CN102250462B - Polycarbonate composite material and preparation method thereof and method for manufacturing LED (Light Emitting Diode) lamp housing - Google Patents
Polycarbonate composite material and preparation method thereof and method for manufacturing LED (Light Emitting Diode) lamp housing Download PDFInfo
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Abstract
The invention discloses a polycarbonate (PC) composite material and a preparation method thereof and a method for manufacturing an LED (Light Emitting Diode) lamp housing. The composite material is prepared from the following components in percentage by weight: 84-98.59 percent of polycarbonate resin, 0.01-8 percent of light diffusant, 1-5 percent of silicone resin, 0.1-1 percent of processing agent, 0.1-1 percent of thermal stabilizer, 0.1-1 percent of light stabilizer and 0.1-1 percent of processing aid. In the invention, the light diffusant is processed by using epoxy resin, so that the interfacial bond of the light diffusant and polycarbonate is improved, and the solvent-stress-resistant cracking performance of the PC composite material is decreased. Ordered arrangement of polycarbonate molecules is increased and the internal stress is reduced under optimized injection mould temperature; and the minimum influence of a toughening component on the transparency of a final lamp housing product is guaranteed by adding the silicone resin with refractive index of 1.587 and toughening effect. The reduction in impact strength of the lamp housing product brought by higher mould temperature during injection molding can be compensated by adding the silicone resin. The light diffusion PC material with a balance among light transmittance, haze and diffusion angle is obtained by adding the light diffusant, so that an LED lamp emits non-dazzling, soft and pleasant light.
Description
Technical field
The invention belongs to chemical material technical field, specifically, relate to the method for a kind of polycarbonate composite material and technology of preparing thereof and making LED lampshade.
Background technology
Polycarbonate resin is called for short PC; Be a kind of in the engineering plastics; As the material that is widely used, PC has self characteristics and relative merits, and PC is a kind of armorphous thermoplastic resin of high comprehensive performance; Have excellent electrical insulating property, extensibility, dimensional stability and resistance to chemical corrosion, higher intensity, thermotolerance and winter hardiness; Also have simultaneously from put out, advantage such as fire-retardant, nontoxic, pigmentable.
But one of shortcoming of PC is the resisting environmental stress and cracking ability.Especially after sneaking into thermosetting resin or cross-linked resin or inorganic particulate or solvent contact such as sanitising agent, be more prone to cracking.In the daily life, it also is so that household goods need frequent wiping dust, LED lampshade, but PC is prone to produce stress cracking, under the effect of sanitising agent, very easily cracks even breaks, and influences the use of LED light fixture.The goods that the PC material makes also can use carbon tetrachloride solution to soak the PC material product on characterizing and quicken the cracking experiment because the cracking that environmental activity or contact sanitising agent produce can be set about by the stress crack resistant that improves goods.
Prior art has been done useful exploration to the above shortcoming of PC.People's (plastics industries such as Chinese patent CN1338488A, CN1400249A, CN1653134A, CN1556822A and Chen Zhenjia; 2009 the 8th phases the 37th volume; 18 pages ~ 21 pages); Adopt the compatilizer that PC and PBT blend, PC and spun glass blend, PC and ABS and the blend of a kind of C9 petroleum naphtha, PC and ABS high glue powder and alkaline oxalic acid aluminium and polytetrafluoroethylblended blended, PC and PET blend are added the GMA group simultaneously to improve anti-solvent and the stress crack resistance performance of PC respectively; But above method will cause end article to completely lose the transparency, be not suitable for using as lampshade in the lamp lighting industry.
Chinese patent CN101628983A points out that the coupling agent treatment pigment that adopts silicone to dilute improves the stress cracking resistance of painted PC then with the PC blend; That this method has adopted highly volatile and be prone to make the neuroplegic acetone of people and it directly is exposed in the environment, the operator is damaged and pollutes the environment.
