WO2005028559A1 - 面衝撃安定性に優れた樹脂組成物 - Google Patents
面衝撃安定性に優れた樹脂組成物 Download PDFInfo
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- WO2005028559A1 WO2005028559A1 PCT/JP2004/013653 JP2004013653W WO2005028559A1 WO 2005028559 A1 WO2005028559 A1 WO 2005028559A1 JP 2004013653 W JP2004013653 W JP 2004013653W WO 2005028559 A1 WO2005028559 A1 WO 2005028559A1
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- polyphenylene ether
- resin composition
- polyamide
- block copolymer
- copper
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- 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
- C08K3/08—Metals
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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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
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; 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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
Definitions
- the present invention relates to a resin composition. More specifically, the present invention has a small variation in low-temperature surface impact strength, significantly reduces the decrease in tensile elongation after heat treatment and the discoloration of the molded product, and has excellent impact strength after stagnation at the melting temperature.
- the present invention relates to a fat composition.
- Polyamide polyphenylene ether-based materials have excellent mechanical properties, heat resistance, oil resistance, etc., and are particularly suitable for vehicle applications, such as body panels, fuel flapper, door mirror shells, wheel caps, air conditioner blowers, etc. It is used for various purposes such as fans and relay blocks. These components are required to maintain stable characteristics over a wide temperature range. Therefore, excellent mechanical properties after heat aging, discoloration resistance, and high impact strength in a low temperature state are required.
- Patent Document 1 and Patent Document 2 disclose a technique of blending a copper compound.
- the above-mentioned technology can certainly improve the mechanical properties and the like after thermal aging, the inclusion of copper results in a large discoloration of the molded piece after thermal aging, and the application and color There is a problem that restrictions are imposed.
- Patent Documents 3 to 5 disclose a technique of blending titanium dioxide.
- these technologies are mainly technologies for suppressing the discoloration of polyamide-polyphenylene ether-based materials, and have little effect on the suppression of discoloration due to exposure at high temperatures as described above. Don't play. In a system containing a large amount of titanium diacid, although a slight effect is recognized, the mechanical properties are reduced, and the system does not meet the market demand for high mechanical strength after thermal aging.
- Patent Document 6 discloses a technique in which a block copolymer having a specific viscosity is used and melt-kneaded at a specific temperature. There is a disclosure of a technique for forming a network structure of the block copolymer by using the method.
- Patent Document 7 discloses that at least half of the polyphenylene ether dispersed particles are dispersed with a dispersion diameter of 1.O / zm or less, and furthermore, the concentration of each terminal group of polyamide and polyphenylene ether is within a specific range. There is a disclosure of the technology to be inside.
- the techniques described above are not sufficient for practically improving the surface impact strength.
- the resin composition obtained by the above-described technique has a three-dimensional shape that is practically used, although the surface impact strength is improved for flat molded articles.
- the effect is not sufficient.
- molded products for vehicles such as body panels, fuel flappers, door mirror shells, wheel caps, blowers and fans for air conditioners, all have curved surfaces.
- the performance that the field really demands for the polyamide-polyphenylene ether-based material is the low-temperature surface impact strength against the impact on the curved surface portion.
- polyamide polyphenylene ether-based materials have a relatively high! Standard deviation when measuring the surface impact strength of flat molded pieces at low temperatures!
- the variation in impact strength is relatively large1.
- the low-temperature surface impact strength on the curved surface of the molded product even for a composition having sufficient surface impact strength on a flat molded piece, is higher than that of a flat molded piece.
- a resin composition having a more stable surface impact strength with no variation in the low-temperature surface impact strength on the flat molded piece is required. Obviously.
- Patent Document 1 US Pat. No. 4,857,575
- Patent Document 2 JP-A-6-157894
- Patent Document 3 JP-A-5-306368
- Patent Document 4 JP-A-5-295250
- Patent Document 5 JP-A-6-287446
- Patent Document 6 JP-A-63-92668
- Patent Document 7 JP-A-2002-338805
- One of the objects of the present invention is to provide a molded article having a curved surface with a small variation in its value as well as excellent surface impact strength at a low temperature, excellent surface impact strength, and tensile elongation after heat treatment. It is an object of the present invention to provide a resin composition in which a decrease in the degree of discoloration and discoloration of the molded article are significantly suppressed, and the impact strength after staying at the melting temperature is excellent. Another object of the present invention is to provide a molded article having such a resin composition strength.
- the inventors of the present invention have conducted intensive studies to solve the above-described problems, and as a result, have found that the dispersed state of the dispersed phase in the polyamide-polyphenylene ether resin composition containing copper and titanium dioxide and / or carbon black is considered. (I.e., the ratio of the volume average particle diameter to the number average particle diameter of the dispersed phase) is controlled to a specific range, and the weight average molecular weight of the polyphenylene ether in the composition is controlled to a specific range.
- the present inventors have found that a product can meet the purpose, and have completed the present invention based on this finding.
- the weight average molecular weight in the composition of the polyphenylene ether is in the range of 45,000 to 65,000
- the (c) partially hydrogenated block copolymer is an ABA-type or Z- or ABAB-type block copolymer, which also comprises an aromatic vinyl conjugate block (A) and a conjugated gen compound block (B).
- the (d) copper content is 120 ppm by mass based on the total mass of the resin composition, and the (e) content of titanium dioxide and Z or carbon black 0.1-2% by mass based on total mass,
- the (a) polyamide forms a continuous phase
- the (b) polyphenylene ether is dispersed in the continuous phase to form a dispersed phase
- the (c) partially hydrogenated block copolymer forms the (a) A) the continuous phase of the polyamide and the dispersion phase of the (b) polyphenylene ether are present in at least one selected phase, whereby the (c) partially hydrogenated block copolymer is present in the (b) polyphenylene When present in the dispersed phase of len ether, the (c) partially hydrogenated block copolymer forms a dispersed phase with the (b) polyphenylene ether, and the (c) partially hydrogenated block copolymer is (a) when present in the continuous phase of the polyamide, the (c) partially hydrogenated block copolymer alone forms a dispersed phase different from the (b) polyphenylene ether dispersed phase,
- the volume average particle diameter (Dv) and the number average of the dispersed phase containing the (b) polyphenylene ether and Z or the (c) partially hydrogenated block copolymer are dispersed in the (a) polyamide.
- Y represents oxygen or halogen. Further, a, b and C represent an integer of 0-7. The force a does not become zero. )
- the (b) polyphenylene ether includes (b-1) a polyphenylene ether copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol,
- Each monomer unit of the (b-1) polyphenylene ether copolymer is 80 to 90% by mass of 2,6 based on the total mass of the (b-1) polyphenylene ether copolymer.
- Fe XY (Wherein, Fe represents iron, X represents a group selected from OH, CH COO, SO, CN, Y
- a fat composition comprising:
- the weight average molecular weight in the composition of the polyphenylene ether is in the range of 45,000 to 65,000
- the (c) partially hydrogenated block copolymer is composed of an ABA-type or Z- or ABAB-type block copolymer, which also comprises an aromatic vinyl conjugate block (A) and a conjugated gen compound block (B).
