CN114644886B

CN114644886B - Dual-component lens hardening liquid with adjustable refractive index as well as preparation method and application method thereof

Info

Publication number: CN114644886B
Application number: CN202011499235.1A
Authority: CN
Inventors: 黄虹文
Original assignee: Fujian Sanming Runxiang New Materials Co ltd
Current assignee: Fujian Sanming Runxiang New Materials Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2023-07-14
Anticipated expiration: 2040-12-18
Also published as: CN114644886A

Abstract

The invention provides a bi-component lens hardening liquid with adjustable refractive index, a preparation method and a use method thereof. The lens hardening liquid comprises a component A and a component B. The raw materials of the component A comprise the following components in parts by weight: 10-50 parts of a first solvent, 5-30 parts of alkoxy silane, 5-30 parts of nano silicon dioxide colloid solution, 3-10 parts of adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive. The raw materials of the component B comprise: 10-50 parts of a second solvent, 5-30 parts of alkoxy silane, 5-30 parts of a nano oxide colloid solution, 3-10 parts of an adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive. The obtained component A has lower refractive index, the component B has higher refractive index, the component A and the component B are easy to blend, and the hardening liquid with different refractive indexes can be obtained by adjusting the mixing proportion, so that the hardening liquid can be suitable for various base materials and has good adhesive force to different base materials.

Description

Dual-component lens hardening liquid with adjustable refractive index as well as preparation method and application method thereof

Technical Field

The invention relates to the technical field of lenses, in particular to a bi-component refractive index adjustable lens hardening liquid and a preparation method and a use method thereof.

Background

With the development of the material industry, the materials of sunglasses on the market are more and more abundant. According to the material, the glass material, the crystal material, the plastic material and the like are included. The plastic material is not easy to break, has good impact resistance and gradually replaces other materials to become the mainstream. The plastic materials of the sunglasses mainly comprise resin (CR 39), PC, TAC, nylon, polyester (Tritan), AC (acrylic) and the like. The spectacle manufacturers choose different plastic materials to produce lenses according to the requirements and cost.

However, plastic materials are prone to scratches, abrasion marks, etc. due to poor surface strength, and the lens substrate needs to be immersed in a hardening liquid for curing during the manufacturing process, so that a hardening coating is formed on the surface of the lens to increase the surface hardness of the lens. The cured coating of the stiffening liquid must have a similar refractive index to the lens substrate, otherwise light is easily refracted and scattered between the lens substrate and the stiffening coating interface, thereby reducing the light transmittance of the lens, affecting the apparent effect of the lens, reducing the resolution of the lens imaging, or causing optical inaccuracy.

The refractive indexes of the manufactured sunglasses lenses are different by using different plastic materials, and the refractive indexes of different lens base materials are greatly different, for example, the refractive index of an AC (acrylic) base material and a TAC base material is 1.49, the refractive index of a nylon base material is 1.516, the refractive index of a CR39 base material is 1.502, the refractive index of a PC base material is 1.586, and the refractive index of a Tritan base material is 1.545. Therefore, at present, the lens base materials with different refractive indexes need to be hardened by adopting hardening liquids with different types, the component differences of different hardening yards are large, the hardening liquids cannot be used universally, the varieties of the hardening liquids are various, frequent replacement is needed, and the production efficiency and the product quality are affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The invention aims to provide a bi-component lens hardening liquid with adjustable refractive index, a preparation method and a use method thereof, so as to solve the problem that different lens base materials need to be treated by hardening liquids of different types.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

in a first aspect, the present invention provides a two-component refractive index adjustable lens hardening liquid comprising a component a and a component B, wherein,

the raw materials of the component A comprise the following components in parts by weight: 10-50 parts of a first solvent, 5-30 parts of alkoxy silane, 5-30 parts of nano silicon dioxide colloid solution, 3-10 parts of adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive;

the raw materials of the component B comprise the following components in parts by weight: 10-50 parts of a second solvent, 5-30 parts of alkoxy silane, 5-30 parts of a nano oxide colloid solution, 3-10 parts of an adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive.

