WO2016002682A1 - ポリアミド樹脂組成物及びそれからなる成形品 - Google Patents
ポリアミド樹脂組成物及びそれからなる成形品 Download PDFInfo
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
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- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
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- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/12—Polyester-amides
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- C09K21/06—Organic materials
- C09K21/12—Organic materials containing phosphorus
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/64—Heat extraction or cooling elements
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
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- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/40—Polyamides containing oxygen in the form of ether groups
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- C08L2203/00—Applications
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- 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
Definitions
- the present invention relates to a polyamide resin composition and a molded product comprising the same, and more particularly to a molded product that is a laminate, an electronic component, a heat dissipation component, or an automobile component.
- Polyamide resins represented by polyamide 6 and polyamide 66 are excellent in heat resistance and moldability, and are therefore used as molding materials for electrical and electronic parts. In these fields, high performance, miniaturization, and weight reduction are actively performed, and a heat countermeasure that effectively dissipates generated heat to the outside is an extremely important issue. Conventionally, as a method of improving heat dissipation, a method of blending a thermally conductive filler into a polyamide resin composition is known (Patent Documents 1 and 2).
- thermally conductive filler In order to further increase the thermal conductivity by adding the thermally conductive filler to the polyamide resin composition, it is necessary to add a large amount of the thermally conductive filler to the polyamide resin composition. However, when a large amount of the heat conductive filler is added, the melt viscosity becomes high and the moldability is impaired, and mechanical properties such as impact resistance tend to be deteriorated.
- An object of the present invention is to provide a polyamide resin composition having not only excellent mechanical properties but also good moldability and excellent thermal conductivity, and a molded product comprising the same.
- the inventors of the present invention surprisingly combined glass fiber and polyamide elastomer that are blended for improving mechanical properties into a polyamide resin composition.
- the present inventors have found that the thermal conductivity of the polyamide resin composition can be improved while maintaining good moldability as well as the improvement of mechanical properties, and the present invention has been completed.
- the gist of the present invention is as follows.
- the present invention 1 includes (A) polyamide resin, (B) glass fiber, (C) thermally conductive filler, and (D) polyamide elastomer, and is the sum of (A), (B), (C) and (D).
- the present invention relates to a polyamide resin composition in which (B) is 9 to 35 parts by mass with respect to 100 parts by mass.
- the present invention 2 relates to a polyamide resin composition in which (D) is 2 to 12 parts by mass with respect to 100 parts by mass in total of (A), (B), (C) and (D).
- the present invention 3 is the polyamide resin of the present invention 1 or 2, wherein (C) is 20 to 75 parts by mass with respect to a total of 100 parts by mass of (A), (B), (C) and (D) Relates to the composition.
- the present invention 4 relates to the polyamide resin composition according to any one of the present inventions 1 to 3, wherein (B) is at least one selected from glass fibers having an average fiber diameter of 6 to 25 ⁇ m.
- the present invention 5 relates to the polyamide resin composition according to any one of the present inventions 1 to 4, wherein the (A) polyamide resin is at least one selected from the group consisting of polyamide 6 and polyamide 12.
- the present invention 6 is any one of the present inventions 1 to 5, wherein (C) is at least one selected from the group consisting of graphite, magnesium hydroxide, magnesium oxide, aluminum nitride, boron nitride, silicon nitride, and talc.
- the present invention relates to a polyamide resin composition.
- the present invention 7 relates to the polyamide resin composition according to any one of the present inventions 1 to 6, wherein (D) is a polyetheramide elastomer.
- the present invention 8 further relates to the polyamide resin composition according to any one of the present inventions 1 to 7, further comprising (E) a polyhydric alcohol.
- the present invention 9 relates to the polyamide resin composition of the present invention 8, wherein (E) is pentaerythritol.
- the present invention 10 relates to the polyamide resin composition according to any one of the present inventions 1 to 7, comprising only (A), (B), (C) and (D).
- the present invention 11 further relates to the polyamide resin composition of the present invention 10 comprising (E) only a polyhydric alcohol.
- the present invention 12 relates to the polyamide resin composition of the present invention 11, wherein (E) is pentaerythritol.
- the present invention 13 further relates to the polyamide resin composition according to any one of the present invention 10 to 12, further comprising only an additive as an optional component.
- the additive as an optional component is a heat stabilizer, an ultraviolet absorber, a light stabilizer, an antioxidant, an antistatic agent, a lubricant, an antiblocking agent, an antifogging agent, a crystal nucleating agent, and a release agent.
- the present invention relates to the polyamide resin composition of the present invention 13, which is at least one selected from the group consisting of a plasticizer, a crosslinking agent, a foaming agent and a colorant.
- the present invention 15 relates to a molded article comprising the polyamide resin composition of any one of the present inventions 1 to 14.
- the present invention 16 relates to the molded product of the present invention 15, which is a laminate, an electronic component, a heat dissipation component, or an automobile component.
- the present invention provides a polyamide resin composition having not only excellent mechanical properties but also good moldability and excellent thermal conductivity, and a molded product comprising the same.
- the polyamide resin composition of the present invention includes (A) a polyamide resin, (B) glass fiber, (C) a thermally conductive filler, and (D) a polyamide elastomer.
- the (A) polyamide resin is not particularly limited as long as it is a resin having an amide bond (—CONH—) in the main chain.