Thereby the lax behavior that Chinese patent CN 101885240A improves the PC building block through the method that will extrude polycarbonate film and heat aftertreatment reduces the inner stress raisers of goods and reduces the stress cracking problem.But it is local-crystalized that this heat treatment mode makes that very easily the PC material takes place, thereby the shock strength of goods is sharply descended.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of excellent performance is provided, detergent-resistant polycarbonate composite material.
To achieve these goals, the present invention adopts following technical scheme:
A kind of polycarbonate composite material, process by the component of following weight percent meter:
Polycarbonate resin 84 ~ 98.59%
Light diffusing agent 0.01 ~ 8%
Silicone resin 1 ~ 5%
Treatment agent 0.1 ~ 1%
Thermo-stabilizer 0.1 ~ 1%
Photostabilizer 0.1 ~ 1%
Processing aid 0.1 ~ 1%.
In above-mentioned polycarbonate composite material, said polycarbonate resin preferred molten index is 1.2kg, 300 ℃, 6 ~ 70g/10min.
In above-mentioned polycarbonate composite material, described thermo-stabilizer is preferably the mixture by mass ratio 1:1 of antioxidant 1010 and oxidation inhibitor 168.
In above-mentioned polycarbonate composite material, the photostabilizer trade mark that said photostabilizer is preferably BASF AG is 770.
In above-mentioned polycarbonate composite material, the liquid silicone trade mark that described silicone resin is preferably Dow Corning Corporation is FCA-117, and specific refractory power is 1.587.
In above-mentioned polycarbonate composite material, described processing aid is preferably the white dyes OB-1 of BASF AG.
In above-mentioned polycarbonate composite material, described preferred light diffusant is ROHM AND HAAS EXL5136 and the 1000 order lime carbonate mixture according to mass ratio 1:1.
In above-mentioned polycarbonate composite material, described treatment agent is preferably the epoxy resin that Shanghai Wen Ding company produces, and the trade mark is 7072.
Another object of the present invention provides the preparation method of above-mentioned polycarbonate composite material, comprises the steps:
Earlier light diffusing agent and treatment agent are stirred at stirrer by formula rate, and then with polycarbonate resin, thermo-stabilizer, photostabilizer and processing aid add mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system, it is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material.
Further purpose of the present invention provides the method for utilizing above-mentioned polycarbonate composite material to prepare the LED lampshade, comprises the steps:
(1) the LED lampshade is processed mould by desired shape;
(2) said polycarbonate composite material is pressed the mould once injection moulding in injection moulding machine, die temperature need be set at 100 ~ 120 ℃ during injection moulding; And assembling, test step, be packaged into finished product after qualified.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts eco-friendly epoxy resin to handle light diffusing agent, makes epoxy resin be wrapped in the light diffusing agent particle surface, improves the interface bonding of light diffusing agent and polycarbonate, reduces the stress cracking performance of anti-solvent of PC matrix material;
(2) the present invention reduces internal stress through the ordered arrangement of preferred injection mold temperature increase polycarbonate molecule, promptly further improves the anti-solvent properties of lampshade;
(3) the present invention is 1.587 the silicone resin that plays toughening effect through adding specific refractory power, brings into play itself and the approaching characteristic of PC specific refractory power (1.585 ~ 1.587), farthest guarantees the transparency influence minimum of toughness reinforcing composition to final lampshade product.And the shock strength of the higher lampshade goods that bring of die temperature reduced when the adding silicone resin can compensate because of injection molded.
(4) the present invention can obtain transmittance, mist degree and spread angle equilibrated light diffusion PC material through adding light diffusing agent, makes the LED light fixture send dazzling, not soft pleasing light.
Embodiment
Below further specify the present invention through embodiment.Transmittance and mist degree carry out according to ASTM D1003.
The melting index of the polycarbonate resin that the following example is used is 1.2kg, 300 ℃, 6 ~ 70g/10min.
