WO2007108202A1 - 難燃性ポリアミド樹脂組成物および成形品 - Google Patents
難燃性ポリアミド樹脂組成物および成形品 Download PDFInfo
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- WO2007108202A1 WO2007108202A1 PCT/JP2007/000207 JP2007000207W WO2007108202A1 WO 2007108202 A1 WO2007108202 A1 WO 2007108202A1 JP 2007000207 W JP2007000207 W JP 2007000207W WO 2007108202 A1 WO2007108202 A1 WO 2007108202A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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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
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
- C08L71/126—Polyphenylene oxides modified by chemical after-treatment
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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
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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
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-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
- C08K5/00—Use of organic ingredients
- C08K5/0091—Complexes with metal-heteroatom-bonds
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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
- C08K5/34928—Salts
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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
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
Definitions
- the present invention relates to a flame retardant polyamide resin composition and a molded article. Specifically, the extrusion processability and molding processability are good, and the mold deposit during the molding process has little flame-out bleed-out, Further, the present invention relates to a flame retardant polyamide resin composition that does not generate highly corrosive hydrogen halide gas during combustion, has extremely high flame retardancy, and is excellent in mechanical and electrical properties, and a molded product comprising the same. Background art
- polyamide resins have been used in fields such as automobile parts, mechanical parts, and electrical / electronic parts because they are excellent in mechanical strength and heat resistance.
- the required level for flame retardancy is increasing, and higher flame retardancy is required than the self-extinguishing properties inherently possessed by polyamide resins.
- a number of studies have been conducted on the advancement of flame retardancy levels, specifically materials that meet the V_0 level of the Underwriters Laboratories UL 94 standard, especially compositions containing inorganic fillers.
- Patent Document 1 A polyamide resin composition comprising melamine cyanurate and / or a derivative thereof and an inorganic filler and having good mechanical properties, thermal properties, and flame retardancy has been proposed ( Patent Document 1).
- the flame retardancy is UL94 V-2 level, and no resin composition with higher flame retardancy, specifically V-1 level or higher, has been proposed.
- a flameproof thermoplastic molding material having excellent mechanical properties and flameproofing properties has been proposed, in which melamine cyanurate and glass fibers having a certain glass fiber length distribution, especially short glass fibers, are blended.
- Patent Document 2 A flameproof thermoplastic molding material having excellent mechanical properties and flameproofing properties.
- a first component (a phosphinate salt represented by a specific structure or a diphosphinate salt represented by a specific structure or a component containing these polymers) and a second component (of melamine) Flame retardants and thermoplastic polymers containing condensation products and / or reaction products of melamine and phosphoric acid and / or reaction products of melamine and phosphoric acid and / or mixtures thereof) It has been proposed (Patent Document 3). Specifically, a flame retardant composed of phosphinate (first component) and melamine polyphosphate (second component) was blended with 30% by weight glass fiber reinforced polyamide resin. Flammability Polyamide resin composition that satisfies UL 94 standard _ 0 level (thickness 1 1 6 inches) has been proposed. No mention is made of other characteristics such as moldability, mechanical properties, and electrical properties of the polyamide resin composition.
- the above flame retardant (containing 1 to 30% by weight of the first component and the second component, respectively);
- a flame-retardant polyamide resin composition containing 50 to 40% by weight of an inorganic filler (glass fiber, wollastonite, talc, calcined kaolin, my strength, etc.) has been proposed (Patent Document 4). Specifically, it contains 20% by weight or 30% by weight of glass fiber, 11 1_ 94 standard _ 0 level (thickness 13 2 inches) flame retardancy and CTI 5 Polyamide resin compositions that can exhibit 60 0 OV tracking characteristics have been proposed.
- flame retardant aids such as magnesium hydroxide, aluminum hydroxide, zinc sulfide, iron oxide, boron oxide, zinc borate may be blended.
- the amount and the effect of the addition and no specific proposal has been made for the resin composition containing the flame retardant aid.
- the problems with the above flame retardants include: foaming of strands during extrusion processing, generation of a large amount of gas, generation of mold contamination (mold deposit) during molding processing, decrease in fluidity and releasability.
- Patent Document 4 According to a follow-up test by the present inventors, the above flame retardant (containing 1 to 30% by weight of the first component and the second component, respectively) and 5 to 40% by weight of the inorganic filler are blended. However, it was found that these problems could not be solved sufficiently and further technical improvements were necessary.
- Phosphinate and / or diphosphinate and / or polymer thereof (A) (corresponding to the first component described in Patent Document 3) 20 to 80% by weight and phosphorus nitrogen flame retardant (C ) (Corresponding to the second component described in Patent Document 3)
- C phosphorus nitrogen flame retardant
- a flame retardant for thermoplastic polymer containing 10 to 75% by weight, and further a nitrogen synergist (B) 10 to 75% by weight, and Stabilizers have been proposed (Cited document 5).
- the resulting thermoplastic resin composition exhibits good glow wire stability.
- a zinc compound for example, by adding zinc borate, zinc oxide or zinc stannate
- the stability during processing is also improved.
- such resin compositions still have problems such as deterioration of the appearance of molded products and mold contamination due to gas generated during molding and bleed out of flame retardants. I found that it was not solved.
- Patent Document 1 Japanese Patent Laid-Open No. 5 4-1 6 5 6 5
- Patent Document 2 Japanese Patent Publication No. 1 1-5 1 3 0 5 9
- Patent Document 3 Japanese Patent Laid-Open No. 2 0 1 _7 2 9 7 8
- Patent Document 4 Japanese Patent Laid-Open No. 2004-29 27 55
- Patent Document 5 Japanese Patent Laid-Open No. 2005-24003
- the object of the present invention is that the extrusion processability and molding processability are good, the mold deposit and flame retardant bleed out during the molding process are small, and the hydrogen halide gas is highly corrosive during combustion. It is an object of the present invention to provide a flame retardant polyamide resin composition having excellent flame resistance and excellent mechanical and electrical properties, and a molded article comprising the same.
- the present inventors have formulated a specific aliphatic polyamide resin, a specific flame retardant, and a polyphenylene ether-based resin at a specific ratio, thereby providing a flame retardant. It was found that bleeding out and mold contamination (mold deposit) can be suppressed. It was also found that flame retardancy and glowiness can be further improved by blending a boric acid metal salt or a boric acid metal salt and a melamine cyanurate compound. Furthermore, it is possible to ensure a high level of flame retardancy at UL 94 V-0 level even in resin compositions that are formulated with a high concentration of inorganic fillers that are normally found to have reduced flame retardancy. I found.
- the first gist of the present invention is that the polyphenylene ether resin (B) is 0.1 to 100 parts by weight of the aliphatic polyamide resin (A) having a viscosity number of 70 to 200 mi Zg.
- a polyamide resin composition comprising at least 30 parts by weight of a flame retardant containing at least the following components (a), (b) and (c): (C) 5 to 100 parts,
- a flame retardant polyamide resin composition characterized in that the blending weight ratio (a) (b) (c) of each component of the flame retardant is 1 / 0.5 to 2.5 0. 5 1 to 1. Exist.
