Resin material for yellowing-resistant high-Abbe-number lens and preparation method of resin material

Abstract

The invention relates to the technical field of lens resin materials, in particular to a resin material for an anti-yellowing high-Abbe-number lens and a preparation method of the resin material. The invention relates to a resin material for an anti-yellowing high Abbe number lens, which is prepared from the following substances in parts by weight: 40 to 60 parts of 2, 3-bis [(2-mercaptoethyl) sulfenyl]-1-propanethiol, 45 to 65 parts of isocyanate and 0.03 to 0.05 part of catalyst, the isocyanate is prepared from any one of hexamethylene dicyanic acid ester, hydrogenated m-xylylene dimethyl diisocyanate, isophorone diisocyanate, 4, 4 '-dicyclohexylmethane diisocyanate and m-xylylene dimethyl diisocyanate. Compared with a traditional resin lens, the resin lens produced by polymerizing 2, 3-bis [(2-mercaptoethyl) sulfenyl]-1-propanethiol serving as a raw material and isocyanate has the advantages that the refractive index is effectively increased, and the resin lens has the characteristics of good yellowing resistance and high Abbe number.

Description

Technical Field

[0001] The present invention relates to the technical field of lens resin materials, and in particular to a yellowing-resistant high Abbe number lens resin material and a preparation method thereof. Background Art

[0002] With the continuous development of optical technology, optical lenses play an increasingly important role in various applications. Especially in the fields of medical treatment, photography, optical instruments, etc., the performance requirements for lenses are becoming increasingly stringent. Among them, yellowing resistance and high Abbe number are important performance indicators of lens materials. Yellowing resistance refers to the ability of a material to maintain its optical transparency and color stability under long-term light and temperature changes; while the Abbe number is an important parameter for measuring the dispersion performance of optical materials. The higher the Abbe number, the smaller the dispersion and the better the imaging quality. Therefore, the development of resin lens materials with yellowing resistance and high Abbe number characteristics has become an important direction of current optical material research.

[0003] In recent years, with the development of new resin materials, the optical and mechanical properties of materials can be significantly improved by introducing nanofillers such as nano-titanium dioxide and nano-silicate into the resin. These nanofillers can not only enhance the weather resistance and UV resistance of the resin, but also effectively regulate the refractive index of the resin, thereby increasing the Abbe number and improving the imaging quality.

[0004] With respect to the above-mentioned related technologies, the inventors have found that while the existing lens resin materials improve the Abbe number characteristics, after the addition of inorganic nanoparticles, the inorganic nanoparticles are easily agglomerated and have poor compatibility with polymers, which will lead to a significant decrease in the light transmittance of the optical resin. Moreover, most of these materials can only be prepared into thin films and are difficult to prepare in blocks, so they are difficult to be widely used. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a yellowing-resistant high Abbe number lens resin material and a preparation method thereof.

[0006] A yellowing-resistant high Abbe number lens resin material adopts the following technical solution: A resin material for yellowing-resistant high Abbe number lenses, comprising the following materials in parts by weight: 40-60 parts of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol; Isocyanate 45-65 parts; Catalyst 0.03-0.05 parts; The isocyanate includes any one of hexamethylene dicyanate, hydrogenated meta-xylylene diisocyanate, isophorone diisocyanate, 4,4′-dicyclohexylmethane diisocyanate and meta-xylylene diisocyanate.

[0007] Through the above technical scheme, the present application selects 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol as the raw material, introduces a group with a high molar refractive index and a low molar volume into the polymer material through molecular design, and then produces a resin lens with good light transmittance and chemical stability through polymerization with isocyanate. The addition of isocyanate enhances the adhesion and mechanical strength of the resin, ensuring the durability of the final product, so that the prepared resin material for the lens effectively improves the refractive index compared to traditional resin lenses, and has good yellowing resistance and high Abbe number characteristics.

[0008] Furthermore, the isocyanate is preferably meta-xylylene diisocyanate.

