CN104650567A - High-performance photo-diffusive PC raw material - Google Patents
High-performance photo-diffusive PC raw material Download PDFInfo
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- CN104650567A CN104650567A CN201510074410.5A CN201510074410A CN104650567A CN 104650567 A CN104650567 A CN 104650567A CN 201510074410 A CN201510074410 A CN 201510074410A CN 104650567 A CN104650567 A CN 104650567A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a high-performance photo-diffusive PC raw material and belongs to a transparent material. The existing transparent material is low in light transmittance and the lighting sheet is non-uniform in darkness. By taking polycarbonate as a base material, a light diffusant is added into the base material for polymerization. The light diffusant consists of polymethyl methacrylate, a brightening agent, an antioxidant, a transparent flame retardant and methylsilicone oil. The components are polymerized by weight: 100+/-5g of polycarbonate, 200+/-10g of polymethyl methacrylate, 50+/-2g of the brightening agent, 300+/-15g of the antioxidant, 100+/-5g of the transparent flame retardant and 250+-12g of methylsilicone oil. The diffusion rate of the prepared transparent plate can reach 99%, the transparent plate is uniform in dispersion and free of crystal points, and the light transmittance reaches 86-95%. The brightness is over 2 times of a conventional lampshade, the service life can reach 9-10 years, and the raw material is not color-changing in the midway, does not yellow and still look new. The raw material disclosed by the invention is commonly used for LED bulb lamps, LED fluorescent lamps, LED digitrons, LED tunnel lamps, LED street lamps, LED ceiling lamps and the like.
Description
Technical field
The invention belongs to light transmissive material, be specifically related to a kind of high-performance optical diffusion PC raw material.
Background technology
The main building block that lighting sheet is super bath, part of throwing light on is pushed up in product in bath, it is in the light source of interiors of products and the middle part of outside environment for use, plays isolation and decoration function, general employing acrylic or PC material.But there is certain problem or deficiency in these materials: one is that acrylic material is frangible, chance ultraviolet is easy to change, two is that after PC material has added look film, transmittance has only had 50-60%, if reduce look film ratio, lighting sheet just seems dark irregular, and therefore, two kinds of materials are all undesirable.In order to ensure the transmittance (reaching more than 70%) of lighting sheet, and the darkness of lighting sheet is even, it is desirable to develop a kind of light diffusing particles material, and this material can actually be used on the lighting sheet of product.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition overcomes that existing light transmissive material transmittance is low, the dark irregular defect of lighting sheet, provides a kind of high-performance optical to spread PC raw material.
For achieving the above object, high-performance optical diffusion PC raw material of the present invention, take polycarbonate as base material, in base material, add light diffusing agent be polymerized, described light diffusing agent is made up of polymethylmethacrylate, whitening agent, oxidation inhibitor, transparent flame-retarding agent, methyl-silicone oil, and described each component is polymerized according to following quality proportioning:
Polycarbonate 100 ± 5kg,
Polymethylmethacrylate 200 ± 10g,
Whitening agent 50 ± 2g,
Antioxidant 300 ± 15g,
Transparent flame-retarding agent 100 ± 5g,
Methyl-silicone oil 250 ± 12g.
As optimization technique means: the mass percent that described polymethylmethacrylate accounts for total amount is between 0.1-1%, the mass percent that methyl-silicone oil accounts for total amount is 0.1-0.3%.
As optimization technique means: melt flow rate (MFR) (300 DEG C, 1.2kg) selected by described base-material, the polycarbonate of 11-15g/10min; Or select melt flow rate (MFR) (300 DEG C, 1.2kg), the polycarbonate of 18-23g/10min.
As optimization technique means: be injection molded into this raw material the lighting sheet that wall thickness is 1-2mm.
The invention has the beneficial effects as follows: the printing opacity version diffusivity made can reach 99%, and be uniformly dispersed without brilliant point, transmittance reaches 86-95%, brightness is more than 2 times of traditional lampshade, and work-ing life can for 9-10, and midway nondiscoloration is non-yellowing, still as new.
Be usually used in LEDbulb lamp, LED daylight lamp, LED charactron, LED tunnel lamp, LED street lamp, LED lamp affixed to the ceiling etc.
Embodiment
High-performance optical diffusion PC raw material of the present invention, with polycarbonate (English Polycarbonate by name, be called for short PC) be base material, in base material, add light diffusing agent be polymerized, light diffusing agent is by polymethylmethacrylate (English PolymethylMethacrylate by name, abbreviation code name is PMMA), whitening agent (whitening agent English brightener/Optical whitener by name, as white dyes KSN, white dyes KSN also named 4, two (5 methyl-2-benzoxazolyl) toluylene of 4-, FBA368), oxidation inhibitor is (as pentanoic, Ursol D and dihydroquinoline etc.), transparent flame-retarding agent (as perfluorobutyl potassium), methyl-silicone oil forms, each component is polymerized according to following quality proportioning:
Polycarbonate 100 ± 5kg,
Polymethylmethacrylate 200 ± 10g,
Whitening agent 50 ± 2g,
Antioxidant 300 ± 15g,
Transparent flame-retarding agent 100 ± 5g,
Methyl-silicone oil 250 ± 12g.
