture in (1) to 90°C under nitrogen protection, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0085] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:1:0.03;

[0086] S33: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0087] S34: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0088] Among them, the relevant parameters of plasma technology are: air flow rate of 300mL / min, power of 100W, and treatment time of 20min;

[0089] S35: Applying high-performance modified slurry: evenly apply the high-performance modified slurry to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0090] Example 3: A coating process for optical lenses with high chemical stability based on vacuum coating:

[0091] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0092] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0093] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0094] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 200 mL / min, power of 100 W, and treatment time of 20 minutes;

[0095] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0096] The vacuum coating process is as follows: the coating chamber temperature is set at 55°C, and the vacuum is pumped to 1.0×1 -4 Pa, anode voltage of 100 V, anode current of 2 A, oxygen flow rate of 10 sccm, and argon flow rate of 50 sccm;

[0097] The vacuum coating layers are, from the inside to the outside, a composite film of a 120nm thick silicon dioxide layer, a 40nm thick zirconium oxide layer, a 50nm thick silicon dioxide layer, a 40nm thick zirconium oxide layer, a 120nm thick silicon dioxide layer, a 50nm thick aluminum oxide layer, a 30nm thick zinc oxide layer, a 30nm thick titanium dioxide layer, and a 100nm thick silicon dioxide layer.

[0098] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0099] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0100] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:10:0.5; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.3:0.2:0.02;

[0101] S32: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 1:5:15 into a reaction vessel in the dark, stirring and mixing at 55°C for 30 minutes, and obtaining 3-glycidyloxypropyltrimethoxysilane hydrolyzate (3) adding nano-titanium oxide, nano-zinc oxide and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to the hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) heating the mixture in (1) to 90°C under nitrogen protection, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0102] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:2:0.05;

[0103] S33: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0104] S34: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0105] Among them, the relevant parameters of plasma technology are: air flow rate of 200mL / min, power of 100W, and treatment time of 20min;

[0106] S35: Applying high-performance modified slurry: evenly apply the high-performance modified slurry to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0107] The following comparative experiments are conducted based on Example 1, and comparative examples 1 to 4 are set as follows:

[0108] Comparative Example 1: Comparative Example 1 is based on Example 1, with the following adjustments: the resin lens and the coated resin lens are not activated, and other processes remain unchanged, specifically:

[0109] A coating process for optical lenses with high chemical stability based on vacuum coating:

[0110] Step 1: Cleaning and removing static electricity from the CR-39 resin lens to obtain a pre-treated resin lens;

[0111] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0112] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0113] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0114] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0115] The vacuum coating layers are, from the inside out, a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick zinc oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0116] Step 3: evenly apply the high-performance modified slurry to the surface of the coated resin lens and dry it to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0117] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0118] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:8:0.4; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.25:0.15:0.015;

[0119] S32: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 h, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 0.5:5:15 into a reaction vessel in the dark, stirring and mixing at 55°C for 30 min, and obtaining 3-glycidyloxypropyltrimethoxysilane hydrolysis product. (3) adding nano-titanium oxide, nano-zinc oxide and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to the hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) heating the mixture in (1) to 90°C under nitrogen protection, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0120] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:1.5:0.04;

[0121] S33: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0122] S34: Applying high-performance modified slurry: Apply the high-performance modified slurry evenly to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0123] Comparative Example 2: Comparative Example 2 is based on Example 1, with the following modifications: no zinc oxide layer is evaporated in the vacuum coating layer, and no nano zinc oxide is introduced into the polyethylene glycol-silane-nanoparticles. Other processes remain unchanged, specifically:

[0124] A coating process for optical lenses with high chemical stability based on vacuum coating:

[0125] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0126] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0127] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0128] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0129] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0130] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0131] The vacuum coating layers are, from the inside out, a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0132] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0133] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0134] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:8:0.4; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.25:0.15:0.015;

