WO2014104447A1 - 전기전도성이 우수하면서 가공특성 및 열안정성이 개선된 탄소나노튜브-폴리옥시메틸렌 수지 조성물 및 그의 성형품 - Google Patents
전기전도성이 우수하면서 가공특성 및 열안정성이 개선된 탄소나노튜브-폴리옥시메틸렌 수지 조성물 및 그의 성형품 Download PDFInfo
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- WO2014104447A1 WO2014104447A1 PCT/KR2012/011757 KR2012011757W WO2014104447A1 WO 2014104447 A1 WO2014104447 A1 WO 2014104447A1 KR 2012011757 W KR2012011757 W KR 2012011757W WO 2014104447 A1 WO2014104447 A1 WO 2014104447A1
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- resin composition
- polyoxymethylene resin
- carbon nanotube
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/159—Carbon nanotubes single-walled
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
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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
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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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
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/02—Polyacetals containing polyoxymethylene sequences only
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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
- C08J2359/00—Characterised by the use of polyacetals containing polyoxymethylene sequences only
- C08J2359/02—Copolyoxymethylenes
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Definitions
- the present invention relates to a carbon nanotube? Polyoxymethylene resin composition having excellent electrical conductivity and improved processing characteristics and thermal stability, and a molded article obtained from the resin composition.
- polyoxymethylene (POM) resin has excellent mechanical properties, fatigue resistance, abrasion resistance, creep resistance, long-term dimensional stability, and various physical properties that are required from various electric and electronic parts to automotive parts. It is widely used in parts. In electronic and electronic parts, antistatic properties such as anti-electrostatic discharge (Anti-ESD), dust pollution prevention, etc. are required to prevent malfunctions and contamination of the parts. Electrical conductivity is additionally required for its physical properties. . Polyoxymethylene resin is an insulating material having a high surface resistivity. In the past, surfactants, metal powders, metal fibers, conductive carbon black, and the like were added to provide electrical conductivity.
- a method of adding a surfactant is to impart an antistatic function of the molded article by allowing the surfactant to move to the surface of the polyoxymethylene resin and bond with moisture in the atmosphere.
- the variation in surface resistance depends on the surrounding environment. Generation, antistatic duration is reduced, and it has a limit of providing significantly lower conductivity than when metal powder or conductive carbon black is added.
- ⁇ Adding metal powder or metal fiber to polyoxymethylene resin In the case of imparting conductivity, the mechanical strength, which is a characteristic of the polyoxymethylene resin, is weakened, and the corrosion resistance is weakened due to the added metal powder, and further, the industrial application is limited due to the high weight. There is.
- carbon nanotubes have been applied to various fields such as the use of semiconductor devices, transparent electrodes, field emission devices, electromagnetic shielding materials, and conductive fillers of various composite resins. These carbon nanotubes have great potential as industrial materials because of their excellent electrical properties, mechanical strength, chemical stability, etc., and are single-walled carbon nanotubes (SWCNTs) in the form of two-dimensional cylindrical rolls. And multi-walled stacked single-walled carbon nanotubes It is divided into multi-walled carbon nanotubes ( ⁇ CNT).
- SWCNTs single-walled carbon nanotubes
- ⁇ CNT multi-walled carbon nanotubes
- an in-situ polymerization method in which carbon nanotubes are mixed with a monomer and then polymerized, polyoxymethylene is dissolved in a solvent to form a solution and mixed with carbon nanotubes.
- Solution mixing bulk mixing of polyoxymethylene resin powder and carbon nanotubes at high speed, melt mixing of carbon nanotubes in polyoxymethyleneol melt Etc.
- the polymerization method and the solution mixing method are required to disperse the carbon nanotubes by ultrasonic waves, and also require a large-scale reaction tank, which increases the time required for the production process and increases the cost.
- the polyoxymethylene resin composition according to the present invention not only has excellent mechanical strength, but also has excellent thermal stability, significantly lower formaldehyde gas emission, no problem in production process and secondary processability, and adding a small amount of carbon nanotubes to the layer powder.
