JP2002201351A - Polyamide-based resin composition and molded part therefrom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polyamide-based resin composition capable of being suitably used for electrical parts, such as connectors in electronic/electrical fields and connectors of automobiles, for which flame retardance and weld strength are required. SOLUTION: This polyamide-based resin composition contains (A) a polyamide, (B) an organohalogen-based flame retardant in an amount of 2-80 pts.wt. based on 100 pts.wt. of the component (A), (C) an auxiliary flame retardant in an amount of 0-50 pts.wt. based on 100 pts.wt. of the component (A), and (D) an ionomer resin partially neutralized with monovalent cations in an amount of 4.5-70 based on 100 pts.wt. of the component (B).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyamide resin composition having an organic halogen-based flame retardant and a molded product thereof. More specifically, the present invention relates to a polyamide resin composition having an organic halogen-based flame retardant which is suitably used for components such as connectors in the electronic and electric fields which require flame retardancy and weld strength, and electrical components such as connectors for automobiles.

[0002]

2. Description of the Related Art Polyamide resins have been used in the fields of electric / electronic parts, automobile parts, machine parts, etc., utilizing the properties of good mechanical properties, moldability and chemical resistance. In particular, in the field of electric and electronic parts, in recent years, the required level of flame retardancy has become increasingly higher, and a higher degree of flame retardancy is required than the self-extinguishing property inherent to polyamide resin.
Investigations have been made to improve the flame retardancy level based on the L-94 standard.

[0003] The conventional flame-retarding technology of polyamide resin is generally to add a halogen-based flame retardant. For example,
Addition of a chlorine-substituted polycyclic compound to a polyamide resin (JP-A-48-29846) or addition of a bromine-based flame retardant, for example, decabromodiphenyl ether (JP-A-47-47)
-7134), addition of brominated polystyrene (JP-A-51-47044, JP-A-4-175371), addition of brominated polyphenylene ether (JP-A-54-116054), bromination crosslinking Addition of aromatic polymer (JP-A-63-317552), addition of brominated styrene-maleic anhydride polymer (JP-A-3-16
No. 8246), and these flame retardants have often been used in combination with a flame retardant auxiliary such as antimony oxide.

[0004]

In recent years, with the technological progress of electronic and electric parts, the direction of lighter, thinner and shorter has been rapidly pursued, and unprecedented thin and small products have been developed and put to practical use. . In such a movement, the polyamide composition using brominated polystyrene as a flame retardant has a problem that when a molded product having a weld portion in a thin portion is injection-molded, the mechanical strength of the thin portion is insufficient. understood. This has not been experienced with conventional ordinary thick products.

[0005]

The present inventors have conducted intensive studies on this new problem, and as a result, have found that the weld characteristics of parts molded from a polyamide resin containing an organic halogen-based flame retardant have a morphological property. Focusing on suppressing the deformation due to the share of the dispersed particles of the organic halogen-based flame retardant in the polyamide matrix to enhance the weld property, the polyamide resin containing the organic halogen-based flame retardant was partially used. By adding an ionomer resin neutralized with a monovalent cation to the polymer, the orientation of the disperse phase of the organic halogen-based flame retardant in the weld portion can be suppressed, thereby significantly improving the weld strength and elongation. The present invention has been completed.

That is, the polyamide resin composition of the first embodiment of the present invention comprises (A) a polyamide and (B) 2 to 80 parts by weight of an organic halogen-based resin per 100 parts by weight of the component (A). (C) 0 to 50 parts by weight of a flame retardant aid per 100 parts by weight of the component (A), and (D) 4.5 to 70 parts by weight of 100 parts by weight of the component (B). And an ionomer resin partially neutralized with a monovalent cation.

In the first embodiment, it is preferable that the composition further contains 5 to 70% by weight of a reinforcing material based on the total weight of the composition (E). Further, (E) the reinforcing material is preferably an inorganic filler other than metal fibers and carbon fibers.

[0008] In any of the above polyamide resin compositions, 2 to 6 parts by weight per 100 parts by weight of component (A) (F).
It is preferable to further contain 0 parts by weight of a phenolic resin.

