CN104356626A - Polycarbonate material composition of reinforced LED lamp shade and preparation method and LED lamp shade - Google Patents
Polycarbonate material composition of reinforced LED lamp shade and preparation method and LED lamp shade Download PDFInfo
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- CN104356626A CN104356626A CN201410611976.2A CN201410611976A CN104356626A CN 104356626 A CN104356626 A CN 104356626A CN 201410611976 A CN201410611976 A CN 201410611976A CN 104356626 A CN104356626 A CN 104356626A
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- led lampshade
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- 239000000463 material Substances 0.000 title claims abstract description 84
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- 238000002360 preparation method Methods 0.000 title description 12
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000011362 coarse particle Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000006081 fluorescent whitening agent Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 238000004020 luminiscence type Methods 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a polycarbonate material composition of a reinforced LED lamp shade. The polycarbonate material composition comprises 100-120 parts of polycarbonate, 10-15 parts of polymethyl methacrylate, 5-15 parts of light scattering master batch, 4-8 parts of interface reinforcing phase, 2-4 parts of inorganic nanoparticles, 2.0-2.5 parts of methoxyl polyglycol acetic acid, 2-4 parts of a compatilizer MAH-g-EPDM and 0.5-1.5 parts of other functional additives, wherein the interface reinforcing phase is at least one of nanometer aluminum oxide crystal particles or crystal whiskers. The polycarbonate material composition of the reinforced LED lamp shade, which is provided by the invention, is relatively excellent in light permeability and light scattering property, is capable of eliminating the phenomena of halo or dark spot generated from the dispersibility, and is also relatively excellent in mechanical property.
Description
Technical Field
The invention belongs to the technical field of resin composite materials, and particularly relates to a polycarbonate material composition of an enhanced LED lampshade, a preparation method and the LED lampshade.
Background
The main technical parameters characterizing the performance of light diffusing materials include light transmittance and haze. The light transmittance represents the overall utilization rate of the light diffusion material for incident light, and the haze represents the degree of deviation of the incident light from the original incident direction, so that the use efficiency and the diffusion degree of the light diffusion material for introducing the incident light can be characterized by the light transmittance and the haze. For light diffusing materials based on particle scattering, an increase in haze will generally cause a decrease in light transmission. The light transmittance of the lampshade used in daily life is not high, namely, a part of more light energy is lost. Therefore, the development of a light diffusion material having high light transmittance and high haze is important for effectively utilizing electric energy.
Based on the above, in the patent document CN102532857A, the polycarbonate resin is used as the base material, and the spherical micro powder of silicone resin and inorganic nano particles such as nano titanium dioxide, nano silicon dioxide, nano talc powder, etc. are used to make the light diffusion material have higher transmittance and haze as a whole, and a small amount of nano assistant is added to improve the optical haze.
However, in the production, preparation and particularly curing processes of the materials, the nanoparticle material has the characteristic of easy agglomeration, so that the dispersibility of the auxiliary agent is insufficient, the uniformity of the material on the whole is insufficient, and phenomena such as halo or dark spots of light diffusion occur; meanwhile, the polycarbonate material is added with a plurality of inorganic and organic nano components, so that the compatibility with the polycarbonate substrate and the final toughness are obviously reduced. Meanwhile, even though the above improvement measures are provided in the patent document CN102532857A, the total light transmittance of the final overall material in the performance test data is still only 60% or less, and the light transmittance still needs to be further improved, and after most of the light energy is absorbed by the material, the stability of the nano-components inside the material is further easily caused, and the aging of the resin is also accelerated.
Disclosure of Invention
The embodiment of the invention aims to overcome the defects in the prior art and provide a polycarbonate composite material composition of an enhanced LED lampshade and a material preparation method, wherein the light diffusivity, the uniformity, the mechanical property and the like are further improved.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is as follows:
a polycarbonate composite composition for an enhanced LED light cover, comprising:
wherein the interface reinforcing phase is at least one of nano alumina crystal grains or whiskers.
