CN103772940A - Light aging resistant photodiffusion polycarbonate composite material and preparation method thereof - Google Patents
Light aging resistant photodiffusion polycarbonate composite material and preparation method thereof Download PDFInfo
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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
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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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
- B29C48/92—Measuring, controlling or regulating
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to a light aging resistant photodiffusion polycarbonate composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 700-900 parts of polycarbonate aggregate, 100-300 parts of polycarbonate powder, 0.5-5 parts of photodiffusion agent, 2-8 parts of light stabilizer, 1-5 parts of antioxidant and 0.5-2 parts of processing agent. The light aging resistant photodiffusion polycarbonate composite material is prepared from the raw materials in high-speed mixing, extruding and pelletizing manners. The light aging resistant photodiffusion polycarbonate composite material disclosed by the invention has the advantages of being good in processing formability, good in light aging resisting performance, good in light transmittance and haze, and the like.
Description
Technical field
The invention belongs to technical field of polymer processing, relate to a kind of polycarbonate composite material and preparation method thereof, especially relate to light diffusing polycarbonate matrix material of a kind of light aging resisting and preparation method thereof.
Background technology
Polycarbonate resin is called for short PC, is a kind of broad-spectrum engineering plastics.PC resin has excellent mechanical characteristics, impact resistance and electrical insulation capability etc., becomes one of ideal material in the plastic components such as automobile, household electrical appliances; In addition PC is a kind of resin with very high light transmittance, is widely used in illuminating lamp shade, automobile-used tachometer gage, the fields such as car light, billboard, advertisement cabinet, resin glass, liquid crystal display.
Be accompanied by environmental protection, the social development demand such as energy-conservation, following lighting apparatus need to have the features such as high light efficiency, less energy-consumption, and PC material has good transmittance and mist degree, can obviously improve lighting area, alleviate the injury of light source to human eye, this novel material will be widely used in illuminating industry.But use the pure raw material of PC as printing opacity and throw light on while using material, can have the problems such as dazzling, lighting area is limited.In addition, because light source is in radioluminescence, also can produce a large amount of heats, cause the temperature of light fixture periphery higher, therefore, the plastic components of using as illuminating engineering, not only require material to there is good resistance to elevated temperatures, also need to there is excellent light aging resisting property.And the light aging resisting property of common PC material is poor, therefore, development has the light diffusing polycarbonate matrix material of light aging resisting, not only can enrich the selection of illuminating engineering material, improves the efficiency of lighting apparatus; Also be conducive to expand the Application Areas of PC matrix material, there is very important economic worth and practical value.
Summary of the invention
The object of the invention is the deficiency as printing opacity and illumination material for the pure raw material of PC, and light diffusing polycarbonate matrix material of a kind of light aging resisting and preparation method thereof is provided, the matrix material making has good light aging resisting property, transmittance and mist degree.
Object of the present invention can be achieved through the following technical solutions:
A light diffusing polycarbonate matrix material for light aging resisting, is characterized in that; This matrix material is prepared from by weight by following raw material:
700～900 parts of polycarbonate pellets;
100～300 parts of polycarbonate powders;
0.5～5 part of light diffusing agent;
2～8 parts of photostabilizers;
1～5 part, oxidation inhibitor;
0.5～2 part of processing aid.
Further, the melting index of described polycarbonate pellet under 300 ℃/1.2Kg condition is 5～30g/10min; The melting index of described polycarbonate powder under 300 ℃/1.2Kg condition is 10～20g/10min, and the particle size range of polycarbonate powder is 10～100um.
Described light diffusing agent is that silicon is light diffusing agent, and its outward appearance is that spherical granules, optical index are 1.4～1.5, average particle size range is 1～5um.
Described photostabilizer is poly-[6-[(1,1,3,3-tetramethyl butyl) amino]]-1,3,5-triazines-2,4-[(2,2,6,6,-tetramethyl-4-piperidyl) imino-]-1,6-oneself two support [(2,2,6,6-tetramethyl--4-piperidyl) imino-] (photostabilizer 944), 2-(2-hydroxy-5-methyl base-phenyl) benzotriazole (photostabilizer UV-P), two (2,2,6,6-tetramethyl--4-piperidyl) sebate (photostabilizer 770DF) and the tertiary octyl phenyl of 2-(2-hydroxyl-5-) at least one in azimidobenzene (photostabilizer 5411).
