CN105949384A - Preparation method and application of thermochromic optical material - Google Patents
Preparation method and application of thermochromic optical material Download PDFInfo
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- CN105949384A CN105949384A CN201610329844.XA CN201610329844A CN105949384A CN 105949384 A CN105949384 A CN 105949384A CN 201610329844 A CN201610329844 A CN 201610329844A CN 105949384 A CN105949384 A CN 105949384A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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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
- G02F1/009—Thermal properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/282—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing two or more oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Abstract
The invention provides a preparation method and application of a thermochromic optical material. The preparation method includes: using an emulsion polymerization method to prepare nano microspheres of a core-shell structure, wherein each nano microsphere comprises a core and a shell, and shell materials comprise viscoelastic body materials; using a coating method to coat a substrate with the nano microspheres to obtain a composite-material optical thin film, namely the thermochromic optical material. The thermochromic optical material has the advantages that thermo-sensitive monomers are added to change the chemical components of the shells of the nano microspheres, so that the thermochromic optical material can respond to any critical temperature in the range of 0-90 DEG C, the refractive index of the shell materials changes greatly at the critical temperature, and the color of the whole thermochromic optical material can be changed; the thermochromic optical material is excellent in thermochromic performance and widely applicable to fields such as decoration, product packaging, anti-counterfeiting, sensor indicators, energy-saving solar films and photo-protection.
Description
Technical field
The present invention relates to technical field of material, be specifically related to the preparation method of a kind of temperature sensing color changing optical material and answer
With.
Background technology
Temperature sensing color changing material has reversible irreversible two kinds from reversible irreversibly division at present, and dividing from metachromatic principle has
Chemical reaction variable color and phase transformation variable color two kinds.Chemical principle temperature sensing color changing material mainly includes the iodide of heavy metal, network
Volution class in compound and organic material, dianthracene ketone, Synthesis of diaminodiphenyl etc., these materials are by temperature sensitive
Selfoxidation-reduction reaction complete electron transfer change self color.The material of phase transformation class mainly includes the oxide of vanadium metal
And liquid crystal etc., realized the change that can carry by the change of crystal structure, and then change optical characteristics.Reaction class materials synthesis work
The simple low cost of skill, but use temperature range narrow, to pollute big, color change is the most notable；The feature of phase transformation class material is to temperature
Spending highly sensitive, but color gamut is narrow, color changeable effect is unstable, sensitive to chemical substance.
Photonic crystal is a kind of novel optical material.It is different from electron transfer chemical optics material and phase-change type optical material
Material, the optical characteristics of photonic crystal is by the internal nanostructure selective reflecting to light, the most complete and incomplete photon
Forbidden band realizes.The opal stone of nature is receiving of a kind of natural photon crystal material, silicon dioxide or other inorganics
Meter Wei Qiu becomes solid matter or other structures of rule by complicated long-term geologic process in opal stone internal arrangement, so that natural
Opal stone has magnificent color representation to be treasured by people.Inspired by natural opal stone structure, from the eighties in last century
Since people synthesized various different artificial photonic crystal, wherein polymer opal stone luminescent crystal material is exactly the most special
One class.
Know-why used by polymer opal stone photon crystal material is that the polymer nano-microspheres by nucleocapsid structure exists
Three dimensions dense accumulation permutation and combination forms the mixed of certain regular lattice structure, disordered structure or rule and irregular structure
Close and incident ray is reflected specific wave band and angle selectively through Bragg diffraction principle.Polymer photon crystal
Producing the technical difficulty that relates to of preparation higher, polymer photon crystal has a potential quality to temperature respective change, however at present this
The research of aspect seldom relates to.Polymer photon crystal is because material is all polymer, and the refractive index of most polymers
The change caused with temperature difference be not it is obvious that the most temperature sensitive polymer photon crystal to prepare difficulty higher.
The patent of invention of Application No. CN201310135432.9 discloses a kind of temperature sensing color changing insulating moulding coating, by following heavy
Amount the pulping agents of slurrying solvent, 1%～12% of color stuffing, 2%～10% of percentage composition 32%～52%, 30%～
The paint auxiliary agent of temperature-sensitive reversible color material, 1%～11.5% of filming emulsion, 1%～8% of 50% and 0%～10%
Paint solvent make, reach temperature sensing color changing, high temperature reflective insulation, low temperature heat absorption purpose, have good energy-saving effect with
Decorative effect, but the technical scheme of this invention is not directed to Nano microsphere, and its colour change function does not the most possess 0-90 DEG C of scope
The response of interior arbitrary critical temperature.
Summary of the invention
In order to overcome above problems of the prior art, the present invention discloses the preparation of a kind of temperature sensing color changing optical material
Method and application, prepare the Nano microsphere with nucleocapsid structure with emulsion polymerization, and the Nano microsphere of nucleocapsid structure includes core
Layer and shell, Shell Materials comprises viscoelastic body；With rubbing method the Nano microsphere of preparation is coated in substrate be processed into multiple
Condensation material optical thin film, is temperature sensing color changing optical material.By the change to Nano microsphere shell chemical composition, as added one
Determine the heat sensitization monomer of mass fraction, it is achieved that temperature sensing color changing optical material is to the sound of arbitrary critical temperature in the range of 0-90 DEG C
Should, in critical temperature, the refractive index of Shell Materials can occur large change, causes the change of integral color, and the present invention's is temperature sensitive
Color-change optical material, on the basis of retaining the excellent changeable colors along with angle of raw material, the strain function such as variable color, color change with voltage, adds
The corresponding color shifting properties of excellent temperature, in furnishing fields, field of product packaging, anti-counterfeit field and sensor indicator, energy-conservation
The aspect such as solar film, photoprotection has relatively broad application prospect.