- R 3 is a linear or branched alkylene having 1 to 10 carbon atoms, an arylene having 7 to 10 carbon atoms, an alkyl arylene having 7 to 10 carbon atoms, or 7 to 10 carbon atoms.
- the second gist of the present invention resides in a molded article comprising the flame retardant polyamide resin composition.
- the polyamide resin composition of the present invention has the following effects.
- Thickness measured according to UL94 standard 1 1 6 inch molded product has flame retardancy V_0, 1 32 inch molded product flame retardancy is V-0 or V-1.
- the aliphatic polyamide resin is a polyamide in which 50 mol% or more of all the constituent components is an aliphatic compound, and examples of the aliphatic polyamide using the aliphatic compound include a three-membered ring or more.
- an aliphatic polyamide obtained by polycondensation of an aliphatic dibasic acid and an aliphatic diamine, or the like is as follows.
- Specific examples of (1) above include polyamides 4, 6, 7, 8, 1 1, 1 2, 56, 66, 69, 61 0, 61 1, 61 2, 56/6, 56 / 66, 6/66, 6 1 2 and specific examples of the above (2) include copolymerization of 6 6 T and 6 T of 60 mol% or less.
- An example is a mixture of polyamide 6 TZ6 I or polyamide MX D 6 and the polyamide resin of (1) and Z or (2) above. The thing below mol% etc. are mentioned.
- Particularly preferred polyamide resins in the present invention include polyamide 6, polyamide 66, copolymers thereof, and / or these polyamides from the viewpoint of flame retardancy, mechanical strength, and moldability.
- the main component is a polyamide resin.
- these polyamide units are 80% by weight or more, and from the viewpoint of maintaining moldability, the single weight of polyamide 6 or polyamide 66 is preferred. More preferably, it is a coalescence.
- the ratio of the aromatic compound component in the polyamide resin to 30 mol% or less, it is possible to pass an applied voltage of 500 V in the tracking resistance test and to exhibit excellent tracking characteristics.
- the ends of the polyamide resin in the present invention may be sealed with a carboxylic acid or an amine compound also for molecular weight adjustment.
- the polyamide resin suitable for the present invention has a degree of polymerization within a certain range, that is, a viscosity number within a specific range.
- the preferred viscosity number is usually 70-200 ml Zg, preferably 72- "! 8 Om Ig, measured at a concentration of 1 wt% in 96 wt% sulfuric acid at a temperature of 23 ° C.
- the viscosity number is 70 m.
- the polyphenylene ether resin in the present invention includes a flame retardant (C) described later and Because of its excellent compatibility, it is possible to exhibit the effects of suppressing the generation of gas and mold deposits during molding and the bleed-out of flame retardants. These effects are more prominent in the later-described flame retardant (C) compared to other flame retardants, and in particular, the flame retardant bleed-out suppression effect is remarkable. In addition, by adding a polyphenylene ether resin, it is possible to further improve the mechanical properties, particularly the impact resistance.
- C flame retardant
- the polyphenylene ether resin is a polymer having a structural unit represented by the following general formula (III) in the main chain, and may be either a homopolymer or a copolymer.
- R 4 is a lower alkyl group having a carbon number of “! To 3”
- R 5 and R 6 are a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms.
- Specific polyphenylene ether resins include poly (2,6_dimethyl-1,4_phenylene) ether, poly (2,6-jetyl _ 1,4-phenylene) ether. , Poly (2,6-dipropyl_1,4_phenylene) ether, poly (2-methyl-6_ethyl_1,4_phenylene) ether, poly (2-methyl_6_propyl_1) , 4_phenylene) ether, etc., and poly (2,6-dimethyl-1,4_phenylene) ether is particularly preferred.
- a preferred polyphenylene ether-based resin has an intrinsic viscosity of usually 0.2 to 0.6 dl Zg, preferably 0.3 to 0.5 dl Zg, measured at a temperature of 30 ° C. in chloroform.
- the intrinsic viscosity within the above range may be adjusted by using two or more kinds of polyethylene ether resins having different intrinsic viscosities.
- the amount of the polyphenylene ether resin (B) is 0.1 to 30 parts by weight, preferably 0.1 to 30 parts by weight with respect to 10 parts by weight of the aliphatic polyamide resin (A).
- the polyphenylene ether resin is modified with an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride, or a derivative thereof (hereinafter sometimes referred to as "modifier"). May be. This modification improves the compatibility between the polyamide resin and the polyphenylene ether resin.
- the unsaturated carboxylic acid, unsaturated carboxylic acid anhydride or derivatives thereof include (anhydrous) maleic acid, (anhydrous) itaconic acid, black mouth (anhydrous) maleic acid, (anhydrous) citraconic acid, Examples include butenyl (anhydrous) succinic acid, tetrahydro (anhydrous) phthalic acid, and acid halides, amides, imides, and alkyl or glycol esters having 1 to 20 carbon atoms. Examples thereof include rayamide, monomethyl maleate and dimethyl maleate.
- “(anhydrous)” means an unsaturated carboxylic acid or an unsaturated carboxylic acid. Among these, unsaturated dicarboxylic acids or acid anhydrides thereof are preferable, and (anhydrous) maleic acid or (anhydrous) itaconic acid is particularly preferable.
- radical generator may be blended simultaneously with the modifier.
- radical generators include organic peroxides and azo compounds.
- organic peroxides for example, t_butyl hydride peroxide, cumene hydride peroxide, 2,5_dimethyl hexane 1,2,5-dihydride oxyperoxide, 1, 1, Hydroxides such as 3,3- ⁇ tramethylbutylhydroxide, p-menthanehydride peroxide, diisopropyl benzenehydroxide; for example, 2,5-dimethyl-1,2,5-di (t _ (Butyl peroxide) Hexin 1 3, Di_t_Butyl peroxide, t-Ptylcumyl peroxide, 2, 5- Dimethyl-1,5-di (t_butylperoxy) Dialkyl peroxides such as hexane and dicumyl baroxide; for example, 2,2-bis-tert-butylperoxybutane, 2,2_bis_ peroxyketals such as t_butylperoxyoct
- azo compound examples include 2,2'-azobisisoptyronitrile,
- radical generators having a half-life temperature of 120 ° C or higher at 10 hours are preferable from the viewpoints of dimensional stability and impact resistance. Two or more of the above modifiers and radical generators may be used in combination.
- the polyphenylene ether resin modified with the above modifier is prepared by weighing and mixing a predetermined amount of the above polyphenylene ether resin (B) and a modifier (also including a radical generator). It can be produced by reacting in a molten state.
- the blending amount of the modifier is usually 0.1 to 5 parts by weight, preferably 0.2 to 4 parts by weight with respect to 100 parts by weight of the polyphenylene ether resin (B).
- the blending amount of the radical generator is usually 0.1 to 2 parts by weight per 100 parts by weight of the polyphenylene ether resin (B).
- a melt kneader generally used for thermoplastic resins can be used.
- melt kneader examples include a single-screw or multi-screw extruder, a roll, and a Banbury mixer.
- extruder for example, it is preferable to mix each component in advance with a blender, etc., and feed the obtained mixture all at once on the upstream side of the extruder and react in a molten state. It is.
