CN104672851A - Polycarbonate (PC) composite material with excellent mechanical property - Google Patents
Polycarbonate (PC) composite material with excellent mechanical property Download PDFInfo
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- CN104672851A CN104672851A CN201310630548.XA CN201310630548A CN104672851A CN 104672851 A CN104672851 A CN 104672851A CN 201310630548 A CN201310630548 A CN 201310630548A CN 104672851 A CN104672851 A CN 104672851A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
- C08J5/08—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials glass fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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Abstract
The invention discloses a polycarbonate (PC) composite material with excellent mechanical property. The PC composite material is prepared from the following components by mass percent: 50-80% of PC resin, 10-20% of glass fiber, 4-8% of carbon fiber, 2-4% of a compatilizer, 0.1-1% of TAF, 0.1-1% of an antioxidant and 0.1-1% of a lubricating agent. The polycarbonate (PC) composite material has the beneficial effects that compared with the prior art, the PC composite material has the advantages of good modification effect and easiness in control after the PC composite material is subjected to blending modification by utilizing the glass fiber and carbon fiber, the surface of which is subjected to a gas-liquid double-effect oxidization treatment; furthermore, the prepared PC composite material has the advantages of high strength, modulus, elasticity and gloss, excellent electric and heat conductivities and thermal stability and the like, and is of large potential in application in the industries of automobiles, electronics, aerospace aviation, military and buildings.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically a kind of PC matrix material of excellent in mechanical performance.
Background technology
As a kind of functional, broad-spectrum engineering plastics, also there are some defects in polycarbonate (PC), as processing characteristics is poor, and easy stress cracking, notch shock and low-temperature flexibility difference etc., thus limit its application widely.
Carbon fiber is fibrous carbon materials, and carbon content is more than 90%, and it utilizes the carbonization and obtaining under rare gas element medium and high temperature state of various organic fibre.Carbon fiber has very excellent mechanical property,, in current mass-produced high-performance fiber, there is the highest specific tenacity and the fiber of the highest specific modulus, in high temperature inert environment particularly more than 2000 DEG C, carbon material is the material that unique intensity does not decline, be other primary structural material (metal and alloy thereof) incomparable.Except the mechanical property of excellence, carbon fiber also has other multiple premium propertiess concurrently, as low density, high temperature resistant, corrosion-resistant, rub resistance, antifatigue, shock attenuation are high, electricity and heat conductivity is high, thermal expansivity is low, light peneration is high, non-magnetic body but have electromagnetic wave shielding etc.But not surface treated carbon fiber surface inertia is large, lacks and there is chemically active functional group, poor with the agglutinating value(of coal) of matrix, there is more defect in interface, limit the high performance performance of carbon fiber.Therefore, very active to the Research on Surface Modification of carbon fiber both at home and abroad.The surface modification of carbon fiber, mainly through improving carbon fiber surface activity, interface performance between reinforced carbon fiber and matrix resin, reaches the object improving matrix material interlayer shearing resistance.
Carbon fiber surface modification is strengthened PC matrix material, a kind of type material possessing the different advantage such as electrically of high strength, snappiness, high rigidity and height can be obtained, and improve the mechanical property and conductivity etc. of PC widely, there is huge development space and application prospect.
Summary of the invention
The object of the present invention is to provide a kind of PC matrix material of carbon fiber reinforced excellent in mechanical performance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of PC matrix material of excellent in mechanical performance, and its component by mass percent proportioning is: PC resin 50% ~ 80%, glass fibre 10% ~ 20%, carbon fiber 4% ~ 8%, compatilizer 2% ~ 4%, TAF 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 1%, lubricant 0.1% ~ 1%.
Described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol.
Described glass fibre be diameter 8 ~ 12 μm, length is the alkali-free short glass fiber of 3 ~ 6mm, its surface is through silane coupling agent process.
Described carbon fiber is the carbon fiber of surface through gas-liquid economic benefits and social benefits oxide treatment, its treatment process is: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, 5 ~ 10 minutes are oxidized at 400 DEG C ~ 450 DEG C, then expose and cool 30 ~ 60 minutes in atmosphere, then the carbon fiber obtained after drying.
Described compatilizer is polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH).
Described oxidation inhibitor is Hinered phenols antioxidant 1010 and the compound of phosphite ester kind antioxidant 168 in quality 1:4 ratio.
Described lubricant is pentaerythritol stearate (PETS).
The preparation method of the PC matrix material of above-mentioned a kind of excellent in mechanical performance, comprises the following steps:
(1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, stand-by;
(2), surface treatment of carbon fibers: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, at 400 DEG C ~ 450 DEG C, be oxidized 5 ~ 10 minutes, then expose and cool 30 ~ 60 minutes in atmosphere, more stand-by after drying;
(3) carbon fiber after the surface treatment that dry PC resin, glass fibre and step (2) obtain, is taken by weight ratio, add high-speed mixer, stir 3 ~ 10 minutes, then the compatilizer, TAF, oxidation inhibitor, the lubricant that take by weight ratio is added, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;
(4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 240 DEG C ~ 260 DEG C, cooling granulation, obtain the PC matrix material of a kind of excellent in mechanical performance of the present invention.
The invention has the beneficial effects as follows, compared with prior art, the present invention adopts glass fibre and the surperficial carbon fiber blending and modifying PC matrix material through gas-liquid economic benefits and social benefits oxide treatment, there is modified effect good and be easy to the advantages such as control, and obtained PC matrix material has the advantages such as high strength, high-modulus, snappiness, high gloss and good conductive, heat conduction and thermostability, has great potential in sector applications such as automobile, electronics, space flight and aviation, military affairs, buildings.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
A PC matrix material for excellent in mechanical performance, its component in mass percent proportioning is: PC resin 74%, glass fibre 15%, carbon fiber 6%, polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH) 3%, TAF 0.8%, Hinered phenols antioxidant 1010 and compound 0.5%, the pentaerythritol stearate (PETS) 0.7% of phosphite ester kind antioxidant 168 in quality 1:4 ratio.Wherein, described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol.Described glass fibre be diameter 8 ~ 12 μm, length is the alkali-free short glass fiber of 3 ~ 6mm, its surface is through silane coupling agent process.Described carbon fiber is the carbon fiber of surface through gas-liquid economic benefits and social benefits oxide treatment, its treatment process is: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, 5 ~ 10 minutes are oxidized at 400 DEG C ~ 450 DEG C, then expose and cool 30 ~ 60 minutes in atmosphere, then the carbon fiber obtained after drying.
Preparation method: (1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, stand-by; (2), surface treatment of carbon fibers: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, at 400 DEG C ~ 450 DEG C, be oxidized 5 ~ 10 minutes, then expose and cool 30 ~ 60 minutes in atmosphere, more stand-by after drying; (3) carbon fiber after the surface treatment that dry PC resin, glass fibre and step (2) obtain, is taken by weight ratio, add high-speed mixer, stir 3 ~ 10 minutes, then add take by weight ratio polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH), TAF, Hinered phenols antioxidant 1010 and compound, the pentaerythritol stearate (PETS) of phosphite ester kind antioxidant 168 in quality 1:1 ratio, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging; (4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 240 DEG C ~ 260 DEG C, cooling granulation, obtain the PC matrix material of a kind of excellent in mechanical performance of the present invention.
Embodiment 2:
A PC matrix material for excellent in mechanical performance, its component in mass percent proportioning is: PC resin 67%, glass fibre 20%, carbon fiber 8%, polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH) 3.5%, TAF 0.5%, Hinered phenols antioxidant 1010 and compound 0.5%, the pentaerythritol stearate (PETS) 0.5% of phosphite ester kind antioxidant 168 in quality 1:4 ratio.Wherein, described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol.Described glass fibre be diameter 8 ~ 12 μm, length is the alkali-free short glass fiber of 3 ~ 6mm, its surface is through silane coupling agent process.Described carbon fiber is the carbon fiber of surface through gas-liquid economic benefits and social benefits oxide treatment, its treatment process is: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, 5 ~ 10 minutes are oxidized at 400 DEG C ~ 450 DEG C, then expose and cool 30 ~ 60 minutes in atmosphere, then the carbon fiber obtained after drying.
Preparation method is with embodiment 1.
Claims (8)
1. the PC matrix material of an excellent in mechanical performance, it is characterized in that, its component by mass percent proportioning is: PC resin 50% ~ 80%, glass fibre 10% ~ 20%, carbon fiber 4% ~ 8%, compatilizer 2% ~ 4%, TAF 0.1% ~ 1%, oxidation inhibitor 0.1% ~ 1%, lubricant 0.1% ~ 1%.
2. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, described PC resin is bisphenol A-type aromatic copolycarbonate, and weight-average molecular weight is 20000 ~ 40000g/mol.
3. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, described glass fibre be diameter 8 ~ 12 μm, length is the alkali-free short glass fiber of 3 ~ 6mm, its surface is through silane coupling agent process.
4. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, it is characterized in that, described carbon fiber is the carbon fiber of surface through gas-liquid economic benefits and social benefits oxide treatment, its treatment process is: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, 5 ~ 10 minutes are oxidized at 400 DEG C ~ 450 DEG C, then expose and cool 30 ~ 60 minutes in atmosphere, the carbon fiber obtained after drying again.
5. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, described compatilizer is polymethylmethacrylate grafted maleic anhydride (PMMA-g-MAH).
6. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, described oxidation inhibitor is Hinered phenols antioxidant 1010 and the compound of phosphite ester kind antioxidant 168 in quality 1:4 ratio.
7. the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, described lubricant is pentaerythritol stearate (PETS).
8. the preparation method of the PC matrix material of a kind of excellent in mechanical performance according to claim 1, is characterized in that, comprise the following steps:
(1), by PC resin in blast drier at 110 DEG C ~ 130 DEG C temperature dry 3 ~ 4 hours, stand-by;
(2), surface treatment of carbon fibers: carbon fiber is placed in the salpeter solution that massfraction is 60% ~ 70%, dip treating 10 ~ 60 minutes at 75 DEG C ~ 90 DEG C, then vacuum filtration disacidify liquid, and with deionized water rinsing to neutral, be placed in reactor after drying, and adopt concentration to be that the ozone of 0.5 ~ 15mg/L imports carbon fiber surface continuously, at 400 DEG C ~ 450 DEG C, be oxidized 5 ~ 10 minutes, then expose and cool 30 ~ 60 minutes in atmosphere, more stand-by after drying;
(3) carbon fiber after the surface treatment that dry PC resin, glass fibre and step (2) obtain, is taken by weight ratio, add high-speed mixer, stir 3 ~ 10 minutes, then the compatilizer, TAF, oxidation inhibitor, the lubricant that take by weight ratio is added, continue mixing 5 ~ 30 minutes, make fully to mix rear discharging;
(4), the compound of step (3) is added in twin screw extruder, extrudes through melting mixing at 240 DEG C ~ 260 DEG C, cooling granulation, obtain the PC matrix material of a kind of excellent in mechanical performance of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310630548.XA CN104672851A (en) | 2013-12-02 | 2013-12-02 | Polycarbonate (PC) composite material with excellent mechanical property |
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| CN201310630548.XA CN104672851A (en) | 2013-12-02 | 2013-12-02 | Polycarbonate (PC) composite material with excellent mechanical property |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751679A (en) * | 2016-12-26 | 2017-05-31 | 吴中区穹窿山倪源交通器材经营部 | A kind of carbon fiber modifying makrolon material and preparation method thereof |
| CN108314875A (en) * | 2018-01-27 | 2018-07-24 | 福星东联（北京）科技有限公司 | A kind of carbon fibre composite and preparation method thereof for collision prevention girders |
| CN110511559A (en) * | 2019-09-06 | 2019-11-29 | 深圳市银宝山新科技股份有限公司 | Mixed fiber plastic cement and preparation method thereof is kneaded injection-moulding device |
-
2013
- 2013-12-02 CN CN201310630548.XA patent/CN104672851A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751679A (en) * | 2016-12-26 | 2017-05-31 | 吴中区穹窿山倪源交通器材经营部 | A kind of carbon fiber modifying makrolon material and preparation method thereof |
| CN108314875A (en) * | 2018-01-27 | 2018-07-24 | 福星东联（北京）科技有限公司 | A kind of carbon fibre composite and preparation method thereof for collision prevention girders |
| CN108314875B (en) * | 2018-01-27 | 2020-09-22 | 福星东联（北京）科技有限公司 | Carbon fiber composite material for anti-collision beam and preparation method thereof |
| CN110511559A (en) * | 2019-09-06 | 2019-11-29 | 深圳市银宝山新科技股份有限公司 | Mixed fiber plastic cement and preparation method thereof is kneaded injection-moulding device |
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Application publication date: 20150603 |