[0135] S32: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 h, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 0.5:5:15 into a reaction vessel under light protection, stirring and mixing at 55°C for 30 min, and obtaining 3-glycidyloxypropyltrimethoxysilane. Silane hydrolyzate; (3) adding nano-titanium oxide and sodium lauryl sulfate in a mass ratio of 1:0.05 to 3-glycidyloxypropyltrimethoxysilane hydrolyzate, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) under nitrogen protection, heating the mixture in (1) to 90 ° C, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0136] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:1.5:0.04;

[0137] S33: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0138] S34: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0139] Among them, the relevant parameters of plasma technology are: air flow rate of 300mL / min, power of 100W, and treatment time of 20min;

[0140] S35: Applying high-performance modified slurry: evenly apply the high-performance modified slurry to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0141] Comparative Example 3: Comparative Example 3 is based on Example 1, with the following modifications: the high-performance modified slurry is not coated on the surface of the coated resin lens, and other processes remain unchanged, specifically:

[0142] A coating process for optical lenses with high chemical stability based on vacuum coating:

[0143] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0144] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0145] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0146] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0147] Step 2: Using a vacuum coating process, a vacuum coating layer is evaporated on the front surface of the pre-treated resin lens to obtain an optical lens with high chemical stability;

[0148] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0149] The vacuum coating layers, from the inside to the outside, are a composite film of a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick zinc oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0150] Comparative Example 4: Comparative Example 4 is based on Example 1, with the following adjustments: polyethylene glycol-glycidol-hindered phenol ester is not added to the high-performance modified slurry, and other processes remain unchanged, specifically:

[0151] A coating process for optical lenses with high chemical stability based on vacuum coating:

[0152] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0153] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0154] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0155] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0156] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0157] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0158] The vacuum coating layers are, from the inside out, a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick zinc oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0159] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0160] S31: The preparation method of polyethylene glycol-silane-nanoparticles is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 h, and then removing methanol by distillation under reduced pressure for later use; (2) adding 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol in a mass ratio of 0.5:5:15 into a reaction vessel in the dark, stirring and mixing at 55°C for 30 min, and obtaining 3-glycidyloxypropyltrimethoxysilane hydrolyzed (3) adding nano-titanium oxide, nano-zinc oxide and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to the hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 2 hours, separating and purifying to obtain modified nanoparticles; (4) heating the mixture in (1) to 90°C under nitrogen protection, slowly adding the modified nanoparticles and DMC catalyst thereto, stirring and reacting for 9 hours, separating and purifying to obtain polyethylene glycol-modified nanoparticle branched products;

[0161] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, modified filler, and DMC catalyst is 1:1.5:0.04;

[0162] S32: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0163] S33: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0164] Among them, the relevant parameters of plasma technology are: air flow rate of 300mL / min, power of 100W, and treatment time of 20min;

[0165] S34: Applying high-performance modified slurry: Apply the high-performance modified slurry evenly to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0166] Comparative Example 5: Comparative Example 5 is based on the embodiment, with the following adjustments: polyethylene glycol-silane-nanoparticles are not added to the high-performance coating liquid, and other processes remain unchanged, specifically:

[0167] A coating process for optical lenses with high chemical stability based on vacuum coating:

[0168] Step 1: Cleaning, destaticizing, and activating the CR-39 resin lens to obtain a pre-treated resin lens;

[0169] S11: Cleaning treatment: (1) Place the resin lens in deionized water, ultrasonically clean it at 65°C for 3 minutes, and then spray clean it to complete the first cleaning; (2) Place the resin lens after the first cleaning in ST-A100 resin lens cleaning agent, ultrasonically clean it at 50°C for 3 times, each time for 2 minutes, to complete the second cleaning; (3) Place the resin lens after the second cleaning in deionized water, ultrasonically clean it at 50°C for 5 times, each time for 2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 75°C for 6 hours to complete the cleaning;

[0170] S12: Anti-static treatment: After cleaning, use HY-1301 high-efficiency electrostatic dust removal gun to remove static electricity from the surface of the resin lens in a dust-free environment at room temperature.

