CN105278014A - Solvent type UV optical diffusion film and preparation method thereof - Google Patents
Solvent type UV optical diffusion film and preparation method thereof Download PDFInfo
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- CN105278014A CN105278014A CN201510710043.3A CN201510710043A CN105278014A CN 105278014 A CN105278014 A CN 105278014A CN 201510710043 A CN201510710043 A CN 201510710043A CN 105278014 A CN105278014 A CN 105278014A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
Abstract
The invention relates to the technical field of optical thin films, and in particular relates to a solvent type UV optical diffusion film and a preparation method thereof. The solvent type UV optical diffusion film comprises a substrate layer and a diffusion layer which is bonded to one side of the substrate layer. The diffusion layer comprises diffusion particles which comprise large particle diffusion particles and small particle diffusion particles. The particle size of each large particle diffusion particle is 4 to 10 microns. The particle size of each small particle diffusion particle is 1 to 4 microns. According to the invention, the diffusion layer is used; the diffusion layer comprises the diffusion particles; the diffusion particles comprise large particle diffusion particles and small particle diffusion particles; large and small particle diffusion particles are in narrow particle size and single form distribution; a great light diffusion effect is realized; scattered light scattering is avoided; the requirement of light diffusion efficiency is met; great luminance is realized; a light source is effectively used; the degree of crosslinking of the diffusion particles is high; the diffusion particles are prevented from mutual aggregating or adhering; the uniformity of light diffusion is not affected; and the solvent type UV optical diffusion film has the advantages of scratch and abrasion resistance.
Description
Technical field
The present invention relates to optical film technology field, be specifically related to a kind of solvent-borne type UV optical diffusion and preparation method thereof.
Background technology
Along with the develop rapidly of flat-panel screens especially liquid crystal display industry, the manufacture craft of the optical diffusion of one of its parts is also upgrading day by day.In Modern Coating Technology, usually the method that optics diffusion particle is coated on face uniformly there are roller coat, spraying, dip-coating.Intaglio plate coating Chang Yinwei version wheel damage in tradition roller coat cause Diffusion barrier layer impaired, produce that repairing efficiency is long, coating wide cut is difficult to the problems such as control.
And the diffusion particle of existing optical diffusion is mixed in together at random, impact is caused on the overall scattering uniformity coefficient of diffusion barrier light, also can impact human visual for a long time.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of solvent-borne type UV optical diffusion, this solvent-borne type UV optical diffusion surface smoothing, glossy, the uniformity coefficient of diffusing light can not be affected, and there is good scratch resistance and wearing quality, also there is good light transmission and light diffusing.
The object of the present invention is to provide a kind of preparation method of solvent-borne type UV optical diffusion, this preparation method's technique is simple, convenient operation and control, steady quality, and production efficiency is high, and production cost is low, is applicable to large-scale industrial production.
Object of the present invention is achieved through the following technical solutions: a kind of solvent-borne type UV optical diffusion, comprise substrate layer and the diffusion layer fitting in substrate layer side, diffusion layer comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, the particle diameter of bulky grain diffusion particle is 4-10 μm, and the particle diameter of granule diffusion particle is 1-4 μm.Bulky grain diffusion particle and granule diffusion particle can individual layer be evenly distributed in substrate surface; Or bulky grain diffusion particle covers above little diffusion particle or below.
The present invention is by adopting diffusion layer, diffusion layer comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, bulky grain diffusion particle and granule diffusion particle all in narrow particle diameter, monomorphism distribution, to light, both there is good diffusion effect, be unlikely to again to make the scattering of light very at random, thus the requirement of light diffuser efficiency can be met and there is good briliancy, light source is effectively used; Meanwhile, diffusion particle degree of crosslinking is high, not easily assembles each other or adheres to, can not affect the uniformity coefficient of diffusing light, and have good scratch resistance and wearing quality.
