CN102558813A - Light-diffusion anti-glare nano polycarbonate material as well as preparation and application thereof - Google Patents
Light-diffusion anti-glare nano polycarbonate material as well as preparation and application thereof Download PDFInfo
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- CN102558813A CN102558813A CN2011104107362A CN201110410736A CN102558813A CN 102558813 A CN102558813 A CN 102558813A CN 2011104107362 A CN2011104107362 A CN 2011104107362A CN 201110410736 A CN201110410736 A CN 201110410736A CN 102558813 A CN102558813 A CN 102558813A
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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
- 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
- B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
Abstract
The invention discloses a light-diffusion anti-glare nano polycarbonate (PC) material as well as preparation and application thereof in an LED (light-emitting diode) illumination material and belongs to the technical field of light-diffusion anti-glare nano PC materials. The light-diffusion anti-glare nano PC material comprises the following components in parts by weight: 100 parts of PC, 0.01-0.1 part of hindered phenol type antioxygen, 0.01-0.1 part of phosphite ester type antioxygen, 0.1-2.0 parts of polysiloxane particles serving as a light diffusing agent and 0.1-0.5 part of lubricating agent. The preparation method comprises the following steps of: putting uniformly-mixed raw materials in a feeding hopper of a dual-screw extruding machine, carrying out melt extrusion, cooling, and granulating. Compared with the existing LED light-diffusion material, the prepared light-diffusion anti-glare nano PC material has excellent luminous flux under the condition of same haze. A proper production device is selected, thus polymer degradation is reduced, the stability of the light-diffusion anti-glare nano PC material is improved, and factorized massive production of the light-diffusion anti-glare nano PC material is favorably realized.
Description
Technical field
The invention belongs to light diffusion anti-glare nanometer polycarbonate (PC) material technology field, particularly a kind of light diffusion anti-glare nanometer PC material and preparation and the application in the LED an illuminating material.
Background technology
According to authority's statistics, the social electric consumption on lighting of countries in the world accounts for 10%～20% of this state whole society power consumption total amount, and the electric consumption on lighting amount of China accounts for 12% of national power consumption total amount.Widely popularize green illumination and illuminating energy-saving technology, have important profound significance for building a resource-conserving and environment-friendly society.Increasingly serious along with energy-saving and emission-reduction work, relevant policy is launched respectively in countries in the world, and the lighting installation of less energy-consumption will become main flow.
The energy-conserving and environment-protective light fixture is also popular all the more, and wherein the exploitation of LED fluorescent tube lampshade is paid close attention to by people also more and more.The LED electricity-saving lamp have long service life, power savings significantly, rich color, microminiaturization, advantage such as economical and practical, safe and reliable; Meet the standard that satisfies China's road lighting; And can reach under the prerequisite of equal brightness; Illumination to be lower than about 40% substitutes high-pressure mercury lamp, is an important breakthrough on the energy-conservation history of lighting, has become one of high-technology field of tool development prospect of 21st century.
In recent years; External a few large-engineering plastics supplier such as Teijin Ltd, the rising sun change into, Idemitsu Kosen Co., Ltd. etc. developed bright dipping and spread anti-glare PC material, is used for the manufacturing of LED illumination light diffusion fluorescent tube lampshade, seized market; Basically monopolized the production and selling of this product; Also be in low-end market and domestic this light spreads the production of anti-glare PC material, premium quality product is in blank, does not see relevant report.
PC has the excellent transparency, shock strength and creep resistant.The intensity and the good heat resistance of running have been contained speciality such as strength demand, tough sexual demand and high temperature tolerances under various severe rugged environments such as intense light irradiation, heat condition, are the base materials of first-selected LED illumination light diffusion fluorescent tube lampshade modification.For the light that makes LED becomes soft, light loss is very the littlest again, and present many scholars' research is set about from lampshade exactly, and that utilizes nanomaterial-filled exactly, hopes that the adding of these additives can solve the defective of LED polished bard eye.
