CN110041614A - A kind of quantum dot light transition material and its preparation method and application - Google Patents
A kind of quantum dot light transition material and its preparation method and application Download PDFInfo
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Abstract
The present invention relates to a kind of quantum dot light transition material and its preparation method and application, the quantum dot light transition material includes substrate and quanta point material, and the substrate is olefin polymer.Olefin polymer, which will not induce quantum dot ligand to fall off, causes quantum yield to reduce, and has good water and oxygen barrier property, is able to maintain that the stability of quantum dot.Preparation method is simple, and cost is relatively low, does not need to avoid polar group adverse effect caused by quantum dot in organic solvent by organic solvent, at the same also avoid solvent volatilize so that process slowly and its bring problem of environmental pollution.
Description
Technical field
The invention belongs to light quantum field of material technology, has and be related to a kind of quantum dot light transition material and preparation method thereof
And application.
Background technique
With the arriving of digital Age, liquid crystal display (LCD) has become current most common display technology.Because
LCD has the advantages that environmentally protective, energy consumption is low, Low emissivity, picture is soft, so LCD will be mainstream in coming few decades
Display technology.LCD is the display device of non-luminescent property, need can be only achieved the function of display by backlight.
Existing display mainly uses traditional filter technology, generallys use white light LED backlight and common color is added to filter
Liquid crystal cell on mating plate (CF) and panel cooperatively forms colored display.The display gamut range of which is relatively narrow, can only generally reach
To 70% NTSC color gamut.And since optical filter is to realize colored display and filtering the light of other wavelength, energy utilization
Rate only has 30%, and LCD overall energy efficiency is caused there was only 4%, is the big major technology bottleneck of screen power consumption.With display
The development and progress of technology, quantum dot show huge potentiality in display field, are converted using the light of quanta point material preparation
Film substitutes traditional optical filter, and the range of display colour gamut not only can be improved, can also improve capacity usage ratio, be allowed to more save
It can environmental protection.
Currently, the preparation of the light conversion film of quanta point material mainly uses two methods.First method is using glue
It is mixed with quanta point material, then glue is evenly distributed on substrate by modes such as coatings, is formed after glue curing
Light conversion film (can be glue layer individually to form a film, or directly form integrated film with substrate).Second method is to use
Can dissolve substrate in a solvent in room temperature or heating, and quantum dot is dispersed in substrate solution, then pass through mold or
The means processing such as person's coating, volatilizees to solvent and separates to form quantum dot light conversion film with substrate.
But requirement of the first method using the method that glue is mixed with quantum dot to glue is relatively high, it is usually used
Glue be silica type, esters of acrylic acid and epoxies, include the stronger group of polarized in these glue, as ester group, hydroxyl,
Carbonyl, epoxy group and halide ion etc., these groups or ion can induce quantum dot ligand to fall off under light illumination causes quantum to produce
Rate reduces, and is unfavorable for the stability of quantum dot；The substrate of film simultaneously containing hydrophilic radicals such as ester group, hydroxyls cannot be effective
The oxygen that blocks water, protect quantum dot；Although in addition, forming the light conversion film of sandwich structure using quantum dot glue conjugated polymer
It is avoided that influence of the water oxygen to quantum dot, but this structure will lead to light conversion film thickness thicker, higher cost.Second of side
In method, polymer in a solvent can be dissolved at room temperature, generally also had polar group, be similarly also unfavorable for quantum dot
Stabilization, while solvent volatilization process slowly and bring environmental problem all be production unfavorable factor.
