CN109031486A - A kind of optical diffusion and preparation method thereof - Google Patents
A kind of optical diffusion and preparation method thereof Download PDFInfo
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- CN109031486A CN109031486A CN201810882242.6A CN201810882242A CN109031486A CN 109031486 A CN109031486 A CN 109031486A CN 201810882242 A CN201810882242 A CN 201810882242A CN 109031486 A CN109031486 A CN 109031486A
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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Abstract
The invention belongs to optical film technology fields, and in particular to a kind of optical diffusion and preparation method thereof, the preparation method includes: the preparation of (1) light diffusion particle；(2) light diffusion particle is mixed with nylon particle, the pure and mild curing agent of polyester polyols is added, is mixed to get lower coating composition；Light diffusion particle is mixed with PMMA particle, the pure and mild curing agent of polyester polyols is added, is mixed to get coating composition；(3) lower coating composition, coating composition are successively coated on to the two sides of PET base material, obtain optical diffusion；The present invention in bergmeal particle by introducing glass micro mist, it is blown in balling furnace Flame, so that glass micro mist melts in situ in the pore structure of bergmeal particle, glass micro mist after the melting can not only support the pore structure of bergmeal particle, multipath reflection, refraction can also be carried out to light, to while meeting light diffusion particle excellent coverings performance, the light transmission of raising light diffusion particle.
Description
Technical field
The invention belongs to optical film technology fields, and in particular to a kind of optical diffusion and preparation method thereof.
Background technique
Backlight module (BLU) is usually made of reflector plate, light guide plate, optical film (diffusion barrier, brightness enhancement film).Wherein, optics
Diffusion barrier plays an important role in LCD backlight module displays device, and linear light sources are mainly uniformly changed into one
Even area source；In general, optical diffusion includes substrate, front light diffusion layer and back side antiblocking layers.Diffusion layer and anti-sticking
It all include generally resin film forming matter, light diffusion particle and auxiliary agent in layer.In the prior art, light diffusion particle generallys use
It is prepared by the mode that bright polymeric matrix resins are blended with light diffusion microsphere particles.Wherein, light diffusion microsphere particles include inorganic
Particle, such as SiO2, BaSO4 and organic polymer microparticles, such as acrylic compounds crosslinked microsphere, polystyrene (PS), silicone resin
Deng, it still, since inorganic particulate surface is more sharp, is easy to scratch photodiffusion material, its optical property is caused to be affected, so
Organic polymeric microspheres used as light diffusion particle it is relatively broad, specifically, such as PMMA, PBMA, PA, PU, PS are normal
Organic polymeric microspheres.These diffusion principles that common are machine polymer microballoon are, when light diameter of being expert at is met on the way
When to two different media of refractive index, the physical phenomenon of refraction, reflection and scattering occurs, by adding light in thin-film material
Diffusion particle is adjusted by travelling route of the light diffusion particle to light, achievees the purpose that disperse light.
It is worth noting that, be still a conflicting problem between the light transmittance and mist degree of optical diffusion so far,
In the case where light transmittance height, mist degree is necessarily low, leads to not meet preferable light source shielding, and when mist degree is high, thoroughly
Light rate will necessarily be lower, and brightness is caused to reduce.
Summary of the invention
For the problems of the prior art, the purpose of the present invention is to provide a kind of preparation method of optical diffusion, systems
Standby obtained optical diffusion is while meeting high covering with excellent light transmission.
