CN104962056B - A kind of high shading PC material and preparation method thereof - Google Patents
A kind of high shading PC material and preparation method thereof Download PDFInfo
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- CN104962056B CN104962056B CN201510334506.0A CN201510334506A CN104962056B CN 104962056 B CN104962056 B CN 104962056B CN 201510334506 A CN201510334506 A CN 201510334506A CN 104962056 B CN104962056 B CN 104962056B
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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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3676—Treatment with macro-molecular organic compounds
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Abstract
The object of this invention is to provide a kind of high shading PC material, a kind of have good physical behavior with in the time of thin-walled still can height shading material, thereby solve current shading PC material larger problem of light transmittance in the time of thin-walled. High shading PC material of the present invention, is the weight percent proportioning of its constituent as follows: PC? 65-85%, processes titanium dioxide 15-35%, organic silicone oil 1-3%, flexibilizer 2-5%, lubricant 0.2-1%, antioxidant 0.2-1%. The notched Izod impact strength > 50KJ/m of high shading PC material of the present invention2, case hardness (R scale) > 110, the light transmittance < 15 of 1.0mm, 120 DEG C of heat distortion temperature (1.8MPa) >. High shading PC of the present invention has good mechanical property, impact strength, and good light reflection and shield effectiveness, can be widely used in liquid crystal display reflector, LED lamp base etc.
Description
Technical field
The invention belongs to technical field of polymer materials, be specifically related to a kind of high shading PC material and manufactureMethod.
Background technology
Merlon (PC) has good mechanical strength, impact strength, heat resistance, lower temperature resistanceEtc. advantage, it in general engineering plastic, is unique transparent material. Machinery, automobile, electronic apparatus,The fields such as CD are widely used, and are one of with fastest developing speed, most widely used engineering plastics. Along with LEDThe development of technology and extensive use, to using material to propose more requirement, as light spreads, light is anti-Penetrating etc., because the properties such as heat resistance, toughness of PC material is outstanding, is the head of LED lamp materialChoosing. For this reason, we have carried out the research and development of high shading PC.
Summary of the invention
The object of this invention is to provide a kind of high shading PC material, one have good physical behavior withIn the time of thin-walled still can height shading material, thereby solve current shading PC material light transmittance in the time of thin-walledLarger problem.
High shading PC material of the present invention, the weight percent proportioning of its constituent is as follows: PC65-85%,Process titanium dioxide 15-35%, organic silicone oil 1-3%, flexibilizer 2-5%, lubricant 0.2-1%, antioxygenAgent 0.2-1%.
Described lubricant is preferably two stearic amides, and antioxidant is preferably pentaerythritol ester
In order to obtain effect just, titanium dioxide to be processed, concrete steps are as follows: by titanium whitePowder is that titanium dioxide high-speed stirred 30min at 120 DEG C is removed to the moisture content of absorption, then joins to be mixed with and drawSend out in the styrene and silicon oil solution of agent, after continuation mixes 15min, blowing is cooling for subsequent use; Wherein titanium whiteThe weight ratio of powder, styrene, silicone oil, initator is 100:1:2:0.1;
Described initator is dicumyl peroxide (DCP).
The preparation method of PC material of the present invention, comprises following step:
1) initator is joined in styrene silicone oil mixed solution for subsequent use;
2) by titanium dioxide in high-speed mixer at 120 DEG C high-speed stirred 30min, to remove absorptionMoisture content, add the mixed solution of step 1 gained, continue to mix 15min after blowing cooling for subsequent use;
3) take respectively PC, flexibilizer, antioxidant etc. for subsequent use;
4) PC, flexibilizer, antioxidant etc. are added and in high-speed mixer, mix 3-5min, then addThe titanium dioxide of handling well, mixes 5-10min;
5) by step 4) gained mixture joins parallel dual-screw extruding machine extruding pelletization, and rotating speed is300～400r/min, 240～265 DEG C of temperature, pelletizing packaging after tank is cooling.