[0171] S13: Activation treatment: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation; wherein, the relevant parameters of the plasma technology are: air flow rate of 300 mL / min, power of 100 W, and treatment time of 20 minutes;

[0172] Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens;

[0173] The vacuum coating process is as follows: the coating chamber temperature is set at 45°C, and the vacuum is pumped to 1.0×1 -5 Pa, anode voltage of 115 V, anode current of 1.8 A, oxygen flow rate of 40 sccm, and argon flow rate of 10 sccm;

[0174] The vacuum coating layers are, from the inside out, a 110nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 45nm thick silicon dioxide layer, a 35nm thick zirconium oxide layer, a 110nm thick silicon dioxide layer, a 40nm thick aluminum oxide layer, a 25nm thick zinc oxide layer, a 25nm thick titanium dioxide layer, and a 90nm thick silicon dioxide layer.

[0175] Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability;

[0176] S31: The preparation method of polyethylene glycol-glycidol-hindered phenol ester is as follows: (1) adding 25 wt% potassium methoxide solution to polyethylene glycol 400, stirring and mixing for 1.5 hours, and then removing methanol by distillation under reduced pressure; (2) under nitrogen protection, heating the mixture in (1) to 90°C, and then slowly adding glycidol and DMC catalyst thereto, stirring and reacting for 9 hours, and obtaining polyethylene glycol-glycidol branched product through separation and purification; (3) adding polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, and then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine thereto, stirring and reacting for 24 hours, and obtaining polyethylene glycol-glycidol-hindered phenol ester through purification and separation;

[0177] The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; the mass ratio of polyethylene glycol 400, glycidol, and DMC catalyst is 1:8:0.4; the mass ratio of polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine is 1:0.25:0.15:0.015;

[0178] S32: preparing a high-performance modified slurry: adding 15 parts of polyethylene glycol 1000, 15 parts of polyethylene glycol-glycidol-hindered phenol ester, and 50 parts of deionized water into a container, stirring and mixing them uniformly to obtain a high-performance modified slurry;

[0179] S33: Activation treatment of coated resin lenses: (1) After removing static electricity, the coated resin lenses are treated using air plasma technology; (2) 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol are added into a reaction vessel at a mass ratio of 0.5:5:15, and acetic acid is added to adjust the pH of the solution to 5.5, and the mixture is stirred for 30 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) The coated resin lens after plasma treatment is placed in the 1,2-bis(trimethoxysilyl)ethane hydrolyzate, immersed at 45°C for 2 hours, taken out, and dried at 60°C for 6 hours to complete the activation;

[0180] Among them, the relevant parameters of plasma technology are: air flow rate of 300mL / min, power of 100W, and treatment time of 20min;

[0181] S34: Applying high-performance modified slurry: Apply the high-performance modified slurry evenly to the surface of the coated resin lens, dry it at 60°C for 6 hours, and form a 0.3μm thick high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability.

[0182] Performance test: The high chemical stability optical lenses prepared in Examples 1 to 3 and Comparative Examples 1 to 5 were subjected to relevant performance tests, as follows:

[0183] (1) Film adhesion: Use the cross method to cut the front and back surfaces of the optical lens to form 100 1×1 mm squares. Use 3M-610 pressure-sensitive adhesive to adhere to the squares. Tear off the pressure-sensitive adhesive tape along the 90° direction for 10 consecutive times. Count the number of squares that peel off. If the amount of squares peeled off is less than 15%, and no square is completely peeled off, it is considered qualified.

[0184] (2) Light transmittance test: According to the standard of GB / T 10810.3-2025, the light transmittance of optical lenses shall be tested;

[0185] (3) Corrosion resistance test: The optical lens was immersed in a 10 wt% sodium chloride aqueous solution for 240 hours, and its light transmittance was tested to evaluate its corrosion resistance.

[0186] (4) Anti-ultraviolet aging performance test: 0.8W / m 2 The optical lens is irradiated with ultraviolet light of high intensity, and after 480 hours, its light transmittance is tested to judge its anti-ultraviolet aging performance;

[0187] (5) Anti-fog performance test: Place the optical lens about 10 cm above a constant temperature water bath at 50°C. After 5 minutes, observe whether the lens is fogged.