At present, the three kinds of technology of the general employing of defective that solve LED fluorescent tube lampshade material aspect are improved: on traditional lampshade, add inorganic assistant agent exactly on the one hand, such as glass microballon, permanent white, titanium oxide, silicon-dioxide etc.When adding these inorganic nano particles, light carries out refraction of light many times through the surface of molecule and reaches the i.e. effect of even light of light diffusion.For example; Chen Zhenpei etc. adopt and add the mantle bead transmissive viewing screen picture brightness height that this inorganic light diffusing agent of glass microballon is made, and can also reach to eliminate to subtract dizzy purpose (Chen Zhenpei, Zhou Kun; Chen Huaixin, etc. " mantle bead transmissive viewing screen " .CN98228140.4. [P] .1999.).Zhang Chen etc. adopt and add TiO
2Nano particle is discovered and is worked as TiO as light diffusing agent
2The concentration of nano particle in chance sample reaches 1.36 * 10
15Cm
-3The time, begin to occur the sub-localization phenomenon of the low light level and (open theory and the experimental study and the TiO of treasure .Nd:YAG ceramic laser
2The research [D] of light diffusion in the random medium. Shandong University .).But because light can't penetrate inorganic molecule, after light passed through, the luminous energy loss was very big, and brightening effect can't satisfy, and can only change the soft property of light, thereby has limited the further application of inorganic light diffusing agent in the LED photodiffusion material.
Be exactly through transforming the surface tissue of photodiffusion material on the one hand; Thereby form the micro concavo-convex structure like employing sandblastings such as friendly justice under the mountain at this periphery and obtain anti-glare film (friend's justice under the mountain; This celebrating of ridge it; Big Technics sun. " anti-dazzle property film and use its display unit and optical diffusion film and use its surface light source system ". China: CN200780045228.0. [P] .2007.) employings mixings diffuser plate device such as river Zhou He design improve the light diffusing ability (river all and; Cui Zhencheng. " mix diffuser plate, and have the backlight assembly and the display unit of mixing diffuser plate ". China: CN200510115826.3.2005.)
In addition, use organic nano microballon aspect in the majority all the concentrating on of the research of LED light fixture at present, this type light diffusing agent is a kind of tiny transparent ball; Can be dispersed in the resin; The light of injecting passes glass spheres, in glass spheres, through many times refraction, penetrates again.Make pointolite become area source, enlarged light-emitting area, can also make light become soft, thereby solved the problem of even light and printing opacity well.As; The light diffusing resin material of employing propenoate such as Ishikawa Kang Hong and polycarbonate is processed the light diffusing sheet of big picture; The xanthochromia that does not also cause simultaneously, molding (Ishikawa Kang Hong with good light diffusing by thermal ageing; In true the sixth of the twelve Earthly Branches at wooden dusk, east, river is extremely grand. " light-diffusing resin composition and the light diffusing sheet that uses this light-diffusing resin composition ", China: 200780016730.9. [P] .2007).During for this aromatic polycarbonate resin shaping of PC optical material light diffusing sheet; Realize big pictureization; Be necessary for and obtain sufficient melt fluidity and improve forming temperature, but the tone band of the light diffusing sheet that is obtained by the thermal ageing of the polycarbonate resin that uses is yellow a bit, therefore is difficult to be met the light diffusing sheet of performance; Needing can bigger pictureization, have excellent light diffusing can resin material.Expect light diffusion effect and mist degree preferably, very important to the selective light diffusant.
Summary of the invention
The objective of the invention is to overcome the defective on the existing domestic technique, a kind of anti-glare nanometer polycarbonate (PC) material of light diffusion that has is provided,, widen the application of home made materials in LED fluorescent tube field so that it can be used for LED illumination light diffusion fluorescent tube lampshade.