Described oxidation inhibitor is β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid (antioxidant 1076), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168) and four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (antioxidant 1010) is 1:2:1 mixing gained in mass ratio.
Described processing aid is two (the 5-tertiary butyl-2-benzoxazolyl) thiophene (whitening agent OB) mixtures of 73:23:1 in mass ratio of ultramarine, ultramarine violet and 2.5-.
Described ultramarine is that ultramarine 5006, ultramarine violet are ultramarine violet V-10.
Another object of the present invention is to provide the preparation method of the light diffusing polycarbonate matrix material of above-mentioned light aging resisting, comprises the following steps:
(1) by proportioning, polycarbonate pellet, polycarbonate powder, light diffusing agent, photostabilizer, oxidation inhibitor are placed in to high-speed mixer with processing aid and mix 3～15min, obtain mixture, the rotating speed of its mixing machine is 300～1500rpm;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtain the light diffusing polycarbonate matrix material pellet of light aging resisting, wherein twin screw extruder Ge district temperature and screw speed are respectively: 210～230 ℃ of district's temperature, two 220～240 ℃ of district's temperature, three 230～250 ℃ of district's temperature, four 240～260 ℃ of district's temperature, five 250～270 ℃ of district's temperature, six 250～270 ℃ of district's temperature, 250～260 ℃ of head temperatures; Screw speed is 200～400r/min.
Uneven for fear of the powder agglomeration occurring between light diffusing agent and polycarbonate pellet and dispersion, and cause matrix material to occur the problem that hot spot, brightness disproportionation and light transmission are poor, the present invention selects polycarbonate pellet and polycarbonate powder to carry out composite use, thereby improve the dispersiveness of light diffusing agent in matrix material, make matrix material there is the advantages such as the less and light of the good transparency, optical energy loss is soft, and expand light-emitting area.
In addition, in the present invention, the melting index of polycarbonate pellet used (300 ℃, 1.2Kg) is 5～30g/10min; The melting index (300 ℃, 1.2Kg) of described polycarbonate powder is that 10～20g/10min, particle size range are 10～100um.Thereby the injection mouldings such as the depression of further avoiding occurring in materials processing moulding process, weld mark, buckling deformation are bad, guarantee that material has good moulding processability.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, the present invention adopts conventional forming processing technology and equipment at present, has prepared the light diffusing polycarbonate matrix material of light aging resisting, and its preparation is simple, production cost is low.
2, select the composite of polycarbonate pellet and polycarbonate pellet powder, can improve the dispersiveness of light diffusing agent in matrix material, make matrix material there is the good transparency, expand the advantages such as the less and light of light-emitting area, optical energy loss is soft.
3, select the polycarbonate pellet of particular melt index and polycarbonate powder to carry out composite, the injection moulding such as the depression further avoiding occurring in materials processing moulding process, weld mark, buckling deformation is bad, guarantees that material has good moulding processability.
4, in the present invention, add light diffusing agent and photostabilizer, while making light pass through material, through refraction repeatedly, performance light diffusion and expand the effect of light-emitting area, reaches the soft less effect of optical energy loss that sees through of light.Add photostabilizer simultaneously, make the matrix material making there is good light aging resisting property.
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Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Following examples twin screw extruder used manufacturer is Kunshan Ke Xin rubber and plastics machine company limited;
Injection moulding machine used manufacturer is Zhejiang Haitian Machinery Co., Ltd.;
Polycarbonate pellet used manufacturer is Teijin Ltd;
Polycarbonate powder used manufacturer is Teijin Ltd;
Light diffusing agent Mai Tu TSR900 used manufacturer is U.S.'s Mitugao New Material Group;
X-52-7056A manufacturer of light diffusing agent used SHIN-ETSU HANTOTAI is group of SHIN-ETSU HANTOTAI;
Photostabilizer used 944 manufacturers are Shanghai Shao En Chemical Co., Ltd.;
Photostabilizer UV-P used and Guang Wenji 770DF manufacturer are Basf China Co., Ltd;
Photostabilizer used 5411 manufacturers are Qing Te Industrial Co., Ltd of the U.S.;
Antioxidant 1076 used and irgasfos 168 manufacturer are Switzerland's vapour Bagong department;
Antioxidant 1010 used manufacturer is Basf China Co., Ltd;
Ultramarine used 5006 manufacturers are Holliday pigment company of Britain;
Ultramarine violet V-10 used manufacturer is Niu Bilai pigment international trade (Shanghai) Co., Ltd.;
Whitening agent OB used manufacturer is Shanghai Lian Ben Fine Chemical Co., Ltd.Following examples agents useful for same only, for illustrating, is not limited to protection scope of the present invention, and other embodiments of the invention still can be selected all optional reagents within the scope of claim.If no special instructions, in embodiment, umber is weight part.