The core microsphere material of the Nano microsphere of nucleocapsid structure generally but is not limited only to polystyrene, silicon dioxide etc. and has
Machine or inorganic material, the shell of Nano microsphere generally but is not limited only to the elastomers such as polyethyl acrylate or viscoelastic body polymer
Material.Nano microsphere typically have a size of 100-1000 nanometer, the size dispersity of same Nano microsphere is generally below 5%.
Nano microsphere is by emulsion polymerization preparation, and dried Nano microsphere forms thickness after adding organic solvent or specific monomer to be had
The mixture of certain fluidity, is coated on basement membrane, forms elastic film by UV photocuring, then through roll-in and subsequent technique
Improve optical property.Prepared optical material causes color to be continually changing in different angles due to internal nanostructure characteristic,
Strain can be occurred under outer signals stimulates to cause nanostructured lattice variations simultaneously thus the change of reflecting light section occurs, enter
And cause the change of material appearance color.
The present invention provides the preparation method of a kind of temperature sensing color changing optical material, including preparing Nano microsphere, including:
Step (1): prepare the Nano microsphere with nucleocapsid structure with emulsion polymerization, the Nano microsphere of nucleocapsid structure includes
Core and shell, Shell Materials comprises polymer viscoelastic body；
Step (2): with rubbing method the Nano microsphere of preparation is coated in substrate and is processed into composite optical thin film, i.e.
For temperature sensing color changing optical material.
Preferably, described core accounts for the weight percentage of described nuclear shell structure nano microsphere is 30-55%.
Preferably, described shell accounts for the weight percentage of described nuclear shell structure nano microsphere and is any of the above-described scheme
30%-60%.
Any of the above-described scheme preferably, is attached by intermediate layer between described shell and core, and intermediate layer accounts for described
The weight percentage of nuclear shell structure nano microsphere is 5-20%.
Preferably, core includes core material and cross-linking agent to any of the above-described scheme.
Preferably, core material layer includes polystyrene, silicon dioxide, poly-methyl methacrylate to any of the above-described scheme
At least one in ester, ferroso-ferric oxide, phenylethylamine, tin indium oxide, arsenic trioxide.When core layer uses polystyrene,
In order to increase hardness, therefore can add cross-linking agent, if being added without cross-linking agent, then polystyrene more softness is to deform
's.Generally be harder polystyrene.
Any of the above-described scheme preferably, described Shell Materials include polyethyl acrylate, polydimethylsiloxane, poly-third
In olefin(e) acid second two fat, polymethyl methacrylate, polyurethane, polystyrene, heat sensitization monomer, acrylic compounds and rubber
One or more.
Preferably, core includes polystyrene and cross-linking agent to any of the above-described scheme, and intermediate layer includes polyethyl acrylate
And polyallylmethacrylate, shell includes polyethyl acrylate and heat sensitization monomer.Polyallylmethacrylate is by first
Obtain after the polymerization of base allyl acrylate monomer.Polyethyl acrylate obtains after being polymerized by acrylic acid ethyl ester monomer.
Preferably, cross-linking agent accounts for the 1%-20% of core weight to any of the above-described scheme.
Preferably, cross-linking agent accounts for the 10% of core weight to any of the above-described scheme.
Preferably, heat sensitization monomer accounts for the 1%-85% of shell weight to any of the above-described scheme.
Preferably, heat sensitization monomer accounts for the 30-60% of shell weight to any of the above-described scheme.
Any of the above-described scheme preferably, the polystyrene of core layer and cross-linking agent: the polyethyl acrylate in intermediate layer and
Polyallylmethacrylate: the polyethyl acrylate of shell and the weight ratio=32.5:11.2:56.3 of heat sensitization monomer.
Preferably, the polystyrene of core and cross-linking agent account for nuclear shell structure nano microspheres quality to any of the above-described scheme
20-45%.
Preferably, the polyethyl acrylate in intermediate layer and polyallylmethacrylate account for nucleocapsid knot to any of the above-described scheme
The 5-20% of structure Nano microsphere quality.
Preferably, polyethyl acrylate and the heat sensitization monomer of shell account for nuclear shell structure nano microsphere to any of the above-described scheme
The 30-60% of quality.
Preferably, cross-linking agent is 1,3 butylene glycol diacrylate (BDDA) or divinylbenzene to any of the above-described scheme
(DVB)。
Any of the above-described scheme preferably, described heat sensitization monomer be oligosaccharide glycol propylene acid methyl ester (ethylene glycol
Unit changes between 2 and 9), NIPA, dimethylaminoethyl methacrylate or N, N-dimethyl allene
At least one in amide.
Any of the above-described scheme preferably, prepares the Nano microsphere with nucleocapsid structure, concrete grammar with emulsion polymerization
Comprise the following steps:
Step (a): the preparation of core layer: the preparation of core layer: core material, cross-linking agent, main initiator and auxiliary are drawn
Send out agent, to react 30 minutes to 7-8 at 60-90 DEG C of mixing, regulation pH value；
Step (b): the preparation in intermediate layer: again buffer layer material is added with the speed of dripping of 7-21ml/min, and add emulsifying
Agent, reacts 20 minutes；
Step (c): the preparation of shell: Shell Materials and heat sensitization monomer are added with the speed of dripping of 8-27ml/min, and adds
Enter adjustable refractive index material, react 1 hour, breakdown of emulsion, dried Nano microsphere.
Preferably, described main initiator is sodium peroxydisulfate (Na to any of the above-described scheme2S2O8)。
Preferably, described co initiator is sodium pyrosulfite (Na to any of the above-described scheme2S2O5)。
Preferably, described emulsifying agent is disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate salt (Dowfax2A1) to any of the above-described scheme.
Preferably, described adjustable refractive index material is TFMA to any of the above-described scheme.
Preferably, the Nano microsphere of preparation is coated in substrate any of the above-described scheme by described step (2) with rubbing method
Being processed into composite optical thin film, concrete preparation method includes:
Step (a): it is stable that Nano microsphere step 1 synthesized forms thickness after adding organic solvent or specific monomer
Mixture, applies mixture on basement membrane, and basement membrane is coated with protecting film；
Step (b): put in UV solidification case, take out after solidification；
Step (c): extruded by the basement membrane microstress roller of taking-up and make its upper and lower surface smooth, is then passed through concussion and shears and get final product
To composite optical thin film.