- A aromatic vinyl conjugate block
- B conjugated gen compound block
- the (d) copper content is 120 ppm by mass based on the total mass of the resin composition, and the (e) content of titanium dioxide and Z or carbon black 0.1-2% by mass based on total mass,
- the (a) polyamide forms a continuous phase
- the (b) polyphenylene ether is dispersed in the continuous phase to form a dispersed phase
- the (c) partially hydrogenated block copolymer forms the (a) ) Polyamide continuous phase and (b) polyphenylene ether dispersed phase at least one phase selected Exists in
- the above resin composition is provided, wherein the ratio (DvZDn) of the volume average particle diameter (Dv) to the number average particle diameter (Dn) is in the range of 2.0 to 5.0.
- polyamide is obtained by ring-opening polymerization of ratatams, polycondensation of diamine and dicarboxylic acid, polycondensation of aminocarboxylic acid, and the like, but is not limited thereto.
- the diamines are roughly classified into aliphatic, alicyclic and aromatic diamines.
- Specific examples include tetramethylene diamine, hexamethylene diamine, pendecamethylene diamine, dodecamethylene diamine, tridecamethylene diamine, 2,2,4-trimethylhexamethylene diamine, 2,2 4,4-trimethylhexamethylenediamine, 5-methylnonamethylenediamine, 1,3-bisaminomethylcyclohexane, 1,4-bisaminomethylcyclohexane, m-phenylenediamine, p-phene Biliendiamine, m-xylylenediamine, p-xylylenediamine.
- Dicarboxylic acids are roughly classified into aliphatic, alicyclic, and aromatic dicarboxylic acids. Specific examples include adipic acid, suberic acid, azelaic acid, sebacic acid, dodecanoic acid, 1,1,3-tridecandioic acid, 1,3-cyclohexanedicarboxylic acid, terephthalic acid, isophthalic acid, and naphthalenedicarboxylic acid And dimer acid.
- ratatams include epsilon prolatatam, enantholactam, ⁇ lau mouth ratatam, and the like.
- aminocarboxylic acid examples include ⁇ -aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid, 11-aminoundecanoic acid, 12-aminododeric acid, and 13-aminotridecanoic acid.
- a copolymer polyamide obtained by subjecting these ratatams, diamine, dicarboxylic acid, and ⁇ -aminocarboxylic acid to polycondensation singly or as a mixture of two or more thereof is used. Any of the compounds can be used.
- those obtained by polymerizing these ratatams, diamine, dicarboxylic acid, and ⁇ -aminocarboxylic acid to a low-molecular-weight oligomer stage in a polymerization reactor and subjecting the mixture to a high-molecular-weight extruder or the like can also be suitably used.
- Particularly useful polyamides in the present invention include polyamide 6, polyamide 6, 6, polyamide 4, 6, polyamide 11, polyamide 12, polyamide 6, 10, polyamide 6, 12, polyamide 6, / 6, 6, Posiamide, 6/6, 12, Posiamide, MXD (m-xydilediamine) / 6, Posi T ⁇ 6, Polyamide, 6, I, Polyamide, 6/6, Bottom, Polyamide , 6/6, I, polyamide, 6, 6/6, ⁇ , positive amide, 6, 6/6, I, positive amide, 6/6, ⁇ / 6, I, positive amide, 6, 6/6, ⁇ / 6 , I, Pozier, Polya 6/12/6, Polya I, Polyamide, 6, 6/12/6, I etc. Polyamide obtained by copolymerizing a plurality of polyamides with an extruder etc. Kinds can also be used.
- Preferred polyamides are polyamide 6, polyamide 6,6, polyamide 6-6,6, and mixtures thereof, most preferably polyamide 6,6.
- the preferred number average molecular weight of the polyamide used in the present invention is 5,000 to 100,000, and more preferably ⁇ 10,000 to 30,000.
- the molecular weight of the polyamide in the present invention is not limited to these, and may be a mixture of a plurality of polyamides having different molecular weights.
- a mixture of a low molecular weight polyamide having a number average molecular weight of 10,000 or less and a high molecular weight polyamide of 30,000 or more a mixture of a low molecular weight polyamide having a number average molecular weight of 10,000 or less, and a general polyamide having a number of about 15,000 Etc.
- the terminal group of the polyamide participates in the reaction with the polyphenylene ether.
- Polyamide generally has an amino group or a carboxyl group as a terminal group. Generally, as the carboxyl group concentration increases, impact resistance decreases and fluidity improves. Conversely, when the amino group concentration increases, the impact resistance improves and the fluidity decreases.
- the amino group ⁇ carboxyl group concentration ratio of the polyamide terminal group in the present invention is preferably
- the concentration of the terminal amino group is preferably at least 10 meq Zkg. More preferably, it is 30 meq Zkg or more.
- a known method can be used for adjusting the terminal groups of these polyamides. Specifically, a method of adding a diamine, a dicarboxylic acid, a monocarboxylic acid, or the like so as to have a predetermined terminal concentration at the time of polymerization of the polyamide may be mentioned.
- the present invention it is effective to use two or more polyamides in combination. Specifically, by using a mixture of at least two kinds of polyamides having different molecular weights and different Z or terminal functional group concentrations, the surface impact strength at low temperatures can be further increased. Further, known additives which may be added to the polyamide may be added in an amount of less than 10 parts by mass with respect to 100 parts by mass of the polyamide.
- the (b) polyphenylene ether that can be used in the present invention is a homopolymer, a Z or a copolymer composed of structural units represented by the following formulas.
- polyphenylene ether of the present invention examples include, for example, poly (2,6-dimethyl-1,4-phenylene ether) and poly (2-methyl-6-ethyl-1,4-phenylene ether). ), Poly (2-methyl-6-phenyl-1,4-phenylene ether), poly (2,6-cyclochloro-1,4-phenylene ether) and the like. In addition, 2,6-dimethylphenol and other phenols (for example, 2,3,6-trimethylphenol and 2-methyl-6-butylphenol) )) and polyphenylene ether copolymers.
- poly (2,6 dimethyl-1,4-phenylene ether), and a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol are preferred, and poly (2,6 dimethyl-1,4 4 phenylene ether) is preferred.
- each monomer unit is particularly preferably (b-1) polyphenylene - based on the total weight of the polyphenylene ether copolymer Te, from about 80- to about 90 weight 0/0 2, 6-dimethyl phenol, about 10 to about 2 to 20 wt%, 3 , 6-Trimethylphenol.
- the method for producing the polyphenylene ether used in the present invention is not particularly limited as long as it is a known method.
- it can be easily produced by using a complex of cuprous chloride and amine as a catalyst and subjecting 2,6-dimethylphenol to oxidative polymerization.