[0188] The specific test results of the above test items are shown in Table 1 below:

[0189] Table 1

[0190]

[0191] Analysis of results: From the data of Comparative Example 1, it can be seen that the present invention activates the resin lens and the coated resin lens so that the film layers and the film layers and the substrate have excellent bonding strength; from the data of Comparative Example 2, it can be seen that the present invention adopts a combination of titanium dioxide and zinc oxide to improve the anti-ultraviolet aging performance of the optical lens, and both are indispensable; from Comparative Example 3, it can be seen that the high-performance modified slurry has a huge impact on the environmental weather resistance of the optical lens, so sacrificing part of the light transmittance and coating the high-performance modified slurry has a great effect on the optical lens; from Comparative Example 4 to Comparative Examples 5 to 6, it can be seen that polyethylene glycol-glycidol-hindered phenol ester and polyethylene glycol-silane-nanoparticles have a great influence on the performance of the high-performance modified slurry, and only when the two work together can they play a greater role and achieve comprehensive modification of the optical lens.

[0192] In summary, the present invention comprehensively prepares a highly chemically stable optical lens with excellent optical properties, environmental weather resistance, and anti-fog properties.

[0193] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A vacuum coating process for producing optical lenses with high chemical stability, characterized by: The following steps are involved: Step 1: cleaning, removing static electricity, and activating the resin lens substrate to obtain a pre-treated resin lens; Step 2: using a vacuum coating process to evaporate a vacuum coating layer on the front surface of the pretreated resin lens to obtain a coated resin lens; Step 3: After the coated resin lens is activated, the high-performance modified slurry is evenly coated on the surface of the coated resin lens and dried to form a high-performance film layer on both surfaces of the coated resin lens to obtain an optical lens with high chemical stability; The vacuum coating layer is a multi-layer film, which is composed of a silicon dioxide layer with a thickness of 100 to 120 nm, a zirconium oxide layer with a thickness of 25 to 40 nm, a silicon dioxide layer with a thickness of 30 to 50 nm, a zirconium oxide layer with a thickness of 25 to 40 nm, a silicon dioxide layer with a thickness of 100 to 120 nm, an aluminum oxide layer with a thickness of 30 to 50 nm, a zinc oxide layer with a thickness of 20 to 30 nm, a titanium dioxide layer with a thickness of 20 to 30 nm, and a silicon dioxide layer with a thickness of 80 to 100 nm. The high-performance modified slurry comprises the following raw material components: by weight, 10 to 15 parts of polyethylene glycol 1000, 10 to 20 parts of polyethylene glycol-glycidol-hindered phenol ester, 10 to 20 parts of polyethylene glycol-silane-nanoparticles, and 50 parts of deionized water; The thickness of the high-performance film layer is 0.2-0.4 μm.

2. The vacuum coating process for producing optical lenses with high chemical stability according to claim 1, characterized in that: The specific process of the cleaning process is: (1) Place the resin lens in deionized water, ultrasonically clean it at 60-70°C for 2-4 minutes, and then spray clean it to complete the cleaning process; (2) placing the resin lens after the primary cleaning into ST-A100 resin lens cleaning agent and ultrasonically cleaning it at 40-60°C for 2-3 times, each time for 1-2 minutes, to complete the secondary cleaning; (3) Place the resin lens after the secondary cleaning in deionized water and ultrasonically clean it at 40-60°C for 3-5 times, each time for 1-2 minutes. After cleaning, place it in a vacuum drying oven and dry it at 70-80°C for 3-9 hours to complete the cleaning; The static electricity removal method is as follows: after cleaning, the surface of the resin lens is subjected to static electricity removal using a HY-1301 high-efficiency static dust removal gun in a room temperature and dust-free environment; The specific method of the activation treatment is: (1) After removing static electricity, the resin lens is treated using air plasma technology; (2) adding 1,2-bis(trimethoxysilyl)ethane, deionized water, and anhydrous ethanol into a reaction vessel at a mass ratio of (0.1-1):5:15, adding acetic acid to adjust the pH of the solution to 5-6, and stirring for 20-40 minutes to obtain a 1,2-bis(trimethoxysilyl)ethane hydrolyzate; (3) placing the resin lens after plasma treatment in 1,2-bis(trimethoxysilyl)ethane hydrolyzate at 40-50°C for 1-3 hours, taking it out, and drying it at 50-70°C for 3-9 hours to complete activation; Among them, the relevant parameters of plasma technology are: air flow rate of 200-400 mL / min, power of 50-150 W, and treatment time of 10-30 min.