- carbon nanotube-polyoxymethylene composites with electrical characteristics.
- the present invention uniformly disperses carbon nanotubes in a polyoxymethylene resin, so that even if a small amount of carbon nanotubes are added, the carbon nanotube-polyoxymethylene composite having excellent electrical conductivity while maintaining the mechanical properties of the polyoxymethylene, and a method of manufacturing the same To provide.
- a processing characteristic modifier to the polyoxymethylene resin composition containing carbon nanotubes, it reduces shear stress during compounding, lowers the amount of formaldehyde gas generated in the polyoxymethylene resin, and voids and tears during extrusion of molded products. I want to improve. Using such a resin composition to provide a polyoxymethylene resin molded article excellent in thermal stability, electrical conductivity and processing characteristics.
- the present invention relates to a carbon nanotube-polyoxymethylene resin composition
- the resin composition is based on 100 parts by weight of polyoxymethylene, 1 to 6 parts by weight of carbon nanotubes And 0.3 to 3 parts by weight of a processing property modifier, wherein the processing property modifier is provided with a resin composition which is a polymer having a core-shell structure.
- the polyoxymethylene resin may have a melt index of 0.1-100 g / 10 min.
- the carbon nanotubes may have a BET surface area of 150 to 300 m7g, a diameter of 10 to 4 () ⁇ , and a length of 1 to 25 / m.
- the polymer having a core shell structure may be composed of a core of a rubber polymer and a shell of a glass polymer.
- the rubbery polymer may be an alkyl acrylate having 2 to 8 carbon atoms of an alkyl group, and butyl acrylate is more preferable.
- the glassy polymer may be a vinyl copolymer having an oxygen-containing polar group, and the oxygen-containing polar group may be one or two or more selected from the group consisting of a hydroxyl group, an ether bond group, an amide group, and a nitro group.
- the group having an ether bond may be a glycidyl group.
- the vinyl copolymer having an oxygen-containing polar group is at least one oxygen selected from the group consisting of hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate and glycidyl (meth) acrylate. It may be polymerized from a monomer having 2 to 5 containing polar groups, and the vinyl-based copolymer having an oxygen-containing polar group is an alkyl (meth) acryl having a monomer having the oxygen-containing polar group and an alkyl group having 1 to 4 carbon atoms. It may be a copolymer of a monomer selected from ethylene, styrene, vinylluene or aromatic vinyl or aromatic vinylidene having 2 to 8 carbon atoms, vinyl cyanide or vinylidene cyanide.
- the shell may be 10 to 50 weight 3 ⁇ 4 of the total weight of the polymer having a core shell structure.
- the processing property modifier is a mixture comprising a core-shell structure polymer and an ionomer in a weight ratio of 1: 1 to 10: 1, and the ionomer is an air composed of ⁇ -olefin and methylacrylic acid or derivatives thereof.
- the hydrogen of the carboxyl group contained in the copolymer may be substituted with an ion of a metal selected from the group consisting of Zn, Na, Mg or Li.
- a molded article formed of the carbon nanotube-polyoxymethylene resin composition is provided, and a molded article having a formaldehyde gas emission amount of 20 mg / kg or less measured by the VDA 275 method is provided.
- the surface resistance can be 10 2 -10 9 Q / sq.
- the carbon nanotube-polyoxymethylene resin composition maintains excellent mechanical properties inherent in the polyoxymethylene resin. Carbon nano-rubber is uniformly dispersed, and the surface resistance is 10 2 to 10 9 Q / sq to obtain a polyoxymethylene resin composition having excellent electrical properties.
- there is no void or tearing phenomenon during the processing of the extruded article produced by the resin composition according to the embodiment of the present invention can maximize the processing characteristics of the product.
- Example 1 is a photograph showing a surface of a molded article of a plate obtained using the resin composition of Example 5 of the present invention.
- FIGS. 2 and 3 are photographs of the molded article surface of the plate obtained by using the resin compositions of Comparative Examples 3 and 9, respectively, Figure 2 is a photograph showing the molded article surface showing the tearing phenomenon, Figure 3 is a molded article having a void It is photograph showing surface.
