CN102295833B - 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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- CN102295833B CN102295833B CN2011101581821A CN201110158182A CN102295833B CN 102295833 B CN102295833 B CN 102295833B CN 2011101581821 A CN2011101581821 A CN 2011101581821A CN 201110158182 A CN201110158182 A CN 201110158182A CN 102295833 B CN102295833 B CN 102295833B
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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 nano optical composite material and its preparation method 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.Diffuse reflection 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 18 th Century French researchist Mores at first find, from technical standpoint, Moire fringe is the visual results of interfering with constant angle and Frequency generated 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 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 comprised of a vinyl and a carboxyl.Pure vinylformic acid is achromaticity and clarification liquid, is with characteristic irritating smell.It can dissolve each other with water, alcohol, ether and chloroform, is to be prepared by the propylene that obtains from refinery.Vinylformic acid is because its physicals is excellent not, the screen of its making also inevitably exist above-mentioned poor definition, solar effect obviously, the defective such as low lightness, Moire fringe is obvious.
Summary of the invention
The present patent application namely is the defects 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 outward 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 nano optical composite 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 the broad varietys such as aliphatics, aromatic series, aliphatic-aromatic, the polycarbonate water white transparency, heat-resisting, shock resistance, fire-retardant BI level has good mechanical property in common use temperature.Compare near polymethylmethacrylate with performance, the impact resistance of polycarbonate is good, and specific refractory power is high, good processability.
The toughner of the nucleocapsid structure of particle diameter 0.3-0.35um can make material have equally excellent toughness below-30 ℃, 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 occurs; 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 nano optical composite material masterbatch of the present patent application, as described below:
1, with after the above-mentioned various raw materials pretreatment, heat separately to 150 ℃-270 ℃, jointly enter hopper and stir;
2, enter extrusion machine after even the mixing and be warmed up to 270 ℃-300 ℃, material is by the continuous extruder head of screw rod;
3, enter mould insulation reaction 1.5-2.5 hour typing, through cooling down to room temperature 10-25 ℃, then the operation through traction, cutting is shaped to the base material embryonic plate of preset thickness; Wherein, the base material embryonic plate that draws, is cut into preset thickness all is the Technology of the maturation that has first, repeats no more here;
4, then pass through disintegrating apparatus, this embryonic plate is ground into 1 * 1 * 3 millimeters standard particle.
The present patent application also provides the base material of above-mentioned nano optical composite 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 the continuous extruder head of screw rod, entered the mould insulation reaction 1.5-2.5 hour, cooling down, 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 nano optical composite 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 with specific refractory power also simultaneously, 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 forms 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 technique consists of, 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, extremely close ball particulate and the refraction difference of base material form 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 consists of, 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 zone that the various surround lightings that come from the front are nearly all deceived entirely absorbs, 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 painted with filter layer, be coated with again the anti-dazzle photosphere of one deck, 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 processing 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 forms, 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 the self-cleaning function.
The present patent application requires also to comprise that the display screen of above-mentioned nano optical composite material processing and fabricating is in the application of screen display, LCD TV backlight module imaging system.
The described nano optical composite 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 use five layers of microlens array structure, by mixing different nanoparticle and improve the mode of stack surface microstructure, realize Optical Absorption, gathering, transmission, conversion etc.
Description of drawings
Fig. 1 is the cross-sectional view of the present patent application embodiment nano optical composite 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 nano optical composite material of patent application and its preparation method 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 the principle identical or approximate with the present patent application; to described nano optical composite material; comprise masterbatch, base material; with its making method; and the structure of the display screen of being made 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 nano optical composite 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 nano optical composite 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 nano optical composite 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
The below illustrates the preparation method of described masterbatch take the prescription described in the embodiment three as example, and 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 to 200 ℃, jointly enter hopper and stir;
2, enter extrusion machine after even the mixing and be warmed up to 290 ℃, material is by the continuous extruder head of screw rod;
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 down, traction, cuttings;
4, then pass through disintegrating apparatus, 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 nano optical composite 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:
Take embodiment seven described prescriptions as example, 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 the continuous extruder head of screw rod;
3, entered the mould insulation reaction 2 hours, cooling down, traction, last excision forming are the flat panel substrates of 1.5-5MM thickness.