Detailed description of the invention
Itself there is notch-sensitive shortcoming in PC material, adds after the inorganic matter titanium dioxide of more amount meetingForm more stress concentration point, notch sensitivity increases, and makes the performance degradation of material; Titanium dioxide existsIn resin, disperse badly, can form the bad orders such as more pit. High shading PC material of the present inventionThe polarity that can change titanium dioxide after middle will titanium dioxide processing, compatibility and dispersiveness in PC material are carriedHeight, in the time of identical titanium dioxide concentration, outward appearance, shading rate and performance are better than when untreated.
Concrete technical scheme is as follows:
1, choose the titanium dioxide of appropriate particle size and covering power, guarantee high shading PC material shading rate andWhiteness;
2, carry out cinnamic polymerisation on the surface of titanium dioxide, improved titanium dioxide at PC resinInterior dispersiveness and compatibility;
3, by controlling temperature, rotating speed and the styrene monomer of high-speed mixer and the use of initatorAmount, controls the cinnamic degree of polymerization, increases the compatibility with PC resin;
4, consider performance, shading rate and the processability of high shading PC material, determine and process titanium whiteThe adding proportion of powder and flexibilizer.
Raw material used in the present invention can make commercially available arbitrary money product, and for example PC raw material is strange U.S. publicThe universal PC resin of department, the trade mark is PC-110; Kinematic viscosity 0.001～the 0.06m of organic silicone oil2/S；Titanium dioxide is the rutile type titanium white that Panzhihua titanium industry is produced, and the trade mark is R-996, and styrene is commercially available(removing polymerization inhibitor), initator is dicumyl peroxide (DCP).
Below in conjunction with embodiment, the high shading PC of the present invention material and preparation method thereof is described in detail.
Embodiment 1: do not add processing titanium dioxide prepared by the present invention.
The preparation method of the alloy material of the present embodiment is specific as follows:
1) take respectively PC880g, titanium dioxide 100g, antioxidant 4g, lubricant 10g, organosilicon10g is for subsequent use for oil;
2) PC, organic silicone oil are added to homogenizer mixing 5min, then add successively antioxidant andMix lubricant is even, finally adds titanium dioxide mixing 5min;
3) by step 2) gained mixture joins parallel dual-screw extruding machine extruding pelletization, and rotating speed is300～400r/min, 240～265 DEG C of temperature, after tank is cooling, high shading PC material is made in pelletizing.
The high shading PC material of making is carried out to hot strength, bending strength, impact strength, printing opacityThe detection of the indexs such as rate.
According to the preparation method of embodiment 1, carry out the high shading of embodiment 2-5 according to the proportioning of following table 1The preparation of PC material and the analysis of index.
Table 1: the component weight proportion table of embodiment 1-5
| Material mixture ratio (WT) % | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| PC | 88 | 83 | 78 | 73 | 68 |
| Titanium dioxide | 10 | 15 | 20 | 25 | 30 |
| Organic silicone oil | 1 | 1 | 1 | 1 | 1 |
| Lubricant | 1 | 1 | 1 | 1 | 1 |
| Antioxidant | 0.4 | 0.2 | 0.2 | 0.2 | 0.2 |
In above-mentioned formula, all raw material kind is in the same manner as in Example 1; The kinematic viscosity of silicone oilBe 0.001～0.06m2/ S, Dow Corning Corporation produces, and lubricant is two stearic amides, by JapanKAO. Corp. SA produces, and hindered phenol antioxygen is pentaerythritol ester, the trade mark 1010, and BASF AG produces
The performance of high shading PC material is as following table:
| Material property | Testing standard | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Hot strength | ISO 527 | MPa | 66.0 | 65.0 | 63.0 | 57.0 | 55.0 |
| Elongation at break | ISO 527 | ％ | 105 | 98 | 70 | 50 | 36 |
| Bending strength | ISO 178 | MPa | 90.0 | 91.0 | 87.0 | 82.0 | 77.0 |
| Notched Izod impact strength | ISO 179-2 | KJ/m2 | 40.0 | 32.0 | 26.0 | 21.5 | 17.5 |
| 1.0mm light transmittance | GB/T2410 | ％ | 36 | 32 | 31 | 30 | 28 |
| Rockwell hardness | ISO 2039-2 | R-scale | 117 | 118 | 118 | 116 | 115 |
The light transmittance of PC resin is 90%, adds the light transmittance that can significantly reduce PC resin after titanium dioxide,But add merely titanium dioxide and can not reach the requirement that light transmittance is less than 15%. From the test knot of upper tableReally see, after the titanium dioxide of interpolation exceedes 20%, the performance of PC material declines rapidly, and light transmittance has noObviously reduce, and titanium dioxide content exceedes 35% rear materials processing hydraulic performance decline, therefore high shading PC materialThe titanium dioxide content of material is controlled at 20-25% the best.
