CN102295833A - Nano optical composite material, and preparation method and application thereof - Google Patents
Nano optical composite material, and preparation method and application thereof Download PDFInfo
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- CN102295833A CN102295833A CN2011101581821A CN201110158182A CN102295833A CN 102295833 A CN102295833 A CN 102295833A CN 2011101581821 A CN2011101581821 A CN 2011101581821A CN 201110158182 A CN201110158182 A CN 201110158182A CN 102295833 A CN102295833 A CN 102295833A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention provides a nano optical composite material, and a preparation method thereof and a display screen obtained thereof. Master batches comprise a high-molecular polycarbonate, a flexibilizer with a core-shell structure and a particle size of 0.3-0.35 mum, wherein the core is a butadiene styrene rubber and the shell is polymethyl methacrylate, a benzotriazol light stabilizer, super high molecular weight polysiloxane, a 2.6-3.6 mum polymethacrylate-type light scattering particle with a refractive index of 1.49, and a halogen free and environment-friendly sulfonate fire retardant. The nano optical composite material and the display screen prepared therefrom can realize absorption, aggregation, transmission and transformation of light, and gains excellent physical and chemical properties and optical performances, through different ratios of raw materials, an advanced production technology, and a mode of employing a five-layer microlens array, doping different nano particles and improving a microstructure of a lamination surface.
Description
Technical field
The present patent application relates to a kind of nanocomposite optical matrix material and its production and application, belongs to optical device and new material technology field.
Background technology
In the screen display field, two kinds of screens are arranged generally on the market at present: scattering (diffuse-reflectance) screen and optics (Fresnel) screen.The diffuse-reflectance screen exists low, the poor definition of gain, contrast gradient is low, solar effect is obvious, quality is very different defective; That optical screen exists is yielding, low lightness, ghost image is many, Moire fringe is obvious, manufacturing is complicated, the defective that involves great expense.
So-called Moire fringe is a kind of optical phenomena that 18th century France researchist More at first finds, from technical standpoint, Moire fringe is the visual results that interferes with constant angles and frequency between two lines or two objects, when human eye can't be differentiated these two lines or two objects, can only see the decorative pattern of interference, this optical phenomena is exactly a Moire fringe.
Optical screen and scattering screen generally all are made of vinylformic acid on the market at present, and vinylformic acid is that chemical formula is the organic compound of C3H4O2, is the simplest unsaturated carboxylic acid, are made up of a vinyl and a carboxyl.Pure vinylformic acid is achromaticity and clarification liquid, has the irritating smell of feature.It can dissolve each other with water, alcohol, ether and chloroform, is by the propylene production that obtains from refinery.Vinylformic acid is because its physicals is excellent inadequately, the screen of its making also inevitably exist above-mentioned poor definition, solar effect obviously, defective such as low lightness, Moire fringe is obvious.
Summary of the invention
The present patent application promptly is the above-mentioned defective that exists in the optical displays field at present, a kind of new nano composite material and the screen of being made by this material are provided, this screen is except keeping beautiful appearance and good physics, chemical property, also has excellent optical property, can reach high-resolution, high penetration, the image display effect at high uniformity, high-contrast, high brightness, wide visual angle.
Another purpose of the present patent application provides the making method of this material.
Specifically, the masterbatch of the described nanocomposite optical matrix material of the present patent application is characterized in that: described masterbatch comprises the various components of following weight part:
1. polyphosphazene polymer carbonic ether 70-90 part;
2. the toughner of the nucleocapsid structure of particle diameter 0.3-0.35um, its center is divinyl one styrenerubber, shell is polymethylmethacrylate 5-8 part;
3. benzotriazole photostabilizer 0.15-0.6 part;
4. ultra-high molecular weight polysiloxane 0.1-0.3 part;
5. specific refractory power is light diffusion particle 0.5-3.0 part of 1.49 2.6-3.6um polymethacrylate type;
6. halogen-free environmental Sulfonates fire retardant 0.06-0.1 part.
