CN104004335A - High-safety polycarbonate composition and preparation method thereof - Google Patents
High-safety polycarbonate composition and preparation method thereof Download PDFInfo
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- CN104004335A CN104004335A CN201410186856.2A CN201410186856A CN104004335A CN 104004335 A CN104004335 A CN 104004335A CN 201410186856 A CN201410186856 A CN 201410186856A CN 104004335 A CN104004335 A CN 104004335A
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- polycarbonate
- resin
- high security
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Classifications
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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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to high-safety polycarbonate composition and a preparation method thereof. The high-safety polycarbonate composition comprises the following compositions in parts by weight: 40-60 parts of polycarbonate, 10-30 parts of silicon-containing polycarbonate resin, 15-25 parts of acrylonitrile-styrene copolymer, 5-10 parts of a flexibilizer, 0.1-1 part of an anti-oxidant and 0.1-1 part of a lubricant. According to the polycarbonate composition, under the effect of extension flow, PC resin, Si-PC resin and SAN resin are relatively well dispersed, and the flexibilizer is relatively well distributed in the PC substrate, so that the material absorbs more energy when being subjected to high-speed impact, and obtains high toughness; and by mixing with Si-PC resin, the material keeps extremely good toughness after being subjected to long-term heat storage.
Description
Technical field
The invention belongs to technical field of polymer materials, be specifically related to polycarbonate compositions of a kind of high security and preparation method thereof.
Background technology
Polycarbonate resin, due to its excellent impact property, resistance toheat performance, is widely used in automotive field.But polycarbonate exists melt viscosity large, and processing fluidity is low, to shortcomings such as breach sensitivities.By the mixture of Polybutadiene-acrylonitrile-styrene copolymerized resin and polycarbonate blending, can obtain high mobility, the advantage of high tenacity, is widely used in automobile instrument panel, multiple positions such as car light.Along with the raising of automobile to security, improve requirement for the toughness under the high speed of plastics and long-term toughness.
Siliceous polycarbonate is the segmented copolymer of polydimethylsiloxane and bisphenol-a polycarbonate, builds by introduce silica in molecular chain, has obtained excellent high and low temperature resistance, flame retardant resistance, stability to hydrolysis, low-temperature flexibility and good long term heat ageing performance.
Macromolecule melt, under the effect of shear flow, breaks after large drop is stretched, and becomes two small dropletss, disperses in this way phase.Under the effect of extensional flow, large drop is drawn into thin fibrous, and then moment is broken into a large amount of small dropletss.Particularly, in the large system of ratio of viscosities, in the time that viscosity ratio is greater than certain value, shear flow can not make droplet rupture, but extensional flow can continue drop refinement, thereby makes phase refinement, obtains excellent dispersion.The alternating action generation stretching stream that is compressed and stretches of melt alternative expression, the material degraded that it has avoided local strong shearing to cause.
Summary of the invention
Object of the present invention is exactly the polycarbonate compositions that a kind of high security is provided in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions: a kind of polycarbonate compositions of high security, comprises the component of following weight part:
Described polycarbonate is phosgenation aromatic copolycarbonate, and the weight-average molecular weight of described polycarbonate is 25000-40000.
The silicone content of described siliceous polycarbonate is at 4-6%, and the weight-average molecular weight of described siliceous polycarbonate is 25000-30000.
The molecular weight of described acrylonitritrile-styrene resin is 130000～150000, and described acrylonitritrile-styrene resin comprises 24～26% vinyl cyanide and 74～76% vinylbenzene.
Described toughner is the one in methyl methacrylate silastic copolymer, methyl methacrylate/butadiene/styrene copolymers, methyl methacrylate/acrylic acid base polymer, acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, ethylene-propylene acid butyl ester, ethylene-acrylate-glycidyl methacrylate terpolymer and ethylene-vinyl acetate copolymer-functionalization maleic anhydride.
Described oxidation inhibitor comprises one or more in commercially available oxidation inhibitor 245, antioxidant 1076, irgasfos 168.
Described lubricant comprises one or more in silicone powder, pentaerythritol ester, ethylene bis stearic amide.
The polycarbonate compositions of above-mentioned a kind of high security makes by following steps:
S1, take respectively each component according to a kind of spraying described in claim 1～7 with heat-resisting ABS resin formula;
S2, the PC resin taking in S1 step, Si-PC resin SAN resin, toughner, oxidation inhibitor and lubricant are added in mixing and blending machine and mixed;
S3, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
In described screw combinations, introduce stretching fluid element, wherein, described stretching fluid element thread pitch in extrusion rotation produces big or small alternative expression to be changed, and material is compressed and stretches the effect alternately changing.
Principle of the present invention is: siliceous polycarbonate is the segmented copolymer of polydimethylsiloxane and bisphenol-a polycarbonate, build by introduce silica in molecular chain, obtained excellent high and low temperature resistance, flame retardant resistance, stability to hydrolysis, low-temperature flexibility and good long term heat ageing performance.