Light provided by the invention spreads anti-glare nanometer polycarbonate material; It is made up of the following composition by mass parts: 100 parts of polycarbonate; Hindered phenol type antioxidant 0.01～0.1 mass parts; Phosphite ester kind antioxidant 0.01～0.1 mass parts is as organo-polysilane granules 0.1～2.0 mass parts of light diffusing agent, lubricant 0.1～0.5 mass parts.
Specific as follows:
(1) photodiffusion material selected for use of LED lampshade must have certain light transmission, and therefore, the base material that system of the present invention is selected for use is decided to be clear polycarbonate, and its MI (melting index) scope is 10～15g/10min, is decided to be 100 mass parts consumptions;
(2) with respect to the above-mentioned polycarbonate-based resin of 100 mass parts, also be mixed with the phosphite ester kind antioxidant of 0.01～0.1 mass parts, being fit to phosphite ester kind antioxidant of the present invention is tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester (its molecular formula C
42H
63O
3P); Its outward appearance is a white powder, and toxicity is low, and volatility is low, and thermostability is high, and anti-hydrolytic performance is good, can effectively decompose the hydroperoxide that produce in the polymeric materials hot procedure.With Hinered phenols antioxidant 1010 and 1076 and, can improve the stability in the polymeric materials hot procedure with good synergistic is arranged.
(3) with respect to the above-mentioned polycarbonate-based resin of 100 mass parts; Also be mixed with the hindered phenol type antioxidant of 0.01～0.1 mass parts; Being fit to hindered phenol type antioxidant of the present invention is the β-positive octadecanol ester of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid (its minute formula C
35H
62O
3); It is the multi-functional Hinered phenols antioxidant of a kind of macromole.Pollution-free, not painted, volatility is little, and anti-extractable is good.Be widely used in Vilaterm, Vestolen PP 7052, polyoxymethylene, ABS resin, the PS resin, PVC, engineering plastics in rubber and the petroleum products, have remarkable antioxidant property to Vestolen PP 7052, Vilaterm.Can prolong the time limit of service of goods effectively.With auxiliary antioxidant DLTDP, oxidation inhibitor 168 and be used for acrylic resin, can improve its thermostability significantly, be one of kind that performance is the best in the present phenolic antioxidant.
(4), also be mixed with the lubricant of 0.1～0.5 mass parts with respect to the above-mentioned polycarbonate-based resin of 100 mass parts;
Lubricant is generally the synthetic fluid lubricant, can use poly-alpha-olefin, alkyl aromatics, polybutylenes class, organosilane ester dibasic acid esters and polynary ester, polyolefin-based glycol, polyether class, polyglycol ether, polyolefin-based glycol ethers to be arranged, reach silicone oil, silicon ester, polyphenylene ether, cross fluothane polyether, fluorocarbon oil etc. particularly.
Lubricant as using in the manufacturing that has the anti-glare nanometer polycarbonate material of light diffusion in the present invention is pentaerythritol stearate (its molecular formula C
77H
148O
8).
(5), also be mixed with the light diffusing agent of 0.1～2.0 mass parts and form with respect to the above-mentioned polycarbonate-based resin of 100 mass parts;
Being fit to light diffusing agent of the present invention is organo-polysilane granules, preferably adopts the organo-polysilane granules of different-grain diameter, and the organo-polysilane granules median size is 1～30 μ m, and specific refractory power is between 1.43～1.49.
Adopt the size distribution of the technology control production polymer particle of hierarchical screening on the photodiffusion material technology of the present invention's preparation.
Another object of the present invention is to provide above-mentioned preparation method with the anti-glare nanometer polycarbonate material of scattering of light, this method comprises the steps:
(1) raw material is fully dried after, take by weighing each component by said mass fraction, the raw material that weighs up is dropped in the super mixer thorough mixing;
(2) raw material that mixes is put into the loading hopper of twin screw extruder, through melt extruding cooling, granulation; Make and have light and spread anti-glare nanometer polycarbonate material, during granulation, twin screw extruder is divided into totally eight districts, a district to eight district according to the charging order; The temperature of each section of forcing machine is set and is respectively: 150 ℃ in a district, 240～260 ℃ in two districts, 240～260 ℃ in three districts; 240～260 ℃ in four districts, 240～260 ℃ in five districts, 240～260 ℃ in six districts; 240～260 ℃ in seven districts, 240～260 ℃ in eight districts, 245～265 ℃ of heads.