- the present invention relates to a carbon nanotube-polyoxymethylene resin composition having excellent electrical conductivity and improved processing stability and thermal stability, and a molded article thereof.
- the present invention will be described in more detail.
- polyoxymethylene resin is used as the main resin of the carbon nanotube-polyoxymethylene resin composition.
- the polyoxymethylene resin may be a homopolymer or a copolymer having an oxymethylene group (-CH 2 0-) as a main structural unit, and it is more preferable to use a copolymer of an oxymethylene group and 1,3'dioxolane. desirable .
- the oxymethylene copolymer can be obtained by random copolymerization of a mixture of formaldehyde or a cyclic oligomer of trioxane or tetraoxane, preferably a cyclic oligomer of trioxane and a 1,3-dioxolane monomer.
- the polyoxymethylene copolymer of the present invention can be obtained by adding the 1,3-dioxolane comonomer to the main monomer trioxane or tetraoxane and randomly copolymerizing in the presence of a Lewis acid catalyst. It has a melting point of at least 15 CTC and at least two bonding carbon atoms in the main chain.
- the ratio of the oxymethylene bond structure to the oxymethylene repeating unit may range from 0.05 to 50 mole times, preferably 0.1 to 20 mole times.
- any known anionic catalyst or cationic catalyst may be used as the polymerization catalyst used in the polymerization reaction of the polyoxymethylene copolymer.
- Polymerization catalysts of trioxane include halogens such as chlorine, bromine and iodine; Alkyl or allylsulfonic acid,
- HC10 4 , HI0 4 , HC10 4 organic and inorganic acids such as CPh 3 C (I0 4 ), R 3 SiHS0 4, and the like; Metal halide compounds such as BF 3 , SbF 3 , SnCl 4 ( TiCl 4 , FeCl 3 ⁇ ZrCl 4 , MoCl 5 , SiF 4 ; BF 3.0 H 2 , BF 3.0 Et 2> BF 3.0 Bu 2 , BF 3 .
- Metal halides such as C3 ⁇ 4C00H, BF3.PF5.HF, BF 3 —10-hydroxyacetphenol, Ph 3 CSnCl 5 , Ph 3 CBF 4) Ph 3 CSbCl 6, and the like;
- Metal esters such as carboxylate compounds of copper, zinc, cadmium, iron, cobalt and nickel;
- Metal oxides such as P 2 O 5 + S0 2 , P 2 O 5 + phosphate esters, and the like;
- a catalyst in which an organometallic compound and a metal halide compound are combined in this case, Ph means phenyl group, Et means ethyl group, and Bu means butyl group).
- a coordination compound of boron trifluoride and more preferably BF 3.0 Et 2 and BF 3.0 Bu 2 can be used.
- the addition amount of such a polymerization catalyst is preferably in the range of 2 mole 2 to 6 mole 2 moles per mole of trioxane.
- the polymerization may be carried out in the form of bulk polymerization, suspension polymerization or solution polymerization, and the reaction temperature is in the range of 0 to 100 ° C., preferably in the range of 20 to 8 ( rc.) Meanwhile, the remaining catalyst is deactivated after the polymerization.
- the deactivator for the purpose is generally tertiary amines such as triethylamine, cyclic sulfur compounds such as thiophene, and phosphorus compounds such as triphenylphosphine, and these are Lewis base materials having unshared electron pairs.
- Complex salts are formed and can be suitably used as deactivators, and in the case of polymerization reaction of polyoxymethylene copolymers, alkyl-substituted phenols and ethers can be used as chain transfer agents.
- an alkyl ether such as dimethoxymethane can be used, etc.
- the polyoxymethylene resin of the present invention is in the form of a powder. The size
- a powdery polyoxymethylene resin the dispersion of the carbon nanotubes added to the polyoxymethylene resin composition can be uniformly obtained, and the desired electrical conductivity can be obtained due to the uniform dispersion of the carbon nanoleubs.
