KR20130078777A - Polyoxymethylene resins composition - Google Patents
Polyoxymethylene resins composition Download PDFInfo
- Publication number
- KR20130078777A KR20130078777A KR1020110147896A KR20110147896A KR20130078777A KR 20130078777 A KR20130078777 A KR 20130078777A KR 1020110147896 A KR1020110147896 A KR 1020110147896A KR 20110147896 A KR20110147896 A KR 20110147896A KR 20130078777 A KR20130078777 A KR 20130078777A
- Authority
- KR
- South Korea
- Prior art keywords
- resin
- polyoxymethylene
- carbon nanotubes
- parts
- resin composition
- Prior art date
Links
Classifications
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- 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
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/04—Copolyoxymethylenes
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The present invention relates to a polyoxymethylene resin composition, and more particularly, by adding a conductive material to the polyoxymethylene resin to compensate for the dispersibility of the charge, polyoxy exhibiting conductivity and flexural modulus suitable for automobile fuel lines and antistatic components. It relates to a methylene resin composition.
Description
The present invention relates to a polyoxymethylene resin composition (POM) used in the field of automotive parts.
In general, POM is easily prone to static electricity, which causes many problems not only in the resin manufacturing process but also in its use.
POM has been widely used as an automotive fuel part because it has a relatively low volume resistance, and its durability characteristics are superior to other engineering plastics such as chemical resistance, fuel resistance, and dimensional stability.
In addition, POM as an electric and electronic material has been widely applied to substrate transfer rollers and wafer transfer parts of electric parts, and the material technology of the electronic parts industry has been gradually developed to gradually expand its scope to parts using Super Enpra. have.
Typically, the drive temperature of electronic component materials is less than 100 ° C in total and the gasoline automotive fuel system drive temperature is 65 ° C. POM is a material that meets these electronic and automotive fuel operating temperatures.
As such, POM is suitable for use in electronic parts and automotive fuel parts due to its excellent chemical resistance and low water absorption.However, POM is chemical and mechanical due to the continuity of chemical processing due to the high purity of electronic materials and the durability of fuel parts of automobiles recently developed. It is a trend that the physical properties are significantly increased compared to the mechanical properties required in the prior art. Accordingly, electronic and automotive parts manufactured from POM need to satisfy these mechanical properties. However, the mechanical properties of the POM resin decreases when used for a long time due to the increased mechanical properties. However, as electric and electronic parts are gradually developed and diversified in use in automobile parts, flexural elasticity holding force is required for a long time in more severe conditions.
In addition, since POM resin is an electric heat-transfer, a method of imparting conductivity by filling conductive additives such as conductive carbon black carbon nanotube carbon fiber has been conventionally used to be used in substrate transfer lines and automobile fuel systems requiring conductivity. In particular, carbon nanotubes have a feature of maintaining the inherent characteristics of the POM resin by using a smaller amount than the conductive addition compared to the conductive carbon black and carbon fiber used in the past. However, when carbon nanotubes are mixed with POM resin and injected to obtain a conductive POM resin, carbon nanotubes have a low density, and thus carbon nanotubes are uniformly dispersed in the POM resin, thereby making it difficult to obtain desired conductivity.
In the prior art, Korean Patent Laid-Open No. 10-2009-00188 discloses an antistatic thermoplastic resin composition comprising carbon nanotubes uniformly dispersed in a thermoplastic resin, wherein the carbon nanotubes are 0.1 to 5 weights based on the antistatic thermoplastic resin composition. It contains a thermoplastic resin, ion-charged clay, and glass fiber, and shows mechanical and conductive properties. However, this method has a drawback in that the flowability during molding and the moldability are deteriorated because a large amount of ionic clay and glass fiber must be added to express conductivity and mechanical properties.
In addition, US Patent Publication No. 20080121847 is an antistatic polyoxymethylene resin composition prepared by uniformly dispersing carbon nanotubes in a polyoxymethylene resin and mixing them with a rubber resin, wherein the conductivity is 10 6 or less by adding 0.1 to 40% by weight of carbon nanotubes. The conductive polyoxymethylene resin composition of the present invention is somewhat superior in terms of flowability and moldability, while the quantitative input is difficult due to the scattering of carbon nanotubes.