- U.S. Pat.Nos. 3,330,687, 3,257,357, 3,257,358, JP-B-52-17880, JP-A-50-51197, and JP-A-63-152628 It can be easily manufactured by the method described in, for example.
- the weight average molecular weight of the polyphenylene ether that can be used in the present invention is preferably in the range of 4,000 to 100,000, more preferably in the range of 12,000 to 65,000, More preferably, it is in the range of 30,000-60,000.
- a blend of two or more kinds of polyphenylene ethers having different weight average molecular weights because a change in physical properties due to a change in processing conditions can be suppressed.
- examples thereof include, but are not limited to, a mixture of a polyphenylene ether having a molecular weight and a polyphenylene ether having a weight average molecular weight of 50,000 or more.
- the polyphenylene ether that can be used in the present invention includes both a polyphenylene ether that has been functionalized in a rough manner and a polyphenylene ether that has been functionalized. It does not matter.
- polyphenylene ethers having different reduced viscosities it is preferable that at least one kind of the polyphenylene ether is a functionalized polyphenylene ether! /, . More preferably, all of the polyphenylene ethers used are lightly functionalized polyphenylene ethers.
- the roughly functionalized polyphenylene ether as used herein means at least one carbon-carbon double bond or triple bond in the molecular structure and at least one carboxylic acid group, refers to a polyphenylene ether functionalized with at least one functionalized compound having an acid anhydride group, an amino group, a hydroxyl group, or a glycidyl group (hereinafter, abbreviated as a functionalized polyphenylene ether).
- the method for producing the functionalized polyphenylene ether includes (1) a temperature in the range of 100 ° C or more and less than the glass transition temperature of the polyphenylene ether in the presence or absence of a radical initiator.
- a reaction method and the like can be mentioned. Although any of these methods may be used, the method (1) or (2) is preferred.
- At least one compound having at least one carbon-carbon double bond or triple bond and at least one carboxylic acid group, acid anhydride group, amino group, hydroxyl group, or glycidyl group in the molecular structure is specifically described.
- Functionalized compounds having a carbon-carbon double bond, a carboxylic acid group, and an acid anhydride group in the molecule at the same time include maleic acid, fumaric acid, chloromaleic acid, cis 4-cyclohexene 1,2-dicarboxylic acid Acids and their acid anhydrides. Particularly, fumaric acid, maleic acid, and maleic anhydride are preferable, and fumaric acid and maleic anhydride are particularly preferable. Further, those in which one or two carboxyl groups of the carboxyl groups of these unsaturated dicarboxylic acids are esterified, or those in which the ester is decomposed at the processing temperature to be converted into carboxyl groups. Can also be used.
- Examples of the functionalized compound having a carbon-carbon double bond and a glycidyl group in the molecule at the same time include aryl glycidyl ether, glycidyl atalylate, glycidyl metharylate, and epoxiridani natural fats and oils. Of these, glycidyl atalylate and glycidyl methacrylate are particularly preferred.
- Examples of the functionalized compound having a carbon-carbon double bond and a hydroxyl group in the molecule at the same time include general formula CH OH (n is a positive integer) such as aryl alcohol, 4-pentene-1-ol, and 1,4-pentagen-3-ol. ), An unsaturated alcohol of the general formula CH OH, CH OH n 2n-3 n 2n-5 n 2n-7
- maleic anhydride is most preferred.
- the above functionalized compounds may be used alone or in combination of two or more.
- the amount of the functionalized compound to be added in producing the functionalized polyphenylene ether is preferably 0.1 to 10 parts by mass, more preferably 0.1 to 10 parts by mass, per 100 parts by mass of polyphenylene ether.
- the preferred amount of the radical initiator when producing the functionalized polyphenylene ether using the radical initiator is 0.001 to 1 part by mass per 100 parts by mass of the polyphenylene ether.
- an unreacted functionalized compound and Z or a polymer of the functionalized compound may remain.
- the amount of unreacted functionalized compound and polymer of Z or functionalized compound remaining in the functionalized polyphenylene ether may be less than 1% by weight based on the total weight of the functionalized polyphenylene ether, including those. Preferred Less than 0.5% by weight is particularly preferred.
- the functionalized compound addition rate of the functionalized polyphenylene ether that can be used in the present invention may be about 0.15 to about 0.7% by mass based on the total mass of the functionalized polyphenylene ether. desirable. More preferably from about 0.35 to about 0.6% by weight, most preferably from about 0.4 to about 0.55% by weight.
- the functionalizing compound is an acid
- the functionalization compound addition rate of the polyphenylene ether can be determined by dissolving the polyphenylene ether component in toluene and titrating with a solution of sodium methylate dissolved in methanol. It is possible.
- the molecular weight of the polyphenylene ether in the composition is preferably in a preferable range.
- An enclosure exists. It is important that the molecular weight of the polyphenylene ether in the composition be within the preferred range, and the molding having a curved surface with excellent low-temperature surface impact strength, which is the effect of the present invention, and small variation in the value. It is possible to exhibit the performance of having excellent surface impact strength when it is made into a body.
- the weight average molecular weight and the number average molecular weight of the polyphenylene ether indicate a molecular weight converted into standard polystyrene.
- the weight average molecular weight and the number average molecular weight of the polyphenylene ether in the composition can be measured by the following methods. Pellets or molded pieces of the resin composition composed of polyamide, polyphenylene ether are sliced to a thickness of 20 m using a microtome, and 0.2 g of the obtained slices are placed in a 100 g cross-section form at 50 ° C. Shake at the temperature for at least 1 hour to extract the polyphenylene ether into the form. Next, the obtained extract was measured with an ultraviolet spectrophotometer [UV-41: Showa Denko Co., Ltd.] using a gel permeation chromatography measurement device [GPC SYSTEM21: Showa Denko K.K.].
- polyphenylene ether is greatly changed by melting.
- a polyethylene ether raw material having a weight average molecular weight of about 50,000 is simply melt-kneaded to increase the molecular weight to about 70,000.
- those having a molecular weight of 22,000 increase to about 27,000 by melt kneading. This is because the radicals generated at the end of the polyphenylene ether molecular chain by heating are combined with other nearby polyphenylene ether molecules. It is thought to combine.
- a compatibilizer having an effect of suppressing a change in the molecular weight of the polyphenylene ether is included.
- compounds such as maleic acid, maleic anhydride, citric acid, itaconic acid and derivatives thereof, which are most commercially used in polyamide polyphenylene ether alloys, have this molecular weight change suppressing effect.
- the molecular weight of polyphenylene ether raw material having a weight average molecular weight of about 50,000 is melt-kneaded in the presence of maleic anhydride (about 2% by mass)
- the molecular weight increases only to about 58,000.
- the compatibilizer traps the radicals generated at the polyphenylene ether molecular chain terminals by heating and suppresses the bonding between the polyphenylene ether molecular chains. Since this inhibitory effect varies depending on the ratio of these compatibilizers to polyphenylene ether, even if the molecular weight of polyphenylene ether as a raw material is adjusted, the molecular weight of polyphenylene ether in the composition can be reduced. Is difficult to predict.