- (A) Polyamide resin is polymerized or copolymerized by a known method such as melt polymerization, solution polymerization, solid phase polymerization using lactam, aminocarboxylic acid, diamine and dicarboxylic acid (nylon salt) or diamine and oxalic acid diester as raw materials. Can be obtained.
- lactam examples include ⁇ -caprolactam, ⁇ -enantolactam, ⁇ -undecalactam, ⁇ -laurolactam, ⁇ -pyrrolidone, ⁇ -piperidone and the like, and ⁇ -caprolactam and ⁇ -laurolactam are preferable.
- aminocarboxylic acids examples include aliphatic groups such as 6-aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid, 10-aminocapric acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid.
- ⁇ -aminocarboxylic acid is exemplified, and 6-aminocaproic acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid are preferable.
- diamines examples include ethylene diamine, trimethylene diamine, tetramethylene diamine, pentamethylene diamine, hexamethylene diamine, peptamethylene diamine, octamethylene diamine, nonamethylene diamine, decamethylene diamine, undecamethylene diamine, dodecamethylene diamine, trideca diamine.
- Dicarboxylic acids include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid, tetradecanedioic acid, pentadecane Aliphatic dicarboxylic acids such as dionic acid, hexadecanedioic acid, octadecanedioic acid and eicosandioic acid; 1,3- / 1,4-cyclohexanedicarboxylic acid, dicyclohexanemethane-4,4′-dicarboxylic acid, norbornane dicarboxylic acid Alicyclic dicarboxylic acids such as isophthalic acid, terephthalic acid, aromatic dicarboxylic acids such as 1,4- / 1,8- / 2,6-
- Oxalic acid diesters include oxalic acid diesters of aliphatic alcohols such as dimethyl oxalate, diethyl oxalate, di-n- (or i-) propyl oxalate, di-n- (or i-, or t-) butyl oxalate.
- Oxalic acid diesters of alicyclic alcohols such as dicyclohexyl oxalate and oxalic acid diesters of aromatic alcohols such as diphenyl oxalate, such as di-n-butyl oxalate, di-butyl oxalate, and dioxalate t-Butyl is more preferred, and di-n-butyl oxalate is more preferred.
- a polyamide resin that is a polymer of lactam, aminocarboxylic acid, diamine and dicarboxylic acid (nylon salt) or diamine and oxalic acid diester, or a polyamide resin that is a copolymer thereof may be used as the polyamide resin. It can.
- a polyamide resin may be individual or may use 2 or more types together.
- polystyrene resin examples include polycaprolactam (polyamide 6), polyundecane lactam (polyamide 11), polydodecane lactam (polyamide 12), polyethylene adipamide (polyamide 26), polytetramethylene adipamide (polyamide 46), Polyhexamethylene adipamide (Polyamide 66), Polyhexamethylene azelamide (Polyamide 69), Polyhexamethylene sebamide (Polyamide 610), Polyhexamethylene undecamide (Polyamide 611), Polyhexamethylene dodecamide (Polyamide) 612), polyhexamethylene terephthalamide (polyamide 6T), polyhexamethylene isophthalamide (polyamide 6I), polyhexamethylene hexahydroterephthalamide (polyamide 6T (H)), polynona Methylene adipamide (Polyamide 96), Polynonamethylene azelamide (Polyamide 99), Polynonamethylene sebamide
- copolymer examples include caprolactam / hexamethylene diaminoadipic acid copolymer (polyamide 6/66), caprolactam / hexamethylene diamino azelaic acid copolymer (polyamide 6/69), caprolactam / hexamethylene diamino sebacic acid copolymer, and the like.
- the polyamide resin is preferably a lactam polymer or a polymer obtained by polycondensation of a diamine and a dicarboxylic acid (nylon salt), and the lactam polymer is preferably polyamide 6, polyamide 11, or polyamide 12, and diamine and dicarboxylic acid.
- polyamide 66, polyamide 610, polyamide 612, polyamide 1010, and polyamide 1012 are preferable.
- polyamide resin is particularly preferably polyamide 6 or polyamide 12 from the viewpoint of molding.
- the polyamide resin has a relative viscosity of 1.0 to 6.0 measured in 96 mass% sulfuric acid under the conditions of a polyamide concentration of 1 mass% and a temperature of 25 ° C. according to JIS K-6920. Preferably there is. If it is this range, the viscosity at the time of fusion
- the relative viscosity is preferably 1.5 to 5.0, more preferably 1.7 to 4.5.
- Polyamide resins may be used alone or in combination of two or more.
- glass fiber is not specifically limited, What is converged with the sizing agent from the point which improves the compatibility of glass fiber and a polyamide resin is preferable. From the viewpoint of compatibility, the sizing agent preferably contains a urethane type or an acrylic type, and these may be used in combination.
- (B) Glass fibers having an average fiber diameter of 6 to 25 ⁇ m can be used. From the viewpoint of dimensional stability and mechanical properties of the molded article made of the composition, the average fiber diameter is preferably 6 to 23 ⁇ m, for example, an average fiber diameter of 10 to 23 ⁇ m can be used.
- the glass fibers may be used alone or in combination of two or more. Two or more types of glass fibers having different average fiber diameters may be used. Surprisingly, it has been found that thermal conductivity is improved by combining glass fibers having a specific average fiber diameter.
- the glass fiber combination include (B1) a glass fiber having an average fiber diameter of 6 to 11 ⁇ m and (B2) a glass fiber having an average fiber diameter of 13 to 25 ⁇ m.
