WO2017094696A1 - ガラス繊維強化ポリアミド樹脂組成物 - Google Patents
ガラス繊維強化ポリアミド樹脂組成物 Download PDFInfo
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- WO2017094696A1 WO2017094696A1 PCT/JP2016/085278 JP2016085278W WO2017094696A1 WO 2017094696 A1 WO2017094696 A1 WO 2017094696A1 JP 2016085278 W JP2016085278 W JP 2016085278W WO 2017094696 A1 WO2017094696 A1 WO 2017094696A1
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/005—Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Definitions
- the present invention is a glass fiber reinforced polyamide resin having excellent weather resistance and excellent appearance of a molded article, little black fading, and no floating of fillers such as glass fiber even under outdoor use conditions, particularly under exposure to rainfall. Relates to the composition.
- Polyamide resins are widely used in parts such as automobiles and electrical / electronic products because of their excellent mechanical properties, thermal properties, and chemical resistance.
- reinforced polyamide resin composition containing glass fiber in polyamide resin greatly enhances mechanical properties, heat resistance, chemical resistance, etc., so it is reinforced as a metal substitute material from the viewpoint of weight reduction and process rationalization. Studies using polyamide resin compositions have become active.
- Reinforced polyamide resin composition containing glass fiber, wollastonite, etc. at a high concentration can easily provide molded products with high rigidity, but has the disadvantage of poor weather resistance, and improved for use outdoors. is required.
- Patent Documents 1 to 3 have been proposed as methods for improving such weather resistance.
- Patent Document 1 proposes blending an acrylic resin and an epoxy group-containing compound with polymetaxylylene adipamide.
- an epoxy group-containing compound is essential, if there is a retention during molding, there is a drawback that the appearance of the molded product is impaired due to generation of a gel-like material or a decrease in melt fluidity. The weather resistance was also insufficient.
- Patent Document 2 proposes to mainly contain crystalline semi-aromatic polyamide and to contain glass fiber, wollastonite, carbon black, and copper compound.
- Patent Document 3 proposes to mainly contain crystalline semi-aromatic polyamide and to contain glass fiber, wollastonite, specific carbon black, and copper compound.
- Such a resin composition has the same disadvantages as in Patent Document 2, and it is necessary to use a specific carbon black. If aliphatic polyamide is mainly used, the fading of black after weathering exposure and the effect of improving weather resistance are not effective. It was enough and there was room for improvement.
- the present invention was devised in view of the current state of the prior art described above, and its purpose is excellent in the appearance of a molded product, and less black fading even under outdoor, particularly under use conditions exposed to rainfall. It is an object of the present invention to provide a glass fiber reinforced polyamide resin composition having no weathering of fillers and having excellent weather resistance.
- the present inventors have found that a crystalline aliphatic polyamide resin, an amorphous polyamide resin, an acrylic resin, mica, glass fiber, carbon black, and a copper compound. It was found that a glass fiber reinforced polyamide resin composition excellent in weather resistance can be provided by blending and at a specific ratio, and the present invention has been completed.
- the present invention employs the following configuration.
- Crystalline aliphatic polyamide resin (A), amorphous polyamide resin (B), acrylic resin (C), mica (D), glass fiber (E), and carbon black (F) (10 To 40): (2 to 20): (1 to 10): (2 to 25): (20 to 50): (0.1 to 5) in a mass ratio, and (A) to (F) )
- a glass fiber reinforced polyamide resin composition characterized by containing a copper compound (G) in a proportion of 0.005 to 1.0 part by mass when the total content of the components is 100 parts by mass.
- the glass fiber reinforced polyamide resin composition of the present invention provides a molded article excellent in weather resistance with little black fading and no floating of filler such as glass fiber even under use conditions exposed to rain. Can do.
- the glass fiber reinforced polyamide resin composition of the present invention comprises a crystalline aliphatic polyamide resin (A), an amorphous polyamide resin (B), an acrylic resin (C), mica (D), glass fiber (E), and Carbon black (F) is contained, and the mass ratio of each component of (A), (B), (C), (D), (E), and (F) is (10 to 40): (2 to 20): (1-10): (2-25): (20-50): (0.1-5).
- the glass fiber reinforced polyamide resin composition of the present invention contains 0.005 to 1.0 parts by mass of the copper compound (G) when the total content of the components (A) to (F) is 100 parts by mass. Contains in proportions.