[0009] Through the above technical scheme, the present application optimizes isocyanates, because yellowing is caused by oxidation reactions on the polymer main chain, including the breakage of carbamate groups and the oxidation of central methylene groups, and the generation of quinones as the product of the color-forming reaction. Irradiation changes the physical and chemical properties of the polyurethane surface, resulting in rapid discoloration and degradation. The absorption of ultraviolet light leads to the degradation of polyurethane materials and the photooxidation of -CH2- groups, and these reactions are combined with the yellowing of the surface of the polyurethane material. Based on this, the present application selects an aromatic structure-containing aliphatic isocyanate-m-xylylene diisocyanate, which has the dual advantages of aromatic and aliphatic isocyanates, as a monomer to prepare a resin material for yellowing-resistant high Abbe number lenses, which helps to improve the optical quality of lenses, reduce optical distortion, and improve the performance of resin lenses.

[0010] Furthermore, the catalyst is a mixture of dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine.

[0011] Through the above technical solution, the present application optimizes the components of the catalyst, accelerates the reaction rate, promotes efficient polymerization, and ensures that the material achieves the desired physical and chemical properties in a relatively short time. At the same time, this mixed catalyst can provide good selectivity in the catalytic process, reduce the occurrence of side reactions, and reduce the impurity content of the material, thereby improving the purity and optical transparency of the resin. In addition, the application of this catalyst also helps to reduce energy consumption in the production process and improve production efficiency.

[0012] Furthermore, the mixing ratio of the dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine is 4.5-6.5:1 by mass ratio.

[0013] Furthermore, the yellowing-resistant high Abbe number lens resin material also includes an ionic liquid modified material.

[0014] Furthermore, the ionic liquid modified material contains fluorine.

[0015] Furthermore, the ionic liquid modified material is prepared by the following scheme: Place N-methylimidazole, n-butyl bromide and sodium tetrafluoroborate in a reaction device, heat and keep warm for reaction; After the reaction is completed, dichloromethane is added to precipitate NaBr, and the dichloromethane in the filtrate is filtered and distilled to remove the dichloromethane, and then the ionic liquid modified material is prepared by drying.

[0016] Through the above technical solution, the present application can effectively synthesize high-performance ionic liquids through the reaction of N-methylimidazole and n-butyl bromide. The introduction of fluorine atoms in the fluorine-containing imidazole salt ionic liquid can change the interaction between polymer chains and their arrangement. The high electronegativity and low refractive index characteristics of the fluorine element make the material more optically transparent. In addition, the introduction of the dithiomethyl structure also increases the flexibility of the polymer chain and enhances the optical uniformity of the material, so that the prepared lens resin material has a good high Abbe number characteristic.

[0017] In a second aspect, the present application provides a method for preparing a resin material for yellowing-resistant high Abbe number lenses, using the following technical solution: A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: The ionic liquid modified material is mixed with 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, and prepolymerized under ultraviolet light. The prepolymerization reaction liquid, isocyanate and catalyst are mixed and placed in a reaction device, stirred and mixed, and degassed. The mixed liquid is placed in an oven and polymerized by programmed temperature increase to prepare the resin material for yellowing-resistant high Abbe number lenses.

[0018] Through the above technical solution, the present application realizes prepolymerization treatment by ultraviolet light irradiation, thereby enhancing the crosslinking density of the material and improving the overall performance of the resin. The design of this step takes advantage of the ultraviolet curing technology, making the reaction rapid and efficient, reducing energy consumption and time in the production process. By mixing the prepolymerization reaction liquid with isocyanate and a catalyst, the crosslinking reaction can be further promoted, so that the final material has a significant improvement in strength and transparency.

[0019] Further, the programmed temperature rise comprises the following steps: After keeping at room temperature for 1 hour, increase the temperature to 45°C at 20°C / h. After keeping for 1 hour, continue to increase the temperature to 65°C at 20°C / h. After continuing to keep for 6 hours, increase the temperature to 80°C at 15°C / 2h. After keeping for 1 hour, increase the temperature to 100°C at 20°C / h. After keeping for 1 hour, increase the temperature to 120°C at 20°C / 2h and keep for 2 hours.