- the polyoxymethylene resin is not particularly limited, but it is preferable to use a melt index (MI) of 0.1 lOOg / 10 min.
- the carbon nanotubes applied in the present invention are not particularly limited, and single-walled carbon nanotubes, multi-walled carbon nanotubes, and the like may be used, providing conductivity, relatively low manufacturing costs, and easy handling. In view of the multi-walled carbon nanotubes are more preferable to use.
- the carbon nano-lube may be a commercially available one, and is not particularly limited, but may be a carbon nano-lube having a BET surface area of 150 to 300 mVg, a diameter of 10 to 40 nm, and a length of 1 to 25. Furthermore, such carbon nanotubes may be used having a purity of 93% or more.
- Such carbon nanotubes may include 1-6 parts by weight based on 100 parts by weight of polyoxymethylene resin.
- the carbon nanotube content is included in less than 1 part by weight, it is not possible to obtain a sufficient electrical conductivity to be obtained by the addition of carbon nanotubes, and when it exceeds 6 parts by weight, the thermal stability of the polyoxymethylene resin molded article is not good. Since there exists a problem that workability falls, it is preferable to add in the said range.
- the carbon nanotube-polyoxymethylene resin composition of the present invention includes a processing property modifier, and the processing property modifier preferably uses a polymer having a core-shell structure.
- the processing property modifier reduces the shear stress during compounding, lowers the amount of formaldehyde generated in the carbon nanotube-polyoxymethylene resin composition, prevents cracking of the plate during extrusion, and voids and tears that are surface defects during secondary processing. The occurrence of phenomenon can be suppressed.
- the polymer having the core-shell structure is composed of a core part made of rubbery polymer and a shell part made of glassy polymer.
- Polymers having such a core-shell structure can generally be obtained in a seed emulsion polymerization method by a continuous emulsion polymerization method in which the polymer of the previous stage is sequentially covered by the polymer of the subsequent stage.
- the shell portion is preferably in the range of 10 to 50% by weight of the core core shell polymer. If it is less than 10% by weight, the core-shell structured polymer may become too soft, and if it exceeds 50% by weight, the core-shell ' structured elastomer may become too rigid, thus processing There is a problem in that it does not sufficiently perform the role as a characteristic modifier, the shell portion preferably has a content in the above range.
- the rubbery polymer forming the core portion of the polymer having the core-shell structure is polymerized by using a conjugated diene, an alkyl group and an alkyl acrylate having 2 to 8 carbon atoms or a mixture thereof as a monomer to form a rubbery polymer. can do.
- conjugated dienes include butadiene, isoprene (2-methyl-buta-1,3-diene), chloroprene (2-chloro-1,3'butadiene) and the like.
- alkyl acrylate having 2 to 8 carbon atoms for the alkyl group include ethyl acrylate, propyl acrylate, butyl acrylate, cyclonuclear acrylate and the like.
- butyl acrylate is preferably used as the rubbery polymer.
- the glassy polymer forming the shell portion of the core-shell polymer preferably has an oxygen-containing polar group.
- the oxygen-containing polar group include a hydroxyl group (-OH), a group having an ether bond (-OR), an amide group (-C0NH), a nitro group (-N0 2 ), and the like, and a group having a hydroxyl group and an ether bond. It is preferable to use.
- glycidyl group can be used, for example.
- Such oxygen-containing polar groups are preferably present in two or more, more preferably 2 to 5 in the monomer.
- the glassy polymer is preferably a vinyl polymer having the oxygen-containing polar group.
- (meth) acrylate may be used, and the (meth) acrylate preferably has two or more oxygen-containing polar groups. More preferably, the oxygen-containing polar group may be a hydroxyl group or a glycidyl group, and may include all of them.
- Examples of the (meth) acrylate having a hydroxyl group as such an oxygen-containing polar group include hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, and the like, preferably hydroxyethyl (meth) acrylate. Available have.