To achieve the goals above, the present invention is achieved by the following scheme:
A kind of preparation method of optical diffusion, comprising the following steps:
(1) preparation of light diffusion particle
(1.1) it is added acid solution into diatomite, is filtered after immersion treatment and elutes 2~3 times with deionized water, then
It is dried, grinds micronization processes, obtains bergmeal particle；
(1.2) organic solvent is added in the bergmeal particle being prepared in step (1.1), is then added while stirring
Glass micro mist, then ultrasonic disperse handles 30~60min；Obtain mixture A；
(1.3) flame injecting mixed object A is used in balling furnace, obtains the light diffusion particle；
(2) above-mentioned smooth diffusion particle is mixed with nylon particle, is subsequently added into the pure and mild curing agent of polyester polyols, is stirred
Uniformly, the lower coating composition for optical diffusion is obtained；
Above-mentioned smooth diffusion particle is mixed with PMMA particle, is subsequently added into the pure and mild curing agent of polyester polyols, is stirred
It is even, obtain the coating composition for optical diffusion；
(3) lower coating composition, coating composition are successively coated on to the two sides of PET base material, obtain the optics
Diffusion barrier.
Heretofore described diatomite is a kind of biogenic siliceous sedimentary rock, it is mainly by the remains of ancient times diatom
It is formed, chemical component is mainly with SiO2Based on, contain a small amount of Al2O3、Fe2O3, CaO, MgO and organic matter.The present invention passes through
Acid solution is added into diatomite and carries out immersion treatment, the impurity such as most of iron and the aluminium in diatomite can be removed, substantially
The specific surface area of diatomite being promoted, meanwhile, the pore structure of diatomite can be modified in acid cleaning process；Pass through deionization
The extra acid solution on diatomite is removed after water elution, then diatomite is dried, and it is micro- that grinding micronization processes obtain diatomite
Grain；
Glass micro mist is added into bergmeal particle, under the action of ultrasound, glass micro mist penetrates into bergmeal particle
In pore structure, and in balling furnace, during flame blowing, glass micro mist melts and is attached to bergmeal particle in situ
Internal pore structure in, when light is irradiated to the surface of the bergmeal particle, the interface formed after glass micro mist melting can be with
Multipath reflection, refraction are carried out to light, to achieve the effect that light is spread；Relative to traditional inorganic particulate, the present invention is provided
The bergmeal particle of load melten glass micro mist mixed and disorderly reflection, refraction can be carried out to light, ensuring that excellent coverings imitate
While fruit, it is ensured that the transmitance of light.
The present invention does not do special restriction to the preparation method of the glass micro mist, and partial size satisfaction can penetrate into
In the pore structure of diatomite.The preparation method of the glass micro mist is that glass is first sent to press machine mesohigh
It is broken, the glass disintegrating slag that partial size is 3~8cm is obtained, then glass disintegrating slag is transferred in tungsten carbide high speed ball mill, with partial size
For 1~2cm stainless shot as abrading-ball, the revolving speed that tungsten carbide high speed ball mill is arranged is 600~800r/min, and glass is broken
Slag ball milling obtains glass micro mist.
In the present invention, the effect of acid solution is to carry out pickling processes to diatomite, to the type of the acid solution
Special requirement is not done, can be well known for one of ordinary skill in the art, example acid solution as mentioned can be hydrochloric acid, nitre
Acid, sulfuric acid, boric acid, perchloric acid, thiocyanic acid, sulfurous acid, phosphoric acid, phosphorous acid, hypochlorous acid, formic acid, acetic acid, benzoic acid, benzene sulfonic acid
At least one of Deng.
In the present invention, the effect of organic solvent is the carrier as bergmeal particle and glass micro mist, and the present invention is to it
There is no particular/special requirement, it can be for known to one of ordinary skill in the art, it is preferred that the organic solvent is acetone, N, N- bis-
Methylformamide, N-Methyl pyrrolidone, DMAC N,N' dimethyl acetamide, dimethyl acetamide, methylene chloride, triethyl phosphate,
At least one of chloroform, toluene, ethyl alcohol, acetic acid, ethyl acetate, formic acid, chloroform, tetrahydrofuran and dimethyl sulfoxide.
Further, according to the present invention, the partial size of the bergmeal particle is 5~10 μm；The partial size of the glass granules
It is 1~3 μm.