The present invention is to provide a polyoxymethylene resin composition with improved conductivity and flexural modulus.
Accordingly, the present invention is a first preferred embodiment, a polyoxymethylene resin; 20 to 60 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the polyoxymethylene resin; And 1 to 10 parts by weight of carbon nanotubes, wherein the carbon nanotubes are multi-walled carbon nanotubes, polyoxymethylene resin composition characterized in that the crystallinity measured by Raman spectrum is more than I G / I D 0.8 to provide.
Carbon nanotubes according to the embodiment has a purity of 80-95% as measured by TGA (Thermogravimetric Analysis) analysis, BET 200-300 m 2 / g, diameter 10-30nm, doped with polyethylene glycol resin (DOPING) It may be.
The thermoplastic resin according to the embodiment may be selected from the group consisting of an olefin resin, an acrylic resin, a styrene resin, a polyester elastomer, a polyurethane elastomer, and a polystyrene elastomer.
The polyoxymethylene resin composition according to the embodiment may further include at least one of a thermal stabilizer or a release agent.
The polyoxymethylene resin composition according to the above embodiment may have a surface resistance of 1x10 6 or less according to ASTM D257 and a flexural modulus of 30,000 kg / cm 2 according to ASTM D790.
The polyoxymethylene resin composition according to the present invention exhibits excellent conductivity by adding carbon nanotubes while maintaining excellent dimensional stability and chemical resistance of the conventional polyoxymethylene resin composition, and improves flexural modulus and impact strength by thermoplastic resin. Therefore, it can be used for automobile parts, in particular, parts which come into contact with fuel of the automobile engine part.
Hereinafter, the present invention will be described in more detail.
The present invention is polyoxymethylene resin; 20 to 60 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the polyoxymethylene resin; And 1 to 10 parts by weight of carbon nanotubes, wherein the carbon nanotubes are multi-walled carbon nanotubes, and the crystallinity measured by Raman spectrum is greater than I G / I D 0.8 in the polyoxymethylene resin composition. In this regard, the carbon nanotubes are 80 to 95% pure, measured by TGA (Thermogravimetric Analysis) analysis, BET 200 ~ 300 ㎡ / g, diameter 10 ~ 30nm, doped with polyethylene glycol resin (DOPING) Can be.
1) POM resin
The polyoxymethylene resin used in the present invention is a polymer having oxymethylene units as main repeating units, and may be a polyoxymethylene homopolymer obtained by a polymerization reaction containing formaldehyde or trioxane as a main raw material, and mainly oxymethylene units. It may be a polyoxymethylene copolymer consisting of up to 15 parts by weight of oxyalkylene units having 2 to 8 adjacent carbon atoms in the main chain, and also copolymers containing other structural units, ie block copolymers, ter It may be any of a polymer and a crosslinked polymer. Although these may be used by 1 type, or 2 or more types, it is preferable to use a polyoxymethylene copolymer from a thermal stability viewpoint, but if it is POM resin, it is not limited to this.
The manufacturing method of polyoxymethylene resin is not specifically limited, It can manufacture according to a well-known method. As an example of a typical method for producing a polyoxymethylene homopolymer, high purity formaldehyde is introduced into an organic solvent containing a basic polymerization catalyst such as an organic amine, an organic or inorganic tin compound, or a metal hydroxide, and the polymer is filtered. Then, a method of producing by acetalizing the polymer terminal by heating in the presence of sodium acetate in acetic anhydride, and the like. Examples of the method for producing a typical polyoxymethylene copolymer, high purity trioxane and ethylene Copolymerization components such as oxides and 1,3-dioxolane are introduced into an organic solvent such as cyclohexane, and subjected to cationic polymerization using a Lewis acid catalyst such as boron trifluoride diethyl ether complex. Method to prepare by performing stabilization or self-cleaning without using any solvent A method of producing by incorporating trioxane, a copolymerization component and a catalyst into the stirrer and carrying out the bulk polymerization, further decomposes and removes the unstable terminal.
2) thermoplastic resin
Examples of the thermoplastic resin used in the present invention include olefin resins, acrylic resins, styrene resins, polyester elastomers, polyurethane elastomers, and polystyrene elastomers.