CN107102384A discloses a kind of quantum dot optical film, including quantum dot glue-line, in the quantum dot glue-line
In contain quantum dot, quantum dot glue-line two sides is equipped with composite film, and the end face of the quantum dot optical film is equipped with end face guarantor
Protect coating；The composite film is combined by EVOH film with polyolefin film, quantum dot glue-line and the EVOH film phase
Even.The present invention uses multilayered structure, and quantum dot glue-line is wrapped in two composite membranes, and wherein evoh layer is high to oxygen obstruction rate, gathers
Olefin layer is high to water rejection rate, and the protective coating of high obstructing performance is coated on the end face of quantum dot glue-line, can prevent gas
Body is permeated from the end face of quantum dot film.But contains in glue-line and be unfavorable for the stable polar group of quantum dot, and this sandwich
The optical film thickness of structure is thicker.
CN106876560A discloses a kind of quantum dot film, and the quantum dot film includes the first barrier being cascading
Layer, quantum dot layer and the second barrier layer, wherein the quantum dot layer contains quantum dot and metal nanoparticle, and with the amount
The total weight of son point layer is 100% meter, and the weight percentage of the metal nanoparticle is 0.1-5%.The quantum dot film
Preparation method, include the following steps: to provide quantum dot solution, metal nanoparticle solution and curable polymer precursor, mixing
It is configured to quantum dot glue；First barrier layer is provided, deposits the quantum dot glue forming amount in the first barrier layer surface
Son point glue layer, forms the second barrier layer in the quantum dot glue layer surface, obtains quantum dot film prefabrication；By the quantum
Point film prefabrication carries out curing process, obtains quantum dot film.Equally contain in its glue-line and is unfavorable for the stable polar group of quantum dot
Group, and preparation method is relative complex.
CN109337604A discloses a kind of quantum dot glue for being used to prepare quantum dot film, the by weight amount of including:
Sub- 1-10 parts of point, 60-70 parts of resin, 1-5 parts and 1-5 parts 20-30 parts of monomer, photoinitiator diffusion particles.Preparation method
It include: that above-mentioned quantum dot glue is coated on the one side that protective film is pre-coated with barrier layer, so that the side of protective film forms quantum
Point glue-line；Another protective film is laminating in quantum dot glue-line another side, it is then carried out so that barrier layer is contacted with quantum dot glue-line
UV solidifies to obtain quantum dot film provided by the invention.Similarly there is above-mentioned drawback in the product.
Therefore, developing the quantum dot light transition material that a kind of preparation method is simple, environmentally protective, stability is good is to have very much
It is necessary.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of quantum dot light transition material and its preparation sides
Method and application.The quantum dot light transition material overcomes in the prior art that quantum dot membrane stability is not high, thickness is thicker, the side of preparation
The drawbacks of method complexity, higher cost, pollution environment, be the quantum dot that a kind of preparation method is simple, environmentally protective, stability is good
Light conversion material.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of quantum dot light transition material, the quantum dot light transition material includes substrate
And quanta point material, the substrate are olefin polymer.
Olefin polymer is mainly made of hydrocarbon atom, and component is single and does not have polar group, therefore will not lure
Leading quantum dot ligand and falling off causes quantum yield to reduce, and maintains the stability of quantum dot；And olefin polymer has good
Water and oxygen barrier property, the water oxygen in quantum dot and environment can be completely cut off, and its high transparency can farthest reduce light
By the absorption of material；Meanwhile olefin polymer under the high temperature conditions can be in a molten state, can mix well with quantum dot
It closes, does not need by other organic solvents.
Preferably, the quanta point material includes that simple quantum dot, the quantum dot of inorganic material modification or organic material are repaired
The quantum dot of decorations.
Preferably, the quantum dot includes CdSe, CdTe, CdS, ZnSe, CdTe, CuInS, InP, CsPbX3, CuZnSe
In ZnMnSe any one or at least two combination, described at least two combination such as CdSe and CdTe combination,
Combination, CsPbX3 and the CuZnSe of ZnSe and CdTe and the combination of ZnMnSe etc..
Preferably, the inorganic material includes any one in silica, titanium oxide or aluminium oxide or at least two
Combination, the described at least two combination combination of such as silica and titanium oxide, the combination of titanium oxide and aluminium oxide, silica and
Titanium oxide and the combination of aluminium oxide etc..