In some embodiments, the first solvent and the second solvent are both one or both of an alcohol and an ether solvent.

In some embodiments, the adhesion promoting resin is prepared according to the following steps: and (3) dissolving a silane coupling agent, (methyl) acrylic ester monomer and an initiator in a third solvent for polymerization reaction, heating to 60-100 ℃, and reacting for 3-10 h to obtain the adhesion promoting resin.

In some embodiments, the additives include a curing agent and a processing aid.

In some embodiments, the catalyst is selected from one or more of formic acid, acetic acid, terephthalic acid, phthalic acid, isophthalic acid, and benzenesulfonic acid; the curing agent is selected from one or more of sodium naphthenate, potassium naphthenate, zinc isooctanoate, guanidine acetate, sodium acetate, potassium acetate, ammonium acetate, ethanolamine, triethanolamine, tetramethylammonium hydroxide, trimethylammonium chloride, tetramethylammonium chloride, triethylammonium bromide, dibutyltin dilaurate, dibutyltin acetate, stannous octoate, butyl titanate, aluminum isopropoxide and aluminum triacetylacetonate; the processing aid is selected from one or more of a surfactant, a leveling agent and an antifoaming agent.

In some embodiments, the mass concentration of the nano silica colloid in the nano silica colloid solution is 20-30%, and the particle size of the nano silica is 5-30 nm; the mass concentration of the nano oxide in the nano oxide colloid solution in the colloid solution is 20-30%, and the particle size of the nano oxide is 5-30 nm.

In some embodiments, the nano-oxide in the nano-oxide colloidal solution is one or more selected from titanium dioxide, aluminum oxide, zirconium oxide, molybdenum oxide and selenium oxide, and the solvent of the nano-oxide colloidal solution is water, alcohol or alcohol-water mixture.

In a second aspect, the present invention provides a method for preparing a lens hardening liquid as described above, comprising the steps of:

dissolving the alkoxy silane and the adhesion promoting resin in part of the first solvent, adding the catalyst and the nano silicon dioxide colloid solution, performing hydrolytic polycondensation reaction to obtain a first reactant, cooling the first reactant, adding the rest of the first solvent and the additive while cooling, and mixing to obtain the component A; and

dissolving the alkoxy silane and the adhesion promoting resin in part of the second solvent, adding the catalyst and the nano oxide colloid solution, performing hydrolytic polycondensation reaction to obtain a second reactant, cooling the second reactant, adding the rest of the second solvent and the additive while cooling, and mixing to obtain the component B.

In some embodiments, the hydrolytic polycondensation reaction process of the first reactant and the second reactant are both: heating to a first temperature, and preserving heat for 20-50 min; then heating to a second temperature, and preserving heat for 1-3 h.

In some embodiments, the first temperature is 60 to 70 ℃; the second temperature is 75-85 ℃.

The third aspect of the invention provides a method for using the lens hardening liquid, which comprises the steps of mixing the component A and the component B according to a certain proportion to obtain a mixed liquid, coating the mixed liquid on a lens substrate, baking for 3-8 min at 60-70 ℃, and curing for 1-3 h at 80-130 ℃.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the components of the component A and the component B are specially designed, and different nano oxide colloid solutions and other substances are respectively added into the component A and the component B, so that the refractive index of the obtained component A is low (the refractive index of the component A is 1.4-1.5), and the refractive index of the component B is high (the refractive index of the component B is 1.55-1.65). And the component A and the component B are relatively close in composition and are easy to blend, and hardening liquid with different refractive indexes (such as hardening liquid with refractive indexes of 1.49, 150, 1.52 and the like) can be obtained by adjusting the mixing proportion of the component A and the component B, so that the bi-component hardening liquid can be suitable for various different lens base materials, unified standardized production of the hardening liquid can be realized, and the hardening liquid is not required to be replaced frequently in the lens production process, thereby greatly improving the production efficiency and saving the production cost.