- the ratio of (B1) glass fiber having an average fiber diameter of 6 to 11 ⁇ m and (B2) glass fiber having an average fiber diameter of 13 to 25 ⁇ m ((B1) :( B2)) is 1: 9 to 9: 1. 5: 5 is preferred.
- (B1) is preferably a glass fiber having an average fiber diameter of 10 to 11 ⁇ m
- (B2) is preferably a glass fiber having an average fiber diameter of 13 to 23 ⁇ m.
- the fiber length of the glass fiber is not particularly limited, and can be 10 ⁇ m to 10 mm. From the viewpoint of dimensional stability of the molded product, 50 ⁇ m to 5 mm is more preferable.
- the glass fiber may be surface-treated.
- the surface treatment agent include silane compounds, titanium compounds, chromium compounds, and the like, and silane compounds and titanium compounds are preferable from the viewpoint of improving compatibility with polyamide resins.
- the surface treatment agents may be used alone or in combination of two or more.
- an aminosilane coupling agent excellent in adhesion to the sizing agent is preferable.
- Titanium compounds include isopropyl triisostearoyl titanate, isopropyl tri (N-aminoethyl) titanate, isopropyl tris (dioctyl pyrophosphate) titanate, tetraisopropyl bis (dioctyl phosphite) titanate, tetraisopropyl titanate, tetrabutyl titanate, tetra Octyl bis (ditridecyl phosphite) titanate, isopropyl trioctanoyl titanate, isopropyl tridodecyl benzene sulfonyl titanate, isopropyl tri (dioctyl phosphate) titanate, bis (dioctyl pyrophosphate) ethylene titanate, isopropyl dimethacrylisostearoyl titanate, tetra (2 , 2-Diallyloxymethyl-1
- N- ⁇ - (aminoethyl) ⁇ -aminopropyltrimethoxysilane N- ⁇ - (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane and ⁇ -aminopropyltriethoxysilane are preferable.
- a heat conductive filler is not specifically limited, A metal, an alloy, a carbonaceous material, a hydroxide, an oxide, nitride etc. are mentioned.
- the metal powder include aluminum powder and copper powder.
- the alloy include a low melting point alloy.
- the carbon-based material include carbon and graphite.
- the hydroxide include aluminum hydroxide.
- Magnesium oxide, etc., oxides include aluminum oxide, magnesium oxide, beryllium oxide, titanium oxide, etc.
- nitrides include aluminum nitride, boron nitride, silicon nitride, etc.
- graphite, magnesium hydroxide, magnesium oxide, aluminum nitride, boron nitride, silicon nitride, and talc are preferable.
- graphite or the like is preferable from the viewpoint of thermal conductivity and conductivity, and when used as an insulating member, magnesium oxide, boron nitride, talc, or the like is preferable.
- the shape of the heat conductive filler is not particularly limited, and examples thereof include a spherical shape, a needle shape, a fiber shape, a scale shape, a flat plate shape, an indefinite shape, and the like. A flat plate shape is preferred.
- the average particle size of the heat conductive filler is not particularly limited, and can be 0.1 to 200 ⁇ m. From the viewpoint of impact resistance, the average particle size is preferably 1 to 100 ⁇ m, more preferably 5 to 80 ⁇ m.
- the average particle diameter is a volume-based median diameter measured by a laser diffraction / scattering method.
- the thermally conductive filler may be surface-treated, and examples of the surface treatment agent include silane compounds and titanium compounds. Silane compounds and titanium compounds exemplified as glass fiber surface treatment agents can be used.
- Thermally conductive fillers may be used alone or in combination of two or more.
- the polyamide resin composition of the present invention can contain (D) a polyamide elastomer.
- the blending of the polyamide elastomer can further improve the mechanical characteristics without impairing the good thermal conductivity.
- the polyamide elastomer is preferably a polyamide elastomer having a polyamide unit as a hard segment and a polyether unit as a soft segment.
- a polyether ester amide elastomer in which a hard segment and a soft segment are bonded by an ester bond, or a hard segment examples include polyether amide elastomers in which soft segments are bonded by amide bonds.
- the hard segment can be derived from a polyamide having carboxyl groups at both terminal groups, and is at least one selected from the group consisting of a polyamide-forming unit, an aliphatic dicarboxylic acid, an alicyclic dicarboxylic acid, and an aromatic dicarboxylic acid.
- a segment containing a dicarboxylic acid is at least one selected from the group consisting of a polyamide-forming unit, an aliphatic dicarboxylic acid, an alicyclic dicarboxylic acid, and an aromatic dicarboxylic acid.
- the polyamide-forming unit in the hard segment consists of lactam, aminocarboxylic acid and / or diamine and dicarboxylic acid (nylon salt), for example, selected from the group consisting of lactam, aminocarboxylic acid and diamine and dicarboxylic acid (nylon salt) Examples thereof include units obtained by reacting one kind or two or more kinds.
- lactam examples include aliphatic lactams having 5 to 20 carbon atoms such as ⁇ -caprolactam, ⁇ -enantolactam, ⁇ -undecalactam, ⁇ -lauryllactam, 2-pyrrolidone, and the like.
- aminocarboxylic acids include aliphatic groups having 5 to 20 carbon atoms such as 6-aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 10-aminocapric acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid. and ⁇ -aminocarboxylic acid.
- diamines examples include ethylene diamine, trimethylene diamine, tetramethylene diamine, hexamethylene diamine, heptamethylene diamine, octamethylene diamine, nonamethylene diamine, decamethylene diamine, undecamethylene diamine, dodecamethylene diamine, 2,2,4-trimethyl.
- diamine compounds such as aliphatic diamines having 2 to 20 carbon atoms such as hexane-1,6-diamine, 2,4,4-trimethylhexane-1,6-diamine, and 3-methylpentane-1,5-diamine. It is done.
- ⁇ -lauryl lactam, 11-aminoundecanoic acid or 12-aminododecanoic acid is preferable from the viewpoint of dimensional stability due to low water absorption, chemical resistance, and mechanical properties.
- the hard segment dicarboxylic acid can be used as a molecular weight modifier.
- the dicarboxylic acid include dicarboxylic acid compounds such as oxalic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and dodecanedioic acid, and other aliphatic dicarboxylic acids having 2 to 20 carbon atoms. Is mentioned.
- a polyamide having carboxyl groups at both ends can be obtained by ring-opening polymerization or polycondensation of the polyamide-forming unit in the presence of a dicarboxylic acid by a conventional method.
- the number average molecular weight of the hard segment is preferably 300 to 15000, and more preferably 300 to 6000 from the viewpoint of flexibility and moldability.
- the soft segment is preferably a polyether, and examples thereof include polyethylene glycol, polypropylene glycol, polytetramethylene ether glycol, and ABA type triblock polyether represented by the following formula (1). These may be used alone or in combination of two or more. Moreover, polyether diamine etc. which are obtained by making animonia etc. react with the terminal of polyether can be used.
- the number average molecular weight of the soft segment is preferably 200 to 6000, and more preferably 650 to 2000.
- x and z are each independently preferably an integer of 1 to 18, more preferably an integer of 1 to 16, still more preferably an integer of 1 to 14, particularly preferably an integer of 1 to 12.
- Y is preferably an integer of 5 to 45, more preferably an integer of 6 to 40, still more preferably an integer of 7 to 35, and particularly preferably an integer of 8 to 30.
- the combination of the hard segment and the soft segment the combination of the hard segment and the soft segment mentioned above can be given.
- lauryl lactam ring-opening polycondensate / polyethylene glycol combination lauryl lactam ring-opening polycondensate / polypropylene glycol combination, lauryl lactam ring-opening polycondensate / polytetramethylene ether glycol combination, lauryl lactam
- the ring-opening polycondensate / ABA type triblock polyether combination is preferred, and the lauryl lactam ring-opening polycondensate / ABA type triblock polyether combination is particularly preferred.
- the hard segment / soft segment (weight ratio) is more preferably 90/10 to 30/70, and particularly preferably 80/20 to 40/60.
- Examples of commercially available polyamide elastomers as described above include Daicel Evonik: Daiamide, ARKEMA: Pebax, Emschemy Japan: Grillamide, Riken Technos: Hyper Alloy Actima, Mitsubishi Engineering Plastics: Novamit, Ube Industries, Ltd .: UBESTA XPA series, etc. are mentioned.
- the polyamide elastomer may be used alone or in combination of two or more.
- the polyamide resin composition of the present invention contains (A) a polyamide resin, (B) glass fiber, (C) a thermally conductive filler, and (D) a polyamide elastomer, but not only excellent mechanical properties but also good moldability.
- (B) glass fiber is 9 to 35 parts by mass with respect to a total of 100 parts by mass of (A), (B), (C) and (D).
- blending (B) into the composition not only improves the mechanical properties, but also unexpectedly improves the thermal conductivity while maintaining good moldability. It was. Since glass fiber usually has lower thermal conductivity than polyamide resin, it can be said that such an effect of improving thermal conductivity cannot be predicted.
- the amount of (B) is preferably 9 to 33 parts by mass, and more preferably 15 to 20 parts by mass.
- the polyamide resin composition of the present invention is formulated by combining (B) glass fiber and (D) polyamide elastomer, and (D) is the sum of (A), (B), (C) and (D).
- the amount can be 2 to 12 parts by mass with respect to 100 parts by mass, preferably 3 to 11 parts by mass, and more preferably 4 to 10 parts by mass.
- (C) the thermally conductive filler is 20 to 75 parts by mass with respect to a total of 100 parts by mass of (A), (B) and (C) and (D). 25 to 60 parts by mass is preferable, and 27 to 50 parts by mass is more preferable.
- the polyamide resin composition of the present invention can contain (E) a polyhydric alcohol.
- (E) Formability can be improved by blending polyhydric alcohol.
- the polyhydric alcohol is not particularly limited, but preferably has a melting point of 150 to 280 ° C.
- the melting point is the temperature of the endothermic peak (melting point) as measured by differential scanning calorimetry (DSC).
- Examples of the polyhydric alcohol having a melting point of 150 to 280 ° C. include pentaerythritol, dipentaerythritol, trimethylolethane and the like. From the viewpoint of moldability, pentaerythritol and dipentaerythritol are preferable.
- Polyhydric alcohols may be used alone or in combination of two or more.
- the compounding quantity of polyhydric alcohol can be 4 mass parts or less with respect to a total of 100 mass parts of (A), (B), (C), and (D), and from the point of a moldability. 0.1 to 3 parts by mass is preferable, and 0.5 to 1 part by mass is more preferable.
- additives can be blended within a range that does not impair the effects of the present invention.
- additives include heat stabilizers, ultraviolet absorbers, light stabilizers, antioxidants, antistatic agents, lubricants, antiblocking agents, antifogging agents, crystal nucleating agents, mold release agents, plasticizers, and crosslinking agents.
- Foaming agents, colorants (pigments, dyes, etc.) can be added.
- Elastomers other than polyamide elastomers can also be used.
- the polyamide resin is preferably 10 to 75% by mass, more preferably 20 to 70% by mass for the development of the properties as a polyamide resin. Preferably, it is 25 to 50% by mass.
- the polyamide resin composition of the present invention can be prepared by melting and kneading each component.
- the method of melt kneading is not particularly limited, and can be performed using a kneader such as a single screw extruder, a twin screw extruder, a kneader, or a Banbury mixer.
- the polyamide resin composition of the present invention can be formed into a molded product by using a molding method such as injection, extrusion, or pressing.
- the molded article made of the polyamide resin composition of the present invention can be used for applications of conventional molded articles of polyamide resin compositions, and as laminates, sheets, films, etc., automobile members, computers and related equipment, optical equipment It can be used for a wide range of applications such as parts, electrical / electronic equipment, information / communication equipment, precision equipment, civil engineering / building supplies, medical supplies, household goods, etc., and is particularly useful for applications such as electronic parts, heat dissipation parts, automobile parts, etc. .
- C Thermally conductive filler
- C-1 graphite, scaly, average particle size 33 ⁇ m
- C-2 Magnesium oxide, spherical, average particle size 37 ⁇ m
- C-3 Boron nitride, plate-like, average particle size 38 ⁇ m
- D Polyamide Elastomer
- D-1 Polyetheramide Elastomer (UBESTA XPA P9040X1, manufactured by Ube Industries, Ltd., powder obtained by pulverizing pellets and passing through a 10 mesh screen mesh)
- D ′ Other rubber component (D′-1): Maleic acid-modified ethylene-butene resin (Tafmer MH5020 manufactured by Mitsui Chemicals) (D'-2): Ionomer (High Milan 1855 made by Mitsui DuPont Polychemical) (D'-3): Hydrogenated styrene thermoplastic elastomer (Tuftec M1913 manufactured by Asahi Kasei Chemicals)
- E Polyhydric alcohol (E-1): Pentaerythritol (manufactured by Nippon Synthetic Chemical Industry Co., Ltd., melting point 260 ° C., specific gravity 1.4)
- Each component was put into a cylindrical mixer and mixed with the composition shown in Table 1 (indicated by mass).
- the mixture is introduced into TEX44 which is a kneader manufactured by Nippon Steel Co., Ltd., melt kneaded at a set temperature of 280 ° C., screw rotation speed of 200 rpm, discharge amount of 30 kg / hr, extruded into a string shape, cooled in a water tank, and then used with a pelletizer.
- TEX44 is a kneader manufactured by Nippon Steel Co., Ltd.
- Kneadability The kneadability in the pellet production in Examples and Comparative Examples was determined as follows. X: Strand from the die to the pelletizer cannot be pelletized without breaking. ⁇ : The pellet from the die to the pelletizer can be pelletized without breaking. (2) Fluidity Using the pellets of the example and comparative example, the cylinder temperature is 280 ° C. The flow length was measured under conditions of a mold temperature of 80 ° C. and an injection pressure of 100 MPa.
- Example 1 and Comparative Examples 2 and 3 and the comparison between Example 2 and Comparative Examples 2 and 4, these effects were obtained by adding a specific amount of glass fiber to the polyamide resin composition. It turns out that it mixes with. Such an effect was not obtained in Comparative Examples 5 to 7 using a rubber component other than the polyamide elastomer.
- Examples 1 to 10 with Comparative Examples 1 to 4, 8, and 9, a polyamide resin composition lacking at least one of polyamide resin, glass fiber, thermally conductive filler and polyamide elastomer was used. In this case, it can be seen that the desired effect of the present invention cannot be obtained.
- a polyamide resin composition having not only excellent mechanical properties but also good moldability and excellent thermal conductivity, and a molded product comprising the same.
- Molded articles made of the polyamide resin composition of the present invention can be used for conventional polyamide resin composition molded articles, such as automobiles, computers and related equipment, optical equipment members as laminates, sheets, films, etc. It can be used for a wide range of applications such as electrical / electronic equipment, information / communication equipment, precision equipment, civil engineering / building supplies, medical supplies, and household goods, and is particularly useful for applications such as electronic parts, heat dissipation parts, and automobile parts.
Abstract
Description
本発明1は、(A)ポリアミド樹脂、(B)ガラス繊維、(C)熱伝導性フィラー及び(D)ポリアミドエラストマーを含み、(A)、(B)、(C)及び(D)の合計100質量部に対して、(B)が、9~35質量部である、ポリアミド樹脂組成物に関する。
本発明2は、(A)、(B)、(C)及び(D)の合計100質量部に対して、(D)が、2~12質量部である、ポリアミド樹脂組成物に関する。
本発明3は、(A)、(B)、(C)及び(D)の合計100質量部に対して、(C)が、20~75質量部である、本発明1又は2のポリアミド樹脂組成物に関する。
本発明4は、(B)が、平均繊維径6~25μmのガラス繊維から選ばれる少なくとも1種である、本発明1~3のいずれかのポリアミド樹脂組成物に関する。
本発明5は、(A)ポリアミド樹脂が、ポリアミド6及びポリアミド12からなる群より選ばれる少なくとも1種である、本発明1~4のいずれかのポリアミド樹脂組成物に関する。
本発明6は、(C)が、黒鉛、水酸化マグネシウム、酸化マグネシウム、窒化アルミニウム、窒化ホウ素、窒化ケイ素及びタルクからなる群より選ばれる少なくとも1種である、本発明1~5のいずれかのポリアミド樹脂組成物に関する。
本発明7は、(D)が、ポリエーテルアミドエラストマーである、本発明1~6のいずれかのポリアミド樹脂組成物に関する。
本発明8は、さらに、(E)多価アルコールを含む、本発明1~7のいずれかのポリアミド樹脂組成物に関する。
本発明9は、(E)が、ペンタエリスリトールである、本発明8のポリアミド樹脂組成物に関する。
本発明10は、(A)、(B)、(C)及び(D)のみからなる、本発明1~7のいずれかのポリアミド樹脂組成物に関する。
本発明11は、さらに、(E)多価アルコールのみを含む、本発明10のポリアミド樹脂組成物に関する。
本発明12は、(E)が、ペンタエリスリトールである、本発明11のポリアミド樹脂組成物に関する。
本発明13、さらに、任意成分としての添加剤のみを含む、本発明10~12のいずれかのポリアミド樹脂組成物に関する。
本発明14は、任意成分としての添加剤が、熱安定剤、紫外線吸収剤、光安定剤、酸化防止剤、帯電防止剤、滑剤、ブロッキング防止剤、防曇剤、結晶核剤、離型剤、可塑剤、架橋剤、発泡剤及び着色剤からなる群から選ばれる少なくとも1種である、本発明13のポリアミド樹脂組成物に関する。
本発明15は、本発明1~14のいずれかのポリアミド樹脂組成物からなる成形品に関する。
本発明16は、積層体、電子部品、放熱部品又は自動車部品である、本発明15の成形品に関する。
(A)ポリアミド樹脂は、主鎖中にアミド結合(-CONH-)を有する樹脂であれば、特に限定されない。(A)ポリアミド樹脂は、ラクタム、アミノカルボン酸、ジアミンとジカルボン酸(ナイロン塩)又はジアミンとシュウ酸ジエステルを原料として、溶融重合、溶液重合、固相重合等の公知の方法で重合又は共重合することにより得ることができる。
(B)ガラス繊維は、特に限定されないが、ガラス繊維とポリアミド樹脂との相溶性を向上させる点から、収束剤で収束されているものが好ましい。収束剤には、相溶性の点から、ウレタン系又はアクリル系が含まれていることが好ましく、これらを併用してもよい。
(C)熱伝導性フィラーは、特に限定されず、金属、合金、炭素系材料、水酸化物、酸化物、窒化物等が挙げられる。金属粉としては、アルミニウム粉末や銅粉末等が挙げられ、合金としては、低融点合金等が挙げられ、炭素系材料としては、カーボン、黒鉛等が挙げられ、水酸化物としては、水酸化アルミニウム、水酸化マグネシウム等が挙げられ、酸化物としては、酸化アルミニウム、酸化マグネシウム、酸化ベリリウム、酸化チタン等が挙げられ、窒化物としては、窒化アルミニウム、窒化ホウ素、窒化ケイ素等が挙げられ、熱伝導性の点から、黒鉛、水酸化マグネシウム、酸化マグネシウム、窒化アルミニウム、窒化ホウ素、窒化ケイ素、タルクが好ましい。組成物を導電部材として用いる場合、熱伝導性及び導電性の点から、黒鉛等が好ましく、絶縁部材として用いる場合、酸化マグネシウム、窒化ホウ素、タルク等が好ましい。
本発明のポリアミド樹脂組成物は、(D)ポリアミドエラストマーを含むことができる。(D)ポリアミドエラストマーの配合により、良好な熱伝導性を損なうことなく、機械的特性の一層の改善を図ることができる。
アミノカルボン酸としては、6-アミノカプロン酸、7-アミノヘプタン酸、8-アミノオクタン酸、10-アミノカプリン酸、11-アミノウンデカン酸、12-アミノドデカン酸等の炭素数5~20の脂肪族ω-アミノカルボン酸等が挙げられる。
ジアミンとしては、エチレンジアミン、トリメチレンジアミン、テトラメチレンジアミン、ヘキサメチレンジアミン、ヘプタメチレンジアミン、オクタメチレンジアミン、ノナメチレンジアミン、デカメチレンジアミン、ウンデカメチレンジアミン、ドデカメチレンジアミン、2,2,4-トリメチルヘキサン-1,6-ジアミン、2,4,4-トリメチルヘキサン-1,6-ジアミン、3-メチルペンタン-1,5-ジアミン等の炭素数2~20の脂肪族ジアミン等のジアミン化合物が挙げられる。
これらの中でも、低吸水による寸法安定性、耐薬品性、機械特性の観点からω-ラウリルラクタム、11-アミノウンデカン酸又は12-アミノドデカン酸が好ましい。
本発明のポリアミド樹脂組成物は(A)ポリアミド樹脂、(B)ガラス繊維、(C)熱伝導性フィラー及び(D)ポリアミドエラストマーを含むが、優れた機械的特性のみならず、良好な成形性と優れた熱伝導性を得る点から、(A)、(B)、(C)及び(D)の合計100質量部に対して、(B)ガラス繊維は9~35質量部である。この範囲で、(B)を組成物に配合することにより、機械的特性が向上するのみならず、意外にも、良好な成形性を保ったままで、熱伝導性が改善することが見出された。ガラス繊維は、通常、ポリアミド樹脂よりも熱伝導性が低いことからすると、このような熱伝導性の改善作用は予測し得ないことといえる。(B)の量は、9~33質量部が好ましく、15~20質量部がより好ましい。