Thermo-stabilizer is the mixture by mass ratio 1:1 of antioxidant 1010 and oxidation inhibitor 168.
Photostabilizer is that the photostabilizer trade mark of BASF AG is 770.
Silicone resin is that the liquid silicone trade mark of Dow Corning Corporation is FCA-117, and specific refractory power is 1.587.
Processing aid is the white dyes OB-1 of BASF AG.
Light diffusing agent is ROHM AND HAAS EXL5136 and the 1000 order lime carbonate mixture according to mass ratio 1:1.
Treatment agent is the epoxy resin that Shanghai Wen Ding company produces, and the trade mark is 7072.
Embodiment 1:
Earlier with 0.1 gram light diffusing agent and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 985.9 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 87% simultaneously, and mist degree is 10%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 2:
Earlier with 40 gram light diffusing agents and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 946 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 65% simultaneously, and mist degree is 88%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 3:
Earlier with 80 gram light diffusing agents and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 906 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 47% simultaneously, and mist degree is 95%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 4:
Earlier with 80 gram light diffusing agents and 5 gram treatment agents in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 887 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 25 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 45% simultaneously, and mist degree is 96%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 5:
Earlier with 80 gram light diffusing agents and 10 gram treatment agents in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 857 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 50 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 40% simultaneously, and mist degree is 99%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 6:
Earlier with 80 gram light diffusing agents and 10 gram treatment agents in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 857 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 50 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 120 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 40% simultaneously, and mist degree is 99%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Embodiment 7:
Earlier with 80 gram light diffusing agents and 10 gram treatment agents in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 857 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 50 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 110 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 40% simultaneously, and mist degree is 99%, and the light comfort level is good, can be used as wash resistant agent LED lampshade and uses.
Comparative Examples 1:
Will through accurate metering 987 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid add together mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes is immersed 10 days crackings in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream); The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, cracking.The transmittance of lampshade is 88% simultaneously, and mist degree is 2%, and the light comfort level is good, can not use as wash resistant agent LED lampshade.
Comparative Examples 2:
Earlier with 0.1 gram light diffusing agent and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 946 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; All materials through twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes is immersed 10 days crackings in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream); The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, cracking.The transmittance of lampshade is 87.5% simultaneously, and mist degree is 10.8%, and the light comfort level is good, can not use as wash resistant agent LED lampshade.
Comparative Examples 3:
Earlier with 0.1 gram light diffusing agent through accurate metering 986.9 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid add together mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature need be set at 100 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes is immersed 10 days crackings in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream); The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, cracking.The transmittance of lampshade is 65% simultaneously, and mist degree is 88%, and the light comfort level is good, can not use as wash resistant agent LED lampshade.
Comparative Examples 4:
Earlier with 40 gram light diffusing agents and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 946 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature is set at 90 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes is immersed 10 days crackings in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream); The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, cracking.The transmittance of lampshade is 65% simultaneously, and mist degree is 88%, and the light comfort level is good, can not use as wash resistant agent LED lampshade.
Comparative Examples 5:
Earlier with 40 gram light diffusing agents and 1 gram treatment agent in impeller with 100 ℃ of high-speed stirring 20min; After obtaining handling light diffusing agent; With add through accurate metering 946 gram polycarbonate resins, 1 gram thermo-stabilizer, 1 gram photostabilizer and 1 gram processing aid mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add 10 gram silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system; It is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through the twin screw extruder plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material;
Is polycarbonate composite material parts by washing composition LED lampshade mould once injection moulding with the polycarbonate composite material of above-mentioned making in general injection moulding machine, and die temperature is set at 130 ℃ during injection moulding; And assembling, test step, be packaged into the lampshade finished product after qualified.The lampshade that makes immersed in the household cleaners (Astonish produces domestic multipurpose general-purpose decontamination cream) do not ftracture in 10 days; The lampshade that makes is immersed CCl
4In 5 seconds to 1 minute, do not ftracture.The transmittance of lampshade is 65% simultaneously, and mist degree is 88%, and the light comfort level is good, can not use as wash resistant agent LED lampshade.Because die temperature is 130 ℃ during injection molded, near the second-order transition temperature (second-order transition temperature of PC is 140 ℃) of polycarbonate material, need long cooling time during the lampshade injection molded, injection moulding efficient is very low, is not suitable for producing in batches.