In addition, the adhesive force promoting resin and the alkoxy silane are added into the raw materials of the component A and the component B to carry out cohydrolysis polycondensation reaction, so that the adhesive force of the hardening liquid to different lens base materials is greatly improved, and the surface hardness and the wear resistance of the hardening coating are improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 schematically illustrates a flow chart of a method of preparing a two-component refractive index tunable lens hardening liquid in an exemplary embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.

The following describes the lens hardening liquid with adjustable bi-component refractive index and the preparation method thereof.

The lens hardening liquid with adjustable bi-component refractive index provided by the embodiment of the invention comprises the component A and the component B, and the component A and the component B are mixed according to a certain proportion to obtain the lens hardening liquid. Different mixing ratios of component a and component B can result in lens substrates suitable for different refractive indices.

Wherein, the raw materials of the component A comprise the following components in parts by weight: 10-50 parts of a first solvent, 5-30 parts of alkoxy silane, 5-30 parts of nano silicon dioxide colloid solution, 3-10 parts of adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive.

Further, in an embodiment, the raw materials of the component a include, in parts by weight: 20-30 parts of a first solvent, 15-25 parts of alkoxy silane, 6-8 parts of nano silicon dioxide colloid solution, 3-6 parts of adhesion promoting resin, 1-3 parts of a catalyst, 0.3-1.5 parts of a curing agent and 0.01-0.1 part of a processing aid. The raw materials of the component B comprise the following components in parts by weight: 20-30 parts of a second solvent, 10-15 parts of alkoxy silane, 9-14 parts of nano silicon dioxide colloid solution, 3-6 parts of adhesion promoting resin, 1-3 parts of a catalyst, 0.3-1.5 parts of a curing agent and 0.01-0.1 part of a processing aid. The component A and the component B have better adhesive force to the lens base material and more excellent wear resistance through adjusting the content of each raw material of the component A and the component B.

Further, in the above raw materials for preparing the component a and the component B, the first solvent and the second solvent are one or both of alcohol and ether solvents. The alcohol solvent is at least one selected from methanol, ethanol, propanol, butanol, isopropanol, ethylene glycol, glycerol, isobutanol, butanediol, isopentyl glycol and pentaerythritol, and the ether solvent is one selected from ethylene glycol diethyl ether, propylene glycol methyl ether and ethylene glycol butyl ether. It is understood that the first solvent and the second solvent may be the same or different. In one embodiment, the first solvent and the second solvent are the same, and the blending effect of the component A and the component B is better.

Further, in the above raw materials for preparing the component a and the component B, the alkoxysilane is selected from one or more of methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, tetramethoxysilane, tetraethoxysilane, γ -methacryloxypropyl trimethoxysilane, and γ -glycidoxypropyl trimethoxysilane. The alkoxysilanes used in component A and component B may be the same or different. In one embodiment, the feed of component a contains at least two alkoxysilane components and the feed of component B contains one alkoxysilane component.

Further, in the above raw materials for preparing the component a and the component B, the adhesion promoting resin is prepared according to the following steps: and (3) dissolving a silane coupling agent, (methyl) acrylic ester monomer and an initiator in a third solvent for polymerization reaction, heating to 60-100 ℃, and reacting for 3-10 h to obtain the adhesion promoting resin.

Wherein the (methyl) acrylic ester monomer is a compound with a general formula of (CH 3) CH=CHCOOR, wherein R is one or more of alkyl, amino, hydroxyl, epoxy and tetrahydrofurfuryl with 1-18C atoms. Further, in one embodiment, the (meth) acrylic acid ester monomer is methyl methacrylate and tetrahydrofurfuryl methacrylate with a mass ratio of 1:1.5-2.5. The two monomers and the silane coupling agent are selected for initiation polymerization, and the organic functional alkoxy can promote polymerization and crosslinking of the polymer, so that the adhesive force is obviously improved, and the mechanical property and the adhesive property of the resin are promoted. Meanwhile, the adhesion promoting resin has better heat resistance, and yellowing phenomenon of the hard coating is avoided.