[0020] Through the programmed temperature increase step in the above technical solution, precise control is provided for the thermal curing of the material, ensuring that the physical and chemical changes of the resin at different temperatures can be reasonably guided. By gradually increasing the temperature, the generation of bubbles and internal stress of the material caused by a sudden temperature increase can be effectively avoided, which is crucial to improving the optical quality and mechanical properties of the product. In addition, the heat preservation link in the heating process allows the reaction to be sufficient, ensuring the uniform mixing of the components, thereby improving the overall performance of the final product. This efficient heating strategy provides great convenience for the industrial production of resin materials, making the production process more controllable and stable.

[0021] In summary, this application has the following beneficial effects: First, the present application uses 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol as a raw material, introduces a group with a high molar refractive index and a low molar volume into the polymer material through molecular design, and then produces a resin lens with good light transmittance and chemical stability through polymerization with isocyanate. The addition of isocyanate enhances the adhesion and mechanical strength of the resin, ensuring the durability of the final product, so that the prepared resin material for the lens effectively improves the refractive index compared to traditional resin lenses, and has good yellowing resistance and high Abbe number characteristics.

[0022] Second, the present application optimizes isocyanates, because yellowing is caused by oxidation reactions on the polymer backbone, including the breakage of carbamate groups and the oxidation of central methylene groups, and the generation of quinones as the product of the color-forming reaction. Irradiation changes the physical and chemical properties of the polyurethane surface, resulting in rapid discoloration and degradation. The absorption of ultraviolet light leads to the degradation of polyurethane materials and the photooxidation of -CH2- groups, and these reactions are combined with the yellowing of the polyurethane surface. Based on this, the present application selects an aromatic structure-containing aliphatic isocyanate, m-xylylene diisocyanate, which has the dual advantages of aromatic and aliphatic isocyanates, as a monomer to prepare a resin material for yellowing-resistant high Abbe number lenses, which helps to improve the optical quality of lenses, reduce optical distortion, and improve the performance of resin lenses.

[0023] Third, the present application can effectively synthesize high-performance ionic liquids through the reaction of N-methylimidazole and n-butyl bromide. The introduction of fluorine atoms in the fluorine-containing imidazole salt ionic liquid can change the interaction between polymer chains and their arrangement. The high electronegativity and low refractive index characteristics of the fluorine element make the material more optically transparent. In addition, the introduction of the dimercaptomethyl structure also increases the flexibility of the polymer chain and enhances the optical uniformity of the material, so that the prepared lens resin material has a good high Abbe number characteristic. DETAILED DESCRIPTION

[0024] The present application is further described in detail below with reference to the embodiments.

[0025] Preparation Example 1 Catalyst preparation: Dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine were stirred evenly in a mass ratio of 4.5:1, and catalyst 1 was collected.

[0026] Preparation Example 2 Catalyst preparation: Dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine were stirred evenly in a mass ratio of 5.5:1, and catalyst 2 was collected.

[0027] Preparation Example 3 Catalyst preparation: Dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine were stirred evenly in a mass ratio of 6.5:1, and catalyst 3 was collected.

[0028] Preparation Example 4 Fluorine-containing imidazolium salt ionic liquid 1: Take equimolar masses of N-methylimidazole, n-butyl bromide and sodium tetrafluoroborate and place them in a reaction device, heat to 80°C and keep the temperature for 3 hours; After the reaction is completed, 100 mL of dichloromethane is added to precipitate NaBr, and the dichloromethane in the filtrate is filtered and distilled off, and then dried at 100° C. for 6 h to prepare the ionic liquid modified material 1.

[0029] Preparation Example 5 Fluorinated imidazolium salt ionic liquid 2: Take equimolar masses of N-methylimidazole, n-butyl bromide and sodium tetrafluoroborate and place them in a reaction device, heat to 82°C and keep the temperature for 3.5 hours; After the reaction is completed, 150 mL of dichloromethane is added to precipitate NaBr, and the dichloromethane in the filtrate is filtered and distilled to remove the dichloromethane, and the filtrate is dried at 110° C. for 6 h to prepare the ionic liquid modified material 2.