- the molecular weight of polyphenylene ether greatly changes depending on processing conditions (heating conditions, kneading conditions, and the like). Therefore, the molecular weight of the polyphenylene ether in the final composition will vary greatly depending on the processing conditions (differences in extruder screw diameter and screw length, screw configuration, discharge rate, screw rotation speed, etc.). .
- the molecular weight of the polyphenylene ether varies greatly depending on the amount of the compatibilizer and the processing conditions. Therefore, in order to obtain the composition of the present invention, it is necessary to optimize the conditions. If the composition is processed under unsuitable conditions and deviates from the range of the weight average molecular weight of the polyphenylene ether (in the composition) specified in the present invention, which is in the range of 45,000 to 65,000, a sufficient effect is exhibited. It may not be possible.
- the styrene-based thermoplastic resin may be blended in an amount of less than 100 parts by mass with respect to 100 parts by mass of the polyphenylene ether.
- the styrene thermoplastic resin referred to in the present invention includes polystyrene (including syndiotactic polystyrene), high impact polystyrene (HIPS), styrene acrylonitrile copolymer (AS resin), styrene-rubber polymer-acrylonitrile copolymer. Polymer (ABS resin) and the like.
- known additives which may be added to the polyphenylene ether may be added in an amount of less than 10 parts by mass based on 100 parts by mass of the polyphenylene ether.
- the partially hydrogenated block copolymer usable in the present invention is a partially hydrogenated block copolymer of an ABA and Z or ABAB type block copolymer comprising an aromatic bull compound block (A) and a conjugated diene compound block (B). It is an additive.
- the aromatic vinyl conjugate block (A) refers to a polymer block mainly composed of an aromatic vinyl compound
- the conjugated gen compound block (B) is a polymer block mainly composed of a conjugated conjugate. Refers to the united block.
- the term “principal” refers to containing at least 50% by mass, but more preferably contains at least 80% by mass.
- aromatic vinyl compound constituting the aromatic vinyl compound block (A) examples include styrene, ⁇ -methylstyrene, butyltoluene, etc., and one or more compounds selected from these compounds are used. Can be Of these, styrene is particularly preferred.
- conjugated conjugated product constituting the conjugated conjugated product block ( ⁇ ⁇ ) include butadiene, isoprene, piperylene, and 1,3-pentadiene.
- the above compounds are used. Of these, butadiene, isoprene and combinations thereof are preferred.
- the microstructure of the block portion of the conjugated conjugation product of the partially hydrogenated block copolymer is such that the 1,2-Bull content or the sum of the 1,2-Bull content and the 3,4-Bull content is 5-80. % Is preferred, and 10-50% is preferred, and 15-40% is most preferred.
- the mass ratio of the aromatic vinyl conjugate to the conjugated genie in the partially hydrogenated block copolymer is preferably 10Z90-90Z10. More preferably, it is 15 / 85-80-20. More preferably, it is 15Z85-60, 35, most preferably 20,80-45-55.
- two or more kinds of partially hydrogenated block copolymers having different mass ratios between the aromatic vinyl compound and the conjugated compound may be blended.
- Partial hydrogenation of the partially hydrogenated block copolymer refers to a process in which the block copolymer is subjected to a hydrogenation treatment so that the aliphatic double bond in the block copolymer exceeds 0 to 100. Controlled within the range of less than%.
- the partially hydrogenated block copolymer preferably has a hydrogenation rate of 50% or more, more preferably 80% or more, and most preferably 98% or more.
- the molecular weight of the partially hydrogenated block copolymer in the present invention was determined by using a GPC apparatus [SYSTEM21] manufactured by Showa Denko, using a foam form as a solvent, at 40 ° C. and a number average determined by ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ J using a polystyrene standard.
- Molecular weight force s force after 10,000-500,000 S preferred ⁇ , 200, 000-preferred over force after 300,000 ⁇ , 200,000-force after 250,000 ⁇ preferred ! / ⁇ .
- the number average molecular weight of one aromatic vinyl compound block in the partially hydrogenated block copolymer is more preferably 20,000 or more! /.
- the number average molecular weight of one aromatic vinyl aldehyde compound block in the partially hydrogenated block copolymer is calculated using the number average molecular weight of the partially hydrogenated block copolymer measured by the method described above. It can be obtained by the following equation.
- Mn ⁇ Mn X a / (a + b) ⁇ / N
- Mn is the number average molecular weight of one aromatic vinyl compound block
- Mn is the number average molecular weight of the partially hydrogenated block copolymer
- a is all the aromatics in the partially hydrogenated block copolymer.
- Mass% of the Beilui conjugate block is mass% of all the conjugated genie conjugate blocks in the partially hydrogenated block copolymer
- N is the fragrance in the partially hydrogenated block copolymer. Represents the number of tribe-rui dangling compound blocks.
- these partially hydrogenated block copolymers may have different bonding modes, different number average molecular weights, different types of aromatic vinyl conjugates, different types of conjugated diene compounds, 1 , 2-Bull content or 1,2-Bull content, 3,4-Bull content, aromatic vinyl compound component content, hydrogenation rate, etc. You can use it! Among these mixing types, it is desirable to mix two or more types having different number average molecular weights.
- the content of copper in the resin composition exceeds 20 ppm by mass, there is a disadvantage that discoloration increases during heat aging. In addition, if it is less than 1 mass ppm, The disadvantage is that the retention of the nominal tensile strain at break before the aging treatment is significantly reduced.
- the method of analyzing the content of copper in the resin composition can be determined, for example, by quantifying the characteristic wavelength of copper by high frequency inductively coupled plasma (ICP) emission analysis. Specifically, 0.5 g of the evaluation sample is weighed on a platinum dish and carbonized in a 500 ° C electric furnace. After cooling, add 5 ml of hydrochloric acid and 5 ml of pure water and dissolve by boiling on a heater. After cooling again and adding 500 ml of pure water to make it 500 ml, it can be quantified at the characteristic wavelength of copper by high frequency inductively coupled plasma (ICP) emission analysis using IRISZlP manufactured by Thermo JarrellAsh.
- ICP inductively coupled plasma
- the form in which copper is present in the resin composition may be any of metallic copper, copper ion, and a copper compound. preferable.
- Cu represents copper
- X represents a group selected from OH, CH COO, SO, CN
- Y represents oxygen or halogen. Further, a, b and C represent an integer of 0-7. The force a does not become zero. )
- copper in the present invention include one or more selected from metal copper, copper oxide, copper acetate, copper sulfate, copper iodide, copper chloride, copper bromide and the like.
- it is at least one selected from copper acetate, iodide copper, and copper chloride copper.
- copper iodide, copper chloride, or a mixture thereof is preferred.