- the modification of the polyphenylene ether-based resin does not need to be performed before kneading into the polyamide resin, and may be performed by blending a modifying agent during kneading to obtain the polyamide resin composition. .
- the polyphenylene ether resin (B) used in the present invention may contain other resins, and preferably 10% of all components of the polyphenylene ether resin (B).
- Styrenic resin may be included so that mol% or more is a styrene unit.
- styrenic resins examples include polystyrene resins, high-impact polystyrene resins, acrylonitrile-styrene resins, acrylonitrile-butadiene-styrene resins, methyl methacrylate-butadiene-styrene resins, styrene-ethylene-butadiene-styrene resins, Known resins such as styrene / ethylene / propylene / styrene resins are listed, and two or more types may be used in combination. These styrene resins are useful for improving fluidity because of their good compatibility with polyphenylene ether resins.
- the compatibility between the polyamide resin and the polyphenylene ether resin is achieved. It is effective to play a role as an agent.
- the modified styrene resin that functions as a compatibilizing agent is blended at the same time when kneading the polyphenylene ether resin into the polyamide resin, even if it is blended in advance with the polyphenylene ether resin. May be.
- the styrene resin may be modified before blending, and the resin composition may be mixed.
- a styrenic resin can be modified by blending a modifier during kneading.
- a modifier during kneading.
- a polyphenylene ether resin in advance, a polyphenylene ether resin, a styrene resin, the above-mentioned modifier and, if necessary, a radical generator.
- a method of producing the resin composition of the present invention by blending a polyamide resin and a flame retardant into the obtained melt-kneaded product.
- the content of the styrene resin in the polyphenylene ether resin (B) is usually 1 to 80% by weight, preferably 3 to 60% by weight, and more preferably 3 to 50% by weight. . By setting the content to 80% by weight or less, sufficient flame retardancy can be secured and bleeding out of the flame retardant can be sufficiently suppressed.
- the styrene-based resin includes an elastic body of a styrene copolymer.
- SEB S styrene-ethylene-ethylene-butadiene-styrene resin
- SEBS is a block copolymer elastic body of a styrene compound polymer block a and a conjugated diene compound polymer block b, and the hydrogen unsaturated group in the reblock b is reduced by hydrogenation. This is a representative resin of an added block copolymer.
- the arrangement structure of the block a and the block b may be any structure such as a linear structure or a branched structure (radical teleblock).
- a part of the structure may include a random chain derived from a random copolymerized portion of a styrene compound and a conjugated gen compound.
- the linear structure is preferable, and the a_b_a type triblock structure is particularly preferable. Of course, it may include an a_b type diblock structure.
- Preferred examples of the styrenic compound include styrene, monomethylstyrene, t-butyl styrene, 1,1-diphenyl styrene, and vinyl toluene. Among these, styrene is preferable.
- the conjugation compound preferably 1,3_butadiene or 2_methyl_1,3-butadiene Can be mentioned.
- the proportion of the repeating unit derived from the styrenic compound in the hydrogenated block copolymer is usually 10 to 70% by weight, preferably 10 to 40% by weight.
- the proportion of unsaturated bonds derived from the conjugation compound and remaining without being hydrogenated is usually 20% by weight or less, preferably 10% by weight or less. It is.
- about 25% by weight or less of the aromatic unsaturated bond derived from the styrene compound may be hydrogenated.
- the number average molecular weight of the hydrogenated block copolymer is usually 20,000 to 180,000, preferably 30,000 to 160,000, and more preferably 35,000 to 140,000.
- the number average molecular weight 20,000 or more the impact resistance and dimensional stability of the finally obtained resin composition are excellent, and the appearance of the molded product obtained from the resin composition is also good. I can do it.
- the number average molecular weight is not more than 180,000, the fluidity of the finally obtained resin composition is improved and the molding process becomes easy.
- reaction product (a) of melamine and phosphoric acid is the reaction product (a) of melamine and phosphoric acid.
- melamine polyphosphate obtained by heat condensation of melamine phosphate in a nitrogen atmosphere (chemical formula “(C 3 H 6 N 6 ⁇ HP 0 3 ) n ”, where n represents the degree of condensation)) I can do it.
- phosphoric acid constituting melamine phosphate include orthophosphoric acid, phosphorous acid, hypophosphorous acid, metaphosphoric acid, pyrophosphoric acid, triphosphoric acid, and tetraphosphoric acid.
- melamine polyphosphate obtained by condensing an adduct with melamine using orthophosphoric acid or pyrophosphoric acid is highly effective as a flame retardant.
- the condensation degree n of such melamine polyphosphate is preferably 5 or more.
- the melamine polyphosphate may be an equimolar addition salt of polyphosphoric acid and melamine, and all of the above-described polyphosphoric acid and melamine may form an addition salt, or a mixture thereof.
- polyphosphoric acid that forms an addition salt with melamine chain polyphosphoric acid called cyclic phosphoric acid or cyclic polymetaphosphoric acid may be used.
- the degree of condensation n of these polyphosphoric acids is usually 3 to 50. From the viewpoint of the heat resistance of the resulting melamine addition salt of polyphosphoric acid, the degree of condensation n of polyphosphoric acid is preferably 5 or more.
- the melamine polyphosphate addition salt is prepared by forming a mixture of melamine and polyphosphoric acid into, for example, a water slurry and mixing well to form both reaction products into fine particles, and then filtering and washing the slurry. It is a powder obtained by drying, further firing if necessary, and pulverizing the obtained solid.
- the melamine polyphosphate may be an addition salt of phosphoric acid and a melamine condensation product, or all of phosphoric acid and a melamine condensation product may form an addition salt. It may be a mixture. Examples of melamine condensation products that form addition salts with phosphoric acid include melee, melamine, and melon.
- the number average particle diameter of melamine polyphosphate is usually 100 m or less, preferably 50 m or less, and more preferably 0. 5 ⁇ 20 m.
- the melamine polyphosphate does not necessarily have to be completely pure, and some unreacted melamine, melamine condensate, phosphoric acid, and polyphosphoric acid may remain.
- the proportion of phosphorus atoms in the melamine polyphosphate is preferably 8 to 18% by weight because there is little phenomenon that contaminants adhere to the mold during molding.
- the amount of component (a) is usually 1 to 60 parts by weight, preferably 5 to 50 parts by weight, more preferably 8 to 8 parts by weight based on 100 parts by weight of the aliphatic polyamide resin (A). 40 parts by weight. Flame retardancy can be sufficiently improved by adding 1 part by weight or more of component (a), and by reducing it to 60 parts by weight or less, gas generation can be reduced, and extrusion and molding processes can be performed. Sometimes trouble can be avoided.
- One of the components contained in the flame retardant (c) is a phosphinate represented by the following general formula (I) and / or a diphosphinic acid salt (b) represented by the following general formula (II). .
- phosphinate represented by the following general formula (I)
- b diphosphinic acid salt
- R 1 and R 2 are the same or different, and linear ⁇ is a branched alkyl having 1 to 6 carbon atoms and / or 6 to 6 carbon atoms] 10 aryl, R 3 is linear or branched alkylene having 1 to 10 carbon atoms, arylene having 7 to 10 carbon atoms, alkyl arylene having 7 to 10 carbon atoms, or 7 to 1 carbon atoms.
- 0 aryl alkylene
- M is C a, Mg, 1 or ⁇ ⁇
- m is the valence of M
- 2 n mx
- n is 1 or 3
- x is 1 or 2
- R 1 and R 2 include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a tert-butyl group, an n-pentyl group, and a phenyl group.
- R 3 methylene group, ethylene group, n-propylene group, i-propylene group, n_butylene group, tert-butylene group, n-pentylene group, n-octylene group, n-dodecylene group, phenylene Group, naphthylene group and the like.
- M is preferably Ca, AI or Zn.
- Phosphinates are produced in aqueous media using, for example, phosphinic acid and metal carbonates, metal hydroxides or metal oxides.
- Phosphinate is essentially a monomeric compound, but it depends on the reaction conditions and depends on the environment. Therefore, it may be a polymeric phosphinate having a degree of condensation of 1 to 3.
- Examples of the phosphinic acid include dimethylphosphinic acid, ethylmethylphosphinic acid, jetylphosphinic acid, methyl _n-propylphosphinic acid, and methanedi
- Metal component to be reacted with the phosphinic acid include metal carbonates, metal hydroxides or metal oxides containing calcium ion, magnesium ion, aluminum ion and / or zinc ion.
- phosphinic acid salts include calcium dimethylphosphinate, magnesium dimethylphosphinate, aluminum dimethylphosphinate, zinc dimethylphosphinate, calcium ethylmethylphosphinate, magnesium ethylmethylphosphinate, aluminum ethylmethylphosphinate, ethylmethylethyl Zinc phosphinate, calcium jetyl phosphinate, magnesium jetyl phosphinate, aluminum jetyl phosphinate, zinc jetyl phosphinate, calcium methyl _n-propyl phosphinate, methyl _n _ magnesium propylphosphinate, methyl n-propylphosphine Aluminum carbonate, methyl n-propyl phosphinate zinc, methyl phenyl phosphite calcium phosphite, methyl phenyl phos Insan magnesium, Mechirufu E alkenyl aluminum phosphinate, Mechirufu E al
- Diphosphinic acid salts include methandi (methylphosphinic acid) calcium, methandi (methylphosphinic acid) magnesium, methandi (methylphosphinic acid) aluminum, methandi (methylphosphinic acid) zinc, benzene 1,4-di (methyl) Phosphinic acid) Calcium, Benzene-1,4-di (methylphosphinic acid) Magnesium, Benzene-1,4-di (methylphosphinic acid) Aluminum, Benzene-1,4-di (methylphosphinic acid) Zinc And so on.
- phosphinates in particular, from the viewpoint of flame retardancy and electrical properties, aluminum ethylmethylphosphinate, aluminum diethyl phosphinate, and zinc diethylphosphinate are particularly preferred. preferable.
- the (di) phosphinate has a number average particle size of usually 100 m or less, preferably 80 mm or less.
- the use of 0.5-5 Ojum powder not only exhibits high flame retardancy, but also significantly improves the strength of the molded product.
- the proportion of the phosphorus atom in the phosphinate is preferably 5 to 40% by weight from the viewpoint that there is little phenomenon of contaminating substances adhering to the mold during the molding process.
- Phosphinic acid salt acts as a flame retardant, but when used in combination with an adduct (a) formed from melamine and phosphoric acid, it can exhibit excellent flame retardancy and excellent electrical properties. I can do it.
- the amount of component (b) is usually 2 to 70 parts by weight, preferably 8 to 60 parts by weight, more preferably 12 to 50 parts by weight, based on 100 parts by weight of the aliphatic polyamide resin (A). Part.
- the amount of component (b) 2 parts by weight or more, flame retardancy can be sufficiently improved, and by making it 70 parts by weight or less, troubles during extrusion and molding can be avoided. There is a tendency.
- One of the other components contained in the flame retardant (C) is a metal borate (c).
- the boric acid metal salt those which are stable under normal processing conditions and have no volatile components are preferable.
- the boric acid metal salt include alkali metal salts of boric acid (such as sodium tetraborate and potassium metaborate) and alkaline earth metal salts (such as calcium borate, magnesium orthoborate, barium orthoborate, and zinc borate). .
- the number average particle size of the boric acid metal salt is usually 30 jUm or less, preferably 1 to 2 OjUm.
- the amount of component (c) is usually 0.1 to 30 parts by weight, preferably 0.5 to 25 parts by weight, more preferably 1 to 100 parts by weight of the aliphatic polyamide resin (A). ⁇ 20 parts by weight. Flame retardancy and tracking resistance can be improved by setting the blending amount of component (c) to 0.1 parts by weight or more, and impact strength can be kept good by setting it to 30 parts by weight or less. I can do it.
- the flame retardancy improving effect is small, and when it is more than the above range, gas tends to be generated.
- the blending weight ratio of component (c) is less than the above range, the effect of improving the flame retardancy and tracking resistance is not sufficient, and when it exceeds the above range, the flame retardancy is insufficient and gas is also generated. In many cases, glow wire properties and impact strength tend to decrease.
- the total weight ratio of the components (a), (b) and (c) in the flame retardant (C) is usually
- flame retardant (C) as a component other than the above components (a) to (c), other flame retardants, for example, triazines such as melamine cyanurate, phosphate esters, metal hydrates
- flame retardants such as those based on silicone and silicone can be included, triazine flame retardants are preferred, and melamine cyanurate (d) is particularly preferred.
- the melamine cyanurate is an equimolar reaction product of cyanuric acid and melamine, and some of the amino groups or hydroxyl groups in the melamine cyanurate may be substituted with other compounds. It may be substituted with a substituent.
- Melamine cyanurate can be obtained, for example, by mixing an aqueous solution of cyanuric acid and an aqueous solution of melamine, reacting at a temperature of 90 to 100 ° C. with stirring, and filtering the produced precipitate.
- the reaction product is a white solid and is preferably used after being pulverized into a fine powder. Of course, commercial products can be used as they are or after being pulverized.
- the main component is a polyamide resin, specifically, polyamide 6, which has a melting point as low as 260 ° C. and can ensure flame retardancy. It is preferable to use a polyamide resin as a component.
- the amount of melamine cyanurate (d) is usually 0.2 to 40 parts by weight, preferably 1 to 30 parts by weight, more preferably 100 parts by weight of the aliphatic polyamide resin (A). Is 3 to 25 parts by weight.
- the blending amount of component (d) is 0.2 parts by weight or more, sufficient flame retardancy can be exhibited, and when it is 40 parts by weight or less, extrusion processing is facilitated, and at the time of molding Resin decomposition can be suppressed.
- the blending weight ratio (a) Z (b) Z (c) Z (d) of each of the above components in the flame retardant (C) is 1 / 0.5 to 2.5 / A force that is 0.0 1-1/0. 0 2 to 2, preferably 1 0.6 to 2.4 / 0. 05- 1 / 0.0.2 to 1.8.
- the flame retardancy improving effect is small, and when it is more than the above range, gas tends to be generated frequently.
- the blending ratio of the component (c) is less than the above range, the effect of improving flame retardancy and tracking resistance is not sufficient, and when it is more than the above range, the flame retardancy is insufficient and gas is generated. In many cases, glow wire properties and impact strength tend to decrease.
- the blending ratio of component (d) is less than the above range, When stony is selected and blended at a high concentration, specifically, flame retardancy is improved when wollastonite is blended at 40 parts by weight or more with 100 parts by weight of aliphatic polyamide resin (A). However, when the amount is larger than the above range, mold deposits are likely to occur.
- the total weight ratio of the components (a), (b), (c) and (d) in the flame retardant (C) is usually 60% by weight or more, preferably 65% by weight or more, more preferably 70% by weight. % Or more. By making the total weight ratio of each component within the above range, the flame retardancy improving effect is increased.
- the flame retardant (C) is added in an amount of 5 to 100 parts by weight, preferably 7 to 90 parts by weight, and more preferably 10 to 100 parts by weight of the aliphatic polyamide resin (A). ⁇ 80 parts by weight.
- the flame retardant (C) 5 parts by weight or more, the flame retardancy and glow wire properties can be sufficiently improved, and by making it 100 parts by weight or less, good mechanical properties are achieved. The strength can be demonstrated, and the generation of gas and mold deposit is reduced, and the molding process becomes easy.
- Inorganic fillers used in the present invention include glass fillers (glass fibers, crushed glass fibers (milled fibers), glass flakes, glass beads, etc.), calcium silicate fillers (warastnite, etc.), My strength Talc, kaolin, potassium titanate whisker, carbon fiber, etc. These are appropriately selected and used according to the properties required for the molded product. For example, from the viewpoints of mechanical properties, flame retardancy, and economy, glass-based fillers are preferable. Furthermore, from the viewpoint of low alkali content and good electrical characteristics, glass-based filling made of E glass is preferred. More preferred are materials. Further, from the viewpoint of tracking characteristics and appearance of the molded product, a calcium silicate filler is preferable.
- Wallastoni cocoon is known as a typical calcium silicate filler.
- Warasutonai DOO is a mineral white needles, usually, the S i 0 2 4 0 ⁇ 60 wt%, the C a O containing 40 to 55 wt%, Other F e 2 0 3, AI 2 0 3, MgO, containing components such as N a 2 0, K 2 0 .
- Wallastney The product may be a natural product that is crushed and classified in some cases, or may be a synthetic product.
- the Hunter whiteness is 60 or more, and in order not to deteriorate the weather resistance of the polyamide, it is preferable that the slurry has a pH value of 6 to 8 when the slurry is adjusted to 10% by weight in high purity water.
- the average size (I) of the inorganic filler (D) is not particularly limited, but is usually 10 to 300 m. By setting the average size (I) to 10 m or more, the mechanical strength and heat resistance can be sufficiently improved. By setting it to 300 jum or less, excellent flame retardancy and glow wire characteristics are achieved. It can be demonstrated. In order to meet the flame retardancy and tracking resistance required for breaker applications, an inorganic filler of 10 to 1 O OjUm is more preferable, and an inorganic filler of 15 to 65 Um is more preferable.
- the above average size (I) indicates the number average value of the maximum dimensions of the filler.
- the number average size for each shape is combined for each shape. It is the value averaged by multiplying the ratio.
- the above maximum dimension means the maximum length in the fiber direction in the case of fibrous glass fiber, crushed glass fiber, and wallastonia, and the maximum diameter of the plate in the case of My glass In the case of spherical glass beads, the maximum diameter of the sphere.
- the minimum dimension is the diameter in the direction perpendicular to the fiber in the case of a fibrous material, the plate thickness in the case of a plate-like material, and the minimum diameter of a sphere in the case of a spherical material.
- the average diameter (d) is the value obtained by averaging the minimum dimensions.
- the aspect ratio (i Zd) of the inorganic filler is usually 1.5 to 8, preferably 2 to 7.
- the mechanical strength is improved, and by setting the aspect ratio to 8 or less, the resin composition has excellent flame resistance, tracking resistance and glow wire properties. I can do it.
- the average size (I) and average diameter (d) of the inorganic filler were measured by heating the resin composition pellet in a 500 ° C electric furnace for 30 to 60 minutes to completely incinerate. Perform on the resulting particles. After ashing, an appropriate amount of the obtained filler particles is added to a 3% by weight neutral detergent aqueous solution and stirred, and the resulting dispersion of filler particles is pipetted. Take the sample on a glass plate and take a picture with a stereomicroscope. For the photographic image, the maximum size and the minimum size of each individual particle are measured by a digitizer and averaged by the above method.
- the inorganic filler is preferably treated with a surface treatment agent or a sizing agent from the viewpoint of mechanical strength.
- the inorganic filler may be surface-treated in advance, or when the resin composition of the present invention is produced, a surface treatment agent or a sizing agent may be added separately from the untreated inorganic filler, and the surface treatment may be performed. .
- Examples of the surface treating agent include T-aminopropyltriethoxysilane, r-aminopropyl trimethoxysilane, r_ (2-aminoethyl) aminopropyltrimethoxysilane and other aminoamino compounds, vinyl trichlorosilane silane, and the like.
- Chlorosilane compounds such as methylvinyldichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, alkoxysilane compounds such as r_methacryloxypropyl trimethoxysilane, ⁇ - (3,4_ (Epoxycyclohexyl) Epoxy silane compounds such as etyltrimethoxy silane and r-glycidoxypropyl trimethoxysilane, acrylic compounds, isocyanate compounds, titanate compounds, and epoxy compounds.
- the sizing agent examples include resin emulsions such as vinyl acetate resin, ethylene vinyl acetate copolymer, acrylic resin, epoxy resin, polyurethane resin, and polyester resin.
- attachment amount is usually 10% by weight or less, preferably 0. 0%, based on the weight of the inorganic filler. 0 5 to 5% by weight.
- the glass fiber is preferably treated with the sizing agent described above.
- glass fiber handling operability can be improved and glass fiber damage can be prevented.
- the amount of the inorganic filler (D) is: aliphatic polyamide resin (A) 100 parts by weight On the other hand, it is usually 5 to 1550 parts by weight, preferably 5 to 1450 parts by weight, and more preferably 5 to 1400 parts by weight.
- the blending amount of the inorganic filler (D) is set to 5 parts by weight or more, the mechanical properties tend to be exhibited sufficiently, and the decrease in rigidity due to water absorption can be prevented.
- the blending amount 1550 parts by weight or less the surface appearance of the molded product can be kept better. Two or more inorganic fillers may be used in combination depending on the required properties.
- the resin composition of the present invention is particularly excellent in mechanical properties and electrical properties, it is suitable for breakers and electrical parts. In that case, in particular, it is often required to have excellent impact resistance.
- the elastic polymer described below is used for the purpose of increasing impact resistance.
- Typical examples of the elastic polymer include an ethylene monoolefin copolymer, a hydrogenated product of a block copolymer of a styrene compound polymer block a and a conjugated compound polymer block b.
- the glass transition temperature is usually 120 ° C. or lower, preferably 130 ° C. or lower. By setting the glass transition temperature of the elastic polymer to 120 ° C. or less, impact resistance at low temperatures can be improved.
- the ethylene monoolefin-based copolymer is a rubbery copolymer having ethylene and monoolefin as essential components.
- the weight ratio of ethylene to monoolefin in this ethylene monoolefin copolymer is usually 90:10 to 20:20, preferably 75:25 to 40:60.
- Monoolefins used for copolymerization include unsaturated hydrocarbon compounds having 3 to 20 carbon atoms such as propylene, 1-butene, 1-hexene, 1-octene, 1-decene, and 3-methylbutene. 1, 4-methylpentene and the like. Usually, straight-chain olefins having 3 to 10 carbon atoms are used, and propylene, 1-butene and 1-octene are particularly preferable.
- the ethylene monoolefin-based copolymer may be a copolymer in which a gen compound is introduced in addition to ethylene and the monoolefin described above.
- a gen compound examples include alkenyl norbornenes, cyclic genes, and aliphatic genes, and 5_ethylidene-2-norbornene and dicyclopentagen are particularly preferable.
- Melt flow rate (MFR) AS TM-D 1 238, temperature 1 90 ° C, load 2.16 kg
- MFR Melt flow rate
- a block copolymer of a styrene compound polymer block a and a conjugated diene compound polymer block b or a hydrogenated product thereof is also preferably used.
- a styrene-based elastic polymer may be used for modifying the polyphenylene ether-based resin (B).
- the resin composition of the present invention may be used. It can be added as a component (E) of the product.
- the styrene-based compound and the conjugated-gen compound used in these block copolymers or hydrogenated products thereof those described in the explanation of the above-mentioned “styrene-based resin” are preferable.
- Examples of hydrogenated block copolymers include S EBS in which the conjugation compound, which is a monomer constituting the conjugation compound polymer block b, is 1,3-butadiene, conjugation system
- conjugation compound which is a monomer constituting the conjugation compound polymer block b
- conjugation system A variety of a_b_a type triblock structures such as styrene-ethylene-propylene-styrene copolymer (SEPS), whose compound is 2_methyl_1,3_butadiene, are commercially available. It is available.
- the number average molecular weight of the block copolymer or a hydrogenated product thereof is usually 20,000 to 18,000, preferably 30,000 to 1,60,000, more preferably 35,000 to 1,40, 000.
- the number average molecular weight is set to 20,000 or more, the impact resistance and dimensional stability of the finally obtained resin composition are excellent, and the appearance of the molded product obtained from the resin composition is also excellent. I can do it.
- the number average molecular weight is set to 180,000 or less, the fluidity of the finally obtained resin composition is improved and the molding process is facilitated.
- an elastic polymer modified with a modifying agent such as unsaturated carboxylic acid, unsaturated carboxylic acid anhydride or derivative thereof is preferably used.
- the blending amount of the modifying agent is usually 0.05 to 5 parts by weight, preferably 0.2 to 4 parts by weight with respect to 100 parts by weight of the elastic polymer.
- the blending amount is 0.05 parts by weight or more, a decrease in impact resistance is suppressed, and when it is 5 parts by weight or less, thermal stability, fluidity, and dimensional stability are improved.
- the blending amount of the radical generator is usually 0.1 to 2 parts by weight with respect to 100 parts by weight of the elastic polymer.
- the modifying agent and the radical generating agent for example, the same compounds as in the modification of the above-mentioned polyphenylene ether-based resin are suitable.
- the blending amount of the elastic polymer (E) is usually 1 to 40 parts by weight, preferably 3 to 35 parts by weight, more preferably 100 parts by weight with respect to the aliphatic polyamide resin (A). 3 to 30 parts by weight.
- the blending amount 1 part by weight or more impact resistance is improved and productivity at the time of injection molding is improved.
- Two or more of the above elastic polymers may be used in combination.
- a release agent may be used mainly for improving the productivity at the time of molding the resin composition.
- an aliphatic release agent is preferable.
- Aliphatic mold release agents include aliphatic carboxylic acid metal salts, amides, aliphatic carboxylic acids, aliphatic carboxylic acid esters, and aliphatic hydrocarbons. Among these, In particular, long-chain aliphatic carboxylic acid metal salts and carboxylic acid amide series are preferred. Two or more release agents may be used in combination.
- the long-chain aliphatic carboxylic acid metal salt is a metal salt of an aliphatic carboxylic acid having 16 to 36 carbon atoms. Specific examples thereof include calcium stearate, calcium montanate, and montan. Acid sodium, zinc stearate, suaring Examples thereof include aluminum oxide, sodium stearate, and lithium stearate.
- Examples of the carboxylic acid amide waxes include higher aliphatic monostrength sulfonic acids and / or compounds obtained by dehydration reaction of polybasic acids and diamines.
- the higher aliphatic monocarboxylic acid is preferably a saturated aliphatic monocarboxylic acid having a carbon number of 16 or more and hydroxycarponic acid, such as palmitic acid, stearic acid, behenic acid, montanic acid, 1 2 -Hydroxystearic acid.
- polybasic acids examples include aliphatic dicarboxylic acids such as malonic acid, succinic acid, adipic acid, sebacic acid, pimelic acid, and azelaic acid, aromatic dicarboxylic acids such as phthalic acid and ⁇ phthalic acid, cyclohexane And alicyclic dicarboxylic acids such as hexanedicarboxylic acid and cyclohexylsuccinic acid.
- aliphatic dicarboxylic acids such as malonic acid, succinic acid, adipic acid, sebacic acid, pimelic acid, and azelaic acid
- aromatic dicarboxylic acids such as phthalic acid and ⁇ phthalic acid
- cyclohexane cyclohexane
- alicyclic dicarboxylic acids such as hexanedicarboxylic acid and cyclohexylsuccinic acid.
- diamine examples include ethylenediamine, 1,3-diaminopropan, 1,4-diaminobutane, hexamethylenediamine, metaxylylenediamine, tolylenediamine, paraxylylenediamine, phenylenediamine, Examples include isophorone diamine.
- the softening point can be arbitrarily adjusted by changing the mixing ratio of the polybasic acid to the higher aliphatic monocarboxylic acid used in the production thereof.
- the mixing ratio of the polybasic acid is usually 0.18 to 1.0 mol with respect to 2 mol of the higher aliphatic monocarboxylic acid.
- the mixing ratio of diamine is usually 1.5 to 2.0 moles per 2 moles of higher aliphatic monocarboxylic acid, and varies according to the amount of polybasic acid used.
- the carboxylic acid amide wax is preferably a compound obtained by polycondensation of stearic acid, sebacic acid and ethylenediamine, and polycondensation of 2 mol of stearic acid, 1 mol of sebacic acid and 2 mol of ethylenediamine. More preferred are those compounds.
- N, N'-methylenebisstearic acid amide reacts with diamines such as N, N'-ethylene bissuaric acid amide and aliphatic carboxylic acids.
- dicarboxylic acid amide compounds such as N, N′-dioctadecyl terephthalic acid amide can be suitably used.
- the compounding amount of the release agent (F) is usually 0.001 to 3 parts by weight, preferably 0.005 to 2 parts by weight with respect to 100 parts by weight of the aliphatic polyamide resin (A). .
- the productivity at the time of injection molding can be improved without deteriorating flame retardancy, tracking resistance and glow wire characteristics.
- the dispersibility of the release agent is also improved.
- resin additives other than the above-described components for example, stabilizers, antioxidants, pigments, dyes, nucleating agents, antistatic agents, ultraviolet rays, as long as the object of the present invention is not impaired.
- Absorbents and other well-known additives can be used. Two or more of the above additives may be used in combination.
- the stabilizer for example, organic stabilizers such as phosphorus-based, hindered phenol-based, hindered amine-based, and oxalic acid-based halides, and inorganic stabilizers such as copper compounds and halides are preferable.
- organic stabilizers such as phosphorus-based, hindered phenol-based, hindered amine-based, and oxalic acid-based halides
- inorganic stabilizers such as copper compounds and halides
- phosphorus stabilizer phosphite compounds and phosphonate compounds are preferred.
- phosphite compounds include distearyl pentaerythritol I ⁇ -l diphosphite, dinonylphenylpentaerythritol I ⁇ -ldiphosphite, bis (2,4-di-t_butylphenyl) pentaerythritol! ⁇ Ludiphosphite, bis (2,6-di-t_butyl_4_methylphenyl) pentaerythri! ⁇
- One rudiphosphite Bis (2, 6-di_t_butyl_4-ethyl chloride) Pentaerythri!
- Ludiphosphite bis (2,6_di-tert-butyl_4_isopropylphenyl) pentaerythri I ⁇ Ludiphosphite, bis (2,4,6-tri-t-butylphenyl) pentaerythri! ⁇ One Rudifolite, Bis (2, 6-di_t_butyl_4_sec_butylphenyl) Pentaerythri!
- Examples of phosphonate compounds include tetrakis (2,4-di-t-butylphenyl) _4, 4'-biphenyl dirange phosphonate, ⁇ trakis (25-di-t-butylphenyl) _4, 4 '— Biphenyl dirange phosphonate, ⁇ trakis (2, 3, 4_trimethylphenyl) _4, 4' — Biphenylenediphosphonate, ⁇ trakis (2, 3-dimethyl dimethyl-5_ethylphenyl) _4, 4 '— Biphenyl dirange phosphonate, ⁇ trakis (2, 6-di_t_butyl _5_ethyl phenyl) _4, 4 '— Biphenyl dirange phosphonate, ⁇ ⁇ ⁇ trakis (2, 3, 4_tributyl phenyl) _4, 4 '— biphenylene diphosphonate,
- hindered phenol stabilizers include n-octadecyl mono 3-(3,5-di-t_butyl _4-hydroxyphenyl) propionate, 1,6-hexanediol monobis [3- (3,5-Di-t_butyl_4-hydroxyphenyl) propionate], Pentaerythri I ⁇ monotetrakis [3- (3,5-Di-t_butyl_4-hydroxyphenyl) propionate], 3, 9_bis [1, 1-dimethyl mono 2_ ⁇ - (3_ 1 _butyl_4_ hydroxy mono 5_methylphenyl) propionyloxy ⁇ ethyl] _2, 4, 8, 10, 0— ⁇ traoxaspiro [5, 5] undecane, Triethylene glycol monobis [3_ (3_t_butyl_5_methyl_4-hydroxyphenyl) propionate], 3, 5_di-t_butyl
- n-octadecyl 1_ (3, 5-di-t _propyl 4-hydroxyphenyl) propionate, 1, 6-hexanediol-bis [3- (3, 5_ t_butyl _4 —Hydroxyphenyl) Probione-to], Pentaerythri
- hindered amine stabilizer examples include known hindered amine compounds having a 2, 2, 6, 6-,-tramethylpiperidine skeleton.
- Specific examples of hindered amine compounds include 4-acetoxy-1,2,6,6-tetramethylpiperidine, 4-stearoyloxy_2,2,6,6-tetramethylpiperidine, 4-acryloyloxy _ 2, 2, 6, 6-tetramethylbiperidine, 4_phenylacetoxy 1, 2, 6, 6-tetramethylbiperidine, 4_benzoyloxy_2, 2, 6, 6-tetramethylpiperidine, 4-Methoxy-1, 2, 2, 6, 6-tetramethylpiperidine, 4-stearyloxy _ 2, 2, 6, 6-tetramethylpiperidine, 4-dioxyhexyloxy _ 2, 2, 6, 6— Tetramethylpiperidine, 4_benzyloxy_ 2, 2, 6, 6— ⁇ tramethylpiperidine, 4_phenoxy_2, 2, 6, 6— ⁇ tramethylpiperidine, 4-ethylcarbamo
- the copper compound used as the inorganic stabilizer is a copper salt of various inorganic acids or organic acids, and may be either cuprous or cupric. Specific examples thereof include copper chloride, In addition to copper bromide, copper iodide, copper phosphate, copper stearate, natural minerals such as hydrotalcite, stichtite, and pie mouth light are listed.
- Halides used as inorganic stabilizers include, for example, alkali metal or alkaline earth metal halides; halogenated ammonium halides and quaternary ammonium halides of organic compounds.
- Organic halides such as alkyl halides and aryl halides, and specific examples thereof include ammonium iodide, stearyltriethylammonium bromide, benzyltriethylammonium iodide, and the like.
- metal halide salts such as potassium chloride, sodium chloride, potassium bromide, potassium iodide, and sodium iodide are preferred.
- the combined use of a copper compound and a halide in particular, the combined use of a copper compound and an alkali metal halide, is preferable because it provides excellent effects in terms of heat discoloration and weather resistance (light resistance).
- a copper compound when used alone, the molded product may be colored reddish brown with copper, and this coloring is not preferred depending on the application. In this case, discoloration to reddish brown can be prevented by using a copper compound and a halide together.
- the blending amount of the stabilizer is usually 0.001 to 3 parts by weight, preferably 0.01 to 2 parts by weight with respect to 100 parts by weight of the aliphatic polyamide resin (A). Part.
- the blending amount By setting the blending amount to 0.01 part by weight or more, the effect of improving thermal discoloration and weather resistance and light resistance can be sufficiently exerted, and by reducing the blending amount to 3 parts by weight or less, the machine It is possible to suppress deterioration of physical properties.
- the resin composition of the present invention may contain other resins as necessary within the range not impairing the effects of the present invention.
- the thermoplastic resin that can be blended include an acrylic resin, a polyester resin, a polyphenylene sulfide resin, a liquid crystal polyester resin, and a polyacetal resin.
- thermosetting resins that can be combined include phenol resin, melamine resin, silicone resin, and epoxy resin.
- the blending amount of the other resin is usually 50% by weight or less, preferably 45% by weight or less, as a proportion of the aliphatic polyamide resin (A).
- the blending of the above-described components and other additives into the aliphatic polyamide resin (A) can be carried out by various well-known means at an arbitrary stage until immediately before the final molded product is molded.
- the simplest method is a method of simply dry blending a polyamide resin and a polyphenylene ether resin, a flame retardant and an inorganic filler, and a release agent.
- melt mixing extrusion a method in which the dry blend is pelletized by melt mixing extrusion is also simple and preferable.
- melt mixing extrusion it is particularly stable if polyamide resin, polyphenylene ether resin, flame retardant, and release agent are supplied all at once from the hopper port of the extruder and inorganic filler is supplied from the side feed port. Mixing out.
