WO2011155289A1 - ポリブチレンテレフタレート樹脂組成物、金属複合部品、及び金属複合部品の製造方法 - Google Patents
ポリブチレンテレフタレート樹脂組成物、金属複合部品、及び金属複合部品の製造方法 Download PDFInfo
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- WO2011155289A1 WO2011155289A1 PCT/JP2011/061084 JP2011061084W WO2011155289A1 WO 2011155289 A1 WO2011155289 A1 WO 2011155289A1 JP 2011061084 W JP2011061084 W JP 2011061084W WO 2011155289 A1 WO2011155289 A1 WO 2011155289A1
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- terephthalate resin
- polybutylene terephthalate
- metal composite
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- parts
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
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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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/006—PBT, i.e. polybutylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2707/00—Use of elements other than metals for preformed parts, e.g. for inserts
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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
- C08K3/22—Oxides; Hydroxides of metals
Definitions
- the present invention relates to a polybutylene terephthalate that provides a metal composite part having excellent adhesion between the metal part and the polybutylene terephthalate resin composition when the metal part and the polybutylene terephthalate resin composition are combined to produce a metal composite part.
- the present invention relates to a resin composition.
- the present invention also relates to a method for producing a metal composite part comprising a metal part and a polybutylene terephthalate resin composition, and having excellent adhesion between the metal part and the polybutylene terephthalate resin composition.
- the present invention relates to a metal composite part comprising a metal part and a polybutylene terephthalate resin composition, and having excellent adhesion between the metal part and the polybutylene terephthalate resin composition.
- thermoplastic resin manufactured by combining thermoplastic resin and metal parts by molding methods such as insert molding, outsert molding, and hoop molding have been widely used in home appliances, information communication equipment, automobile parts, etc. ing.
- a metal composite laminated part in which a thermoplastic resin is laminated on a part of or the entire surface of a metal plate has a functionality such as strength. From the viewpoints of lightness, design, etc., it has been attracting attention as a casing for small information / communication equipment such as mobile phones and notebook personal computers.
- thermoplastic resin used in such metal composite parts is required to have durability against various external stimuli, so mechanical characteristics, heat resistance, electrical characteristics, weather resistance, water resistance, chemical resistance, solvent resistance, etc. It is desired that these various properties are excellent, and from the standpoint of production efficiency, it is desired that they can be melt-molded by a method such as injection molding. For this reason, use of the polybutylene terephthalate resin composition excellent in various physical properties and moldability for metal composite parts has been studied.
- a metal composite part is produced by a method such as injection molding using a polybutylene terephthalate resin or a polybutylene terephthalate resin composition
- the resin has a higher coefficient of linear expansion than a metal, or a low-temperature metal part. Since the shrinkage after molding differs greatly from the resin at high processing temperature, even if the metal part and the resin are in good contact within the mold, the metal part and the resin are in close contact after molding. There is a problem that the performance decreases.
- polybutylene terephthalate resin has a high processing temperature, the thermoplastic resin on the surface of the metal part rapidly solidifies due to the contact between the molten thermoplastic resin and the low-temperature metal plate in the mold. In this manufacturing method, there is a problem that it is difficult to manufacture a metal composite part having excellent adhesion between the metal part and the polybutylene terephthalate resin composition.
- a metal composite part is formed from a metal part and a polybutylene terephthalate resin or a polybutylene terephthalate resin composition by a method such as injection molding, a method for improving the adhesion between the metal part and the resin has been developed. It is desired.
- a method for improving the adhesion between a metal part and a resin in a metal composite part using a polybutylene terephthalate resin or a polybutylene terephthalate resin composition for example, for a metal part made of an aluminum alloy, in the following order: Anodizing treatment, mechanical removal treatment of oxide layer film, etching treatment with acidic aqueous solution, contact treatment with hydrazine, etc.
- Patent Document 1 A method of manufacturing a metal composite part by compounding a terephthalate resin composition by injection molding (Patent Document 1), or after immersing a finely etched metal part in an aqueous solution of a water-soluble alcohol, the metal part and the polyethylene terephthalate resin Containing polybutylene terephthalate tree
- Patent Document 2 A composition process for producing a metal composite part with composite (Patent Document 2) are known by injection molding.
- the present inventors produce a metal composite part by blending a polybutylene terephthalate resin with a specific amount of polyethylene terephthalate resin modified with other dicarbonyl units of terephthaloyl units, even at a low mold temperature of 100 ° C. or less, It has been found that a metal composite part having excellent adhesion between the metal part and the polybutylene terephthalate resin composition can be obtained, and the present invention has been completed. Specifically, the present invention provides the following.
- the (B) modified polyethylene terephthalate resin contains 5 mol% or more and 50 mol% or less of another dicarbonyl unit of the terephthaloyl unit in all dicarbonyl units, Metal composite part whose content of said (B) modified polyethylene terephthalate resin is 10 to 50 mass% with respect to the total mass of said (A) polybutylene terephthalate resin and said (B) modified polyethylene terephthalate resin
- the (C) flame retardant is one or more phosphorus-based flame retardants selected from the group consisting of phosphinates, diphosphinates, and salts of phosphinic acid condensates of trimers or more,
- the content of the flame retardant (C) is 10 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin (3 ) A polybutylene terephthalate resin composition for forming metal composite parts as described above.
- R 3 is a linear or branched C 1-10 -alkylene group, arylene group, alkylarylene group or arylalkylene group, and M is an alkaline earth metal, alkali metal, Zn, Al, Fe, Boron, m is an integer from 1 to 3, n is an integer from 1 or 3, and x is 1 or 2.
- a nitrogen-containing flame retardant assistant which is a salt of a triazine compound represented by the following general formula (3) and cyanuric acid or isocyanuric acid is contained as a flame retardant assistant (D),
- the content of the flame retardant aid is 1 part by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin.
- R 4 and R 5 are a hydrogen atom, an amino group, an aryl group, or an oxyalkyl group having 1 to 3 carbon atoms, and R 4 and R 5 may be the same or different.
- the (C) flame retardant is a brominated flame retardant, and the content of the (C) flame retardant is 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin.
- an antimony compound is contained as a flame retardant aid (D),
- the content of the flame retardant aid is 1 part by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin.
- (F) contains a fluorine-based resin
- (F) The content of the fluorine-based resin is 0.1 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin.
- (1) to (11) The polybutylene terephthalate resin composition for forming a metal composite part according to any one of the above.
- (G) contains an elastomer
- the content of the elastomer (G) is 1 part by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the total amount of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin.
- a metal composite part comprising the polybutylene terephthalate resin composition for molding a metal composite part according to any one of (1) to (13) and a metal part.
- the (B) modified polyethylene terephthalate resin contains 5 mol% or more and 50 mol% or less of another dicarbonyl unit of the terephthaloyl unit in all dicarbonyl units, A molding material in which the content of the (B) modified polyethylene terephthalate resin is 10% by mass or more and 50% by mass or less based on the total mass of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin, A method for manufacturing a metal composite part, which is supplied to a mold on which a metal part is placed by a molding machine.
- a polybutylene terephthalate resin composition capable of molding a metal composite part having excellent adhesion between the metal part and the polybutylene terephthalate resin composition even at a mold temperature of 100 ° C. or less.
- a method for producing a metal composite part capable of producing a metal composite part having excellent adhesion between the metal composite part and the polybutylene terephthalate resin composition even at a mold temperature of 100 ° C. or less.
- a metal composite part having excellent adhesion between the metal part and the polybutylene terephthalate resin composition is provided.
- metal composite part molding material the metal composite part manufacturing method, and the metal composite part will be described in order.
- the molding material used for the production of the metal composite part is (C) a flame retardant, (D) a flame retardant, if desired, for (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin.
- One or more components selected from the group consisting of an auxiliary agent, (E) filler, (F) tetrafluoroethylene polymer, (G) elastomer, and (H) other additives are blended. .
- the molding material of the metal composite part used in the present invention is not particularly limited as long as it contains a predetermined amount of the components (A) to (H).
- Specific examples of the form of the molding material of the metal composite part include (i) pellets, flakes, or powders of a polybutylene terephthalate resin composition obtained by melt-kneading all components contained in the molding material, and (ii) (A) polybutylene terephthalate resin, or (A) pellets, flakes or powder of a polybutylene terephthalate resin composition comprising a polybutylene terephthalate resin and a desired component, and (B) a modified polyethylene terephthalate resin, or (B) (B) The pellet of the modified polyethylene terephthalate resin composition which consists of a modified polyethylene terephthalate resin and a desired component, flakes, or the mixture of powder is mentioned.
- polybutylene terephthalate resin composition a material in which all components in the molding material are integrated by a method such as melt-kneading or melt molding is referred to as “polybutylene terephthalate resin composition”, and molding is performed.
- a material in which at least one component in the material is not integrated with other components is referred to as a “polybutylene terephthalate resin mixture”.
- the molding material is a polybutylene terephthalate resin composition obtained by melting and kneading all the components, the shape is preferably a pellet because of excellent operability during molding.
- a suitable method for producing a polybutylene terephthalate resin composition by melt kneading includes a method using a melt kneading apparatus such as a single-screw or twin-screw extruder.
- A polybutylene terephthalate resin
- B modified polyethylene terephthalate resin
- C flame retardant
- D flame retardant auxiliary
- E filler
- F filler
- the (A) polybutylene terephthalate resin used in the present invention comprises a dicarboxylic acid component containing at least terephthalic acid or an ester-forming derivative thereof (C 1-6 alkyl ester, acid halide, etc.) and an alkylene having at least 4 carbon atoms.
- the polybutylene terephthalate resin is not limited to a homopolybutylene terephthalate resin, but may be a copolymer containing 60 mol% or more (particularly 75 mol% or more and 95 mol% or less) of a butylene terephthalate unit.
- the amount of terminal carboxyl group of (A) polybutylene terephthalate resin used in the present invention is not particularly limited as long as the object of the present invention is not impaired.
- the terminal carboxyl group amount of the (A) polybutylene terephthalate resin used in the present invention is preferably 30 meq / kg or less, and more preferably 25 meq / kg or less.
- the resulting metal composite part is less susceptible to strength reduction due to hydrolysis in a moist heat environment.
- the intrinsic viscosity of the (A) polybutylene terephthalate resin used in the present invention is not particularly limited as long as the object of the present invention is not impaired.
- the intrinsic viscosity (IV) of the polybutylene terephthalate resin is preferably 0.60 dL / g or more and 1.2 dL / g or less. More preferably, it is 0.65 dL / g or more and 0.9 dL / g or less.
- the resulting polybutylene terephthalate resin composition has particularly excellent moldability.
- the intrinsic viscosity can be adjusted by blending polybutylene terephthalate resins having different intrinsic viscosities.
- a polybutylene terephthalate resin having an intrinsic viscosity of 0.9 dL / g is prepared by blending a polybutylene terephthalate resin having an intrinsic viscosity of 1.0 dL / g and a polybutylene terephthalate resin having an intrinsic viscosity of 0.7 dL / g. Can do.
- the intrinsic viscosity (IV) of the polybutylene terephthalate resin can be measured, for example, in o-chlorophenol at a temperature of 35 ° C.
- examples of dicarboxylic acid components (comonomer components) other than terephthalic acid and its ester-forming derivatives include, for example, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 4 C 8-14 aromatic dicarboxylic acids such as 4,4'-dicarboxydiphenyl ether; C 4-16 alkanedicarboxylic acids such as succinic acid, adipic acid, azelaic acid and sebacic acid; C 5-10 such as cyclohexanedicarboxylic acid And cycloalkane dicarboxylic acids of the above; ester-forming derivatives of these dicarboxylic acid components (C 1-6 alkyl ester derivatives, acid halides, etc.). These dicarboxylic acid components can be used alone or in combination of two or more.
- C 8-12 aromatic dicarboxylic acids such as isophthalic acid
- C 6-12 alkanedicarboxylic acids such as adipic acid, azelaic acid, and sebacic acid are more preferable.
- glycol components (comonomer components) other than 1,4-butanediol examples include ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butylene glycol, hexa C 2-10 alkylene glycol such as methylene glycol, neopentyl glycol, 1,3-octanediol; polyoxyalkylene glycol such as diethylene glycol, triethylene glycol and dipropylene glycol; fat such as cyclohexanedimethanol and hydrogenated bisphenol A Cyclic diols; aromatic diols such as bisphenol A and 4,4′-dihydroxybiphenyl; ethylene oxide 2-mole adducts of bisphenol A; Such as alkylene oxide 3 moles adduct, alkylene oxide adducts of C 2-4 of bisphenol A; or ester-forming derivatives of these glycols (acetylene glycol, ethylene glycol, propylene glycol, trimethylene glycol, 1,
- C 2-6 alkylene glycol such as ethylene glycol and trimethylene glycol
- polyoxyalkylene glycol such as diethylene glycol
- alicyclic diol such as cyclohexanedimethanol
- Examples of the comonomer component that can be used in addition to the dicarboxylic acid component and the glycol component include 4-hydroxybenzoic acid, 3-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, 4-carboxy-4′-hydroxybiphenyl, and the like.
- any of the polybutylene terephthalate copolymers obtained by copolymerizing the comonomer components described above can be suitably used as the (A) polybutylene terephthalate resin. Moreover, you may use combining a homopolybutylene terephthalate polymer and a polybutylene terephthalate copolymer as (A) polybutylene terephthalate resin.
- the (B) modified polyethylene terephthalate resin used in the present invention is 1) terephthalic acid or an ester-forming derivative thereof (C 1-6 alkyl ester, acid halide, etc.) 2) ethylene glycol or an ester-forming derivative thereof (acetylated product, etc.), and 3) A polyester resin obtained by polycondensing a modified component essentially containing a dicarboxylic acid other than terephthalic acid or an ester-forming derivative thereof (C 1-6 alkyl ester, acid halide, etc.) according to a known method. is there.
- the effect of improving the adhesion between the metal part and the polybutylene terephthalate resin composition in the metal composite part is obtained by blending the (B) modified polyethylene terephthalate resin with the (A) polybutylene terephthalate resin. It is presumed that the fluidity of the polybutylene terephthalate resin composition is improved, and the shrinkage rate is reduced due to a decrease in the crystallization rate.
- the resin composition easily penetrates into the fine recesses on the surface of the metal part, and solidifies in the recesses after cooling due to a decrease in shrinkage rate. It is presumed that the adhesiveness between the metal part and the polybutylene terephthalate resin composition is improved by making it difficult for the obtained resin to be easily detached from the recess.
- the melting point of the (B) modified polyethylene terephthalate resin is preferably 245 ° C. or less, and particularly preferably 240 ° C. or less.
- the melting point of the modified polyethylene terephthalate resin can be measured using a differential scanning calorimeter (DSC) according to JIS K7121.
- the modified polyethylene terephthalate resin essentially contains a dicarbonyl unit derived from other dicarboxylic acid of terephthalic acid contained in the modifying component or its ester-forming derivative (C 1-6 alkyl ester, acid halide, etc.). .
- the amount of other dicarbonyl units of the terephthaloyl unit contained in the modified polyethylene terephthalate resin is preferably 5 mol% or more and 50 mol% or less, more preferably 7 mol% or more and 30 mol% or less in all dicarbonyl units. 10 mol% or more and 25 mol% or less is particularly preferable.
- Suitable compounds as dicarboxylic acids or ester-forming derivatives thereof contained in the modifying component include C 8-14 fragrances such as isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, and 4,4′-dicarboxydiphenyl ether.
- These dicarboxylic acids can be used alone or in combination of two or more.
- C 8-12 aromatic dicarboxylic acids such as isophthalic acid or ester-forming derivatives thereof, and C 6-12 such as adipic acid, azelaic acid, sebacic acid, etc. More preferred are alkanedicarboxylic acids or ester-forming derivatives thereof.
- the resulting polybutylene terephthalate resin composition is excellent in metal adhesion and mechanical properties
- isophthalic acid or an ester-forming derivative of isophthalic acid (isophthalic acid)
- isophthalic acid or an ester-forming derivative of isophthalic acid (isophthalic acid)
- dimethyl ester isophthalic acid diethyl ester, isophthalic acid dichloride and the like.
- the modified component used for the production of the modified polyethylene terephthalate resin is ethylene glycol and its ester-forming property in addition to a predetermined amount of dicarboxylic acid or its ester-forming derivative, as long as the object of the present invention is not impaired.
- the derivative may contain other glycol components, hydroxycarboxylic acid components, lactone components and the like.
- the amount of repeating units derived from these modified components such as glycol component, hydroxycarboxylic acid component, and lactone component is 30 mol in all repeating units in (B) modified polyethylene terephthalate resin. % Or less is preferable, 25 mol% or less is more preferable, and 20 mol% or less is particularly preferable.
- glycol component contained in the modifying component propylene glycol, trimethylene glycol, 1,4-butanediol, 1,3-butylene glycol, hexamethylene glycol, neopentyl glycol, and 1,3-octanediol C 2- 10 alkylene glycols; polyoxyalkylene glycols such as diethylene glycol, triethylene glycol and dipropylene glycol; cycloaliphatic diols such as cyclohexanedimethanol and hydrogenated bisphenol A; aromatics such as bisphenol A and 4,4′-dihydroxybiphenyl diols, ethylene oxide 2 mol adduct of bisphenol a, propylene oxide 3 mol adduct of bisphenol a, alkylene oxide adducts of C 2-4 of bisphenol a; or which Ester-forming derivatives of the glycol (acetylated, etc.).
- These glycol components can be used alone or in combination of two or more.
- hydroxycarboxylic acid component contained in the modified component examples include aromatic hydroxycarboxylic acids such as 4-hydroxybenzoic acid, 3-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, 4-carboxy-4′-hydroxybiphenyl; Aliphatic hydroxycarboxylic acids such as glycolic acid and hydroxycaproic acid; or ester-forming derivatives of these hydroxycarboxylic acids (C 1-6 alkyl ester derivatives, acid halides, acetylates, etc.). These hydroxycarboxylic acid components can be used alone or in combination of two or more.
- lactone component contained in the modifying component examples include C 3-12 lactones such as propiolactone, butyrolactone, valerolactone, and caprolactone (eg, ⁇ -caprolactone). These lactone components can be used alone or in combination of two or more.
- the amount of the (B) modified polyethylene terephthalate resin used in the molding material for the metal composite part is 10% by mass or more and 50% by mass or less based on the total mass of the (A) polybutylene terephthalate resin and the (B) modified polyethylene terephthalate resin. 15 mass% or more and 45 mass% or less are more preferable, and 20 mass parts or more and 40 mass% or less are especially preferable. (B) If the amount of the modified polyethylene terephthalate resin used is too large, the mechanical properties and chemical resistance of the resulting metal composite part may be impaired. If the amount used is too small, the desired adhesion will be obtained. The improvement effect may not be obtained.
- the metal composite part molding material is often used for applications requiring flame retardancy.
- the metal composite part molding material in addition to (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin, it is preferable to contain (C) a flame retardant.
- the kind of flame retardant is not limited in the range which does not inhibit the objective of this invention, The various flame retardant conventionally used as a flame retardant for thermoplastic resins can be used.
- Examples of suitable (C) flame retardants that can be used in the present invention include (c-1) phosphorus flame retardants and (c-2) bromine flame retardants. (C-1) Phosphorus flame retardant and (c-2) Bromine flame retardant will be described in this order.
- (c-1) Phosphorus flame retardant examples include phosphinates, diphosphinates, phosphate ester compounds, and phosphazene compounds (phosphonitrile compounds).
- phosphinate, diphosphinate, and salt of phosphinic acid condensate of trimer or higher are selected because they are easily available and the resulting polybutylene terephthalate resin composition is excellent in flame retardancy and mechanical properties.
- One or more selected from the above are preferred, and phosphinate and / or diphosphinate are more preferred.
- Examples of the metal that forms a salt of phosphinate, diphosphinate, or a trimer or more phosphinic acid condensate include alkali metals (potassium, sodium, etc.), alkaline earth metals (magnesium, calcium, etc.), transition metals ( Iron, cobalt, nickel, copper, etc.), periodic table group 12 metal (zinc, etc.), periodic table group 13 metal (aluminum, etc.) and the like.
- the said metal salt may contain 1 type of these metals, and may contain it in combination of 2 or more types. Of the metals, alkaline earth metals (magnesium, calcium, etc.) and periodic table group 13 metals (aluminum, etc.) are preferred.
- the valence of the metal forming the salt is not particularly limited, preferably 1 or more and 4 or less, more preferably 2 or more and 4 or less, and particularly preferably 2 or 3.
- the compound represented by the following general formula (1) is preferred as the phosphinate used as the phosphorus flame retardant (c-1) in the present invention, and the compound represented by the formula (2) is preferred as the diphosphinate. preferable.
- R 1 and R 2 are a linear or branched C 1-6 -alkyl group which may contain a phenyl group, hydrogen, and one hydroxyl group. .
- R 1 and R 2 are preferably both ethyl groups.
- R 3 is a linear or branched C 1-10 -alkylene group, arylene group, alkylarylene group or arylalkylene group.
- M is an alkaline earth metal, alkali metal, Zn, Al, Fe, or boron. Among these, Al is preferable.
- m is an integer of 1 to 3
- n is an integer of 1 or 3
- x is 1 or 2.
- phosphinates that can be suitably used in the present invention include calcium dimethylphosphinate, magnesium dimethylphosphinate, aluminum dimethylphosphinate, zinc dimethylphosphinate, calcium ethylmethylphosphinate, ethylmethylphosphine.
- examples thereof include zinc, benzene-1,4- (dimethylphosphinic acid) calcium, and benzene-1,4- (dimethylphosphinic acid) magnesium.
- phosphinates and / or diphosphinates it is particularly preferable to use aluminum diethylphosphinate.
- the shape of the phosphorus-based flame retardant is not particularly limited as long as the object of the present invention is not impaired.
- the shape of the (c-1) phosphorus-based flame retardant is preferably in the form of a powder from the viewpoint that it can be uniformly dispersed in the polybutylene terephthalate resin composition to obtain a good flame retardant effect.
- the amount of the (c-1) phosphorus-based flame retardant used in the present invention is 10 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin.
- 10 parts by mass or more and 80 parts by mass or less are more preferable, and 15 parts by mass or more and 60 parts by mass or less are particularly preferable.
- C-1) When the amount of phosphorus-based flame retardant used is too large, mechanical properties and moldability may be impaired. When the amount used is too small, good flame retardancy cannot be obtained. There is.
- the (c-2) brominated flame retardant used in the present invention is not particularly limited as long as it is an organic compound containing bromine and can make the polymeric material flame retardant, and is commercially available for the polymeric material. Various flame retardants can be used.
- the amount of bromine contained in the brominated flame retardant is preferably 20% by mass or more. If the amount of bromine is too small, it is necessary to use a large amount of flame retardant to obtain the desired flame retardancy, and the mechanical properties of the metal composite part may be impaired.
- the molecular weight of the brominated flame retardant is not particularly limited as long as it does not impair the object of the present invention.
- the brominated flame retardant is a high molecular compound even if it is a low molecular compound. There may be.
- Specific examples of the (c-2) brominated flame retardant suitably used in the present invention include units derived from hexabromobenzene, decabromodiphenyl ether, tetrabromobisphenol A, brominated bisimide compound, and brominated bisphenol A.
- Examples thereof include polycarbonates, diepoxy compounds that are reaction products of brominated bisphenol A and epichlorohydrin, brominated polystyrenes, brominated acrylic polymers, and the like. These (c-2) brominated flame retardants can be used in combination of two or more.
- the amount of the (c-2) brominated flame retardant used in the present invention is 10 parts by mass or more and 100 parts by mass with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin. Part or less, preferably 15 parts by weight or more and 50 parts by weight or less. (C-2) By setting the content of the brominated flame retardant within such a range, a polybutylene terephthalate resin composition having good flame retardancy can be prepared.
- (D) Flame retardant aid in the present invention, when the molding material of the metal composite part is required to have flame retardancy, in addition to (A) polybutylene terephthalate resin, (B) modified polyethylene terephthalate resin, and (C) flame retardant, (D) difficult Preferably it contains a fuel aid.
- the type of flame retardant aid is not limited as long as the object of the present invention is not hindered.
- various flame retardants conventionally used as flame retardants for thermoplastic resins (C) flame retardants
- a suitable flame retardant aid (D) can be selected and used according to the type of the above.
- (D-1) a nitrogen-containing flame retardant aid is preferably used as the flame retardant aid (D-1) c-2)
- (d-2) antimony compounds it is preferable to use (d-2) antimony compounds as (D) flame retardant aids.
- (d-1) the nitrogen-containing flame retardant aid and (d-2) the antimony compound will be described in order.
- the (d-1) nitrogen-containing flame retardant aid used in the present invention is not particularly limited as long as a good flame retardant effect is obtained and does not impair the object of the present invention.
- Various nitrogen-containing compounds can be used.
- Examples of the (d-1) nitrogen-containing flame retardant aid preferably used in the present invention include salts of triazine compounds with cyanuric acid or isocyanuric acid, amino group-containing nitrogen compounds and polyphosphoric acid. Examples include double salts.
- These (d-1) nitrogen-containing flame retardant aids can be used in combination of two or more.
- the flame retardant effect is excellent when combined with the (c-1) phosphorus flame retardant. Therefore, a triazine compound and cyanuric acid or isocyanuric acid are used. And / or a double salt of a nitrogen compound containing an amino group and polyphosphoric acid is more preferable.
- a salt of the triazine compound and cyanuric acid or isocyanuric acid a salt of a triazine compound represented by the following general formula (3) and cyanuric acid or isocyanuric acid is exemplified as a preferable example.
- R 4 and R 5 are a hydrogen atom, an amino group, an aryl group, or a C 1-3 oxyalkyl group, and R 4 and R 5 may be the same or different.
- melamine cyanurate is particularly preferable among the salts of the triazine compound represented by the general formula (3) and cyanuric acid or isocyanuric acid. .
- the nitrogen compound containing an amino group contained in a double salt of a nitrogen compound containing an amino group and polyphosphoric acid has at least one amino group and a heterocyclic ring having at least one nitrogen atom as a ring hetero atom.
- the compound is included, and the heterocycle may have other heteroatoms such as sulfur and oxygen in addition to nitrogen.
- Such nitrogen-containing heterocycles are 5- or 6-membered unsaturated having a plurality of nitrogen atoms such as imidazole, thiadiazole, thiadiazoline, furazane, triazole, thiadiazine, pyrazine, pyrimidine, pyridazine, triazine, and purine as ring constituent atoms.
- Nitrogen-containing heterocycles and the like are included. Of these nitrogen-containing rings, 5- or 6-membered unsaturated nitrogen-containing rings having a plurality of nitrogen atoms as ring constituent atoms are preferred, and triazoles and triazines are particularly preferred. Of the double salts of nitrogen compounds containing amino groups and polyphosphoric acid, melam polyphosphate is preferred.
- the amount of the (d-1) nitrogen-containing flame retardant aid used in the molding material of the metal composite part is 1 part per 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin. It is preferably no less than 50 parts by mass and more preferably no less than 1 part by mass and no greater than 40 parts by mass, and particularly preferably no less than 1 part by mass and no greater than 30 parts by mass.
- the (d-2) antimony compound used in the present invention is not particularly limited as long as it contains antimony and provides a good flame retardant effect, so long as the object of the present invention is not impaired.
- suitable (d-2) antimony compounds include antimony trioxide, antimony tetraoxide, antimony pentoxide, sodium antimonate, and antimony halide. These antimony compounds may be used in combination of two or more, and may be used in combination with other flame retardant aids such as aluminum hydroxide, magnesium hydroxide, zinc sulfide and the like.
- the form of the antimony compound is not particularly limited as long as the resin portion of the metal composite part has good flame retardancy, but is preferably in the form of particles, and is preferably in the form of particles having an average particle size of 0.1 to 10 ⁇ m. It is more preferable that
- the amount of the (d-2) antimony compound used in the present invention is 1 part by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin. It is preferable that it is 5 parts by mass or more and 20 parts by mass or less.
- the molding material for the metal composite part is, in addition to (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin, for the purpose of improving the mechanical properties of the metal composite part. Is preferably included.
- the type of filler (E) used in the present invention is not particularly limited as long as the object of the present invention is not impaired, and various fillers conventionally used as fillers for polymer materials can be used. Either inorganic fillers or organic fillers can be used.
- the shape of the filler (E) used in the present invention is not limited as long as the object of the present invention is not hindered, and any of a fibrous filler, a granular filler, and a plate-like filler can be suitably used. .
- Suitable fibrous fillers used in the present invention include, for example, glass fiber, asbestos fiber, silica fiber, silica-alumina fiber, alumina fiber, zirconia fiber, boron nitride fiber, silicon nitride fiber, boron fiber, potassium titanate fiber, Furthermore, inorganic fibrous materials, such as metal fibrous materials, such as stainless steel, aluminum, titanium, copper, and brass, are mentioned.
- suitable granular fillers used in the present invention include carbon black, graphite, silica, quartz powder, glass beads, milled glass fiber, glass balloon, glass powder, calcium silicate, aluminum silicate, kaolin, talc, clay, Silicates such as diatomaceous earth, wollastonite, iron oxide, titanium oxide, zinc oxide, antimony trioxide, oxides of metals such as alumina, carbonates of metals such as calcium carbonate and magnesium carbonate, calcium sulfate and barium sulfate Examples thereof include metal sulfates, other ferrites, silicon carbide, silicon nitride, boron nitride, various metal powders and the like.
- Suitable plate-like fillers include mica, glass flakes, various metal foils and the like.
- any known glass fiber is preferably used, and the glass fiber diameter, the cross-sectional shape such as a cylinder, a bowl-shaped cross section, an oval cross section, or the length or glass used for manufacturing chopped strands, rovings, etc. It does not depend on the cutting method.
- the type of glass used as a raw material for the glass fiber is not particularly limited, but E glass or corrosion resistant glass containing a zirconium element in the composition is preferably used in terms of quality.
- an organic treatment agent such as a silane compound or an epoxy compound is used for the purpose of improving the interfacial characteristics between the (E) filler and the resin matrix comprising (A) a polybutylene terephthalate resin and (B) a modified polyethylene terephthalate resin.
- a surface-treated filler is preferably used.
- the silane compound and epoxy compound used for such a filler any known compounds can be preferably used, and do not depend on the type of silane compound or epoxy compound used for the surface treatment of the filler in the present invention.
- the amount of the filler (E) used in the present invention is preferably 5 parts by mass or more and 120 parts by mass or less with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate. Part to 100 parts by mass is more preferable, and 15 parts to 80 parts by mass is particularly preferable. (E) When there is too much usage-amount of a filler, the fluidity
- the molding material for the metal composite part preferably contains (F) a fluorine-based resin in addition to (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin.
- F By using a fluorine-type resin, dripping of the molten resin when a polybutylene terephthalate resin composition touches a flame is suppressed, and the metal composite component which is more excellent in a flame retardance can be obtained.
- Suitable (F) fluorine-based resins include tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, hexafluoropropylene, perfluoroalkyl vinyl ether and other fluorine-containing monomers alone or copolymers, and the fluorine-containing monomers Examples thereof include copolymers with copolymerizable monomers such as ethylene, propylene and (meth) acrylate. These (F) fluorine resins can be used alone or in combination of two or more.
- Examples of such (F) fluorine-based resins include homopolymers such as polytetrafluoroethylene, polychlorotrifluoroethylene, and polyvinylidene fluoride, tetrafluoroethylene-hexafluoropropylene copolymers, and tetrafluoroethylene.
- -Copolymers such as perfluoroalkyl vinyl ether copolymer, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer, etc. are exemplified.
- the (F) fluorine-based resin may be a (meth) acrylate resin such as methyl methacrylate / butyl acrylate copolymer, a polyester resin such as polyethylene terephthalate, or a polyamide resin such as polyamide 6. You may use as a mixture with resin.
- the amount of (F) fluorine-based resin used in the present invention is 0.1 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin.
- the molding material for the metal composite part preferably contains (G) an elastomer in addition to (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin. (G) By using an elastomer, the adhesion between the metal part and the polybutylene terephthalate resin composition is particularly excellent.
- Suitable (G) elastomers that can be used in the present invention include polyester elastomers, olefin elastomers, polyvinyl acetate, fluororesins, urethane elastomers, amide elastomers, acrylate elastomers, styrene elastomers, fluorine elastomers, and butadiene. Based elastomers and the like. Furthermore, a core-shell type polymer composed of a core portion made of a rubber-like crosslinked body such as butyl acrylate and a shell portion of a glassy polymer such as methyl acrylate is also used. These elastomers may be modified by a known method such as introduction of a reactive group such as an epoxy group, an isocyanate group or an amino group, crosslinking or grafting.
- a reactive group such as an epoxy group, an isocyanate group or an amino group, crosslinking or grafting.
- the amount of the (G) elastomer used in the present invention is not particularly limited as long as the object of the present invention is not impaired.
- the amount of the elastomer (G) used is preferably 1 part by mass or more and 100 parts by mass or less, preferably 3 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the total amount of (A) polybutylene terephthalate resin and (B) modified polyethylene terephthalate resin. More preferred is 5 parts by mass or less and particularly preferred is 5 parts by mass or more and 30 parts by mass or less. (G) By making the usage-amount of an elastomer into this range, the adhesiveness of a metal component and a polybutylene terephthalate resin composition can be made especially excellent.
- Elastomers preferably used in the present invention are olefin elastomers, styrene elastomers, core shell elastomers, and polyester elastomers.
- the olefin elastomer, the styrene elastomer, the core shell elastomer, and the polyester elastomer will be described in order.
- the olefin-based elastomer is a copolymer containing ethylene and / or propylene as components, and specifically includes an ethylene-propylene copolymer, an ethylene-butene copolymer, an ethylene-octene copolymer, an ethylene- Examples include, but are not limited to, propylene-butene copolymers, ethylene-propylene-diene copolymers, ethylene-ethyl acrylate copolymers, ethylene-vinyl acetate copolymers, ethylene-glycidyl methacrylate copolymers. It is not a thing.
- olefin elastomers (I) an ethylene-unsaturated carboxylic acid alkyl ester copolymer or (II) an olefin copolymer comprising an ⁇ -olefin and an ⁇ , ⁇ -unsaturated glycidyl ester,
- a graft copolymer in which one or two or more polymers or copolymers composed of repeating units represented by the following general formula (4) are chemically bonded in a branched or crosslinked structure can also be used.
- R 6 is hydrogen or a lower alkyl group
- X is —COOCH 3, —COOC 2 H 5 , —COOC 4 H 9 , —COOCH 2 CH (C 2 H 5 ) C 4 H 9 , —C 6 H 5 , -Represents one or more groups selected from CN
- styrene-based elastomer used as the elastomer (G) in the present invention, a block copolymer composed of a polystyrene block and an elastomer block having a polyolefin structure is preferably used.
- styrene-based elastomers include styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene / propylene-styrene block copolymer (SEPS), and styrene-ethylene / butylene-styrene block copolymer (SEBS). And styrene-ethylene / ethylene / propylene-styrene block copolymer (SEEPS).
- SIS styrene-isoprene-styrene block copolymer
- SEPS styrene-ethylene / propylene-styrene block copo
- the core-shell elastomer used as the elastomer (G) in the present invention has a multilayer structure composed of a core layer (core portion) and a shell layer covering at least a part of the surface of the core layer.
- the core layer of the core-shell elastomer is preferably composed of a rubber component (soft component), and acrylic rubber is suitably used as the rubber component.
- the rubber component used for the core layer preferably has a glass transition temperature (Tg) of less than 0 ° C. (eg ⁇ 10 ° C. or less), and ⁇ 20 ° C. or less (eg ⁇ 180 ° C. or more and ⁇ 25 ° C. or less). More preferably, it is ⁇ 30 ° C. or lower (for example, ⁇ 150 ° C. or higher and ⁇ 40 ° C. or lower).
- the acrylic rubber used as the rubber component is preferably a polymer obtained by polymerizing an acrylic monomer such as alkyl acrylate as a main component.
- the alkyl acrylate used as the monomer for the acrylic rubber is preferably a C 1 to C 12 alkyl ester of acrylic acid such as butyl acrylate, and more preferably a C 2 to C 6 alkyl ester of acrylic acid.
- the acrylic rubber may be a homopolymer of an acrylic monomer or a copolymer.
- the acrylic rubber may be a copolymer of acrylic monomers or a copolymer of an acrylic monomer and another unsaturated bond-containing monomer.
- the acrylic rubber may be a copolymer of a crosslinkable monomer.
- the polyester elastomer used as the elastomer (G) is not particularly limited as long as the flexural modulus is 1000 MPa or less, preferably 700 MPa or less, and various types can be used. Either can be used.
- the polyether-type polyester elastomer is a polyester elastomer having an aromatic polyester unit as a hard segment and a polyester composed of a polymer of oxyalkylene glycol and a dicarboxylic acid as a soft segment.
- the aromatic polyester unit in the hard segment is a polycondensate of a dicarboxylic acid compound and a dihydroxy compound, a polycondensate of an oxycarboxylic acid compound, or a polycondensate of a dicarboxylic acid compound, a dihydroxy compound, and an oxycarboxylic acid compound. It is a derived unit.
- Specific examples of the hard segment include units derived from polybutylene terephthalate.
- the soft segment is introduced into the polyester elastomer by a compound formed by polycondensation of a polyalkylene ether and a dicarboxylic acid compound.
- Specific examples of the soft segment include a unit derived from an ester compound of polyoxytetramethylene glycol derived from tetrahydrofuran.
- polyether type elastomer a synthesized one or a commercially available one may be used.
- examples of commercially available polyether type elastomers include Perprene P-30B, P-70B, p-90B, P-208B manufactured by Toyobo Co., Ltd .; Hytrel 4057, 4767 manufactured by Toray DuPont Co., Ltd. 6347, 7247; Light Flex 655 manufactured by Chicona Corporation.
- the polyester type elastomer is a polyester elastomer having an aromatic polyester unit as a hard segment and an amorphous polyester unit as a soft segment.
- the aromatic polyester unit in the hard segment is the same as that of the polyether type elastomer.
- Examples of the amorphous polyester unit in the soft segment include a unit derived from a ring-opening polymer of lactone or a polycondensate of an aliphatic dicarboxylic acid and an aliphatic diol.
- the polyester type elastomer may be a synthesized one or a commercially available one.
- Examples of commercially available polyester elastomers include Perprene S-1002 and S-2002 manufactured by Toyobo Co., Ltd.
- the molding material of the metal composite part includes (A) a polybutylene terephthalate resin and (B) a modified polyethylene terephthalate resin, (C) a flame retardant, (D) a flame retardant aid, ( It may contain other additives such as E) filler, (F) fluororesin, and (G) elastomer.
- additives are not particularly limited as long as the object of the present invention is not impaired, and various additives conventionally used for various resins can be used.
- Specific examples of other additives include antioxidants, heat stabilizers, ultraviolet absorbers, antistatic agents, dyes, pigments, lubricants, mold release agents, crystallization accelerators, crystal nucleating agents, and the like. Can be mentioned.
- a phosphorus-based stabilizer for the purpose of improving thermal stability and suppressing transesterification between the polybutylene terephthalate resin and the modified polyethylene terephthalate resin.
- the phosphorus stabilizer is not particularly limited as long as it does not impair the object of the present invention, and various known phosphorus-containing compounds used as stabilizers for polymer materials can be used. Examples of the phosphorus stabilizer suitably used in the present invention include phosphate ester compounds, phosphite ester compounds, phosphonate ester compounds, and phosphate metal salt compounds. These phosphorus stabilizers can be used in combination of two or more.
- the total content of the components (A) to (G) in the molding material of the metal part is preferably 70% by mass or more, more preferably 80% by mass or more, and 90% by mass in the molding material.
- the above is particularly preferable, and 99% by mass or more is most preferable.
- the material of the metal part used in the present invention is not particularly limited.
- a metal such as aluminum, copper, iron, magnesium, nickel, or titanium; an alloy such as aluminum alloy, phosphor bronze, or stainless steel; Etc.
- the material which comprises a metal component is not limited to a metal, What is necessary is just a component which has a metal layer on the surface. Examples of components having a metal layer on the surface include components plated with metals such as nickel, chromium, and gold.
- the shape of the metal part is not particularly limited as long as the metal part and the molding material of the metal composite part can be combined, and various shape parts such as a plate shape, a cylindrical shape, and a rod shape can be used.
- the metal parts used in the present invention include various bosses for screwing, ribs for reinforcement, insertion holes for attaching parts such as gears, and the like necessary for assembling final products such as electric and electronic products. You may have a component.
- the shape of the portion where the metal part and the molding material of the metal composite part come into contact with each other is not particularly limited, and an arbitrary shape such as a quadrangle, a circle, or an ellipse may be selected.
- the shape of the surface where the metal part and the molding material of the metal composite part come into contact is not particularly limited, and may be a flat surface or a curved surface.
- the surface on which the metal part and the molding material of the metal composite part come into contact is not limited to a single plane or curved surface, and may have a convex portion or a concave portion inside the plane or curved surface of the metal plate.
- the area of the part where the metal part and the molding material of the metal composite part come into contact is not particularly limited.
- At least a part of the metal part that is in contact with the molding material of the metal composite part is roughened in advance.
- the method of roughening treatment for forming fine irregularities on the surface of the metal part used in the present invention is not particularly limited, and a conventional metal roughening treatment method according to the metal material, shape, required characteristics, etc. Can be selected as appropriate.
- Examples of the treatment for forming fine irregularities on the metal surface include chemical etching, alumite treatment on aluminum, physical treatment such as liquid honing and sandblasting, and processing by electroless plating.
- Chemical etching is a method of treating a metal surface with a chemical or the like, and various methods are known depending on the type of metal and the purpose of treatment, and are used in various industrial fields.
- the chemical etching method is not particularly limited, and any of conventional methods can be selected. Specific examples of the chemical etching method include methods described in, for example, JP-A-10-96088 and JP-A-10-56263.
- the material of the metal part is aluminum or an aluminum alloy
- a method of treating the surface of the metal part with ammonia, hydrazine, a water-soluble amine compound or the like is preferable.
- those processed by the method described in JP-A-2006-001216 can be used.
- alumite treatment which is a general surface treatment method applied to aluminum
- an aluminum is electrolyzed with an anode using an acid to form a porous of the order of several tens of nanometers to several tens of micrometers.
- TRI treatment or the like is known as a method for forming a convex portion.
- the metal parts And the polybutylene terephthalate resin composition can be made more excellent in adhesion.
- the metal composite component of the present invention is manufactured by supplying the molding material of the metal composite component with a molding machine.
- the molding machine used to manufacture the metal composite part is not particularly limited as long as a composite molded body of the metal part and the polybutylene terephthalate resin composition can be formed.
- Conventional metal composite parts such as injection molding machines, extrusion molding machines, compression molding machines, etc.
- Various molding machines used for molding can be used. It is preferable to use an injection molding machine in terms of ease of installation of metal parts in a mold, simplicity of an apparatus, and excellent productivity of metal composite parts.
- Mold temperature is not particularly limited when molding metal composite parts.
- a high temperature for example, a temperature exceeding 100 ° C. is preferable.
- the mold temperature is preferably 100 ° C. or lower, more preferably 50 ° C. or higher and 100 ° C. or lower, because the cooling time is short and the molding cycle can be shortened.
- the temperature of the mold can be controlled by a temperature control apparatus using hot water as a heating medium, which is generally used as a mold temperature control apparatus. There is an advantage that preparation becomes unnecessary and manufacturing work of the metal composite part is safe.
- the molding material of the metal composite part is not particularly limited as long as it contains a predetermined amount of the materials (A) to (H), and any of a polybutylene terephthalate resin mixture and a polybutylene terephthalate resin composition can be used.
- the polybutylene terephthalate resin mixture include (1) (A) a polybutylene terephthalate resin composition obtained by melt-kneading (A) a polybutylene terephthalate resin and a predetermined amount of the components (C) to (H).
- the molding material for the metal composite part used in the present invention it is more preferable to use a polybutylene terephthalate resin composition because it is easy to produce a homogeneous metal composite part.
- metal composite parts The metal composite part of the present invention obtained by the materials and methods described above is excellent in adhesion between the metal part and the polybutylene terephthalate resin composition. For this reason, the metal composite part of this invention is used suitably, for example as a part of various electrical / electronic products.
- suitable electrical / electronic products using metal composite parts obtained by the method of the present invention include mobile phones, digital cameras, personal digital assistants (PDAs), portable game terminals, portable terminals such as electronic book readers, notebooks, etc.
- OA equipment such as computers such as copy-type personal computers and desktop personal computers, copiers, printers, and facsimiles.
- the metal composite part of the present invention is particularly suitable as a casing of a mobile terminal, a computer, an OA device, etc., because a metal and a polybutylene terephthalate resin composition are combined to be excellent in strength, lightness, design and the like. Used for.
- Examples 1 to 5 and Comparative Examples 1 to 6 In Examples 1 to 5 and Comparative Examples 1 to 6, the following materials were used as components of the polybutylene terephthalate resin composition.
- the melting point was measured according to JIS K7121 at a heating rate of 10 ° C / min using a DSC Q1000 manufactured by TA Instruments.
- A1 Polybutylene terephthalate resin (made by Wintech Polymer Co., Ltd.) with an intrinsic viscosity of 0.69 dL / g
- B1 Modified polyethylene terephthalate resin (manufactured by Bell Polyester Products, modified with 12 mol% of isophthaloyl units in all dicarbonyl units, melting point 232 ° C., intrinsic viscosity 0.80 dL / g)
- B′1 Polyethylene terephthalate resin (manufactured by SK Chemical Co., melting point 258 ° C., intrinsic viscosity 0.76 dL / g)
- C1 Aluminum diethylphosphinate (phosphorous flame retardant, manufactured by Clariant, Exolit OP 1230)
- C2 Aluminum diethylphosphinate (phosphorous flame retardant, manufactured by Clariant, Exolit OP 1230)
- Table 1 The components shown in Table 1 were dry blended in the proportions (parts by mass) shown in Table 1, and using a twin screw extruder (TEX-30 ⁇ manufactured by Nippon Steel Co., Ltd.), the cylinder temperature was 260 ° C., the discharge rate Pellets of polybutylene terephthalate resin composition were prepared by melt-kneading under conditions of 15 kg / hr and screw rotation speed of 130 rpm. Test pieces were prepared using the pellets obtained in the examples and comparative examples and tested for adhesion according to the following method. Table 1 shows the test results regarding the adhesion of the polybutylene terephthalate resin compositions of Examples and Comparative Examples.
- test pieces (0.8 mm thickness) were subjected to UL94 standard vertical combustion test by Underwriters Laboratories.
- flame retardants such as phosphorus-based flame retardants and bromine-based flame retardants, nitrogen-containing flame retardant aids, antimony compounds, and the like with respect to polybutylene terephthalate resins.
- the polybutylene terephthalate resin composition which is excellent in a flame retardance is obtained by using a fuel adjuvant.
- a metal part and a polybutylene terephthalate resin can be used even if a flame retardant or a flame retardant aid is used. It can be seen that a metal composite part having excellent flame retardancy can be obtained without impairing the adhesion to the composition.
- Comparative Examples 1, 4, and 5 if a modified polyethylene terephthalate resin is not added to the polybutylene terephthalate resin, a metal composite part having particularly excellent adhesion between the metal part and the polybutylene terephthalate resin composition is obtained. I can't understand. Further, according to Comparative Examples 2, 3, and 6, even when an unmodified polyethylene terephthalate resin is added to the polybutylene terephthalate resin, the metal composite having particularly excellent adhesion between the metal part and the polybutylene terephthalate resin composition It turns out that parts cannot be obtained.
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Abstract
Description
前記(B)変性ポリエチレンテレフタレート樹脂が、全ジカルボニル単位中、テレフタロイル単位の他のジカルボニル単位を5モル%以上50モル%以下含み、
前記(B)変性ポリエチレンテレフタレート樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計質量に対して10質量%以上50質量%以下である、金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
前記(C)難燃剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して、10質量部以上100質量部以下である(3)記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
(D)難燃助剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して1質量部以上50質量部以下である、(4)から(6)いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
(D)難燃助剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して1質量部以上50質量部以下である、(9)記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
(E)充填材の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して5質量部以上120質量部以下である、(1)から(10)いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
(F)フッ素系樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して0.1質量部以上5質量部以下である、(1)から(11)いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
(G)エラストマーの含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して1質量部以上100質量部以下である、(1)から(12)いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
前記(B)変性ポリエチレンテレフタレート樹脂が、全ジカルボニル単位中、テレフタロイル単位の他のジカルボニル単位を5モル%以上50モル%以下含み、
前記(B)変性ポリエチレンテレフタレート樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計質量に対して10質量%以上50質量%以下である成形材料を、成形機により金属部品が載置された金型に供給する、金属複合部品の製造方法。
まず、金属複合部品の成形材料について説明する。本発明において金属複合部品の製造に使用される成形材料は、(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂に対して、所望により、(C)難燃剤、(D)難燃助剤、(E)充填材、(F)テトラフルオロエチレン重合体、(G)エラストマー、及び(H)その他の添加剤からなる群より選択される1種以上の成分を配合されたものである。
本発明において用いる(A)ポリブチレンテレフタレート樹脂は、少なくともテレフタル酸又はそのエステル形成性誘導体(C1-6のアルキルエステルや酸ハロゲン化物等)を含むジカルボン酸成分と、少なくとも炭素原子数4のアルキレングリコール(1,4-ブタンジオール)又はそのエステル形成性誘導体(アセチル化物等)を含むグリコール成分とを重縮合して得られるポリブチレンテレフタレート系樹脂である。(A)ポリブチレンテレフタレート樹脂はホモポリブチレンテレフタレート樹脂に限らず、ブチレンテレフタレート単位を60モル%以上(特に75モル%以上95モル%以下)含有する共重合体であってもよい。
本発明において用いる(B)変性ポリエチレンテレフタレート樹脂は、
1)テレフタル酸又はそのエステル形成性誘導体(C1-6アルキルエステルや酸ハロゲン化物等)、
2)エチレングリコール又はそのエステル形成性誘導体(アセチル化物等)、及び、
3)テレフタル酸以外の他のジカルボン酸又はそのエステル形成性誘導体(C1-6アルキルエステルや酸ハロゲン化物等)を必須に含む変性成分
を、公知の方法に従って重縮合して得られるポリエステル樹脂である。
本発明において金属複合部品の成形材料は、難燃性を要求される用途に用いられることも多い。その場合、(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂に加えて、(C)難燃剤を含むのが好ましい。(C)難燃剤の種類は、本発明の目的を阻害しない範囲で限定されず、従来から熱可塑性樹脂用の難燃剤として使用される種々の難燃剤を用いることができる。
(c-1)リン系難燃剤としては、フォスフィン酸塩、ジフォスフィン酸塩、リン酸エステル化合物、及びフォスファゼン化合物(フォスホニトリル化合物)等が挙げられる。中でも、入手が容易であり、得られるポリブチレンテレフタレート樹脂組成物が難燃性及び機械的特性に優れることからフォスフィン酸塩、ジフォスフィン酸塩、及び3量体以上のフォスフィン酸縮合物の塩から選択される1種以上が好ましく、フォスフィン酸塩、及び/又は、ジフォスフィン酸塩がより好ましい。
また、R3は、直鎖又は分枝鎖のC1-10-アルキレン基、アリーレン基、アルキルアリーレン基又はアリールアルキレン基である。
また、Mは、アルカリ土類金属、アルカリ金属、Zn、Al、Fe、ホウ素である。これらの中でもAlが好ましい。
mは、1から3の整数であり、nは、1又は3の整数であり、且つ、xは、1又は2である。
本発明において用いる、(c-2)臭素系難燃剤は、臭素を含有する有機化合物であって、高分子材料を難燃化できるものであれば特に限定されず、高分子材料用に市販されている種々の難燃剤を使用することができる。
本発明において、金属複合部品の成形材料は、難燃性を要求される場合、(A)ポリブチレンテレフタレート樹脂、(B)変性ポリエチレンテレフタレート樹脂、及び(C)難燃剤に加え、(D)難燃助剤を含むのが好ましい。(D)難燃助剤の種類は、本発明の目的を阻害しない範囲で限定されず、従来から熱可塑性樹脂用の難燃剤として使用される種々の難燃剤の中から、(C)難燃剤の種類に応じて好適な(D)難燃助剤を選択して使用できる。
本発明において用いる(d-1)含窒素難燃助剤は、良好な難燃効果が得られ、本発明の目的を阻害しない範囲で特に限定されず、難燃助剤として使用される公知の種々の含窒素化合物を使用することができる。本発明において好適に使用される(d-1)含窒素難燃助剤の例としては、トリアジン系化合物とシアヌール酸もしくはイソシアヌール酸との塩、アミノ基を含有する窒素化合物とポリリン酸との複塩等が挙げられる。これらの(d-1)含窒素難燃助剤は2種以上を組み合わせて用いることができる。
本発明において用いる(d-2)アンチモン化合物は、アンチモンを含有し、良好な難燃効果が得られるものであれば、本発明の目的を阻害しない範囲で特に限定されない。好適な(d-2)アンチモン化合物の具体例として、三酸化アンチモン、四酸化アンチモン、五酸化アンチモン、アンチモン酸ナトリウム、ハロゲン化アンチモン等が挙げられる。これらのアンチモン化合物は2種以上を組み合わせて用いてもよく、水酸化アルミニウム、水酸化マグネシウム、硫化亜鉛等の他の難燃助剤と組み合わせて用いてもよい。
本発明において、金属複合部品の成形材料は、金属複合部品の機械的特性の改良の目的で、(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂に加えて、(E)充填材を含むのが好ましい。本発明において用いる(E)充填材の種類は、本発明の目的を阻害しない範囲で特に限定されず、従来から高分子材料の充填材として使用される種々の充填材を使用することができ、無機充填材及び有機充填材のいずれも使用できる。また、本発明で用いる(E)充填材の形状は、本発明の目的を阻害しない範囲で限定されず、繊維状充填材、粉粒状充填材、及び板状充填材のいずれも好適に使用できる。
本発明において、金属複合部品の成形材料は、(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂に加えて、(F)フッ素系樹脂を含むのが好ましい。(F)フッ素系樹脂を用いることにより、ポリブチレンテレフタレート樹脂組成物が火炎に触れる際の溶融樹脂の滴下が抑制され、より難燃性に優れる金属複合部品を得ることができる。
本発明において、金属複合部品の成形材料は、(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂に加えて、(G)エラストマーを含むのが好ましい。(G)エラストマーを用いることにより、金属部品とポリブチレンテレフタレート樹脂組成物との密着性が特に優れたものとなる。
オレフィン系エラストマーとして好ましいものは、エチレン及び/又はプロピレンを成分として含む共重合体であり、具体的にはエチレン-プロピレン共重合体、エチレン-ブテン共重合体、エチレン-オクテン共重合体、エチレン-プロピレン-ブテン共重合体、エチレン-プロピレン-ジエン共重合体、エチレン-エチルアクリレート共重合体、エチレン-酢酸ビニル共重合体、エチレン-グリシジルメタクリレート共重合体等が挙げられるが、これらに限定されるものではない。さらには、オレフィン系エラストマーの中でも、(I)エチレン-不飽和カルボン酸アルキルエステル共重合体又は(II)α-オレフィンとα,β-不飽和酸のグリシジルエステルからなるオレフィン系共重合体に、下記一般式(4)で示される繰返し単位で構成された重合体又は共重合体の一種又は二種以上が分岐又は架橋構造的に化学結合したグラフト共重合体も利用することができる。(但し、R6は水素又は低級アルキル基、Xは-COOCH3、-COOC2H5、-COOC4H9、-COOCH2CH(C2H5)C4H9、-C6H5、-CNから選ばれた一種又は二種以上の基を示す)
本発明において(G)エラストマーとして用いるスチレン系エラストマーとしては、ポリスチレンブロックとポリオレフィン構造のエラストマーブロックとで構成されたブロック共重合体が好適に用いられる。スチレン系エラストマーの具体例としては、スチレン-イソプレン-スチレンブロック共重合体(SIS)、スチレン-エチレン・プロピレン-スチレンブロック共重合体(SEPS)スチレン-エチレン・ブチレン-スチレンブロック共重合体(SEBS)、スチレン-エチレン・エチレン/プロピレン-スチレンブロック共重合体(SEEPS)等が挙げられる。
本発明において(G)エラストマーとして用いるコアシェル系エラストマーは、コア層(コア部)と、このコア層の表面の少なくとも一部を被覆するシェル層とで構成される多層構造を有する。コアシェル系エラストマーのコア層は、ゴム成分(軟質成分)で構成されるのが好ましく、ゴム成分としてはアクリル系ゴムが好適に用いられる。コア層に用いるゴム成分は、ガラス転移温度(Tg)が0℃未満(例えば-10℃以下)であるのが好ましく、-20℃以下(例えば-180℃以上-25℃以下)であるのがより好ましく、-30℃以下(例えば-150℃以上-40℃以下)であるのが特に好ましい。
本発明において(G)エラストマーとして用いるポリエステル系エラストマーは、曲げ弾性率が1000MPa以下、好ましくは700MPa以下のものであれば特に制限されず、種々のものを使用でき、ポリエーテル型、又はポリエステル型のいずれも使用できる。
本発明において、金属複合部品の成形材料には、目的に応じて(A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂とともに、(C)難燃剤、(D)難燃助剤、(E)充填材、(F)フッ素系樹脂、及び(G)エラストマーの他の添加剤を含んでいてもよい。
次いで、金属複合部品の製造方法について、金属部品、成形方法の順に説明する。
本発明で使用する金属部品の材料は特に制限されず、例えば、アルミニウム、銅、鉄、マグネシウム、ニッケル、チタン等の金属;アルミニウム合金、燐青銅、ステンレス等の合金;異種の金属の貼合わせ体等が挙げられる。また、金属部品を構成する材料は金属に限定されず、表面に金属層を有する部品であればよい。表面に金属層を有する部品の例としては、ニッケル、クロム、金等の金属によりメッキ処理された部品等が挙げられる。
以上説明した金属部品を金型に載置した後、成形機により金属複合部品の成形材料を供給することにより、本発明の金属複合部品が製造される。金属複合部品の製造に用いる成形機は、金属部品とポリブチレンテレフタレート樹脂組成物との複合成形体が形成できれば特に限定されず、射出成形機、押出し成形機、圧縮成形機等の従来金属複合部品の成形に使用される種々の成形機を使用できる。金属部品の金型への設置の容易さや装置の簡便さ、金属複合部品の生産性に優れる点で射出成形機を用いるのが好ましい。
以上説明した材料及び方法により得られる本発明の金属複合部品は、金属部品とポリブチレンテレフタレート樹脂組成物との密着性に優れるものである。このため、本発明の金属複合部品は、例えば、種々の電気・電子製品の部品として好適に使用される。本発明の方法により得られた金属複合部品を用いる好適な電気・電子製品の例としては、携帯電話機、デジタルカメラ、携帯情報端末(PDA)、携帯ゲーム端末、電子書籍リーダー等の携帯端末、ノート型パーソナルコンピュータ、卓上型パーソナルコンピュータ等のコンピュータ、複写機、プリンタ、ファクシミリ等のOA機器が挙げられる。本発明の金属複合部品は、金属とポリブチレンテレフタレート樹脂組成物とが複合化され、強度、軽量性、及び意匠性等に優れるための、携帯端末、コンピュータ、OA機器等の筐体として特に好適に使用される。
実施例1から5、及び比較例1から6において、ポリブチレンテレフタレート樹脂組成物の成分として、以下の材料を用いた。
A1:固有粘度0.69dL/gのポリブチレンテレフタレート樹脂(ウィンテックポリマー株式会社製)
〔(B)変性ポリエチレンテレフタレート樹脂〕
B1:変性ポリエチレンテレフタレート樹脂(ベルポリエステルプロダクツ社製、全ジカルボニル単位中12モル%のイソフタロイル単位で変性、融点232℃、固有粘度0.80dL/g)
〔(B’)非変性ポリエチレンテレフタレート樹脂〕
B’1:ポリエチレンテレフタレート樹脂(SKケミカル社製、融点258℃、固有粘度0.76dL/g)
〔(C)難燃剤〕
C1:ジエチルフォスフィン酸アルミニウム(リン系難燃剤、Clariant社製、Exolit OP 1230)
C2:臭素化ポリカーボネート(臭素系難燃剤、帝人化成株式会社製、FG-7500)
〔(D)難燃助剤〕
D1:メラミンシアヌレート(窒素系難燃助剤、DSM社製、Melapure50)
D2:三酸化アンチモン(アンチモン化合物、日本精鉱株式会社製、PATOX-M)
〔(E)充填材〕
E1:ガラス繊維(日東紡績株式会社製、CS3J648S)
〔(F)フッ素系樹脂〕
F1:テトラフルオロエチレン重合体(三井・デュポンフロロケミカル株式会社製、PTFE850A)
〔(G)エラストマー〕
G1:コアシェル系エラストマー(ローム・アンド・ハース・ジャパン株式会社製、パラロイド ELX2311)
〔試験片作成〕
以下、密着性の評価方法について図1及び図2を参照しながら説明する。射出成形機(ソディック社製、TR-40VR)を用いて、温水を加熱媒体に用いる温度調節装置により金型温度を80℃に設定して、金型内に金属部品を載置した後に、以下の条件にて、密着性評価用の試験片を射出成形した。なお、金属部品は、ケミカルエッチングの類として知られる“大成プラス社のNMT処理”を施し表面を粗化されたアルミニウム(A1050)の板を用いた。密着性評価用の試験片の形状は、図1に示す通りであり、20mm×50mm×厚さ1.6mmのアルミニウム板2とポリブチレンテレフタレート樹脂組成物1とが、10mm×5mmの長方形の接触面を介して複合化されたものを用いた。
まず、試験片の、アルミニウム板2とポリブチレンテレフタレート樹脂組成物1との接触面の周囲のバリを除去した後、図2に示すように、試験片固定用治具4の凹部に試験片のアルミニウム板2部分を固定した。次いで、押し治具3を1mm/分の速度で降下させて試験のポリブチレンテレフタレート樹脂組成物1を押し下げ、ポリブチレンテレフタレート樹脂組成物1とアルミニウム板2とを剥離させた時の最大荷重(N)を測定し、破壊の形態を観察した。また、密着性の評価には、(株)オリエンテック社製、テンシロンUTA-50KNを用いた。
実施例3から5、及び比較例4~6で得られたポリブチレンテレフタレート樹脂組成物に関して、試験片(0.8mm厚み)について、アンダーライターズ・ラボラトリーズのUL94規格垂直燃焼試験により実施した。
2 アルミニウム板
3 押し治具
4 試験片固定用治具
Claims (21)
- (A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂を含み、
前記(B)変性ポリエチレンテレフタレート樹脂が、全ジカルボニル単位中、テレフタロイル単位の他のジカルボニル単位を5モル%以上50モル%以下含み、
前記(B)変性ポリエチレンテレフタレート樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計質量に対して10質量%以上50質量%以下である、金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - 前記(B)変性ポリエチレンテレフタレート樹脂の融点が245℃以下である、請求項1記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- さらに、(C)難燃剤を含む請求項1又は2記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- 前記(C)難燃剤が、フォスフィン酸塩、ジフォスフィン酸塩、及び、3量体以上のフォスフィン酸縮合物の塩からなる群より選択される1種以上のリン系難燃剤であり、
前記(C)難燃剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して、10質量部以上100質量部以下である請求項3記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - 前記リン系難燃剤が、下記一般式(1)で表されるフォスフィン酸塩、及び/又は、下記一般式(2)で表されるジフォスフィン酸塩である、請求項4記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- 前記リン系難燃剤が、ジエチルフォスフィン酸アルミニウムである、請求項5記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- 前記含窒素難燃助剤がメラミンシアヌレートである、請求項7記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- 前記(C)難燃剤が臭素系難燃剤であり、(C)難燃剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して10質量部以上100質量部以下である、請求項1から3いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。
- さらに、アンチモン系化合物を(D)難燃助剤として含有し、
(D)難燃助剤の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して1質量部以上50質量部以下である、請求項9記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - さらに、(E)充填材を含有し、
(E)充填材の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して5質量部以上120質量部以下である、請求項1から10いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - さらに、(F)フッ素系樹脂を含有し、
(F)フッ素系樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して0.1質量部以上5質量部以下である、請求項1から11いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - さらに、(G)エラストマーを含有し、
(G)エラストマーの含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計量100質量部に対して1質量部以上100質量部以下である、請求項1から12いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物。 - 請求項1から13いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物と、金属部品とからなる金属複合部品。
- 前記金属部品が表面粗化処理されたものである、請求項14記載の金属複合部品。
- パーソナルコンピュータ部品、携帯端末部品、又はOA機器部品である、請求項14又は15記載の金属複合部品。
- (A)ポリブチレンテレフタレート樹脂、及び(B)変性ポリエチレンテレフタレート樹脂を含み、
前記(B)変性ポリエチレンテレフタレート樹脂が、全ジカルボニル単位中、テレフタロイル単位の他のジカルボニル単位を5モル%以上50モル%以下含み、
前記(B)変性ポリエチレンテレフタレート樹脂の含有量が、前記(A)ポリブチレンテレフタレート樹脂及び前記(B)変性ポリエチレンテレフタレート樹脂の合計質量に対して10質量%以上50質量%以下である成形材料を、成形機により金属部品が載置された金型に供給する、金属複合部品の製造方法。 - 前記成形材料が、請求項1から13いずれか記載の金属複合部品成形用のポリブチレンテレフタレート樹脂組成物である、請求項17記載の金属複合部品の製造方法。
- 前記金属部品が、表面粗化処理されたものである請求項17又は18記載の金属複合部品の製造方法。
- 前記金型の温度が100℃以下である、請求項17から19いずれか記載の金属複合部品の製造方法。
- 請求項17から20いずれか記載の成形方法により得られた、金属複合部品。
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