CN111619125B - Method for manufacturing polyurethane composite lens with bulletproof function - Google Patents

Method for manufacturing polyurethane composite lens with bulletproof function Download PDF

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Publication number
CN111619125B
CN111619125B CN202010383730.XA CN202010383730A CN111619125B CN 111619125 B CN111619125 B CN 111619125B CN 202010383730 A CN202010383730 A CN 202010383730A CN 111619125 B CN111619125 B CN 111619125B
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lens
polyurethane
lenses
parts
manufacturing
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CN111619125A (en
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金婉卿
汪山献松
陈国贵
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Shanghai Weixing Optical Co ltd
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Shanghai Weixing Optical Co ltd
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Priority to CN202210311753.9A priority patent/CN114701179B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Abstract

The invention relates to a method for manufacturing a polyurethane composite lens with a bulletproof function, which is finished by adopting a mode of alternately overlapping and bonding 3-100 layers of lenses, wherein polycarbonate lenses are used at the outermost two layers, and polyurethane lenses or the alternating overlapping of the polycarbonate lenses and the polyurethane lenses are used inside; polyurethane adhesive is adopted for bonding the lenses. The special adhesive provided by the application is used for bonding, so that the lens is not broken under the strong impact of the steel ball with the weight of 16G +0.1G and the diameter of 16mm at the emission speed of 200 m/s in 20KG of nitrogen, and the lens has the requirement of a bulletproof function.