Claims (7)
1. polycarbonate composite material, it is characterized in that: the component by following weight percent meter is processed:
Polycarbonate resin 84 ~ 98.59%;
Light diffusing agent: 0.01 ~ 8%,
Said light diffusing agent is mixed according to mass ratio 1:1 by ROHM AND HAAS EXL5136 and 1000 order lime carbonate;
Silicone resin: 1 ~ 5%,
Said silicone resin is that the trade mark is that FCA-117, specific refractory power are 1.587 liquid silicones by Dow Corning Corporation's production;
Treatment agent: 0.1 ~ 1%,
Said treatment agent for produce by Shanghai Wen Ding company, the trade mark is 7072 epoxy resin;
Thermo-stabilizer 0.1 ~ 1%;
Photostabilizer 0.1 ~ 1%;
Processing aid 0.1 ~ 1%.
2. polycarbonate composite material as claimed in claim 1 is characterized in that: the melting index of said polycarbonate resin is 1.2kg, 300 ℃, 6 ~ 70g/10min.
3. polycarbonate composite material as claimed in claim 1 is characterized in that, described thermo-stabilizer is the mixture by mass ratio 1:1 of antioxidant 1010 and oxidation inhibitor 168.
4. polycarbonate composite material as claimed in claim 1 is characterized in that, said photostabilizer is that the photostabilizer trade mark of BASF AG is 770.
5. polycarbonate composite material as claimed in claim 1 is characterized in that, described processing aid is the white dyes OB-1 of BASF AG.
6. the preparation method of the said polycarbonate composite material of claim 1 is characterized in that comprising the steps:
Earlier light diffusing agent and treatment agent are stirred at stirrer by formula rate, and then with polycarbonate resin, thermo-stabilizer, photostabilizer and processing aid add mix 10-20 minute in the mixing machine after, add the double-screw extruding pelletizing machine again; Add silicone resin through twin screw extruder the 3rd joint cylindrical shell through the liquid injection system, it is 100 ℃ that the liquid injection system is set the material Heating temperature, all materials through plasticizing extrude, tie rod, cooling, pelletizing, homogenizing process polycarbonate composite material.
7. the making method of a LED lampshade is characterized in that comprising the steps:
(1) the LED lampshade is processed mould by desired shape;
(2) the said polycarbonate composite material of claim 1 is pressed the mould once injection moulding in injection moulding machine, die temperature need be set at 100 ~ 120 ℃ during injection moulding; And assembling, test step, be packaged into finished product after qualified.
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| CN2011101515459A CN102250462B (en) | 2011-06-08 | 2011-06-08 | Polycarbonate composite material and preparation method thereof and method for manufacturing LED (Light Emitting Diode) lamp housing |
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| JP5230056B2 (en) * | 2004-04-14 | 2013-07-10 | 出光興産株式会社 | Light diffusing resin composition |
| JP5063873B2 (en) * | 2005-07-05 | 2012-10-31 | 出光興産株式会社 | Light diffusing polycarbonate resin composition and light diffusing plate using the resin composition |
| JP5305798B2 (en) * | 2008-09-11 | 2013-10-02 | 三菱エンジニアリングプラスチックス株式会社 | Aromatic polycarbonate resin composition, molded article and lighting member comprising the same |
| JP5370999B2 (en) * | 2009-05-26 | 2013-12-18 | 住化スタイロンポリカーボネート株式会社 | Lighting cover |
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