CN103472511B - A kind of high-stiffness reflectance coating and preparation method thereof - Google Patents
A kind of high-stiffness reflectance coating and preparation method thereof Download PDFInfo
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- CN103472511B CN103472511B CN201310438348.4A CN201310438348A CN103472511B CN 103472511 B CN103472511 B CN 103472511B CN 201310438348 A CN201310438348 A CN 201310438348A CN 103472511 B CN103472511 B CN 103472511B
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Abstract
A kind of high-stiffness reflectance coating, comprise reflectance coating basic unit, have microvesicle in reflectance coating basic unit, the material of reflectance coating basic unit is PET; Reflectance coating basic unit is provided with one deck diffusion barrier, and diffusion barrier is made up of following component: polymethylmethacrylate: 20 mass parts, polyisocyanates: 15 mass parts, diffusion particle: 1 ~ 3 mass parts.Its preparation method is first prepare reflectance coating basic unit, then prepares coating fluid, according to following ratio, mixing of materials is even when preparing coating fluid: polymethylmethacrylate 20 mass parts, polyisocyanates 15 mass parts, diffusion particle 1 ~ 3 mass parts; Coating fluid is coated in reflectance coating basic unit after having prepared, and is placed in baking oven heat drying 1 minute at the temperature of 130 DEG C.The light that reflecting film reflects of the present invention goes out evenly, soft.Due to reflecting properties and diffusion are incorporated on a film, production cost can be reduced.
Description
(1) technical field
The present invention relates to a kind of reflectance coating, and the preparation method of reflectance coating.
(2) background technology
Along with the arriving of digital Age, liquid crystal display (LCD) has become current the most general display technique.Because LCD has environmental protection, consume energy low, Low emissivity, the advantages such as picture is soft, so LCD will be the display technique of main flow in coming few decades.LCD is the display device of non-luminescent, just need can reach the function of display by backlight.The quality of backlight performance is except can directly affect except LCD video picture quality, and the cost of backlight accounts for the 3-5% of LCD module, and the electric power consumed more accounts for 75% of module, is considerable spare part in LCD module.Fine, large-sized LCD, must have high performance backlight technology to coordinate with it, and therefore while LCD industry makes great efforts developing new opplication field, the high performance of backlight technology also plays the role of person who has rendered outstanding service behind the scenes.
The main member of backlight system comprises: light source, light guide plate, all kinds of blooming piece.Current light source mainly contains EL, CCFL and LED three types, can be divided into side-light type and straight-down negative two kinds according to distribution of light sources position difference.Along with LCD module constantly to brighter, gentlier, thinner future development, side-light type CCFL formula backlight become current backlight development main flow.
In backlight system, blooming piece mainly comprises reflectance coating, diffusion barrier and brightness enhancement film three kinds.The Main Function of reflectance coating is the reflectivity improving optical surface, will spill the light high-level efficiency bottom light guide plate and reflect without consume, thus reduces light consume, reduces power consumption, improves the light saturation degree of LCD.At present, for improving the reflectivity of reflectance coating, extensive employing following methods, add a large amount of inorganic particulates or incompatible resin in the polyester, in biaxial orientation process, formed a large amount of microvesicle (as application number be 201010591111.6,201010589181.8, the Chinese invention patent of 201010589164.4 etc. the reflectance coating that provides all there is microvesicle), each microvesicle can be used as a total reflection unit, and the total reflection unit of high-density arrangement forms total reflection to light.The reflectance coating obtained by this method, has the advantages that reflectivity is high.But be filled with space in the reflectance coating with microvesicle, thus cause the density of reflectance coating to decline, the deflection of film reduces, specifically in use, the phenomenon of diaphragm flexes will be there is, especially even more serious in the field that televisor, liquid crystal display, advertising lamp box etc. need diaphragm vertically to place.
(3) summary of the invention
In order to overcome the above-mentioned deficiency of existing reflectance coating, the invention provides a kind of high-stiffness reflectance coating, and preparation method is provided.