Preferably, organic solvent or specific monomer include BDDA, ethanol or oligosaccharide ethylene glycol third to any of the above-described scheme
E pioic acid methyl ester.
Preferably, in described step (a), basement membrane is PET basement membrane to any of the above-described scheme.
Preferably, in described step (b), in UV solidification case, hardening time is three minutes to any of the above-described scheme, ultraviolet wavelength
Scope is 200-350nm.
Invention additionally discloses a kind of temperature sensing color changing optical material using said method to prepare in base camp tent, architectural appearance
Or built-in, packaging material, electronic equipment appearance material, automobile appearance material, dress material, sporting goods material, building decoration
Application in terms of material, currency security strip material, brand material, pattern anti-fake material.
The present invention provides the preparation method and application of a kind of temperature sensing color changing optical material, prepares with emulsion polymerization and has core
The Nano microsphere of shell structure, the Nano microsphere of nucleocapsid structure includes core and shell, and Shell Materials comprises viscoelastic body；With painting
The Nano microsphere of preparation is coated in substrate and is processed into composite optical thin film by cloth method, is temperature sensing color changing optical material.
Nano microsphere shell chemical composition is changed, such as oligosaccharide glycol propylene acid methyl ester (oligo by adding heat sensitization monomer
(ethylene glycol) methacrylate), H2C=C (CH3) CO (OCH2CH2)nO(CH3), and by adjusting ethylene glycol
Number in oligosaccharide glycol propylene acid methyl ester (oligo (ethylene glycol) methacrylate), it is achieved that
Temperature sensing color changing optical material is to the response of arbitrary critical temperature in the range of 0-90 DEG C, in critical temperature, the refractive index of Shell Materials
Large change can occur, thus cause the change of integral color, the temperature sensing color changing optical material of the present invention is excellent at reservation raw material
On the basis of good changeable colors along with angle, the strain function such as variable color, color change with voltage, add the corresponding color shifting properties of excellent temperature,
The aspect such as furnishing fields, field of product packaging, anti-counterfeit field and sensor indicator, energy-conservation solar film, photoprotection has more
It is widely applied prospect.
Accompanying drawing explanation
The coating of Fig. 1, material is light-cured into membrane process；
Composite optical thin film prepared by Fig. 2, nuclear shell structure nano microsphere；
Composite optical thin film prepared by Fig. 3, nuclear shell structure nano microsphere is with angle variable color schematic diagram；
Composite optical thin film prepared by Fig. 4, nuclear shell structure nano microsphere changes direct reflection spectrum example with color；
Composite optical thin film prepared by Fig. 5, the nuclear shell structure nano microsphere application on military camouflage tent；
Composite optical thin film prepared by Fig. 6, the nuclear shell structure nano microsphere application in architectural appearance；
Composite optical thin film prepared by Fig. 7, nuclear shell structure nano microsphere is in the interior application loaded onto；
Fig. 8 is the use schematic diagram of composite optical thin film prepared by nuclear shell structure nano microsphere；
Fig. 9 is 7.1 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 10 is 7.2 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 11 is 7.2 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 12 is 7.3 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 13 is 7.4 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 14 is 7.5 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 15 is 7.5 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 16 is 7.6 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 17 is 7.6 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
Figure 18 is 7.6 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere；
7.7 application examples of composite optical thin film prepared by Figure 19 nuclear shell structure nano microsphere；
Figure 20 is 7.8 application examples of composite optical thin film prepared by nuclear shell structure nano microsphere.
Detailed description of the invention
In order to be best understood from technical scheme and advantage, below by way of detailed description of the invention, and combine accompanying drawing pair
The present invention is described further.
The present invention provides the preparation method of a kind of temperature sensing color changing optical material to include:
Step (1): prepare the Nano microsphere with nucleocapsid structure with emulsion polymerization, the Nano microsphere of nucleocapsid structure includes
Core, intermediate layer and shell, containing heat sensitization monomer in Shell Materials, be attached by intermediate layer between shell and core；
Step (2): with rubbing method the Nano microsphere of preparation is coated in substrate and is processed into composite optical thin film.
Core material uses organic or inorganic material, such as polystyrene or silicon dioxide.Shell uses polymer viscoelastic body
Material such as polyethyl acrylate.Core includes polystyrene and cross-linking agent, and intermediate layer includes EA monomer and ALMA monomer.Shell bag
Include EA monomer and heat sensitization monomer.Polystyrene and cross-linking agent: EA monomer and ALMA monomer: EA monomer and heat sensitization monomer are
Good weight ratio is=32.5:11.2:56.3..
Heat sensitization monomer is oligosaccharide glycol propylene acid methyl ester, and the unit of ethylene glycol can change between 2 and 9.Heat
Sensitization monomer can also be NIPA, dimethylaminoethyl methacrylate, N, N-DMAA
In any one.