Wherein, the molecular structure of polyphosphazene polymer carbonic ether is-[O-(C6H4)-C (CH3) 2-(C6H4)-O-CO-] n-), polycarbonate (being called for short PC) is the high molecular polymer that contains carbonate group in the molecular chain, structure according to ester group can be divided into broad varietys such as aliphatics, aromatic series, aliphatic-aromatic, the polycarbonate water white transparency, heat-resisting, shock resistance, fire-retardant BI level all has the favorable mechanical performance in common use temperature.Compare near polymethylmethacrylate with performance, the impact resistance of polycarbonate is good, specific refractory power height, good processability.
The toughner of the nucleocapsid structure of particle diameter 0.3-0.35um can make material have excellent toughness below-30 ℃ equally, and can also improve PC stress cracking resistance shortcoming; The benzotriazole photostabilizer can prevent further that solar ultraviolet from causing that the tired flavescence phenomenon of product takes place; The ultra-high molecular weight polysiloxane plays the effect of high light wearable, specific refractory power is the light diffusion particle of 1.49 2.6-3.6um titanium dioxide (TiO2) particle polymethacrylate type, can make that transmitted light constantly reflects between chemical particle and basic unit, reflection and scattering, convert pointolite to area source, form the even diffusion effect of light, reach the consistence of display effect; Halogen-free environmental Sulfonates fire retardant has the effect that improves flame retardant effect.
The manufacture craft of the described nanocomposite optical matrix material of the present patent application masterbatch, as described below:
1, with after the above-mentioned various raw materials pretreatment, heat separately to 150 ℃-270 ℃, enter hopper jointly and stir;
2, enter extrusion machine behind the uniform mixing and be warmed up to 270 ℃-300 ℃, material is by screw rod successive extruder head;
3, enter mould insulation reaction 1.5-2.5 hour typing, through cooling be cooled to room temperature 10-25 ℃, the operation through traction, cutting is shaped to the base material embryonic plate of preset thickness then; Wherein, the base material embryonic plate that draws, is cut into preset thickness all is the sophisticated Technology that has earlier, repeats no more here;
4, pass through disintegrating apparatus then, this embryonic plate is ground into 1 * 1 * 3 millimeters standard particle.
The present patent application also provides the base material of above-mentioned nanocomposite optical matrix material, and described base material comprises masterbatch and light diffusion particle, and wherein, the weight part of each component is as described below:
1, masterbatch 96-99 part;
2, specific refractory power is that 1.49 median size is light diffusion particle 1-1.5 part of the polymethacrylate type of 2.6-3.6um.
Further, described base material can also comprise the composition of following weight part:
1, median size is light diffusion particle 1-1.5 part of the polymethacrylate type of 5.2-6.2um;
2, median size is light diffusion particle 0.5-1.0 part of the polymethacrylate type of 9.0-12um.
These light diffusion particles make that transmitted light constantly reflects between chemical particle and basic unit, reflection and scattering, can convert pointolite to area source, form the even diffusion effect of light, can significantly improve the astigmatism to light, even photosensitiveness, aggregation and light conductivity.
The manufacture craft of above-mentioned base material is as described below: above-mentioned masterbatch and light diffusion particle are heated respectively to 150 ℃-270 ℃, after above-mentioned masterbatch becomes melt, the light diffusion particle enters hopper again and stirs, after the full and uniform mixing, enter extrusion machine, be warmed up to 270 ℃-300 ℃, by screw rod successive extruder head, entered the mould insulation reaction 1.5-2.5 hour, cooling cooling, traction, last excision forming are the flat panel substrates of 1.5-5MM thickness.