- Examples of the crystalline aliphatic polyamide resin (A) include lactam, ⁇ -aminocarboxylic acid, dicarboxylic acid, diamine, and the like, and polyamide resins obtained by polycondensation thereof, or copolymers and blends thereof. It is done.
- Examples of the lactam and ⁇ -aminocarboxylic acid include ⁇ -caprolactam, 6-aminocaproic acid, ⁇ -enantolactam, 7-aminoheptanoic acid, 11-aminoundecanoic acid, 9-aminononanoic acid, ⁇ -pyrrolidone and ⁇ -piperidine. Etc.
- dicarboxylic acid examples include glutaric acid, adipic acid, azelaic acid, sebacic acid, and suberic acid.
- diamine examples include tetramethylene diamine, hexamethylene diamine, octamethylene diamine, undecamethylene diamine, and dodecamethylene diamine. Can be mentioned.
- crystalline aliphatic polyamide resin (A) polyamide 6, polyamide 12, polyamide 66, polyamide 46, polyamide 610, polyamide 612, and polyamide 1010 are preferable.
- the blending ratio of the crystalline aliphatic polyamide resin (A) is such that the total content of the component (A) and the components (B) to (F) described later in the glass fiber reinforced polyamide resin composition of the present invention is 100 parts by mass. In this case, it is 10 to 40 parts by mass, preferably 20 to 30 parts by mass.
- the blending ratio of the crystalline aliphatic polyamide resin (A) is less than the above range, it becomes difficult to melt and extrude the composition. On the other hand, when it exceeds the above range, the mechanical properties, thermal properties, etc. become inferior. Tend.
- the amorphous polyamide resin (B) is a polyamide resin in which no crystal melting peak is observed in the thermogram at the time of DSC measurement, and the dicarboxylic acid as a constituent component is terephthalic acid, isophthalic acid, adipic acid, sebacin
- diamines include tetramethylene diamine, hexamethylene diamine, metaxylylene diamine, paraxylylene diamine, undecamethylene diamine, dodecamethylene diamine, 2-methylpentamethylene diamine, trimethylhexamethylene diamine, amino Examples include ethyl piperazine and bisaminomethylcyclohexane.
- semi-aromatic polyamide is preferable in order to satisfy a high flexural modulus and a high impact resistance at the same time.
- semi-aromatic polyamide polyamide 6T / 6I using terephthalic acid, isophthalic acid and adipic acid as raw materials, and polyamide 6T / 66 using terephthalic acid, adipic acid and hexamethylenediamine as raw materials are preferable.
- the blending ratio of the amorphous polyamide resin (B) is the total content of the components (A) and (B) and the components (C) to (F) described below in the glass fiber reinforced polyamide resin composition of the present invention. In terms of parts by mass, it is 2 to 20 parts by mass, preferably 10 to 15 parts by mass.
- the blending ratio of the amorphous polyamide resin (B) is less than the above range, the appearance of the molded product is deteriorated. On the other hand, when it exceeds the above range, the mold release failure from the mold or the appearance of the molded product is deteriorated. There is a tendency to malfunction.
- the effect of improving weather resistance is increased by blending the amorphous polyamide resin (B) with the crystalline aliphatic polyamide resin (A). This reason is presumed to be because the dispersibility and compatibility of the acrylic resin (C) change.
- acrylic resin (C) examples include homopolymers or copolymers of methacrylic acid esters.
- a copolymer what contains 50 mass% or more of methacrylic acid ester, and also 70% or more is preferable.
- Specific examples of the methacrylic acid ester monomer include methyl methacrylate alkyl ester such as methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, ⁇ -hydroxyethyl methacrylate, N, N-dimethylaminoethyl.
- methacrylic acid alkyl ester derivatives in which an alkyl group hydrogen is substituted with a hydroxyl group, an amino group, or the like, such as methacrylate.
- monomers copolymerized with these methacrylic acid ester monomers include vinyl monomers such as methyl acrylate, styrene, ⁇ -methylstyrene, and acrylonitrile.
- acrylic resins (C) polymethyl methacrylate or polyethyl methacrylate is particularly preferred.
- the melt flow rate (MFR) under conditions of 230 ° C. and 37.3N is preferably 5 or more, and more preferably 15 or more.