The polycarbonate composite material composition of the enhanced LED lampshade has more excellent light transmittance and light diffusion performance; and can eliminate phenomena such as halo or dark spot generated by dispersion; meanwhile, the composite material also has more excellent mechanical properties.
The invention further provides a method for preparing a polycarbonate composite material of an enhanced LED lampshade by adopting the composition, which comprises the following steps:
obtaining material components according to the formula of the polycarbonate material composition of the enhanced LED lampshade;
mixing the obtained material components to obtain a mixed material;
and melting and extruding the mixed material to obtain the polycarbonate composite material of the enhanced LED lampshade.
The preparation method of the invention only needs to mix the components according to the formula and melt and extrude at proper temperature to obtain the product, and only needs to control the temperature and time of melt extrusion in the process of melt extrusion; therefore, the preparation method has the characteristics of simple process, easily controlled conditions, low cost and low equipment requirement, and is suitable for industrial production.
The invention further provides an LED lampshade prepared from the polycarbonate composite material of the enhanced LED lampshade.
According to the LED lampshade, the material is matched with PMMA resin to modify polycarbonate, so that the performance of the material has better matrix performance on the aspect of optical property, the interface reinforcing phase is added, the light transmittance of the LED lampshade is improved, the overall performance is more uniform and stable through functional additives such as a compatilizer and a dispersing agent, and the defects of agglomeration, halation, dark spots and the like are further overcome.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a polycarbonate composite material composition of an enhanced LED lampshade, which comprises the following components in parts by mass:
wherein the interface reinforcing phase is at least one of nano alumina crystal grains or whiskers.
According to the polycarbonate composite material composition, polymethyl methacrylate (PMMA) is added into the main material in an auxiliary mode, the PMMA high-performance optical liquid crystal material is mainly applied to a liquid crystal display light guide plate and an optical fiber material, the resin material is optimal in high brightness and has excellent brightness, and the optical performance of the polycarbonate main material can be improved by matching with polycarbonate.
On the basis of doping light scattering master batch and inorganic nano particles, the invention further adopts the addition of interface reinforcing phase nano alumina crystal grains or crystal whiskers; the nano aluminum oxide can be subjected to phase change in later resin curing molding, and can also strengthen the phase change toughening effect; in addition, the thermal mismatch of the nano aluminum oxide makes the aluminum oxide crystal grains in a pressed state in the composite material, microcracks are not easily formed at crystal grain interfaces, but a semi-coherent and co-doped structure is formed, and through increasing the crystal structure in the resin material, the energy loss in the photon propagation process is reduced, and the light diffusion and penetration degree is improved. After the extremely small amount of whiskers are doped and added, the photon diffusion capacity can be improved due to the typical quantum confinement effect of the whiskers; and the micro-filling of the whisker can also be beneficial to improving the mechanical property of the composite resin material, the mechanical acting force generally hardly passes through the whisker, and the whisker is easier to bypass the whisker and is close to the surface as much as possible to expand, namely deflection occurs, so that the mechanical property of the resin material is enhanced, and meanwhile, when the whisker or the fiber is pulled out, external force is needed to do work, and the enhancement effect is also achieved. Meanwhile, after the interface reinforcing phase is added into the composite resin material, the interface reinforcing phase is randomly and uniformly distributed in the light diffusion process, so that the light diffusion angle is favorably increased, and the light emitting surface is wider and uniform.