Further, according to the present invention, in step (1.2), after the weight ratio of bergmeal particle and glass micro mist affects
Reflection of the continuous bergmeal particle being prepared for light, refraction effect, if the additive amount of glass micro mist is very few, diatomite is micro-
The filling glass micro mist being unable to fully in the pore structure of grain, so that bergmeal particle is formed by the light diffusion of light diffusion particle
Effect is bad, and the loading of glass micro mist is excessive, not only results in waste, also results in the burning for influencing subsequent glass micro mist
Melt.In the present invention, the weight ratio of the bergmeal particle and glass micro mist is 1:(0.3~0.6).
In the step (1.3), the vacuum degree for controlling balling furnace is 0.10~0.45Mpa, by under vacuum conditions
Blowing processing is carried out to mixture A, it is ensured that glass micro mist melts in situ in the pore structure of bergmeal particle and is attached to hole
In gap structure.
In the present invention, the partial size of the nylon particle is 3~8 μm.
The partial size of the PMMA particle is 10~20 μm.
The present invention does not do special restriction to the thickness of the PET base material, can be PET base commonly used in the prior art
Material, the PET base material with a thickness of 100~250 μm；
Lower coating composition PET base material surface coat with a thickness of 5~15 μm；
Coating composition PET base material surface coat with a thickness of 10~35 μm.
The present invention also provides a kind of optical diffusions being prepared using above-mentioned preparation method.
Above-mentioned lower coating composition, coating composition are successively coated on to the two sides of PET base material, PET base material is coated
Journey is as follows: substrate is unreeled through unreeling machine, then automatic coiling, and composition toasts after being coated on substrate by five sections of baking ovens,
The temperature of baking oven is 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 105 DEG C；Baking oven length is 20m, and the residence time is substrate in an oven
1min finally winds by winder, obtains optical diffusion of the present invention.
Compared with prior art, the present invention has following technical effect that
In the present invention, by introducing glass micro mist in bergmeal particle, then by being blown in balling furnace Flame, make
It obtains glass micro mist to melt in situ in the pore structure of bergmeal particle, obtains the glass being filled in bergmeal particle pore structure
Glass micro mist, the glass micro mist after the melting can not only support the pore structure of bergmeal particle, can also carry out to light
Multipath reflection, refraction, to improve the translucency of light diffusion particle while meeting light diffusion particle excellent covering performance
Energy.Above-mentioned smooth diffusion particle is added in optical diffusion, while ensuring high covering, improves the saturating of optical diffusion
Light rate.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is furture elucidated.
The optical diffusion being prepared in embodiment provided by the invention is tested by following test method:
1, light transmittance, mist degree
It is surveyed using model WGT-S light transmittance/mist degree analyzer that Shanghai Precision Scientific Apparatus Co., Ltd produces
Examination.
2, adhesive force
It is tested according to GB/T 9286 " paint and varnish, the cross cut test of paint film ".
3, brightness influences
The light-emitting surface of backlight unit is divided into 2 × 2 4th area, is directed to lighting 1 hour using Fu Shida BM-7A luminance meter
Front face brightness afterwards is measured.Measuring angle is 1 °, and luminance meter is 50cm at a distance from backlight single side light-emitting surface.Acquire back
The arithmetic mean of instantaneous value of the brightness at 4 positions is as brightness in the face of light source single side light-emitting surface.
The optical diffusion being prepared in embodiment is placed in backlight module as upper diffusion barrier and is used, and takes away this
Brightness value when upper diffusion barrier is compared (brightness of backlight module is calculated as 100% when taking away diffusion barrier on this).
By above-mentioned test result summary record into table 1.