Description

Method for manufacturing polyurethane composite lens with bulletproof function
Technical Field
The invention relates to the technical field of lenses, in particular to a manufacturing method of a polyurethane composite lens with a bulletproof function.
Background
At present, due to the particularity of the use environment, the impact resistance of the military protective glasses eyeshade is superior to that of other common protective glasses, and the explosion-proof military protective glasses eyeshade mainly adopts the CE EN166 and ANSI Z87.1 standards and conforms to the anti-impact regulations MIL-PRF-31013 and MIL-V-43511BP-10621 of American military rules bulletproof glasses. Meets the quality impact-resistant international standard: U.S. Standard Z78.1, military STD-662F and European Standard EN 166. The lens with the thickness of 2.8MM and the weight of 5G +0.1G can be manufactured by adopting the material imported from foreign countries, and the lens does not crack under the strong impact of the launching speed of 200 feet/second of steel balls with the diameter of 6MM under the condition of 20KG nitrogen. However, the protection requirement is far from sufficient for the mine-clearing soldiers. If a better protection effect is desired, the test standard is to reach the aim that the lens is not cracked under the strong impact of a steel ball with the weight of 16G +0.1G and the diameter of 16MM and the launching speed of 200 feet/second at the nitrogen of 20 KG.
According to the literature retrieval: the invention discloses a Chinese patent publication No. CN 108957760A, and relates to novel anti-explosion AR glasses. A novel explosion-proof AR glasses is disclosed. Including AR glasses body, the material of the following part of AR glasses body is copper alloy or stainless steel that have explosion-proof ability: picture frame, mirror leg and mirror foot, the embedded lens group that is equipped with of picture frame, the lens is organized and is equipped with the explosion-proof lens of PC. CN 205049825U, PC polymer bulletproof polarizing glasses. The PC polymer bulletproof polarized glasses comprise an upper lens and a lower lens, a polarizing film is arranged between the upper lens and the lower lens, the upper lens comprises an upper lens upper bend and an upper lens lower bend, the radius of an arc plate of the upper lens upper bend is millimeter, the radius of an arc plate of the upper lens lower bend is millimeter, the polarizing film comprises a polarizing film upper bend and a polarizing film lower bend, the radius of an arc plate of the polarizing film upper bend is 97.6666 millimeter, the radius of an arc plate of the polarizing film lower bend is 97.5666 millimeter, the lower lens comprises a lower lens upper bend and a lower lens lower bend, the radius of an arc of the lower lens upper bend is 97.5666 millimeters, and the radius of an arc of the lower lens lower bend is 96.5666 millimeters. The PC macromolecule bulletproof polarizing glasses have the advantages that: the PC polymer bulletproof polarizing glasses are firm in structure, high in overall strength, not prone to abrasion of the polarizer and long in service life.
Chinese invention patent application No. CN201921038831 relates to a multifunctional bulletproof helmet; the patent discloses a bulletproof helmet, in particular to a multifunctional bulletproof helmet, aiming at the problems that the illuminating lamp and the camera of the prior device are not provided with a protection device, when the bulletproof helmet works in the field with more branches in daytime, the branches are easy to scrape and touch in the moving process, so that the camera and the illuminating lamp are damaged, the camera and the illuminating lamp are easy to fall dust, and the camera and the illuminating lamp need to be wiped again in each use, which is tedious, the invention provides the following scheme, which comprises a helmet, wherein the illuminating lamp is arranged on one side of the helmet, the camera is arranged in the illuminating lamp, a T-shaped fixed column is fixedly arranged on one side of the helmet, in the invention, the camera and the illuminating lamp can be protected by arranging a protective cover, the camera and the illuminating lamp are prevented from being damaged by impact, when the protective cover needs to be opened by pulling an L-shaped pull rod, the strip-shaped cleaning brush moves upwards to clean the lens of the illuminating lamp and the camera, the use requirements of people are met.
The research on the bulletproof lenses is found in China by searching documents, and many of the researches are based on the application research of PC materials, and the PC materials have strong impact resistance. The impact strength of the PC material is related to the thickness of the lens, the thicker the lens is, the stronger the impact resistance is, the PC sheet with enough thickness can prevent bullets (the thickness of the PC sheet in the bulletproof glass is 2cm, which is absolute bullet-proof), the bulletproof glasses which are called at present refer to a bulletproof sheet, but not bullet-proof, because the thickness of the lens cannot be 2cm, the thickness is too thick, therefore, the optimal thickness of the PC lens is the key of the design of the goggles, and the bulletproof sheet with certain strength can be prevented from impacting and is in the allowable range of the design of the glasses. However, if the lens is made to a thickness of 2.8mm or less, the lens cannot meet the requirement of ballistic resistance. This patent is accomplished through adopting 3-100 layers lens stack bonding's mode in turn, and the outermost two-layer polycarbonate lens that uses, inside uses the polyurethane lens or the stack in turn of polycarbonate lens and polyurethane lens, and norbornane diisocyanate and the pentaerythrityl ester of tetra (3-mercaptopropionic acid) that the polyurethane lens adopted polymerize under the organic tin catalyst effect and form. The lenses are bonded using a polyurethane adhesive. The polyurethane adhesive is mainly prepared from the following components in percentage by weight: 15-25 parts of benzhydrylpropane diisocyanate, 15-25 parts of 2, 6-toluene diisocyanate, one or more dihydroxy polyether polyols, 3000, 20-50 parts of molecular weight 1000-one, 0.5-1.5 parts of chain extender, 0.5-1.5 parts of organic tin catalyst, 20-40 parts of NN dimethylformamide and 19-38 parts of xylene. The polycarbonate and polyurethane composite lens compounded by the adhesive provided by the invention can pass through a steel ball with the weight of 16G +0.1G and the diameter of 16mm under the strong impact of the launching speed of 200 m/s at the nitrogen of 20KG, the lens does not break, and the lens has the requirement of bulletproof function.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for manufacturing a polyurethane composite lens with a bulletproof function.
The purpose of the invention is realized by the following technical scheme:
a manufacturing method of a polyurethane composite lens with a bulletproof function is completed by adopting a mode of alternately overlapping and bonding 3-100 layers of lenses, wherein polycarbonate lenses are used at the outermost two layers, and polyurethane lenses or the alternate overlapping of the polycarbonate lenses and the polyurethane lenses are used at the inner part; the lenses are bonded using a polyurethane adhesive.
The polyurethane lens is prepared by polymerizing norbornane diisocyanate and pentaerythritol tetrakis (3-mercaptopropionate) under the action of an organotin catalyst. The molar ratio of the norbornane diisocyanate to the pentaerythritol tetrakis (3-mercaptopropionate) is 1: 0.9-1: 1.
The thickness range of the polycarbonate lens is 0.1-1 mm, and the curvature radius range of the lens surface curvature is 50-20000 m;
the thickness range of the polyurethane lens is 0.1-1 mm, and the curvature radius range of the lens surface curvature is 50-20000 mm.
The organic tin catalyst can be one or a plurality of dibutyltin dilaurate, stannous octoate, dibutyltin didodecyl sulfide and dibutyltin diacetate, and the mass fraction of the organic tin catalyst in the mixture of norbornane diisocyanate and pentaerythritol tetrakis (3-mercaptopropionate) is 0.1-3%.
The polyurethane adhesive is mainly prepared from the following components in percentage by weight:
15-25 parts of benzhydrylpropane diisocyanate,
15-25 parts of 2, 6-toluene diisocyanate,
one or more dihydroxy polyether polyols having a molecular weight of 1000 to 3000, 20 to 50 parts,
0.5-1.5 parts of chain extender,
0.5 to 1.5 parts of organic tin catalyst,
20-40 parts of NN dimethylformamide,
20-40 parts of dimethylbenzene,
the preparation method of the polyurethane adhesive comprises the steps of putting a polyol mixture, NN dimethylformamide, xylene and a chain extender into a reaction kettle, uniformly stirring, adding isocyanate, and reacting for 5 hours at 70 ℃; the remaining isocyanate was added in four portions. When the viscosity reaches 100CPS (25 degrees); adding residual solvent and methanol, and continuously reacting to control the viscosity to be 100CPS (25 ℃), thus obtaining the polyurethane adhesive.
Compared with the prior art, the invention has the following positive effects:
compared with the prior art, this application is accomplished through 3 ~ 100 layers lens stack bonding's mode in turn, the polycarbonate lens is used to outermost two-layer, interior use polyurethane lens or the stack in turn of polycarbonate lens and polyurethane lens, bond through the specific adhesive that this application provided at last, can be 16G +0.1G through weight, the diameter is under the powerful impact that emission speed is 200 meters/second when nitrogen gas 20KG for 16 mm's steel ball, the lens does not break, the lens has bulletproof function's requirement.
Detailed Description
The following provides a specific embodiment of the method for manufacturing a polyurethane composite lens having a bulletproof function according to the present invention.
Example 1
Preparation of polyurethane adhesive: accurately weighing dihydroxy polyether polyol with the molecular weight of 2000, 20 g; NN dimethylformamide, 12 g; xylene, 12.5 grams; 0.5 g of chain extender; 0.5 g of catalyst is put into a reaction kettle in sequence, after being stirred evenly for 30 minutes, 10.5 g of benzhydrylpropane diisocyanate and 10.5 g of 2, 6-toluene diisocyanate are added. After the addition, the mixture was heated to 70 ℃ with stirring, and reacted at 70 ℃ for 5 hours. The remaining 4.5 g of benzhydrylpropane diisocyanate and 4.5 g of 2, 6-tolylene diisocyanate were added in four portions with 10 minute intervals, and then the viscosity of the reaction solution was monitored, and when the viscosity reached 100CPS (25 degrees), NN dimethylformamide was added in 12 g; xylene, 12.5 g. And (5) continuously reacting until the viscosity reaches 100CPS (25 degrees). 6 polycarbonate lenses are prepared by injection molding, the thickness of the lens is 0.2 mm, and the curvature radius range of the lens surface curve is 10000 mm. The polyurethane lens is prepared by polymerizing norbornane diisocyanate and pentaerythritol tetra (3-mercaptopropionate) under the action of dibutyltin dichloride, and 5 polymerized lenses are provided, the thickness of the lens is 0.2 mm, and the curvature radius range of the lens surface curvature is 10000 mm. And finally, gluing, tabletting and curing by adopting a tabletting machine, wherein the polycarbonate lens is arranged on the outermost layer, and the middle layer is subjected to surface mounting in a mode of alternately overlapping the polycarbonate lens and the polyurethane lens. Finally, the polycarbonate and polyurethane composite lens with 11-layer structure is obtained. The lens is impacted by a strong force with the weight of 16G +0.1G and the launching speed of a steel ball with the diameter of 16mm at the nitrogen of 20KG, the impact is first intact, and the lens has a good bulletproof function.
Example 2
Preparation of polyurethane adhesive: accurately weighing dihydroxy polyether polyol with the molecular weight of 2000, 20 g; NN dimethylformamide, 12 g; xylene, 12.5 grams; 0.5 g of chain extender; 0.5 g of catalyst is put into a reaction kettle in sequence, after being stirred evenly for 30 minutes, 10.5 g of benzhydrylpropane diisocyanate and 10.5 g of 2, 6-toluene diisocyanate are added. After the addition, the mixture was heated to 70 ℃ with stirring, and reacted at 70 ℃ for 5 hours. The remaining 4.5 g of benzhydrylpropane diisocyanate and 4.5 g of 2, 6-tolylene diisocyanate were added in four portions with 10 minute intervals, and then the viscosity of the reaction solution was monitored, and when the viscosity reached 100CPS (25 degrees), NN dimethylformamide was added in 12 g; xylene, 12.5 g. And (5) continuously reacting until the viscosity reaches 100CPS (25 degrees). 12 polycarbonate lenses are prepared by injection molding, the thickness of the lens is 0.1 mm, and the curvature radius range of the lens surface curve is 10000 mm. The polyurethane lens is prepared by polymerizing norbornane diisocyanate and pentaerythritol tetra (3-mercaptopropionate) under the action of dibutyltin dichloride, wherein the thickness of the polymerized lens is 0.1 mm, and the curvature radius range of the surface curvature of the lens is 10000 mm. And finally, gluing, tabletting and curing by adopting a tabletting machine, wherein the polycarbonate lens is arranged on the outermost layer, and the middle layer is subjected to surface mounting in a mode of alternately overlapping the polycarbonate lens and the polyurethane lens. Finally, the polycarbonate and polyurethane composite lens with 11-layer structure is obtained. The lens is impacted by a strong force with the weight of 16G +0.1G and the launching speed of a steel ball with the diameter of 16mm at the nitrogen of 20KG, the impact is first intact, and the lens has a good bulletproof function.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be regarded as being within the protection scope of the present invention.

