CN107015380B - Color-changing layer material, product and preparation method thereof - Google Patents
Color-changing layer material, product and preparation method thereof Download PDFInfo
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- CN107015380B CN107015380B CN201710243982.0A CN201710243982A CN107015380B CN 107015380 B CN107015380 B CN 107015380B CN 201710243982 A CN201710243982 A CN 201710243982A CN 107015380 B CN107015380 B CN 107015380B
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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
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/102—Photochromic filters
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- 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
- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance 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
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- 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
- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/20—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising esters
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- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
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- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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- 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
- B32B2307/554—Wear resistance
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- 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
- B32B2307/584—Scratch resistance
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- 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
- B32B2551/00—Optical elements
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
- Optical Filters (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of optical elements, and particularly discloses a color-changing layer material, a product and a preparation method thereof, wherein the color-changing layer material sequentially comprises the following components from inside to outside: a CR39 layer; a color-changing layer; and a CR39 layer; the color changing layer includes a photochromic compound and cellulose triacetate.
Description
Technical Field
The invention relates to the technical field of optical elements, in particular to a color-changing layer material, a color-changing layer product and a preparation method of the color-changing layer material.
Background
CR-39 was the first generation of ultra-light, impact resistant resin lenses. As a thermosetting material, CR-39 is used as an optical lens, and the parameters of the properties of the CR-39 material are quite suitable: the glass has the advantages of 1.5 (close to common glass lenses), 1.32 specific gravity (almost half of glass), 58-59 Abbe number (only little dispersion), impact resistance, high light transmittance, and capability of being dyed and coated. However, the main disadvantage is that the abrasion resistance is not as good as that of glass, and the abrasion resistant film plating treatment is required.
At present, the color-changing sheet is mainly divided into a base-changing sheet and a film-changing sheet according to the process. The basic change is mainly that the color-changing agent is mixed in the monomer raw materials, the whole lens is filled with the color-changing agent after being produced, and the lens has the advantages of long color-changing time and high temperature resistance, and has the defects of high-degree lenses and uneven color due to uneven thickness. The film-changing lens is characterized in that a thin color-changing agent is sprayed on the surface film layer of the lens A, and the defects of short service life, easy scratch, poor demolding and poor aging resistance of the color-changing layer are overcome.
Therefore, it is necessary to develop a new process, which has the advantages of both base transformation and membrane transformation, and overcomes the disadvantages of CR-39 color-changing layer material with poor wear resistance and the products thereof.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a color-changing layer material, which comprises, in order from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color changing layer includes a photochromic compound and cellulose triacetate.
In a preferred embodiment, the weight ratio of the photochromic compound to the cellulose triacetate in the color-changing layer is (1-20): 100.
in a preferred embodiment, the cellulose triacetate further comprises cellulose acetate butyrate.
In a preferred embodiment, the weight ratio of cellulose triacetate to cellulose acetate butyrate is 100: (1-30).
In a preferred embodiment, the weight ratio of cellulose triacetate to cellulose acetate butyrate is 20: 1.
in a preferred embodiment, the CR39 layer is polymerized from CR39 monomers.
A second aspect of the present invention provides a method for preparing a color-changing layer material,
at least comprises the following steps:
providing a color changing layer;
providing a CR39 monomer;
the upper and lower surfaces of the color shifting layer are cross-linked with CR39 monomer.
In a preferred embodiment, the mass ratio of the CR39 monomer to the color-changing layer is 10: (1-30).
A third aspect of the invention provides an ophthalmic lens article comprising the above color-changing layer material.
The fourth aspect of the invention provides the application of the color-changing layer material in the fields of spectacle lenses and optical communication.
The above-described and other features, aspects, and advantages of the present application will become more apparent with reference to the following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1: the schematic diagram of the color-changing layer material obtained in example 1,
wherein 1 represents a CR39 layer, 2 represents a discoloration layer, and 3 represents a CR39 layer.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. In the following specification and claims, reference will be made to a number of terms which shall be defined to have the following meanings.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.
"optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
The expression a range includes all integers within the range as well as fractions thereof. The expression a range also includes the endpoints of the range, regardless of whether the range indicates a value that is "within" or "between" or "the" some of the stated values. Ranges stated in this disclosure and the claims are intended to specifically include the full range and not just one or more endpoints. For example, a stated range of 0 to 10 is intended to disclose all integers between 0 and 10, e.g., 1, 2, 3, 4, etc., all fractions between 0 and 10, e.g., 1.5, 2.3, 4.57, 6.1113, etc., and the endpoints 0 and 10.