It is light diffusing agent that the light diffusing agent using in specific embodiment is below selected the silicon that spherical granules, optical index are 1.4～1.5, average particle size range is 1～5um, specifically has the figure of stepping TSR900 and the X-52-7056A of SHIN-ETSU HANTOTAI.
Described oxidation inhibitor is antioxidant 1076: irgasfos 168: antioxidant 1010 is 1:2:1 mixing gained.
Described ultramarine selects ultramarine 5006, ultramarine violet to select ultramarine violet V-10, and processing aid is ultramarine 5006, ultramarine violet V-10 and whitening agent OB 73:23:1 mixing gained in mass ratio.
embodiment 1
(1) by 700 parts of polycarbonate pellets, 300 parts of polycarbonate powders, 0.5 part of light diffusing agent steps figure TSR9002,5411,1 parts of oxidation inhibitor of 2 parts of photostabilizers, 0.5 part of processing aid; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 300rpm, and mixing time is 15min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder each district temperature and screw speed are respectively: 210 ℃ of district's temperature, two 220 ℃ of district's temperature, three 230 ℃ of district's temperature, four 240 ℃ of district's temperature, five 250 ℃ of district's temperature, six 260 ℃ of district's temperature, 250 ℃ of head temperatures; Screw speed 200r/min.The performance test results of resulting materials is in table 1.
embodiment 2
(1) by 800 parts of polycarbonate pellets, 200 parts of polycarbonate powders, 0.5 part of X-52-7056A of light diffusing agent SHIN-ETSU HANTOTAI, 944,1 parts of oxidation inhibitor of the steady agent of 5411,1 parts of light of 2 parts of photostabilizers, 1 part of processing aid; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 600rpm, and mixing time is 12min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder comprises Liu Ge district, and wherein each district temperature and screw speed are respectively: 220 ℃ of district's temperature, two 230 ℃ of district's temperature, three 240 ℃ of district's temperature, four 250 ℃ of district's temperature, five 260 ℃ of district's temperature, six 260 ℃ of district's temperature, 250 ℃ of head temperatures; Screw speed 300r/min.The performance test results of resulting materials is in table 1.
embodiment 3
(1) by 900 parts of polycarbonate pellets, 100 parts of polycarbonate powders, 0.5 part of X-52-7056A of light diffusing agent SHIN-ETSU HANTOTAI, 0.5 part of light diffusing agent steps figure TSR9002, the steady agent UV-P of 944,3 parts of light of 2 parts of photostabilizers, 3 parts of oxidation inhibitor, 2 parts of processing aids; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 900rpm, and mixing time is 9min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder comprises Liu Ge district, and wherein each district temperature and screw speed are respectively: 230 ℃ of district's temperature, two 230 ℃ of district's temperature, three 240 ℃ of district's temperature, four 260 ℃ of district's temperature, five 250 ℃ of district's temperature, six 250 ℃ of district's temperature, 255 ℃ of head temperatures; Screw speed 200r/min.The performance test results of resulting materials is in table 1.
embodiment 4
(1) by 700 parts of polycarbonate pellets, 300 parts of polycarbonate powders, 1 part of light diffusing agent steps figure TSR9002,3 parts of photostabilizer 770DF, 944,4 parts of oxidation inhibitor of 2 parts of steady agent of light, 0.5 part of processing aid; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 1200rpm, and mixing time is 6min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder comprises Liu Ge district, and wherein each district temperature and screw speed are respectively: 230 ℃ of district's temperature, two 240 ℃ of district's temperature, three 240 ℃ of district's temperature, four 260 ℃ of district's temperature, five 270 ℃ of district's temperature, six 270 ℃ of district's temperature, 260 ℃ of head temperatures; Screw speed 400r/min.The performance test results of resulting materials is in table 1.
