CN110407481A - A kind of preparation method of multi-functional photochromic film - Google Patents
A kind of preparation method of multi-functional photochromic film Download PDFInfo
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- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
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- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/15—Deposition methods from the vapour phase
- C03C2218/151—Deposition methods from the vapour phase by vacuum evaporation
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Abstract
The invention belongs to optical technical field, specially a kind of preparation method of multi-functional photochromic film.Method proposed by the present invention is successively vacuum evaporation 8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene, 2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, (R)-[{ [1- (6- amino -9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid, N- (the chloro- 2- tolyl of 5-) adamantane amide on a glass, obtain multi-functional photochromic film, the light transmittance of the film is 88 ~ 92%, and mist degree is 90 ~ 94%；The ultraviolet light that the ultraviolet light and wavelength for being 365nm with white light, wavelength are 254nm irradiates multi-functional photochromic film 60 seconds respectively, and the color of illumination rear film is respectively red, yellow and blue.
Description
Technical field
The invention belongs to optical technical field, specially a kind of preparation method of multi-functional photochromic film.
Background technique
It is photochromic to refer to that certain compounds molecular structure under the light action of certain wavelength and intensity become
Change, so as to cause its corresponding change of absorption peak, that is, color to light, and this change is generally reversible.Organic system
It is photochromic to also tend to occur simultaneously along with many processes related with photochemical reaction, so as to cause certain of molecular structure
Change, reactive mode specifically includes that valence link isomery, cis-trans isomerism, key fracture, polymerization, oxidationreduction, pericyclic reaction
Deng.The important functional material in the fields such as organic light-scattering material has become illumination, optics is shown, Lighting Design, can both solve liquid
The intrinsic visual angle asymmetry problem of crystal display, moreover it is possible to make illumination reach high effect with display system and mutually unite with visual uniformity
One purpose, the illumination combined for efficient, low damage, high uniformity with perfect vision and display equipment provide guarantee.
Currently, photochromic material and light-scattering film material are more common, but have the film material of both the above characteristic concurrently
Expect very rare.
Guo Haomo etc. is prepared for rhodamine beta-hydroxy naphthaldehyde hydrazone using rhodamine B hydrazides and 2- hydroxyl-1-naphthalene Formaldehyde as raw material
(L), structure passes through1HNMR,13CNMR and mass spectral characteristi.Compound L and Zn2+Form the L- Zn that coordination ratio is 1: 12+Complex compound.
Target compound L and Zn are had studied using ultraviolet spectra2+Photochromic characteristic in ethanol solution.The result shows that L- Zn2+
Complex compound 500nm or more is in substantially faint yellow without absorption, but under UV-365nm irradiation, complex compound can be fast in ethanol solution
Speed is changed into red, and strong absorption is generated at 557nm, and after stopping irradiation, solution can be changed into faint yellow again, and has
Good fatigue resistance (Leshan Teachers College's journal, the 4th phase 34-38 in 2019).
2,3- dihydroxy -5- nitrobenzaldehyde is being made using 2- hydroxy 3-methoxybenzene formaldehyde as raw material in Bao Lihong etc.
On the basis of, it is reacted with 2,3,3- trimethyl-N-hydroxyethyl -3H indoles bromide, has synthesized double hydroxyl spiropyran compounds.
Have studied the photochromic properties of obtained compound.As a result, it has been found that double hydroxyl spiro-pyrans ethanol solutions of 0.02g/L, maximum is inhaled
Wavelength is received in 559nm, is extended with the ultraviolet lighting time, the absorbance of solution gradually increases, and light application time is more than variation after 480s
It is unobvious;After removing ultraviolet lamp, under daylight light irradiation, double hydroxyl spiro-pyrans ethanol solution colors are gradually recovered, more than 600s
Solution colour almost becomes primary colors again afterwards;Under condition of different pH, double hydroxyl spiro-pyrans ethanol solutions after 365nm ultraviolet light,
Show different colors (New Chemical Materials, the 5th phase 137-139 in 2018,143).
Fu Liuwa etc. chooses lauryl sodium sulfate (SDS), and octyl phenyl polyoxyethylene ether (OP-10) is composite emulsifying
Agent, potassium peroxydisulfate (KPS) is initiator, by 2-(perfluoro hexyl) ethylmethyl acrylate (PFM) and acrylic ester monomer
Emulsion copolymerization is carried out using pre-emulsification-semi-continuous seed emulsion polymerization method, then hydroxyl spiro-pyrans (SPOH) and lotion are subjected to object
Reason is blended, and photochromic fluorinated acrylate emulsion is made.By a variety of characterization methods research n-butyl acrylate (n-BA) and
The mass ratio of methyl methacrylate (MMA) soft or hard monomer, influence of the dosage of SPOH to polymerization reaction and latex film properties.Knot
Fruit shows that the contact angle of latex film and water, oil improves after fluorochemical monomer is added, and thermal stability improves;The quality point of SPOH is added
When number is 1. 25%, latex film has preferable photochromic properties (applied chemistry, the 12nd phase 1434-1441 in 2018).