Polymethylmethacrylate follows the performance of methyl-silicone oil joint effect light diffusion, and both are synergistic effects.Be in particular in, light diffusion transmittance is followed the amount of methyl-silicone oil to increase along with polymethylmethacrylate and reduces, and shaded effect then increases.Maximum performance point, depends on the LED power that client provides completely, LED lamp bead arrangement, quantity, and distance lampshade distance and lampshade light that thickness determines spread concrete proportioning.In brief, within the scope of rational proportion, debug out the most high transmission rate be applicable under the best shading of specific product.Preferably, the mass percent that polymethylmethacrylate accounts for total amount is between 0.1-1%, and the mass percent that methyl-silicone oil accounts for total amount is 0.1-0.3%.
In actual proportioning, each component carries out according to the quality proportioning of polycarbonate 100kg, polymethylmethacrylate 200g, whitening agent 50g, antioxidant 300 g, transparent flame-retarding agent 100g, methyl-silicone oil 250g being polymerized the product performance the best obtained.
For injection moulding performance impact, mainly depend on the selection of base-material and the amount of methyl-silicone oil.General, melt flow rate (MFR) (300 DEG C, 1.2kg) selected by base-material, the polycarbonate of 11-15g/10min.Larger for product size, wall is thin, the product that structure is more complicated, and melt flow rate (MFR) (300 DEG C, 1.2kg) selected by base-material, and the polycarbonate of 18-23g/10min, is convenient to injection moulding.The number of methyl-silicone oil amount affects release property, and (methyl-silicone oil plays a booster action for release property, general addition is accounting for the 2-3% of total amount, lower than 2%, help not to be obvious to release property, higher than 3%, at mixing step too thickness, be unfavorable for pulvis auxiliary agent attachment particle surface, affect modified effect.Because methyl-silicone oil is in the present invention also together with polymethylmethacrylate, there is individual synergistic effect, so methyl-silicone oil optimum addition is limited to aforementioned range in the present invention to light diffusion.In brief, be added with and help the demoulding, but special emphasis is still the light diffusion of the common synergistic with polymethylmethacrylate in the present invention).
During embody rule, be injection molded into high-performance optical diffusion PC raw material of the present invention the lighting sheet that wall thickness is 1-2mm.
Injection moulding is produced and can be carried out as follows:
1, sweep work to carrying out health around production line before producing, watering is made sure to keep in mind on ground, prevents dust from flying upward;
2, above light diffusing agent is according to rocking evenly at bag film after weighing well;
3, first throw PC raw material during batch mixing, then put methyl-silicone oil, stir 2-3 minute, then drop into all the other components, then stir 2-3 minute, be namely available on the machine production;
4, production process makes sure to keep in mind to control the extruder temperature of injection moulding machine, observes pelletizing situation and particle color and luster and stain at any time.
Claims (5)
1. high-performance optical diffusion PC raw material, it is characterized in that: take polycarbonate as base material, in base material, add light diffusing agent be polymerized, described light diffusing agent is made up of polymethylmethacrylate, whitening agent, oxidation inhibitor, transparent flame-retarding agent, methyl-silicone oil, and described each component is polymerized according to following quality proportioning:
Polycarbonate 100 ± 5kg,
Polymethylmethacrylate 200 ± 10g,
Whitening agent 50 ± 2g,
Antioxidant 300 ± 15g,
Transparent flame-retarding agent 100 ± 5g,
Methyl-silicone oil 250 ± 12g.
2. high-performance optical diffusion PC raw material according to claim 1, it is characterized in that: the mass percent that described polymethylmethacrylate accounts for total amount is between 0.1-1%, the mass percent that methyl-silicone oil accounts for total amount is 0.1-0.3%.
3. high-performance optical diffusion PC raw material according to claim 1, is characterized in that: melt flow rate (MFR) (300 DEG C, 1.2kg) selected by described base-material, the polycarbonate of 11-15g/10min.
4. high-performance optical diffusion PC raw material according to claim 1, is characterized in that: melt flow rate (MFR) (300 DEG C, 1.2kg) selected by described base-material, the polycarbonate of 18-23g/10min.
5. high-performance optical diffusion PC raw material according to claim 1, is characterized in that: be injection molded into this raw material the lighting sheet that wall thickness is 1-2mm.
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| CN201510074410.5A CN104650567A (en) | 2015-02-12 | 2015-02-12 | High-performance photo-diffusive PC raw material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019100311A1 (en) * | 2017-11-24 | 2019-05-31 | 苏州康邦新材料有限公司 | Light diffusion polycarbonate light tube for light-emitting diode lamp and manufacturing method therefor |
| CN114395237A (en) * | 2021-12-23 | 2022-04-26 | 青岛国恩科技股份有限公司 | Laser-engravable photodiffusion flame-retardant PC material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114395237A (en) * | 2021-12-23 | 2022-04-26 | 青岛国恩科技股份有限公司 | Laser-engravable photodiffusion flame-retardant PC material and preparation method thereof |
| CN114395237B (en) * | 2021-12-23 | 2023-09-08 | 青岛国恩科技股份有限公司 | Light diffusion flame-retardant PC material capable of being laser-carved and preparation method thereof |
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Application publication date: 20150527 |