As used herein, the term "photochromic" and similar terms, such as "photochromic compound," mean having an absorption spectrum for at least visible light that changes in response to the absorption of at least actinic radiation. Furthermore, as used herein, the term "photochromic material" means any substance that is suitable to exhibit photochromic properties (i.e., that is suitable to have an absorption spectrum for at least visible light that is variable in response to at least the absorption of actinic radiation) and that comprises at least one photochromic compound.
As used herein, the term "photochromic compound" includes both thermally reversible photochromic compounds and non-thermally reversible photochromic compounds. As used herein, the term "thermally reversible photochromic compound/material" refers to a compound/material that is capable of transforming from a first state, e.g., "clear state", to a second state, e.g., "colored state", in response to actinic radiation, and reverting back to the first state in response to thermal energy. As used herein, the term "non-thermally reversible photochromic compound/material" means a compound/material that is capable of converting from a first state, e.g., "clear state," to a second state, e.g., "colored state," in response to actinic radiation, and reverts back to the first state (e.g., ceases exposure to such actinic radiation) in response to actinic radiation of substantially the same wavelength as the absorption of the colored state.
The first aspect of the invention provides a color-changing layer material, which comprises the following components in sequence from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color changing layer comprises a color changing compound and cellulose triacetate.
Layer CR39
The CR39 layer is obtained by polymerizing a CR39 monomer, and part of the CR39 monomer can chemically react with the color-changing layer, so that the CR39 layer is connected with the color-changing layer to obtain the color-changing layer material.
The CR39 monomer is known as carbon acrylic acid acetate or allyl diglycolate, referred to as ADC resin. The CR39 monomer of the invention is commercially available. Of course, in the present invention, the CR39 layer may be obtained by polymerizing not only CR39 monomers but also CR39 monomers and monomers having double bonds.
Examples of the monomer having a double bond include alkyl (meth) acrylates such as ethylene, propylene, butene, pentene, hexene, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, lauryl (meth) acrylate, myristyl (meth) acrylate, cetyl (meth) acrylate, octadecyl (meth) acrylate, behenyl (meth) acrylate, and 2-ethylhexyl (meth) acrylate; benzyl (meth) acrylate; tetrahydrofurfuryl (meth) acrylate; (meth) acrylates having an amino group such as dimethylaminoethyl (meth) acrylate and dimethylaminopropyl (meth) acrylate; (meth) acrylic esters having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate; (meth) acrylamide derivatives such as (meth) acryloylmorpholine and N, N-dimethyl (meth) acrylamide; 2-vinylpyridine; 4-vinylpyridine; n-vinyl pyrrolidone; n-vinylformamide; vinyl acetate, and the like.
Examples of the monomer having two double bonds include 1, 4-butanediol di (meth) acrylate, 1, 6-hexanediol di (meth) acrylate, 1, 9-nonanediol di (meth) acrylate, 1, 10-decanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, tetrapropylene glycol di (meth) acrylate, bisphenol a di (meth) acrylate, ethoxylated bisphenol a di (meth) acrylate, propoxylated bisphenol a di (meth) acrylate, pentaerythritol di (meth) acrylate, and the like.
From the viewpoint of high light transmittance and ultraviolet resistance of the color change layer material of the present invention, it is preferably any one or a mixture of several kinds of butene, methyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 1, 4-butanediol dimethacrylate, diethylene glycol dimethacrylate, and dipropylene glycol diacrylate.
In a preferred embodiment, the double bond containing monomer is selected from the group consisting of: mixing butylene, tert-butyl methacrylate and 1, 4-butanediol dimethacrylate, wherein the weight ratio of butylene to tert-butyl methacrylate to 1, 4-butanediol dimethacrylate is as follows: 1: 10: (1-5).
In a preferred embodiment, the weight ratio between the CR39 monomer and the double bond containing monomer is: 100: (1-5).
The inventor surprisingly finds that after the monomer containing double bonds is added, the concentration of the CR39 monomer can be adjusted, different polar groups can be introduced, chemical bonding can be generated between the polar groups and the color changing layer, the acting force between the CR39 layer and the color changing layer is further enhanced, and the wear resistance is improved.
In a preferred embodiment, the CR39 monomer is CR39 type core-shell particles.
In the present invention, the "CR 39 type core-shell particles" are CR39 type core-shell particles obtained by using silane coupling agent-modified silica as a core and CR39 monomer as a shell.
In a preferred embodiment, the preparation method of the "CR 39 type core-shell particles" comprises the following steps:
(1) the preparation method of the silane coupling agent modified nano silicon dioxide comprises the following steps:
dispersing 0.5g of nano silicon dioxide in 75mL of toluene, continuously stirring for 1h at 340K, and then adding 3.5mg of p-toluenesulfonic acid and 0.5mmol of silane coupling agent kh 550; the mixture was then heated to near reflux (about 390K) and stirred for 2 h; and finally, filtering the solid, washing the solid for 3 times by using absolute ethyl alcohol, and drying the solid for 12 hours at 373K to obtain the silane coupling agent modified nano silicon dioxide.
(2) The preparation method of the CR39 type core-shell particle comprises the following steps:
dispersing and dissolving silane coupling agent modified nano-silica and an initiator diisopropyl peroxy dicarbonate (IPP, produced by Mitongtao glass Co., Ltd., Danyang) in a CR39 monomer, wherein the weight ratio of the silane coupling agent modified nano-silica, the diisopropyl peroxy dicarbonate and the CR39 monomer is as follows: (5-15): 1: 100. after stirring uniformly, heating to 50 ℃, reacting for 2 hours, then cooling to 30 ℃ in an ice water bath, and continuing to react for 3 hours to obtain the CR39 type core-shell particles.
The inventor also unexpectedly finds that the wear resistance can be further increased by adopting the CR39 type core-shell particles to serve as the CR39 monomer, and the inventor guesses that the possible reason is that the CR39 type core-shell particles can serve as both the CR39 monomer and the filler, and the same substance can achieve the action effect of two substances.
Color changing layer
In the present invention, the color-changing layer includes a color-changing compound and cellulose triacetate.
The color-changing compound is a photochromic compound;
the cellulose triacetate may also be referred to as cellulose beads, cellulose pellets, cellulose gel, pearl-like cellulose, beaded cellulose.
The photochromic compounds of the present invention and cellulose triacetate are commercially available.
In a preferred embodiment, the cellulose triacetate has an acetic acid content of: 60 to 65 percent.
The cellulose triacetate of the present invention can be commercially available or synthesized by a method known to those skilled in the art.
In a preferred embodiment, the cellulose triacetate further comprises cellulose acetate butyrate, wherein the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 100: (1-30).
In a preferred embodiment, the cellulose triacetate further comprises 0.1 part by weight of chitosan-cyclodextrin modified cellulose triacetate.
The term "chitosan-cyclodextrin modified cellulose triacetate" refers to a cellulose triacetate that is first grafted with cyclodextrin onto chitosan to give cyclodextrin-chitosan, and then modified with cyclodextrin-chitosan.
In a preferred embodiment, the chitosan-cyclodextrin modified cellulose triacetate is prepared by the following method:
(1) adding 0.01mol of cyclodextrin, 0.1mol of p-nitrobenzenesulfonyl chloride, 20ml of anhydrous dimethyl sulfoxide and 0.1mol of triethylamine into a 200ml round-bottom flask, and carrying out oil bath reaction for 1 hour at the constant temperature of 60 ℃;
(2) adding 50ml of aqueous solution dissolved with 0.01mol of chitosan powder into the solution obtained in the step (1), and continuing to react for 24 hours;
(3) and (3) cooling the reaction liquid obtained in the step (2) to room temperature, adding 200ml of deionized water, transferring to an ultrafiltration membrane with the molecular weight cutoff of 5 ten thousand Da, pressurizing with nitrogen, carrying out ultrafiltration on the volume of the solution to 50ml, adding 200ml of deionized water, and repeating the ultrafiltration cycle for 5 times. Transferring the solution in the ultrafiltration cup to a 250ml round bottom flask, rotating in liquid nitrogen to fix the solution on the wall of the round bottom flask, and finally freeze-drying the sample by using a freeze dryer to obtain the chitosan-cyclodextrin.
(4) And (2) adding 100ml of dimethylformamide solvent into a 200ml round-bottom flask, weighing 1g of chitosan-cyclodextrin obtained in the step (3), stirring to dissolve, adding 80g of cellulose triacetate, heating to 100 ℃, reacting for 3h, filtering the obtained product, and drying to obtain the chitosan-cyclodextrin modified cellulose triacetate.
Photochromic compounds
The term "photochromic compound", photochromic compound is not particularly limited, and known compounds may be used. For example, photochromic compounds described in the following documents may be used: japanese patent application publication (Toku-kai-Hei)2-28165, Japanese patent application publication (Toku-kai-Sho)62-288830, International publication WO94/22850 pamphlet, International publication WO96/14596 pamphlet, International publication WO01/60811 pamphlet, U.S. Pat. No. 4913544 and U.S. Pat. No. 5623005. The amount of the photochromic compound may be appropriately determined depending on the use of the photochromic coating agent or the cast curable composition.
In one embodiment, a non-limiting example of the photochromic compound is an organic photochromic compound having a desired chromatic color. They typically have at least one activated absorption peak in the range of about 400-700 nm. They may be used alone or in combination with photochromic compounds that complement their activated color.