Embodiment nine
The structure of nano optical composite material:
Nano optical composite material by above-mentioned base material makes uses 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 namely 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 the nano optical composite 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 the continuous extruder head of screw rod, entered the mould insulation reaction 2 hours ± 0.5 hour, cooling down, 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, forming 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 consist of 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 zone that the various surround lightings that come from the front are nearly all deceived entirely absorbs; 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 particle with pores median 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 adsorbed hydroxyl content high (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, namely 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, because sun incident light frequency is higher than the vibrational frequency of the middle nano conducting powders of filming, caused the height reflection of its particle, measures 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 painted with filter layer, be coated with again the anti-dazzle photosphere of one deck, 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 processing 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 forms, can prevent the color albinism, have good anti-dazzle effect, its transmittance is greater than 90%.Also be coated with simultaneously one deck median size 30 ± 5 (nm) aluminium oxide particles (molecular formula Al2O3) 0.2% weight part.γ phase (crystalline phase) specific surface area (m2/g) 180 ± 30, density (0.2-0.4g/cm3).Can play the self-cleaning function;
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 Type (crystal formation) nano-titanium oxide of one deck acicular structure again (molecular formula is TiO on optical waveguide layer
2) (outward appearance: white loose Specific Surface Area Measurement: 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 simultaneously the polymethacrylate type light diffusion hemisphere particle (specific refractory power is 1.49) of median size 20um, addition is 1-1.5%., because the metallics that compacts fine and closely woven forms light-absorption layer, 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.
Embodiment ten
The described nano composite material of the present patent application and the at present on the market comparison of the physical and chemical performance of optical screen and scattering screen (generally all being made by vinylformic acid), shown in the table specific as follows:
The display screen that the present patent application obtains has excellent optical property, shows specifically the following aspects:
1, homogeneity is better: conventional screen can exist all that certain center is bright, partially dark phenomenon all around, be common " solar effect ", and the described nano combined screen of the present patent application is evenly distributed in the whole product owing to diffusion particle, brightness around can significantly improving improves whole display brightness homogeneity.Reach " solar effect " without " heat island ";
2, brightness is higher: conventional screen all the inadequate 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 imaging point is apart from thin to 1/100 of ordinary screen, this just makes and shows that fine degree promotes decades 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 to greatest extent the color balance performance, 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 only has 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: easily overlap when different light intensity is passed Fresnel lens structure, especially large-area displays acutance and high-contrast (such as text display), the ghost image image is just more obvious, produce obvious Moire fringe (as shown below), and nano composite material uses the lens arrangement of 5 layers of uniqueness and the science of material color to process, can greatly reduce the phenomenon of ghost image, make more true nature of image;
7, anti-dazzle ability is strong: ordinary screen is subjected to the impact of surround lighting larger, when especially extraneous light is brighter, easily produces 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 larger, 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, the yield rate of new nano composite material is high, production efficiency is 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, only have a surperficial skim to play about diffuse-reflectance, difficult quality control, scrap rate is high; And matrix material is fit to large-scale mass production, therefore 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 use five layers of microlens array structure, by mixing different nanoparticle and improve the mode of stack surface microstructure, realization is to Optical Absorption, gathering, transmission, conversion etc., in screen display, LCD TV backlight module imaging system, be widely used, on the especially large molded dimension important application arranged.
Claims (7)
1. the masterbatch of a nano optical composite material, it is characterized in that: described masterbatch comprises the various components of following weight part:
1) polyphosphazene polymer carbonic ether 70-90 part take-O-(C6H4)-C (CH3) 2-(C6H4)-O-CO-as repeating unit;
2) toughner of the nucleocapsid structure of particle diameter 0.3-0.35 μ m, 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 the TiO 2 particles polymethacrylate type of 1.49 2.6-3.6 μ m;
6) halogen-free environmental Sulfonates fire retardant 0.06-0.1 part.