The interpretation of result of the polycarbonate that the prepared light diffusion of aforesaid method is anti-glare is following:
(1) adding of light diffusing agent has improved the illuminating area that product produces under led light source;
(2) light diffusing agent of selecting for use has increased the mist degree of product, also increases the penetrating light intensity of product simultaneously;
(3) the anti-glare PC product of scattering of light of preparation is compared with existing LED light-scattering material, and under the equal mist degree situation, the optical throughput of this product is more excellent.Select suitable production unit for use, reduce polymer degradation, improve product stability, be beneficial to the batch production scale operation that realizes product.
The anti-glare polycarbonate of light diffusion of the present invention's preparation can be used as LED illumination light diffusion fluorescent tube lampshade and uses.
The production technology that spreads anti-glare material with existing light is compared, and the anti-glare polycarbonate products of light diffusion of the present invention's preparation has following advantage:
(1) adopt organopolysiloxane spherical particle that specific refractory power is different from polycarbonate as light diffusing agent, guarantee more possibly to get in the middle of the materials by many light, and make light in material through many times refraction, penetrate again.Forceful rays disperse through superrefraction equably like this, make pointolite become area source, even the light diffusing sheet of the big picture that is shaped also can obtain not having owing to the xanthochromia that thermal ageing causes, the molding with good light diffusing.
(2) lubricity of employing pentaerythritol stearate structure dispersion agent, the dispersion and the lubricity of raising light diffusion particle, the addition of lower (about 0.2%) just can obtain excellent dispersion lubricity, keeps polycarbonate substrate high pass light ratio rate effectively;
(3) add a small amount of pentaerythritol stearate; Through the remarkable lubricated dispersing property of pentaerythritol stearate, further strengthen dispersing property, form the co-mixing system of stable uniform; Obtain stable light diffusing ability material, realize high-level efficiency, large-scale production.
The present invention adopts organic nano silicon particle light diffusing agent that polycarbonate (PC) is carried out the modification of light diffusion anti-glare; Adopt the dispersion of adding a small amount of pentaerythritol stearate structure dispersion agent raising light diffusing agent and add a small amount of optics white dyes (chemical name: 2; 2 '-(2; The 5-thiophene) two [5-(1,1-diformazan ethyl)]-benzotriazoles, molecular formula: C
26H
26SO
2N
2) improving brightness, gained modification PC has light diffusion high brightness abblendbar characteristics, is mixed through the PC resin of selecting different viscosity, can prepare high-performance optical diffusion anti-glare nanometer product.
Description of drawings
Fig. 1 is the photo of polycomponent LED light diffusing agent under electron microscope.
Embodiment
Following embodiment can make those skilled in the art more comprehensively understand the present invention, but does not limit the present invention in any way.
Embodiment
1. formula system of the present invention
A kind of light diffusion anti-glare nanometer polycarbonate material; It is made up of the following composition by mass parts: 100 parts of polycarbonate, 0.1 part of hindered phenol type antioxidant: the β-positive octadecanol ester of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid; Phosphite ester kind antioxidant: tricresyl phosphite (2; The 4-di-tert-butyl-phenyl) ester is 0.1 part, as 1 part of (wherein, 0.5 part of organo-polysilane granules that median size is 10 μ m of organo-polysilane granules of light diffusing agent; 0.5 a part median size is the organo-polysilane granules of 25 μ m); Lubricant: 0.2 part of pentaerythritol stearate, polycarbonate melt index are 12.4g/10min, and the organo-polysilane granules specific refractory power is 1.44.