A polyamide resin molded article according to a second embodiment of the present invention is characterized by being molded from any of the above polyamide resin compositions. The molded product may be an injection molded product having a thin portion, and the thin portion may be a molded product having a weld portion.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The component (A) used in the present invention is a polymer having an amide bond, a polymer obtained by polycondensation of an organic diamine and an organic dicarboxylic acid, and a polymer obtained by polycondensation of aminocaproic acid. And polymers obtained by ring-opening lactams.

Examples of organic diamines include ethylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, 1,7-diaminoheptane, 1,8-diaminooctane, 1,9-diaminononane, 10-diaminodecane, 1,11-diaminoundecane, 1,12-diaminododecane, 2-methylpentamethylenediamine, 2-
Aliphatic diamines such as ethyltetramethylenediamine,
1,3-diaminocyclohexane, 1,4-diaminocyclohexane, 1,3-bis (aminomethyl) cyclohexane, bis (aminomethyl) cyclohexane, bis (4
Alicyclic diamines such as -aminocyclohexyl) methane, 4,4'-diamino-3,3'-dimethyldicyclohexylmethane, isophoronediamine, and piperazine;
Paraphenylenediamine, orthophenylenediamine,
Examples thereof include aromatic diamines such as metaphenylenediamine, paraxylenediamine, and metaxylenediamine, and these can be used alone or in combination of two or more, but are not limited thereto.

Examples of the organic dicarboxylic acids include aliphatic dicarboxylic acids such as succinic acid, adipic acid, azelaic acid, sebacic acid, dodecandioic acid, terephthalic acid, isophthalic acid, phthalic acid, 2-methylterephthalic acid, and naphthalenedicarboxylic acid. And the like, and these can be used alone or in combination of two or more, but are not limited thereto.

Examples of the aminocaproic acid include ε-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, and paraaminobenzoic acid. These can be used alone or in combination of two or more. It is not limited to these.

Examples of lactams include ε-caprolactam and ω-laurolactam, but are not limited thereto.

The polyamide used in the present invention may be a homopolymer, a copolymer, or a blend thereof.

The above-mentioned specific examples include the following, but are not limited thereto. For example,
Nylon 66, Nylon 6, Nylon 11, Nylon 1
2, nylon 46, nylon 610, nylon 612,
Nylon 66/6, Nylon 66 / 6T, Nylon 66
/ 6I, nylon 6T / 6I, nylon 9T, nylon 66 / 6T / 6I, nylon 66 / 6T / 612, nylon MXD6, and the like, and one or more kinds of polyamides can be used.

As the component (B) flame retardant used in the present invention, chlorine-based flame retardants, bromine-based flame retardants and the like are generally used.

Examples of the chlorine-based flame retardant include dodecachloropentacyclooctadeca-7,15-diene and the like, and specifically, Dechlorane Plus 25 (registered trademark) manufactured by Oxydental Chemical Company.

As the brominated flame retardant, brominated polystyrene, brominated cross-linked aromatic polymer, brominated styrene maleic anhydride polymer, brominated styrene glycidyl (meth) acrylate polymer, brominated polyphenylene ether, brominated polyphenylene oxide , A brominated epoxy resin, a brominated phenoxy resin, and the like, but are not limited thereto.

Examples of the above are Pyrocheck 68PB (registered trademark) manufactured by Ferro Corporation and Pyrocheck 68P
B-LM <registered trademark>, PDBS manufactured by Great Lakes Co.
-80 <registered trademark>, PDBS-10 <registered trademark>, EBR-370FK <registered trademark> manufactured by Manac, PO64P <registered trademark> manufactured by Great Lakes, F2400 <registered trademark> manufactured by Maktesim, Great Lakes CN-
2044 <registered trademark>, CN-2044C <registered trademark>
And the like.

Among them, brominated flame retardants are preferred from the viewpoint of flame retardancy and thermal decomposition resistance, and among them, brominated polystyrene, brominated polyphenylene ether, and brominated polyphenylene oxide are particularly preferred from the viewpoint of heat resistance and non-bleed-out property. ,
A brominated styrene glycidyl (meth) acrylate polymer and a brominated crosslinked aromatic polymer are preferred, and a brominated polystyrene and a brominated styrene glycidyl (meth) acrylate polymer are particularly preferred.