Claims (4)

1. A manufacturing method of a polyurethane composite lens with a bulletproof function is characterized in that the manufacturing method is finished by adopting a mode of alternately overlapping and bonding lenses, polycarbonate lenses are used at the outermost two layers, and the polycarbonate lenses and the polyurethane lenses are alternately overlapped inside; polyurethane adhesive is adopted for bonding the lenses;
the polyurethane lens is prepared by polymerizing norbornane diisocyanate and pentaerythritol tetra (3-mercaptopropionate) under the action of an organic tin catalyst, wherein the molar ratio of the norbornane diisocyanate to the pentaerythritol tetra (3-mercaptopropionate) is 1: 0.9-1: 1;
6 polycarbonate lenses, wherein the thickness of each lens is 0.2 mm, and the curvature radius range of the lens surface bend is 10000 mm;
5 polyurethane lenses, the lens thickness is 0.2 mm, and the radius of curvature of the lens surface curve is 10000 mm.
2. The method for manufacturing a polyurethane composite lens having a bulletproof function according to claim 1, wherein the organotin catalyst is one or more of dibutyltin dilaurate, stannous octoate, dibutyltin bis (dodecylthio) and dibutyltin diacetate, and the mass fraction of the organotin catalyst in a mixture of norbornane diisocyanate and pentaerythritol tetrakis (3-mercaptopropionate) is 0.1 to 3%.
3. The method for manufacturing a polyurethane composite lens with a bulletproof function according to claim 1, wherein the polyurethane adhesive consists essentially of the following components in parts by weight:
15-25 parts of benzhydrylpropane diisocyanate,
15-25 parts of 2, 6-toluene diisocyanate,
one or more dihydroxy polyether polyols having a molecular weight of 1000 to 3000, 20 to 50 parts,
0.5-1.5 parts of chain extender,
0.5 to 1.5 parts of organic tin catalyst,
20-40 parts of NN dimethylformamide,
20-40 parts of dimethylbenzene.
4. The method for manufacturing a polyurethane composite lens with a bulletproof function as claimed in claim 1, wherein the polyurethane adhesive is manufactured by putting a polyol mixture, NN dimethylformamide, xylene and a chain extender into a reaction kettle, stirring uniformly, adding isocyanate, and reacting at 70 ℃ for 5 hours; adding the rest isocyanate in 4 batches; when the viscosity reaches 100 CPS; adding the residual solvent and methanol, and continuously reacting to control the viscosity to be 100CPS, thus obtaining the polyurethane adhesive.
CN202010383730.XA 2020-05-09 2020-05-09 Method for manufacturing polyurethane composite lens with bulletproof function Active CN111619125B (en)

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