2. production technique of the present invention
After raw material fully dried; Take by weighing 5000 gram polycarbonate resins (melting index of multipolymer is 12.4g/10min), 5 gram β-positive octadecanol esters of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid, 5 gram tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) esters; The organopolysiloxane light diffusing agent of 50 gram different-grain diameters (wherein; 25 gram median sizes are the organo-polysilane granules of 10 μ m, and 25 gram median sizes are the organo-polysilane granules of 25 μ m), 10 gram pentaerythritol stearates.
The above-mentioned starting material that weigh up are dropped in the super mixer thorough mixing 6 minutes.The raw material that mixes is put into the loading hopper of twin screw extruder, through melt extruding cooling, granulation.Make and have light and spread anti-glare polycarbonate material.Present embodiment adopts twin screw extruder, and during granulation, twin screw extruder is divided into totally eight districts, a district to eight district according to the charging order; The temperature of each section of forcing machine is set and is respectively: 150 ℃ in a district, 250 ℃ in two districts, 250 ℃ in three districts; 250 ℃ in four districts, 250 ℃ in five districts, 250 ℃ in six districts; 250 ℃ in seven districts, 250 ℃ in eight districts, 255 ℃ of heads.
3. performance test
Melt index determination: by " ASTM D1238 measures the testing method of thermoplastics flow rate with the extruding plastometer " test; Notched Izod impact strength is by " ASTM D256 measures the standard test methods of the anti-cantilever pendulum impact of plastics " test; Tensile strength is by " ASTM D 638-03 plastic tensile standard of performance TP " test; Flexural strength is by " ASTM D790 is the standard test methods of enhancing and reinforced plastics and electrically insulating material flexural property not " test, and heat-drawn wire is tested by " standard test methods of ASTM D648 plastics bending load texturing temperature ".The mensuration of transmitance and mist degree is made long 55mm through the injection mold moulding, and wide 25mm, thickness 2.0mm use spectrophotometer at the light diffusing sheet sample, measure with the D65 light source.
4. interpretation of result
Table 1 system of the present invention and certain leading company's product contrast
Table 1 is all the light diffusing sheet that thickness is 2mm for what the light diffusion anti-glare nanometer PC material of the embodiment of the invention 1 preparation and the high-end photodiffusion material of industry made, under the illuminate condition of same D65 pointolite, tests the gained data.Visible from last table, when thickness was 2mm, photodiffusion material of the present invention was compared with the high-end photodiffusion material of industry, and under the equal haze value situation, transmittance is higher.Explain that material of the present invention when guaranteeing the light diffusion effect, has improved optical throughput, reduced look and declined.When photodiffusion material of the present invention is used for doing LED illuminator lamp pipe, lampshade, just can guarantees to let dazzling led light source become even, soft, attractive in appearance, can't see inner lamp pearl.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. a light spreads anti-glare nanometer polycarbonate material; It is characterized in that: it is made up of the following composition by mass parts: 100 parts of polycarbonate; Hindered phenol type antioxidant 0.01～0.1 mass parts; Phosphite ester kind antioxidant 0.01～0.1 mass parts is as organo-polysilane granules 0.1～2.0 mass parts of light diffusing agent, lubricant 0.1～0.5 mass parts.
2. light according to claim 1 spreads anti-glare nanometer polycarbonate material; It is characterized in that: it is made up of the following composition by mass parts: 100 parts of polycarbonate; Hindered phenol type antioxidant 0.1 mass parts; Phosphite ester kind antioxidant 0.1 mass parts is as organo-polysilane granules 1 mass parts of light diffusing agent, lubricant 0.2 mass parts.
3. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: used polycarbonate melt index range is 10～15g/10min.
4. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: said phosphite ester kind antioxidant is tricresyl phosphite (2, a 4-di-tert-butyl-phenyl) ester.
5. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: said hindered phenol type antioxidant is β-positive octadecanol ester of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid.
6. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: said lubricant is a pentaerythritol stearate.
7. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: the organo-polysilane granules median size is 1～30 μ m.
8. light according to claim 1 spreads anti-glare nanometer polycarbonate material, it is characterized in that: the organo-polysilane granules that adopts different-grain diameter.
9. any described light of claim of claim 1 to 8 spreads the preparation method of anti-glare nanometer polycarbonate material, it is characterized in that this method comprises the steps:
(1) raw material is fully dried after, take by weighing each component by said mass fraction, the raw material that weighs up is dropped in the super mixer thorough mixing;
(2) raw material that mixes is put into the loading hopper of twin screw extruder, through melt extruding cooling, granulation; Make and have light and spread anti-glare nanometer polycarbonate material, during granulation, twin screw extruder is divided into totally eight districts, a district to eight district according to the charging order; The temperature of each section of forcing machine is set and is respectively: 150 ℃ in a district, 240～260 ℃ in two districts, 240～260 ℃ in three districts; 240～260 ℃ in four districts, 240～260 ℃ in five districts, 240～260 ℃ in six districts; 240～260 ℃ in seven districts, 240～260 ℃ in eight districts, 245～265 ℃ of heads.
10. any described light of claim of claim 1 to 9 spreads the application of anti-glare nanometer polycarbonate material, it is characterized in that: said nanometer polycarbonate material is used to make LED illumination light diffusion fluorescent tube lampshade.
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| CN103724808A (en) * | 2013-12-30 | 2014-04-16 | 安徽科聚新材料有限公司 | Photodiffusion antibacterial polypropylene material and preparation method thereof as well as illuminating lamp prepared therefrom |
| CN103724964A (en) * | 2013-12-06 | 2014-04-16 | 江门市道生工程塑料有限公司 | High-ductility high-diffusion PC/ABS alloy material and preparation method thereof |
| CN104109384A (en) * | 2014-06-27 | 2014-10-22 | 惠州市昌亿新材料有限公司 | Light-diffusing agent for polycarbonate and light-diffusing polycarbonate material |
| CN104140663A (en) * | 2014-07-30 | 2014-11-12 | 浙江远征汽摩附件有限公司 | LED lamp light diffusion plate and processing method thereof |
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| CN103724964A (en) * | 2013-12-06 | 2014-04-16 | 江门市道生工程塑料有限公司 | High-ductility high-diffusion PC/ABS alloy material and preparation method thereof |
| CN103724964B (en) * | 2013-12-06 | 2015-11-18 | 江门市道生工程塑料有限公司 | A kind of High-ductility high-diffusion PC/ABS alloy material and preparation method thereof |
| CN103724808A (en) * | 2013-12-30 | 2014-04-16 | 安徽科聚新材料有限公司 | Photodiffusion antibacterial polypropylene material and preparation method thereof as well as illuminating lamp prepared therefrom |
| CN105733088A (en) * | 2014-05-13 | 2016-07-06 | 上海宇明光电材料技术有限公司 | Preparation method of modified plastic for LED tube |
| CN104109384A (en) * | 2014-06-27 | 2014-10-22 | 惠州市昌亿新材料有限公司 | Light-diffusing agent for polycarbonate and light-diffusing polycarbonate material |
| WO2015196533A1 (en) * | 2014-06-27 | 2015-12-30 | 惠州市昌亿新材料有限公司 | Light-diffusing agent for polycarbonate, and light-diffusing polycarbonate material |
| CN104140663A (en) * | 2014-07-30 | 2014-11-12 | 浙江远征汽摩附件有限公司 | LED lamp light diffusion plate and processing method thereof |
| CN108342066A (en) * | 2017-05-22 | 2018-07-31 | 安徽旭升新材料有限公司 | A kind of high-effect PC photodiffusion materials and preparation method thereof |
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Application publication date: 20120711 |