Step (1): prepare the Nano microsphere with nucleocapsid structure with emulsion polymerization, receives with 320nm sized core-shell structure
As a example by meter Wei Qiu, specifically include following steps:
Step (a): the preparation of core layer: premix 2.6 grams of SDS (as emulsifying agent, make nanometer seed grain be uniformly dispersed),
2800 grams of deionized waters, 36 grams of polystyrene monomers, 4 grams of cross-linking agent enter reactor, and cross-linking agent accounts for the 1%-of core layer weight
20%, it is subsequently adding 0.72 gram of main initiator and 5.18 grams of co initiator, argon shield, is heated to 75 DEG C, core layer
Weight percentage is 30-50%；After 20 minutes with 10ml speed per minute add 2.3 grams of SDS, regulation pH value to 7-8,
2.2 grams of emulsifying agents, 900 grams of deionized waters, 700 grams of polystyrene monomers, 70 grams of cross-linking agent；0.25 gram is added after 30 minutes
Na2S2O8Mixed solution with 5 grams of deionized water compositions；
Step (b): the preparation in intermediate layer, is attached by the intermediate layer that EA is monomer crosslinked between shell and core layer, in
The weight percentage of interbed is to add 0.5 gram of SDS, 2.1 grams of emulsifyings with speed per minute for 14ml after 5-20%:15 minute
Agent, 320g deionized water, 250 grams of EA monomers and 30 grams of ALMA monomer ALMA monomer intermediate layers；
Step (c): the preparation of shell, the weight percentage of shell is per minute with 18ml after 30%-60%:20 minute
Speed add 4 grams of SDS, regulation pH value to 7-8,1600 grams of deionized waters, 250 grams of EA monomers, 750 grams of heat sensitization monomers (heat
Sensitization monomer accounts for the 1%-60% of shell weight), 350 grams of IBMA (Tg regulator), and 100 grams of adjustable refractive index materials.Heat
Sensitization monomer can float at the mass fraction of Shell Materials between 1%-60%.
Wherein, heat sensitization monomer can use oligosaccharide glycol propylene acid methyl ester (oligo (ethylene glycol)
Methacrylate, chemical formula is H2C=C (CH3) CO (OCH2CH2)nO(CH3)) or N-isopropylacrylamide (N-
N-isopropylacrylamide) or N-isopropylmethacrylamide. (N-isopropyl acrylamide) or
Dimethylaminoethylmethacrylate (dimethylaminoethyl methacrylate) or N-, N-
Any one in dimethylacrylamide (N, N-DMAA).
Step (d): completion of dropwise addition carries out breakdown of emulsion filtration and is dried to obtain Nano microsphere agglomerate precursor after 1 hour.To obtain
Nano microsphere agglomerate precursor and the Benzophenon mix and blend of the cross-linking agent of 32% mass fraction and 2% mass fraction
Form thickness stabilized mixture.
The most main initiator is Na2S2O8, co initiator is Na2S2O5, emulsifying agent is Dowfax2A1, and cross-linking agent is
BDDA。
The heat sensitization monomer that the present invention uses is oligosaccharide glycol propylene acid methyl ester, and by adjusting ethylene glycol oligomeric
The number of sugar glycol propylene acid methyl ester (oligo (ethylene glycol) methacrylate) realizes critical temperature
Adjust, i.e. unit changes between 2 and 9, and critical temperature can change between 0 and 90 degree Celsius.The list of ethylene glycol here
Position refers to that this functional group of ethylene glycol is at oligosaccharide glycol propylene acid methyl ester (oligo (ethylene
Glycol) methacrylate) number in chemical formula, adjust critical temperature, oligosaccharide ethylene glycol by adjusting this number
Acrylic acid methyl ester. (oligo (ethylene glycol) methacrylate) concrete structure formula is:
N=2-9 in formula.
As n=2, chemical formula is
As n=4, chemical formula is
As n=6, chemical formula is
Step (2), the concrete preparation of composite optical thin film:
Step (a): on mixture coating basement membrane step 1 synthesized, basement membrane is coated with protecting film；
Step (b): put in UV solidification case, take out after solidification；
Step (c): extruded by the basement membrane microstress roller of taking-up and make its upper and lower surface smooth, is then passed through concussion and shears i.e.
Obtain composite optical thin film.
Embodiment 1
As a example by synthesis 320nm sized core-shell structure nano microsphere, illustrate preparation method
The first step: the preparation of the Nano microsphere of nucleocapsid structure:
Step (a): the preparation of core layer: the first step uses 10 liters of reactors to join agitator, argon shield, is heated to 60 and takes the photograph
Family name's degree, premixes 2.6 grams of SDS (SDS, as emulsifying agent, makes nanometer seed grain be uniformly dispersed), 2800 grams of deionized waters, and 36 grams are gathered
Styrene monomer, 4 grams of BDDA (polystyrene is cross-linked by 1,3 butylene glycol diacrylate, cross-linking agent, increases hardness and intensity)
Enter reactor, reactor mixing speed 250rpm, be subsequently adding 0.72 gram of Na2S2O5(sodium pyrosulfite, co initiator increase
Efficiency of initiation) and 5.18 grams of Na2S2O8(main initiator makes monomer be polymerized)；
Adding 2.3 grams of SDS (dodecyl sodium sulfate) with 10ml speed per minute after 20 minutes, (regulation is anti-for 4 grams of NaOH
The pH value answered, to alkalescence, makes polyreaction be smoothed out), 2.2 grams of Dowfax2A1 (disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate salt,
The preferable emulsifying dispersant of effect), 900 grams of deionized waters, 700 grams of polystyrene monomers, 70 grams of BDDA.Add after 30 minutes
0.25 gram of Na2S2O8The mixing that (this is the initiator added, and makes the polymerization in intermediate layer be smoothed out) forms with 5 grams of deionized waters
Solution；
Step (b): the preparation in intermediate layer: with speed 0.5 gram of SDS of addition per minute for 14ml after 15 minutes, 2.1 grams
250 grams of ethylacrylate (EA) monomer (ethyl acrylate) of Dowfax2A1,320g deionized water and 30 grams of ALMA monomers
(allyl methacrylate)；
Step (c): the preparation of shell: add 2 grams of SDS, 2 grams of KOH with speed per minute for 18ml after 20 minutes and (adjust pH
Value), 1600 grams of deionized waters, 250 grams of EA monomers, 750 grams of oligosaccharide glycol propylene acid methyl ester (oligo (ethylene
Glycol) methacrylate) in be the ethylene glycol of Unit two, 350 grams of i-butyl methacrylate (IBMA) (first
Base Isobutyl 2-propenoate is Tg regulator, temperature sensitive monomer, can be regulated the critical transition temperature of material by the content added),
42 grams of hydroxyethylmethacrylate (HEMA: thermal cross-linking agent, used material needs heat cross-linking when, it is possible to
To be not added with), and 100 gram 2,2,2-trifluoroethyl acrylate (TFMA, the additive of regulation Refractive Index of Material, can
To increase the contrast of Refractive Index of Material, the intensity of reflected light making material is higher).