Meanwhile, methoxy polyglycol acetic acid is added into the resin composite material, so that the integral dispersing performance can be improved; because nano inorganic particles such as nano titanium dioxide, nano silicon dioxide, nano talcum powder and the like, light scattering master batches and interface reinforcing phases of inorganic components are added into the resin main materials; after the addition of the additives, stable dispersing performance needs to be ensured, because the nano-particle material has the characteristic of easy agglomeration, the dispersibility of the auxiliary agent is easy to be insufficient, so that the uniformity of the material on the whole is not enough, and phenomena such as halo or dark spot of light diffusion occur; therefore, in the invention, the methoxy polyglycol acetic acid is adopted to improve the dispersion performance based on the aim. The methoxy polyglycol acetic acid has the structure that the polyether main chain contains more C-O bonds, the dissociation energy of the C-O bonds is lower than that of the C-C bonds of the hydrocarbon long-chain polymer, and further the polyether main chain contains more propoxy groups (PO), the side methyl groups on the propoxy groups (PO) enable the main chain to be filled with branch points, methine hydrogen on the branch points is more easily abstracted, and the side methyl groups can weaken the bond energy of the C-C bonds and the C-O bonds on the polyether main chain, so that the thermal stability of the polyether main chain is further deteriorated. The thermal cracking begins to occur at the temperature higher than 160 ℃, and for the condition control of the preparation process of the composite resin material, the temperature condition of the processes of extrusion granulation and the like is generally between 250 and 270 ℃, and is higher than the degradation temperature of methoxy polyglycol acetic acid, so that the thermal degradation product with the end group structure of ketone, aldehyde, alcohol and ether is generated by degradation of the material in the preparation process, and the diffusion of the added inorganic components can be greatly promoted in the degradation stage; meanwhile, due to the ionic characteristics of acid dissociation and the like of the methoxy polyglycol acetic acid, the surface of the metal nano particles can be charged, and the stabilizing effect of electrostatic repulsion is generated among the metal nano particles, so that the agglomeration among the metal nano particles is prevented, and the improvement of the dispersion effect is facilitated. Further, in the present invention, it is preferable that the methoxypolyglycolacetic acid has a weight average molecular weight of 800 to 2000; when the weight average molecular weight is less than 800, the steric hindrance effect is reduced, which is not beneficial to improving the dispersibility of the nano particles; above 4000, the intermolecular force increases, the molecular chain lengthens, and the intermolecular entanglement probability increases, thereby reducing the thermal degradability.
Further, after the embodiment of the present invention is implemented, since PMMA, the organic dispersant and the inorganic additive are added to the polycarbonate material with a single material, the compatibility stability of the whole material is inevitably affected; therefore, MAH-g-EPDM is further added to be used as a compatilizer, so that the interface compatibility of all materials is improved. The reason is that EPDM itself has the lowest specific gravity among all rubbers, and it can absorb a large amount of filler and oil without greatly affecting the characteristics. Therefore, when the filling effect is optimal, the polycarbonate resin can be combined with other functional ingredient auxiliaries, so that the influence of unbalance of a large amount of additives of the polycarbonate material is reduced; the EPDM can overcome the problem of melt fracture in the process of basic granulation and solidification molding in the whole system, and avoids surface wave patterns, silver wires, flow marks and the like caused by the defect of 'tiger spots' appearing on the surface of resin. Further, the EPDM adopts maleic anhydride for grafting to form a block structure, and more active binding groups are added, so that the compatibility and combination among materials are facilitated.
Further, in the process of the above embodiment of the present invention, the inorganic nanoparticles are matched with different particle size types, and the coarse particle size: medium particle size: the proportion of three inorganic nano particles with different particle sizes is 4-6: 2-3: 1; because the nano inorganic particles are approximately in the particle size range of 10-100 nm, three types of different particle sizes of about 100nm, about 50nm and about 10nm can be approximately selected for compound use in the implementation process of the invention, and the reason is that the internal light diffusion of the resin can be further enhanced to be oriented for silicon-free deflection, and the uniformity of light diffusion is enhanced; in addition, when the resin material is used as the LED lampshade, after the LED lampshade is used for a period of time, some components in the material are subjected to cross polymerization, aging and the like, so that the problems of uneven light diffusion, halo and the like are easily caused; the invention changes the particle size of the nano particles into three different particle sizes for filling, and can increase the random degree of internal light diffusion; after the material is used for a period of time and the material is degraded in property and structure, the inorganic particles are not changed, so that the random directionality of light diffusion can be stabilized, and the defects such as halation and the like can be reduced.
Of course, in the further implementation process of the present invention, in order to ensure that the composite material can further have very good composite performance, other functional auxiliaries such as an antioxidant, an anti-ultraviolet agent added under the use requirement of the LED lamp cover, and the like can be added by those skilled in the art according to the required use requirement.