[0030] Preparation Example 6 Fluorinated imidazolium salt ionic liquid 3: Take equal molar masses of N-methylimidazole, n-butyl bromide and sodium tetrafluoroborate and place them in a reaction device, heat to 85°C and keep the temperature for 4 hours; After the reaction is completed, 200 mL of dichloromethane is added to precipitate NaBr, and the dichloromethane in the filtrate is filtered and distilled to remove the dichloromethane, and the filtrate is dried at 120° C. for 6 h to prepare the ionic liquid modified material 3.

[0031] Example 1 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 40 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 45 kg of meta-xylylene diisocyanate, and 0.03 kg of catalyst 1.

[0032] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, isocyanate and catalyst, mix and place in a reaction kettle, stir and mix, and degas with an oil pump. Take the mixed solution and place in an oven. After keeping at room temperature for 1 hour, heat it to 45°C at 20°C / h. After keeping it for 1 hour, continue to heat it to 65°C at 20°C / h. After keeping it for 6 hours, heat it to 80°C at 15°C / 2h. After keeping it for 1 hour, heat it to 100°C at 20°C / h. After keeping it for 1 hour, heat it to 120°C at 20°C / 2h. Keep it for 2 hours, then stand and cool to room temperature, and the resin material for yellowing-resistant high Abbe number lenses can be prepared.

[0033] Example 2 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 50 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 55 kg of meta-xylylene diisocyanate, and 0.04 kg of catalyst 2.

[0034] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, isocyanate and catalyst, mix and place in a reaction kettle, stir and mix, and degas with an oil pump. Take the mixed solution and place in an oven. After keeping at room temperature for 1 hour, heat it to 45°C at 20°C / h. After keeping it for 1 hour, continue to heat it to 65°C at 20°C / h. After keeping it for 6 hours, heat it to 80°C at 15°C / 2h. After keeping it for 1 hour, heat it to 100°C at 20°C / h. After keeping it for 1 hour, heat it to 120°C at 20°C / 2h. Keep it for 2 hours, then stand and cool to room temperature, and the resin material for yellowing-resistant high Abbe number lenses can be prepared.

[0035] Example 3 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 60 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 65 kg of meta-xylylene diisocyanate, and 0.05 kg of catalyst 3.

[0036] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, isocyanate and catalyst, mix and place in a reaction kettle, stir and mix, and degas with an oil pump. Take the mixed solution and place in an oven. After keeping at room temperature for 1 hour, heat it to 45°C at 20°C / h. After keeping it for 1 hour, continue to heat it to 65°C at 20°C / h. After keeping it for 6 hours, heat it to 80°C at 15°C / 2h. After keeping it for 1 hour, heat it to 100°C at 20°C / h. After keeping it for 1 hour, heat it to 120°C at 20°C / 2h. Keep it for 2 hours, then stand and cool to room temperature, and the resin material for yellowing-resistant high Abbe number lenses can be prepared.

[0037] Example 4 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 50 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 55 kg of m-xylylene diisocyanate, 0.04 kg of catalyst 2 and 0.5-0.8 kg of fluorine-containing imidazolium salt ionic liquid 1.

[0038] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take the ionic liquid modified material 1 and mix it with 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, and prepolymerize it under ultraviolet light for 25 minutes. The prepolymerization reaction liquid is mixed with isocyanate and catalyst and placed in a reactor, stirred and mixed, and degassed with an oil pump. The mixed liquid is taken and placed in an oven. After keeping it at room temperature for 1 hour, it is heated to 45°C at 20°C / h. After keeping it at room temperature for 1 hour, it is continuously heated to 65°C at 20°C / h. After keeping it at room temperature for 6 hours, it is heated to 80°C at 15°C / 2h. After keeping it at room temperature for 1 hour, it is heated to 100°C at 20°C / h. After keeping it at room temperature for 1 hour, it is heated to 120°C at 20°C / 2h. It is kept at room temperature for 2 hours, and then it is cooled to room temperature. The resin material for yellowing-resistant high Abbe number lenses can be prepared.

[0039] Example 5 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 50 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 55 kg of meta-xylylenediisocyanate, 0.04 kg of catalyst 2 and 0.6 kg of fluorine-containing imidazolium salt ionic liquid 2.