Step (d): completion of dropwise addition carries out breakdown of emulsion filtration and is dried to obtain Nano microsphere agglomerate precursor after 1 hour.To obtain
Nano microsphere and the butanediol acrylate (BDDA) of 32% mass fraction and mass fraction 2%
Benzophenone (benzophenone, UV cross-linked evocating agent) mix and blend forms thickness stabilized mixture.
Second step: the concrete preparation of composite optical thin film:
Step (a): by the mixture of synthesis as it is shown in figure 1, use scraper or other instruments to be coated in PET or other bases
On film, cover other layer protecting film above；
Step (b): put in UV solidification case, take out after three minutes.
Step (c): make upper and lower surface smooth through microstress roll-in the basement membrane of taking-up, is then passed through concussion and shears regular
Change process, makes the queueing discipline of Nano microsphere obtain more preferably optical property, and prepared material is 0 degree Celsius of critical temperature
There is obvious colour change function.
As it is shown in figure 1, be light-cured into membrane process for Nano microsphere coating；Fig. 1 a, by the slurry scraper of thickness or other
Instrument is coated uniformly on PET basement membrane；Fig. 1 b, affix surface protection film also are compacted become the three-decker being close to, three-layered node
Structure is as illustrated in figure 1 c；Afterwards thin film is put in UV curing oven, as shown in Figure 1 d；After three minutes take out solidified after thin
Film, such as Fig. 1 e and Fig. 1 f.
Composite optical thin film prepared by Fig. 2 nuclear shell structure nano microsphere.Owing to Nano microsphere shell and core layer be not by
Prepared by same material, shell uses elastomeric polymer materials such as polyethyl acrylate, and viscoelastic shell is in subsequent technique
Softer filler forms continuous phase medium in the gap of ball and ball.Microsphere and the height changes in contrast of medium refraction index, thin film
Structure can be formally can also be for trans.
Fig. 3 is that the composite optical thin film prepared of nuclear shell structure nano microsphere is with angle variable color schematic diagram.
Fig. 4. composite optical thin film prepared by nuclear shell structure nano microsphere changes direct reflection spectrum example with color,
R is reflectance, and in figure, direction indicated by arrows is continually changing along with the color of incident angle change material.The reflection of optics is with saturating
Penetrating a certain wavelength specular reflectivity 40% of comparison visible-range, the transmittance of the same band is less than 15%, and reflection peak is with saturating
Penetrating a width of 20-50nm of half-wave of paddy, the reflection peak of material is continually changing with the change of angle, is the highest when front incidence reflection
Reflection wavelength, the when that angle of incidence increasing, reflection peak offsets.
Embodiment 2
As a example by synthesis 320nm sized core-shell structure nano microsphere
The first step: the preparation of the Nano microsphere of nucleocapsid structure:
Step (a): the preparation of core layer: the first step uses 10 liters of reactors to join agitator, argon shield, is heated to 75 and takes the photograph
Family name's degree, premixes 2.6 grams of SDS, 2800 grams of deionized waters, 36 grams of polystyrene monomers, 4 grams of BDDA (1,3 butylene glycol diacrylate
Ester) enter reactor, reactor mixing speed 250rpm, it is subsequently adding 0.72 gram of Na2S2O5(sodium pyrosulfite) and 5.18 grams
Na2S2O8；
2.3 grams of SDS (dodecyl sodium sulfate), 4 grams of NaOH (regulation pH are added with 10ml speed per minute after 20 minutes
It is worth to 7.5), 2.2 grams of Dowfax2A1 (disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate salt), 900 grams of deionized waters, 700 grams of polystyrene
Monomer, 70 grams of BDDA.0.25 gram of Na is added after 30 minutes2S2O8Mixed solution with 5 grams of deionized water compositions；
Step (b): the preparation in intermediate layer: with speed 0.5 gram of SDS of addition per minute for 14ml after 15 minutes, 2.1 grams
250 grams of ethylacrylate (EA) monomer (ethyl acrylate) of Dowfax2A1,320g deionized water and 30 grams of ALMA monomers
(allyl methacrylate)；
Step (c): the preparation of shell: add 4 grams of SDS, 2 grams of NaOH, 1600 with speed per minute for 18ml after 20 minutes
Gram deionized water, 250 grams of EA monomers, 750 grams of N-isopropylacrylamide (NIPA), 350 grams of IBMA
(IBMA is as Tg regulator), 42 grams of HEMA (HEMA, hydroxyethyl methylacrylate is as thermal cross-linking agent), and 100 gram 2,2,
2-trifluoroethyl acrylate (TFMA, acrylic acid 2,2,2-trifluoro ethyl ester is as adjustable refractive index material).
Step (d): completion of dropwise addition carries out breakdown of emulsion filtration and is dried to obtain Nano microsphere agglomerate precursor after 1 hour.To obtain
Nano microsphere and the butanediol acrylate (BDDA) of 32% mass fraction and mass fraction 2%
Benzophenon (benzophenone, UV cross-linked evocating agent) mix and blend forms thickness stabilized mixture.
Second step: the concrete preparation of composite optical thin film:
Step (a): by the mixture of synthesis as it is shown in figure 1, use scraper or other instruments to be coated in PET or other bases
On film, cover other layer protecting film above；
Step (b): put in UV solidification case, take out after three minutes.
Step (c): make upper and lower surface smooth through microstress roll-in the basement membrane of taking-up, is then passed through concussion and shears regular
Change process, makes the queueing discipline of Nano microsphere obtain more preferably optical property, and prepared material is 0 degree Celsius of critical temperature
There is obvious colour change function.