The thermoplastic resin may have a content of 20 to 60 parts by weight based on 100 parts by weight of the POM resin in consideration of flexural elasticity and impact strength.
As the olefin resin, for example, a polyolefin resin obtained by polymerizing or copolymerizing olefins such as ethylene, propylene, butene, isoprene and pentene is graft copolymerized with at least one compound selected from unsaturated carboxylic acids or derivatives thereof. Modified polyolefin resin. Specific examples of the polyolefin resin include homopolymers such as polyethylene, polypropylene, polystyrene, polyacrylic acid ester, polymethacrylic acid ester, poly 1-butene, poly 1-pentene, polymethylpentene, and ethylene / α-olefin copolymers. , A polymer obtained by hydrolyzing at least a part of a vinyl alcohol ester homopolymer and a vinyl alcohol ester homopolymer, [a polymer obtained by hydrolyzing at least a part of a copolymer of (ethylene and / or propylene) with a vinyl alcohol ester] [Copolymer obtained by metallizing at least a portion of carboxyl groups in a copolymer of (ethylene and / or propylene) with (unsaturated carboxylic acid and / or propylene) with (unsaturated carboxylic acid and / or unsaturated carboxylic acid ester)], conjugated diene And a block copolymer of a vinyl aromatic hydrocarbon and a hydride of the block copolymer can be used. Polyethylene, polypropylene, ethylene / α-olefin copolymers, [copolymers of (ethylene and / or propylene) with (unsaturated carboxylic acids and / or unsaturated carboxylic esters)], [(ethylene and / or propylene) and (unsaturated A copolymer in which at least a part of the carboxyl group is metal chlorided in the copolymer with carboxylic acid and / or unsaturated carboxylic acid ester). In addition, the ethylene / α-olefin copolymer as used herein has ethylene and a carbon atom having 3 to 20 carbon atoms. It is a copolymer with at least 1 sort (s) of an alpha olefin, and as said C3-C20 alpha olefin, specifically, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene , 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1 Nonadecene, 1-eicosene, 3-methyl-1-butene, 3-methyl-1-pentene, 3-ethyl-1-pentene, 4-methyl-1-pentene, 4-methyl-1-hex Sen, 4,4-dimethyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1-hexene, 3-ethyl-1-hexene, 9-methyl-1-decene, 11-methyl- 1-dodecene, 12-ethyl-1- tetradecene, and combinations thereof are mentioned. Among these α-olefins, a copolymer using an α-olefin having 3 to 12 carbon atoms is preferable in that the mechanical strength is improved. The ethylene / α-olefin-based copolymer preferably has an α-olefin content of 1 to 30 mol%, more preferably 2 to 25 mol%, even more preferably 3 to 20 mol%. Hexadiene, dicyclopentadiene, 2,5-norborna-diene, 5-ethylidenenorbornene, 5-ethyl-2,5-norbornadiene, 5- (1'-propenyl At least one of non-conjugated dienes, such as) -2-norbornene, may be copolymerized. Also, it may be used in [Copolymers of (ethylene and / or propylene) with (unsaturated carboxylic acid and / or unsaturated carboxylic acid ester)]. Unsaturated carboxylic acid is either acrylic acid or methacrylic acid, or a mixture thereof, and unsaturated carboxylic acid esters include methyl esters, ethyl esters, propyl esters, butyl esters, pentyl esters, hexyl esters, heptyl esters, and the like of these unsaturated carboxylic acids. Octyl ester, nonyl ester, decyl ester And the like, or a mixture thereof. Particularly preferred are copolymers of ethylene and methacrylic acid, copolymers of ethylene, methacrylic acid and acrylic acid esters. Among these polyolefin resins, low, medium and high purity polyethylene, Preferred are polypropylene and ethylene / α-olefin copolymers. Especially preferably, it is an ethylene / alpha-olefin copolymer. As an acrylic resin, the homopolymer or copolymer which has acrylic acid, methacrylic acid, or these ester units as a main component, for example, polymethyl methacrylate, methacrylic acid Methyl- (meth) acrylic acid copolymer, methyl methacrylate-alkyl acrylate copolymer, acrylic-styrene copolymer, acrylic rubber, and the like. Examples of the styrene-based resin include polystyrene and styrene- (meth) acrylic acid copolymer. , Acrylonitrile-styrene copolymer, styrene-maleic anhydride copolymer, styrene-methyl acrylate copolymer, styrene-methyl methacrylate