The present patent application also provides the display screen with above-mentioned nanocomposite optical matrix material processing and fabricating, and described display screen is followed successively by light-absorption layer, optical waveguide layer, gain layer, filter layer, anti-dazzle photosphere according to distance light source order from the close-by examples to those far off, and the structure of each several part is as follows:
1, light-absorption layer: thickness is 40-50 μ m, evenly be coated with the rutile-phase nano titanium oxide of one deck acicular structure at optical waveguide layer towards surface of light source, the long 40nm of pin, wide 10nm carries out surface coated, addition is the 0.5-1% of coating total amount, be 1.49 also simultaneously with specific refractory power, the polymethacrylate type light diffusion hemisphere particle of median size 20um, addition is the 1-1.5% of coating total amount; Because the metallics that compacts fine and closely woven is formed light-absorption layer, and visible light and infrared light transmittance are surpassed 98%, their reflectivity are no more than 2%, can significantly improve the photo absorption performance of sheet material;
2, optical waveguide layer: the flat panel substrates that is obtained by above-mentioned technology constitutes, and thickness is the 1.5-5 millimeter;
3, gain layer: thickness is 10-15 μ m, optical waveguide layer on the inspection surface evenly the coating specific refractory power be 1.59, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-1 weight part, form rough surface, because even, the extremely close ball particulate and the refraction difference of base material are formed the lens jacket of a blast, thereby increase its angle of visibility and brightness;
4, filter layer: thickness is 10-15 μ m, be the nano silicon oxide microparticulate the Dark grey transparent resin mutually in and the filter layer that constitutes, even many porous nanos silicon oxide particle 0.3-1 part of coating median size 10 ± 5nm on gain layer; Because small ball particulate layer reflects away the overwhelming majority outside ultraviolet ray and infrared rays, transparent resin dyes to Dark grey in addition, the various surround lightings that come from the front are nearly all absorbed by complete black zone, and the light that transmits from behind can normally spread out of, light to inside can not produce interference, thereby possesses good anti-surround lighting effect;
5, anti-dazzle photosphere: thickness is 13-15 μ m, after being coated with filter layer, be coated with the anti-dazzle photosphere of one deck again, anti-dazzle photosphere is (to adopt emulsion polymerization in situ by median size at the PMMA/TiO2 of 75nm nano-complex particle, with the nano TiO 2 of handling through silane coupling agent, mix with the MMA monomer, synthetic PMMA/TiO2 nano-complex particle) 0.5 part, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-0.75 part is formed, can prevent the color albinism, has good anti-dazzle effect, its transmittance also is coated with one deck median size 30 ± 5 (nm) aluminium oxide particles (molecular formula Al simultaneously greater than 90%
2O
3) 0.2 weight part, can play self-cleaning net work energy.
The present patent application also requires to comprise the application of the display screen of above-mentioned nanocomposite optical matrix material processing and fabricating in screen display, LCD TV backlight module imaging system.
Described nanocomposite optical matrix material of the present patent application and the display screen of making thus, by starting material different proportioning and advanced production technique, in conjunction with five layers of microlens array structure of utilization, by mixing different nanoparticle and improve the mode of stack surface microstructure, realize absorption, gathering, transmission, conversion etc. to light.
Description of drawings
Fig. 1 is the cross-sectional view of the present patent application embodiment nanocomposite optical matrix material;
Fig. 2 is the present patent application embodiment polydispersion type light diffusion particle photo under electron microscope;
Fig. 3 is the structural representation of the present patent application embodiment gain layer;
Fig. 4 is the structural representation of the present patent application embodiment filter layer;
Fig. 5 does not add the nanoparticle curve of spectrum;
Fig. 6 adds the nanoparticle curve of spectrum;
Fig. 7 is the structural representation of the anti-dazzle photosphere of the present patent application embodiment;
Fig. 8 is the structural representation of the present patent application embodiment light-absorption layer;
Wherein, 1 is that light source, 2 is that light-absorption layer, 3 is that optical waveguide layer, 4 is that gain layer, 5 is that filter layer, 6 is anti-dazzle photosphere.