The technical scheme that the present invention solves its technical matters is: a kind of high-stiffness reflectance coating, comprises reflectance coating basic unit, has microvesicle in described reflectance coating basic unit, and the material of described reflectance coating basic unit is PET;
Described reflectance coating basic unit is provided with one deck diffusion barrier, and described diffusion barrier is made up of following component:
Polymethylmethacrylate: 20 mass parts
Polyisocyanates: 15 mass parts
Diffusion particle: 1 ~ 3 mass parts.
Preferably, described diffusion particle is TiO 2 particles.
Preferred, described TiO 2 particles is rutile titanium dioxide.
Preferred, the particle diameter of described rutile titanium dioxide particle is 0.1 ~ 15 μm.
A kind of preparation method of high-stiffness reflectance coating, first reflectance coating basic unit is prepared, prepare coating fluid again, according to following ratio, mixing of materials is even when preparing coating fluid: polymethylmethacrylate 20 mass parts, polyisocyanates 15 mass parts, diffusion particle 1 ~ 3 mass parts;
Coating fluid is coated in reflectance coating basic unit after having prepared, and is placed in baking oven heat drying 1 minute at the temperature of 130 DEG C.
Described diffusion particle preferentially selects TiO 2 particles.More preferably select rutile titanium dioxide.The optimized particle size of described rutile titanium dioxide particle is 0.1 ~ 15 μm.
Beneficial effect of the present invention is: 1. in reflectance coating basic unit, be coated with one deck diffusion barrier, after this layer of diffusion barrier sclerosis, there is higher hardness, thus improve the deflection of reflectance coating entirety, in coating, with the addition of a certain amount of diffusion particle simultaneously, make this coating can increase diffusion to incident light on the basis not destroying reflecting effect, thus the light going out to reflect evenly, soft.2. due to reflecting properties and diffusion are incorporated on a film, can reduce or remove diffusion barrier, the loss of light is reduced, and Downstream processing flow process is greatly simplified, enhance productivity, improve yield rate, be conducive to the reduction of production cost, and play energy-saving and cost-reducing effect.
(4) accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
(5) embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to Fig. 1, a kind of high-stiffness reflectance coating, comprises reflectance coating basic unit 1, has microvesicle 2 in described reflectance coating basic unit 1, and the material of described reflectance coating basic unit 1 is PET;
Described reflectance coating basic unit 1 is provided with one deck diffusion barrier 3, and described diffusion barrier 3 is made up of following component:
Polymethylmethacrylate: 20 mass parts
Polyisocyanates: 15 mass parts
Diffusion particle: 1 ~ 3 mass parts.Diffusion particle is preferably TiO 2 particles.Titania has rutile-type and anatase titanium dioxide two kinds, because rutile titanium dioxide crystal structure is fine and close, refractive index is high, large with vibrin refringence, the interface of high reverse--bias can be obtained, therefore more preferably rutile titanium dioxide, in the present embodiment, diffusion particle just selects rutile titanium dioxide particle, and the particle diameter of rutile titanium dioxide particle is 0.1 ~ 15 μm, be preferably 0.5-10um, if be less than 0.1um, then do not have obvious diffusion, if be greater than 15um, then be coated with more difficult, and particle come off unavoidably.
The preparation method of above-mentioned high-stiffness reflectance coating, first reflectance coating basic unit is prepared, prepare coating fluid again, according to following ratio, mixing of materials is even when preparing coating fluid: polymethylmethacrylate 20 mass parts, polyisocyanates 15 mass parts, diffusion particle 1 ~ 3 mass parts;
Coating fluid is coated in reflectance coating basic unit after having prepared, and is placed in baking oven heat drying 1 minute at the temperature of 130 DEG C.
Claims (8)
1. a high-stiffness reflectance coating, comprises reflectance coating basic unit, has microvesicle, it is characterized in that in described reflectance coating basic unit: the material of described reflectance coating basic unit is PET;
Described reflectance coating basic unit is provided with one deck diffusion barrier, and described diffusion barrier is made up of following component:
Polymethylmethacrylate: 20 mass parts;
Polyisocyanates: 15 mass parts;
Diffusion particle: 1 ~ 3 mass parts.