Preferably, described substrate layer is PET film, PEN film, PC film, PP film or PVC film.The present invention, by adopting the above-mentioned film of transmittance as substrate layer, makes optical diffusion have good light transmission and light diffusing.Preferably, described substrate layer is PET film or PEN film.More preferred, described substrate layer is that transmittance is greater than 95%, mist degree lower than 3% PET film.
Described diffusion particle is at least one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle.The present invention, by adopting above-mentioned diffusion particle, meets the requirement of light diffuser efficiency and has good briliancy, light source is effectively used; The uniformity coefficient of diffusing light can not be affected, and there is good scratch resistance and wearing quality.
The coating density of described diffusion particle is 10
2-10
7individual/mm
2.The present invention passes through the coating density domination of diffusion particle 10
2-10
7individual/mm
2, the uniformity coefficient of diffusing light can not be affected, and there is good scratch resistance and wearing quality.Preferably, the coating density of described diffusion particle is 10
5individual/mm
2.
The thickness of described base material is 25-200 μm.The present invention by by the THICKNESS CONTROL of base material at 25-200 μm, make optical diffusion have good light transmission and light diffusing.Preferably, the thickness of described base material is 100 μm.
The thickness of described diffusion layer is 1-25 μm.The present invention by by the THICKNESS CONTROL of diffusion layer at 1-25 μm, the uniformity coefficient of diffusing light can not be affected.Preferably, the thickness of described diffusion layer is 12 μm.
Preferably, described diffusion layer is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for the 40%-85% of solvent-borne type UV glue general assembly (TW).Solvent-borne type UV glue of the present invention, by controlling at 40%-85% by the ratio of solvent, can not affect the uniformity coefficient of diffusing light, and have good scratch resistance and wearing quality.More preferred, solvent accounts for the 65%-75% of solvent-borne type UV glue general assembly (TW).
Preferably, described solvent is by least one in ethanol, butanols, ethyl acetate, butyl acetate, butanone, acetone, cyclohexanone, toluene and dimethylbenzene.The present invention is by adopting above-mentioned solvent, and its dissolution dispersity is good, makes the coating of diffusion layer more even.More preferred, the potpourri that described solvent is made up of with volume ratio 1.5-2.5:0.5-1.5:1 ethanol, ethyl acetate and acetone.
Preferably, described diffusion base-material is made up of the raw material of following weight portion:
Base resin 25-55 part
Activated monomer 40-60 part
Light trigger 1-7 part
Diffusion particle 5-40 part.
Diffusion base-material of the present invention is by adopting above-mentioned raw materials, and the strict weight proportion controlling each raw material, obtained diffusion base-material has good light transmission and light diffusing.
Preferably, described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.The present invention is by adopting resin based on acryl resin, and pentaerythritol acrylate as activated monomer, and adopts light trigger 1173 crosslinking curing, and obtained diffusion base-material has good light transmission and light diffusing.
Preferably, described diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, the particle diameter of bulky grain diffusion particle is 4-10 μm, and the particle diameter of granule diffusion particle is 1-4 μm, and the weight ratio of bulky grain diffusion particle and granule diffusion particle is 1:20-20:1.The present invention is by adopting bulky grain diffusion particle and granule diffusion particle, and to control its weight ratio be 1:20-20:1, to light, both there is good diffusion effect, be unlikely to again to make the scattering of light very at random, thus the requirement of light diffuser efficiency can be met and there is good briliancy, light source is effectively used.
Preferably, described diffusion particle is at least one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle, and the coating density of diffusion particle is 10
2-10
7individual/mm
2.The present invention is by adopting above-mentioned diffusion particle, and degree of crosslinking is high, not easily assembles each other or adheres to, can not affect the uniformity coefficient of diffusing light, and have good scratch resistance and wearing quality.More preferred, the potpourri that described diffusion particle is made up of with weight ratio 2-4:1.4-2.2:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer, obtained solvent-borne type UV optical diffusion.
Preparation method's technique of the present invention is simple, convenient operation and control, steady quality, and production efficiency is high, and production cost is low, is applicable to large-scale industrial production.
Preferably, described coating adopts nick roller coat cloth.Diffusion layer of the present invention is formed through nick roller coat cloth by adopting solvent-borne type UV glue, and have easy operation, coat weight ranges is wide, saves base material, the thickness wide accommodation of base material, is coated with apparent existing property good, surface smoothing, the advantage such as glossy.The diffusion particle mode be coated on uniformly on face in this solvent-borne type UV glue there are roller coat, spraying and dip-coating etc.
The mode of solvent-borne type UV adhesive curing that the present invention adopts adopt oven dried and high-pressure sodium lamp UV radiation mixing cured.Can first make system surface fast qualitative reach surface drying with photocuring, then utilize heat curing to make floor portions completion of cure; Also can place under high temperature or middle temperature now, solvent be volatilized, then irradiates under being placed on uviol lamp.
The temperature of described baking oven is 50-200 DEG C, and drying time is 1-5min.The present invention, by controlling at 50-200 DEG C by the temperature of baking oven, controls at 1-5min drying time, and its heat curing is effective, and obtained optical diffusion has good scratch resistance and wearing quality.
The ultraviolet lighting intensity of described high-pressure sodium lamp is 200-2000mJ/cm
2, radiated time is 5-60s.The present invention passes through the ultraviolet lighting strength control of high-pressure sodium lamp at 200-2000mJ/cm
2, radiated time controls at 5-60s, and its photocuring is effective, and obtained optical diffusion has good scratch resistance and wearing quality.
Beneficial effect of the present invention is: the present invention is by adopting diffusion layer, diffusion layer comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, bulky grain diffusion particle and granule diffusion particle all in narrow particle diameter, monomorphism distribution, to light, both there is good diffusion effect, be unlikely to again to make the scattering of light very at random, thus the requirement of light diffuser efficiency can be met and there is good briliancy, light source is effectively used; Meanwhile, diffusion particle degree of crosslinking is high, not easily assembles each other or adheres to, can not affect the uniformity coefficient of diffusing light, and have good scratch resistance and wearing quality.
Diffusion layer of the present invention is formed through nick roller coat cloth by adopting solvent-borne type UV glue, and have easy operation, coat weight ranges is wide, saves base material, the thickness wide accommodation of base material, is coated with apparent existing property good, surface smoothing, the advantage such as glossy.
Solvent-borne type UV optical diffusion surface smoothing of the present invention, glossy, the uniformity coefficient of diffusing light can not be affected, and there is good scratch resistance and wearing quality, also there is good light transmission and light diffusing.
Solvent-borne type UV optical diffusion of the present invention has the transmittance up to more than 90% and the mist degree up to more than 30%, therefore has good light transmission and light diffusing.
Accompanying drawing explanation
Fig. 1 is partial sectional view of the present invention;
Reference numeral is: 1-substrate layer, 2-diffusion layer, 21-bulky grain diffusion particle, 22-granule diffusion particle.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing 1, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment 1
See Fig. 1, a kind of solvent-borne type UV optical diffusion, comprise substrate layer 1 and the diffusion layer 2 fitting in substrate layer 1 side, diffusion layer 2 comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 4 μm, and the particle diameter of granule diffusion particle 22 is 1 μm.
Described substrate layer 1 for transmittance be greater than 95%, mist degree lower than 3% PET film; Described diffusion particle is any one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle; The coating density of described diffusion particle is 10
2individual/mm
2; The thickness of described base material is 25 μm; The thickness of described diffusion layer 2 is 1 μm.
Described diffusion layer 2 is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for 40% of solvent-borne type UV glue general assembly (TW).
Described solvent is by any one in ethanol, butanols, ethyl acetate, butyl acetate, butanone, acetone, cyclohexanone, toluene and dimethylbenzene.
Described diffusion base-material is made up of the raw material of following weight portion:
Base resin 25 parts
Activated monomer 40 parts
Light trigger 1 part
Diffusion particle 5 parts.
Described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
Described diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, and the particle diameter of bulky grain diffusion particle 21 is 4 μm, and the particle diameter of granule diffusion particle 22 is 1 μm, and the weight ratio of bulky grain diffusion particle 21 and granule diffusion particle 22 is 1:20.
Described diffusion particle is any one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle, and the coating density of diffusion particle is 10
2individual/mm
2.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer 1, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer 2, obtained solvent-borne type UV optical diffusion.
Described coating adopts nick roller coat cloth; The temperature of described baking oven is 50 DEG C, and drying time is 5min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 200mJ/cm
2, radiated time is 60s.
Embodiment 2
A kind of solvent-borne type UV optical diffusion, comprise substrate layer 1 and the diffusion layer 2 fitting in substrate layer 1 side, diffusion layer 2 comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 6 μm, and the particle diameter of granule diffusion particle 22 is 2 μm.
Described substrate layer 1 is PEN film; Described diffusion particle is the potpourri of any two kinds of compositions in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle; The coating density of described diffusion particle is 10
3individual/mm
2; The thickness of described base material is 50 μm; The thickness of described diffusion layer 2 is 5 μm.
Described diffusion layer 2 is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for 50% of solvent-borne type UV glue general assembly (TW).
Described solvent is by any two kinds of potpourris formed in ethanol, butanols, ethyl acetate, butyl acetate, butanone, acetone, cyclohexanone, toluene and dimethylbenzene.
Described diffusion base-material is made up of the raw material of following weight portion:
Base resin 30 parts
Activated monomer 45 parts
Light trigger 3 parts
Diffusion particle 10 parts.
Described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
Described diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, and the particle diameter of bulky grain diffusion particle 21 is 6 μm, and the particle diameter of granule diffusion particle 22 is 2 μm, and the weight ratio of bulky grain diffusion particle 21 and granule diffusion particle 22 is 1:10.
Described diffusion particle is the potpourri of any two kinds of compositions in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle, and the coating density of diffusion particle is 10
3individual/mm
2.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer 1, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer 2, obtained solvent-borne type UV optical diffusion.
Described coating adopts nick roller coat cloth; The temperature of described baking oven is 80 DEG C, and drying time is 4min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 500mJ/cm
2, radiated time is 40s.
Embodiment 3
A kind of solvent-borne type UV optical diffusion, comprise substrate layer 1 and the diffusion layer 2 fitting in substrate layer 1 side, diffusion layer 2 comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 7 μm, and the particle diameter of granule diffusion particle 22 is 2.5 μm.
The potpourri that described diffusion particle is made up of with weight ratio 2:1.4:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle; The coating density of described diffusion particle is 10
5individual/mm
2; The thickness of described base material is 120 μm; The thickness of described diffusion layer 2 is 15 μm.
Described diffusion layer 2 is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for 60% of solvent-borne type UV glue general assembly (TW).
The potpourri that described solvent is made up of with volume ratio 1.5:0.5:1 ethanol, ethyl acetate and acetone.
Described diffusion base-material is made up of the raw material of following weight portion:
Base resin 40 parts
Activated monomer 50 parts
Light trigger 4 parts
Diffusion particle 20 parts.
Described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
Described diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 7 μm, the particle diameter of granule diffusion particle 22 is 2.5 μm, and the weight ratio of bulky grain diffusion particle 21 and granule diffusion particle 22 is 1:1.
The potpourri that described diffusion particle is made up of with weight ratio 2:1.4:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle, the coating density of diffusion particle is 10
5individual/mm
2.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer 1, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer 2, obtained solvent-borne type UV optical diffusion.
Described coating adopts nick roller coat cloth; The temperature of described baking oven is 120 DEG C, and drying time is 3min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 1000mJ/cm
2, radiated time is 30s.
Embodiment 4
A kind of solvent-borne type UV optical diffusion, comprise substrate layer 1 and the diffusion layer 2 fitting in substrate layer 1 side, diffusion layer 2 comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 8 μm, and the particle diameter of granule diffusion particle 22 is 3 μm.
The potpourri that described diffusion particle is made up of with weight ratio 3:1.8:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle; The coating density of described diffusion particle is 10
6individual/mm
2; The thickness of described base material is 160 μm; The thickness of described diffusion layer 2 is 20 μm.
Described diffusion layer 2 is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for 70% of solvent-borne type UV glue general assembly (TW).
The potpourri that described solvent is made up of with volume ratio 2:1:1 ethanol, ethyl acetate and acetone.
Described diffusion base-material is made up of the raw material of following weight portion:
Base resin 45 parts
Activated monomer 55 parts
Light trigger 5 parts
Diffusion particle 30 parts.
Described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
Described diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, and the particle diameter of bulky grain diffusion particle 21 is 8 μm, and the particle diameter of granule diffusion particle 22 is 3 μm, and the weight ratio of bulky grain diffusion particle 21 and granule diffusion particle 22 is 10:1.
The potpourri that described diffusion particle is made up of with weight ratio 3:1.8:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle, the coating density of diffusion particle is 10
6individual/mm
2.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer 1, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer 2, obtained solvent-borne type UV optical diffusion.
Described coating adopts nick roller coat cloth; The temperature of described baking oven is 160 DEG C, and drying time is 2min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 1500mJ/cm
2, radiated time is 20s.
Embodiment 1
A kind of solvent-borne type UV optical diffusion, comprise substrate layer 1 and the diffusion layer 2 fitting in substrate layer 1 side, diffusion layer 2 comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 10 μm, and the particle diameter of granule diffusion particle 22 is 4 μm.
The potpourri that described diffusion particle is made up of with weight ratio 4:2.2:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle; The coating density of described diffusion particle is 10
7individual/mm
2; The thickness of described base material is 200 μm; The thickness of described diffusion layer 2 is 25 μm.
Described diffusion layer 2 is coated with by solvent-borne type UV glue to be formed, and described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for 85% of solvent-borne type UV glue general assembly (TW).
The potpourri that described solvent is made up of with volume ratio 2.5:1.5:1 ethanol, ethyl acetate and acetone.
Described diffusion base-material is made up of the raw material of following weight portion:
Base resin 55 parts
Activated monomer 60 parts
Light trigger 7 parts
Diffusion particle 40 parts.
Described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
Described diffusion particle comprises bulky grain diffusion particle 21 and granule diffusion particle 22, the particle diameter of bulky grain diffusion particle 21 is 10 μm, the particle diameter of granule diffusion particle 22 is 4 μm, and the weight ratio of bulky grain diffusion particle 21 and granule diffusion particle 22 is 20:1.
The potpourri that described diffusion particle is made up of with weight ratio 4:2.2:1 silicon dioxide granule, polymethylmethacrylate particle and organosiloxane particle, the coating density of diffusion particle is 10
7individual/mm
2.
A kind of preparation method of solvent-borne type UV optical diffusion, get a base material as substrate layer 1, solvent-borne type UV glue is coated on base material uniformly, adopt oven drying and high-pressure sodium lamp UV radiation to carry out mixing cured, form diffusion layer 2, obtained solvent-borne type UV optical diffusion.
Described coating adopts nick roller coat cloth; The temperature of described baking oven is 200 DEG C, and drying time is 1min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 2000mJ/cm
2, radiated time is 5s.
Solvent-borne type UV optical diffusion surface smoothing of the present invention, glossy, the uniformity coefficient of diffusing light can not be affected, and there is good scratch resistance and wearing quality, also there is good light transmission and light diffusing.