本発明のポリアミド樹脂組成物には、(B)ガラス繊維と(D)ポリアミドエラストマーを組み合わせて配合するが、(D)は、(A)、(B)、(C)及び(D)の合計100質量部に対して、2~12質量部とすることができ、3~11質量部が好ましく、4~10質量部がより好ましい。
本発明のポリアミド樹脂組成物において、(C)熱伝導性フィラーは、(A)、(B)及び(C)及び(D)の合計100質量部に対して、20~75質量部とすることができ、25~60質量部が好ましく、27~50質量部がより好ましい。
本発明のポリアミド樹脂組成物は、(E)多価アルコールを含むことができる。(E)多価アルコールの配合により、成形性を向上させることができる。
本発明のポリアミド樹脂組成物には、本発明の効果を損なわない範囲で、添加剤を配合することができる。添加剤としては、例えば、熱安定剤、紫外線吸収剤、光安定剤、酸化防止剤、帯電防止剤、滑剤、ブロッキング防止剤、防曇剤、結晶核剤、離型剤、可塑剤、架橋剤、発泡剤、着色剤(顔料、染料等)等を添加することができる。ポリアミドエラストマー以外のエラストマーも使用することができる。
本発明のポリアミド樹脂組成物は、各成分を溶融混練して調製することができる。溶融混練の方法は、特に限定されず、単軸押出機、二軸押出機、ニーダー、バンバリーミキサー等の混練機を使用して行うことができる。
本発明のポリアミド樹脂組成物は、射出、押出、プレス等の成形加工法を使用して、成形品とすることができる。本発明のポリアミド樹脂組成物からなる成形品は、従来のポリアミド樹脂組成物の成形品の用途に使用することができ、積層体、シート、フィルム等として、自動車部材、コンピューター及び関連機器、光学機器部材、電気・電子機器、情報・通信機器、精密機器、土木・建築用品、医療用品、家庭用品等広範な用途に使用でき、とりわけ、電子部品、放熱部品、自動車部品等の用途に有用である。
(使用原料)
(A)ポリアミド樹脂
(A-1):ポリアミド6(宇部興産株式会社製P1011F、10メッシュのスクリーンメッシュを通過させた粉末、相対粘度2.22)
(B-1):収束剤がウレタン系である、平均繊維径10.0μm、繊維長3mmのガラス繊維
(B-2):収束剤がウレタン系である、平均繊維径10.5μm、繊維長3mmのガラス繊維
(B-3):収束剤がウレタン系である、平均繊維径13μm、繊維長3mmのガラス繊維
(B-4):収束剤がウレタン系である、平均繊維径17μm、繊維長3mmのガラス繊維
(B-5):収束剤がウレタン系である、平均繊維径23μm、繊維長3mmのガラス繊維
(B-6):収束剤がウレタン系である、平均繊維径10.5μm、繊維長3mmのガラス繊維と収束剤がウレタン系である、平均繊維径17μm、繊維長3mmのガラス繊維とを質量比5:5で併用。
(C-1):黒鉛、鱗片状、平均粒子径33μm
(C-2):酸化マグネシウム、球状、平均粒子径37μm
(C-3):窒化ホウ素、板状、平均粒子径38μm
(D-1):ポリエーテルアミドエラストマー(宇部興産製UBESTA XPA P9040X1、ペレットを粉砕し、10メッシュのスクリーンメッシュを通過させた粉末)
(D’-1):マレイン酸変性エチレン-ブテン樹脂(三井化学製 タフマーMH5020)
(D’-2):アイオノマー(三井・デュポンポリケミカル製 ハイミラン1855)
(D’-3):水添スチレン系熱可塑性エラストマー(旭化成ケミカルズ製 タフテックM1913)
(E-1):ペンタエリスリトール(日本合成化学工業株式会社製、融点260℃、比重1.4)
(1)混練性
実施例・比較例のペレット製造における混練性を以下のようにして判定した。
×:ダイスからペレタイザーまでストランドが切れずにペレット化できない
○:ダイスからペレタイザーまでストランドが切れずにペレット化できる
(2)流動性
実施例・比較例のペレットを使用して、シリンダー温度280℃、金型温度80℃、射出圧力100MPaの条件で、流動長測定を行った。
(3)熱伝導性
実施例・比較例のペレットを使用して、シリンダー温度280℃、金型温度80℃、長さ200、幅40、厚さ5mmの試験片を成形した。3枚の試験片を、各試験片間に熱伝導性ペースト(2.4W/(m・K))5gを均一に塗布し3枚重ねた。プローブ法により熱伝導率を測定した。
(4)耐衝撃性
ISO179-1/1eAに準拠して、23℃で測定を行った。
Claims (16)
- (A)ポリアミド樹脂、(B)ガラス繊維、(C)熱伝導性フィラー及び(D)ポリアミドエラストマーを含み、(A)、(B)、(C)及び(D)の合計100質量部に対して、(B)が、9~35質量部である、ポリアミド樹脂組成物。
- (A)、(B)、(C)及び(D)の合計100質量部に対して、(D)が、2~12質量部である、請求項1記載のポリアミド樹脂組成物。
- (A)、(B)、(C)及び(D)の合計100質量部に対して、(C)が、20~75質量部である、請求項1又は2記載のポリアミド樹脂組成物。
- (B)が、平均繊維径6~25μmのガラス繊維から選ばれる少なくとも1種である、請求項1~3のいずれか1項記載のポリアミド樹脂組成物。
- (A)ポリアミド樹脂が、ポリアミド6及びポリアミド12からなる群より選ばれる少なくとも1種である、請求項1~4のいずれか1項記載のポリアミド樹脂組成物。
- (C)が、黒鉛、水酸化マグネシウム、酸化マグネシウム、窒化アルミニウム、窒化ホウ素、窒化ケイ素及びタルクからなる群より選ばれる少なくとも1種である、請求項1~5のいずれか1項記載のポリアミド樹脂組成物。
- (D)が、ポリエーテルアミドエラストマーである、請求項1~6のいずれか1項記載のポリアミド樹脂組成物。
- さらに、(E)多価アルコールを含む、請求項1~7のいずれか1項記載のポリアミド樹脂組成物。
- (E)が、ペンタエリスリトールである、請求項8記載のポリアミド樹脂組成物。