Component (B) is added in an amount of 10 to 100 parts by weight, preferably 2 to 100 parts by weight of polyamide.
0 to 100 parts by weight. If the amount is less than the predetermined amount, the flame-retardant effect is not sufficient, and if the amount exceeds the predetermined amount, the mechanical strength of the thin weld portion is significantly reduced.

In the present invention, it is effective to add, in addition to the above-mentioned flame retardant, a component (C) exhibiting a flame retarding effect as a flame retardant auxiliary. By doing so, the amount of the flame retardant added can be reduced. Examples of the usable flame retardant aid include antimony compounds such as antimony trioxide, antimony pentoxide and sodium antimonate, zinc oxide, iron oxide, tin oxide, calcium oxide, magnesium oxide, aluminum oxide, copper oxide, titanium oxide and the like. is there. Zinc borate is also known as an effective compound.

Component (C) is added in an amount of polyamide 100
It is about 0 to 50 parts by weight, preferably about 1 to 30 parts by weight with respect to parts by weight, and can be used alone or in combination of two or more. If the amount is too large, the mechanical strength of the entire composition decreases, which is not preferable.

Component (D) used in the present invention
An ionomer neutralized with a monovalent cation is an ionically crosslinked polymer in which at least a part of the base polymer is neutralized with a monovalent cation. Any ionomer neutralized with a monovalent cation can be used without particular limitation.

Specific examples of the base polymer include an ethylene / unsaturated carboxylic acid copolymer.
Further, other unsaturated monomer components other than ethylene and unsaturated carboxylic acid may be copolymerized. Further, as long as the sum satisfies the above conditions, two or more kinds of unsaturated carboxylic acid component units may be used.

Examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, ethacrylic acid, maleic acid, fumaric acid, maleic acid monomethyl ester, maleic acid monoethyl ester, maleic anhydride, itaconic acid and the like.

Other unsaturated monomer components include, for example, acrylic esters such as methyl (meth) acrylate, ethyl (meth) acrylate, isobutyl (meth) acrylate, and n-butyl (meth) acrylate; Examples include methacrylic acid esters and vinyl acetate.

The monovalent cation is an alkali metal such as lithium, sodium and potassium. The degree of neutralization by cations is not particularly limited, but those having an average degree of neutralization of 10 mol% or more, preferably 15 to 80 mol% are suitable.

Component (D) is added in an amount of 4.5 to 70 parts by weight per 100 parts by weight of (B) organohalogen-based flame retardant component.
It is preferably about 5.0 to 40 parts by weight, and can be used alone or in combination of two or more. If the addition amount is less than the above range, sufficient improvement in weld strength cannot be obtained, and in a system containing a phenol resin, the flame retardancy will not be sufficiently exhibited. On the other hand, if the added amount is too large, the flame retardancy and mechanical strength are undesirably reduced.

It is desirable to reinforce the composition of the present invention with (E) a reinforcing agent. Because electronic and electric parts are becoming thinner,
This is because the rigidity of the non-reinforced polyamide is insufficient. Reinforced materials tend to have little dimensional change due to water absorption and have a high heat distortion temperature. Known reinforcing agents and fillers for nylon can be used as the reinforcing agent. For example, glass fiber, carbon fiber, potassium titanate fiber, gypsum fiber, brass fiber, stainless steel fiber, steel fiber, ceramic fiber, boron whisker fiber, mica, talc, silica, calcium carbonate, glass beads, glass flake, clay, wollast Examples include fibrous, powdery, or plate-like inorganic fillers such as knight, titanium oxide, and hydrotalcite, and aromatic aramid fibers.

These fillers may be used alone or in combination of two or more. In particular, glass fibers are preferably used in the filler. The type of glass fiber is not particularly limited as long as it is used for general resin reinforcement, and it can be selected from short fiber type or long fiber type chopped strand, milled fiber, or the like. In addition, glass fiber, ethylene / vinyl acetate copolymer,
It may be coated or bundled with a resin such as a urethane-based, acrylic-based, epoxy-based, or polyester-based resin, or may be treated with a silane-based, titanate-based coupling agent, or another surface treatment agent.