3. The vacuum coating process for producing optical lenses with high chemical stability according to claim 1, characterized in that: The vacuum coating process is as follows: the coating chamber temperature is set at 30-55°C, and the vacuum is pumped to 1.0×10 -5 ~1.0×1 -3 Pa, anode voltage is 100-120 V, anode current is 1-2 A, oxygen flow rate is 10-50 sccm, and argon flow rate is 0-50 sccm.

4. The vacuum coating process for producing optical lenses with high chemical stability according to claim 1, wherein: The preparation method of the polyethylene glycol-glycidol-hindered phenol ester compound is: (1) Add 25 wt% potassium methoxide solution to polyethylene glycol 400, stir and mix for 1 to 2 hours, and then remove methanol by distillation under reduced pressure; (2) Under nitrogen protection, the mixture in (1) is heated to 80-100° C., and glycidol and DMC catalyst are slowly added thereto, and the mixture is stirred for reaction for 6-12 hours. After separation and purification, a polyethylene glycol-glycidol branched product is obtained; (3) Adding the polyethylene glycol-glycidol branched product to dimethylformamide, stirring and mixing uniformly, then adding 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine, stirring and reacting for 12 to 36 hours, and purifying and separating to obtain polyethylene glycol-glycidol-hindered phenol ester.

5. The vacuum coating process for producing optical lenses with high chemical stability according to claim 4, characterized in that: The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; The mass ratio of polyethylene glycol 400, glycidol and DMC catalyst is 1:(5-10):(0.25-0.5); The mass ratio of the polyethylene glycol-glycidol branched product, 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, 1,3-dicyclohexylcarbodiimide and 4-dimethylaminopyridine is 1:(0.2-0.3):(0.1-0.2):(0.01-0.02).

6. The vacuum coating-based coating process for optical lenses with high chemical stability according to claim 1, characterized in that: The preparation method of the polyethylene glycol-silane-nanoparticles is: (1) Add 25 wt% potassium methoxide solution to polyethylene glycol 400, stir and mix for 1 to 2 hours, and then remove methanol by distillation under reduced pressure for later use; (2) In the dark, 3-glycidyloxypropyltrimethoxysilane, deionized water, and anhydrous ethanol were added to a reaction vessel in a mass ratio of (0.1-1):5:15, and stirred at 50-60° C. for 20-40 minutes to obtain a 3-glycidyloxypropyltrimethoxysilane hydrolyzate; (3) adding nano-titanium oxide, nano-zinc oxide, and sodium lauryl sulfate in a mass ratio of 1:1:0.05 to a hydrolyzed solution of 3-glycidyloxypropyltrimethoxysilane, ball milling and mixing for 1 to 3 hours, and separating and purifying to obtain modified nanoparticles; (4) Under nitrogen protection, the mixture in (1) is heated to 80-100° C., and then the modified nanoparticles and DMC catalyst are slowly added thereto, and the mixture is stirred for reaction for 6-12 hours. After separation and purification, polyethylene glycol-modified nanoparticle branched products are obtained.

7. The vacuum coating process for producing optical lenses with high chemical stability according to claim 6, characterized in that: The ratio of polyethylene glycol 400 to potassium methoxide solution is 1.4 g:1 mL; The average particle size of the nano titanium oxide and nano zinc oxide is 5 to 10 nm; The mass ratio of the polyethylene glycol 400, the modified filler and the DMC catalyst is 1:(1-2):(0.03-0.05).

8. An optical lens with high chemical stability prepared by the coating process of an optical lens with high chemical stability based on vacuum coating according to any one of claims 1 to 7.

9. The optical lens with high chemical stability according to claim 8, characterized in that: It comprises a high-performance film layer arranged on the rear surface of a resin lens substrate, a vacuum coating layer arranged on the front surface of the resin lens, and a high-performance film layer arranged on the surface of the vacuum coating layer.

Images