KR20110108976A - Polyamide resin composition and moldings including the same - Google Patents
Polyamide resin composition and moldings including the same Download PDFInfo
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- KR20110108976A KR20110108976A KR1020100028501A KR20100028501A KR20110108976A KR 20110108976 A KR20110108976 A KR 20110108976A KR 1020100028501 A KR1020100028501 A KR 1020100028501A KR 20100028501 A KR20100028501 A KR 20100028501A KR 20110108976 A KR20110108976 A KR 20110108976A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/06—Propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- 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
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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
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
Abstract
The present invention relates to a low hygroscopic conductive polyamide resin composition, in particular 40 to 60 parts by weight of polypropylene, 10 to 20 parts by weight of polypropylene grafted with maleic anhydride, and carbon fiber 20 to 100 parts by weight of polyamide resin. It relates to a polyamide resin composition comprising from 70 parts by weight to a polyamide resin molded article comprising the same.
The molded article made of the polyamide resin composition of the present invention is excellent in conductivity and exhibits low hygroscopicity, dimensional stability, chemical resistance and low specific gravity, and thus can be effectively used for automobile parts, particularly fuel-based parts.
Description
The present invention relates to a low hygroscopic conductive polyamide resin composition, and more particularly, a polyamide having excellent conductivity and exhibiting low hygroscopicity, dimensional stability, chemical resistance, and low specific gravity to be suitable for automotive parts, particularly fuel-based parts. It relates to a resin composition and a molded article comprising the same.
Recently, with the development of the automotive industry, research on the substitution of plastics for electrical / electronic parts has been actively conducted in terms of light weight, low manufacturing cost, improved design freedom, and simplified manufacturing process. Polyamide resins in plastics are in the spotlight as an important substitute material for such research and development, and in the case of automobiles, they have excellent advantages as a substitute material for aluminum or steel. In particular, there are many attempts to apply polyamide resin even in the case of automotive fuel-based parts, and researches that are applied to polyamide resin in various vehicles are being actively conducted because of excellent mechanical strength, moldability, and long-term physical properties.
In order to further improve the disadvantages of the polyamide resin as a fuel material component for automobiles to provide a high-performance polyamide resin, the necessity for remarkably improving stiffness and impact resistance as well as dimensional deformation due to moisture absorption has been urgently required. In particular, automotive fuel-based components need technical elements to prevent the risk of explosion, conductive (10 -6 Ω or more), corrosion by fuel, crack generation, and dimensional deformation due to moisture. In order to satisfy this problem, it is indispensable to improve the stiffness, impact resistance, and high water absorption properties, which are disadvantages of the polyamide resin. In addition, in order to be used as a vehicle fuel-based component material, it is required to have a high heat distortion temperature characteristics according to the characteristics of the engine operating in an environment of 150 ℃ or more.
Therefore, it has excellent conductivity to prevent the risk of explosion during manufacturing of fuel-based parts of the automobile engine part, and has excellent rigidity and conductivity, low hygroscopicity, and high thermal deformation to prevent corrosion and cracks caused by fuel. Research on the development of a polyamide resin composition that can ensure the temperature is required.
The present invention is to provide a polyamide resin composition that can ensure excellent rigidity and conductivity, low hygroscopicity, high heat distortion temperature.
The present invention also provides a polyamide resin molded article prepared by including the polyamide resin composition.
The present invention provides a polyamide resin composition comprising 30 to 70 parts by weight of polypropylene, 10 to 20 parts by weight of polypropylene grafted with maleic anhydride, and 20 to 75 parts by weight of carbon fiber, based on 100 parts by weight of polyamide resin. do.
This invention also provides the polyamide resin molded article containing a polyamide resin composition.
Hereinafter, the present invention will be described in more detail.
The present invention has excellent conductivity to prevent the risk of explosion when applied as an automotive fuel-based component, low hygroscopicity, dimensional stability, chemical resistance, low specific gravity characteristics to minimize the possibility of corrosion and cracks caused by fuel This remarkably improved low hygroscopic conductive polyamide resin composition is provided.
In particular, the polyamide resin composition of the present invention is excellent in conductivity that can flow electricity by adding carbon fiber to the polyamide resin, and significantly improved low moisture by alloying polyamide resin and polypropylene in an optimum range The absorption rate is secured by the low water absorption rate, so that the dimension is stable and the chemical resistance is excellent, so that it can be effectively used for automobile parts processed by injection molding, in particular, parts in contact with the fuel of the automobile engine part.