[0040] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take the ionic liquid modified material 2 and mix it with 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, and prepolymerize it under ultraviolet light for 27 minutes. The prepolymerization reaction liquid is mixed with isocyanate and catalyst and placed in a reactor, stirred and mixed, and degassed with an oil pump. The mixed liquid is taken and placed in an oven. After keeping it at room temperature for 1 hour, the temperature is increased to 45°C at 20°C / h. After keeping it at room temperature for 1 hour, the temperature is continuously increased to 65°C at 20°C / h. After keeping it at room temperature for 6 hours, the temperature is increased to 80°C at 15°C / 2h. After keeping it at room temperature for 1 hour, the temperature is increased to 100°C at 20°C / h. After keeping it at room temperature for 1 hour, the temperature is increased to 120°C at 20°C / 2h. Keep it at room temperature for 2 hours, and then stand and cool to room temperature to prepare the resin material for yellowing-resistant high Abbe number lenses.

[0041] Example 6 A resin material for yellowing-resistant high Abbe number lenses comprises the following substances: 50 kg of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, 55 kg of meta-xylylene diisocyanate, 0.04 kg of catalyst 2 and 0.8 kg of fluorine-containing imidazolium salt ionic liquid 3.

[0042] A method for preparing a yellowing-resistant high Abbe number lens resin material comprises the following preparation steps: Take the ionic liquid modified material 3 and mix it with 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, and prepolymerize it under ultraviolet light for 30 minutes. The prepolymerization reaction liquid is mixed with isocyanate and catalyst and placed in a reactor, stirred and mixed, and degassed with an oil pump. The mixed liquid is taken and placed in an oven. After keeping it at room temperature for 1 hour, the temperature is increased to 45°C at 20°C / h. After keeping it at this temperature for 1 hour, the temperature is continuously increased to 65°C at 20°C / h. After keeping it at this temperature for 6 hours, the temperature is increased to 80°C at 15°C / 2h. After keeping it at this temperature for 1 hour, the temperature is increased to 100°C at 20°C / h. After keeping it at this temperature for 1 hour, the temperature is increased to 120°C at 20°C / 2h. Keep it at this temperature for 2 hours, and then stand and cool to room temperature to prepare the resin material for yellowing-resistant high Abbe number lenses.

[0043] Performance Testing Abbe number: The transparent resin material is polished into a cuboid material. A DM-R4 Abbe refractometer from Japan's ATAGO company is used. Potassium iodide coupling liquid is added to fill the gap between the polishing material and the measuring platform. The refractive index at wavelengths of 589 nm, 486 nm, and 656 nm is measured respectively. The Abbe number Vd is calculated using the corresponding formula 1.

[0044] V d =n d -1 / n F -n C Formula 1 Among them, n dis the refractive index at a wavelength of 589 nm, n F is the refractive index at a wavelength of 486 nm, n C is the refractive index at a wavelength of 656nm.

[0045] Yellowing resistance: Determined by the plastic yellowness index (Yi) test method in GB / T2409-1980. Yi refers to a measure of the yellowness calculated based on the reflectivity of the sample to red, green and blue light under a standard light source with a magnesium oxide standard white board as the reference.

[0046] The details are shown in Table 1 below: Table 1 Performance test table project Abbe number Light 40 yellow degrees Example 1 44.5 27.51 Example 2 45.2 26.34 Example 3 45.1 26.84 Example 4 48.8 23.15 Example 5 49.1 22.48 Example 6 48.9 22.69 From the results of the above examples 1-6 and Table 1, it can be found that: This application uses 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol as a raw material, introduces a group with a high molar refractive index and a low molar volume into the polymer material through molecular design, and then produces a resin lens with good light transmittance and chemical stability through polymerization with isocyanate. The addition of isocyanate enhances the adhesion and mechanical strength of the resin, ensuring the durability of the final product, so that the prepared resin material for the lens effectively improves the refractive index compared to traditional resin lenses, and has good yellowing resistance and high Abbe number characteristics.