Macromolecule melt, under the effect of shear flow, breaks after large drop is stretched, and becomes two small dropletss, disperses in this way phase.Under the effect of extensional flow, large drop is drawn into thin fibrous, and then moment is broken into a large amount of small dropletss.Particularly, in the large system of ratio of viscosities, in the time that viscosity ratio is greater than certain value, shear flow can not make droplet rupture, but extensional flow can continue drop refinement, thereby makes phase refinement, obtains excellent dispersion.The alternating action generation stretching stream that is compressed and stretches of melt alternative expression, the material degraded that it has avoided local strong shearing to cause.Flow by stretching, PC resin, Si-PC resin, SAN resin are obtained better and disperse, toughner obtains better and distributes in PC substrate, makes material in the time of high speed impact, absorb more energy, obtains high tenacity; By mixing Si-PC resin, make material can well keep toughness after long term thermal is deposited simultaneously.
Compared with prior art, the beneficial effect that the present invention has is: polycarbonate compositions of the present invention flows by stretching, PC resin, Si-PC resin, SAN resin are obtained better to be disperseed, toughner obtains better and distributes in PC substrate, make material in the time of high speed impact, absorb more energy, obtain high tenacity; By mixing Si-PC resin, make material can well keep toughness after long term thermal is deposited simultaneously.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
In following examples and comparative example, selecting molecular weight is 25000～40000 bisphenol A polycarbonate, specifically uses the L-1250Y of Di Ren Asahi Chemical Industry, and according to ASTM D1234 standard, testing melting index at 300 DEG C is 10g/10min; The PC7022PJ of Mitsubishi Chemical, molten finger for 20g/10min; Si-PC adopts out photochemical AG1760 and RC1760; SAN adopts SAN320 and the SAN326 of Korea S Jin Hu; ; Toughner adopts the toughened with silicon rubber agent S2200 of the beautiful sun of Mitsubishi; Oxidation inhibitor is antioxidant 1010, the irgasfos 168 that CIBA company produces.
Comparative example 1
S01, take (component by weight, lower with)
S02, the starting material that S01 step is taken feed from side spout, at 200～280 DEG C, melt extrude, and screw extrusion press rotating speed is 500rpm, and pressure is 2MPa, and through melt extruding, granulation obtains product.
Comparative example 2
S021, take
S022, the starting material that S021 step is taken feed from side spout, at 200～280 DEG C, melt extrude, and screw extrusion press rotating speed is 500rpm, and pressure is 2MPa, and through melt extruding, granulation obtains product.
Embodiment 1
S1, take:
S2, the starting material that take in S1 step are added in mixing and blending machine and mixed;
S3, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
Wherein, introduce stretching fluid element in described screw combinations, described stretching fluid element thread pitch in extrusion rotation produces big or small alternative expression to be changed, and material is compressed and stretches the effect alternately changing.
Embodiment 2
S21, take:
S22, the starting material that take in S1 step are added in mixing and blending machine and mixed;
S23, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
Wherein, introduce stretching fluid element in described screw combinations, described stretching fluid element thread pitch in extrusion rotation produces big or small alternative expression to be changed, and material is compressed and stretches the effect alternately changing.
Embodiment 3
S31, take
S32, the starting material that take in S1 step are added in mixing and blending machine and mixed;
S33, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
Wherein, introduce stretching fluid element in described screw combinations, described stretching fluid element thread pitch in extrusion rotation produces big or small alternative expression to be changed, and material is compressed and stretches the effect alternately changing.
Embodiment 4
S41, take
S42, the starting material that take in S1 step are added in mixing and blending machine and mixed;
S43, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
Wherein, introduce stretching fluid element in described screw combinations, described stretching fluid element thread pitch in extrusion rotation produces big or small alternative expression to be changed, and material is compressed and stretches the effect alternately changing.
Formula and the test result of each comparative example and embodiment are as shown in table 1.Notched Izod impact strength is tested according to ASTM D256 standard, and breach type is category-A, and batten thickness is 1/8 ", probe temperature is-30 DEG C; Multiaxis impacts to be tested according to ISO-6603 standard, and test speed adopts 4.4m/s.Probe temperature is respectively 23 DEG C and-30 DEG C.Long-term behaviour employing height is warm deposits 90 DEG C, and 500h, deposits rear test notched Izod impact strength.
As shown in Table 1, flow by stretching, PC resin, Si-PC resin, SAN resin are obtained better and disperse, toughner obtains better and distributes in PC substrate, makes material in the time of high speed impact, absorb more energy, obtains high tenacity; By mixing Si-PC resin, make material can well keep toughness after long term thermal is deposited simultaneously.Embodiment 3 shows excellent ball falling impact performance, particularly low temperature ball falling impact performance, without fracture.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a polycarbonate compositions for high security, is characterized in that, comprises the component of following weight part:
2. the polycarbonate compositions of high security according to claim 1, is characterized in that, described polycarbonate is phosgenation aromatic copolycarbonate, and the weight-average molecular weight of described polycarbonate is 25000-40000.