Embodiment
Below in conjunction with accompanying drawing described nanocomposite optical matrix material of patent application and its production and application is described; purpose is better to understand the described technical scheme of the present patent application for the public; rather than to the restriction of described technical scheme; in fact; with identical with the present patent application or proximate principle; to described nanocomposite optical matrix material; comprise masterbatch, base material; with its making method; and the structure of the display screen of making by above-mentioned base material; the increase and decrease of carrying out, replacement and improvement are all within the present patent application technical scheme required for protection.
Embodiment one
Masterbatch prescription one
The masterbatch of the described nanocomposite optical matrix material of the present patent application comprises the various components of following weight part:
1, the polyphosphazene polymer carbonic ether is 70 parts;
2, particle diameter is the toughner of the nucleocapsid structure of 0.3-0.35um, and its center is divinyl one styrenerubber, and shell is 8 parts of polymethylmethacrylates;
3, the benzotriazole photostabilizer is 0.15 part;
4, the ultra-high molecular weight polysiloxane is 0.3 part;
5, specific refractory power is 0.5 part of the light diffusion particle of 1.49 2.6-3.6um polymethacrylate type;
6, halogen-free environmental Sulfonates fire retardant is 0.1 part.
Embodiment two
Masterbatch prescription two
The masterbatch of the described nanocomposite optical matrix material of the present patent application comprises the various components of following weight part:
1, the polyphosphazene polymer carbonic ether is 90 parts;
2, the toughner of the nucleocapsid structure of particle diameter 0.3-0.35um, its center are divinyl one styrenerubbers, and shell is 5 parts of polymethylmethacrylates;
3, the benzotriazole photostabilizer is 0.6 part;
4, the ultra-high molecular weight polysiloxane is 0.1 part;
5, specific refractory power is 3.0 parts of the light diffusion particles of 1.49 2.6-3.6um polymethacrylate type;
6, halogen-free environmental Sulfonates fire retardant is 0.06 part.
Embodiment three
Masterbatch prescription three
The masterbatch of the described nanocomposite optical matrix material of the present patent application comprises the various components of following weight part:
1, the polyphosphazene polymer carbonic ether is 80 parts;
2, the toughner of the nucleocapsid structure of particle diameter 0.3-0.35um, its center are divinyl one styrenerubbers, and shell is 6.5 parts of polymethylmethacrylates;
3, the benzotriazole photostabilizer is 0.4 part;
4, the ultra-high molecular weight polysiloxane is 0.2 part;
5, specific refractory power is 2.0 parts of the light diffusion particles of 1.49 2.6-3.6um polymethacrylate type;
6, halogen-free environmental Sulfonates fire retardant is 0.08 part.
Embodiment four
Be example with the prescription described in the embodiment three below, the preparation method of described masterbatch is described, the preparation method of all the other prescriptions is similar with it, repeats no more;
1, with after the various raw materials pretreatment described in the embodiment three, heats separately, enter hopper jointly and stir to 200 ℃;
2, enter extrusion machine behind the uniform mixing and be warmed up to 290 ℃, material is by screw rod successive extruder head;
3, enter the typing in 2 hours of mould insulation reaction, be shaped to the base material embryonic plate of preset thickness through operations such as cooling cooling, traction, cuttings;
4, pass through disintegrating apparatus then, this embryonic plate is ground into 1 * 1 * 3 millimeters standard particle.
Embodiment five
Base material prescription one
The present patent application also provides the base material of above-mentioned nanocomposite optical matrix material, and described base material comprises masterbatch and light diffusion particle, and wherein, the weight part of each component is as described below:
1, masterbatch is 96 parts;
2, specific refractory power is that 1.49 median size is 1.5 parts of the light diffusion particles of the polymethacrylate type of 2.6-3.6um;
3, median size is 1 part of the light diffusion particle of the polymethacrylate type of 5.2-6.2um;
4, median size is 0.5 part of the light diffusion particle of the polymethacrylate type of 9.0-12um.