The functional additive can also be added with coumarin fluorescent whitening agents, so that the fluorescent whitening agents are beneficial to enabling the materials to receive and excite incident light to generate fluorescence, the materials can generate exciton-assisted luminescence, the intensity of light diffused and transmitted out of the composite material is improved, and the light transmittance is enhanced.
The invention further provides a preparation method of the polycarbonate composite material of the enhanced LED lampshade, which comprises the following steps:
s01, weighing the following formula components: weighing the components according to the formula of the polycarbonate composite material of the enhanced LED lampshade;
s02, preparing a mixed material: mixing the components weighed in the step S01 to obtain a mixed material;
s03, melt extrusion of the mixed material: and (4) performing melt extrusion on the mixed material in the step S02 to obtain the polycarbonate composite material of the enhanced LED lampshade.
Specifically, the formula of the polycarbonate composite material of the enhanced LED lampshade in the step S01 and the preferred content and type of each component in the formula are as described above, and are not repeated herein for brevity.
In the step S02, the time for mixing the components can be flexibly adjusted according to actual production conditions, as long as the components are premixed sufficiently, for example, the mixing device can be a mixing drum. In a preferred embodiment, the mixing treatment is to mix the components at a high speed (for example, the rotating speed is more than 300r/min) for 10-15 minutes, so that the components are uniformly mixed.
In the above step S03, the melt extrusion of the mixture may be performed by a conventional process in the art. In order to enable the components to have better synergistic effect in melt extrusion and endow the polycarbonate composite material of the enhanced LED lampshade with more excellent performance, in a preferred embodiment, the melt extrusion of the mixed materials is performed by adopting a double-screw extruder, and the extrusion process conditions are as follows:
the temperature of the first zone is 230-240 ℃, the temperature of the second zone is 240-250 ℃, the temperature of the third zone is 250-260 ℃, the temperature of the fourth zone is 245-255 ℃, the temperature of the fifth zone is 240-250 ℃, the conveying time of the mixture in the screw is 1-5 minutes, and the pressure is 10-20 MPa.
According to the preparation method of the polycarbonate composite material of the enhanced LED lampshade, the components are mixed according to the formula and are melted and extruded at a proper temperature to obtain a product, and the temperature and time of melting and extruding are controlled in the melting and extruding process. Therefore, the preparation method has the characteristics of simple process, easily controlled conditions, low cost and low equipment requirement, and is suitable for industrial production.
In order to make the implementation details of the above-mentioned method and process of the present invention more clear and complete, make implementation references easy for those skilled in the art, and make the outstanding progressive effects of the present invention more obvious, the implementation of the above-mentioned process is specifically exemplified by the following examples.
The raw materials were obtained according to the amounts of the materials corresponding to the examples in the table below:
then, the materials obtained in the above embodiments are mixed for 15 minutes at 400r/min by a mixing barrel, so that the components are uniformly mixed, and then the materials are melt-extruded by a double-screw extruder, wherein the temperature conditions in the extrusion process are controlled as follows:
the temperature of the first zone is 240 ℃, the temperature of the second zone is 250 ℃, the temperature of the third zone is 260 ℃, the temperature of the fourth zone is 255 ℃, the temperature of the fifth zone is 250 ℃, the conveying time of the mixture in the screw is 1-5 minutes, and the pressure is set to be 15 MPa.
The composite materials obtained in the above examples were then subjected to performance tests, as shown in the following table:
| test items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Tensile strength Mpa | 40 | 45 | 42 | 48 | 48 |
| Bending strength MPa | 75 | 72 | 60 | 68 | 70 |
| Total light transmittance% | 72％ | 69％ | 71％ | 74％ | 70％ |
| All in mist | 92％ | 94％ | 90％ | 93％ | 90％ |
Therefore, it can be seen from the results of the above performance and data tests that the mechanical properties of the material in the present application are slightly improved, and the improvement range is not large; however, the effect of the whole total light transmittance is remarkably improved, and compared with the light transmittance of the LED lampshade material in CN102532857A patent document, the light transmittance is improved by more than 10%, and the reason is also realized by the improvement of material components and internal light transmission light path in the invention. Compared with the performance of the prior resin material of the LED lampshade, the material has the characteristics of remarkable improvement compared with the CN102532857A patent document.