2. high-stiffness reflectance coating as claimed in claim 1, is characterized in that: described diffusion particle is TiO 2 particles.
3. high-stiffness reflectance coating as claimed in claim 2, is characterized in that: described TiO 2 particles is rutile titanium dioxide.
4. high-stiffness reflectance coating as claimed in claim 3, is characterized in that: the particle diameter of described rutile titanium dioxide particle is 0.1 ~ 15 μm.
5. a preparation method for high-stiffness reflectance coating, first prepares reflectance coating basic unit, it is characterized in that:
Prepare coating fluid again, according to following ratio, mixing of materials is even when preparing coating fluid: polymethylmethacrylate 20 mass parts, polyisocyanates 15 mass parts, diffusion particle 1 ~ 3 mass parts;
Coating fluid is coated in reflectance coating basic unit after having prepared, and is placed in baking oven heat drying 1 minute at the temperature of 130 DEG C.
6. the preparation method of high-stiffness reflectance coating as claimed in claim 5, is characterized in that: described diffusion particle selects TiO 2 particles.
7. the preparation method of high-stiffness reflectance coating as claimed in claim 6, is characterized in that: described TiO 2 particles selects rutile titanium dioxide.
8. the preparation method of high-stiffness reflectance coating as claimed in claim 7, is characterized in that: the particle diameter of described rutile titanium dioxide particle is 0.1 ~ 15 μm.
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| CN201310438348.4A CN103472511B (en) | 2013-09-16 | 2013-09-16 | A kind of high-stiffness reflectance coating and preparation method thereof |
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| CN201310438348.4A CN103472511B (en) | 2013-09-16 | 2013-09-16 | A kind of high-stiffness reflectance coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103969723B (en) * | 2014-04-30 | 2016-08-24 | 宁波东旭成新材料科技有限公司 | A kind of efficiently diffusing reflection sexual reflex film and preparation method thereof |
| CN103969718A (en) * | 2014-05-10 | 2014-08-06 | 宁波东旭成新材料科技有限公司 | Diffusion film preparing method |
| CN106032589A (en) * | 2015-03-20 | 2016-10-19 | 余盈利 | High-toughness reflection yarn and manufacturing method thereof, and processing machine |
| CN106772729A (en) * | 2016-12-29 | 2017-05-31 | 吴中区穹窿山德毅新材料技术研究所 | A kind of optical reflectance coating of low-luster and the backlight module using the reflectance coating |
| CN113912890B (en) * | 2021-10-14 | 2022-12-27 | 宁波东旭成新材料科技有限公司 | Preparation method of reflecting film |
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| CN202003046U (en) * | 2011-01-30 | 2011-10-05 | 宁波东旭成化学有限公司 | Optical diffusion film |
| CN202815248U (en) * | 2012-08-22 | 2013-03-20 | 宁波东旭成化学有限公司 | Reflective film |
| CN103207421A (en) * | 2012-08-30 | 2013-07-17 | 湖北航天化学技术研究所 | Diffusion film and production method |
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| US20100297745A1 (en) * | 2009-05-19 | 2010-11-25 | Nanyang Technological University | Flow-through method of functionalizing inner surfaces of a microfluidic device |
| AU2010214758B2 (en) * | 2009-11-10 | 2012-05-24 | Lotte Advanced Materials Co., Ltd. | Colored Material Coated Transparent Chip for Artificial Stone, Method of Preparing Same, and Artificial Stone including Same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202003046U (en) * | 2011-01-30 | 2011-10-05 | 宁波东旭成化学有限公司 | Optical diffusion film |
| CN202815248U (en) * | 2012-08-22 | 2013-03-20 | 宁波东旭成化学有限公司 | Reflective film |
| CN103207421A (en) * | 2012-08-30 | 2013-07-17 | 湖北航天化学技术研究所 | Diffusion film and production method |
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