In one non-limiting embodiment, the photochromic compounds include chromenes such as naphthopyrans, benzopyrans, indolocaphthopyrans, and phenanthropyrans; spiropyrans, such as spiro (benzindoline) naphthopyrans, spiro (indoline) benzopyrans, spiro (indoline) naphthopyrans, spiro (indoline) quinropyrans and spiro (indoline) pyrans; oxazines, such as spiro (indoline) phenazine, spiro (indoline) pyridobenzoxazine, spiro (indoline) phenazine, and spiro (indoline) benzoxazine; mercury salts of dithizone, fulgides, fulgimides, and mixtures of these photochromic compounds. These photochromic compounds are described in U.S. Pat. Nos. 5,645,767, 6,153,126 and US6,296,785B1 at column 30, line 44 to column 31, line 5.
Wherein the photochromic compound includes, but is not limited to, 3-bis (4-methoxyphenyl) -12-bromo-6, 13, 13-trimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3, 3-bis (4-methoxyphenyl) -10, 12-dichloro-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3, 3-bis (4-methoxyphenyl) -6, 7-dimethoxy-10, 12-bis (trifluoromethyl) -13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3, 3-bis (4-methoxyphenyl) -10, 12-dibromo-6-trifluoromethyl-6, 7-dimethoxy-11, 13, 13-trimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3- (4-butoxyphenyl) -3- (4-methoxyphenyl) -10, 12-dibromo-6-trifluoromethyl-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3, 3-bis (4-fluorophenyl) -10, 12-dibromo-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3, 3-bis (4-methoxyphenyl) -10, 12-dibromo-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3- (4-fluorophenyl) -3- (4- (piperidin-1-yl) phenyl) -10, 12-dibromo-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3-phenyl-3- (4-morpholinylphenyl) -10, 11, 12-trimethoxy-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3- (4-methoxyphenyl) -3- (4-morpholinylphenyl) -5, 7-difluoro-10, 11, 12-trimethoxy-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; 3-phenyl-3- (4-morpholinylphenyl) -6, 7-dimethoxy-12-trifluoromethyl-13, 13-dimethyl-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran; and/or any one or a mixture of several of 3, 3-bis (4-methoxyphenyl) -6, 7, 10, 12-tetramethoxy-13, 13-dimethyl-3H, 13H-indeno [2 ', 3': 3, 4] naphtho [1, 2-b ] pyran and 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran.
In a preferred embodiment, the color-changing layer may further include 1 to 50 parts by weight of inorganic oxide fine particles.
Inorganic oxide particles
By adding the inorganic oxide particles, the refractive index of the discoloration layer can be improved, and the scratch resistance of the discoloration layer can be more improved.
Specifically, silica can be used as the inorganic oxide particles. When the inorganic oxide particles are added for increasing the refractive index, fine particles of an inorganic oxide or a composite inorganic oxide containing at least one element selected from the group consisting of Si, Al, Ti, Fe, In, Zr, Ag, Au, Sn, Sb, W, and Ce; more specifically, fine particles of an inorganic oxide or a composite inorganic oxide containing at least one element selected from the group consisting of Si, Al, Ag, Ti, Fe, Zr, Sb, and W may be more preferably used. The inorganic oxide particles preferably have a primary particle diameter of about 1 to 300nm as observed by a Transmission Electron Microscope (TEM). The fine particles having such a particle diameter are generally used in a state where they are dispersed in water as a dispersion medium or in a part of an organic solvent (particularly, an alcoholic solvent) described later; colloidal dispersions are commonly used to prevent fine particles from coagulating. For example, in the present invention, from the viewpoint that the inorganic oxide particles are homogeneously dispersed in the color-changing layer, it is preferable to add the inorganic oxide particles to the color-changing layer in the form of a sol in which they are dispersed in a water-soluble organic solvent such as methanol, ethanol, isopropanol, or the like, or water.
As described above, as the water-soluble organic solvent used for the dispersion medium for inorganic oxide particles, alcohol solvents such as methanol, ethanol, isopropanol, and the like; however, methyl ethyl ketone, methyl isobutyl ketone, dimethylacetamide, and the like can also be used.
That is, in the present invention, it is preferable to mix the inorganic oxide particles with other components in the form of a sol in which the inorganic oxide particles are dispersed in water or the above-mentioned water-soluble organic solvent, specifically, in the form of a silica sol, an inorganic oxide particle sol, or a composite inorganic oxide particle sol. The order of mixing the inorganic oxide particles with the other components is not particularly limited.