Preferably, the organic material includes any one in zinc stearate, aluminum stearate, magnesium stearate or polystyrene
Kind or at least two combination, the described at least two combination combination of such as zinc stearate and aluminum stearate, aluminum stearate and
Combination, magnesium stearate and combination of polystyrene of magnesium stearate etc..
Preferably, the olefin polymer includes by ethylene, propylene, 1- butylene, 1- amylene, 1- hexene, 1- octene, 4-
Methyl-1-pentene or cycloolefin be polymerized alone or combined polymerization made of polymer.
Preferably, the olefin polymer includes polyethylene, polypropylene or polycyclic alkene.
Preferably, the number-average molecular weight of the olefin polymer be 2000-400000, such as 2000,5000,10000,
20000,30000,50000,60000,80000,100000,200000,300000 or 400000 etc., preferably 10000-
100000。
The specific selection of the number-average molecular weight of the olefin polymer is in the range of 2000-400000, within this range
It just can guarantee that olefin polymer has preferable mixed effect with quantum dot in molten condition, so that the quantum dot in material has
There is high stability, and 10000-100000 is the range for realizing more preferable effect.
Preferably, the mass ratio of the quanta point material and olefin polymer is 1:(10-10000), such as 1:10,1:
20、1:40、1:50、1:80、1:100、1:200、1:500、1:700、1:1000、1:2000、1:4000、1:5000、1:8000
Or 1:10000 etc., preferably 1:(100-1000).
The specific selection of the mass ratio of the quanta point material and olefin polymer is in 1:(10-10000) in the range of, it is
Because quantum dot can preferably convert blue light to the fluorescence of quantum dot itself within this range.
Preferably, the quantum dot light transition material further includes auxiliary agent.
Preferably, the auxiliary agent include in dispersing agent, coupling agent or scattering particles any one or at least two group
It closes, described at least two combination is such as the combination of the combination of dispersing agent and coupling agent, coupling agent and scattering diluent.
Second aspect, the present invention provide a kind of preparation method of quantum dot light transition material as described above, the preparation
Method are as follows: melt olefin polymer using hot worked mode, quanta point material and the olefin polymer of melting are mixed
It closes, obtains the quantum dot light transition material.
The preparation method technique of quantum dot light transition material according to the present invention is very simple, and required raw material is also very
It is few, and do not need to avoid polar group adverse effect caused by quantum dot in organic solvent by organic solvent, simultaneously
Also avoid solvent volatilize so that process slowly and its bring problem of environmental pollution.
Preferably, the hot-working refer to by temperature control at 80-250 DEG C, such as 80 DEG C, 100 DEG C, 120 DEG C, 130 DEG C,
140 DEG C, 150 DEG C, 160 DEG C, 180 DEG C, 200 DEG C, 220 DEG C or 250 DEG C etc., preferably 80-180 DEG C.
The hot processing temperature is regioselective above range, too high or too low for temperature all to generate not to quantum yield
The influence of benefit, and different substrates has different processing temperatures, and 80-180 DEG C is preferred range.
Preferably, the mass ratio of the quanta point material and olefin polymer is 1:(10-10000), such as 1:10,1:
20、1:40、1:50、1:80、1:100、1:200、1:500、1:700、1:1000、1:2000、1:4000、1:5000、1:8000
Or 1:10000 etc., preferably 1:(100-1000).
The quanta point material can also adjust the ratio of different component arbitrarily according to the actual application with this regulated quantity
The color of son point light conversion material.
Preferably, the mixed mode includes stirring or ultrasound.
Preferably, the mixed time be 2min-24h, such as 2min, 5min, 10min, 20min, 30min, 1h,
2h, 4h, 6h, 8h, 10h, 20h or for 24 hours etc., preferably 10min-30min.
The mixed time is regioselective range, and incorporation time is short to will affect the dispersion of quantum dot in the substrate,
Cause uneven；Incorporation time length can make to continue place at high temperature, can reduce the quality of quantum dot, and 10min-30min is more
Preferred range.