copolymer, styrene-acrylonitrile-butadiene copolymer, styrene-acrylonitrile-ethylene air And styrene block copolymers. Examples of the polyester elastomer include aromatic dicarboxylic acids and / or ester oils thereof. Obtained by condensation polymerization of a sieve, a diol having a number average molecular weight of 500 or less, and a poly (alkylene oxide) glycol having a number average molecular weight of 500 or more, a hard segment comprising an aromatic dicarboxylic acid and a diol having a number average molecular weight of 500 or less, an aromatic dicarboxylic acid and Polyetherester block copolymers having a soft segment composed of poly (alkylene oxide) glycol having an average molecular weight of 500 or more. As the aromatic dicarboxylic acid component constituting the polyether ester block copolymer, terephthalic acid and naphthalene carboxylic acid are mainly used. When the amount is less than 30 mol%, other aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and sodium sulfoisophthalic acid are used. Aliphatic dicarboxylic acids, such as carboxylic acid, adipic acid, sebacic acid, dodecaneic acid, and dimer acid, and alicyclic dicarboxylic acids, such as cyclohexanedicarboxylic acid, etc. can also be used. Moreover, a polyether ester block copolymer can be used. Examples of the diol component having a number average molecular weight of 500 or less include ethylene glycol, propylene glycol, 1,2-butanediol, 1,4-butanediol, 1,4-butenediol, 1,5-pentanediol, neopentyl glycol, and 2 Diols, such as -methylpentanediol, 1, 6- hexanediol, and 1, 4- cyclohexane dimethanol, can be used. In addition, these diols can be used individually or in mixture. Among these diol components, ethylene glycol and 1,4-butanediol can be particularly preferably used in view of the polymerizability and crystallinity of the polyether ester block copolymer. A number average molecular weight of 500 or more constituting the polyether ester block copolymer As a poly (alkylene oxide) glycol component, poly (ethylene oxide) glycol, poly (propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (ethylene oxide / propylene oxide) glycol, poly (ethylene oxide / tetramethylene Oxide) glycol, ethylene oxide addition polymer of poly (propylene oxide) glycol, etc. can be used. The number average molecular weight of these poly (alkylene oxide) glycols is not particularly limited as long as it is 500 or more. From the viewpoint of improving the impact resistance and compatibility with the polyoxymethylene resin, those having a number average molecular weight of 500 to 20,000 can be preferably used. Although the copolymerization composition of an ether ester block copolymer is not specifically limited, It is preferable that the unit derived from aromatic dicarboxylic acid and poly (alkylene oxide) glycol, ie, a soft segment, is 5-95 weight part in a polyether ester block copolymer. Do. Especially preferably, it is 20-60 weight part. If it is less than 20 parts by weight, the effect of improving impact resistance is small. If it exceeds 60 parts by weight, the mechanical strength is considerably lowered and cannot be used.
3) carbon nanotube
In general, the carbon nanotubes used in the present invention can be used for all single-walled, double-walled, and multi-walled. In particular, the carbon nanotubes are multi-walled carbon nanotubes, and the degree of crystallinity measured by Raman spectrum is I G /. I D may be greater than 0.8.
Specific carbon nanotubes are, for example, carbon nanotubes manufactured by CVD (chemical vapor deposition) [TGA: purity 80-95%, BET: 200-300 m 2 / g, diameter 10-30nm], carbon nanotubes DOPING polyethylene glycol on the surface of carbon nanotubes for uniform dispersion of carbon nanotubes, and using a certain amount of solidified carbon nanotubes, so that the apparent density exceeds 0.1 (g / cc) and can be dispersed and added It is possible to use carbon nanotubes that can impart conductivity of less than 10 6 to the polyoxymethylene resin composition prepared.
Carbon nanotubes are preferably used 3 to 6 parts by weight based on 100 parts by weight of POM resin. If the content is less than 3 parts by weight, the conductivity improvement effect is insignificant and the conductivity is not satisfactory. In this case, problems such as poor flowability and poor surface properties may occur.