- the (meth) acrylate having a glycidyl group as the oxygen-containing polar group includes glycidyl (meth) acrylate, preferably glycidyl methacrylate can be used.
- a (meth) acrylate which has an amide group and a nitro group an amino (meth) acrylate, a nitro (meth) acrylate, etc. are mentioned.
- vinyl monomers having an oxygen-containing polar group such as allyloxyethanol and allyl glycidyl ether can also be used as constituents of the vinyl copolymer having an oxygen-containing polar group.
- alkyl (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate
- vinyl polymerizable monomers such as vinyl cyanide and vinyl cyanide, such as vinyl vinylene and the aromatic vinyl of C2-C8, such as (alpha) -methylstyrene, or aromatic vinylidene, acrylonitrile, and methacrylonitrile, are mentioned, Especially Preferably, methyl methacrylate, styrene, acrylonitrile can be used.
- the processing property modifier may be used by mixing the ionomer in the polymer having the core-shell structure.
- an ionomer as the processing property modifier, further processing property improvement of a molded article can be obtained. It is preferable to use resin which has the structure in which the hydrogen of the carboxyl group contained in the copolymer which consists of (alpha)-olepin and methylacrylic acid or its derivative was substituted by the metal ion for the said ionomer.
- Such an ionomer can be obtained by copolymerizing ⁇ -olefin and methylacrylic acid to form a functional group-containing olefin, and then substituting a part of functional groups such as carboxyl groups contained in the copolymer obtained with metal ions.
- the ionomer be substituted with a 4-15% carboxyl group as a metal because it can fully exhibit its function as a processing characteristic modifier.
- the metal of the metal ion used for the substitution of the carboxyl group include Zn, Na, Mg, Li, and the like, and preferably Zn.
- the processing property modifier is preferably included in the range of 0.3 to 3 parts by weight based on 100 parts by weight of the polyoxymethylene resin.
- the content of the processing property modifier is included in less than 0.3 parts by weight, it is not possible to obtain the effect to be obtained by such processing property modifier.
- the effect of reducing the shear stress during compounding is insignificant, and the effect of reducing the formaldehyde content of the carbon nanotube-polyoxymethylwen resin composition is inadequate, and cracking occurs during extrusion, and voids or tears, which are surface defects during the secondary processing, are caused. Phenomenon may occur.
- the polyoxymethylene resin composition of the present invention is a component generally included in the polyoxymethylene resin composition, and may include a heat stabilizer, an antioxidant, a dispersant, and the like.
- antioxidant 2,2'-methylene-bis (4-methyl-6-t-butylphenol), 4,4'- methylene-bis (2,6-di-t-butylphenol), 1, 3,5-trimethyl-2,4,6-tris (3,5-di ⁇ -butyl-4-hydroxybenzyl) benzene, 2,5-di-t-butyl-4-hydroxybenzyl dimethylamine, stearyl -3,5-di eu eu t - butyl-4-hydroxybenzyl phosphonate, diethyl-3,5-di -t- butyl-4-hydroxybenzyl phosphonate, 2, 6, 7 Trioxa-1-phospho-bicyclo [2,2, 2] -octosyl 4-yl-methyl-3,5-diphenyl t -butyl-4-hydroxyhydrocinnamate, 3,5-di- t-butyl-4-hydroxythoxyphenyl-3, 5- Distearyl-thiotris (3
- the antioxidant may be added in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the polyoxymethylene copolymer. When the amount is less than 0.01 part by weight, the thermal stability improving effect is insignificant. The physical properties of the obtained molded article are lowered, and the molded article surface is not good.
- the heat stabilizer is guanamine, melamine, N-butylmelamine, N-phenylmelamine, ⁇ , ⁇ -diphenylmelamine, ⁇ , ⁇ -diallylmelamine, ⁇ , ⁇ 'triphenylmelamine, ⁇ , ⁇ ', ⁇ " Trimethyl melamine, benzoguanamine, 2,4-diamino-6-methyl-sym-triazine, 2,4-diamino- 6-butyl-sym-triazine, 2,4-diamino-6- Benzyloxy-sym-triazine, 2,4-diamino-6-butoxy-sym-triazine, 2, 4-polyamino-6-cyclonucleus -sym-triazine, 2,4-diamino-6 -Chloro-sym-triazine, 2,4-diamino ⁇ 6-mercapto-sym-triazine
- the said heat stabilizer in 0.005-1 weight part with respect to 100 weight part of polyoxymethylene resins.
- the addition amount is not 0.005 parts by weight
- the minimal effect of improving the thermal stability if, when the addition amount exceeds 1 part by weight of the obtained The physical properties of the molded article are lowered.
- at least one metal compound selected from the group consisting of hydroxides, inorganic acid salts, organic acid salts or alkoxides of alkali metals or alkaline earth metals may be added.
- the inorganic acid salts include carbonates, phosphates, silicates and borates, and the organic acid salts include lauryl acid salts, stearyl acid salts, oleyl acid salts, and behenyl acid salts.
- Alkoxides include alkoxides such as methoxide and ethoxide.
- the metal compound is preferably added in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the polyoxymethylene resin. If the addition amount is less than 0. 2 parts by weight, the effect of further improving thermal stability is insignificant. If the addition amount is more than 1 part by weight, the physical properties of the obtained molded article are deteriorated and gas generation is severe.
- a dispersing agent such as silicone oil may be further added to the carbon nanotube-polyoxymethylene resin composition of the present invention as needed.
- the mixture was melt kneaded, and the pellets were prepared by reacting the molten metal from the extruder die through a cooling bath.
- the obtained pellets were manufactured using a single screw extruder to produce molded articles having a plate size of 90ctnX50cm and 8,3ra.
- the extrusion conditions were extruded at an extrusion rate of 35 kPa / min, cylinder silver degree 185 ° C, pressure 200 psi.
- the material used in the present invention is as follows.
- Carbon Nanotube (CNT) Ctubel00 (Diameter: 10 ⁇ 40 ⁇ , Length: l ⁇ 25nm, CNT ⁇ CNT Co., Ltd.)
- STAPHYLOID IM-406 (meth) acrylic acid ether styrene copolymer, 55 wt% core, 45 wt% shell] (manufactured by Ganz Chemical Co., Ltd.) (hereinafter referred to as 'IM 406') .)
- Shear Stress The main motor current (shear rate) of the compounding machine during compounding of the composition was evaluated and the results are shown in Tables 1 and 2. As a result of the measurement, high shear stress results in a high current for the compounding machine, and low shear stress results in a low current for the compounding machine. The higher the shear stress, the lower the thermal stability of the POM, which can be evaluated by the VDA275 test to evaluate the thermal stability of the POM. Quality Evaluation of Injection Molded Products
- Tensile strength and elongation were measured according to the ISO 527 method. Higher values indicate better tensile strength and elongation, and lower values indicate poor tensile strength and elongation.
- Flexural strength was measured according to the ISO 178 method. Higher values indicate good flexural strength, and lower values mean poor flexural strength.
- Charpy laminar strength (Notched) was measured according to the ISO 179 method. If this value is high, Charpy impact strength is good, and if this value is low, Charpy impact strength is bad.
- the amount of formaldehyde generated in the molded product is filled with a certain amount of distilled water in a 1 liter sized polyethylene bottle in VDA 275 of Volkswagen, installed on the surface of the prescribed size, and kept tight by closing the lid.
- the formaldehyde component released by placing in an oven and maintaining a constant temperature (60 ° C, 3 hours) is dissolved in distilled water.
- the total amount of formaldehyde dissolved in distilled water is pretreated by acetyl acetone method and measured by ultraviolet spectrophotometer. Quality Evaluation of Extruded Products
- the surface resistivity of the extruded plate was subjected to secondary processing on a lathe, and then the surface resistivity was measured by the IEC 60093 method. If this value is high, it means insulation, and if this value is low, it means that it is excellent in electroconductivity.