Therefore, on the basis, the invention further provides the LED lampshade prepared from the polycarbonate composite material of the enhanced LED lampshade.
According to the LED lampshade, the material is matched with PMMA resin to modify polycarbonate, so that the performance of the material has better matrix performance on the aspect of optical property, the interface reinforcing phase is added, the light transmittance of the LED lampshade is improved, the overall performance is more uniform and stable through functional additives such as a compatilizer and a dispersing agent, and the defects of agglomeration, halation, dark spots and the like are further overcome.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A polycarbonate material composition of an enhanced LED lampshade is characterized by comprising:
wherein the interface reinforcing phase is at least one of nano alumina crystal grains or whiskers.
2. The polycarbonate material composition for the enhancement type LED lampshade of claim 1, wherein the methoxypolyglycolacetic acid has a weight average molecular weight of 800-2000.
3. The polycarbonate material composition for an enhanced LED light shade according to claim 1 or 2, wherein the inorganic nanoparticles comprise a coarse particle size, a medium particle size, a fine particle size, which are sequentially decreasing in size; wherein the coarse particle size: medium particle size: the fine particle size is 4-6: 2-3: 1.
4. The polycarbonate material composition for the enhanced LED lampshade of claim 1 or 2, wherein the other functional auxiliaries comprise coumarin fluorescent whitening agents.
5. The polycarbonate material composition for the enhanced LED lampshade as claimed in claim 1 or 2, wherein the nano titanium dioxide, the nano silicon dioxide and the nano talcum powder are one or more.
6. A method for preparing the polycarbonate material of the enhanced LED lampshade of any one of the claims 1 to 5, which is characterized by comprising the following steps:
obtaining the material components according to the formula of the polycarbonate material composition of the enhanced LED lampshade corresponding to the claims 1 to 5;
mixing the obtained material components to obtain a mixed material;
and melting and extruding the mixed material to obtain the polycarbonate composite material of the enhanced LED lampshade.
7. The method for preparing the polycarbonate material for the enhanced LED lampshade as claimed in claim 6, wherein the melt extrusion process is carried out by a double-screw extruder; wherein,
the temperature of the first zone is 230-240 ℃, the temperature of the second zone is 240-250 ℃, the temperature of the third zone is 250-260 ℃, the temperature of the fourth zone is 245-255 ℃, and the temperature of the fifth zone is 240-250 ℃; the conveying time of the mixture in the screw is 1-5 minutes, and the pressure is 10-20 Mpa.
8. An LED lampshade made of the polycarbonate material of the enhanced LED lampshade made by the method of claim 6 or 7.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990022A (en) * | 2015-05-27 | 2015-10-21 | 安徽博昌电子科技股份有限公司 | Suction type emergency lamp |
| CN105153615A (en) * | 2015-10-09 | 2015-12-16 | 吴洲 | Matte and frosted polymethyl methacrylate (PMMA) transparent material |
| CN105199356A (en) * | 2015-10-13 | 2015-12-30 | 桂峰 | Nanoscale high-strength light-diffusion material as well as preparation method and application thereof |
| CN107286619A (en) * | 2017-06-21 | 2017-10-24 | 颍上昌盛电器有限公司 | A kind of environment-protecting LED lampshade formula and preparation method thereof |
| CN107298840A (en) * | 2017-07-03 | 2017-10-27 | 颍上昌盛电器有限公司 | A kind of formula of Novel LED lampshade |
| CN107312350A (en) * | 2017-07-03 | 2017-11-03 | 颍上昌盛电器有限公司 | A kind of formula of environment-protecting LED lampshade |