4) additive
Tetrakis (methylene (3,5-dibutylbutyl-4-hydroxy hydrocinamate)) methane as a heat stabilizer and calcium stearate can be added as a release agent within the range which does not impair the objective of this invention.
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.
Examples 1 to 3 and Comparative Examples 1 to 5
Next melted and kneaded in a twin screw extruder heated to 190 ℃ in the composition of Table 1 and made into a chip (Chip) state and melt kneaded by using a screw injection machine heated by drying using a dehumidifying dryer for 100 hours, 4 hours Each specimen was prepared at the same temperature, and the physical properties were measured by the following evaluation method, and the results are shown in Table 2.
(Assessment Methods)
1) Tensile strength: A dumbbell-shaped test piece having a thickness of 3.2 mm according to ASTM D638 was measured at room temperature using a universal material testing machine.
2) Impact strength: In accordance with ASTM D256, 3.2mm thick bar test piece was measured using an impact tester, Izod Notched impact strength.
3) Flexural modulus: 3.2 mm thick rod test specimens were measured at room temperature using a universal testing machine in accordance with ASTM D790.
4) Surface resistance: 100mm X 100mm X 3mm square specimens in accordance with ASTM D257
It was measured at room temperature using a Quadtech 1865 Megohmmeter / IR tester.
A: Polyoxymethylene (KOLON PLASTICS, KOCETAL K700)
B: polyether ester block copolymer (KOLOL PLASTICS, KOPEL KP3340HR)
C: Carbon Nanotube (EM-POWER SDR-3152MP)
Strength (kg / ㎠)
Modulus of elasticity (kg / ㎠)
(Ω)
As shown in Table 2, the polyoxymethylene resin composition according to the embodiment of the present invention was confirmed excellent electrical stiffness as well as permanent conductivity. Therefore, it can be seen that the effect of the POM resin, thermoplastic resin and carbon nanotubes on the conductivity and mechanical properties is great.
As described above, the polyoxymethylene resin composition according to the present invention is excellent in mechanical rigidity, conductivity, flexural modulus, and particularly excellent in conductivity and water resistance, and thus can be very useful as a resin for automobile parts, especially engine part fuel-based parts.
Claims (5)
The carbon nanotubes are multi-walled carbon nanotubes, and polyoxymethylene resin composition characterized in that the crystallinity measured by Raman spectrum is more than I G / I D 0.8.
The carbon nanotubes are 80 to 95% pure, measured by TGA (Thermogravimetric Analysis) analysis, BET 200 to 300 m 2 / g, diameter 10 to 30nm, doped with a polyethylene glycol resin (DOPING) characterized in that Polyoxymethylene resin composition.
The thermoplastic resin is polyoxymethylene resin composition, characterized in that selected from the group consisting of olefin resin, acrylic resin, styrene resin, polyester elastomer, polyurethane elastomer and polystyrene elastomer.
Polyoxymethylene resin composition further comprising at least one of a heat stabilizer or a release agent.