The inventors of the present invention applied polyamide as a base resin while researching on superior stiffness, conductivity, low hygroscopicity, and high heat deformation temperature materials than conventional nylon 12 materials and components, and grafted polypropylene and maleic anhydride By adding polypropylene and carbon fiber in an optimum content range, the polyamide resin composition was developed to improve water absorption and dimensional stability and to secure excellent toughness and conductivity simultaneously.
Hereinafter, a polyamide resin composition and a molded article including the same according to a specific embodiment of the present invention will be described in detail. However, this is presented as an example of the invention, whereby the scope of the invention is not limited, it is apparent to those skilled in the art that various modifications to the embodiments are possible within the scope of the invention.
In addition, unless otherwise indicated throughout the specification, "including" or "containing" refers to the inclusion of any component (or component) without particular limitation and refers to the addition of another component (or component). It cannot be interpreted as excluding.
In one embodiment of the invention, the present invention provides a polyamide resin composition comprising polypropylene, maleic anhydride grafted polypropylene, and carbon fiber based on polyamide resin. Particularly, the polyamide resin composition may include 30 to 70 parts by weight of polypropylene, 10 to 20 parts by weight of polypropylene grafted with maleic anhydride, and 20 to 75 parts by weight of carbon fiber based on 100 parts by weight of polyamide resin. Can be.
The polyamide resin used in the present invention is not particularly limited but may be nylon 6, nylon 66, or mixtures thereof. The polyamide resin may be a relative viscosity of 2.5 to 3.3, preferably 2.6 to 3.0 (20 ℃, based on the value measured by a solution of 1 g of polymer in 100 mL of 96% sulfuric acid). When the relative viscosity of the polyamide resin is 2.5 or more, excellent effects can be obtained in terms of improving rigidity and dimensional stability, and in 3.3 or less, surface defects and unmolding phenomena due to deterioration of fluidity can be prevented.
In addition, the average degree of polymerization of the polyamide resin is 200 to 20,000, preferably 5,000 to 10,000 can be used to improve the excellent mechanical rigidity, dimensional stability, surface properties and heat resistance properties of the final resin composition.
The polyamide resin may be made into chips in order to manufacture a final resin composition, and then sufficiently dried in a dehumidifying dryer.
In the polyamide resin composition of the present invention, the polypropylene resin serves to improve low hygroscopicity, chemical resistance, low specific gravity and processability. As the polypropylene resin, a propylene homopolymer or a propylene ethylene copolymer is used. The polypropylene resin may be included in an amount of 30 to 70 parts by weight, preferably 40 to 60 parts by weight, based on 100 parts by weight of polyamide resin. When the content of the polypropylene resin is less than 30 parts by weight, the water absorption rate in the final molded product may not be satisfactory, resulting in poor dimensional stability, and when it exceeds 70 parts by weight, the heat deformation temperature may drop significantly, resulting in poor heat resistance in the final product. have.
As described above, in the present invention, the polyamide resin and the polypropylene may be alloyed in an optimum range to secure a significantly improved low water absorption. However, since the polypropylene is a completely nonpolar material, it is not compatible with other types of polymers, is not compatible with pigments, fillers, etc., and in particular, it is difficult to blend with other types of polymers. Therefore, to compensate for this disadvantage, the polyamide resin composition of the present invention comprises polypropylene grafted with maleic anhydride together with the polypropylene as a compatibilizer.
The polypropylene grafted with maleic anhydride has a role of improving usability, processability, and productivity of the polyamide resin and the polypropylene resin. In particular, the polyamide resin composition has improved impact properties and long-term mechanical properties. Can be prevented from deteriorating. The polypropylene grafted with maleic anhydride may be included in an amount of 10 to 20 parts by weight, preferably 11 to 18 parts by weight, based on 100 parts by weight of the polyamide resin. When the content of the maleic anhydride-grafted polypropylene resin is less than 10 parts by weight, the effect of improving the usability as a compatibilizer is insignificant, and when added in excess of 20 parts by weight, a problem of lowering the mechanical properties of the final product may occur. Can be.
In addition, the polypropylene grafted with maleic anhydride may be a graft rate of maleic anhydride is 0.5% to 6.0%, preferably 0.6% to 4.0%, more preferably 0.7% to 3.0%. In this case, when the graft ratio of maleic anhydride is 0.5% or more, compatibility with the polyamide resin and the polypropylene resin may improve the reforming efficiency, and when it is 6.0% or less, high viscosity may be prevented and kneading may be facilitated.