Embodiment 1
A kind of preparation method of optical diffusion, comprising the following steps:
(1) preparation of light diffusion particle
(1.1) hydrochloric acid solution (1mol/L) is added into diatomite, is filtered after immersion treatment and elutes 2 with deionized water
It is secondary, it then dried under the conditions of 60 DEG C, grind micronization processes, obtain the bergmeal particle that partial size is 8 μm；
(1.2) acetone is added in the bergmeal particle being prepared in step (1.1), partial size is then added while stirring
For 2 μm of glass micro mist, then ultrasonic disperse handles 40min；Obtain mixture A；The bergmeal particle and glass micro mist
Weight ratio is 1:0.5；
(1.3) vacuum degree for controlling balling furnace is 0.30Mpa, using flame injecting mixed object A, obtains the light diffusion
Particle；
(2) the nylon particle that above-mentioned smooth diffusion particle and partial size are 5 μm is mixed, is subsequently added into polyester polyol, then plus
Enter curing agent (PC2000, Nippon Paint Co., Ltd's production), is uniformly mixed, obtains for being applied under optical diffusion
The composition of layer；
(Japanese ponding is melted into polymethyl methacrylate (PMMA) particle for being 15 μm by above-mentioned smooth diffusion particle and partial size
Industrial group) mixing, it is subsequently added into polyester polyol, adding curing agent, (PC2000, Nippon Paint Co., Ltd are raw
Produce), it is uniformly mixed, obtains the composition of the coating on optical diffusion；
(3) above-mentioned lower coating composition, coating composition are successively coated on to 150 μm of PET base material (Ningbo Chang Yang section
The production of skill limited liability company) two sides, substrate coating process is as follows: substrate is unreeled through unreeling machine, then automatic coiling, combination
Object toasts after being coated on substrate by five sections of baking ovens, and the temperature of baking oven is 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 105 DEG C；
Baking oven length is 20m, and the residence time is 1min to substrate in an oven, finally winds by winder, obtains the optics and expand
Dissipate film；
It controls and rolls up speed, that is, the distance between spreading blade and substrate on substrate, make 20 μm of coating layer thickness in PET base material, under
Coating layer thickness is 10 μm.
Embodiment 2
A kind of preparation method of optical diffusion, comprising the following steps:
(1) preparation of light diffusion particle
(1.1) hydrochloric acid solution (1mol/L) is added into diatomite, is filtered after immersion treatment and elutes 3 with deionized water
It is secondary, it then dried under the conditions of 60 DEG C, grind micronization processes, obtain the bergmeal particle that partial size is 7 μm；
(1.2) acetone is added in the bergmeal particle being prepared in step (1.1), partial size is then added while stirring
For 2 μm of glass micro mist, then ultrasonic disperse handles 50min；Obtain mixture A；The bergmeal particle and glass micro mist
Weight ratio is 1:0.4；
(1.3) vacuum degree for controlling balling furnace is 0.30Mpa, using flame injecting mixed object A, obtains the light diffusion
Particle；
(2) the nylon particle that above-mentioned smooth diffusion particle and partial size are 5 μm is mixed, is subsequently added into polyester polyol, then plus
Enter curing agent (PC2000, Nippon Paint Co., Ltd's production), is uniformly mixed, obtains for being applied under optical diffusion
The composition of layer；
(Japanese ponding is melted into polymethyl methacrylate (PMMA) particle for being 15 μm by above-mentioned smooth diffusion particle and partial size
Industrial group) mixing, it is subsequently added into polyester polyol, adding curing agent, (PC2000, Nippon Paint Co., Ltd are raw
Produce), it is uniformly mixed, obtains the composition of the coating on optical diffusion；
(3) above-mentioned lower coating composition, coating composition are successively coated on to 150 μm of PET base material (Ningbo Chang Yang section
The production of skill limited liability company) two sides, substrate coating process is as follows: substrate is unreeled through unreeling machine, then automatic coiling, combination
Object toasts after being coated on substrate by five sections of baking ovens, and the temperature of baking oven is 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 105 DEG C；
Baking oven length is 20m, and the residence time is 1min to substrate in an oven, finally winds by winder, obtains the optics and expand
Dissipate film；
It controls and rolls up speed, that is, the distance between spreading blade and substrate on substrate, make 20 μm of coating layer thickness in PET base material, under
Coating layer thickness is 10 μm.
Embodiment 3
A kind of preparation method of optical diffusion, comprising the following steps:
(1) preparation of light diffusion particle
(1.1) hydrochloric acid solution (1mol/L) is added into diatomite, is filtered after immersion treatment and elutes 2 with deionized water
It is secondary, it then dried under the conditions of 60 DEG C, grind micronization processes, obtain the bergmeal particle that partial size is 5 μm；
(1.2) acetone is added in the bergmeal particle being prepared in step (1.1), partial size is then added while stirring
For 2 μm of glass micro mist, then ultrasonic disperse handles 30min；Obtain mixture A；The bergmeal particle and glass micro mist
Weight ratio is 1:0.5；
(1.3) vacuum degree for controlling balling furnace is 0.30Mpa, using flame injecting mixed object A, obtains the light diffusion
Particle；
(2) the nylon particle that above-mentioned smooth diffusion particle and partial size are 5 μm is mixed, is subsequently added into polyester polyol, then plus
Enter curing agent (PC2000, Nippon Paint Co., Ltd's production), is uniformly mixed, obtains for being applied under optical diffusion
The composition of layer；
(Japanese ponding is melted into polymethyl methacrylate (PMMA) particle for being 15 μm by above-mentioned smooth diffusion particle and partial size
Industrial group) mixing, it is subsequently added into polyester polyol, adding curing agent, (PC2000, Nippon Paint Co., Ltd are raw
Produce), it is uniformly mixed, obtains the composition of the coating on optical diffusion；
(3) above-mentioned lower coating composition, coating composition are successively coated on to 150 μm of PET base material (Ningbo Chang Yang section
The production of skill limited liability company) two sides, substrate coating process is as follows: substrate is unreeled through unreeling machine, then automatic coiling, combination
Object toasts after being coated on substrate by five sections of baking ovens, and the temperature of baking oven is 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 105 DEG C；
Baking oven length is 20m, and the residence time is 1min to substrate in an oven, finally winds by winder, obtains the optics and expand
Dissipate film；
It controls and rolls up speed, that is, the distance between spreading blade and substrate on substrate, make 20 μm of coating layer thickness in PET base material, under
Coating layer thickness is 10 μm.
Embodiment 4
A kind of preparation method of optical diffusion, comprising the following steps:
(1) preparation of light diffusion particle
(1.1) hydrochloric acid solution (1mol/L) is added into diatomite, is filtered after immersion treatment and elutes 3 with deionized water
It is secondary, it then dried under the conditions of 60 DEG C, grind micronization processes, obtain the bergmeal particle that partial size is 10 μm；
(1.2) acetone is added in the bergmeal particle being prepared in step (1.1), partial size is then added while stirring
For 2 μm of glass micro mist, then ultrasonic disperse handles 60min；Obtain mixture A；The bergmeal particle and glass micro mist
Weight ratio is 1:0.5；
(1.3) vacuum degree for controlling balling furnace is 0.3Mpa, using flame injecting mixed object A, obtains the light diffusion
Particle；
(2) the nylon particle that above-mentioned smooth diffusion particle and partial size are 5 μm is mixed, is subsequently added into polyester polyol, then plus
Enter curing agent (PC2000, Nippon Paint Co., Ltd's production), is uniformly mixed, obtains for being applied under optical diffusion
The composition of layer；
(Japanese ponding is melted into polymethyl methacrylate (PMMA) particle for being 15 μm by above-mentioned smooth diffusion particle and partial size
Industrial group) mixing, it is subsequently added into polyester polyol, adding curing agent, (PC2000, Nippon Paint Co., Ltd are raw
Produce), it is uniformly mixed, obtains the composition of the coating on optical diffusion；
(3) above-mentioned lower coating composition, coating composition are successively coated on to 150 μm of PET base material (Ningbo Chang Yang section
The production of skill limited liability company) two sides, substrate coating process is as follows: substrate is unreeled through unreeling machine, then automatic coiling, combination
Object toasts after being coated on substrate by five sections of baking ovens, and the temperature of baking oven is 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C, 105 DEG C；
Baking oven length is 20m, and the residence time is 1min to substrate in an oven, finally winds by winder, obtains the optics and expand
Dissipate film；
It controls and rolls up speed, that is, the distance between spreading blade and substrate on substrate, make 20 μm of coating layer thickness in PET base material, under
Coating layer thickness is 10 μm.