[0047] From the comparison between Examples 1-3 and Examples 4-6, the present application can effectively synthesize high-performance ionic liquids through the reaction of N-methylimidazole and n-butyl bromide. The introduction of fluorine atoms in the fluorine-containing imidazole salt ionic liquid can change the interaction between polymer chains and their arrangement. The high electronegativity and low refractive index characteristics of the fluorine element make the material more optically transparent. In addition, the introduction of the dithiomethyl structure also increases the flexibility of the polymer chain and enhances the optical uniformity of the material, so that the prepared lens resin material has a good high Abbe number characteristic.

[0048] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

[0049] All publications, patent applications, patents and other references mentioned in this specification are incorporated herein by reference. Unless otherwise defined, all technical and scientific terms used in this specification have the meanings conventionally understood by those skilled in the art. In the event of a conflict, the definition in this specification shall prevail.

[0050] When this specification uses the prefix "well-known to those skilled in the art", "prior art" or similar terms to introduce materials, substances, methods, steps, devices or components, etc., the objects introduced by the prefix cover those commonly used in the art when this application is filed, but also include those that are not commonly used at present but will become recognized in the art as being suitable for similar purposes.

[0051] In the context of the present specification, any matters or items not mentioned are directly applicable to those known in the art without any changes except those explicitly stated.

Claims

1. A yellowing-resistant high Abbe number lens resin material, characterized in that: The composition includes the following materials in parts by weight: 40-60 parts of 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol; Isocyanate 45-65 parts; Catalyst 0.03-0.05 parts; The isocyanate includes any one of hexamethylene dicyanate, hydrogenated meta-xylylene diisocyanate, isophorone diisocyanate, 4,4′-dicyclohexylmethane diisocyanate and meta-xylylene diisocyanate.

2. The yellowing-resistant high Abbe number lens resin material according to claim 1, characterized in that: The isocyanate is preferably meta-xylylene diisocyanate.

3. The resin material for yellowing-resistant high Abbe number lenses according to claim 1, characterized in that: The catalyst is a mixture of dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine.

4. The yellowing-resistant high Abbe number lens resin material according to claim 3, characterized in that: The mixing ratio of the dibutyltin dichloride and N,N,N,N-tetramethyl-1,4-butanediamine is 4.5-6.5:1 by mass ratio.

5. The yellowing-resistant high Abbe number lens resin material according to claim 1, characterized in that: The resin material for yellowing-resistant high Abbe number lenses also includes an ionic liquid modified material.

6. The yellowing-resistant high Abbe number lens resin material according to claim 5, characterized in that: The ionic liquid modified material is a fluorine-containing imidazolium salt ionic liquid.

7. The yellowing-resistant high Abbe number lens resin material according to claim 5, characterized in that: The ionic liquid modified material is prepared by the following scheme: Place N-methylimidazole, n-butyl bromide and sodium tetrafluoroborate in a reaction device, heat and keep the temperature to react; After the reaction is completed, dichloromethane is added to precipitate NaBr, and the dichloromethane in the filtrate is filtered and distilled to remove the dichloromethane, and then the ionic liquid modified material is prepared by drying.

8. The method for preparing a resin material for yellowing-resistant high Abbe number lenses according to any one of claims 1 to 7, characterized in that: The method comprises the following preparation steps: The ionic liquid modified material is mixed with 2,3-bis[(2-mercaptoethyl)thio]-1-propanethiol, and prepolymerized under ultraviolet light. The prepolymerization reaction liquid, isocyanate and catalyst are mixed and placed in a reaction device, stirred and mixed, and degassed. The mixed liquid is placed in an oven and polymerized by programmed temperature increase to prepare the resin material for yellowing-resistant high Abbe number lenses.

9. The method for preparing a yellowing-resistant high Abbe number lens resin material according to claim 8, characterized in that: The temperature program The following steps are involved: After keeping at room temperature for 1 hour, increase the temperature to 45°C at 20°C / h. After keeping for 1 hour, continue to increase the temperature to 65°C at 20°C / h. After continuing to keep for 6 hours, increase the temperature to 80°C at 15°C / 2h. After keeping for 1 hour, increase the temperature to 100°C at 20°C / h. After keeping for 1 hour, increase the temperature to 120°C at 20°C / 2h and keep for 2 hours.