The silica sol may be commercially available; for example, sols containing water as the dispersing medium are available from NISSANCHEMICAL INDUSTRIES, LTD under the registered trade names "Snowtex", "Snowtex OS", "Snowtex O", or "Snowtex O-40". Sols containing a water-soluble organic solvent as a dispersion medium are commercially available from NISSAN CHEMICAL INDUSTRIES under the trade names "methanol silica sol", "MA-ST-MS" (dispersion medium: methanol), "IPA-ST" (dispersion medium: isopropanol), etc.
Sols of composite inorganic oxide particles may also be commercially available; for example, "HX series", "HIT series" or "HT series" manufactured by NISSAN chemicadussters, LTD and "opthale" (registered trademark) manufactured by JGC catalysts and chemicals LTD.
In a preferred embodiment, the inorganic oxide particles are mesoporous silica.
In the invention, the mesoporous silica is silica with the aperture of 2 nm-50 nm.
The "mesoporous silica" is preferably any one of MCM-41 and SBA-15, and the MCM-41 and SBA-15 in the invention can be obtained commercially or synthesized by any method known by those skilled in the art.
The mesoporous silica used in the invention is purchased from Nanjing Xiancheng nanometer material science and technology Limited.
In a preferred embodiment, the "mesoporous silica" in the present invention is in the form of monodisperse mesoporous silica nanospheres, which are also available from Nanjing Xiapong nanomaterial science and technology Limited.
In a preferred embodiment, the color-changing layer further comprises an organosilicon compound.
The "organosilicon compound" is an organosilicon compound containing hydrolyzable groups.
Examples of the organosilicon compound include gamma-glycidoxypropyltrimethoxysilane, gamma-glycidoxypropylmethyldimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, gamma-glycidoxypropyltriethoxysilane, β - (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, tetraethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltriphenoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, cyclohexylmethyldimethoxysilane, N-propyltrimethoxysilane, N-butyltrimethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, N-hexyltrimethoxysilane, N-hexyltriethoxysilane, N-octyltriethoxysilane, N-decyltrimethoxysilane, 1, 6-bistrimethoxysilane, 3-ureidopropyltriethoxysilane, bis [3- (diethoxymethylsilyl) propyl ] carbonate, trifluoropropyltrimethoxysilane, perfluorooctyltriethoxysilane, gamma-chloropropyltrimethoxysilane, vinyltris (β -methoxyethoxy) trimethoxysilane, gamma-allyltrimethoxysilane, N-aminopropyltrimethoxysilane, gamma-N-aminopropyltrimethoxysilane, N-glycidoxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, N-glycidyloxyethyltrimethoxysilane, N-glycidyloxypropyltrimethoxysilane, N-glycidyloxypropylgamma-glycidyloxypropyltrimethoxysilane, N-glycidyloxyethyltrimethoxysilane, N-glycidyloxypropyltrimethoxysilane, N-glycid.
A second aspect of the present invention provides a method for preparing a color-changing layer material,
at least comprises the following steps:
providing a color changing layer;
providing a CR39 monomer;
the upper and lower surfaces of the color shifting layer are cross-linked with CR39 monomer.
In a preferred embodiment, the mass ratio of the CR39 monomer to the color-changing layer is 10: (1-30).
A third aspect of the invention provides an ophthalmic lens article comprising the above color-changing layer material.
The fourth aspect of the invention provides the application of the color-changing layer material in the fields of spectacle lenses and optical communication.
The implementation mode is as follows:
embodiment 1: embodiment 1 of the present invention provides a color change layer material, which includes, in order from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color changing layer includes a photochromic compound and cellulose triacetate.
Embodiment 2: embodiment 2 is the same as embodiment 1, except that the weight ratio of the discoloration compound to the triacetylcellulose in the discoloration layer is (1 to 20): 100.
embodiment 3: embodiment 3 is the same as embodiment 1, except that the cellulose triacetate further includes cellulose acetate butyrate.
Embodiment 4: embodiment 4 is the same as embodiment 3, except that the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 100: (1-30).
Embodiment 5: embodiment 5 is the same as embodiment 4, except that the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 20: 1.
embodiment 6: embodiment 6 is the same as embodiment 1, except that the CR39 layer is obtained by polymerizing CR39 monomer.
Embodiment 7: the method for preparing a color-changing layer material according to embodiment 1 to 6 includes at least the following steps:
providing a color changing layer;
providing a CR39 monomer;
the upper and lower surfaces of the color shifting layer are cross-linked with CR39 monomer.
Embodiment 8: embodiment 8 is the same as embodiment 7, except that the mass ratio of the CR39 monomer to the color-changing layer is 10: (1-30).
Embodiment 9: embodiment 9 provides an ophthalmic lens article comprising the above-described color-changing layer material.
Embodiment 10: the discoloration layer material described in embodiments 1 to 6 is applied to the fields of spectacle lenses and optical communication.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are commercially available, unless otherwise specified, and the parts used for the following materials are parts by weight.