Embodiment 5
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.2), the glass is micro-
The partial size of powder is 1 μm, remaining is constant, and the optical diffusion is prepared.
Embodiment 6
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.2), the glass is micro-
The partial size of powder is 3 μm, remaining is constant, and the optical diffusion is prepared.
Embodiment 7
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.2), the diatomite
The weight ratio of particle and glass micro mist is 1:0.3, remaining is constant, and the optical diffusion is prepared.
Embodiment 8
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.2), the diatomite
The weight ratio of particle and glass micro mist is 1:0.6, remaining is constant, and the optical diffusion is prepared.
Embodiment 9
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.3), balling furnace it is true
Reciprocal of duty cycle control is 0.10Mpa, remaining is constant, and the optical diffusion is prepared.
Embodiment 10
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (1.3), balling furnace it is true
Reciprocal of duty cycle control is 0.45Mpa, remaining is constant, and the optical diffusion is prepared.
Embodiment 11
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the nylon granule that uses
The partial size of son is 3 μm, remaining is constant, and the optical diffusion is prepared.
Embodiment 12
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the nylon granule that uses
The partial size of son is 8 μm, remaining is constant, and the optical diffusion is prepared.
Embodiment 13
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the poly- methyl that uses
The partial size of methyl acrylate (PMMA) particle is 10 μm, remaining is constant, and the optical diffusion is prepared.
Embodiment 14
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the poly- methyl that uses
The partial size of methyl acrylate (PMMA) particle is 20 μm, remaining is constant, and the optical diffusion is prepared.
Comparative example 1
This comparative example prepares optical diffusion as described in Example 1, unlike, the bergmeal particle and glass are micro-
The weight ratio of powder is 1:0.1.Remaining is constant, and the optical diffusion is prepared.
Comparative example 2
This comparative example prepares optical diffusion as described in Example 1, unlike, the bergmeal particle and glass are micro-
The weight ratio of powder is 1:0.8.Remaining is constant, and the optical diffusion is prepared.
Comparative example 3
This comparative example prepares optical diffusion as described in Example 1, unlike, in step (1), diatomite is carried out
Grinding refinement obtains the bergmeal particle that partial size is 15 μm, remaining is constant, and the optical diffusion is prepared.
Comparative example 4
This comparative example prepares optical diffusion as described in Example 1, unlike, in step (1), diatomite is carried out
Grinding refinement obtains the bergmeal particle that partial size is 3 μm, remaining is constant, and the optical diffusion is prepared.
Comparative example 5
This comparative example prepares optical diffusion as described in Example 1, unlike, in step (2), addition partial size is 5 μ
The glass micro mist of m, remaining is constant, and the optical diffusion is prepared.
Comparative example 6
This comparative example prepares optical diffusion as described in Example 1, unlike, in step (1.3), balling furnace it is true
Reciprocal of duty cycle control is 0.80Mpa, remaining is constant, and the optical diffusion is prepared.
Comparative example 7
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the nylon granule that uses
The partial size of son is 10 μm, remaining is constant, and the optical diffusion is prepared.
Comparative example 8
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the poly- methyl that uses
The partial size of methyl acrylate (PMMA) particle is 7 μm, remaining is constant, and the optical diffusion is prepared.
Comparative example 9
The present embodiment prepares optical diffusion as described in Example 1, unlike, in step (2), the poly- methyl that uses
The partial size of methyl acrylate (PMMA) particle is 30 μm, remaining is constant, and the optical diffusion is prepared.
Table 1:
It can be seen that optical diffusion provided by the invention with excellent covering (mist degree in conjunction with the experimental data of table 1
It is high), while there is excellent light transmission.
Basic principles and main features and the features of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (8)
1. a kind of preparation method of optical diffusion, it is characterised in that: the following steps are included:
(1) preparation of light diffusion particle
(1.1) acid solution is added into diatomite, filters after immersion treatment and is eluted 2~3 times with deionized water, then to it
It dried, grind micronization processes, obtain bergmeal particle；
(1.2) organic solvent is added in the bergmeal particle being prepared in step (1.1), glass is then added while stirring
Micro mist, then ultrasonic disperse handles 30~60min；Obtain mixture A；
(1.3) flame injecting mixed object A is used in balling furnace, obtains the light diffusion particle；
(2) above-mentioned smooth diffusion particle is mixed with nylon particle, is subsequently added into the pure and mild curing agent of polyester polyols, be stirred
It is even, obtain the lower coating composition for optical diffusion；
Above-mentioned smooth diffusion particle is mixed with PMMA particle, the pure and mild curing agent of polyester polyols is subsequently added into, is uniformly mixed, obtains
To the coating composition for optical diffusion；
(3) lower coating composition, coating composition are successively coated on to the two sides of PET base material, obtain the optics diffusion
Film.
2. the preparation method of optical diffusion according to claim 1, it is characterised in that: the partial size of the bergmeal particle
It is 5~10 μm；The partial size of the glass granules is 1~3 μm.
3. the preparation method of optical diffusion according to claim 1, it is characterised in that: in step (1.2), the diatom
The weight ratio of native particle and glass micro mist is 1:(0.3~0.6).
4. the preparation method of optical diffusion according to claim 1, it is characterised in that: in step (1.3), control nodularization
The vacuum degree of furnace is 0.10~0.45Mpa.
5. the preparation method of optical diffusion according to claim 1, it is characterised in that: in step (2), the nylon
The partial size of particle is 3~8 μm.
6. the preparation method of optical diffusion according to claim 1, it is characterised in that: PMMA described in step (2)
The partial size of son is 10~20 μm.
7. the preparation method of optical diffusion according to claim 1, it is characterised in that: in step (3),
The PET base material with a thickness of 100~250 μm；
Lower coating composition PET base material surface coat with a thickness of 5~15 μm；
Coating composition PET base material surface coat with a thickness of 10~35 μm.
8. a kind of optical diffusion that the preparation method as described in claim 1~7 any one is prepared.
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| CN1474201A (en) * | 2002-08-09 | 2004-02-11 | 伊斯曼柯达公司 | Optical element containing nano composite particles |
| CN102073077A (en) * | 2010-10-15 | 2011-05-25 | 华澳富通(天津)科技发展有限公司 | Efficient photodiffusion material as well as preparation method and application thereof |
| CN106908873A (en) * | 2017-04-24 | 2017-06-30 | 宁波东旭成新材料科技有限公司 | A kind of preparation method of haze high transmittance diffusion barrier |
| US9804299B2 (en) * | 2015-04-23 | 2017-10-31 | Hon Hai Precision Industry Co., Ltd. | Compound reflective plate and method for manufacturing same |
| CN108117273A (en) * | 2017-12-26 | 2018-06-05 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of high reflectance glass microballoon and preparation method thereof |
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2018
- 2018-08-06 CN CN201810882242.6A patent/CN109031486A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474201A (en) * | 2002-08-09 | 2004-02-11 | 伊斯曼柯达公司 | Optical element containing nano composite particles |
| CN102073077A (en) * | 2010-10-15 | 2011-05-25 | 华澳富通(天津)科技发展有限公司 | Efficient photodiffusion material as well as preparation method and application thereof |
| US9804299B2 (en) * | 2015-04-23 | 2017-10-31 | Hon Hai Precision Industry Co., Ltd. | Compound reflective plate and method for manufacturing same |
| CN106908873A (en) * | 2017-04-24 | 2017-06-30 | 宁波东旭成新材料科技有限公司 | A kind of preparation method of haze high transmittance diffusion barrier |
| CN108117273A (en) * | 2017-12-26 | 2018-06-05 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of high reflectance glass microballoon and preparation method thereof |
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Application publication date: 20181218 |