Can find out the electronic microscope photos of embodiment 1-5, the dispersion of titanium dioxide in PC resin is very unevenEven, there is serious agglomeration, particle diameter is also larger, can judge the titanium dioxide of high-load and set at PCDispersed very poor in fat. According to the theory of Pigments, the particle diameter of pigment in plastics is less, dispersesProperty is better, and pigmenting power and covering power are stronger.
In order to improve the dispersiveness of titanium dioxide in the high shading PC of the present invention material, titanium dioxide is carried out to surfaceProcess.
The preparation method who wherein processes titanium dioxide is as follows: 1) take respectively titanium dioxide, styrene, silicone oil,Initator, styrene need be removed polymerization inhibitor, initator is joined to styrene silicone oil mixed solution for subsequent use;
2) by titanium dioxide in high-speed mixer at 120 DEG C high-speed stirred 30min, to remove absorptionMoisture content, add the mixed solution of step 1 gained, continue to mix 15min after blowing cooling for subsequent use
Carry out the preparation of the alloy material of embodiment 6 to embodiment 10 according to following table:
| Material mixture ratio (WT) % | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| PC | 83 | 78 | 75 | 70 | 60 |
| Process titanium dioxide | 15 | 20 | 20 | 25 | 35 |
| Silicone oil | 1 | 1 | 1 | 1 | 1 |
| Flexibilizer | / | / | 3 | 3 | 3 |
| Lubricant | 1 | 1 | 1 | 1 | 1 |
| Antioxidant | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
In above-mentioned formula, what flexibilizer adopted is the MBS flexibilizer that the beautiful sun of Mitsubishi is produced, and the trade mark is S-2001.The test result of embodiment 6-10 is as follows:
| Material property | Testing standard | Unit | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| Hot strength | ISO 527 | MPa | 65.0 | 63.0 | 60.0 | 58.5 | 52.0 |
| Elongation at break | ISO 527 | ％ | 105 | 95 | 110 | 110 | 105 |
| Bending strength | ISO 178 | MPa | 93.0 | 92.0 | 88.0 | 85.0 | 80.0 |
| Notched Izod impact strength | ISO 179-2 | KJ/m2 | 37.0 | 34.0 | 55.0 | 57.0 | 48.0 |
| 1.0mm light transmittance | GB/T 2410 | ％ | 25 | 18 | 15 | 13 | 12 |
| Rockwell hardness | ISO 2039-2 | R-scale | 118 | 117 | 115 | 115 | 113 |
Comparative example 6,7 and embodiment 2,3 can find out, when identical adding proportion, processesThe shaded effect of titanium dioxide will be better than far away when untreated. Analysis by Electronic Speculum can be found out, implementsThe titanium dioxide of example 6-8 disperses effective, does not have obvious agglomeration, and in embodiment 10, titaniumWhite powder has again agglomeration to occur. Therefore, the content of titanium dioxide being controlled to 20-25% is relatively applicable to. Add after a small amount of MBS flexibilizer, can significantly improve the impact strength of high shading PC material,And other performances of material are not affected substantially.
Comprehensive above-mentioned data, the notched Izod impact strength > 50KJ/m of high shading PC material of the present invention2，Case hardness (R scale) > 110, the light transmittance < 15 of 1.0mm, heat distortion temperature (1.8MPa)120 DEG C of >. High shading PC of the present invention has good mechanical property, impact strength, good lightReflection and shield effectiveness, can be widely used in liquid crystal display reflector, LED lamp base etc. The present inventionTechnique simple, good to the treatment effect of titanium dioxide, similarly technique also can be widely used in shading PC,The production of shading PC/ABS, shading PMMA etc., simultaneously also production and processing, favorable dispersibility,The PC high concentration white master batch that whiteness is high.
Claims (4)
1. a high shading PC material, the weight percent proportioning of its constituent is as follows: PC65-85%, locatesReason titanium dioxide 15-35%, organic silicone oil 1-3%, flexibilizer 2-5%, lubricant 0.2-1%, antioxidant 0.2-1%;
Described processing titanium dioxide, its preparation method is as follows: by titanium dioxide high-speed stirred 30min at 120 DEG CRemove the moisture content of absorption, then join in the styrene and silicon oil solution that is mixed with initator, continue to mix 15minThe rear cooling preparation that completes;
Wherein the weight ratio of titanium dioxide, styrene, silicone oil, initator is 100:1:2:0.1;
Described initator is dicumyl peroxide.
2. PC material as claimed in claim 1, is characterized in that, described lubricant is two stearic acidAcid amides.
3. PC material as claimed in claim 1, is characterized in that, described antioxidant is Ji WusiAlcohol ester.
4. the preparation method of PC material claimed in claim 1, comprises following step:
1) initator is joined in styrene silicone oil mixed solution for subsequent use;
2) by titanium dioxide in high-speed mixer at 120 DEG C high-speed stirred 30min, to remove the water of absorptionPart, add step 1) mixed solution of gained, continue to mix 15min after blowing cooling for subsequent use;
3) take respectively PC, flexibilizer, antioxidant etc. for subsequent use;
4) PC, flexibilizer, antioxidant etc. are added and in high-speed mixer, mix 3-5min, then add processingGood titanium dioxide, mixes 5-10min;
5) by step 4) gained mixture joins parallel dual-screw extruding machine extruding pelletization, and rotating speed is 300～400r/min, 240～265 DEG C of temperature, pelletizing packaging after tank is cooling.
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| CN105059859B (en) * | 2015-09-07 | 2017-04-05 | 四川成焊宝玛焊接装备工程有限公司 | A kind of coaster circulation conveying equipment and its carrying method |
| CN105602184A (en) * | 2015-12-30 | 2016-05-25 | 上海金发科技发展有限公司 | Low-diffusion, ultrahigh-shading and high-reflective styryl composition and preparation method thereof |
| CN105823028A (en) * | 2016-05-26 | 2016-08-03 | 中山市百事顺业塑料电器有限公司 | Light guide decorative lamp strip |
| CN107254123A (en) * | 2017-07-31 | 2017-10-17 | 广东祺龙科技有限公司 | A kind of semi-transparent LED is material modified and preparation method thereof with PVC |
| CN109337330B (en) * | 2018-09-10 | 2020-06-05 | 广东聚石化学股份有限公司 | Halogen-free flame-retardant high-shading PC composite material and preparation method thereof |
| CN109867941A (en) * | 2019-01-18 | 2019-06-11 | 林建民 | A kind of preparation of high reflective PC material |
| CN110734637B (en) * | 2019-10-18 | 2021-12-07 | 公牛集团股份有限公司 | Shading PC material and preparation method thereof |
| CN111704791A (en) * | 2020-06-03 | 2020-09-25 | 大韩化工工业高性能材料(东莞)有限公司 | Light-guiding light-diffusing PC material and preparation method thereof |
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| CN103435995B (en) * | 2013-08-07 | 2016-09-14 | 东莞市川源高分子科技有限公司 | A kind of high resistance light high reflected P C |
| CN103937186A (en) * | 2014-03-07 | 2014-07-23 | 广东聚石化学股份有限公司 | High light shading rate PC composite material and preparation method thereof |
| CN104371208B (en) * | 2014-12-05 | 2017-04-19 | 成都领航科技股份有限公司 | Master batch of high-transmittance and high-masking diffusion plate, method for manufacturing master batch and method for manufacturing diffusion plate |
| CN104497533A (en) * | 2014-12-17 | 2015-04-08 | 安徽科聚新材料有限公司 | Halogen-free flame-retardant high-gloss reflective heat-conducting polycarbonate material and preparation method thereof |
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Denomination of invention: High-shading PC (polycarbonate) material and preparing method thereof Effective date of registration: 20191118 Granted publication date: 20160504 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: QINGDAO ZHONGXIN HUAMEI PLASTIC CO., LTD. Registration number: Y2019990000543 |
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