Example 1
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 100, respectively;
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate is available from Heibo Heibao Chemicals, Beijing.
Method for preparing color-changing layer：
Weighing the color-changing compound and the cellulose triacetate according to parts by weight, dissolving in dichloromethane to form viscous liquid, and carrying out a salivating process, namely salivating the viscous liquid on a flat and uniform rotary smooth support to form a film layer.
Preparation method of color-changing layer material：
Providing a color changing layer;
providing a CR39 monomer;
the upper and lower surfaces of the color shifting layer are cross-linked with CR39 monomer.
Wherein the mass ratio of the CR39 monomer to the color-changing layer is 10: 1.
the method comprises the following specific steps:
adding a CR-39 monomer and an initiator (diisopropyl peroxydicarbonate, IPP) into a batching apparatus, wherein the using amount of the IPP is 2.5 percent of that of the CR-39 monomer, fully stirring, carrying out polymerization reaction at 85 ℃ for 5 hours, adding a color-changing layer, and carrying out heat preservation at 65 ℃ for 10 hours to obtain the color-changing layer material.
Example 2
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 5;
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate is available from Heibo Heibao Chemicals, Beijing.
The preparation method of the color-changing layer is the same as that of example 1;
the preparation method of the color-changing layer material is the same as that of the embodiment 1, and is different from the embodiment 1 in that the mass ratio of the CR39 monomer to the color-changing layer is 1: 2.
example 3
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate is available from Heibo Heibao Chemicals, Beijing.
The preparation method of the color-changing layer is the same as that of example 1;
the preparation method of the color-changing layer material is the same as that of the embodiment 1, and is different from the embodiment 1 in that the mass ratio of the CR39 monomer to the color-changing layer is 1: 1.
example 4
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 100: 1.
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and cellulose acetate butyrate were purchased from Beijing Heibao chemical Co.
The preparation method of the color-changing layer is the same as that of the embodiment 1, and the difference is that cellulose acetate butyrate is also added;
the preparation method of the color-changing layer material is the same as that of the embodiment 1, and is different from the embodiment 1 in that the mass ratio of the CR39 monomer to the color-changing layer is 1: 1.
example 5
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 10: 3;
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and cellulose acetate butyrate were purchased from Beijing Heibao chemical Co.
The preparation method of the color-changing layer is the same as that of the embodiment 1, and the difference is that cellulose acetate butyrate is also added;
the preparation method of the color-changing layer material is the same as that of the embodiment 1, and is different from the embodiment 1 in that the mass ratio of the CR39 monomer to the color-changing layer is 1: 2.
example 6
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 20: 1;
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and cellulose acetate butyrate were purchased from Beijing Heibao chemical Co.
The preparation method of the color-changing layer is the same as that of the embodiment 1, and the difference is that cellulose acetate butyrate is also added;
the preparation method of the color-changing layer material is the same as that of the embodiment 1, and is different from the embodiment 1 in that the mass ratio of the CR39 monomer to the color-changing layer is 1: 3.
example 7
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 20: 1.
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and cellulose acetate butyrate were purchased from Beijing Heibao chemical Co.
The preparation method of the color-changing layer was the same as in example 6;
the preparation method of the color-changing layer material is the same as that of the embodiment 6, and is different in that the CR39 monomer comprises a substance containing double bonds;
the double-bond-containing substances are as follows: mixing butylene, tert-butyl methacrylate and 1, 4-butanediol dimethacrylate, wherein the weight ratio of butylene to tert-butyl methacrylate to 1, 4-butanediol dimethacrylate is as follows: 1: 10: 1.
the weight ratio of the CR39 monomer to the total amount of the double-bond-containing monomer is as follows: 100: 1.
example 8
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 20: 1.
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and the cellulose acetate butyrate are purchased from Beijing Heibao chemical reagent company;
the preparation method of the color-changing layer is the same as that in example 7, and the difference is that the cellulose triacetate further comprises chitosan-cyclodextrin modified cellulose triacetate;
wherein the weight ratio of the cellulose triacetate to the chitosan-cyclodextrin modified cellulose triacetate is 100: 0.1;
the preparation method of the chitosan-cyclodextrin modified cellulose triacetate comprises the following steps:
(1) adding β -cyclodextrin 0.01mol, p-nitrobenzenesulfonyl chloride 0.1mol, anhydrous dimethyl sulfoxide 20ml and triethylamine 0.1mol into a 200ml round bottom flask, and carrying out oil bath reaction for 1 hour at the constant temperature of 60 ℃;
(2) adding 50ml of aqueous solution dissolved with 0.01mol of chitosan powder into the solution obtained in the step (1), and continuing to react for 24 hours;
(3) and (3) cooling the reaction liquid obtained in the step (2) to room temperature, adding 200ml of deionized water, transferring to an ultrafiltration membrane with the molecular weight cutoff of 5 ten thousand Da, pressurizing with nitrogen, carrying out ultrafiltration on the volume of the solution to 50ml, adding 200ml of deionized water, and repeating the ultrafiltration cycle for 5 times. Transferring the solution in the ultrafiltration cup to a 250ml round bottom flask, rotating in liquid nitrogen to fix the solution on the wall of the round bottom flask, and finally freeze-drying the sample by using a freeze dryer to obtain the chitosan-cyclodextrin.
(4) And (2) adding 100ml of dimethylformamide solvent into a 200ml round-bottom flask, weighing 1g of chitosan-cyclodextrin obtained in the step (3), stirring to dissolve, adding 80g of cellulose triacetate, heating to 100 ℃, reacting for 3h, filtering the obtained product, and drying to obtain the chitosan-cyclodextrin modified cellulose triacetate.
The preparation method of the color-changing layer material is the same as that of example 7.
Example 9
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate;
the weight ratio of the color-changing compound to the cellulose triacetate is 1: 10;
the cellulose triacetate also comprises cellulose acetate butyrate, and the weight ratio of the cellulose triacetate to the cellulose acetate butyrate is 20: 1.
the color-changing compound is 3, 3-diphenyl-3H-naphtho [2,1-b ] pyran, and is purchased from Tianjin Setty science and technology development Co., Ltd;
the cellulose triacetate and the cellulose acetate butyrate are purchased from Beijing Heibao chemical reagent company;
the preparation method of the color-changing layer is the same as that of example 8;
the preparation method of the color-changing layer material is the same as that of the example 8, and the difference is that the CR39 monomer is CR39 type core-shell particles.
The preparation method of the CR39 type core-shell particle comprises the following steps:
(1) the preparation method of the silane coupling agent modified nano silicon dioxide comprises the following steps:
dispersing 0.5g of nano silicon dioxide in 75mL of toluene, continuously stirring for 1h at 340K, and then adding 3.5mg of p-toluenesulfonic acid and 0.5mmol of silane coupling agent kh 550; the mixture was then heated to near reflux (about 390K) and stirred for 2 h; and finally, filtering the solid, washing the solid for 3 times by using absolute ethyl alcohol, and drying the solid for 12 hours at 373K to obtain the silane coupling agent modified nano silicon dioxide.
(2) The preparation method of the CR39 type core-shell particle comprises the following steps:
dispersing and dissolving silane coupling agent modified nano-silica and an initiator diisopropyl peroxy dicarbonate (IPP, produced by Mitongtao glass Co., Ltd., Danyang) in a CR39 monomer, wherein the weight ratio of the silane coupling agent modified nano-silica, the diisopropyl peroxy dicarbonate and the CR39 monomer is as follows: (5-15): 1: 100. after stirring uniformly, heating to 50 ℃, reacting for 2 hours, then cooling to 30 ℃ in an ice water bath, and continuing to react for 3 hours to obtain the CR39 type core-shell particles.
Example 10
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the CR39 layer and the discoloration layer are the same as those in example 9, and the difference is that the discoloration layer further includes inorganic oxide particles, and the inorganic oxide particles are monodisperse mesoporous silica nanospheres, which are purchased from Nanjing Xiancheng nanomaterial science and technology Limited;
the discoloration layer was prepared in the same manner as in example 9.
Example 11
A color-changing layer material sequentially comprises from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the CR39 layer and the color-changing layer were the same as in example 10, except that the color-changing layer further included an organic silicon compound, and the organic silicon compound was methacryloxypropyltriethoxysilane.
Test method
1. The optical transmittance is tested by adopting a standard QB 2506-2001, wherein the model of the optical transmittance measuring instrument is XB125/L103, and the brand: chinese and Western;
2. optical uniformity, testing the reflectivity of the central point and the edge point of the color-changing product, wherein the film layer uniformity is as follows: [ (large reflectance value-small reflectance value)/large reflectance ] × 100%;
3. abrasion resistance, the color-changing article is placed on a haze meter to test the initial haze value H of the sample without abrasion0The lens is placed at mark 1 and the first measurement is taken, followed by measurements at the other three marks in turn for each 90 ° rotation. The arithmetic mean of the 4 measurements was taken. Then the color-changing product is placed on a friction instrument with the convex surface upward, and the center of the color-changing product is coincided with the center of the swing rod and is fixed. Adding a load weight on a weight beam at the upper end of a friction meter pressing die, wherein the total load is 800g, applying the load weight on a convex surface of a sample, setting the value of a counter for 1000 times, starting the friction meter, and performing reciprocating friction for 1000 times. And placing the rubbed color-changing product on a haze meter again, and testing the haze value after the rubbing. The tribology calculation formula was tested using QBT 2702-. All test results are reported in table 1.