Embodiment six
Base material prescription two
The base material of stating comprises masterbatch and light diffusion particle, and wherein, the weight part of each component is as described below:
1, masterbatch is 99 parts;
2, specific refractory power is that 1.49 median size is 1 part of the light diffusion particle of the polymethacrylate type of 2.6-3.6um.
Embodiment seven
Base material prescription three
The base material of stating comprises masterbatch and light diffusion particle, and wherein, the weight part of each component is as described below:
1, masterbatch is 97 parts;
2, specific refractory power is that 1.49 median size is 1.2 parts of the light diffusion particles of the polymethacrylate type of 2.6-3.6um;
3, median size is 1.2 parts of the light diffusion particles of the polymethacrylate type of 5.2-6.2um;
4, median size is 0.7 part of the light diffusion particle of the polymethacrylate type of 9.0-12um.
Embodiment eight
The preparation method of base material:
With embodiment seven described prescriptions is example, and the preparation method of base material is described, the preparation method of all the other prescription base materials is similar with it, repeats no more;
1, the proportioning of embodiment seven described masterbatch and light diffusion particle is heated respectively to 200 ℃;
2, after above-mentioned masterbatch becomes melt, the light diffusion particle enters hopper again and stirs, and after the full and uniform mixing, enters extrusion machine, is warmed up to 290 ℃, by screw rod successive extruder head;
3, entered the mould insulation reaction 2 hours, cooling cooling, traction, last excision forming are the flat panel substrates of 1.5-5MM thickness.
Embodiment nine
The structure of nanocomposite optical matrix material:
By the nanocomposite optical matrix material that above-mentioned base material makes, the utilization five-layer structure specifically comprises: light-absorption layer, optical waveguide layer, gain layer, filter layer, anti-dazzle photosphere, as shown in Figure 1;
1, wherein, optical waveguide layer promptly is to be made by flat panel substrates, these light diffusion particles make that transmitted light constantly reflects between chemical particle and basic unit, reflection and scattering, can convert pointolite to area source, form the even diffusion effect of light, can significantly improve astigmatism to light, even photosensitiveness, aggregation and light conductivity, the electron micrograph of polydispersion type light diffusion particle wherein, as shown in Figure 2; Production technique is that it is heated 150 ℃-270 ℃ separately, after nanocomposite optical matrix material coatingparticles becomes melt, auxiliary material (light diffusion particle) enters hopper again and stirs, and after the full and uniform mixing, enters extrusion machine, be warmed up to 270 ℃-300 ℃, by screw rod successive extruder head, entered the mould insulation reaction 2 hours ± 0.5 hour, the cooling cooling, traction, last excision forming is the flat panel substrates (optical waveguide layer) of 1.5-5MM thickness;
2, gain layer 10-15 μ m: on the basis of original formulation, evenly being coated with specific refractory power in flat panel substrates (optical waveguide layer) above inspection surface is 1.59, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-1% weight part, form rough surface, owing to evenly, form the lens jacket of a blast to the refraction difference of close ball particulate and base material, thereby increase its angle of visibility and brightness, form gain layer, as shown in Figure 3;