- the surface of the extruded plate was subjected to secondary processing on a lathe, and the surface state was measured by a stereo microscope (magnification: 300 times). If the surface is clean without voids or tearing, it is judged to have excellent processing characteristics. It was judged that the processing characteristics were bad.
- Table 1 shows an example and Table 2 shows a comparative example.
- FA generation amount Formaldehyde generation amount measured by VDA275 method
- a resin composition containing a polymer having a core-shell structure as a processing property modifier Examples 1 to 3
- sheer stress It can be seen that the amount of formaldehyde gas generated is significantly lower due to the decrease in the amount of. Furthermore, by suppressing the occurrence of voids or tearing on the surface during secondary processing,
- FA generation amount Formaldehyde generation amount measured by VDA275 method
- a resin composition containing no polymer and an ionomer having a core-shell structure which is a processing property modifier of the present invention (Comparative Examples 1 to 1). 7) and a resin composition containing only an ionomer without a polymer having a core-shell structure (Comparative Example 8-10) have high mechanical properties, but have high shear stress during compounding, and FA by VDA 275.
- the amount of generation is very high, it can be seen that it is impossible to commercialize the extruded product due to the occurrence of tearing or voids on the surface during the secondary processing.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280078023.3A CN105102535B (zh) | 2012-12-28 | 2012-12-28 | 具有极佳电导性以及改善的加工性和热稳定性的碳纳米管‑聚甲醛树脂组合物以及由该组合物形成的模塑制品 |
EP12890927.2A EP2940074B1 (en) | 2012-12-28 | 2012-12-28 | Carbon nanotube-polyoxymethylene resin composition having excellent electrical conductivity and improved processability properties and heat stability, and molded article thereof |
PCT/KR2012/011757 WO2014104447A1 (ko) | 2012-12-28 | 2012-12-28 | 전기전도성이 우수하면서 가공특성 및 열안정성이 개선된 탄소나노튜브-폴리옥시메틸렌 수지 조성물 및 그의 성형품 |
US14/651,019 US20150318072A1 (en) | 2012-12-28 | 2012-12-28 | Carbon nanotube-polyoxymethylene resin composition having excellent electrical conductivity and improved processability and heat stability, and molded article formed therefrom |
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PCT/KR2012/011757 WO2014104447A1 (ko) | 2012-12-28 | 2012-12-28 | 전기전도성이 우수하면서 가공특성 및 열안정성이 개선된 탄소나노튜브-폴리옥시메틸렌 수지 조성물 및 그의 성형품 |
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WO2014104447A1 true WO2014104447A1 (ko) | 2014-07-03 |
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PCT/KR2012/011757 WO2014104447A1 (ko) | 2012-12-28 | 2012-12-28 | 전기전도성이 우수하면서 가공특성 및 열안정성이 개선된 탄소나노튜브-폴리옥시메틸렌 수지 조성물 및 그의 성형품 |
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US (1) | US20150318072A1 (ko) |
EP (1) | EP2940074B1 (ko) |
CN (1) | CN105102535B (ko) |
WO (1) | WO2014104447A1 (ko) |
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CN111117147A (zh) * | 2020-01-15 | 2020-05-08 | 东莞市耐格美塑胶制品有限公司 | 一种永久防静电表面哑光增强pom板及其制备方法 |
WO2022137998A1 (ja) * | 2020-12-23 | 2022-06-30 | ポリプラスチックス株式会社 | ポリアセタール樹脂組成物及び燃料接触体 |