The polyamide resin composition of the present invention also includes carbon fiber in order to improve conductivity and mechanical rigidity. The carbon fiber may include 20 to 75 parts by weight, preferably 25 to 70 parts by weight based on 100 parts by weight of polyamide resin. If the carbon fiber content is less than 20 parts by weight, it may be difficult to eliminate the risk of explosion when applied as a fuel-based component of the automotive engine part because the conductivity improvement effect is insignificant, and the mechanical rigidity in the final product may not be satisfactory. On the other hand, when the content of the carbon fiber exceeds 75 parts by weight may cause a problem in that the flowability and surface properties are poor in processing.
In addition, the carbon fiber includes a plurality of monofilaments, the average diameter of the monofilament is 3 to 20 ㎛, preferably 5 to 15 ㎛, the average length of the monofilament is 0.1 to 20 mm, preferably 3 to 15 mm, the number of filaments can be 5,000 to 40,000 strands, preferably 10,000 to 30,000 strands. If the number of filaments exceeds 40,000 strands, the dispersibility is remarkably inferior in processing. If the number of filaments is less than 5,000 strands, the concentration of carbon fibers is lowered, and the insertability in the extruder is significantly reduced, making it difficult to secure productivity.
In addition, the polyamide resin composition of the present invention may further include a variety of additives in an appropriate range within a range that does not impair the purpose of the polypolyamide resin and polypropylene, maleic anhydride grafted polypropylene, carbon fiber and the like. have. For example, the resin composition of the present invention may further include tetrakis (methylene (3,5-dibutylbutyl-4-hydroxy hydrocinnamate)) methane as a heat stabilizer, calcium stearate as a release agent, and the like.
The polyamide resin composition of the present invention may be produced by melt extrusion kneading or the like of the polypropylene, maleic anhydride grafted polypropylene, carbon fiber, and the like using a polypolyamide resin as a base resin.
In another embodiment of the invention, the invention provides a polyamide resin molded article comprising the polyamide resin composition as described above. In particular, the polyamide resin molded article has a surface resistance of 1 × 10 6 Pa or less, preferably 1 × 10 5 Pa or less by ASTM evaluation method D257, and a water absorption of 0.30% or less, preferably 0.28% or less by ASTM evaluation method D570. The heat distortion temperature according to ASTM evaluation method D648 may be at least 235 ° C, preferably at least 240 ° C.
In addition, the polyamide resin molded article has a tensile strength of 1,200 kg / cm 2 or more or 1,200 to 2,500 kg / cm 2 , preferably 1,300 kg / cm 2 or more or 1,300 to 2,500 kg / cm 2 by ASTM evaluation method D638, ASTM Flexural modulus of 75,000 kg / cm 2 or more or 75,000 to 130,000 kg / cm 2 , preferably 80,000 kg / cm 2 or more or 80,000 to 12,8000 kg / cm 2 by the evaluation method D790, and impact strength 5.0 according to ASTM evaluation method D256. It may be at least kg · cm / cm or 5.0 to 15.0 kg · cm / cm, preferably at least 5.8 kg · cm / cm or at least 5.8 to 13.0 kg · cm / cm.
The polyamide resin molded article may be used for applications such as automotive engine parts, fuel connectors, quick connectors, ABS lip seals, and single-axis repeat drive bearings.
In the present invention, matters other than those described above can be added or subtracted as required, and therefore, the present invention is not particularly limited thereto.
According to the present invention, the polyamide resin is used as the base resin, and polypropylene, maleic anhydride grafted polypropylene, and carbon fiber are included in an optimum range, so that electricity can flow and have excellent rigidity and high heat deformation temperature. The present invention provides a polyamide resin composition having low hygroscopicity, dimensional stability, chemical resistance, and low specific gravity at the same time, and a molded article including the same.
In particular, the polyamide resin composition of the present invention can be very preferably used in the manufacture of automobile parts that are processed by injection molding with excellent conductivity and low water absorption, in particular, parts that come into contact with the fuel of the automobile engine part.
Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.
Example 1-3 and Comparative example 1-5
With a composition as shown in Table 1 below, nylon 66 having a relative viscosity of 2.7, an ethylene-propylene copolymer having a weight average molecular weight of 8,000, and a polypropylene graft copolymer having a maleic anhydride graft ratio of 0.7% (MaH) -PP, Propylene grafted with maleic acid anhydride), a polyamide resin composition was prepared using carbon fiber having an average length of 6 mm, an average diameter of 10 μm, and a filament number of 24,000 strands. In particular, the polyamide resin composition was prepared in a chip state after melt-kneading each component in a twin screw extruder heated to 280 ° C.
(Parts by weight)
(Parts by weight)
(Parts by weight)
(Parts by weight)
The polyamide resin compositions of Examples 1 to 3 and Comparative Examples 1 to 5 prepared in the above chip state were dried using a dehumidifying dryer at 100 ° C. for 6 hours and heated using a screw injection molding machine, which was the same as melt kneading. Each specimen was manufactured by temperature, and the physical properties were measured by the following evaluation method.
1) Tensile strength: In accordance with ASTM D638, a dumbbell-type test piece of 3.2 mm thickness was measured at room temperature using a universal testing machine.
2) Impact Strength: In accordance with ASTM D256, 3.2 mm thick rod specimens were measured using an Izod Notched impact strength using an impact tester.
3) Flexural modulus: A 3.2 mm thick rod test piece was measured at room temperature using a universal testing machine in accordance with ASTM D790.
4) Surface Resistance: 100 mm × 100 mm × 3 mm square specimens were measured at room temperature using a Quadtech 1865 Megohmmeter / IR tester according to ASTM D257.
5) Heat Deflection Temperature: According to ASTM D648, a 6.4 mm thick bar test piece was measured with a heat deflection temperature tester at a load of 18.6 kg / cm 2 .
6) Moisture Absorption: According to ASTM D570, a disc specimen having a diameter of 100 mm and a thickness of 2 mm was measured by immersion in 24 hr pure water.
The measurement results of the physical properties of the polyamide resin compositions of Examples 1 to 3 and Comparative Examples 1 to 5 are as shown in Table 2 below.
burglar
(kg / ㎠)
Modulus
(kg / ㎠)
(kgcm / cm)
(Ω)
Temperature
(℃)
Absorption rate
(%)
As shown in Table 2, the polyamide resin composition of Examples 1 to 3 according to the present invention is a polypolyamide resin as a base resin, polypropylene, maleic anhydride graft polypropylene, and carbon fiber in the optimum range, respectively By including, it can be seen that not only expresses excellent mechanical rigidity but also excellent conductivity and low hygroscopicity.
In particular, all of the polyamide resin molded articles according to Examples 1 to 3 have improved conductivity with surface resistance of 1 × 10 4 to 1 × 10 6 Ω, and have tensile strength of 1,470 to 2,150 kg / cm 2 and a flexural modulus of 82,890 To 120,450 kg / cm 2 It can be seen that the impact strength has a very good toughness of 6.9 to 10.5 kg · cm / cm. Along with such excellent mechanical properties and improved conductivity, the polyamide resin molded article according to Examples 1 to 3 can be seen that the low moisture absorption is significantly improved to about 0.19% to 0.27%. In addition, it can be seen that the molded article has a very good dimensional stability at a heat deformation temperature of 242 to 247 ° C.
On the other hand, the polyamide resin molded article according to Comparative Examples 1 to 5 can be seen that the mechanical properties, flame retardancy, flexibility can not be secured to an excellent degree at the same time. Particularly, in Comparative Example 1, since the polyamide resin, the alloyed polypropylene resin, the compatibilizer, and the carbon fiber were not included in the optimum range, the water absorption rate was similar to those of Examples 1 to 3, but The heat deformation temperature drops significantly to 185 ° C. and may cause problems such as easy deformation when used in fuel parts of an automobile engine part. In the case of Comparative Examples 2 to 3, the surface resistance and heat deformation temperature were similar to those of Examples 1 to 3, but the water absorption rate was significantly increased to 0.80% and 0.35%, respectively, and the dimensional stability was not good due to the high water absorption rate. It can be seen. In addition, in Comparative Examples 4 and 5, as the content of the carbon fiber and the content of the polypropylene resin is not optimized, it can be seen that the mechanical properties such as tensile strength, flexural strength, flexural modulus and impact strength are significantly reduced.
As described above, the polyamide resin compositions of Examples 1 to 3 have excellent mechanical stiffness, conductivity, and heat deformation temperature, and in particular, have excellent conductivity and water resistance, and thus can be very useful as resins for automobile parts, especially engine part fuel system parts. have.
Claims (10)
30 to 70 parts by weight of polypropylene,
10 to 20 parts by weight of polypropylene grafted with maleic anhydride, and
20 to 75 parts by weight of carbon fiber
Polyamide resin composition comprising a.
The polyamide resin is nylon 6, nylon 66, or a mixture thereof.
Wherein said polypropylene is a propylene homopolymer or a propylene ethylene copolymer.
The polypropylene grafted with maleic anhydride has a polyamide resin composition having a graft ratio of maleic anhydride of 0.5% to 6%.
The carbon fiber comprises a plurality of monofilaments, the average diameter of the monofilament is 3 to 20 ㎛, the average length of the monofilament is 0.1 to 20 mm, the number of filaments is 5,000 to 40,000 strands polyamide resin composition.
Wherein said carbon fiber is sized with an epoxy resin or a polyurethane resin.