3, filter layer 10-15 μ m, as shown in Figure 4, the filter layer that to be nano silicon oxide (molecular formula is SiOX) microparticulate constitute in mutually at the Dark grey transparent resin, on the basis of original formulation, on gain layer, evenly be coated with many porous nanos of median size 10 ± 5 (nm) silicon oxide particle 0.3-1% weight part, because small ball particulate layer reflects away the overwhelming majority outside ultraviolet ray and infrared rays; Transparent resin dyes to Dark grey in addition, and the various surround lightings that come from the front are nearly all absorbed by complete black zone; And the light that transmits from behind can normally spread out of, and can not produce interference to the light of inside, thereby possess good anti-surround lighting effect;
The surface of P type nano silicon oxide is contained many nanometer level microporous, and its porosity reaches 0.611ml/g; Many micropores average particle size 10 ± 5 (nm) specific surface area (640 ± 30m2/g) loose density (＜0.12g/cm
3) ultraviolet reflectivity (＞85%), strong to ultraviolet ray, infrared reflection ability because its The adsorbed hydroxyl content height (hydroxy radical content＞45%) after (need fully disperse), interference that can the most of surround lighting of virtual impedance;
As shown in Figure 5 and Figure 6, because the nanoparticle in the coating produces hole conduction, cause that the absorption of free carrier strengthens concentration, thereby show solar spectrum is had selectivity, promptly wavelength is at the visible region of 400-800nm, and the transmitance of filming reaches 82%; Wavelength is in the ultraviolet region less than 400nm, and the transmitance of filming reaches 15%; Wavelength is in the near-infrared region of 800-2500nm and since sun incident light frequency be higher than film in the vibrational frequency of nano conducting powders, caused the height reflection of its particle, measure the shielding iris action to being distributed in the sun power that this wave band accounts for about 50%;
4, as shown in Figure 7, anti-dazzle photosphere 13-15 μ m: after being coated with filter layer, be coated with the anti-dazzle photosphere of one deck again, anti-dazzle photosphere is (to adopt emulsion polymerization in situ by median size at the PMMA/TiO2 of 75nm nano-complex particle, with the nano TiO 2 of handling through silane coupling agent, mix with the MMA monomer, synthetic PMMA/TiO2 nano-complex particle) 0.5% weight part, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-0.75% weight part is formed, can prevent the color albinism, have good anti-dazzle effect, its transmittance greater than 90%.Also be coated with one deck median size 30 ± 5 (nm) aluminium oxide particles (molecular formula Al2O3) 0.2% weight part simultaneously.γ phase (crystalline phase) specific surface area (m2/g) 180 ± 30, density (0.2-0.4g/cm3).Can play self-cleaning net work energy;
5, as shown in Figure 8, light-absorption layer 40-50 μ m: on the basis of original formulation, (towards surface of light source) evenly is coated with rutile phase (crystal formation) nano-titanium oxide of one deck acicular structure again (molecular formula is TiO on optical waveguide layer
2) (outward appearance: the white loose specific surface area is long-pending: 160 ± 30m
2/ g), mean particle size: the long 40nm of pin, wide 10nm carries out surface coated.Addition is the 0.5-1% of coating total amount.Also select the polymethacrylate type light diffusion hemisphere particle (specific refractory power is 1.49) of median size 20um simultaneously for use, addition is 1-1.5%.,, visible light and infrared light transmittance are surpassed 98% because the metallics that compacts fine and closely woven is formed light-absorption layer.Their reflectivity are no more than 2%, can significantly improve the photo absorption performance of sheet material.