- the copper of the present invention is more desirably added in the form of a masterbatch which is present in the polyamide in a forceful manner, rather than being added when producing the polyamide polyphenylene ether composition.
- the addition in a masterbatch greatly improves the dispersibility of the copper in the composition.
- the method of adding copper and / or a copper compound to polyamide is, for example, a method of blending a polyamide raw material with copper and / or a copper compound and then polymerizing the polyamide, or a step in the polymerization step of the polyamide.
- a method of attaching to the surface of a polyamide pellet is exemplified.
- the method is preferably a method of adding during the polymerization of polyamide, a method of melting a polyamide using an extruder or the like to disperse copper and / or a copper compound, and most preferably a method of adding during the polymerization of polyamide. is there.
- a polyamide containing copper and / or a copper compound in an amount of lOppm to 150ppm (as a copper content in the polyamide) is used. And / or it is desirable to use a mixture of at least two kinds of polyamides containing a copper compound in an amount of at least Oppm and less than 10 ppm (as the content of copper in the polyamide). More preferably, a mixture of a polyamide containing copper and / or a copper compound in an amount of 50 ppm or more and less than 120 ppm (as a copper content in the polyamide) and a polyamide substantially containing no copper is used.
- titanium dioxide and Z or carbon black in a range of 0.1 to 2% by mass based on the total mass of the resin composition. is there. More preferably, it is 0.2 to 1.0% by mass.
- a treated titanium dioxide which is surface-treated with a surface treating agent which is an alumina-silicon conjugate or a polysiloxane is preferably used.
- the content of the titanium dioxide is preferably in the range of 90 to 99% by mass, more preferably 93 to 98% by mass, based on the total amount of the surface treatment agent and the titanium dioxide. Is within the range. The amount of such a surface treating agent is not included in the content of titanium dioxide in the resin composition of the present invention.
- titanium dioxide particles used in the present invention preferably have a particle size distribution as small as possible, and more than half of the particles are in the range of 0.2 to 0.4 m. Desirable.
- the carbon black in the present invention includes a DBPA absorption amount (according to ASTM D2414).
- the carbon black is preferably less than lOOccZlOOg.
- the use of carbon black with a DBPA absorption of more than 10 OccZlOOg may reduce the flowability of the composition.
- titanium dioxide and Z or carbon black are preliminarily mixed with a polyamide and then mixed with a polyphenylene ether and a partially hydrogenated block copolymer.
- iron as an additional component may be added in a range not exceeding 300 ppm by mass (based on the total mass of the resin composition!). I don't care! /.
- iron present in the resin composition may be in any form of metallic iron, iron ion, or iron compound, but may be in the form of iron ion or iron compound. Is more preferred.
- iron is desirably added as a substance of the following formula.
- Fe represents iron
- X represents a group selected from OH, CH COO, SO, CN
- Y represents oxygen or halogen. Further, a, b and C represent an integer of 0-7. The force a does not become zero. )
- iron added to the resin composition of the present invention include metallic iron, iron oxide, and iron sulfate. Most preferably, it is iron oxide.
- composition ratio of ⁇ components in ⁇ composition of the present invention (a) polyamide about 40 to about 60 weight 0/0, (b) Porifue - ether about 10 to about 50 weight 0/0 And (c) a ratio of about 5 to about 20% by mass of the partially hydrogenated block copolymer. More preferably, about 45 to about 55% by weight of polyamide, about 20 to about 45% by weight of polyphenylene ether, and partially hydrogenated The ratio of the lock copolymer is about 5 to about 15% by mass.
- a compatibilizer may be used for the purpose of improving the miscibility of the polyamide and the polyphenylene ether.
- the compatibilizer usable in the present invention for example, the compatibilizer described in WO 01Z81473 can be preferably used.
- these compatibilizers maleic anhydride, maleic acid, citric acid, fumaric acid and the like can be preferably used, and maleic anhydride, maleic acid and citric acid are particularly preferable.
- the most preferred compatibilizer is maleic anhydride.
- the resin composition of the present invention comprises (a) a polyamide forming a continuous phase, (b) a polyphenylene ether dispersed in the continuous phase to form a dispersed phase, and (c) partial hydrogenation.
- the dispersion form is such that the block copolymer exists in at least one phase in which a continuous phase of (a) a polyamide and a dispersion phase of (b) a polyphenylene ether are also selected. More preferred dispersion forms are (a) a polyamide forming a continuous phase, (b) a polyphenylene ether dispersed in the continuous phase to form a dispersed phase, and (c) a partially hydrogenated block copolymer force.
- (B) This is a dispersion form present in the polyphenylene ether dispersed phase. That is, when (c) the partially hydrogenated block copolymer is present in the dispersed phase of (b) polyphenylene ether, (c) the partially hydrogenated block copolymer is dispersed together with (b) the polyphenylene ether. When (c) the partially hydrogenated block copolymer is present in the continuous phase of (a) polyamide, (c) the partially hydrogenated block copolymer is used alone, and (b) A dispersed phase different from the dispersed phase of the lenether will be formed.
- the number average particle diameter (Dn) of the dispersed phase in the resin composition of the present invention is preferably 0.2 to 3. O / zm, and the force S is desirably 0.5 to 2. O / zm. It is more desirable than S, and most preferably 0.7-1.5 m.
- the number average particle diameter (Dn) of the dispersed phase here is the same as the number average particle diameter described later, and the measurement method is also the same.
- the volume average particle diameter (Dv) and the number average particle diameter (Dv) of the dispersed phase containing the polyphenylene ether and the Z or partially hydrogenated block copolymer are The ratio (DvZDn) of Dn) is in the range of 2.0-5.0. More preferably, DvZDn is in the range of 2.5-5.0.
- ⁇ ⁇ volume average particle diameter (Dv) and number average particle diameter (Dn) This refers to the volume average particle size and number average particle size calculated by dissolving a diene ether-based resin composition in formic acid and measuring with a laser diffraction particle size distribution analyzer.
- the polyamide-polyethylene-ether-based resin composition is brought into a 0.01% -0.1% lgZl concentration in 90% formic acid using an ultrasonic cleaner over at least one hour.
- the polyamide component was completely dissolved, and the resulting dilute solution was measured using a laser diffraction type particle size distribution analyzer [SALAD-7000 (manufactured by Shimadzu Corporation)]. It refers to the volume average particle size and the number average particle size of the dispersed particles measured as 128 times.
- the dispersed phase of the resin composition of the present invention means a portion excluding a continuous phase mainly having a polyamide component power, and includes polyphenylene ether and Z or a partially hydrogenated block copolymer, Further, it contains the above components (d) and (e) and any additional components described below. However, component (d) and component (e) (and some of the optional additional components) usually exist with a particle size below the detection limit, and the Dv ZDn measurement of the dispersed phase described later Has no effect.