CN115073878B (zh) * | 2022-08-15 | 2022-11-01 | 广东盟信塑胶实业有限公司 | 一种碳纳米管接枝阻燃抗静电聚甲醛复合材料及其制备方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5290858A (en) * | 1989-03-31 | 1994-03-01 | Takeda Chemical Industries, Ltd. | Core-shell polymer, production and use thereof |
JP2000026705A (ja) * | 1998-05-07 | 2000-01-25 | Polyplastics Co | ポリアセタ―ル樹脂組成物 |
WO2005054365A1 (en) * | 2003-11-26 | 2005-06-16 | E.I. Dupont De Nemours And Company | A process for making a core-shell toughener and toughening polyoxymethylene resins |
KR20070105995A (ko) * | 2005-01-14 | 2007-10-31 | 바스프 악티엔게젤샤프트 | 전도성 폴리옥시메틸렌 조성물 |
JP2008081530A (ja) * | 2006-09-26 | 2008-04-10 | Polyplastics Co | ポリアセタール樹脂組成物 |
KR20110129659A (ko) * | 2010-05-26 | 2011-12-02 | 한국기술교육대학교 산학협력단 | 고분자-탄소나노튜브 나노복합수지 조성물 및 이의 제조 방법 |
KR20120057976A (ko) * | 2010-11-29 | 2012-06-07 | 현대제철 주식회사 | 고열전도성 수지 복합체, 이의 제조방법 및 이를 이용한 성형품 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW230215B (ko) * | 1992-03-16 | 1994-09-11 | Polyplastics Kk | |
CN1176142C (zh) * | 2002-03-14 | 2004-11-17 | 四川大学 | 聚合物/碳纳米管复合粉体及其固相剪切分散的制备方法 |
WO2007032081A1 (ja) * | 2005-09-16 | 2007-03-22 | Asahi Kasei Chemicals Corporation | マスターバッチおよびそれを配合した組成物 |
JP2010144112A (ja) * | 2008-12-22 | 2010-07-01 | Polyplastics Co | 燃料用部品 |
US8299159B2 (en) * | 2009-08-17 | 2012-10-30 | Laird Technologies, Inc. | Highly thermally-conductive moldable thermoplastic composites and compositions |
JP2012140482A (ja) * | 2010-12-28 | 2012-07-26 | Hodogaya Chem Co Ltd | ポリアセタール樹脂/カーボンナノチューブ導電性樹脂複合材料 |
CN102675818B (zh) * | 2012-05-24 | 2015-01-28 | 兖矿鲁南化肥厂 | 一种增强增韧聚甲醛及其制备方法 |
-
2012
- 2012-12-28 CN CN201280078023.3A patent/CN105102535B/zh active Active
- 2012-12-28 US US14/651,019 patent/US20150318072A1/en not_active Abandoned
- 2012-12-28 WO PCT/KR2012/011757 patent/WO2014104447A1/ko active Application Filing
- 2012-12-28 EP EP12890927.2A patent/EP2940074B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5290858A (en) * | 1989-03-31 | 1994-03-01 | Takeda Chemical Industries, Ltd. | Core-shell polymer, production and use thereof |
JP2000026705A (ja) * | 1998-05-07 | 2000-01-25 | Polyplastics Co | ポリアセタ―ル樹脂組成物 |
WO2005054365A1 (en) * | 2003-11-26 | 2005-06-16 | E.I. Dupont De Nemours And Company | A process for making a core-shell toughener and toughening polyoxymethylene resins |
KR20070105995A (ko) * | 2005-01-14 | 2007-10-31 | 바스프 악티엔게젤샤프트 | 전도성 폴리옥시메틸렌 조성물 |
JP2008081530A (ja) * | 2006-09-26 | 2008-04-10 | Polyplastics Co | ポリアセタール樹脂組成物 |
KR20110129659A (ko) * | 2010-05-26 | 2011-12-02 | 한국기술교육대학교 산학협력단 | 고분자-탄소나노튜브 나노복합수지 조성물 및 이의 제조 방법 |
KR20120057976A (ko) * | 2010-11-29 | 2012-06-07 | 현대제철 주식회사 | 고열전도성 수지 복합체, 이의 제조방법 및 이를 이용한 성형품 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2940074A4 * |
Also Published As
Publication number | Publication date |
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CN105102535A (zh) | 2015-11-25 |
EP2940074B1 (en) | 2017-08-02 |
EP2940074A1 (en) | 2015-11-04 |
EP2940074A4 (en) | 2016-08-10 |
US20150318072A1 (en) | 2015-11-05 |
CN105102535B (zh) | 2017-09-08 |
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