Embodiment ten
Described nano composite material of the present patent application and the comparison of the physical and chemical performance of optical screen and scattering screen (generally all making) on the market at present by vinylformic acid, shown in the table specific as follows:
The display screen that the present patent application obtains has excellent optical property, shows the following aspects specifically:
1, homogeneity is better: all can there be bright, the dark partially phenomenon all around in certain center in conventional screen, be common " solar effect ", and the described nano combined screen of the present patent application is evenly distributed in the whole prod owing to diffusion particle, brightness around can significantly improving improves whole display brightness homogeneity.Do not have " heat island " and reach " solar effect ";
2, brightness is higher: conventional screen all the not enough phenomenon of ubiquity brightness (brightness is too high, solar effect is obvious), need more powerful optical projection system, and nano composite material itself has high transparency, under the prerequisite that the product homogeneity ensures, transmittance reaches 60%-90%, so other screen of luminance factor is higher;
3, resolving power is meticulousr: the ordinary screen image quality is fuzzy, physical picture element point is thicker, and nano composite material is because picture plane is to be made of nanometer particle, effectively the imaging point distance is thin to 1/100 of ordinary screen, this just makes and shows that fine degree promotes tens of times, no matter is the commercial exhibition of document and form, or picture video, effect all reaches fine and smooth true to nature, and is clear incomparable;
4, contrast gradient is higher: the ordinary screen contrast gradient is on the low side, and color is ash partially, and the overall color degree is not full, and nano combined screen product integral color allotment suitably, have outstanding GTG, color range, can promote the color balance performance to greatest extent, make image fuller lively;
5, penetrating degree is more saturating: ordinary screen all can produce the vaporific sense of image fog, this is because the degree of atomization of its material own is higher, have 3.5%, and nano combined screen product degree of atomization has only 0.80%, has image stereoscopic sensation free from worldly cares, especially when showing dynamic video or picture, extremely strong gradation sense and depth feelings make image fresh and alive agile, life-like;
6, ghost image still less: be easy to generate overlapping when different light intensity is passed the Fresnel Lenses structure, especially big area shows acutance and high-contrast (as text display), the ghost image image is just more obvious, produce tangible Moire fringe (as shown below), and the lens arrangement of 5 layers of uniqueness of nano composite material utilization and the science of material color are handled, can significantly reduce the phenomenon of ghost image, make image true nature more;
7, anti-dazzle ability is strong: ordinary screen is subjected to the influence of surround lighting bigger, when especially extraneous light is brighter, is easy to generate extraneous diplopia on display surface, and is reflective strong.And nano composite material can reduce the color albinism because the surface has one deck anti-dazzle particle, has good anti-dazzle effect, and this characteristic makes screen possess superpower anti-ambient light interference ability;
8, the visual angle is more wide: the ordinary screen horizontal view angle is all bigger, can accomplish the 120-180 degree, but vertical angle is less than 80 degree, and nano composite material is because distinctive molecular composition and lens arrangement, on the basis that guarantees level angle 175 degree, also make vertical angle wider, can reach more than 90 degree;
9, yield rate height, the production efficiency of new nano composite material are higher; Its surperficial concentrically ringed Fresnel Lenses lines of the display screen that common material is made all is not quite similar, personalization is more serious, be inconvenient to produce in batches, scattering material is because the physical and chemical performance of its material own is relatively poor, have only a surperficial skim to play about diffuse-reflectance, difficult quality control, the scrap rate height; And matrix material is fit to large-scale mass production, so total production cost is lower.
The manufacturing technology of novel optical nano material of the present invention, by starting material different proportioning and advanced production technique, in conjunction with five layers of microlens array structure of utilization, by mixing different nanoparticle and improve the mode of stack surface microstructure, realization is to the absorption of light, gathering, transmission, conversion etc., in screen display, LCD TV backlight module imaging system, be widely used, on the especially big molded dimension important use arranged.
Claims (7)
1. the masterbatch of a nanocomposite optical matrix material, it is characterized in that: described masterbatch comprises the various components of following weight part:
1) polyphosphazene polymer carbonic ether 70-90 part;
2) toughner of the nucleocapsid structure of particle diameter 0.3-0.35um, its center are divinyl one styrenerubbers, and shell is polymethylmethacrylate 5-8 part;
3) benzotriazole photostabilizer 0.15-0.6 part;
4) ultra-high molecular weight polysiloxane 0.1-0.3 part;
5) specific refractory power is light diffusion particle 0.5-3.0 part of 1.49 2.6-3.6um polymethacrylate type;
6) halogen-free environmental Sulfonates fire retardant 0.06-0.1 part.
2. the manufacture craft of the described nanocomposite optical matrix material of claim 1 masterbatch, it is characterized in that: described manufacture craft comprises the steps:
1) with after the described various raw materials pretreatment of claim 1, heats separately, enter hopper jointly and stir to 150 ℃-270 ℃;
2) enter extrusion machine behind the uniform mixing and be warmed up to 270 ℃-300 ℃, material is by screw rod successive extruder head;
3) enter mould insulation reaction 1.5-2.5 hour typing, through cooling be cooled to room temperature 10-25 ℃, the operation through traction, cutting is shaped to the base material embryonic plate of preset thickness then;
4) pass through disintegrating apparatus then, this embryonic plate is ground into 1 * 1 * 3 millimeters standard particle.