- a master pellet prepared by kneading a part of the aliphatic polyamide resin with a flame retardant greater than a predetermined blending ratio is prepared in advance, and this is dry blended with the remaining components.
- the method of melt-mixing extrusion later is mentioned.
- Manufacture of molded products such as electrical / electronic parts and automotive electrical parts is performed by supplying the polyamide resin composition such as the above-mentioned drive render to various molding machines such as injection molding machines. It can be carried out according to the usual method of pouring into a mold and removing it after cooling.
- the polyamide resin composition of the present invention is excellent in mechanical properties and electrical properties. Therefore, in addition to various parts such as connectors for electrical / electronic fields, breakers, magnetic switches, safety breakers incorporated in electrical wiring, and leakage breaker applications, Suitable for electrical parts in the field of automobiles.
- Polyphenylene ether resin 100 parts by weight and maleic anhydride (reagent first grade) 0.8 parts by weight and styrene resin 15 parts by weight were thoroughly mixed with a super mixer, and the resulting mixture was biaxially extruded. It was melt-kneaded with a machine (“TEX30XCT” manufactured by Nippon Steel Co., Ltd.) and pelletized to obtain a polyphenylene ether resin.
- the above polyphenylene ether resin includes “PX 1 00 L” manufactured by Polyxylenol Singapore Co., Ltd. (poly (2, 6—) with an intrinsic viscosity of 0.3 dl Zg measured in chloroform at a temperature of 30 ° C. Dimethyl _ 1, 4_ phenylene) ether ⁇ , and the above styrenic resin includes styrenic compound conjugate Hydrogenated compound block copolymer ("Clayton G 1 652" manufactured by Shell)
- the number average molecular weight 49,000 was used.
- C_b 1,2-ethylmethylphosphinic acid aluminum salt obtained by the following production method (number average particle size 30-4 OjUm, phosphorus content about 23% by weight)
- E- 1 Maleic anhydride-modified ethylene monobutene copolymer (E BR) ⁇ 3 “Modic AP 730T” manufactured by Ryo Chemical Co., Ltd., glass transition temperature of less than 70 ° C, MFR 2 1 Om in (ASTM_D 1 238, temperature 1 90 ° C, load 2.16 kg), surface hardness 83 (old JI S_K6301 _ typ e_A: Announced date 1 May 1, 995), density 0.89 gZcm 3 ⁇
- test method I EC60695-2-1-2 standard for a test piece with a size of 100 x 100 x 1.6 mm produced by the method described below, at a temperature of 960 ° C. If the standard was satisfied, it was accepted.
- test piece having a size of 100 ⁇ 100 ⁇ 3 mm manufactured by the method described later was measured in accordance with the test method IEC60112 standard. Tracking resistance was evaluated by pass / fail judgment at an applied voltage of 50 OV.
- the surface appearance of the molded product at the 100th shot obtained in the above mold deposit evaluation is as follows: (1) Silver due to gas generated during injection molding, (2) Insufficient compatibility between polyamide resin and polyphenylene ether resin The presence or absence of defects such as surface peeling based on this was visually observed. ⁇ indicates that there is no defect, ⁇ indicates that there is a very small defect, but a general molded product is accepted as ⁇ , and a general molded product that has a defect that is not acceptable is expressed as X. .
- a resin composition pellet obtained by the method described below was dried at 80 ° C for 10 hours, and then a box-shaped product (bottom 100 X 15 Omm, height 5 Omm, thickness 2 mm) was injection-molded.
- the mold release property at the time of injection molding was evaluated.
- Injection molding uses an injection molding machine (“J 75 ED” manufactured by Nippon Steel Works), cylinder temperature 240-270 ° C, mold temperature 80 ° C, injection speed 50mmZ seconds, injection pressure 500 kgfcm 2 , maintenance The pressure was 300 kgf Zcm 2 , the pressure holding time was 12 seconds, and the cooling time was 20 seconds.
- the cylinder temperature was 240 using a twin-screw extruder (“TEX30XCT” manufactured by Nippon Steel Co., Ltd., barrel 1 3 block configuration). ⁇ 2703 ⁇ 4, under the conditions of screw speed of 20 0 rp m, it was melt-kneaded, and manufacturing the Peretsuto of made of polyamide resin composition.
- the inorganic filler (D) was supplied by side feed from the 9th block counted from the hopper side.
- the obtained resin composition pellets were dried at 80 ° C for 10 hours, and then the cylinder temperature was 240 to 270 ° C and the mold temperature was 80 with an injection molding machine (“J 75 ED” manufactured by Nippon Steel). Injection molding was performed under the setting condition of ° C, and each test piece for measuring the above flame retardancy, glow wire property, tracking resistance, and mechanical properties was produced. Using the obtained test piece, the above-described evaluation was performed. The evaluation results are shown in Tables 1-4.
- Tables 1 to 4 show the following.
- the resin compositions of Examples 1 to 13 are excellent in flame retardancy, tracking resistance, glow wire properties and mechanical properties, and have a small mold deposit during molding. In addition, the appearance of the molded product is good. In addition, it is a resin composition that does not bleed out even under high temperature and high humidity and has excellent long-term storage. In particular, the resin composition to which calcium montanate was applied as a release agent achieved UL 94 V-0 level even at a thickness of 13 2 inches.
- the polyamide resin composition of the present invention has good flame retardancy, tracking resistance, glow wire properties and mechanical properties, and has a small mold deposit during molding. Excellent moldability, good appearance of molded products, and stable for a long time with little bleed-out even under high temperature and high humidity. Electrical ⁇ Electronic parts, especially safety breakers, earth leakage circuit breakers, etc. And automotive electrical equipment department It is judged that it is useful as a product material.
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Abstract
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Priority Applications (3)
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EP07713589.5A EP1995280B1 (en) | 2006-03-17 | 2007-03-12 | Flame retardant polyamide resin composition and molding |
CN2007800087959A CN101400735B (zh) | 2006-03-17 | 2007-03-12 | 阻燃性聚酰胺树脂组合物和成型品 |
US12/293,022 US7968629B2 (en) | 2006-03-17 | 2007-03-12 | Flame retardant polyamide resin composition and molded article |
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JP2006074194 | 2006-03-17 | ||
JP2006-074194 | 2006-03-17 |
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WO2007108202A1 true WO2007108202A1 (ja) | 2007-09-27 |
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US (1) | US7968629B2 (ja) |
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JP2009275217A (ja) * | 2008-04-14 | 2009-11-26 | Asahi Kasei Chemicals Corp | ポリアミド組成物 |
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JP7135678B2 (ja) | 2017-09-28 | 2022-09-13 | 東レ株式会社 | 防爆性を有する圧力筐体用ポリアミド樹脂組成物およびそれを成形してなる圧力筐体 |
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CN101400735B (zh) | 2011-02-09 |
EP1995280A4 (en) | 2012-08-01 |
US20090312468A1 (en) | 2009-12-17 |
CN101400735A (zh) | 2009-04-01 |
EP1995280A1 (en) | 2008-11-26 |
US7968629B2 (en) | 2011-06-28 |
EP1995280B1 (en) | 2016-08-24 |
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