2. the manufacture craft of nano optical composite material masterbatch claimed in claim 1, it is characterized in that: described manufacture craft comprises the steps:
1) with after the various raw materials pretreatment claimed in claim 1, heat separately to 150 ℃-270 ℃, jointly enter hopper and stir;
2) enter extrusion machine after evenly mixing and be warmed up to 270 ℃-300 ℃, material is by screw rod extruder head continuously;
3) enter mould insulation reaction 1.5-2.5 hour typing, through cooling down to room temperature 10-25 ℃, then the operation through traction, cutting is shaped to the base material embryonic plate of preset thickness;
4) then pass through disintegrating apparatus, this embryonic plate is ground into 1 * 1 * 3 millimeters standard particle.
3. the base material of the nano optical composite material made from masterbatch claimed in 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 light diffusion particle 1-1.5 part of the TiO 2 particles polymethacrylate type of 1.49 2.6-3.6 μ m.
4. the base material of nano optical composite material according to claim 3, it is characterized in that: described base material also comprises:
1) median size is light diffusion particle 1-1.5 part of the TiO 2 particles polymethacrylate type of 5.2-6.2 μ m;
2) median size is light diffusion particle 0.5-1.0 part of the TiO 2 particles polymethacrylate type of 9.0-12 μ m.
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 extruder head continuously, entered the mould insulation reaction 1.5-2.5 hour, cooling down, 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 nano optical composite 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 with specific refractory power also simultaneously, the TiO 2 particles polymethacrylate type light diffusion hemisphere particle of median size 20 μ m, addition is the 1-1.5% of coating total amount;
2) optical waveguide layer: the flat panel substrates that is obtained by the described technique of claim 5 consists of, 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, the TiO 2 particles polymethacrylate type light diffusion particle 0.5-1 weight part of median size 1.3-2.6 μ m 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 consists of, 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 painted with filter layer, be coated with again the anti-dazzle photosphere of one deck, anti-dazzle photosphere is 0.5 part of the PMMA/TiO2 of 75nm nano-complex particle by median size, median size 1.3-2.6 μ m TiO 2 particles polymethacrylate type light diffusion particle 0.5-0.75 part forms, and also is coated with simultaneously one deck median size 30 ± 5nm aluminium oxide particles 0.2 weight part.
7. the application of display screen claimed in claim 6 in screen display, LCD TV backlight module imaging system.
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| CN103424867B (en) * | 2012-05-24 | 2017-02-22 | 南京灿华光电设备有限公司 | Nanometer uniform light transmission display part |
| CN103309082B (en) * | 2013-06-09 | 2016-09-28 | 信利半导体有限公司 | A kind of normally white liquid crystal indicator |
| CN103486481A (en) * | 2013-10-10 | 2014-01-01 | 东莞市常平大京九高聚物导电静电研究中心 | High-heat-dissipation insulation full-plastic covering fluorescent lamp tube and production equipment and production method thereof |
| CN103605235B (en) * | 2013-11-29 | 2016-08-24 | 信利半导体有限公司 | A kind of Normally-white liquid crystal display device and cover plate thereof |
| WO2015089708A1 (en) * | 2013-12-16 | 2015-06-25 | GE Lighting Solutions, LLC | Optical components with surface micro/nano structure based on fluoro-acrylate material |
| CN103897189B (en) * | 2014-04-02 | 2016-08-24 | 长兴化学材料(珠海)有限公司 | A kind of polysiloxanes microballoon with core shell structure and preparation method thereof |
| CN105243965A (en) * | 2015-10-27 | 2016-01-13 | 巨洋神州（苏州）数字技术有限公司 | Optical splicing display screen and installation method thereof |
| CN105385138A (en) * | 2015-12-07 | 2016-03-09 | 昆山幻彩塑胶科技有限公司 | Anti-dazzle PC material with high impact resistant performance |
| CN105670149A (en) * | 2016-02-23 | 2016-06-15 | 东莞轩朗实业有限公司 | Photodiffusion master batch and photodiffusion plate containing the same |
| CN110970479A (en) * | 2019-12-12 | 2020-04-07 | 捷开通讯(深圳)有限公司 | Display screen and terminal |
| 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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| US7718733B2 (en) * | 2004-12-20 | 2010-05-18 | Sabic Innovative Plastics Ip B.V. | Optically clear polycarbonate polyester compositions |
| DE102005040315A1 (en) * | 2005-08-24 | 2007-03-01 | Bayer Materialscience Ag | High brightness light scattering antistatic plastic composition and its use in flat panel displays |
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