- the blending ratio of the acrylic resin (C) is 100 parts by mass of the total content of the components (A) to (C) and the components (D) to (F) described later in the glass fiber reinforced polyamide resin composition of the present invention. 1 to 10 parts by mass, preferably 1 to 7 parts by mass, more preferably 2 to 7 parts by mass, and further preferably 3 to 7 parts by mass. If the blending ratio of the acrylic resin (C) is less than the above range, the weather resistance specification cannot be satisfied. On the other hand, if it exceeds the above range, the appearance is poor due to mold release or insufficient fluidity. There is a tendency that strength specifications cannot be satisfied.
- the blending ratio of the acrylic resin (C) is preferably 2 to 30 parts by mass with respect to 100 parts by mass in total of the polyamide resins (A) and (B).
- the blending ratio of the acrylic resin (C) is less than the above range, the effect of improving weather resistance is reduced.
- it exceeds the above range the strength, rigidity, solvent resistance, and heat resistance tend to increase. is there.
- mica (D) examples include muscovite, phlogopite, biotite, and artificial mica, and any of them may be used.
- the particle diameter of the mica is preferably about 1 to 30 ⁇ m from the balance of appearance and rigidity.
- the mixing ratio of mica (D) was set such that the total content of components (A) to (D) and components (E) and (F) described later in the glass fiber reinforced polyamide resin composition of the present invention was 100 parts by mass. In this case, it is 2 to 25 parts by mass, preferably 15 to 22 parts by mass.
- the mixing ratio of mica (D) is less than the above range, the effect of improving the appearance of the molded product is reduced. On the other hand, when it exceeds the above range, fluidity and mechanical strength tend to be inferior.
- the cross section of the glass fiber (E) may be either circular or flat.
- the flat cross-section glass fibers include those having a substantially elliptical shape, a substantially oval shape, or a substantially bowl shape in a cross section perpendicular to the length direction of the fiber, and a flatness of 1.5 to 8, or 2 to 5 It is preferable that Here, the flatness is assumed to be a rectangle with the smallest area circumscribing a cross section perpendicular to the longitudinal direction of the glass fiber, the length of the long side of the rectangle is the major axis, and the length of the short side is the minor axis. In this case, the ratio of major axis / minor axis.
- the impact resistance of the molded product may not be improved so much because there is no significant difference between the shape and the glass fiber having a circular cross section.
- the flatness exceeds the above range, the bulk density in the polyamide resin becomes high, so that it cannot be uniformly dispersed in the polyamide resin, and the impact resistance of the molded product may not be improved so much.
- glass fibers having a substantially oval cross section and a flatness of 2 to 5 are used, higher mechanical properties can be expressed.
- the compounding ratio of the glass fiber (E) is the (A), (B), (C), (D), (E) component in the glass fiber reinforced polyamide resin composition of the present invention and the (F) component described later.
- the total content is 100 parts by mass, it is 20 to 50 parts by mass, preferably 25 to 45 parts by mass.
- the blending ratio of the glass fiber (E) is less than the above range, the rigidity of the molded product is insufficient. On the other hand, when it exceeds the above range, the reinforcing effect corresponding to the blending amount tends not to be expressed.
- the polyamide-reactive silane coupling agent is 0.1 to 1.0% by mass of the glass fiber (E). It is preferable to add at a ratio.
- a small amount of a silane coupling agent is previously contained in the fiber bundle in the sizing agent for polyamide chopped strands.
- the amount of the aminosilane coupling agent that can be attached to the fiber bundle in advance has an upper limit so that the fiber bundle does not cause poor defibration at the time of extrusion.
- the carbon black (F) is not particularly limited, and examples thereof include thermal black, channel black, acetylene black, ketjen black, and furnace black. Preferred are those having an average particle size in the range of 10 to 40 ⁇ m, a specific surface area by the BET adsorption method in the range of 50 to 300 m 2 / g, and a measured value of oil absorption using dibutyl phthalate in the range of 50 cc / 100 g to 150 cc / 100 g. It is.
- Carbon black (F) is preferably blended as a master batch using a polyethylene resin or a polystyrene resin as a base resin in terms of workability.