Wherein, in some embodiments, the third solvent is selected from one or more of ethylene glycol butyl ether, propylene glycol methyl ether, ethylene glycol ethyl ether, isopropyl alcohol, and n-butanol. Silane coupling agents include, but are not limited to, kh570, kh550, kh560, kh540, and the like. Initiators include, but are not limited to, azobisisobutyronitrile, azobisisoheptonitrile, cumene hydroperoxide, and the like.

Further, in the above-described raw materials for preparing component a and component B, the catalyst includes, but is not limited to, one or more of formic acid, acetic acid, terephthalic acid, phthalic acid, isophthalic acid, and benzenesulfonic acid.

Further, in the above raw materials for preparing the component a and the component B, the additives include a curing agent and a processing aid. Wherein the curing agent includes, but is not limited to, one or more of sodium naphthenate, potassium naphthenate, zinc isooctanoate, guanidine acetate, sodium acetate, potassium acetate, ammonium acetate, ethanolamine, triethanolamine, tetramethylammonium hydroxide, trimethylammonium chloride, tetramethylammonium chloride, triethylammonium bromide, dibutyltin dilaurate, dibutyltin acetate, stannous octoate, butyl titanate, aluminum isopropoxide, and aluminum triacetylacetonate. Processing aids include, but are not limited to, one or more of surfactants, leveling agents, and defoamers. In one embodiment, the processing aid is an organosilicon-based aid, such as BYK-333, BYK-346, BYK-348, and the like.

Further, in the raw material for preparing the component A, the mass concentration of the nano silicon dioxide colloid in the nano silicon dioxide colloid solution is 20-30%, and the particle size of the nano silicon dioxide is 5-30 nm. The solvent of the nano silicon dioxide colloid solution is water, alcohol or alcohol-water mixture.

Further, in the raw material for preparing the component B, the mass concentration of the nano oxide in the nano oxide colloid solution in the colloid solution is 20-30%, and the particle size of the nano oxide is 5-30 nm. The nano oxide is one or more selected from titanium dioxide, aluminum oxide, zirconium oxide, molybdenum oxide and selenium oxide. The solvent of the nano oxide colloid solution is water, alcohol or alcohol-water mixture.

In the hydrolysis polycondensation reaction, the nano silicon dioxide colloid solution and the nano oxide colloid solution can bond with adhesion promoting resin molecules under the action of alkoxy silane, so that the structural strength and the bonding capability of the hardening coating are improved, and the refractive index of the hardening liquid is regulated through the nano silicon dioxide and the nano oxide.

The invention further provides a preparation method of the lens hardening liquid. Wherein the method comprises the steps of

The preparation steps of the component A are as follows: dissolving the alkoxy silane and the adhesion promoting resin in part of the first solvent, adding the catalyst and the nano silicon dioxide colloid solution, performing hydrolytic polycondensation reaction to obtain a first reactant, cooling the first reactant, adding the rest of the first solvent and the additive while cooling, and mixing to obtain the component A. Further, after adding the remaining first solvent and the additive to mix, a filtration step is also performed. During filtration, a precise filter with the diameter of 1-5 mu m is adopted for filtration, and large particles can be removed after filtration treatment, so that cracking and falling of a hardening layer are avoided.

The preparation steps of the component B are as follows: dissolving the alkoxy silane and the adhesion promoting resin in part of the second solvent, adding the catalyst and the nano oxide colloid solution, performing hydrolytic polycondensation reaction to obtain a second reactant, cooling the second reactant, adding the rest of the second solvent and the additive while cooling, and mixing to obtain the component B. Further, after adding the remaining second solvent and the additive to mix, a filtration step is also performed. During filtration, a precise filter with the diameter of 1-5 mu m is adopted for filtration, and large particles can be removed after filtration treatment, so that cracking and falling of a hardening layer are avoided.

Further, in order to better promote the reaction, the first solvent and the second solvent are respectively alcohol solvents and ether solvents with the mass ratio of 3-5:1. The alkoxy silane and the adhesion promoting resin are dissolved in an alcohol solvent, and an ether solvent is added in the cooling process.