As the preferred technical solution of the present invention, the preparation method is that: by alkene under 80-250 DEG C of heating condition
Quasi polymer melting, the mass ratio with olefin polymer is 1:(10-10000 by the mode with stirring or ultrasound) quantum dot
The olefin polymer mixing 2min-24h of material and melting, obtains the quantum dot light transition material.
The third aspect, the present invention provide a kind of quantum dot light conversion film, and the quantum dot light conversion film is by as described above
Quantum dot light transition material be prepared.
Quantum dot light conversion film according to the present invention is one layer of structure, significantly reduces light conversion film in the prior art
Thickness, and the stability of film is very high.
Fourth aspect, the present invention provide a kind of preparation method of quantum dot light conversion film as described above, the quantum dot
Light conversion film the preparation method comprises the following steps: quantum dot light transition material is directly carried out film forming processing or first converts quantum dot light
Material carries out film forming processing after being granulated again, obtains the quantum dot light conversion film.
Preferably, the method for film forming processing include rolling process, the tape casting, blow moulding, injection moulding, pulling method or
Casting method.
Quantum dot light transition material according to the present invention can be made with different technique according to the actual application
The standby product at various shape or structure, is not limited only to above-mentioned quantum dot light conversion film.
Compared with the existing technology, the invention has the following advantages:
Its substrate of quantum dot light transition material according to the present invention selects olefin polymer, and olefin polymer is main
It is made of hydrocarbon atom, component is single and does not have polar group, therefore quantum dot ligand will not be induced to fall off lead to quantum
Yield reduces, and is able to maintain that the stability of quantum dot；And olefin polymer has good water and oxygen barrier property, can will measure
Son point completely cuts off with the water oxygen in environment, also advantageous to maintenance quantum dot stability, and its high transparency can farthest subtract
Few light is by the absorption of material；Meanwhile olefin polymer under the high temperature conditions can be in a molten state, is able to achieve and quantum dot
Mixing well does not need to avoid the polar group in organic solvent by other organic solvents caused by quantum dot not
Benefit influence, while also avoid solvent volatilize so that process slowly and its bring problem of environmental pollution.Quantum dot light conversion
The preparation method simple possible of material, cost is relatively low, and very high using its quantum dot light conversion film stability obtained, relatively
The quantum dot light conversion film of other two kinds of prior art preparations, the service life under illumination ageing test significantly improve.
Detailed description of the invention
The burn-in test life time decay figure for the quantum dot light conversion film that Fig. 1 is embodiment 1 and comparative example 1-2 is prepared respectively.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method
Are as follows:
By 100g polypropylene fusion under 180 DEG C of heating condition, make it in viscous state, with the mode of stirring by 0.1g
The polypropylene mixing 10min of CdSe quantum dot powder and melting, obtains the quantum dot light transition material.Then by the quantum dot
Light conversion material is extruded into sheet material by extruder, stretches by traction, cooling, and the quantum dot light conversion film is made.
Embodiment 2
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method
Are as follows:
100g polyethylene is melted under 130 DEG C of heating condition, makes it in viscous state, with the mode of stirring by 0.1g
The polyethylene mixing 10min of CdSe quantum dot powder and melting, obtains the quantum dot light transition material.Then by the quantum dot
Light conversion material is extruded into sheet material by extruder, stretches by traction, cooling, and the quantum dot light conversion film is made.
Embodiment 3
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is InP.Preparation method are as follows:
100g polyethylene is melted under 130 DEG C of heating condition, makes it in viscous state, with the mode of stirring by 1g InP
The polyethylene mixing 2h of quantum dot powder and melting, obtains the quantum dot light transition material.Then the quantum dot light is converted
The quantum dot light conversion film is made using the tape casting in material.