- Base resins include low-density polyethylene (LDPE), high-density polyethylene (HDPE), various polyethylenes represented by ultra-high molecular weight polyethylene (UHMWPE), ethylene-propylene random copolymers and block copolymers, Copolymers of ethylene and ⁇ -olefins such as ethylene-butene random copolymers and block copolymers, copolymers of ethylene and unsaturated carboxylic esters such as ethylene-methacrylate and ethylene-butyl acrylate, ethylene -Polyethylene resins such as ethylene and aliphatic vinyl copolymers such as vinyl acetate, homopolymers such as polystyrene, poly ( ⁇ -methylstyrene), poly (p-methylstyrene), styrene-acrylon
- the blending ratio of carbon black (F) is 0.1 to 5 parts by mass when the total content of components (A) to (F) in the glass fiber reinforced polyamide resin composition of the present invention is 100 parts by mass. It is preferably 0.2 to 4.5 parts by mass, more preferably 0.2 to 3.5 parts by mass, and particularly preferably 0.2 to 3 parts by mass. If the blending ratio of the carbon black (F) is less than the above range, the contribution to weather resistance is reduced. On the other hand, if it exceeds the above range, mechanical strength and rigidity tend to be impaired.
- Copper compounds (G) include copper chloride, copper bromide, copper iodide, copper acetate, copper acetylacetonate, copper carbonate, copper borofluoride, copper citrate, copper hydroxide, copper nitrate, copper sulfate, copper oxalate Etc.
- the content ratio of the copper compound (G) is 100 mass of the total content of the components (A) to (F) in the glass fiber reinforced polyamide resin composition of the present invention. Part to 0.005 to 1.0 part by mass, preferably 0.01 to 0.5 part by mass.
- the content ratio of the copper compound (G) is less than the above range, the heat aging resistance tends to be inferior. On the other hand, even if the content exceeds the above range, no further improvement in the heat aging resistance is observed, and the physical properties deteriorate. Tend to.
- the copper compound (G) can be blended with a copper compound, and an alkali halide compound can be blended as a stabilizer.
- alkali halide compound include lithium bromide, lithium iodide, potassium bromide, potassium iodide, sodium bromide and sodium iodide, and potassium iodide is particularly preferred.
- the glass fiber reinforced polyamide resin composition of the present invention includes, in addition to the essential components (A) to (G) described above, a fibrous reinforcing material, an inorganic filler, light, or light as long as the properties of the present invention are not impaired.
- Arbitrary components such as a phenolic antioxidant, a phosphorus antioxidant, a mold release agent, a crystal nucleating agent, a lubricant, a flame retardant, an antistatic agent, a pigment, and a dye, can be blended as a heat stabilizer.
- the total content of optional components other than the essential components (A) to (G) is preferably 10% by mass at maximum.
- wollastonite is 5 parts by mass or less. It is preferable that it is present, and more preferably not contained.
- the method for producing the glass fiber reinforced polyamide resin composition of the present invention is not particularly limited, and each component can be obtained by melt kneading by a known kneading method.
- the specific kneading apparatus is not limited, and examples thereof include a single-screw or twin-screw extruder, a kneader, and a kneader.
- a twin-screw extruder is particularly preferable in terms of productivity.
- a copper compound (G) and other components are pre-blended with a blender into a mixture of polyamide resins (A), (B), and an acrylic resin (C), and then uniaxial or biaxial from a hopper.
- the mica (D) and the glass fiber (E) are fed into the molten mixture.
- melt-kneaded discharged into a strand, cooled, and cut.
- the glass fiber reinforced polyamide resin composition of the present invention is produced with the composition as described above, it has the following excellent weather resistance. That is, the color difference ⁇ E after a weather resistance test using a xenon weather meter (based on JIS K-7350-2) is 3.5 or less, preferably 2.5 or less, more preferably 2.0 or less. The details of the weather resistance test are according to the procedure described in the examples described later. When the color difference ⁇ E is equal to or less than the above value, it can be used outdoors when exposed to rain.
- xenon weather meter (XL75 manufactured by Suga Test Instruments Co., Ltd.), weather resistance test (black panel temperature: 63 ⁇ 2 ° C., relative humidity: 50 ⁇ 5%, irradiation method: 18 in 120 minutes) Minor rain (water jet), irradiation time: 1250 hours, irradiation degree: wavelength 300 nm to 400 nm 60 W / m 2 ⁇ S, optical filter: (inner) quartz, (outer) borosilicate # 275).
- the L, a, and b values were measured using a spectrocolorimeter TC-1500SX manufactured by Tokyo Denshoku Co., Ltd., and the color difference ⁇ E was calculated for the textured plate before and after the weather resistance test.
- Molded product surface appearance after exposure test (existence of reinforcement exposure): ⁇ : Reinforcing material is not exposed.
- X Exposure of the reinforcing material is recognized.
- the wrinkled state of the surface of the molded product after the exposure test ⁇ : The texture pattern is clearly visible. X: No wrinkle pattern is confirmed.