- the refractive index of the disperse phase in this measurement is a value close to the refractive index (1.575) of polyphenylene ether described in the literature (Polymer Handbook 3rd Edition), and it is well known in the literature. Vol. 30 No. 9 60, 2-60, 9 (1993) and the Journal of Powder Engineering, Vo 1.32 No. 11 796—803 (1995)]. Use the value obtained in.
- polyesters, polyolefins, and other thermoplastic resins and inorganic fillers can be used in the present invention.
- Known silane coupling agents and flame retardants e.g., halogenated resins, silicone-based flame retardants, magnesium hydroxide, magnesium hydroxide, etc.
- flame retardants e.g., halogenated resins, silicone-based flame retardants, magnesium hydroxide, magnesium hydroxide, etc.
- fluoropolymer having an anti-dripping effect a plasticizer (oil, low molecular weight polymer).
- flame retardant aids such as antimony trioxide, various peroxides, zinc oxide, zinc sulfide, antioxidants, ultraviolet absorbers, and light stabilizers.
- These components may be added in a range that does not exceed 50 parts by mass in total with respect to 100 parts by mass of the total of polyphenylene ether and polyamide!
- Specific processing machines for obtaining the resin composition of the present invention include, for example, a single-screw extruder, a twin-screw extruder, a roll, a kneader, a Brabender plastograph, and a Banbury mixer. .
- a twin-screw extruder is preferred, and a twin-screw extruder having an upstream supply port and one or more downstream supply ports is most preferred.
- a twin-screw extruder provided with a supply port at one location on the upstream side and at least one location at the downstream side is used.
- Supply polyphenylene ether and Z or functionalized polyphenylene ether, partially hydrogenated block copolymer, compatibilizer, polystyrene, polyamide, etc. as required.
- a method of adding a polyamide and, if necessary, a partially hydrogenated block copolymer from a downstream supply port, and melt-kneading the components may be used.
- the screw diameter of the extruder is not particularly limited, but is preferably about 20 mm or more and about 200 mm or less. More preferably, it is about 40 mm or more and about 125 mm or less, and most preferably, about 50 mm or more and less than about 100 mm.
- the LZD ratio (screw length Z screw diameter) of the extruder is preferably about 20 to about 60, more preferably about 30 to about 60, and most preferably about 40 to about 60! / ⁇ .
- the position of the downstream supply port in the extruder is preferably about 30 to about 70 when the first downstream supply port starts from the position of the upstream supply port of the extruder and the cylinder length is 100. A position within the range.
- the melt-kneading temperature is not particularly limited, but the conditions for obtaining a suitable resin composition are usually selected from about 240 to about 360 ° C. You can choose.
- the temperature is within the range of about 260 ° C and about 320 ° C, and in particular, about 280 ° C to about 320 ° C to the downstream supply port, and about 260 to about 290 ° C after the downstream supply port. It is desirable to do.
- the resin composition of the present invention thus obtained can be molded into various parts by various conventionally known methods, for example, injection molding, extrusion molding, and hollow molding. Particularly, it can be preferably used for a molded article having a curved surface within a radius of 20 to 40 cm in the molded article.
- a polyphenylene ether having a weight average molecular weight of about 34,000 [poly (2,6 dimethyl-1,4 phenylene ether)] (hereinafter referred to as PPE-1) manufactured by Asahi Kasei Chemicals Corporation
- PPE-2 polyphenylene ether having an average molecular weight of about 44,600 [poly (2,6 dimethyl-1,4 phenylene ether)]
- a mixture obtained by dry blending 2 parts by weight of maleic anhydride obtained from Mitsubishi I-Dagaku Co., Ltd. with respect to 100 parts by weight of 1 was supplied and melt-kneaded to obtain pellets.
- the cylinder temperature setting at this time is 320. C, the screw rotation speed was 300 rpm, and the discharge rate was 40 kgZh.
- the functionalized poly Hue - with maleic anhydride force ether (PPE-3) ⁇ is 0.55 mass 0/0, the weight average molecular weight was 41, 500.
- PPE-4 All functionalized polyphenylene ethers based on PPE-2 (hereinafter referred to as PPE-4) were prepared in the same manner as PPE-3 except that the PPE used was changed to PPE-2. Ren ether (PPE-4) was obtained. The obtained functionalized polyphenylene ether (PPE-4) had a maleic anhydride addition of 0.48% by mass and a weight average molecular weight of 57,800. [0084] The addition amount of maleic anhydride was measured by the following method.
- the molecular weight of the polyphenylene ether was measured with an ultraviolet spectrophotometer (UV-41: manufactured by Showa Denko KK) using a gel permeation chromatography measurement device (GPC SYSTEM21: manufactured by Showa Denko KK). And converted to the weight average molecular weight using the standard polystyrene conversion formula.
- UV-41 manufactured by Showa Denko KK
- GPC SYSTEM21 manufactured by Showa Denko KK
- polystyrene 685 obtained from PSJ was used as the polystyrene.
- the bonding form is polystyrene
- polyamide 6,6 (hereinafter referred to as PA66L) having a number average molecular weight of 14,500, a terminal amino group concentration of about 30 meq Zkg, and a terminal carboxyl group concentration of about 80 meq Zkg, and The average molecular weight is about 16,000, the terminal amino group concentration is about 50 milliequivalents Zkg, the terminal lipoxyl group concentration is about 80 milliequivalents Zkg, and polymerization is carried out under conditions where copper iodide and potassium iodide coexist during polymerization. Copper-containing polyamide 6,6 (hereinafter PA66) containing about 100 mass ppm of copper (quantified by ICP emission spectrometry) was used.
- copper iodide sold as a reagent obtained from Wako Pure Chemical Industries was used.
- copper iodide is all present in polyamides
- Soybean paste was added to the resin composition in the form of a mustard.
- Two types of polyamide master batches were prepared in which copper iodide was present in the polyamide in advance. One is PA66 described above, and the other is a masterbatch obtained by the following method.
- PA66L 100 parts by mass of PA66L was mixed with 3 parts by mass of copper iodide and dry blended.
- the cylinder temperature of a co-rotating twin-screw extruder with a screw diameter of 25 mm was set to 270 ° C, and the screw rotation speed was 300 rpm.
- the copper content in the obtained pellets was measured by ICP emission spectrometry to confirm the change in the copper content due to scattering during processing, and the result was approximately 1% by mass, almost as charged. .
- Rutile-type titanium dioxide "TiONA RCL-4" obtained from Millennium Chemicals (USA) was used as titanium dioxide. The product was heated at 750 ° C. for 3 hours under intense heat, and the amount of titanium dioxide contained therein was determined to be about 97% by mass. Further, heating at 105 ° C and determination of the moisture content revealed that it was about 0.25% by mass.
- Carbon black Raven2000 obtained from Columbian Chemicals was used. This carbon black has an average particle size of 18 nm measured according to ASTM-D3849, an NSA surface area measured according to ASTM-D4829 of 194 m 2 Zg, and a DBPA measured according to ASTM-D2414. It is a carbon black with an absorption of 65cm 3 Z100g.