The surface resistance according to ASTM D257 is 1x10 6 or less, the flexural modulus according to ASTM D790 is 30,000 kg / ㎠ characterized in that the polyoxymethylene resin composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110147896A KR20130078777A (en) | 2011-12-30 | 2011-12-30 | Polyoxymethylene resins composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110147896A KR20130078777A (en) | 2011-12-30 | 2011-12-30 | Polyoxymethylene resins composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20130078777A true KR20130078777A (en) | 2013-07-10 |
Family
ID=48991652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020110147896A KR20130078777A (en) | 2011-12-30 | 2011-12-30 | Polyoxymethylene resins composition |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20130078777A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015047042A1 (en) * | 2013-09-30 | 2015-04-02 | 주식회사 엘지화학 | Carbon nanotube having high specific surface area and method for manufacturing same |
| WO2015083893A1 (en) * | 2013-12-06 | 2015-06-11 | 주식회사 엘지화학 | Composite material having improved electrical conductivity and molded part containing same |
| KR20150133421A (en) * | 2014-05-20 | 2015-11-30 | 주식회사 엘지화학 | Processing method for resin composite and plastic goods obtained from same |
| US9956546B2 (en) | 2013-09-30 | 2018-05-01 | Lg Chem, Ltd. | Catalyst for producing carbon nanotubes and carbon nanotubes produced using same |
| KR20220135711A (en) * | 2021-03-31 | 2022-10-07 | 정우석 | Conductive composite material and tray for display manufactured using same |
-
2011
- 2011-12-30 KR KR1020110147896A patent/KR20130078777A/en not_active Application Discontinuation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015047042A1 (en) * | 2013-09-30 | 2015-04-02 | 주식회사 엘지화학 | Carbon nanotube having high specific surface area and method for manufacturing same |
| US9956546B2 (en) | 2013-09-30 | 2018-05-01 | Lg Chem, Ltd. | Catalyst for producing carbon nanotubes and carbon nanotubes produced using same |
| US11090635B2 (en) | 2013-09-30 | 2021-08-17 | Lg Chem, Ltd. | Carbon nanotube having high specific surface area and method for manufacturing same |
| WO2015083893A1 (en) * | 2013-12-06 | 2015-06-11 | 주식회사 엘지화학 | Composite material having improved electrical conductivity and molded part containing same |
| KR20150066208A (en) * | 2013-12-06 | 2015-06-16 | 주식회사 엘지화학 | Composite having improved conductivity and plastics comprising same |
| CN106062062A (en) * | 2013-12-06 | 2016-10-26 | Lg化学株式会社 | Composite material having improved electrical conductivity and molded part containing same |
| KR20150133421A (en) * | 2014-05-20 | 2015-11-30 | 주식회사 엘지화학 | Processing method for resin composite and plastic goods obtained from same |
| KR20220135711A (en) * | 2021-03-31 | 2022-10-07 | 정우석 | Conductive composite material and tray for display manufactured using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Srithep et al. | Processing and characterization of recycled poly (ethylene terephthalate) blends with chain extenders, thermoplastic elastomer, and/or poly (butylene adipate‐co‐terephthalate) | |
| KR20120118737A (en) | Composition of polyketone with high impact strength | |
| CN101275011B (en) | High-shock-resistance polylactic acid composite material, preparation thereof and use thereof | |
| CN109689782B (en) | Polybutylene terephthalate resin composition and molded article | |
| KR20130078777A (en) | Polyoxymethylene resins composition | |
| KR101438899B1 (en) | Eco-friendly plastic compositions with excellent mechanical property | |
| WO2008075776A1 (en) | Polybutylene terephthalate resin composition | |
| US20060142422A1 (en) | Hydrolysis resistant polyester compositions and articles made therefrom | |
| JP6264956B2 (en) | Polybutylene terephthalate resin composition for insert molding | |
| CN111978701A (en) | Conductive polyester composite material and preparation method and application thereof | |
| TWI726894B (en) | Method for improving comparative tracking index and use of epoxy compound and ethylene ethyl acrylate copolymer | |
| KR20110108976A (en) | Polyamide resin composition and moldings including the same | |
| KR101124989B1 (en) | Polylactic acid Composites | |
| US20110190448A1 (en) | Polypropylene-polylactic acid composites | |
| KR20130008001A (en) | Polyoxymethylene resins composition | |
| CN102775683B (en) | Scratch-resistant PP/HDPE (polypropylene/high-density polyethylene) plastic for automobile interior decorations and preparation method thereof | |
| Bose et al. | Compatibilizing effect of functionalized polyphosphazene on the properties of poly (phenylene oxide)/vectra a blend system | |
| KR20120090127A (en) | Polyamide resin composition and moldings including the same | |
| KR102173834B1 (en) | Thermoplastic resin composition and article produced therefrom | |
| JP2020019950A (en) | Polybutylene terephthalate resin composition and method for producing the same, and metal resin composite | |
| KR101610130B1 (en) | Polymer resin composition for automotive interior or exterior material, article for automotive interior or exterior and preparing method of the same | |
| JP6464887B2 (en) | Polybutylene terephthalate resin composition and insert molded article using the same | |
| KR102463837B1 (en) | Thermoplastic elastic resin composition and product prepared by the same | |
| KR20060052162A (en) | Conductive polyacetal resin composition | |
| JP6711079B2 (en) | Polybutylene terephthalate resin composition and molded article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal |