WO2005059033A1 - 導電性熱可塑性樹脂組成物及びそれを用いた成形品 - Google Patents
導電性熱可塑性樹脂組成物及びそれを用いた成形品 Download PDFInfo
- Publication number
- WO2005059033A1 WO2005059033A1 PCT/JP2004/018473 JP2004018473W WO2005059033A1 WO 2005059033 A1 WO2005059033 A1 WO 2005059033A1 JP 2004018473 W JP2004018473 W JP 2004018473W WO 2005059033 A1 WO2005059033 A1 WO 2005059033A1
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- WO
- WIPO (PCT)
- Prior art keywords
- thermoplastic resin
- conductive thermoplastic
- resin composition
- mass
- graft copolymer
- Prior art date
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Classifications
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
Definitions
- the present invention has high heat resistance, flame retardancy, high strength, and high rigidity, and is excellent in dimensional stability, and can be suitably used for various electric and electronic component members.
- the present invention relates to a thermoplastic resin composition and a molded article using the conductive thermoplastic resin composition.
- thermoplastic resin suitable for various electric and electronic component members for example, polypropylene resin, polystyrene resin, polyamide resin, polyester resin and the like are known. Further, glass fibers are added for the purpose of improving the mechanical strength of these thermoplastic resins.
- a conductive thermoplastic resin composition in which carbon black is dispersed for the purpose of imparting conductivity to the thermoplastic resin is known! / Puru.
- a member for electric and electronic parts having conductivity and antistatic property is formed.
- the member for electric and electronic parts include electronic devices such as IC (Integrated Circuit), LSI (Large Scale Integ rated circuit), and LED (Light Emitting Diode) by static electricity. Magazines and trays that prevent damage to parts are included.
- the polypropylene resin and the styrenic resin are inferior in heat resistance, and the polyamide resin and the polyester resin have reduced dimensional stability due to moisture absorption and increased dimensional stability due to large molding shrinkage.
- inferiority There is a problem of inferiority.
- a large amount of carbon black needs to be added to a conductive thermoplastic resin composition in which carbon black is dispersed in order to obtain predetermined conductivity.
- the carbon black is flammable, the conductive heat
- the flame retardancy of the plastic resin composition is remarkably reduced, and it is difficult to secure desired flame retardancy.
- a resin component comprising a hydrogenated block copolymer of 5 to 40% by mass, which is a hydrogenated block copolymer having a mass average molecular weight of 100,000 or more as a hydrogenated block copolymer of 60% by mass, )
- a conductive thermoplastic resin composition containing one or more conductive materials has been proposed (see Patent Document 1).
- the conductive thermoplastic resin has high heat resistance, flame retardancy, high strength, and high rigidity, and is excellent in dimensional stability, and can be suitably used for members for various electric and electronic components.
- the resin composition has not yet been provided.
- Patent Document 1 JP-A-11 256025
- the present invention solves the conventional problems, responds to the above demands, has excellent heat conductivity, high heat resistance, high strength, high rigidity, and high dimensional stability, and A conductive thermoplastic resin composition which has excellent flame retardancy and can be suitably used as a member for electric and electronic parts and a member for OA parts, and a molded article using the conductive thermoplastic resin composition The purpose is to provide.
- the conductive thermoplastic resin composition containing a polyphenylene ether resin, a butadiene-styrene graft copolymer, and carbon fibers has high heat resistance and high heat resistance in addition to having conductivity. It is a finding that it has strength, high rigidity, high dimensional stability, and is excellent in flame retardancy, and can be suitably used as a member for electric and electronic parts and a member for OA parts.
- the present invention is based on the above findings of the present inventors, and means for solving the above problems are as follows. That is,
- a conductive thermoplastic resin composition comprising a polyphenylene ether resin, a butadiene-styrene graft copolymer, and carbon fibers.
- thermoplastic resin according to any one of ⁇ 1> to ⁇ 2>, wherein the content of the polyphenylene ether resin in the conductive thermoplastic resin composition is 60 to 90% by mass. A composition.
- Butadiene styrene graft copolymer has a melt flow rate (MFR) of 200.
- MFR melt flow rate
- ⁇ 5> The conductive thermoplastic resin according to any one of ⁇ 1> to ⁇ 4> above, wherein the content of the butadiene-styrene graft copolymer in the conductive thermoplastic resin composition is 5 to 40% by mass. It is a fat composition.
- ⁇ 6> The conductive thermoplastic resin composition according to any one of ⁇ 1> to ⁇ 5>, wherein the styrene content in the butadiene styrene graft copolymer is 90% by mass or more.
- ⁇ 7> The conductive thermoplastic resin according to any one of ⁇ 1> to ⁇ 6>, wherein the fiber length of the carbon fibers in the conductive thermoplastic resin composition after kneading is 100 to 500 m. A composition.
- the content of carbon fiber is polyphenylene ether resin and butadiene polystyrene.
- thermoplastic resin composition according to ⁇ 1>, wherein the conductive thermoplastic resin composition contains glass fibers.
- molded product according to ⁇ 13> wherein the molded product is any of a gear, a cartridge, a paper feed guide, a magazine, and a tray.
- the conductive thermoplastic resin composition of the present invention contains a polyphenylene ether resin, a butadiene-styrene graft copolymer, and carbon fiber, and is appropriately selected from glass fiber and further, if necessary. It contains other components.
- the polyphenylene ether resin is not particularly limited and can be appropriately selected from known ones, and may be a commercially available product or an appropriately synthesized one. In the latter case, the method of synthesis can be appropriately selected depending on the purpose without particular limitation.
- polyphenylene ether resin examples include polyphenylene oxide (PPE), which is an amorphous resin obtained by polymerization of 2-6 xylenol, and 2,6-dimethylphenol.
- PPE polyphenylene oxide
- Homopolymers such as phenylene ether
- copolymers such as 2,6-dimethylphenol and 2,3,6-trimethylphenol, or those polymers containing unsaturated carbonic acid such as maleic anhydride. Polymers modified with an acid or the like.
- polyphenylene ether resin examples include, for example, YPX-100F, YPX-100D, PX-100F (all manufactured by Mitsubishi Gas Chemical Co., Ltd.), PPO640 (GE Plastics) and the like. .
- the intrinsic viscosity (IV) of the polyphenylene ether resin is preferably 0.3-0.5 dLZlOOg force, more preferably 0.3-0.45 dL / 100 g force S, and 0.35-0. 45dL / 100g power S More preferred.
- the viscosity of the polyphenylene ether resin may be too high and the molding performance may be inferior. ⁇ The desired rigidity may not be obtained because the molecular weight of the resin is too low.
- the content of the polyphenylene ether resin in the conductive thermoplastic resin composition is preferably from 60 to 90% by mass, more preferably from 65 to 80% by mass.
- the content is less than 60% by mass, desired heat resistance and high-temperature dimensional stability may not be obtained. If the content exceeds 90% by mass, molding force and impact resistance may be inferior. is there.
- the butadiene-styrene graft copolymer is a copolymer obtained by graft-polymerizing styrene as a stem and butane as a branch.
- the styrene content in the butadiene styrene graft copolymer is preferably 90% by mass or more, more preferably 90-95% by mass. If the styrene content is less than 90% by mass, the compatibility with the polyphenylene ether resin may be reduced.
- the butadiene-styrene graft copolymer is not particularly limited, and may be appropriately selected from known ones, and may be a commercially available product or a suitably synthesized product. .
- Examples of the commercially available products include polystyrene H8601 (manufactured by A & M Styrene Co., Ltd.) and the like.
- the melt flow rate (MFR) of the butadiene styrene graft copolymer is preferably 1 to 30 gZlOmin under the measurement conditions of 200 ° C and 49.03 N, more preferably 3 to 25 gZlOmin, and more preferably 10 to 25 g / 10 min. Is more preferred.
- melt flow rate is less than lgZlOmin, the viscosity may be too high and the moldability may decrease, and if it exceeds 30 gZlOmin, the effect of improving the impact strength may decrease.
- melt flow rate MFR
- an oil such as a mineral oil can be blended as an internal lubricant.
- the content of the butadiene-styrene graft copolymer in the conductive thermoplastic resin composition is preferably from 10 to 40% by mass, more preferably from 15 to 30% by mass.
- the content is less than 10% by mass, moldability and impact resistance may be poor. If it exceeds 40% by mass, high-temperature dimensional stability may not be obtained.
- the carbon fiber is not particularly limited, and may be appropriately selected from known ones according to the purpose. Examples thereof include chopped strands obtained by cutting raw yarns of pitch-based carbon fibers or PAN-based carbon fibers. Can be
- the carbon fiber has a fiber length of 3 to 6 mm in which the carbon fiber density is converged to 10 k to 20 k with a sizing agent for improving the handling property.
- the fiber diameter of the carbon fiber is preferably from 5 to 15 m, more preferably from 5 to 12 m, and still more preferably from 6 to 10 / z m.
- the fiber length in the conductive thermoplastic resin composition after kneading the carbon fibers is preferably 100 to 500 m, and more preferably around 300 m in terms of reinforcing effect and conductive performance.
- the volume resistivity of the carbon fibers 9. 9 X 10- 1 ⁇ ' cm or less preferably tool 9. 9 X 10- 2 ⁇ • cm or less is more preferable. If the volume resistivity of the carbon fiber exceeds 9.9 ⁇ 10 ⁇ ′ cm, desired conductivity may not be obtained.
- the fiber length of the carbon fibers after kneading in the conductive thermoplastic resin composition is preferably 100 to 500 m, and more preferably about 300 m in view of the reinforcing effect and the conductive performance.
- the content of the carbon fiber is preferably 5 to 30 parts by mass, and more preferably 5 to 20 parts by mass with respect to 100 parts by mass of the resin component containing the polyphenylene ether resin and the butadiene-styrene graft copolymer. Parts are more preferred.
- predetermined conductive performance When the content is out of the above range, predetermined conductive performance, high strength (particularly tensile strength), high rigidity (particularly flexural modulus), and dimensional stability may be inferior.
- Graphitei is more advanced than carbon black.
- the glass fiber is not particularly limited and can be appropriately selected from known ones according to the purpose. Examples thereof include chopped strands obtained by cutting a raw yarn.
- the glass fiber preferably has a fiber length of 3 to 6 mm, the glass fiber density of which is converged to 10 k to 20 k with a sizing agent for improving the handling property.
- the fiber diameter of the glass fiber is preferably 5-12, more preferably 7-12 / zm, and still more preferably 7-10 m.
- the fiber length in the conductive thermoplastic resin composition after kneading the glass fibers is preferably from 100 to 500 m, more preferably about 300 m, in view of the reinforcing effect and the conductive performance.
- the content of the glass fiber is preferably 11 to 20 parts by mass with respect to 100 parts by mass of the resin component containing the polyphenylene ether resin and the butadiene-styrene graft copolymer. Is more preferred.
- the method for producing the conductive thermoplastic resin composition can be appropriately selected depending on the particular purpose, for example, polyphenylene ether resin, butadiene styrene graft copolymer, and carbon dioxide.
- the fibers can be preferably prepared by mixing and kneading glass fibers by a known method, and for example, can be melt-kneaded to obtain a pelletized compound.
- the method of forming the pellet-shaped compound is not particularly limited, and the compound can be easily produced by using an apparatus and equipment used for mixing and kneading ordinary thermoplastic resins.
- the components can be simultaneously charged into a premixer such as a tumbler or a Henschel mixer, uniformly mixed, and then kneaded.
- the specific components can be separately supplied to the kneader using a quantitative feeder, a capacity feeder, or the like.
- the mixture of each component is supplied to a melt kneading machine, melted and kneaded, extruded with a die, and pelletized using a pelletizer or the like.
- the kneader examples include a vented single-screw extruder, a different-direction twin-screw extruder, and a same-direction twin-screw extruder.
- a known kneading machine such as a super mixer, a Banbury mixer, a kneader, a tumbler, and a kneader can be used.
- it is manufactured by a continuous extrusion method using a single-screw extruder or a twin-screw extruder, and a side where carbon fibers and glass fibers are fed in the middle of the extruder barrel using a twin-screw extruder.
- a forced side-feed system in which the fibers preferred by the feed system are forced into the extruder barrel.
- the molded article of the present invention is molded using the conductive thermoplastic resin composition of the present invention
- the shape, structure, size, surface resistivity, and the like are not particularly limited. It can be appropriately selected according to the purpose.
- the surface resistivity of the molded article 1. 0 X 10 2 - 1. OX IO " ⁇ is preferably, 1. 0 X 10 2 One 1.0 1.10 8 ⁇ is more preferable.
- the surface resistivity of the molded article can be measured, for example, in accordance with ASTM standard D257.
- the molded article is formed into a desired shape by using the existing thermoplastic resin composition into a desired shape using an existing molding machine such as injection molding or extrusion molding. It can be used as a molded product suitable for semiconductors etc. for predetermined applications such as countermeasures, etc., as gears, cartridges, paper feed guides, etc. It can be suitably used.
- magazines, trays, etc. for packaging electronic components such as ICs (Integrated Circuits), LSIs (Large Scale Integrated Circuits), and LEDs (Light Emitting Diodes). It can be suitably used as a molded article for electronic component packaging molded in the shape of.
- Example 13 The conductive thermoplastic resin compositions of Example 13 and Comparative Example 13 having the compositions shown in Table 1 below were prepared in accordance with a conventional method.
- the polyphenylene ether resin and the butadiene styrene copolymer were uniformly mixed in advance using a blender and then supplied to an extruder.
- each of the obtained pellets was dried with hot air at 120 ° C. for 3 hours, and then each test piece was prepared at an injection temperature of 320 ° C. using an injection molding machine manufactured by Nisshin Pure Oil Industries, Ltd.
- HDT heat distortion temperature
- the measurement was performed according to ISO 179ZleA.
- the total length of the tensile test piece left at room temperature for 48 hours after molding and the mold (cavity) size at the temperature at which the test piece was prepared were measured with calipers, and the following formula was used. (Mold size tensile test piece total length) It was calculated based on the mold size.
- HDT Heat deformation temperature
- the conductive thermoplastic resin compositions of Examples 13 to 13 have excellent heat conductivity, high heat resistance, high strength, high rigidity, and high dimensional stability. Furthermore, a molded article having excellent flame retardancy was obtained. On the other hand, it was found that the molded product using the conductive thermoplastic resin composition of Comparative Examples 13 to 13 could not obtain the predetermined performance.
- the conductive thermoplastic resin composition of the present invention in addition to having excellent conductivity, has high heat resistance, high strength, high rigidity, and high dimensional stability, and has excellent flame retardancy. Therefore, components for electric and electronic devices such as personal computers and printers, gears, ink cartridges, members for electric and electronic components such as paper feed guides, printers, scanners, members for facsimile machines (faxes), cartridges, etc. It can be suitably used for molded parts for packaging electronic components such as OA component members, magazines, trays, and the like.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-421163 | 2003-12-18 | ||
JP2003421163A JP2005179470A (ja) | 2003-12-18 | 2003-12-18 | 導電性熱可塑性樹脂組成物 |
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WO2005059033A1 true WO2005059033A1 (ja) | 2005-06-30 |
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PCT/JP2004/018473 WO2005059033A1 (ja) | 2003-12-18 | 2004-12-10 | 導電性熱可塑性樹脂組成物及びそれを用いた成形品 |
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WO (1) | WO2005059033A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112778746A (zh) * | 2020-12-28 | 2021-05-11 | 金发科技股份有限公司 | 一种高尺寸稳定性导电ppo/ps复合材料及其制备方法和应用 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06287437A (ja) * | 1993-03-30 | 1994-10-11 | Nippon Zeon Co Ltd | 熱可塑性樹脂組成物 |
JPH0782441A (ja) * | 1993-09-13 | 1995-03-28 | Nippon Zeon Co Ltd | 熱可塑性樹脂組成物 |
JPH1180534A (ja) * | 1997-09-02 | 1999-03-26 | Denki Kagaku Kogyo Kk | 耐熱導電性樹脂組成物 |
JP2002248646A (ja) * | 2001-02-27 | 2002-09-03 | Denki Kagaku Kogyo Kk | 制電性を有する成形品の製造方法 |
JP2002309006A (ja) * | 2001-04-16 | 2002-10-23 | Asahi Kasei Corp | 炭素繊維強化ゴム強化スチレン系樹脂射出成形品 |
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JP3105284B2 (ja) * | 1990-03-29 | 2000-10-30 | 三井化学株式会社 | 導電性樹脂組成物 |
JPH0570681A (ja) * | 1991-09-13 | 1993-03-23 | Mitsubishi Petrochem Co Ltd | ポリフエニレンエーテル樹脂組成物およびその製造法 |
JP2002146138A (ja) * | 2000-11-15 | 2002-05-22 | Denki Kagaku Kogyo Kk | 導電性の樹脂組成物 |
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- 2004-12-10 WO PCT/JP2004/018473 patent/WO2005059033A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06287437A (ja) * | 1993-03-30 | 1994-10-11 | Nippon Zeon Co Ltd | 熱可塑性樹脂組成物 |
JPH0782441A (ja) * | 1993-09-13 | 1995-03-28 | Nippon Zeon Co Ltd | 熱可塑性樹脂組成物 |
JPH1180534A (ja) * | 1997-09-02 | 1999-03-26 | Denki Kagaku Kogyo Kk | 耐熱導電性樹脂組成物 |
JP2002248646A (ja) * | 2001-02-27 | 2002-09-03 | Denki Kagaku Kogyo Kk | 制電性を有する成形品の製造方法 |
JP2002309006A (ja) * | 2001-04-16 | 2002-10-23 | Asahi Kasei Corp | 炭素繊維強化ゴム強化スチレン系樹脂射出成形品 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112778746A (zh) * | 2020-12-28 | 2021-05-11 | 金发科技股份有限公司 | 一种高尺寸稳定性导电ppo/ps复合材料及其制备方法和应用 |
CN112778746B (zh) * | 2020-12-28 | 2022-06-14 | 金发科技股份有限公司 | 一种高尺寸稳定性导电ppo/ps复合材料及其制备方法和应用 |
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