Embodiment 4
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is poly- cyclohexene, and the quanta point material is CsPbX3@SiO2.It is made
Preparation Method are as follows:
The poly- cyclohexene of 1000g is melted under 220 DEG C of heating condition, makes it in viscous state, with the mode of ultrasound by 1g
CsPbX3@SiO2The poly- cyclohexene mixing 30min of quantum dot powder and melting, obtains the quantum dot light transition material.Then by institute
It states quantum dot light transition material to be granulated by pelletizer, pellet is molded in a mold again by injection molding machine, and the amount is made
Son point light conversion film.
Embodiment 5
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate, quanta point material and auxiliary agent, and the substrate is poly- 1- hexene, and the quanta point material is CuZnSe@
TiO2, the auxiliary agent is silicone oil, preparation method are as follows:
The poly- cyclohexene of 1000g is melted under 80 DEG C of heating condition, makes it in viscous state, with the mode of ultrasound by 1g
CuZnSe@TiO2The silicone oil of quantum dot powder and 30g mix for 24 hours with the poly- cyclohexene of melting, obtain the quantum dot light conversion material
Material.Then the quantum dot light transition material being granulated by pelletizer, pellet is molded in a mold again by injection molding machine,
The quantum dot light conversion film is made.
Embodiment 6
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method
Are as follows:
By 100g polypropylene fusion under 180 DEG C of heating condition, make it in viscous state, with the mode of stirring by 1g
The polypropylene mixing 30min of CdSe quantum dot powder and melting, obtains the quantum dot light transition material.Then by the quantum dot
Light conversion material is extruded into sheet material by extruder, stretches by traction, cooling, and the quantum dot light conversion film is made.
Embodiment 7
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1 is only that the quality by CdSe quantum dot powder replaces with 0.01g, other are consistent.
Embodiment 8
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1 is only that the quality by CdSe quantum dot powder replaces with 10g, other are consistent.
Embodiment 9
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1, which is only that, replaces with 5min by 10min for incorporation time, other are consistent.
Embodiment 10
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1, which is only that, replaces with 20min by 10min for incorporation time, other are consistent.
Embodiment 11
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1, which is only that, replaces with 30min by 10min for incorporation time, other are consistent.
Embodiment 12
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1, which is only that, is replaced with incorporation time for 24 hours by 10min, other are consistent.
Embodiment 13
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polypropylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 1, which is only that, replaces with 2min by 10min for incorporation time, other are consistent.
Embodiment 14
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 140 DEG C by 130 DEG C for heating temperature, other are consistent.
Embodiment 15
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 160 DEG C by 130 DEG C for heating temperature, other are consistent.
Embodiment 16
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 180 DEG C by 130 DEG C for heating temperature, other are consistent.
Embodiment 17
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 200 DEG C by 130 DEG C for heating temperature, other are consistent.
Embodiment 18
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 80 DEG C by 130 DEG C for heating temperature, other are consistent.
Embodiment 19
The present embodiment provides a kind of quantum dot light transition material and a kind of quantum dot light conversion film, the quantum dot light conversion
Material is made of substrate and quanta point material, and the substrate is polyethylene, and the quanta point material is CdSe.Preparation method is
Difference with embodiment 2, which is only that, replaces with 250 DEG C by 130 DEG C for heating temperature, other are consistent.
Comparative example 1
This comparative example provides a kind of quantum dot light conversion film, preparation method are as follows: by 1.2g methyl methacrylate
(PMMA) it is dissolved in 20mL toluene solution, adds the toluene solution of the CdSe quantum dot containing 1.2mg, be uniformly mixed, then will mix
It closes solution to pour into mold, place for 24 hours, the quantum dot light conversion film is made to toluene volatilization.
Comparative example 2
This comparative example provides a kind of quantum dot light conversion film, preparation method are as follows: is dissolved in 200mg CdSe quantum dot
In 10mL acrylate glue, then the acrylate solution of quantum dot is coated in PET film by coating machine, to quantum dot
After the completion of glue application, then another layer of PET film be covered on quantum dot glue layer, be put into ultra-violet curing agent, to glue
Quantum dot light conversion film can be obtained after solidification.
Evaluation experimental:
1, quantum dot light conversion film made from embodiment 1-8 and comparative example 1-2 is subjected to illumination ageing test.
2, quantum dot light conversion film made from embodiment 1 and embodiment 9-13 is subjected to quantum yield test.
3, quantum dot light conversion film made from embodiment 2 and embodiment 14-19 is subjected to quantum yield test.
Specific test method are as follows:
Evaluation test 1: by quantum dot light conversion film made from embodiment 1-8 and comparative example 1-2 in 60 DEG C, the item of 90%RH
Under part, under the irradiation of blue light, its light conversion film quantum yield at 0 day, 1 day, 3 days, 5 days and 7 days is tested respectively, is tested
The results are shown in Table 1: embodiment 1-8 is using the quantum dot light conversion film of the method for the invention preparation under the conditions of burn-in test
Relative quantum yields have been decayed 13-22% in 7 days, under similarity condition, are prepared using comparative example 1 and 2 the method for comparative example
Quantum dot light conversion film Relative quantum yields have dropped 32% and 42% respectively, it can be seen that the quantum dot light of embodiment 1-8
The ageing-resistant performance of conversion film is substantially better than the quantum dot light conversion film of comparative example 1 and comparative example 2.
Evaluation test 2: 9 methods are used, the quantum dot light conversion film nine made from embodiment 1 and embodiment 9-13 is not
Nine samples are chosen in same place, test its quantum yield respectively, average.Test result is as shown in table 2: quanta point material
Incorporation time with olefin polymer is to influence a critically important factor of light conversion film quantum yield, and incorporation time is too short
Or the too long quality that can all reduce quantum dot light conversion film, wherein 10min-30min is preferred range.
Evaluation test 2: 9 methods are used, not by quantum dot light conversion film nine made from embodiment 2 and embodiment 14-19
Nine samples are chosen in same place, test its quantum yield respectively, average.Test result is as shown in table 3: polymerization of olefines
The hot processing temperature of object is a critically important factor for influencing light conversion film quantum yield, too high or too low for temperature all to reduce
The quality of quantum dot light conversion film, wherein 80-180 DEG C is preferred range.
Table 1
| Time | 0 day | 1 day | 3 days | 5 days | 7 days |
| Embodiment 1 | 82.1% | 76.3% | 77.9% | 72.9% | 69.7% |
| Embodiment 2 | 83.6% | 74.2% | 75.3% | 69% | 65.6% |
| Embodiment 3 | 76.4%. | 71.2% | 72.1% | 66.9% | 64.5% |
| Embodiment 4 | 62.1% | 57.9% | 59.2% | 56.4% | 54% |
| Embodiment 5 | 72.9% | 68.3% | 69.1% | 64.3% | 61.9% |
| Embodiment 6 | 77.9% | 72.4% | 74% | 69.3% | 65.8% |
| Embodiment 7 | 81.9% | 76.9% | 78.2% | 73.2% | 71.2% |
| Embodiment 8 | 81.5% | 76.1% | 77.5% | 72.1% | 69.5% |
| Comparative example 1 | 68.2% | 58.5% | 60.5% | 50.3% | 46.2% |
| Comparative example 2 | 72.8% | 54.7% | 59.9% | 48.2% | 42.3% |
Table 2
Table 3
| Group | Heating temperature | Quantum yield |
| Embodiment 2 | 130℃ | 83.6% |
| Embodiment 14 | 140℃ | 83.1% |
| Embodiment 15 | 160℃ | 82.3% |
| Embodiment 16 | 180℃ | 81.9% |
| Embodiment 17 | 200℃ | 76.4% |
| Embodiment 18 | 80℃ | 83.1% |
| Embodiment 19 | 250℃ | 47.2% |
The Applicant declares that the present invention is explained by the above embodiments, son of the invention puts light conversion material and its preparation side
Method and application, but the present invention is not limited to the above embodiments, that is, does not mean that the present invention must rely on above-described embodiment ability
Implement.It should be clear to those skilled in the art, any improvement in the present invention, to each raw material of product of the present invention etc.