A polyamide resin composition further comprising at least one additive selected from the group consisting of tetrakis (methylene (3,5-dibutylbutyl-4-hydroxy hydrocinamate)) methane and calcium stearate.
Surface resistance 1 × 10 6 Ω or less according to ASTM evaluation method D257,
0.30% or less water absorption by ASTM evaluation method D570,
Heat deflection temperature 235 ℃ or more according to ASTM evaluation method D648
Polyamide resin molded article.
Polyamide resin molded parts for use in automotive engine parts, engine parts, quick connectors, ABS lip seals, or single-axis repeat drive bearings.
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| KR1020100028501A KR20110108976A (en) | 2010-03-30 | 2010-03-30 | Polyamide resin composition and moldings including the same |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020100028501A KR20110108976A (en) | 2010-03-30 | 2010-03-30 | Polyamide resin composition and moldings including the same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101476502B1 (en) * | 2012-05-16 | 2014-12-24 | 주식회사 엘지화학 | Thermoplastic Resin Compositions Having Good Paintability |
| KR20160024506A (en) | 2014-08-26 | 2016-03-07 | 현대자동차주식회사 | Carbon Fiber-reinforced Polyamide Resin Composition having excellent Impact Resistance |
| US9499689B2 (en) | 2013-12-17 | 2016-11-22 | Hyundai Motor Company | Carbon fiber reinforced polypropylene resin composition with excellent molding property |
| KR20180067049A (en) | 2016-12-12 | 2018-06-20 | 현대자동차주식회사 | Polyamide complex composition reinforced with glass fiber and carbon fiber |
| WO2020096400A1 (en) * | 2018-11-08 | 2020-05-14 | (주) 엘지화학 | Conductive concentrate resin composition, conductive polyamide resin composition, manufacturing method therefor, and molded product |
| WO2020097095A1 (en) * | 2018-11-06 | 2020-05-14 | CLEARink Display, Inc. | High brightness retroreflector for static and switchable image displays |
| KR20210047842A (en) * | 2018-11-08 | 2021-04-30 | 주식회사 엘지화학 | Conductive concentrate resin composition, conductive polyamide resin composition, method for preparing the same and molding products |
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2010
- 2010-03-30 KR KR1020100028501A patent/KR20110108976A/en not_active Application Discontinuation
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101476502B1 (en) * | 2012-05-16 | 2014-12-24 | 주식회사 엘지화학 | Thermoplastic Resin Compositions Having Good Paintability |
| US9499689B2 (en) | 2013-12-17 | 2016-11-22 | Hyundai Motor Company | Carbon fiber reinforced polypropylene resin composition with excellent molding property |
| KR20160024506A (en) | 2014-08-26 | 2016-03-07 | 현대자동차주식회사 | Carbon Fiber-reinforced Polyamide Resin Composition having excellent Impact Resistance |
| KR20180067049A (en) | 2016-12-12 | 2018-06-20 | 현대자동차주식회사 | Polyamide complex composition reinforced with glass fiber and carbon fiber |
| WO2020097095A1 (en) * | 2018-11-06 | 2020-05-14 | CLEARink Display, Inc. | High brightness retroreflector for static and switchable image displays |
| WO2020096400A1 (en) * | 2018-11-08 | 2020-05-14 | (주) 엘지화학 | Conductive concentrate resin composition, conductive polyamide resin composition, manufacturing method therefor, and molded product |
| KR20200053701A (en) * | 2018-11-08 | 2020-05-19 | 주식회사 엘지화학 | Conductive concentrate resin composition, conductive polyamide resin composition, method for preparing the same and molding products |
| CN111670220A (en) * | 2018-11-08 | 2020-09-15 | 株式会社Lg化学 | Conductive concentrated resin composition, conductive polyamide resin composition, process for producing the same, and molded article |
| JP2021509124A (en) * | 2018-11-08 | 2021-03-18 | エルジー・ケム・リミテッド | Conductive concentrated resin composition, conductive polyamide resin composition, its manufacturing method and molded product |
| KR20210047842A (en) * | 2018-11-08 | 2021-04-30 | 주식회사 엘지화학 | Conductive concentrate resin composition, conductive polyamide resin composition, method for preparing the same and molding products |
| CN111670220B (en) * | 2018-11-08 | 2023-03-10 | 株式会社Lg化学 | Conductive concentrated resin composition, conductive polyamide resin composition, method for producing same, and molded article |
| US11912868B2 (en) | 2018-11-08 | 2024-02-27 | Lg Chem, Ltd. | Conductive concentrated resin composition, conductive polyamide resin composition comprising conductive concentrated resin composition, method of preparing same and molded article |
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