The polysiloxanes microballoon that partial size is 2-9 μm is dispersed in acrylic resin by Lu Xin etc. as light scattering agent,
It is coated on polyethylene terephthalate (PET) film surface with a thickness of 180 μm, light-scattering film is made in solvent flashing.
The thickness of the concentration of polysiloxanes microballoon, partial size and coating has been investigated to optical properties such as the light transmittance of light-scattering film and mist degrees
Influence.The result shows that: it is thin that light scattering can be significantly increased in the case where keeping higher light transmittance in polysiloxanes microballoon
The mist degree of film.When the addition mass percent for the polysiloxanes microballoon that partial size is 5 μm is 25%, coating layer thickness is 90 μm, light dissipates
The light transmittance for penetrating film is 88%, and mist degree 90%, effective light scattering coefficient has optimal light scattering property East China up to 79%
Polytechnics's journal: natural science edition, the 5th phase 699-703 in 2008).
In conclusion organic material can be used for constructing the optical thin film of multiple functions, including photochromic, light-scattering film
Deng.The film of simple function has been studied relatively comprehensively, but multi-functional compound thin film development is still in the stage of fumbling, needs
Constantly accumulation knowledge and experience.The common recognition of those skilled in the art is the multistable discoloration of multi-functional photochromic film,
And light scattering property, it is not only related to the composition of film, the structure of film is additionally depended on, needs to cooperate with the group of optimization film
Point and structure, to obtain multi-functional organic optical film.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of multi-functional photochromic film.
The preparation method of multi-functional photochromic film proposed by the present invention, the specific steps are as follows:
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene, the 25 ~ 40nm that 25 ~ 40nm thickness is successively deposited on plate are thick
2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 25 ~ 40nm thickness (R)-[{ [(6- amino -9H- is fast by 1-
Purine -9- base) propyl -1- base] oxygroup methyl] phosphoric acid, 25 ~ 40nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, much
Function photochromic film.
Reference literature (polymer material science and engineering, the 2nd phase 54-57 in 2010), with light transmittance/mist degree analyzer,
The light transmittance for measuring multi-functional photochromic film is 88 ~ 92%, and mist degree is 90 ~ 94%.
The ultraviolet light that the ultraviolet light and wavelength for being 365nm with white light, wavelength are 254nm irradiates above-mentioned multifunctional light respectively
Cause optically variable films 60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light be respectively red, yellow and
Blue.
The organic layer of multi-functional photochromic film prepared by the present invention be by four kinds of layer-by-layer vacuum depositions of organic material and
At if only using a kind of organic material prepares organic layer, the present invention provides following 4 technical solutions as a comparison:
(1) 5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 25nm thickness is deposited in glass plate, obtains organic film；With
Light transmittance/mist degree analyzer, the light transmittance for measuring organic film is 91%, mist degree 6%.It is the ultraviolet of 365nm with white light, wavelength
The ultraviolet light that light and wavelength are 254nm irradiates above-mentioned organic film 60 seconds respectively, organic thin after being shone with colour photometer detection light
The color of film is respectively red, red and red.
It can be seen that the mist degree of 8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene film is lower,
Light scattering property is poor, does not also have multistable photochromic effect.
(2) 5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa,
2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides of 40nm thickness is deposited on a glass, obtains organic film；With saturating
Light rate/mist degree analyzer, the light transmittance for measuring organic film is 89%, mist degree 7%.The ultraviolet light for being 365nm with white light, wavelength
And the ultraviolet light that wavelength is 254nm irradiates above-mentioned organic film 60 seconds respectively, the organic film after being shone with colour photometer detection light
Color be respectively khaki, khaki and khaki.
It can be seen that the mist degree of 2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides film is lower, light scattering
Performance is poor, does not also have multistable photochromic effect.
(3) 5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa,
(R)-[{ [1- (6- amino -9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid of 30nm thickness is deposited on a glass,
Obtain organic film；With light transmittance/mist degree analyzer, the light transmittance for measuring organic film is 95%, mist degree 4%.With white light, wavelength
The ultraviolet light that ultraviolet light and wavelength for 365nm are 254nm irradiates above-mentioned organic film 60 seconds respectively, with colour photometer detection light
The color of organic film according to after is respectively ecru, ecru and ecru.
It can be seen that (R)-[{ [1- (6- amino -9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid membranes
Mist degree is lower, and light scattering property is poor, does not also have multistable photochromic effect.