- (A)、(B)、(C)及び(D)のみからなる、請求項1~7のいずれか1項記載のポリアミド樹脂組成物。
- さらに、(E)多価アルコールのみを含む、請求項10記載のポリアミド樹脂組成物。
- (E)が、ペンタエリスリトールである、請求項11記載のポリアミド樹脂組成物。
- さらに、任意成分としての添加剤のみを含む、請求項10~12のいずれか1項記載のポリアミド樹脂組成物。
- 任意成分としての添加剤が、熱安定剤、紫外線吸収剤、光安定剤、酸化防止剤、帯電防止剤、滑剤、ブロッキング防止剤、防曇剤、結晶核剤、離型剤、可塑剤、架橋剤、発泡剤及び着色剤からなる群から選ばれる少なくとも1種である、請求項13記載のポリアミド樹脂組成物。
- 請求項1~14のいずれか1項記載のポリアミド樹脂組成物からなる成形品。
- 積層体、電子部品、放熱部品又は自動車部品である、請求項15記載の成形品。
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US15/322,937 US10059842B2 (en) | 2014-06-30 | 2015-06-29 | Polyamide resin composition and molded article comprising same |
JP2016531345A JP6589864B2 (ja) | 2014-06-30 | 2015-06-29 | ポリアミド樹脂組成物及びそれからなる成形品 |
KR1020177002085A KR102268805B1 (ko) | 2014-06-30 | 2015-06-29 | 폴리아미드 수지 조성물 및 그것을 포함하는 성형품 |
EP15815340.3A EP3162855A4 (en) | 2014-06-30 | 2015-06-29 | Polyamide resin composition and molded article comprising same |
CN201580035629.2A CN106661324B (zh) | 2014-06-30 | 2015-06-29 | 聚酰胺树脂组合物及由其形成的成形品 |
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US (1) | US10059842B2 (ja) |
EP (1) | EP3162855A4 (ja) |
JP (1) | JP6589864B2 (ja) |
KR (1) | KR102268805B1 (ja) |
CN (1) | CN106661324B (ja) |
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Cited By (2)
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GB2570902A (en) * | 2018-02-08 | 2019-08-14 | Matrix Polymers Ltd | Polymer composition for rotational moulding |
JPWO2021157606A1 (ja) * | 2020-02-05 | 2021-08-12 |
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MX2020005347A (es) * | 2017-11-23 | 2020-08-13 | Basf Se | Composicion de poliamida para la produccion de cuerpos moldeados por soldadura. |
EP3502174B1 (de) * | 2017-12-22 | 2020-03-04 | EMS-Patent AG | Wärmeleitfähige polyamid-formmassen |
JP6647460B2 (ja) * | 2018-02-06 | 2020-02-14 | 大塚化学株式会社 | 摺動部材 |
CN108587143A (zh) * | 2018-03-29 | 2018-09-28 | 深圳市富恒新材料股份有限公司 | 一种高导热PA6-Surlyn树脂复合材料及其制备方法 |
EP3640280A1 (de) * | 2018-10-19 | 2020-04-22 | Evonik Operations GmbH | Leitfähige formmassen |
CN113462152A (zh) * | 2021-08-05 | 2021-10-01 | 深圳市沃特新材料股份有限公司 | Led灯杯、绝缘导热复合材料及其制备方法与应用 |
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- 2015-06-29 US US15/322,937 patent/US10059842B2/en active Active
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EP3162855A1 (en) | 2017-05-03 |
CN106661324B (zh) | 2019-08-02 |
KR20170023133A (ko) | 2017-03-02 |
JP6589864B2 (ja) | 2019-10-16 |
KR102268805B1 (ko) | 2021-06-25 |
JPWO2016002682A1 (ja) | 2017-04-27 |
US10059842B2 (en) | 2018-08-28 |
EP3162855A4 (en) | 2018-02-21 |
CN106661324A (zh) | 2017-05-10 |
US20170137622A1 (en) | 2017-05-18 |
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