embodiment 5
(1) by 800 parts of polycarbonate pellets, 200 parts of polycarbonate powders, 2 parts of light diffusing agents, 2 parts of photostabilizer 770DF, 3 parts of photostabilizer UV-P, 944,5 parts of oxidation inhibitor of 3 parts of photostabilizers, 1 part of processing aid; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 1500rpm, and mixing time is 3min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder comprises Liu Ge district, and wherein each district temperature and screw speed are respectively: 220 ℃ of district's temperature, two 230 ℃ of district's temperature, three 240 ℃ of district's temperature, four 250 ℃ of district's temperature, five 250 ℃ of district's temperature, six 250 ℃ of district's temperature, 245 ℃ of head temperatures; Screw speed 300r/min.The performance test results of resulting materials is in table 1.
embodiment 6
(1) by 900 parts of polycarbonate pellets, 100 parts of polycarbonate powders, 2 parts of light diffusing agents step figure TSR9002,3 parts of X-52-7056A of light diffusing agent SHIN-ETSU HANTOTAI, 5411,1 parts of photostabilizer UV-P of 3 parts of photostabilizers, 3 parts of oxidation inhibitor, 2 parts of processing aids; These raw materials are mixed at high-speed mixer, and mixing rotating speed is 800rpm, and mixing time is 8min, obtains mixture;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtains the light diffusing polycarbonate matrix material pellet of light aging resisting.Twin screw extruder comprises Liu Ge district, and wherein each district temperature and screw speed are respectively: 210 ℃ of district's temperature, two 220 ℃ of district's temperature, three 230 ℃ of district's temperature, four 240 ℃ of district's temperature, five 250 ℃ of district's temperature, six 260 ℃ of district's temperature, 250 ℃ of head temperatures; Screw speed 200r/min.The performance test results of resulting materials is in table 1.
In above-described embodiment 1-6, gained extruded stock grain, carries out injection moulding by ASTM standard respectively, and injection moulding batten is tested stablize 48h under 23 ℃, relative humidity 50% condition after.Transmittance and mist degree are tested according to ASTM D1003-11e1, and selecting thickness of test piece is 2.5mm.Light aging resisting property test is carried out in QUV weatherometer, and aging cycling condition is: illumination in 8 hours, and wavelength 313nm, intensity is 0.48W/m
2, temperature 70 C; 4 hours dark, temperature 50 C, test result is shown in Table 1:
Table 1
Note: comparative sample is the pure raw material of PC, according to the same terms, tests rear acquired results.
Known by the performance test results contrast in table 1, the light diffusing polycarbonate matrix material of light aging resisting prepared by the present invention, has good light aging resisting property; It,, in keeping compared with high light transmittance, has good light diffusing energy, can expand light-emitting area and reach the effect that light is soft; In addition,, in keeping high mist degree, can adjust as required different transmittances.So in the fields such as automobile making, household electrical appliances, illuminating engineering articles for use, for light spreads the plastic items that has requirement, the light diffusing polycarbonate matrix material of this light aging resisting is a kind of well selection, has good practical value and economic worth.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (7)
1. a light diffusing polycarbonate matrix material for light aging resisting, is characterized in that; This matrix material is prepared from by weight by following raw material:
700～900 parts of polycarbonate pellets;
100～300 parts of polycarbonate powders;
0.5～5 part of light diffusing agent;
2～8 parts of photostabilizers;
1～5 part, oxidation inhibitor;
0.5～2 part of processing aid.
2. the light diffusing polycarbonate matrix material of a kind of light aging resisting according to claim 1, is characterized in that: the melting index of described polycarbonate pellet under 300 ℃/1.2Kg condition is 5～30g/10min; The melting index of described polycarbonate powder under 300 ℃/1.2Kg condition is 10～20g/10min, and the particle size range of polycarbonate powder is 10～100um.
3. the light diffusing polycarbonate matrix material of a kind of light aging resisting according to claim 1, is characterized in that: described light diffusing agent is that silicon is light diffusing agent, and its outward appearance is that spherical granules, optical index are 1.4～1.5, average particle size range is 1～5um.