Further, in some embodiments, the hydrolytic polycondensation reaction process of the first reactant and the second reactant are both: heating to a first temperature, and preserving heat for 20-50 min; then heating to a second temperature, and preserving heat for 1-3 h.

Further, in some embodiments, the first temperature is 60 to 70 ℃; the second temperature is 75-85 ℃.

The embodiment of the invention also provides a use method of the lens hardening liquid with the adjustable bi-component refractive index, which comprises the following steps: mixing the component A and the component B according to a certain proportion to obtain a mixed solution, coating the mixed solution on a lens substrate, baking for 3-8 min at 60-70 ℃, and curing for 1-3 h at 80-130 ℃. The hardening layer formed by the hardening liquid can improve the adhesion effect of the hardening layer formed by the hardening liquid on the lens base material. Further, dip coating is adopted in the coating mode. Different curing temperatures and times are set for different lens substrates to ensure the coating effect of the hard coat.

Unless otherwise defined, terms used herein are all meanings commonly understood by those skilled in the art.

The features and capabilities of the present invention are described in further detail below in connection with the examples.

Examples

The experimental methods used in the following examples are conventional methods unless otherwise specified.

Unless otherwise indicated, the contents in the examples are parts by weight.

Example 1

The present example provides an adhesion promoting resin prepared according to the following steps:

100 parts of propylene glycol methyl ether is added into a 500ml three-neck flask, the temperature is raised to 80 ℃, and a solution consisting of 10 parts of gamma-methacryloxypropyl trimethoxy silane, 30 parts of methyl methacrylate, 60 parts of tetrahydrofurfuryl methacrylate and 0.5 part of azodiisobutyronitrile is slowly added dropwise for reaction for 6 hours, so that the adhesion promoting resin is obtained.

Example 2

The embodiment provides a bi-component lens hardening liquid with adjustable refractive index, which is prepared according to the following steps:

preparation of component A: 150 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 50 parts of phenyl trimethoxy silane, 30 parts of adhesion promoting resin (prepared in example 1) and 200 parts of ethanol are added into a 500ml three-neck flask, 70 parts of silica sol containing 30% of solid and 10 parts of acetic acid are added under stirring, the temperature is raised to 65 ℃ for 30min, the temperature is raised to 80 ℃ for 2h, 50 parts of ethylene glycol butyl ether is added while the temperature is lowered, stirring is carried out for 1h, 5 parts of aluminum acetylacetonate and 0.2 part of BYK-333 are added, stirring is carried out for 4h, and a 1 mu m precision filter is used for filtering, thus obtaining the solar lens hardening liquid component A.

Preparation of component B: 150 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 30 parts of adhesion promoting resin (prepared in example 1) and 200 parts of ethanol are added into a 500ml three-neck flask, 100 parts of titanium dioxide sol containing 30% of solid and 10 parts of acetic acid are added under stirring, the temperature is raised to 65 ℃ for 30min, the temperature is raised to 80 ℃ for 2h, 50 parts of ethylene glycol butyl ether is added while the temperature is lowered, stirring is carried out for 1h, 5 parts of aluminum acetylacetonate and 0.2 part of BYK-333 are added, stirring is carried out for 4h, and a 1 mu m precise filter is used for filtering, thus obtaining the solar lens hardening liquid component B.

The lens hardening liquid prepared in the embodiment is mixed according to the mass ratio of the component A to the component B of 1:1, and is used for the lens base material made of Tritan material, and the cutting edge is completely smooth and does not drop off after the adhesion (a cross-cut method) test.

Example 3

preparation of component A: 200 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 30 parts of adhesion promoting resin (prepared in example 1) and 200 parts of ethanol are added into a 500ml three-neck flask, 70 parts of silica sol containing 30% of solid content and 10 parts of acetic acid are added under stirring, the temperature is raised to 65 ℃ for 30min, the temperature is raised to 80 ℃ for 2h, 50 parts of ethylene glycol butyl ether is added while the temperature is lowered, stirring is carried out for 1h, 5 parts of aluminum acetylacetonate and 0.2 part of BYK-333 are added, stirring is carried out for 4h, and a 1 mu m precise filter is used for filtering, thus obtaining A.