- Wollastonite “NYGLOS8” (fiber diameter 8 ⁇ m, fiber length 136 ⁇ m) manufactured by NYCO MINETAL Light stabilizer: Nylostab S-eed manufactured by Clariant
- Examples 1 to 9 Components other than mica (D), glass fiber (E), and wollastonite are dry blended at the blending ratios shown in Tables 1 and 2, and a bent type twin-screw extruder “STS 35 mm” manufactured by Coperion (barrel 12 block configuration). ) was melt-mixed under the extrusion conditions of a cylinder temperature of 280 ° C. and a screw rotation speed of 250 rpm, and then mica (D), glass fiber (E), and wollastonite were supplied by a side feed method and melt-kneaded. The strand extruded from the extruder was quenched and pelletized with a strand cutter.
- an embossed flat plate was molded with an injection molding machine (Toshiba Machine Co., Ltd., IS80) at a cylinder temperature of 280 ° C. and a mold temperature of 90 ° C. for evaluation.
- the evaluation results are also shown in Tables 1 and 2.
- surface is the quantity as a masterbatch.
- test pieces of Examples 1 to 9 have small color difference ⁇ E before and after the exposure test and suppress black fading. Moreover, the exposure of the glass fiber is suppressed and the texture is good.
- test pieces of Comparative Examples 1 to 7 have a large color difference ⁇ E before and after the exposure test, a large black fading, and the wrinkled appearance is impaired. It can be seen that although the color difference ⁇ E is good, it is inferior in weather resistance, bending strength and bending elastic modulus, respectively.
- the glass fiber reinforced polyamide resin composition of the present invention includes an outer handle, an outer door handle, a wheel cap, a roof rail, a door mirror base, a rear mirror arm, a sunroof deflector, a radiator fan, a radiator grill, a bearing retainer, a console box, a sun visor arm, It can be suitably used for interior and exterior parts for vehicles such as spoilers and sliding door rail covers.
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Abstract
Description
(1)結晶性脂肪族ポリアミド樹脂(A)、非晶性ポリアミド樹脂(B)、アクリル系樹脂(C)、マイカ(D)、ガラス繊維(E)、及びカーボンブラック(F)をそれぞれ(10~40):(2~20):(1~10):(2~25):(20~50):(0.1~5)の質量比で含有し、さらに前記(A)~(F)成分の合計含有量を100質量部とした場合に銅化合物(G)を0.005~1.0質量部の割合で含有することを特徴とするガラス繊維強化ポリアミド樹脂組成物。
(2)非晶性ポリアミド樹脂(B)が、半芳香族ポリアミドであることを特徴とする(1)に記載のガラス繊維強化ポリアミド樹脂組成物。
(3)前記ガラス繊維強化ポリアミド樹脂組成物を射出成形することにより平板を作製し、該平板について、JIS-K-7350-2に準拠して、耐候試験を行った場合の耐候試験前後の色差△Eが3.5以下であることを特徴とする(1)又は(2)に記載のガラス繊維強化ポリアミド樹脂組成物。