Embodiment 3
As a example by synthesis 320nm sized core-shell structure nano microsphere
The first step: the preparation of the Nano microsphere of nucleocapsid structure:
Step (a): the preparation of core layer: the first step uses 10 liters of reactors to join agitator, argon shield, is heated to
80 degrees Celsius, premixing 2.6 grams of SDS, 2800 grams of deionized waters, 36 grams of polystyrene monomers, 4 grams of DVB enter reactor, and reactor stirs
Mix speed 250rpm, be subsequently adding 0.72 gram of Na2S2O5(sodium pyrosulfite) and 5.18 grams of Na2S2O8；
Adding 2.3 grams of SDS (dodecyl sodium sulfate) with 10ml speed per minute after 20 minutes, 4 grams of NaOH regulate pH
It is worth to 7.8,2.2 grams of Dowfax2A1 (disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate salt), 900 grams of deionized waters, 700 grams of polystyrene
Monomer, 70 grams of DVB.0.25 gram of Na is added after 30 minutes2S2O8Mixed solution with 5 grams of deionized water compositions；
Step (b): the preparation in intermediate layer: with speed 0.5 gram of SDS of addition per minute for 14ml after 15 minutes, 2.1 grams
250 grams of ethylacrylate (EA) monomer (ethyl acrylate) of Dowfax2A1,320g deionized water and 30 grams of ALMA monomers
(allyl methacrylate)；
Step (c): the preparation of shell: add 5 grams of SDS, 2 grams of NaOH, 1600 with speed per minute for 18ml after 20 minutes
Gram deionized water, 250 grams of EA monomers, 750 grams of dimethylaminoethylmethacrylate (dimethylaminoethyl acrylate methyl base ammonia
Base ethyl ester, 350 grams of i-butyl methacrylate (IBMA), IBMA is as Tg regulator), 42 grams
Hydroxyethylmethacrylate (HEMA): HEMA as thermal cross-linking agent, and 100 gram 2,2,2-
Trifluoroethyl acrylate (TFMA), TFMA is as adjustable refractive index material.
Step (d): completion of dropwise addition carries out breakdown of emulsion filtration and is dried to obtain Nano microsphere agglomerate precursor after 1 hour.To obtain
Nano microsphere and the Benzophenon of the DVB of 32% mass fraction and mass fraction 2% (benzophenone UV cross-links initiation
Agent) mix and blend formation thickness stabilized mixture.
Second step: the concrete preparation of composite optical thin film:
Step (a): by the mixture of synthesis as it is shown in figure 1, use scraper or other instruments to be coated in PET or other bases
On film, cover other layer protecting film above；
Step (b): put in UV solidification case, take out after three minutes.
Step (c): make upper and lower surface smooth through microstress roll-in the basement membrane of taking-up, is then passed through concussion and shears regular
Change process, makes the queueing discipline of Nano microsphere obtain more preferably optical property, and prepared material is 0 degree Celsius of critical temperature
There is obvious colour change function.
Embodiment 4
As a example by synthesis 320nm sized core-shell structure nano microsphere
The first step: the preparation of the Nano microsphere of nucleocapsid structure:
Step (a): the preparation of core layer: the first step uses 10 liters of reactors to join agitator, argon shield, is heated to 90 and takes the photograph
Family name's degree, premixes 2.6 grams of SDS, 2800 grams of deionized waters, 36 grams of polystyrene monomers, and 4 grams of DVB enter reactor, reactor stirring speed
Degree 250rpm, is subsequently adding 0.72 gram of Na2S2O5And 5.18 grams of Na2S2O8；
Adding 2.3 grams of SDS (dodecyl sodium sulfate) with 10ml speed per minute after 20 minutes, 4 grams of NaOH regulate pH
It is worth to 8.0,2.2 grams of Dowfax2A1 (disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate salt), 900 grams of deionized waters, 700 grams of polystyrene
Monomer, 70 grams of DVB.0.25 gram of Na is added after 30 minutes2S2O8Mixed solution with 5 grams of deionized water compositions；
Step (b): the preparation in intermediate layer: with speed 0.5 gram of SDS of addition per minute for 14ml after 15 minutes, 2.1 grams
250 grams of ethylacrylate (EA) monomer (ethyl acrylate) of Dowfax2A1,320g deionized water and 30 grams of ALMA monomers
(allyl methacrylate)；
Step (c): the preparation of shell: add 6 grams of SDS, 2 grams of NaOH, 1600 with speed per minute for 18ml after 20 minutes
Gram deionized water, 250 grams of EA monomers, 750 grams of N-, N-dimethylacrylamide (N,N-DMAA), 350 grams
I-butyl methacrylate (IBMA), IBMA is as Tg regulator), 42 grams of hydroxyethylmethacrylate
(HEMA): HEMA as thermal cross-linking agent, and 100 gram 2,2,2-trifluoroethyl acrylate (TFMA), TFMA make
For adjustable refractive index material.
Step (d): completion of dropwise addition carries out breakdown of emulsion filtration and is dried to obtain Nano microsphere agglomerate precursor after 1 hour.To obtain
Nano microsphere and the Benzophenon of the DVB of 32% mass fraction and mass fraction 2% (benzophenone UV cross-links initiation
Agent) mix and blend formation thickness stabilized mixture.
Second step: the concrete preparation of composite optical thin film:
Step (a): by the mixture of synthesis as it is shown in figure 1, use scraper or other instruments to be coated in PET or other bases
On film, cover other layer protecting film above；
Step (b): put in UV solidification case, take out after three minutes.
Step (c): make upper and lower surface smooth through microstress roll-in the basement membrane of taking-up, is then passed through concussion and shears regular
Change process, makes the queueing discipline of Nano microsphere obtain more preferably optical property, and prepared material is 0 degree Celsius of critical temperature
There is obvious colour change function.