Preparation of component B: the same as in example 2.

The lens hardening liquid prepared in the embodiment is mixed according to the mass ratio of the component A to the component B of 1:1, and the lens base material used for the Tritan material is slightly peeled off from the cutting edge by an adhesive force (a cross-cut method) test, and the affected area is less than 1%.

Example 4

preparation of component A: 100 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 30 parts of adhesion promoting resin (prepared in example 1) and 200 parts of ethanol are added into a 500ml three-neck flask, 50 parts of silica sol containing 30% of solid content and 10 parts of acetic acid are added under stirring, the temperature is raised to 65 ℃ for 30min, the temperature is raised to 80 ℃ for 2h, 50 parts of ethylene glycol butyl ether is added while the temperature is lowered, stirring is carried out for 1h, 5 parts of aluminum acetylacetonate and 0.2 part of BYK-333 are added, stirring is carried out for 4h, and a 1 mu m precise filter is used for filtering, thus obtaining the solar lens hardening liquid component A.

Preparation of component B: 100 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 30 parts of adhesion promoting resin (prepared in example 1) and 200 parts of ethanol are added into a 500ml three-neck flask, 70 parts of titanium dioxide sol containing 30% of solid and 10 parts of acetic acid are added under stirring, the temperature is raised to 65 ℃ for 30min, the temperature is raised to 80 ℃ for 2h, 50 parts of ethylene glycol butyl ether is added while the temperature is lowered, stirring is carried out for 1h, 5 parts of aluminum acetylacetonate and 0.2 part of BYK-333 are added, stirring is carried out for 4h, and a 1 mu m precise filter is used for filtering, thus obtaining the solar lens hardening liquid component B.

The lens hardening liquid prepared in the embodiment is mixed according to the mass ratio of the component A to the component B of 1:1, and the lens base material used for the Tritan material is subjected to adhesion (cross-cut method) test, so that the cutting edge is slightly fallen off, and the affected area is less than 2%.

Application example

The experimental methods used in the following application examples are conventional methods unless otherwise specified.

Unless otherwise indicated, both component A and component B used in the application examples are the products obtained in example 2.

Application example 1

Preparation of TAC hardening liquid: mixing 90g of component A and 10g of component B, stirring uniformly, coating the hardening liquid on the TAC lens in a dip-coating mode, baking for 5min in a 60 ℃ oven, and transferring to a 85 ℃ oven for curing for 2h to obtain the wear-resistant hardening transparent TAC lens. The refractive index of the lens treated by the hardening liquid is not changed, and the lens is observed on the surface under a lamp tube with the color temperature of 4000K, so that no obvious five colors are seen.

Application example 2

Preparation of Tritan hardening liquid: and (3) mixing 50g of the component A and 50g of the component B, uniformly stirring, coating the hardening liquid on the Tritan lens in a dip-coating mode, baking for 5min in a 60 ℃ oven, and transferring to a 95 ℃ oven for curing for 3h to obtain the wear-resistant hardening transparent Tritan lens. The refractive index of the lens treated by the hardening liquid is not changed, and the lens is observed on the surface under a lamp tube with the color temperature of 4000K, so that no obvious five colors are seen.

Application example 3

And (3) mixing 10g of the component A and the component B, uniformly stirring, coating the hardening liquid on the PC lens in a dip-coating mode, baking for 5min in a 60 ℃ oven, and transferring to a 120 ℃ oven for curing for 2h to obtain the wear-resistant hardening transparent PC lens. The refractive index of the lens treated by the hardening liquid is not changed, and the lens is observed on the surface under a lamp tube with the color temperature of 4000K, so that no obvious five colors are seen.

Therefore, the lens hardening liquid provided by the embodiment can be suitable for various base materials, has strong adhesive force and has wide application prospect.

The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Claims

1. A dual-component lens hardening liquid with adjustable refractive index is characterized by comprising a component A and a component B, wherein,

the component A is prepared from the following raw materials in parts by weight: 10-50 parts of a first solvent, 5-30 parts of alkoxy silane, 5-30 parts of a nano silicon dioxide colloid solution, 3-10 parts of an adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive, wherein the refractive index of the component A is 1.4-1.5;

the component B is prepared from the following raw materials in parts by weight: 10-50 parts of a second solvent, 5-30 parts of alkoxy silane, 5-30 parts of a nano oxide colloid solution, 3-10 parts of an adhesion promoting resin, 0.5-5 parts of a catalyst and 0.1-5 parts of an additive, wherein the refractive index of the component B is 1.55-1.65;

wherein, the nano oxide in the nano oxide colloid solution is selected from one or more of titanium dioxide, aluminum oxide, zirconium oxide, molybdenum oxide and selenium oxide; the alkoxy silane is selected from one or two of gamma- (2, 3-glycidoxy) propyl trimethoxy silane and phenyl trimethoxy silane;

the adhesion promoting resin is prepared according to the following steps: dissolving a silane coupling agent, (methyl) acrylic ester monomer and an initiator in a third solvent for polymerization reaction, heating to 60-100 ℃ and reacting for 3-10 hours to obtain the adhesion promoting resin, wherein the (methyl) acrylic ester monomer is methyl methacrylate and tetrahydrofurfuryl methacrylate with a mass ratio of 1:1.5-2.5;

wherein the silane coupling agent is KH570 silane coupling agent.

2. The dual component refractive index adjustable lens hardening liquid according to claim 1, wherein the first solvent and the second solvent are one or both of an alcohol and an ether solvent.

3. The two-component refractive index tunable lens hardening liquid according to claim 1, wherein the additive comprises a curing agent and a processing aid;

the processing aid is selected from one or more of a surfactant, a leveling agent and an antifoaming agent.

4. The two-component refractive index tunable lens hardening liquid according to claim 1, wherein the catalyst is selected from one or more of formic acid, acetic acid, terephthalic acid, phthalic acid, isophthalic acid, and benzenesulfonic acid.

5. The dual-component refractive index adjustable lens hardening liquid according to claim 1, wherein the mass concentration of nano silicon dioxide in the nano silicon dioxide colloid solution is 20-30%, and the particle size of the nano silicon dioxide is 5-30 nm; the mass concentration of the nano oxide in the nano oxide colloid solution in the colloid solution is 20-30%, and the particle size of the nano oxide is 5-30 nm.

6. The two-component refractive index adjustable lens hardening liquid according to claim 1, wherein the solvent of the nano-oxide colloid solution is water, alcohol or alcohol-water mixture.

7. A method of preparing a lens hardening liquid according to any one of claims 1 to 6, comprising the steps of:

dissolving the alkoxy silane and the adhesion promoting resin in the component A in part of the first solvent, adding the catalyst and the nano silicon dioxide colloid solution, performing hydrolytic polycondensation reaction to obtain a first reactant, cooling the first reactant, adding the rest of the first solvent and the additive while cooling, and mixing to obtain the component A; and

dissolving the alkoxy silane and the adhesion promoting resin in the component B in part of the second solvent, adding the catalyst and the nano oxide colloid solution, performing hydrolytic polycondensation reaction to obtain a second reactant, cooling the second reactant, adding the rest of the second solvent and the additive while cooling, and mixing to obtain the component B.

8. The method for preparing a lens hardening liquid according to claim 7, wherein the hydrolysis polycondensation reaction process of the first reactant and the second reactant is: heating to a first temperature, and preserving heat for 20-50 min; then heating to a second temperature, and preserving heat for 1-3 h.

9. The method for preparing a lens hardening liquid according to claim 8, wherein the first temperature is 60 to 70 ℃; the second temperature is 75-85 ℃.

10. A method of using the lens hardening liquid according to any one of claims 1 to 6, wherein the component a and the component B are mixed in a certain ratio to obtain a mixed liquid, the mixed liquid is coated on a lens substrate, baked at 60 to 70 ℃ for 3 to 8 minutes, and then cured at 80 to 130 ℃ for 1 to 3 hours.