(4) 5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa,
N- (the chloro- 2- tolyl of 5-) adamantane amide of 35nm thickness is deposited on a glass, obtains organic film；It is surveyed with light transmittance/mist degree
Determine instrument, the light transmittance for measuring organic film is 93%, mist degree 5%.The ultraviolet light and wavelength for being 365nm with white light, wavelength be
The ultraviolet light of 254nm irradiates above-mentioned organic film 60 seconds respectively, and the color of the organic film after being shone with colour photometer detection light is distinguished
It is pink, pink and pink.
It can be seen that the mist degree of N- (the chloro- 2- tolyl of 5-) adamantane amide film is lower, light scattering property is poor, also not
With multistable photochromic effect.
Four kinds of organic matters it can be seen from correlation technique scheme (1) ~ (4): 8- amino -4- oxo -2- (1H-TETRAZOLE -5-
Base) -4H-1- chromene, 2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, (R)-[{ [1- (6- amino -
9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid, N- (the chloro- 2- tolyl of 5-) adamantane amide, it cannot be independent
As light-scattering film material or multistable photochromic material.
If four kinds of organic matters in the organic layer of the multi-functional photochromic film in the present invention lack one kind, the present invention
Also provide following 4 technical solutions as a comparison:
(5) lack 8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene in organic layer
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides of 25nm thickness, (R)-[{ [1- of 40nm thickness are successively deposited on plate
(6- amino -9H- purine -9- base) propyl -1- base] oxygroup methyl] phosphoric acid, 40nm thickness N- (the chloro- 2- tolyl of 5-) adamantane
Amide obtains compound organic film.
With light transmittance/mist degree analyzer, the light transmittance for measuring compound organic film is 91%, mist degree 23%.With white light, wave
The ultraviolet light and wavelength of a length of 365nm is that the ultraviolet light of 254nm irradiates above-mentioned multi-functional photochromic film 60 seconds respectively, is used
The color of compound organic film after colour photometer detection light photograph is respectively grass green, grass green and grass green.
It can be seen that the mist degree of compound organic film is promoted than single layer organic film, but can not show a candle to multi-functional photic
Optically variable films, moreover, compound organic film do not have multistable photochromic effect.
(6) lack 2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides in organic layer
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 30nm thickness, (R)-of 30nm thickness are successively deposited on plate
The N- (the chloro- 2- tolyl of 5-) of [{ [1- (6- amino -9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid, 40nm thickness
Adamantane amide obtains compound organic film.
With light transmittance/mist degree analyzer, the light transmittance for measuring compound organic film is 90%, mist degree 21%.With white light, wave
The ultraviolet light and wavelength of a length of 365nm is that the ultraviolet light of 254nm irradiates above-mentioned multi-functional photochromic film 60 seconds respectively, is used
The color of compound organic film after colour photometer detection light photograph is respectively light blue, light blue and light blue.
It can be seen that the mist degree of compound organic film is promoted than single layer organic film, but can not show a candle to multi-functional photic
Optically variable films, moreover, compound organic film do not have multistable photochromic effect.
(7) lack (R)-[{ [1- (6- amino -9H- purine -9- base) propyl -1- base] oxygroup } methyl] phosphoric acid in organic layer
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 25nm thickness, the 2- of 40nm thickness are successively deposited on plate
N- (the chloro- 2- tolyl of 5-) adamantane amide of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 40nm thickness, obtains
Compound organic film.
With light transmittance/mist degree analyzer, the light transmittance for measuring compound organic film is 88%, mist degree 26%.With white light, wave
The ultraviolet light and wavelength of a length of 365nm is that the ultraviolet light of 254nm irradiates above-mentioned multi-functional photochromic film 60 seconds respectively, is used
The color of compound organic film after colour photometer detection light photograph is respectively orange, orange and orange.
It can be seen that the mist degree of compound organic film is promoted than single layer organic film, but can not show a candle to multi-functional photic
Optically variable films, moreover, compound organic film do not have multistable photochromic effect.
(8) lack N- (the chloro- 2- tolyl of 5-) adamantane amide in organic layer
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 35nm thickness, the 2- of 25nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 40nm thickness
Propyl -1- base] oxygroup } methyl] phosphoric acid, obtain compound organic film.
With light transmittance/mist degree analyzer, the light transmittance for measuring compound organic film is 89%, mist degree 25%.With white light, wave
The ultraviolet light and wavelength of a length of 365nm is that the ultraviolet light of 254nm irradiates above-mentioned multi-functional photochromic film 60 seconds respectively, is used
The color of compound organic film after colour photometer detection light photograph is respectively orange red, orange red and orange red.
It can be seen that the mist degree of compound organic film is promoted than single layer organic film, but can not show a candle to multi-functional photic
Optically variable films, moreover, compound organic film do not have multistable photochromic effect.