Embodiment 5:
The application example of composite optical thin film prepared by nuclear shell structure nano microsphere:
The most as shown in Figure 5. composite optical thin film prepared by nuclear shell structure nano microsphere is on military camouflage tent
The application in face, in figure, 1 is fluffy of tent, uses under four spikes 2 are fixing.Prepared by nuclear shell structure nano microsphere
Composite optical thin film is fitted tightly on fluffy of cloth cover or plastic cover base material, and the critical temperature of material is adjusted to 40 and takes the photograph
Family name's degree, in forest or meadow thermal environment, material is green, but drastically raises due to temperature in the desert Environment of the torrid zone, material
Material variable color is yellow, adapts to ambient color.
The most as shown in Figure 6. composite optical thin film prepared by nuclear shell structure nano microsphere answering in architectural appearance
With.By the way of pad pasting, composite optical thin film can be adhered directly to build 3 outer surfaces and glass curtain wall 4 etc.
Smooth finish surface, variations in temperature when, composite optical film appearance color changes, and causes the color of building to exist
Difference change is produced the when of morning, noon, evening.
The most as shown in Figure 7. composite optical thin film prepared by nuclear shell structure nano microsphere is in the interior application loaded onto.Logical
The mode composite optical thin film crossing pad pasting can be adhered directly at interior of building door and window 5 and door and window peripheral region 6,
Variations in temperature when, composite optical film appearance color changes, and causes door and window 5 and door and window peripheral region 6
Color in the morning, noon, evening when produce difference change.
Embodiment 6:
Completed optical thin-film material prepared by the present invention typically has upper and lower two-layer protecting film, takes the circumstances into consideration when in use to take off
The most any one surface protective film, by the exposure of optical material directly against being combined on application target surface as shown in Figure 8.Specifically should
It is that the protecting film (P) of material (O) one side is taken off by mode, is then attached on the surface substrate (S) that cleaning processes, this
Surface roughness according to base material during individual, can alternatively be used binding agent.
Embodiment 7:
The application example of composite optical thin film prepared by nuclear shell structure nano microsphere:
7.1 packaging material as shown in Figure 9.Fig. 9 is the application in terms of product packaging material of the temperature sensing color changing optical material,
As a example by medicine packing box.After being removed by the protecting film of this material one side, optical material (O) surface of exposure has due to self
High viscosity can directly pressing or be attached to product packing box (B) surface, the outward appearance after laminating such as (OB).
7.2 electromagnetic induction as shown in Figure 10 and Figure 11.Figure 10 is that the electrochromism with water as flexible electrode material is combined
Materials optical thin film applicating example.Thin film (O) is attached to one layer of VHB polymeric substrates (V), VHB polymeric substrates (V) upper and lower
All there is the flexible electrode (W) that deionized water does on two sides, and the flexible electrode (W) of lower floor is placed in vessel (P), makees at extra electric field
The light penetrated with lower light source is collected the change of spectral signal after penetrating said apparatus by spectrogrph.
Figure 11 is to illustrate without attaching type application of electrode.After composite material film (O) is embedded in support coil (R), then put
Putting between the two poles of the earth (E) of high pressure equipment, the change of voltage (V) causes composite material film to strain variable color.
7.3 temperature sensing color changing optical material application in terms of electronic equipment outward appearance as shown in figure 12.Figure 12. temperature sensing color changing light
Learn the material applicating example as the wearable electronic outward appearance as a example by iwatch.Temperature sensing color changing optical material glues with thin film
The form of attached or band is as wrist strap (B) or dial plate (R) or the appearance material of display screen (D), and visual effect is preferable, increases
Sight.
7.4 automobile appearances as shown in fig. 13 that.Figure 13 is temperature sensing color changing optical material applicating example on automobile appearance.
Temperature sensing color changing optical thin film may be used for vehicle body (B) and vehicle window (W) pad pasting, thin film is directed or through viscose and is attached to car
Body or glass surface, outside applies PET or other materials protective layer, it is possible to achieve vehicle body and the personalized repacking of vehicle window color.
Temperature sensing color changing optical material is attached on automobile change with angle different colours, and visual effect is preferable, adds sight.
7.5 mechanically deforms as shown in Figure 14 and Figure 15.
Figure 14 is that mechanically deform causes temperature sensing color changing optical material variable color applicating example.Undeformed composite optical is thin
Film (O) has homogeneous stretching variable color character in the case of not having any additional structure, the existing convex print with certain pattern
Template (S) is pressed on thin film and realizes pattern transfer.The rough patterning of film surface causes under identical stress not
The strain of co-located is different, and weaker position strains position thick greatly and relatively and should diminish, thin film is through Tensile when not
The strain difference of co-located causes color that different changes occurs.Effect same can be by additional certain thickness on thin film
Other one layer or the realization of a few layer film.
Figure 15 is that mechanically deform causes temperature sensing color changing optical material variable color applicating example.Undeformed polymer composites
Optical thin film (O) has homogeneous stretching variable color character, now utilize UV lamp (L) by the shade (M) of opening selectively according to
Penetrate some characteristic area of material surface, utilize the photocrosslinking agent added in material to make illuminated partial cross-linked.Cross-linked areas material
The Young's modulus of material is much higher than the Young's modulus of uncrosslinked region material, so strains when material is stretched and is focusing more on
Uncrosslinked region, the region cross-linked then strains relatively small, strains the region that big field color change is the most uncrosslinked
Bigger.Required security pattern can be radiated at material surface in advance by this method, material face when not having mechanically deform
Color is homogeneous, and pattern is stealthy, displays due to the different pattern of zones of different deflection when material stands mechanically deform.
The application on the equipment such as pressure transducer or pressure indicator of the 7.6 temperature sensing color changing optical materials.
Figure 16 is the color change after not pressurizeing and pressurizeing of the composite optical thin film, and after pressurization, two-way drawing heaved by material
Stretch, cause color to be become blue from green.