(4)(1)~(3)のいずれかに記載のガラス繊維強化ポリアミド樹脂組成物を用いて成形されていることを特徴とする車両内装用又は車両外装用成形品。
(5)アウターハンドル、アウタードアハンドル、ホイールキャップ、ルーフレール、ドアミラーベース、ルームミラーアーム、サンルーフデフレクター、ラジエーターファン、ラジエーターグリル、ベアリングリテーナー、コンソールボックス、サンバイザーアーム、スポイラー、及びスライドドアレールカバーからなる群から選ばれることを特徴とする(4)に記載の車両内装用又は車両外装用成形品。
すなわち、キセノンウェザーメーターを用いた耐候試験(JIS K-7350-2に準拠)後の色差△Eが3.5以下、好ましくは2.5以下、より好ましくは2.0以下である。耐候試験の詳細は、後記する実施例に記載の手順による。色差△Eが上記値以下であることにより、降雨に曝される屋外での使用に耐えることができる。
RV=T/T0
RV:相対粘度、T:サンプル溶液の落下時間、T0:溶媒の落下時間
色差ΔE:射出成形機(東芝機械株式会社製、IS80)でシリンダー温度280℃、金型温度90℃にて成形したシボ平板(100mm×100mm×2mm)について、JIS K-7350-2に準拠し、キセノンウェザーメーター(スガ試験機株式会社製XL75)を用い、耐候試験(ブラックパネル温度:63±2℃、相対湿度:50±5%、照射方法:120分中18分降雨(水噴射)、照射時間:1250時間、照射度:波長300nm~400nm 60W/m2・S、光学フィルター:(内)石英、(外)ボロシリケイト♯275)を行った。耐候試験前後のシボ平板について、東京電色社製分光測色計TC-1500SXを用いてL、a、b値を測定し、色差ΔEを算出した。
暴露試験後の成形品表面外観(強化材露出の有無):
○:強化材の露出が認められない。×:強化材の露出が認められる。
暴露試験後の成形品表面のシボ状態:
○:シボの模様がはっきり見える。×:シボの模様が確認されない。
(A1)相対粘度RV=1.9のポリアミド6、東洋紡社製「ナイロンT-860」
(A2)相対粘度RV=2.4のポリアミド66、ローディア社製「スタバミド23AE」
・非晶性ポリアミド樹脂(B)
(B1)相対粘度RV=2.0のポリアミド6T6I、エムス社製「グリボリーG21」、
(B2)相対粘度RV=1.8のポリアミド6T6I、エムス社製「グリボリーG16」
ポリメタクリル酸メチル、クラレ社製「パラペットGF」
・マイカ(D)
Repco社製「S-325」
・ガラス繊維(E)
日本電気硝子社製「T-275H」(円形断面ガラス繊維チョップドストランド:直径11μm)
・カーボンブラック(F)
マスターバッチ:住化カラー社製「EPC-840」:ベース樹脂 LDPE樹脂、カーボンブラック含有量43%
・銅化合物(G)
臭化第二銅:和光純薬社製 純度99.9%
ワラストナイト:NYCO MINERAL社製「NYGLOS8」(繊維径8μm、繊維長136μm)
光安定剤:クラリアント社製 ナイロスタブS-eed
表1及び表2に示す配合割合で、マイカ(D)、ガラス繊維(E)、ワラストナイト以外の成分をドライブレンドし、コペリオン社製ベント式2軸押出機「STS35mm」(バレル12ブロック構成)を用いてシリンダー温度280℃、スクリュウ回転数250rpmの押出条件で溶融混合し、次いでマイカ(D)、ガラス繊維(E)、ワラストナイトをサイドフィード方式で供給し溶融混練を行った。押出機から押出されたストランドを急冷してストランドカッターでペレット化した。得られたペレットを100℃で12時間乾燥した後、射出成形機(東芝機械株式会社製、IS80)でシリンダー温度280℃、金型温度90℃にてシボ平板を成形して評価に供した。評価結果も表1及び表2に記した。なお、表中のカーボンブラックマスターバッチ(F)の配合量は、マスターバッチとしての量である。
Claims (5)
- 結晶性脂肪族ポリアミド樹脂(A)、非晶性ポリアミド樹脂(B)、アクリル系樹脂(C)、マイカ(D)、ガラス繊維(E)、及びカーボンブラック(F)をそれぞれ(10~40):(2~20):(1~10):(2~25):(20~50):(0.1~5)の質量比で含有し、さらに前記(A)~(F)成分の合計含有量を100質量部とした場合に銅化合物(G)を0.005~1.0質量部の割合で含有することを特徴とするガラス繊維強化ポリアミド樹脂組成物。
- 非晶性ポリアミド樹脂(B)が、半芳香族ポリアミドであることを特徴とする請求項1に記載のガラス繊維強化ポリアミド樹脂組成物。
- 前記ガラス繊維強化ポリアミド樹脂組成物を射出成形することにより平板を作製し、該平板について、JIS-K-7350-2に準拠して、耐候試験を行った場合の耐候試験前後の色差△Eが3.5以下であることを特徴とする請求項1又は2に記載のガラス繊維強化ポリアミド樹脂組成物。
- 請求項1~3のいずれかに記載のガラス繊維強化ポリアミド樹脂組成物を用いて成形されていることを特徴とする車両内装用又は車両外装用成形品。
- アウターハンドル、アウタードアハンドル、ホイールキャップ、ルーフレール、ドアミラーベース、ルームミラーアーム、サンルーフデフレクター、ラジエーターファン、ラジエーターグリル、ベアリングリテーナー、コンソールボックス、サンバイザーアーム、スポイラー、及びスライドドアレールカバーからなる群から選ばれることを特徴とする請求項4に記載の車両内装用又は車両外装用成形品。
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