By above-mentioned correlation technique scheme (5) ~ (8) once it can be seen from a certain component missing in organic layer, then what is prepared answers
It is poor to close organic film light scattering property, and does not have multistable photochromic effect.
In conclusion the beneficial effects of the present invention are: it has used 4 kinds of light scattering properties poor, and itself has not had photic
The organic material of color changeable effect has obtained the multistable light with high transparency and mist degree by optimization film composition and structure
Cause optically variable films；Moreover, compound if lacking a certain material for not having photochromic properties itself in organic layer
The mist degree decline of organic film, photochromic effect disappear.
Therefore, the technical solution of the claims in the present invention has marked improvement outstanding, produces unexpected technology
Effect, the creativeness with patent statute.
Specific embodiment
The present invention is further described below by example.
Embodiment 1
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 25nm thickness, the 2- of 25nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 25nm thickness
Propyl -1- base] oxygroup methyl] phosphoric acid, 25nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional photochromic
Film.
With light transmittance/mist degree analyzer, the light transmittance for measuring multi-functional photochromic film is 92%, mist degree 90%.With
The ultraviolet light that the ultraviolet light and wavelength that white light, wavelength are 365nm are 254nm irradiates above-mentioned multi-functional photochromic film respectively
60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light was respectively red, yellow and blue.
Embodiment 2
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 40nm thickness, the 2- of 40nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 40nm thickness
Propyl -1- base] oxygroup methyl] phosphoric acid, 40nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional photochromic
Film.
With light transmittance/mist degree analyzer, the light transmittance for measuring multi-functional photochromic film is 88%, mist degree 94%.With
The ultraviolet light that the ultraviolet light and wavelength that white light, wavelength are 365nm are 254nm irradiates above-mentioned multi-functional photochromic film respectively
60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light was respectively red, yellow and blue.
Embodiment 3
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 30nm thickness, the 2- of 35nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 30nm thickness
Propyl -1- base] oxygroup methyl] phosphoric acid, 40nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional photochromic
Film.
With light transmittance/mist degree analyzer, the light transmittance for measuring multi-functional photochromic film is 89%, mist degree 91%.With
The ultraviolet light that the ultraviolet light and wavelength that white light, wavelength are 365nm are 254nm irradiates above-mentioned multi-functional photochromic film respectively
60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light was respectively red, yellow and blue.
Embodiment 4
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 40nm thickness, the 2- of 25nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 25nm thickness
Propyl -1- base] oxygroup methyl] phosphoric acid, 25nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional photochromic
Film.
With light transmittance/mist degree analyzer, the light transmittance for measuring multi-functional photochromic film is 91%, mist degree 93%.With
The ultraviolet light that the ultraviolet light and wavelength that white light, wavelength are 365nm are 254nm irradiates above-mentioned multi-functional photochromic film respectively
60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light was respectively red, yellow and blue.
Embodiment 5
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass
8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 37nm thickness, the 2- of 38nm thickness are successively deposited on plate
(R)-[{ [1- (6- amino -9H- purine -9- base) of (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 29nm thickness
Propyl -1- base] oxygroup methyl] phosphoric acid, 26nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional photochromic
Film.
With light transmittance/mist degree analyzer, the light transmittance for measuring multi-functional photochromic film is 89%, mist degree 94%.With
The ultraviolet light that the ultraviolet light and wavelength that white light, wavelength are 365nm are 254nm irradiates above-mentioned multi-functional photochromic film respectively
60 seconds, the color of the multi-functional photochromic film after being shone with colour photometer detection light was respectively red, yellow and blue.
Claims (1)
1. a kind of preparation method of multi-functional photochromic film, which is characterized in that specific step is as follows:
5cm × 5cm × 0.5mm glass plate is placed in vacuum coating equipment, is 2 × 10 in vacuum degree-3Under Pa, in glass plate
On that 8- amino -4- oxo -2- (1H-TETRAZOLE -5- base) -4H-1- chromene of 25 ~ 40nm thickness, 25 ~ 40nm is successively deposited is thick
(R)-[{ [1- (6- amino -9H- purine-of 2- (the chloro- 3- sulfanilamide (SN) phenyl of 4-)-N- methylhydrazide thioamides, 25 ~ 40nm thickness
9- yl) propyl -1- base] oxygroup methyl] phosphoric acid, 25 ~ 40nm thickness N- (the chloro- 2- tolyl of 5-) adamantane amide, obtain multi-functional
Photochromic film；
Wherein the performance of multi-functional photochromic film is that light transmittance is 88 ~ 92%, and mist degree is 90 ~ 94%；It is with white light, wavelength
The ultraviolet light and wavelength of 365nm is that the ultraviolet light of 254nm irradiates multi-functional photochromic film 60 seconds respectively, more function after illumination
The color of energy photochromic film is respectively red, yellow and blue.
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