4. the light diffusing polycarbonate matrix material of a kind of light aging resisting according to claim 1, it is characterized in that: described photostabilizer is poly-[6-[(1,1,3,3-tetramethyl butyl) amino]]-1,3,5-triazine-2,4-[(2,2,6,6 ,-tetramethyl-4-piperidyl) imino-]-1, oneself two supports [(2 of 6-, 2,6,6-tetramethyl--4-piperidyl) imino-], 2-(2-hydroxy-5-methyl base-phenyl) benzotriazole, two (2,2,6,6-tetramethyl--4-piperidyl) sebate and the tertiary octyl phenyl of 2-(2-hydroxyl-5-) at least one in azimidobenzene.
5. the light diffusing polycarbonate matrix material of a kind of light aging resisting according to claim 1, it is characterized in that: described oxidation inhibitor is β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester and four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester is 1:2:1 mixing gained in mass ratio.
6. the light diffusing polycarbonate matrix material of a kind of light aging resisting according to claim 1, it is characterized in that, described processing aid is two (the 5-tertiary butyl-2-benzoxazolyl) the thiophene mixtures of 73:23:1 in mass ratio of ultramarine, ultramarine violet and 2.5-.
7. prepare as a method for the light diffusing polycarbonate matrix material of the light aging resisting as described in arbitrary in claim 1～6, it is characterized in that: comprise the following steps:
(1) by proportioning, polycarbonate pellet, polycarbonate powder, light diffusing agent, photostabilizer, oxidation inhibitor are placed in to high-speed mixer with processing aid and mix 3～15min, obtain mixture, the rotating speed of its mixing machine is 300～1500rpm;
(2) step (1) gained mixture is added to twin screw extruder, extruding pelletization, obtain the light diffusing polycarbonate matrix material pellet of light aging resisting, wherein twin screw extruder Ge district temperature and screw speed are respectively: 210～230 ℃ of district's temperature, two 220～240 ℃ of district's temperature, three 230～250 ℃ of district's temperature, four 240～260 ℃ of district's temperature, five 250～270 ℃ of district's temperature, six 250～270 ℃ of district's temperature, 250～260 ℃ of head temperatures; Screw speed is 200～400r/min.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111732823A (en) * | 2020-07-07 | 2020-10-02 | 佛山市德联邦盛光电科技股份有限公司 | SEBS toughened diffuser plate |
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| US10632660B2 (en) | 2017-01-12 | 2020-04-28 | Sabic Global Technologies B.V. | Method to improve optical properties of stabilized polycarbonate compositions |
| CN108841157A (en) * | 2018-06-13 | 2018-11-20 | 安徽理工大学 | A kind of graphene PC composite material and preparation method of electromagnetic shielding |
| CN108841157B (en) * | 2018-06-13 | 2020-09-29 | 安徽理工大学 | Electromagnetic shielding graphene PC composite material and preparation method thereof |
| CN108976748A (en) * | 2018-07-17 | 2018-12-11 | 蓝晓锋 | A kind of PC light diffusion Masterbatch and preparation method thereof |
| CN112300555A (en) * | 2019-07-29 | 2021-02-02 | 广州合成材料研究院有限公司 | Flame-retardant polycarbonate material marked by laser and preparation method and application thereof |
| CN112300554A (en) * | 2019-07-29 | 2021-02-02 | 广州合成材料研究院有限公司 | Flame-retardant polycarbonate with carbon nano tube enhanced laser marking and application thereof |
| CN113088058A (en) * | 2019-12-23 | 2021-07-09 | 中石化南京化工研究院有限公司 | Polycarbonate-based light diffusion material for automobile lamp shade and preparation method thereof |
| CN111205620A (en) * | 2020-02-28 | 2020-05-29 | 深圳飞德利照明科技有限公司 | Polycarbonate lens for LED illumination and preparation method thereof |
| CN111732823A (en) * | 2020-07-07 | 2020-10-02 | 佛山市德联邦盛光电科技股份有限公司 | SEBS toughened diffuser plate |
| CN112625422A (en) * | 2020-12-25 | 2021-04-09 | 佛山市达孚新材料有限公司 | Polycarbonate material and preparation method thereof |
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