Solvent-borne type UV optical diffusion of the present invention has the transmittance up to more than 90% and the mist degree up to more than 30%, therefore has good light transmission and light diffusing.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a solvent-borne type UV optical diffusion, it is characterized in that: comprise substrate layer and the diffusion layer fitting in substrate layer side, diffusion layer comprises diffusion particle, diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, the particle diameter of bulky grain diffusion particle is 4-10 μm, and the particle diameter of granule diffusion particle is 1-4 μm.
2. a kind of solvent-borne type UV optical diffusion according to claim 1, is characterized in that: described substrate layer is PET film, PEN film, PC film, PP film or PVC film; Described diffusion particle is at least one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle; The coating density of described diffusion particle is 10
2-10
7individual/mm
2; The thickness of described base material is 25-200 μm; The thickness of described diffusion layer is 1-25 μm.
3. a kind of solvent-borne type UV optical diffusion according to claim 1, it is characterized in that: described diffusion layer is coated with by solvent-borne type UV glue to be formed, described solvent-borne type UV glue obtains by spreading after base-material mixes with solvent, and wherein, solvent accounts for the 40%-85% of solvent-borne type UV glue general assembly (TW).
4. a kind of solvent-borne type UV optical diffusion according to claim 3, is characterized in that: described solvent is by least one in ethanol, butanols, ethyl acetate, butyl acetate, butanone, acetone, cyclohexanone, toluene and dimethylbenzene.
5. a kind of solvent-borne type UV optical diffusion according to claim 3, is characterized in that: described diffusion base-material is made up of the raw material of following weight portion:
Base resin 25-55 part
Activated monomer 40-60 part
Light trigger 1-7 part
Diffusion particle 5-40 part.
6. a kind of solvent-borne type UV optical diffusion according to claim 5, is characterized in that: described base resin is acryl resin; Described activated monomer is pentaerythritol acrylate; Described light trigger is light trigger 1173.
7. a kind of solvent-borne type UV optical diffusion according to claim 5, it is characterized in that: described diffusion particle comprises bulky grain diffusion particle and granule diffusion particle, the particle diameter of bulky grain diffusion particle is 4-10 μm, the particle diameter of granule diffusion particle is 1-4 μm, and the weight ratio of bulky grain diffusion particle and granule diffusion particle is 1:20-20:1.
8. a kind of solvent-borne type UV optical diffusion according to claim 5, it is characterized in that: described diffusion particle is at least one in silicon dioxide granule, calcium carbonate particle, TiO 2 particles, polymethylmethacrylate particle, polystyrene particle, polycarbonate particle and organosiloxane particle, the coating density of diffusion particle is 10
2-10
7individual/mm
2.
9. the preparation method of a kind of solvent-borne type UV optical diffusion as described in any one of claim 3-8, it is characterized in that: get a base material as substrate layer, solvent-borne type UV glue is coated on base material uniformly, oven drying and high-pressure sodium lamp UV radiation is adopted to carry out mixing cured, form diffusion layer, obtained solvent-borne type UV optical diffusion.
10. the preparation method of a kind of solvent-borne type UV optical diffusion according to claim 9, is characterized in that: described coating adopts nick roller coat cloth; The temperature of described baking oven is 50-200 DEG C, and drying time is 1-5min; The ultraviolet lighting intensity of described high-pressure sodium lamp is 200-2000mJ/cm
2, radiated time is 5-60s.
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| CN106249326A (en) * | 2016-07-11 | 2016-12-21 | 浙江元泰特种膜有限公司 | Optical film producing method is spread in one |
| CN106467643A (en) * | 2016-08-18 | 2017-03-01 | 徐英豪 | The application in PVC calendered film of silicon powder and titanium white compound powder |
| CN106526727A (en) * | 2016-12-23 | 2017-03-22 | 合肥乐凯科技产业有限公司 | High-brightness high-haze composite optical plate |
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