3. the polycarbonate compositions of high security according to claim 1, is characterized in that, the silicone content of described siliceous polycarbonate is at 4-6%, and the weight-average molecular weight of described siliceous polycarbonate is 25000-30000.
4. the polycarbonate compositions of high security according to claim 1, it is characterized in that, the molecular weight of described acrylonitritrile-styrene resin is 130000～150000, and described acrylonitritrile-styrene resin comprises 24～26% vinyl cyanide and 74～76% vinylbenzene.
5. the polycarbonate compositions of high security according to claim 1, it is characterized in that, described toughner is the one in methyl methacrylate silastic copolymer, methyl methacrylate/butadiene/styrene copolymers, methyl methacrylate/acrylic acid base polymer, acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, ethylene-propylene acid butyl ester, ethylene-acrylate-glycidyl methacrylate terpolymer and ethylene-vinyl acetate copolymer-functionalization maleic anhydride.
6. the polycarbonate compositions of high security according to claim 1, is characterized in that, described oxidation inhibitor comprises one or more in commercially available oxidation inhibitor 245, antioxidant 1076, irgasfos 168.
7. the polycarbonate compositions of high security according to claim 1, is characterized in that, described lubricant comprises one or more in silicone powder, pentaerythritol ester, ethylene bis stearic amide.
8. a preparation method for the polycarbonate compositions of high security, is characterized in that, comprises the following steps:
S1, take respectively each component according to a kind of spraying described in claim 1～7 with heat-resisting ABS resin formula;
S2, the PC resin taking in S1 step, Si-PC resin SAN resin, toughner, oxidation inhibitor and lubricant are added in mixing and blending machine and mixed;
S3, by gained mixture in S2 step by twin screw extruder blend granulation, screw extrusion press rotating speed is 600～900rpm, pressure is 2～3MPa, through melt extruding, granulation obtains product.
9. the preparation method of the polycarbonate compositions of high security according to claim 8, is characterized in that, introduces stretching fluid element in described screw combinations.
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| CN201410186856.2A CN104004335A (en) | 2014-05-05 | 2014-05-05 | High-safety polycarbonate composition and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559107A (en) * | 2014-12-15 | 2015-04-29 | 深圳市富恒新材料股份有限公司 | Glass fiber reinforced polycarbonate composite material and preparation method thereof |
| CN104861627A (en) * | 2015-04-29 | 2015-08-26 | 南宁燎旺车灯有限责任公司 | Automobile lamp detection tool |
| CN105484625A (en) * | 2015-11-19 | 2016-04-13 | 西安科技大学 | Building energy-saving type door and window construction |
| CN105860545A (en) * | 2016-06-13 | 2016-08-17 | 上海锦湖日丽塑料有限公司 | Silicon-containing polycarbonate and preparation method thereof |
| WO2018107969A1 (en) * | 2016-12-15 | 2018-06-21 | 金发科技股份有限公司 | Pc/abs composition, preparation method therefor and use thereof |
| CN109721998A (en) * | 2018-12-29 | 2019-05-07 | 上海锦湖日丽塑料有限公司 | A kind of infrared high rigidity polycarbonate compositions and preparation method thereof |
| CN110982241A (en) * | 2019-12-30 | 2020-04-10 | 秦皇岛天秦装备制造股份有限公司 | Polycarbonate modified plastic for extreme environmental temperature and preparation method and application thereof |
| CN111171544A (en) * | 2020-01-19 | 2020-05-19 | 上海金山锦湖日丽塑料有限公司 | PC/ASA alloy material with excellent low-temperature multi-axial impact performance and preparation method thereof |
| CN114085512A (en) * | 2021-11-11 | 2022-02-25 | 上海金山锦湖日丽塑料有限公司 | Light diffusion flame-retardant PC with excellent humidity-heat aging resistance and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559107A (en) * | 2014-12-15 | 2015-04-29 | 深圳市富恒新材料股份有限公司 | Glass fiber reinforced polycarbonate composite material and preparation method thereof |
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| WO2018107969A1 (en) * | 2016-12-15 | 2018-06-21 | 金发科技股份有限公司 | Pc/abs composition, preparation method therefor and use thereof |
| CN109721998A (en) * | 2018-12-29 | 2019-05-07 | 上海锦湖日丽塑料有限公司 | A kind of infrared high rigidity polycarbonate compositions and preparation method thereof |
| CN110982241A (en) * | 2019-12-30 | 2020-04-10 | 秦皇岛天秦装备制造股份有限公司 | Polycarbonate modified plastic for extreme environmental temperature and preparation method and application thereof |
| CN111171544A (en) * | 2020-01-19 | 2020-05-19 | 上海金山锦湖日丽塑料有限公司 | PC/ASA alloy material with excellent low-temperature multi-axial impact performance and preparation method thereof |
| CN114085512A (en) * | 2021-11-11 | 2022-02-25 | 上海金山锦湖日丽塑料有限公司 | Light diffusion flame-retardant PC with excellent humidity-heat aging resistance and preparation method thereof |
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Application publication date: 20140827 |