TABLE 1 characterization data
| Examples | Optical transmittance | Optical homogeneity | Wear resistance |
| Example 1 | 90％ | 0.35％ | 0.54％ |
| Example 2 | 90％ | 0.34％ | 0.51％ |
| Example 3 | 91％ | 0.31％ | 0.49％ |
| Example 4 | 92％ | 0.27％ | 0.36％ |
| Example 5 | 94％ | 0.21％ | 0.29％ |
| Example 6 | 94％ | 0.12％ | 0.21％ |
| Example 7 | 96％ | 0.08％ | 0.12％ |
| Example 8 | 98％ | 0.01％ | 0.11％ |
| Example 9 | 100％ | 0.02％ | 0.09％ |
| Example 10 | 100％ | 0.04％ | 0.05％ |
| Example 11 | 100％ | 0.05％ | 0.01％ |
The data show that the color-changing material of the invention has very good optical transmission performance, optical uniformity performance and wear resistance performance. Particularly, the wear resistance of the present invention is very good, for example, when the samples of examples 9 to 11 of the present invention are placed in an environment of-50 ℃ for one month and then subjected to a wear resistance test, the wear resistance can still reach 0.10%, which indicates that the wear resistance of the present invention is very good, and at the same time, the wear resistance at low temperature is also very good. In addition, the spectacle lens prepared by the color-changing material has good heat resistance, does not deform and has clear vision, thereby providing the beneficial technical effects of the invention.
The foregoing examples are illustrative only, and serve to explain some of the features of the present disclosure. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. And that advances in science and technology will result in possible equivalents or sub-substitutes not currently contemplated for reasons of inaccuracy in language representation, and such changes should also be construed where possible to be covered by the appended claims.
Claims (8)
1. The color-changing layer material is characterized by comprising the following components in sequence from inside to outside:
a CR39 layer;
a color-changing layer; and
a CR39 layer;
the color-changing layer comprises a photochromic compound and cellulose triacetate; the photochromic compound and the cellulose triacetate in the color-changing layer are in a weight ratio of (1-20): 100, respectively;
the CR39 layer is obtained by polymerizing a CR39 monomer and a monomer containing double bonds; the monomer containing double bonds is selected from: mixing butylene, tert-butyl methacrylate and 1, 4-butanediol dimethacrylate, wherein the weight ratio of butylene to tert-butyl methacrylate to 1, 4-butanediol dimethacrylate is as follows: 1: 10: (1-5); the weight ratio of the CR39 monomer to the monomer containing the double bond is as follows: 100: (1-5);
the CR39 monomer is CR39 type core-shell particles, the CR39 type core-shell particles are CR39 type core-shell particles obtained by taking silane coupling agent modified silicon dioxide as a core and CR39 monomer as a shell;
the cellulose triacetate also comprises 0.1 weight part of chitosan-cyclodextrin modified cellulose triacetate.
2. The color-changing layer material of claim 1 wherein said cellulose triacetate further comprises cellulose acetate butyrate.
3. The color-changing layer material according to claim 2, wherein the weight ratio of cellulose triacetate to cellulose acetate butyrate is 100: (1-30).
4. The color-changing layer material of claim 3, wherein the weight ratio of cellulose triacetate to cellulose acetate butyrate is 20: 1.
5. the preparation method of the color-changing layer material according to claims 1 to 4, characterized by at least comprising the following steps:
providing a color changing layer;
providing a CR39 monomer;
the upper and lower surfaces of the color shifting layer are cross-linked with CR39 monomer.
6. The preparation method of the material of the color-changing layer according to claim 5, wherein the mass ratio of the CR39 monomer to the color-changing layer is 10: (1-30).
7. An ophthalmic lens article comprising the color-changing layer material of claims 1-4.
8. The use of the color-changing layer material according to claims 1 to 4 in the fields of spectacle lenses and optical communication.
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| PCT/CN2018/073931 WO2018188401A1 (en) | 2017-04-14 | 2018-01-24 | Chromatic layer material, product, and manufacturing method therefor |
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| CN109648956B (en) * | 2018-12-29 | 2021-03-05 | 温州富奇士光电材料有限公司 | Photochromic material and preparation method and application thereof |
| CN110815721A (en) * | 2019-11-14 | 2020-02-21 | 镇江视伟光学有限公司 | Manufacturing method of lens for improving Abbe number |
| CN111116956B (en) * | 2019-12-26 | 2022-11-15 | 乐凯光电材料有限公司 | TAC functional film and preparation method thereof |
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