Effect replacement and addition, the selection of concrete mode of auxiliary element etc., all of which fall within the scope of protection and disclosure of the present invention.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
Claims (10)
1. a kind of quantum dot light transition material, which is characterized in that the quantum dot light transition material includes substrate and quantum dot material
Material, the substrate are olefin polymer.
2. quantum dot light transition material as described in claim 1, which is characterized in that the quanta point material includes simple quantum
The quantum dot of point, the quantum dot of inorganic material modification or organic material modification；
Preferably, the quantum dot include CdSe, CdTe, CdS, ZnSe, CdTe, CuInS, InP, CsPbX3, CuZnSe or
In ZnMnSe any one or at least two combination；
Preferably, the inorganic material include in silica, titanium oxide or aluminium oxide any one or at least two combination；
Preferably, the organic material include in zinc stearate, aluminum stearate, magnesium stearate or polystyrene any one or
At least two combination.
3. quantum dot light transition material as claimed in claim 1 or 2, which is characterized in that the olefin polymer include by
Ethylene, propylene, 1- butylene, 1- amylene, 1- hexene, 1- octene, 4-methyl-1-pentene or cycloolefin be polymerized alone or combined polymerization and
At polymer；
Preferably, the olefin polymer includes polyethylene, polypropylene or polycyclic alkene；
Preferably, the number-average molecular weight of the olefin polymer is 2000-400000, preferably 10000-100000.
4. quantum dot light transition material as claimed in any one of claims 1-3, which is characterized in that the quanta point material with
The mass ratio of olefin polymer is 1:(10-10000), preferably 1:(100-1000)；
Preferably, the quantum dot light transition material further includes auxiliary agent；
Preferably, the auxiliary agent include in dispersing agent, coupling agent or scattering diluent any one or at least two combination.
5. such as the preparation method of quantum dot light transition material of any of claims 1-4, which is characterized in that the system
Preparation Method are as follows: melt olefin polymer using hot worked mode, by the olefin polymer of quanta point material and melting
Mixing, obtains the quantum dot light transition material.
6. the preparation method of quantum dot light transition material as claimed in claim 5, which is characterized in that the hot-working refer to by
Temperature is controlled at 80-250 DEG C, and preferably 80-180 DEG C；
Preferably, the mass ratio of the quanta point material and olefin polymer is 1:(10-10000), preferably 1:(100-
1000)。
7. such as the preparation method of quantum dot light transition material described in claim 5 or 6, which is characterized in that the mixed side
Formula includes stirring or ultrasound；
Preferably, the mixed time is 2min-24h, preferably 10min-30min.
8. the preparation method of the quantum dot light transition material as described in any one of claim 5-7, which is characterized in that the system
Preparation Method are as follows: olefin polymer is melted under 80-250 DEG C of heating condition, it will be with alkene with the mode of stirring or ultrasound
The mass ratio of quasi polymer is 1:(10-10000) quanta point material and the olefin polymer mixing 2min-24h of melting, obtain
To the quantum dot light transition material.
9. a kind of quantum dot light conversion film, which is characterized in that the quantum dot light conversion film is by any in such as claim 1-4
What the quantum dot light transition material described in was prepared.
10. the preparation method of quantum dot light conversion film as claimed in claim 9, which is characterized in that the preparation method is that: it will
Quantum dot light transition material directly carry out film forming processing or first will quantum dot light transition material be granulated after carry out again film at
Type processing, obtains the quantum dot light conversion film；
Preferably, the method for the film forming processing includes rolling process, the tape casting, blow moulding, injection moulding, pulling method or casting
Method.
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