- Iron used was iron oxide (Fe 2 O 3) obtained from Walsh & Associations (USA).
- organic stabilizer octadecyl-3- (3,5-di-teat-butyl-4-hydroxyphenyl) propionate was used.
- This stabilizer is available from, for example, Ciba Specialty Chemicals Co., Ltd.
- Molten resin temperature is 310 ° C, and only the cooling time in the molding cycle is intentionally set to 10 minutes (about 20 to about 30 seconds in normal molding), except that the resin stays in the cylinder of the molding machine in the molten state Obtained a multipurpose test piece retained in a high-temperature environment under the same molding conditions as in ordinary molding.
- the cylinder temperature of the IS80EPN injection molding machine was set to 290 ° C, the mold temperature was set to 90 ° C, and a flat molded piece having a length of 90 mm, a width of 50 mm, and a thickness of 2.5 mm was formed.
- the concentration was calculated by calculating the copper content in PA66 and Cul-masterbatch used as raw materials according to the mixing ratio.
- the obtained pellet was put into formic acid having a concentration of 90% to a concentration of 0.01 to 0.1 lgZl, and the polyamide component was completely dissolved using an ultrasonic cleaner for about 2 hours.
- the obtained diluted solution was measured using a laser diffraction type particle size distribution analyzer [SALAD-7000 (manufactured by Shimadzu Corporation)] to measure the absorbance in the range of 0.01 to 0.2 and the average number of measurements to be 128.
- the product average particle diameter (Dv) and the number average particle diameter (Dn) were measured, and the average particle diameter ratio (Dv ZDn) was calculated from the ratio.
- the refractive index of the dispersion phase to be measured was measured by the JFCC method, and was set between 1.55-1.60.
- a part of the multipurpose test piece was sliced to a thickness of 20 m using a microtome, and the resulting thin 0.2 g of the pieces were placed in 100 g of a black-mouthed form and shaken at a temperature of 50 ° C. for 70 minutes to extract polyphenylene ether into the chloroform.
- the weight average molecular weight of the obtained extract was measured with a gel permeation chromatograph in the same manner as in the measurement of the weight average molecular weight of the raw material polyphenylene ether.
- the nominal tensile strain change rate was calculated using the following equation using the nominal tensile strain value of the resin composition before and after the heat treatment.
- TE [(TE — TE)] X 100], TE
- TE is the nominal tensile strain change rate (unit:%) and TE is the pull after heat treatment.
- TE is nominal tensile strain at break before heat treatment (unit:%)
- the nominal tensile strain at break was measured by a method based on IS0527-1, except that the test speed was set to 5 mmZ using a multipurpose test piece that was subjected to the heat treatment and sample adjustment described below.
- the heating test is based on IS0188, and heat treatment is performed using a cabinet oven at an air exchange rate of 8 to 10 times for Z hours under a temperature condition of 100 ° C ⁇ 2 ° C for 250 hours. did. After the heat treatment, the multipurpose test piece was immediately placed in an aluminum moisture-proof bag, sealed with a heat seal, and left standing at 23 ° C for about 48 hours to prepare a sample.
- the flat test piece was subjected to a heat treatment under the same caloric heat conditions as those used in the above-mentioned measurement of the tensile fracture nominal strain change rate, and the color tone of the molded piece before and after heating was visually observed, and the following judgment was made. It was determined based on the criteria.
- the color of the test piece before heating is light gray.
- AAA Almost no change in color before and after heating.
- AA The test piece after heating is slightly discolored yellow compared to the test piece before heating.
- A The test specimen after heating is clearly discolored yellow compared to the test specimen before heating.
- Izod impact strength was measured in accordance with ISO180 using a multi-purpose test piece which was formed normally and a multi-purpose test piece which was stay-formed.
- the Izod impact strength change rate when the molding machine stayed was calculated by the following equation.
- IZOD [(IZOD -IZOD)] X 100] / IZOD
- the change after is the Izod impact strength (unit: kj / m 2 ) of the stay-formed specimen, TE
- a flat molded piece of 90mm in length, 50mm in width and 2.5mm in thickness is placed in a low-temperature constant temperature bath set at -30 ° C for 2 hours, sufficiently cooled, taken out, and quickly taken out of the sample holder with one diameter of 40mm and one diameter of striker.
- the surface impact strength was measured using a graphic impact tester (manufactured by Toyo Seiki Co., Ltd.) set under the conditions of 12.7 mm, a load of 60, kg, and a striker speed of 5 mZsec.
- the surface impact strength referred to in the present invention is represented by the value of the sum of the energy when a crack is generated in a flat plate (crack generation energy) and the energy when the crack propagates (propagation energy) (total absorbed energy).
- the measurement was performed on 10 sheets each, and the average value and the standard deviation were calculated for each of the values. Further, the obtained standard deviation was divided by the average value to obtain a measure of the magnitude of the variation with respect to the average value.
- a test piece with a curved surface (a molded piece with a thickness of 2.5 mm, a width of 100 mm, a length of 150 mm, and a radius of 300 mm in the length direction) is turned into a 90 mm x 90 mm small flat plate using a precision cut saw. , Cut out. At this time, the force at the center of the molded piece was also cut out.
- the surface impact strength at low temperature was measured using the cut small flat plate sample thus obtained. The measurement conditions at this time were the same as the low-temperature surface impact strength (flat plate) measurement.
- the small flat plate sample was fixed in such a direction that the striker would hit the convex part of the curved surface. The measurement was performed on 10 small plate samples, and the average and standard deviation were calculated from the individual values. The difference was calculated. Further, the obtained standard deviation was divided by the average value to obtain a measure of the magnitude of the variation with respect to the average value.
- the cylinder set temperature was set to 320 ° C from the upstream supply port to the first downstream supply port, and set to 280 ° C thereafter.
- the screw rotation speed at the time of feeding was set to 300 rpm, and the feed rate of each feeder was adjusted so that the discharge rate was about 60 kgZh.
- the screw configuration was almost the same as the screw configuration type H in Examples 10-12 described later.
- SEBS (parts by mass) 10 10 10 10 10 10 5 5 5
- Maleic anhydride (parts by mass) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
- PA66 (mass part) 40 40 40 40 40 50 50 40 10 50
- PA66 Halo 10 10 10 10 10 0 0 10 40 0
- Examples 1 to 9 show that when the copper content exceeds 20 ppm by mass as is clear from the results in Table 1 (Examples 4, 6 and 8), the discoloration of the molded piece after the heat treatment was increased and the copper content was not present! / In the case of the system (Examples 5 and 9), it was found that the physical properties deteriorated.
- 50 parts by mass of PA66L, 10 parts by mass of PA66, 0.8 parts by mass of titanium oxide, and 0.02 parts by mass of carbon black were supplied by dry blending and melt-kneaded to prepare a resin composition. .
- Example 10 the composition of each component of the resin composition was the same except for the force processing conditions.
- Example 10 the present invention
- Example 11 Comparative Example
- the Type S screw configuration emulsion used in Example 10 is a single-element package with two clockwise (feed-type) kneading elements and two -Eutral (residence-type) knitting elements [RRNN package ] In front of the downstream supply port and after the downstream supply port.
- Type H used in Example 11 has two clock-wise (feeding) needing elements, three -Eutral (retentive) needing elements, and an anti-clockwise (reverse-feeding) type.
- Kneading package consisting of one knitting element [RRNNNL package] is placed just before the downstream supply port, after the downstream supply port, and before the downstream supply port.
- the anticlockwise (reverse feed) screw element is configured with a screw configuration.
- Type H is a screw configuration with a very high kneading and stirring capacity.
- Example 11 differs from Example 12 (Comparative Example) only in the screw rotation speed during extrusion.
- ZSK70 In a mega-compound type extruder such as MC the screw rotation speed is usually selected in the range of 400-1, OOOr pm.
- Example 13-Example 16 using the same twin-screw extruder as in Example 10-12, from the upstream feed port, 40 parts by weight of PPE-2, 10 parts by weight of SEBS, and 0.3 parts by weight of maleic anhydride 40 parts by mass of PA66L, 10 parts by mass of PA66, 0.8 parts by mass of titanium oxide, and 0.02 parts by mass of carbon black were supplied by dry blending from the downstream supply port, and then melt-kneaded. A resin composition was prepared.
- Example 13 differs from Example 15 (Comparative Example) and Example 16 (Comparative Example) only in the screw configuration. Used in Example 13
- the screw configuration used is the same type H as in example 11, but the screw configuration of type M used in example 15 is based on type S and the -single element package in front of the downstream supply port is typed. It has been changed to H's RRNNNL package. In other words, the screw configuration of type M has a kneading / stirring capacity intermediate between types S and H.
- the screw configuration used in Example 16 is Type-S.
- Example 17 (invention) was processed using the same twin-screw extruder as in Example 19-19, using a screw of type H screw configuration, at a screw rotation speed of 300 rpm and a discharge rate of 60 kgZh. .
- the resin composition is the same as in Example 13.
- the low-temperature surface impact strengths of Examples 10 to 17 are graphed in FIG.
- Example 18-Example 22 0.8 parts by mass of titanium dioxide and 0.02 parts by mass of carbon black were dry-blended with a polyamide (total 50 parts by mass) supplied from the downstream supply port.
- the screw configuration during processing was type H, the screw rotation speed was 500 rpm, and the feed rate of each feeder was adjusted so that the discharge rate was 900 kgZh. Only in Example 22, the copper content in the resin composition was set to about 30 ppm.
- the resin composition of the present invention can be used in a wide range of fields such as electric and electronic parts, OA parts, vehicle parts, and mechanical parts.
- the resin composition of the present invention is used for exterior parts of motorcycles such as cowls, interior parts of automobiles such as blowers for air conditioners and fans, door panels for fenders, front panels, rear panels, and rocker panels.
- Rear bumper panel ⁇ Back door garment ⁇ Emblem garment ⁇ Fuel flano ⁇ ⁇ Over fender ⁇ ⁇ ⁇ Outer door handle ⁇ Door mirror shell It can be suitably used for 'wheel covers', automotive exterior panels such as various air port parts, and exterior parts.
- FIG. 1 shows the measured values of DvZDn on the X axis, the weight average molecular weight of polyphenylene ether in the resin composition on the Y axis, and the low-temperature surface impact strength (flat plate) at each plotted point.
- FIG. 5 is a diagram showing the values of low-temperature surface impact strength (curved surface) (the values described on the left are the low-temperature surface impact strength of a flat test piece, and the values described on the right are the low-temperature surface impact of a test piece having a curved surface. Strength).
- FIG. 2 is a flat molded piece having a curved surface created by injection molding.
- R in the figure indicates the radius of the curved surface.
Abstract
Description
Claims
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JP2005514059A JP4079970B2 (ja) | 2003-09-18 | 2004-09-17 | 面衝撃安定性に優れた樹脂組成物 |
US10/572,402 US7605204B2 (en) | 2003-09-18 | 2004-09-17 | Resin composition excellent in stability to face impact |
EP04787903.6A EP1666533B1 (en) | 2003-09-18 | 2004-09-17 | Resin composition excellent in stability to face impact |
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EP (1) | EP1666533B1 (ja) |
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Cited By (2)
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CN101163746B (zh) * | 2005-04-13 | 2011-05-25 | 旭化成化学株式会社 | 聚酰胺-聚苯醚树脂组合物 |
JP2017014397A (ja) * | 2015-07-01 | 2017-01-19 | 旭化成株式会社 | ポリアミド組成物、成形品、及びled用反射板 |
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CN103013018B (zh) * | 2012-12-06 | 2015-01-14 | 上海日之升新技术发展有限公司 | 一种高cti值、高gwit值阻燃玻纤增强hips/ppo合金材料 |
US20150183991A1 (en) * | 2013-11-20 | 2015-07-02 | Asahi Kasei Chemicals Corporation | Flame-retardant thermoplastic resin composition and molded article of the same |
JP2016110796A (ja) * | 2014-12-04 | 2016-06-20 | 旭化成ケミカルズ株式会社 | 供受給電部品 |
JP7403222B2 (ja) * | 2018-12-20 | 2023-12-22 | イーストマン ケミカル カンパニー | 樹脂組成物及び樹脂成形体 |
JP6996666B2 (ja) * | 2020-01-24 | 2022-01-17 | 東洋紡株式会社 | ポリアミド樹脂組成物の製造方法 |
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- 2004-09-17 WO PCT/JP2004/013653 patent/WO2005028559A1/ja active Application Filing
- 2004-09-17 EP EP04787903.6A patent/EP1666533B1/en active Active
- 2004-09-17 JP JP2005514059A patent/JP4079970B2/ja not_active Expired - Fee Related
- 2004-09-17 CN CNB2004800269671A patent/CN100406521C/zh active Active
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CN101163746B (zh) * | 2005-04-13 | 2011-05-25 | 旭化成化学株式会社 | 聚酰胺-聚苯醚树脂组合物 |
JP2017014397A (ja) * | 2015-07-01 | 2017-01-19 | 旭化成株式会社 | ポリアミド組成物、成形品、及びled用反射板 |
Also Published As
Publication number | Publication date |
---|---|
EP1666533A4 (en) | 2007-09-26 |
JP4079970B2 (ja) | 2008-04-23 |
US20070043154A1 (en) | 2007-02-22 |
CN100406521C (zh) | 2008-07-30 |
JPWO2005028559A1 (ja) | 2007-11-15 |
EP1666533A1 (en) | 2006-06-07 |
CN1852947A (zh) | 2006-10-25 |
EP1666533B1 (en) | 2016-07-06 |
US7605204B2 (en) | 2009-10-20 |
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