CN115232421A - 1.67 high-refractive-index resin lens monomer based on sulfur-containing polyurethane modification and preparation method thereof - Google Patents
1.67 high-refractive-index resin lens monomer based on sulfur-containing polyurethane modification and preparation method thereof Download PDFInfo
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- CN115232421A CN115232421A CN202210756487.0A CN202210756487A CN115232421A CN 115232421 A CN115232421 A CN 115232421A CN 202210756487 A CN202210756487 A CN 202210756487A CN 115232421 A CN115232421 A CN 115232421A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Abstract
The invention provides a sulfur-containing polyurethane modified 1.67 high-refractive-index resin lens monomer and a preparation method thereof, wherein the lens monomer comprises the following components in parts by weight: 800-1500 parts of matrix mixture, 5-15 parts of sulfur-containing polyurethane, 1-1.4 parts of UV powder, 1-3 parts of pigment powder, 0.1-0.3 part of initiator and 0.5-0.7 part of mold release agent; the preparation method comprises the following steps: weighing raw materials, filling a mold, carrying out primary curing, releasing, trimming, cleaning a substrate, carrying out secondary curing, inspecting the substrate, hardening inspection, hardening curing, coating and inspecting a finished product. The resin lens monomer prepared by the preparation method has a high refractive index of 1.67, so that the lens is thinner, and the prepared resin lens monomer has a higher finished product qualification rate through the synergistic effect of the steps.
Description
Technical Field
The invention relates to the field of preparation of resin lens monomers, in particular to a modified resin lens monomer with a refractive index of 1.67 and a preparation method thereof.
Background
Along with the popularization of electronic products, myopia patients are more and more, the proportion of high-degree population in the myopia population is also increasing day by day, the main materials in the optical field are optical glass and 230 types, along with the improvement of the research level, particularly the rapid development of high polymer materials, inorganic optical glass lenses are gradually replaced by high polymer resin lenses with excellent optical performance and lighter quality, the traditional optical resin materials comprise PMMA, PS, PC, CR-39 and the like, the optical resin lenses are made of organic materials, the thickness of the resin lenses is in inverse proportion to the refractive index of the resin, therefore, the resin lenses made of the resin with low refractive index under the condition of the same degree are thicker, in order to improve the wearing experience of the high-myopia population, the resin lenses with high refractive index are required to be researched and developed, meanwhile, the preparation method of the resin lens monomers is required to be optimized, and the yield of the resin lens monomers is increased.
Disclosure of Invention
In order to solve the defects in the prior art, a 1.67 high-refractive-index resin lens monomer based on sulfur-containing polyurethane modification is provided.
The specific scheme is as follows:
a sulfur-containing polyurethane modified 1.67 high-refractive-index resin lens monomer comprises the following components in parts by weight:
800-1500 parts of matrix mixture, 5-15 parts of sulfur-containing polyurethane, 1-1.4 parts of UV powder, 1-3 parts of pigment powder, 0.1-0.3 part of initiator and 0.5-0.7 part of mold release agent;
the substrate mixture comprises epoxy acrylic resin, dibenzyl maleate, dibenzyl phosphite and styrene, wherein the epoxy acrylic resin is a main polymerization monomer in the substrate mixture, double bonds of the epoxy acrylic resin are opened under the action of an initiator to be polymerized to obtain a finally cured resin lens, and the epoxy acrylic resin has the advantages of good adhesive force, chemical resistance, strength and the like as the main resin; dibenzyl maleate serves to plasticize; the addition of triphenyl phosphite can effectively enhance the light stability of the lens and keep the transparency of the lens, and the addition of styrene can enable the olefin monomer of the styrene to play a role in crosslinking in polymerization, so that a net-shaped three-dimensional structure is formed.
The preparation method of the sulfur-containing polyurethane comprises the following steps: will be 4,4 ， Adding the dimercapto diphenyl sulfide into a reaction kettle, heating to 100-150 ℃, stirring for 30min, cooling to 50-80 ℃, adding the p-phenylene diisocyanate, and polymerizing to obtain the sulfur-containing polyurethane, wherein sulfur atoms have higher molar refraction and lower molecular dispersion, and have better effect on preparing resin lenses with high refractive index.
The pigment powder comprises blue pigment powder and red pigment powder, and the mass part ratio of the blue pigment powder to the red pigment powder is (2.5-10): 1.
the reaction kettle comprises a stirring device, a reflux condensation pipe, a temperature detection device and a nitrogen protection device.
A preparation method of a sulfur-containing polyurethane modified 1.67 high-refractive-index resin lens monomer comprises the following steps:
(1) Weighing raw materials, vacuumizing and stirring at (5-10 ℃) minus or plus 2 ℃ for 45-60min;
(2) Connecting a filter to fill a mold;
(3) Putting the mould into a curing oven for primary curing: heating is carried out through a curing curve and a control program, and the specific process parameters are as follows: gradually heating to 33 ℃ at 25 ℃, curing for 0.05h, and keeping the temperature at 33 ℃ for 5h; then gradually heating to 45 ℃ and curing for 2h; continuously heating to 55 ℃, and curing for 2h; gradually heating to 70 ℃, and curing for 4h; continuously heating to 125 ℃, curing for 4h, and keeping the temperature at 125 ℃ for 3h; gradually cooling to 75 ℃, solidification 2h, the early stage is the solidification process from liquid to solid, the later stage is the process of eliminating solid internal stress, the internal stress will lead to the lens inside atress uneven, leads to the lens to take place certain deformation or produce the phenomenon of straight flange when the device, makes the solidification effect reach the optimum under the specification of 1.67 refracting index resin lens through carrying out the adaptability adjustment to the solidification parameter.
(4) Carrying out releasing, trimming and substrate cleaning operations on the substrate molded in the mold: conveying the once-cured semi-finished product to a release table for release operation, separating the lens from the mold, respectively taking out the lens and the mold for trimming and cleaning, and trimming the lens by using a trimmer; carrying out ultrasonic cleaning on the lens by using a cleaning solution;
(5) Putting the substrate into a curing furnace for secondary curing: carrying out secondary curing to further eliminate internal stress, wherein the specific process parameters are as follows: gradually heating to 120 ℃ at 30 ℃, curing for 2h, and keeping the temperature at 120 ℃ for 3h; gradually cooling to 30 deg.C, and curing for 0.1h;
(6) And (3) inspecting the substrate: the parameters of the substrate inspection include: light transmittance, substrate hardness, yellow index, turbidity, impact resistance, center thickness and the like;
(7) Hardening the lens: placing the qualified lens into a lens frame and soaking the lens frame in hardening liquid, lifting the lens frame at a certain speed to coat a layer of uniform hardening liquid with a certain thickness on the surface of the lens, then placing the lens into a pre-curing channel for pre-curing, and hardening the resin lens, so that the wear resistance of the resin lens can be improved;
(8) And (3) carrying out inspection after hardening: inspecting the pre-cured lenses one by one;
(9) Hardening and curing treatment: conveying the qualified lens to a curing oven for curing treatment, and drying the cured lens, wherein the lens needs to be thoroughly dried, the firmness of a lens film layer is influenced by the presence of moisture, and the drying is favorable for eliminating internal stress;
(10) Putting the hardened and cured resin lens into a coating machine to carry out vacuum coating on the lens;
(11) And (4) carrying out quality inspection and classification on the finished lenses, and packaging the lenses meeting the standard according to the types into a warehouse.
Has the advantages that:
(1) The invention provides a sulfur-containing polyurethane modified 1.67 high-refractive-index resin lens monomer, which uses epoxy acrylic resin as a main polymerization monomer, wherein the epoxy acrylic resin has the advantages of good adhesive force, chemical resistance and strength, and can effectively enhance the light stability of the lens and keep the transparency of the lens by adding dibenzyl maleate, and the olefin monomer in styrene plays a role in crosslinking in polymerization to enable the polymer to form a net-shaped three-dimensional structure.
(2) The invention provides a preparation method of sulfur-containing resin, namely, the sulfur-containing polyurethane is obtained by the reaction of 4, 4-dimercapto diphenyl sulfide and p-phenylene diisocyanate, the operation is simple, and the resin lens monomer obtains high refractive index through the synergistic effect of all components.
(3) The preparation method provided by the invention has two times of curing operations, and the specific process parameters of the first curing are as follows: gradually heating to 33 ℃ at 25 ℃, curing for 0.05h, and keeping the temperature at 33 ℃ for 5h; then gradually heating to 45 ℃ and curing for 2h; continuously heating to 55 ℃, and curing for 2h; gradually heating to 70 ℃, and curing for 4h; continuously heating to 125 ℃, curing for 4h, and keeping the temperature at 125 ℃ for 3h; gradually cooling to 75 ℃, and curing for 2h, wherein the early stage is a solidification process from liquid to solid, and the later stage is a process for eliminating internal stress of the solid. The specific technological parameters of the second curing are as follows: gradually heating to 120 ℃ at 30 ℃, curing for 2h, and keeping the temperature at 120 ℃ for 3h; and gradually cooling to 30 ℃, curing for 0.1h, further eliminating internal stress, and optimizing the two curing processes to ensure that the resin lens obtains the optimal curing effect.
(4) Through the synergistic effect among the steps, the final resin lens monomer obtains better finished product qualification rate, and the production efficiency is improved.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
Example 1:
s1, preparing sulfur-containing polyurethane: 4,4 subjected to water removal treatment ， Adding dimercapto diphenyl sulfide into a reaction kettle, heating the mixture to 110 ℃ in an oil bathThen stirring for 30min; cooling to 70 ℃ after the materials are dissolved, adding p-phenylene diisocyanate, and finally reacting to obtain sulfur-containing polyurethane;
s2: accurately weighing the following components in parts by weight:
1000 parts of a matrix mixture; 6 parts of sulfur-containing polyurethane; 1 part of UV powder; 1.5 parts of blue pigment powder; 0.2 part of red pigment powder; 0.1 part of initiator HILCAT DB; 680.6 parts of mold release agent HILUB;
the matrix mixture comprises epoxy acrylic resin, dibenzyl maleate, dibenzyl phosphite and styrene;
after weighing, vacuumizing and stirring for 50min at 15 ℃;
s3: connecting a filter to fill a mold;
s4: putting the mould into a curing oven for primary curing: heating is carried out through a curing curve and a control program, and the specific technological parameters are as follows: gradually heating to 33 ℃ at 25 ℃, curing for 0.05h, and keeping the temperature at 33 ℃ for 5h; then gradually heating to 45 ℃ and curing for 2h; continuously heating to 55 ℃, and curing for 2h; gradually heating to 70 ℃, and curing for 4h; continuously heating to 125 ℃, curing for 4h, and keeping the temperature at 125 ℃ for 3h; gradually cooling to 75 ℃, and curing for 2h;
s5: carrying out releasing, trimming and substrate cleaning operations on the substrate molded in the mold: conveying the semi-finished product subjected to primary curing to a release table for release operation, separating the lens from the mold, respectively taking out the lens and the mold for trimming and cleaning, and trimming the lens by using a trimmer; carrying out ultrasonic cleaning on the lens by using a cleaning solution;
s6: putting the substrate into a curing furnace for secondary curing: carrying out secondary curing to further eliminate internal stress, wherein the specific process parameters are as follows: gradually heating to 120 ℃ at 30 ℃, curing for 2h, and keeping the temperature at 120 ℃ for 3h; gradually cooling to 30 deg.C, and curing for 0.1h;
s7: and (3) inspecting the substrate: the parameters of the substrate inspection include: light transmittance, substrate hardness, yellow index, turbidity, impact resistance, center thickness and the like;
s8: hardening the lens: placing the qualified lens into a lens frame and soaking the lens frame in hardening liquid, lifting the lens frame at a certain speed to coat a layer of uniform hardening liquid with a certain thickness on the surface of the lens, then placing the lens into a pre-curing channel for pre-curing, and hardening the resin lens, so that the wear resistance of the resin lens can be improved;
s9: hardening and curing treatment: conveying the qualified lens to a curing oven for curing treatment, and drying the cured lens, wherein the lens needs to be thoroughly dried, the firmness of a lens film layer is influenced by the presence of moisture, and the drying is favorable for eliminating internal stress;
s10: putting the hardened and cured resin lens into a coating machine to carry out vacuum coating on the lens;
s11: and (4) carrying out quality inspection and classification on the finished lenses, and packaging the lenses meeting the standard according to the types into a warehouse.
Example 2:
s1, preparing sulfur-containing polyurethane: adding the 4, 4-dimercaptodiphenyl sulfide subjected to dehydration treatment into a reaction kettle, heating to 110 ℃ in an oil bath, and stirring for 30min; after the materials are dissolved, cooling to 70 ℃, adding p-phenylene diisocyanate, and finally reacting to obtain sulfur-containing polyurethane;
s2: accurately weighing the following components in parts by weight:
1000 parts of a matrix mixture; 15 parts of sulfur-containing polyurethane; 1.4 parts of UV powder; 2.0 parts of blue pigment powder; 0.4 part of red pigment powder; 0.3 part of an initiator; 0.6 part of a release agent;
the matrix mixture comprises epoxy acrylic resin, dibenzyl maleate, dibenzyl phosphite and styrene;
after weighing, vacuumizing and stirring for 50min at 15 ℃;
the rest of the procedure was the same as in example 1
Example 3:
s1, preparing sulfur-containing polyurethane: adding the 4, 4-dimercaptodiphenyl sulfide subjected to water removal treatment into a reaction kettle, heating to 110 ℃ in an oil bath, and stirring for 30min; cooling to 70 ℃ after the materials are dissolved, adding p-phenylene diisocyanate, and finally reacting to obtain sulfur-containing polyurethane;
s2: accurately weighing the following components in parts by weight:
1000 parts of a matrix mixture; 9 parts of sulfur-containing polyurethane; 1 part of UV powder; 1 part of blue pigment powder; 0.2 part of red pigment powder; 0.3 part of an initiator; 0.7 part of a release agent;
the matrix mixture comprises epoxy acrylic resin, dibenzyl maleate, dibenzyl phosphite and styrene;
after weighing, vacuumizing and stirring for 50min at 15 ℃;
the rest of the procedure was the same as in example 1.
The 1589 resin lenses produced in examples 1-3 were tested for final product results as shown in the following table:
the resin lens prepared by the method has better finished product qualification rate.
As a further improvement, the above-mentioned is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A sulfur-containing polyurethane modified 1.67 high-refractive-index resin lens monomer is characterized by comprising the following components in parts by weight:
800-1500 parts of matrix mixture, 5-15 parts of sulfur-containing polyurethane, 1-1.4 parts of UV powder, 1-3 parts of pigment powder, 0.1-0.3 part of initiator and 0.5-0.7 part of mold release agent;
the matrix mixture comprises epoxy acrylic resin, dibenzyl maleate, dibenzyl phosphite and styrene.
2. The sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer according to claim 1, wherein the sulfur-containing polyurethane is prepared by the following steps: adding 4,4' -dimercaptodiphenyl sulfide into a reaction kettle, heating to 100-150 ℃, stirring for 30min, cooling to 50-80 ℃, adding p-phenylene diisocyanate, and polymerizing to obtain the sulfur-containing polyurethane.
3. The sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer as claimed in claim 1, wherein the pigment powder is blue pigment powder and red pigment powder, and the mass ratio of the blue pigment powder to the red pigment powder is (2.5-10): 1.
4. the sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer according to claim 2, wherein the reaction kettle comprises a stirring device, a reflux condenser tube, a temperature detection device and a nitrogen protection device.
5. The method for preparing the sulfur-containing polyurethane modified 1.67 high refractive index resin based lens monomer according to claims 1 to 4, comprising the steps of:
s1: weighing raw materials, vacuumizing and stirring at the temperature of +/-2 ℃ (5-10 ℃), and stirring at the temperature of S2: filter-connected filling mold, S3: putting the mould into a curing oven for primary curing, S4: releasing, trimming and cleaning the substrate formed in the mold, and S5: putting the substrate into a curing furnace for secondary curing, S6: and (3) inspecting the substrate, and hardening, hardening inspection, hardening curing treatment and S7: coating the hardened and cured resin lens before putting the hardened and cured resin lens into a coating machine, and S8: and (5) inspecting and warehousing the finished product.
6. The method for preparing the sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer according to claim 5, wherein the specific process parameters of the first curing in S3 are as follows:
gradually heating to 33 ℃ at 25 ℃, curing for 0.05h, and keeping the temperature at 33 ℃ for 5h; then gradually heating to 45 ℃ and curing for 2h; continuously heating to 55 ℃, and curing for 2h; gradually heating to 70 ℃, and curing for 4h; continuously heating to 125 ℃, curing for 4h, and keeping the temperature at 125 ℃ for 3h; gradually cooling to 75 deg.C, and curing for 2h.
7. The method for preparing the sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer according to claim 5, wherein the specific process parameters of the second curing in S5 are as follows:
gradually heating to 120 ℃ at 30 ℃, curing for 2h, and keeping the temperature at 120 ℃ for 3h; gradually cooling to 30 deg.C, and curing for 0.1h.
8. The method for preparing the sulfur-containing polyurethane modified 1.67 high refractive index resin lens monomer according to claim 5, wherein the time for vacuumizing and stirring in S1 is 45-60min.
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| CN202210756487.0A CN115232421A (en) | 2022-06-30 | 2022-06-30 | 1.67 high-refractive-index resin lens monomer based on sulfur-containing polyurethane modification and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115181219A (en) * | 2022-08-09 | 2022-10-14 | 江苏可奥熙光学材料科技有限公司 | Preparation method of high-refractive-index lens |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680369A (en) * | 1984-04-11 | 1987-07-14 | Mitsui Toatsu Chemicals, Incorporated | Sulfur-containing polyurethane base lens resin |
| JPH03195733A (en) * | 1989-12-25 | 1991-08-27 | Showa Denko Kk | Resin composition having high refractive index |
| CN1405198A (en) * | 2002-11-05 | 2003-03-26 | 浙江大学 | Method for preparing optical plastic of polythiocarbamic acid ether |
| CN110256640A (en) * | 2019-06-12 | 2019-09-20 | 江苏韩创新材料有限公司 | A kind of optical mirror slip and manufacturing method |
| CN113703084A (en) * | 2021-08-30 | 2021-11-26 | 江苏韩创新材料有限公司 | Transparent blue-light-proof lens and preparation method thereof |
-
2022
- 2022-06-30 CN CN202210756487.0A patent/CN115232421A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680369A (en) * | 1984-04-11 | 1987-07-14 | Mitsui Toatsu Chemicals, Incorporated | Sulfur-containing polyurethane base lens resin |
| JPH03195733A (en) * | 1989-12-25 | 1991-08-27 | Showa Denko Kk | Resin composition having high refractive index |
| CN1405198A (en) * | 2002-11-05 | 2003-03-26 | 浙江大学 | Method for preparing optical plastic of polythiocarbamic acid ether |
| CN110256640A (en) * | 2019-06-12 | 2019-09-20 | 江苏韩创新材料有限公司 | A kind of optical mirror slip and manufacturing method |
| CN113703084A (en) * | 2021-08-30 | 2021-11-26 | 江苏韩创新材料有限公司 | Transparent blue-light-proof lens and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨欣等: "基于聚氨酯的变色镜片配方研究", 《浙江化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115181219A (en) * | 2022-08-09 | 2022-10-14 | 江苏可奥熙光学材料科技有限公司 | Preparation method of high-refractive-index lens |
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