Figure 17 is that temperature sensing color changing optical material is as pressure indicator schematic diagram.Temperature sensing color changing optical material (O) is enclosed in pressure
Power room (C) sensing opening part (left), to (right) after gas pressurized in pressure chamber, the stretching of material tympanites causes color to change.
Figure 18 be temperature sensing color changing optical material be applied to football surface do pressure instruction material schematic diagram.Temperature sensing color changing optics
Material (O) sticks to football (B) surface (left), and after football inflation, (right) material tension-thining causes color to change,
The when that air pressure inside reducing, this process can take a turn for the worse.
7.7 temperature sensing color changing optical materials are in the application at false proof aspect.
Figure 19 is temperature sensing color changing optical material applicating example as false proof band (O) on currency (C).For different goods
Coin base material, this material can be cut to band directly against being attached on currency base material use as false proof bar.
Figure 20 is that temperature sensing color changing optical material is as trade mark or security pattern applicating example.Except by temperature sensing color changing optics material
Outside expecting directly against being attached on base material use, (OS) various pattern can be imprinted or be combined one or more layers not on material film
The material (OP) prepared with sized microspheres thus form different pattern, it is achieved more complicated antiforge function.
It should be noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to foregoing embodiments, the present invention is described in detail, it will be understood by those within the art that: it is still
Technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is carried out
Equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technical side
The scope of case.
Claims (10)
1. a preparation method for temperature sensing color changing optical material, including preparing Nano microsphere, it is characterised in that specifically includes following
Step:
Step (1): prepare the Nano microsphere with nucleocapsid structure with emulsion polymerization, the Nano microsphere of nucleocapsid structure includes core
And shell, Shell Materials comprises polymer viscoelastic body；
Step (2): with rubbing method the Nano microsphere of preparation is coated in substrate and is processed into composite optical thin film, be temperature
Quick color-change optical material.
2. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: described core accounts for described core
The weight percentage of shell structural nano microsphere is 30-55%.
3. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: described shell accounts for described core
The weight percentage of shell structural nano microsphere is 30%-60%.
4. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: described shell and core it
Between be attached by intermediate layer, it is 5-20% that intermediate layer accounts for the weight percentage of described nuclear shell structure nano microsphere.
5. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: described core includes core
Material and cross-linking agent.
6. the preparation method of temperature sensing color changing optical material as claimed in claim 5, it is characterised in that: described core material includes
In polystyrene, silicon dioxide, polymethyl methacrylate, ferroso-ferric oxide, phenylethylamine, tin indium oxide, arsenic trioxide
At least one.
7. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: Shell Materials includes poly-third
Olefin(e) acid ethyl ester, polydimethylsiloxane, polyacrylic acid second two fat, polymethyl methacrylate, polyurethane, polystyrene, temperature-sensitive
Change one or more in monomer, acrylic compounds and rubber.
8. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that: prepare with emulsion polymerization
Having the Nano microsphere of nucleocapsid structure, concrete grammar comprises the following steps:
Step (a): the preparation of core layer: by core material, cross-linking agent, main initiator and co initiator 60-90 DEG C of mixing,
Regulation pH value, to 7-8, reacts 30 minutes；
Step (b): the preparation in intermediate layer: again buffer layer material is added with the speed of dripping of 7-21ml/min, and add emulsifying agent, instead
Answer 20 minutes；
Step (c): the preparation of shell: Shell Materials and heat sensitization monomer are added with the speed of dripping of 8-27ml/min, and adds folding
Penetrate rate regulation material, react 1 hour, breakdown of emulsion, dried obtain Nano microsphere.
9. the preparation method of temperature sensing color changing optical material as claimed in claim 1, it is characterised in that:
The Nano microsphere of preparation is coated in substrate with rubbing method and is processed into composite optical thin film by described step (2), tool
Preparation includes:
Step (a): step 1 is synthesized Nano microsphere and forms the mixing that thickness is stable after adding organic solvent or specific monomer
Thing, applies mixture on basement membrane, and basement membrane is coated with protecting film；
Step (b): put in UV solidification case, take out after solidification；
Step (c): extruded by the basement membrane microstress roller of taking-up and make its upper and lower surface smooth, is then passed through concussion shearing and i.e. obtains
Composite optical thin film.
10. the temperature sensing color changing optical material that prepared by the method as described in above-mentioned any one claim is in base camp tent, building
Outward appearance or built-in, packaging material, electronic equipment appearance material, automobile appearance material, dress material, sporting goods material, building
Application in terms of ornament materials, currency security strip material, brand material, pattern anti-fake material.
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| CN108845380A (en) * | 2018-07-27 | 2018-11-20 | 珠海光驭科技有限公司 | A kind of composite optical material |
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| RU2767470C1 (en) * | 2018-08-07 | 2022-03-17 | Е Инк Корпорэйшн | Flexible encapsulated electrooptical media |
| US11886050B2 (en) | 2018-08-07 | 2024-01-30 | E Ink Corporation | Flexible encapsulated electro-optic media |
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| WO2021031063A1 (en) * | 2019-08-19 | 2021-02-25 | 苏州科技大学 | Photonic crystal structure-based visualized heat accumulation indicator, manufacturing of same, and applications thereof |
| CN110481107A (en) * | 2019-09-05 | 2019-11-22 | 深圳市摩码克来沃化学科技有限公司 | One kind can dynamic optically variable films and preparation method thereof |
| CN112625289B (en) * | 2020-12-16 | 2021-10-26 | 华南理工大学 | Polyacrylic acid-based structural color elastomer and preparation method and application thereof |
| CN112625289A (en) * | 2020-12-16 | 2021-04-09 | 华南理工大学 | Polyacrylic acid-based structural color elastomer and preparation method and application thereof |
| CN112876622A (en) * | 2021-01-08 | 2021-06-01 | 复旦大学 | Intelligent monitoring label for vaccine cold chain transportation and preparation method thereof |
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