3. the base material of the nanocomposite optical matrix material made from the described masterbatch of claim 1, it is characterized in that: described base material comprises above-mentioned masterbatch and light diffusion particle, wherein, the weight part of each component is as described below:
1) masterbatch 96-99 part;
2) specific refractory power is that 1.49 median size is light diffusion particle 1-1.5 part of the polymethacrylate type of 2.6-3.6um.
4. the base material of nanocomposite optical matrix material according to claim 3 is characterized in that: described base material also comprises:
1) median size is light diffusion particle 1-1.5 part of the polymethacrylate type of 5.2-6.2um;
2) median size is light diffusion particle 0.5-1.0 part of the polymethacrylate type of 9.0-12um.
5. the manufacture craft of claim 3 or 4 described base materials, it is characterized in that: described manufacture craft comprises the steps: above-mentioned masterbatch and light diffusion particle are heated respectively to 150 ℃-270 ℃, after above-mentioned masterbatch becomes melt, the light diffusion particle enters hopper again and stirs, after the full and uniform mixing, enter extrusion machine, be warmed up to 270 ℃-300 ℃, by screw rod successive extruder head, entered the mould insulation reaction 1.5-2.5 hour, cooling cooling, traction, last excision forming are the flat panel substrates of 1.5-5MM thickness.
6. by the display screen of the base material processing and fabricating of claim 3 or 4 described nanocomposite optical matrix materials, it is characterized in that: described display screen is followed successively by light-absorption layer, optical waveguide layer, gain layer, filter layer, anti-dazzle photosphere according to distance light source order from the close-by examples to those far off, and the structure of each several part is as follows:
1) light-absorption layer: thickness is 40-50 μ m, evenly be coated with the rutile-phase nano titanium oxide of one deck acicular structure at optical waveguide layer towards surface of light source, the long 40nm of pin, wide 10nm carries out surface coated, addition is the 0.5-1% of coating total amount, be 1.49 also simultaneously with specific refractory power, the polymethacrylate type light diffusion hemisphere particle of median size 20um, addition is the 1-1.5% of coating total amount;
2) optical waveguide layer: the flat panel substrates that is obtained by the described technology of claim 5 constitutes, and thickness is the 1.5-5 millimeter;
3) gain layer: thickness is 10-15 μ m, optical waveguide layer on the inspection surface evenly the coating specific refractory power be 1.59, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-1 weight part forms rough surface;
4) filter layer: thickness is 10-15 μ m, be the nano silicon oxide microparticulate the Dark grey transparent resin mutually in and the filter layer that constitutes, even many porous nanos silicon oxide particle 0.3-1 part of coating median size 10 ± 5nm on gain layer;
5) anti-dazzle photosphere: thickness is 13-15 μ m, after being coated with filter layer, be coated with the anti-dazzle photosphere of one deck again, anti-dazzle photosphere is 0.5 part of the PMMA/TiO2 of 75nm nano-complex particle by median size, median size 1.3-2.6um polymethacrylate type light diffusion particle 0.5-0.75 part is formed, and also is coated with one deck median size 30 ± 5nm aluminium oxide particles 0.2 weight part simultaneously.
7. the application of the described display screen of claim 6 in screen display, LCD TV backlight module imaging system.
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| CN114660883A (en) * | 2020-12-22 | 2022-06-24 | 宁波激智科技股份有限公司 | Ambient light resistant laser television screen and preparation method thereof |
| CN114660883B (en) * | 2020-12-22 | 2024-03-19 | 宁波激智科技股份有限公司 | Environment-light-resistant laser television screen and preparation method thereof |
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