| CN108034068A (en) * | 2017-12-06 | 2018-05-15 | 曹结宾 | A kind of LED lamp cover and its processing technology |
| CN109901260A (en) * | 2019-04-28 | 2019-06-18 | 安徽帝显电子有限公司 | A kind of processing method of light guiding film |
| CN110669326A (en) * | 2019-10-17 | 2020-01-10 | 中山市华洋塑胶颜料有限公司 | Ultra-dispersed PC light diffusion master batch and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149579A1 (en) * | 2007-06-06 | 2008-12-11 | Sumitomo Dow Limited | Optical polycarbonate resin composition and optical molded article comprising the same |
| CN101367950A (en) * | 2008-08-22 | 2009-02-18 | 暨南大学 | Volume scattering polymer light conducting plate and preparation method for injection mould master batch |
| CN102245684A (en) * | 2008-12-08 | 2011-11-16 | 苏威股份有限公司 | Method for preparing a transparent polymer material including mineral nanoparticles with a shape factor strictly higher than 1.0 |
| CN102363668A (en) * | 2011-10-11 | 2012-02-29 | 金发科技股份有限公司 | Polycarbonate filled composite material |
| CN103772939A (en) * | 2013-12-25 | 2014-05-07 | 惠州市三鼎能源科技有限公司 | Cooling polycarbonate composite material and preparation method thereof as well as preparation method of daylight lamp holder bracket |
-
2014
- 2014-10-31 CN CN201410611976.2A patent/CN104356626B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149579A1 (en) * | 2007-06-06 | 2008-12-11 | Sumitomo Dow Limited | Optical polycarbonate resin composition and optical molded article comprising the same |
| CN101367950A (en) * | 2008-08-22 | 2009-02-18 | 暨南大学 | Volume scattering polymer light conducting plate and preparation method for injection mould master batch |
| CN102245684A (en) * | 2008-12-08 | 2011-11-16 | 苏威股份有限公司 | Method for preparing a transparent polymer material including mineral nanoparticles with a shape factor strictly higher than 1.0 |
| CN102363668A (en) * | 2011-10-11 | 2012-02-29 | 金发科技股份有限公司 | Polycarbonate filled composite material |
| CN103772939A (en) * | 2013-12-25 | 2014-05-07 | 惠州市三鼎能源科技有限公司 | Cooling polycarbonate composite material and preparation method thereof as well as preparation method of daylight lamp holder bracket |
Non-Patent Citations (1)
| Title |
|---|
| 纪传伟 等: "LED灯罩用光扩散聚碳酸酯材料", 《广东化工》, vol. 41, no. 281, 15 August 2014 (2014-08-15), pages 122 - 123 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990022A (en) * | 2015-05-27 | 2015-10-21 | 安徽博昌电子科技股份有限公司 | Suction type emergency lamp |
| CN104990022B (en) * | 2015-05-27 | 2017-08-08 | 明光泰源安防科技有限公司 | Absorption type is met an urgent need indicator lamp |
| CN105153615A (en) * | 2015-10-09 | 2015-12-16 | 吴洲 | Matte and frosted polymethyl methacrylate (PMMA) transparent material |
| CN105199356A (en) * | 2015-10-13 | 2015-12-30 | 桂峰 | Nanoscale high-strength light-diffusion material as well as preparation method and application thereof |
| CN107286619A (en) * | 2017-06-21 | 2017-10-24 | 颍上昌盛电器有限公司 | A kind of environment-protecting LED lampshade formula and preparation method thereof |
| CN107298840A (en) * | 2017-07-03 | 2017-10-27 | 颍上昌盛电器有限公司 | A kind of formula of Novel LED lampshade |
| CN107312350A (en) * | 2017-07-03 | 2017-11-03 | 颍上昌盛电器有限公司 | A kind of formula of environment-protecting LED lampshade |
| CN108034068A (en) * | 2017-12-06 | 2018-05-15 | 曹结宾 | A kind of LED lamp cover and its processing technology |
| CN109901260A (en) * | 2019-04-28 | 2019-06-18 | 安徽帝显电子有限公司 | A kind of processing method of light guiding film |
| CN109901260B (en) * | 2019-04-28 | 2020-07-14 | 安徽帝显电子有限公司 | Processing method of light guide film |
| CN110669326A (en) * | 2019-10-17 | 2020-01-10 | 中山市华洋塑胶颜料有限公司 | Ultra-dispersed PC light diffusion master batch and preparation method and application thereof |
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