The amount of the reinforcing agent (E) is from 1 to 70% by weight, preferably from 5 to 7% by weight, based on the total weight of the composition.
0% by weight, more preferably 10 to 50% by weight. If the amount of reinforcing agent is too small, its effect is insufficient,
If the amount is too large, the fluidity at the time of molding becomes poor, the surface of the molded product becomes rough, and short shots occur.

In the present invention, it is effective to add (F) a phenolic resin. In this way, the flame retardancy is improved, so that the amount of the flame retardant to be added can be reduced. As a result, not only the weld strength is improved but also the moisture resistance is improved, so that it can be used in applications requiring dimensional stability. Becomes possible.

The phenolic resin (F) used in the present invention is not particularly limited as long as it is a polymer having a plurality of phenolic hydroxyl groups. For example, novolak-type, resol-type and heat-reactive resins, or modified resins thereof Resins. These may be an uncured resin, a semi-cured resin, or a cured resin without a curing agent added.

As the (F) phenolic resin which can exert the effect of the present invention most, a phenol novolak resin which is non-thermally reactive without adding a curing agent can be exemplified.
This is based on the flame retardancy in UL94 standard, high critical oxygen index, flame retardancy and mechanical properties in actual molded products, fluidity, strength and surface appearance of welded parts of final molded products, and economic It is particularly preferred in terms of properties.

The above-mentioned phenol novolak resin which is non-thermally reactive without the addition of a curing agent may be modified with an aromatic hydrocarbon resin, an epoxy resin, boric acid or the like.

Further, the shape is not particularly limited, and any of pulverized products, granules, flakes, powders, needles, and liquids can be used.

The phenolic resin (F) can be used alone or in combination of two or more, if necessary. (F)
The phenolic resin is not particularly limited, and a commercially available resin may be used. For example, in the case of a novolak type phenol resin, the phenolic resin is charged into a reaction tank at a molar ratio of phenols to aldehydes of 1: 0.7 to 1: 0.9, and further, oxalic acid and hydrochloric acid After adding a catalyst such as sulfuric acid or toluenesulfonic acid, the mixture is heated and refluxed for a predetermined time, and then subjected to vacuum dehydration or standing dehydration to remove generated water. And the like. These resins or co-condensed phenol resins obtained by using a plurality of raw material components can be used alone or in combination of two or more.

The resol-type phenol resin is charged into a reaction vessel at a molar ratio of phenols to aldehydes of 1: 1 to 1: 2, and sodium hydroxide, ammonia water, and other basic substances are charged. After the addition of such a catalyst, the same reaction and treatment as for the novolak-type phenol resin can be performed.

Here, phenols are phenol, o
-Cresol, m-cresol, p-cresol, thymol, p-tert-butylphenol, tert-butylcatechol, catechol, isoeugenol, o-
Methoxyphenol, 4,4'-dihydroxyphenyl-2,2-propane, isoamyl salicylate, benzyl salicylate, methyl salicylate, 2,6-di-tert
-Butyl-p-cresol and the like. One or more of these phenols can be used.
On the other hand, aldehydes include formaldehyde, paraformaldehyde, polyoxymethylene, trioxane and the like. One or more of these aldehydes can be used as needed.

The molecular weight of the phenolic resin (F) is not particularly limited, but is preferably 200 to 2, in terms of number average molecular weight.
000, particularly preferably in the range of 400 to 1,500. Above all, novolak type phenol resins having a number average molecular weight in the range of 400 to 1500 are flame-retardant in UL94 standard, high in limiting oxygen index, flame-retardant and mechanical physical properties in actual molded products, moldability, and Excellent in economy and preferred.

In the present invention, the amount of the phenolic resin (F) is from 2 to 60 parts by weight per 100 parts by weight of the component (A).
Parts by weight, preferably 5 to 50 parts by weight. When the compounding amount of the (F) phenolic resin is within the above range, the flame retardancy, the limiting oxygen index, the weld strength and the flame retardancy in an actual molded product, the fluidity, and the surface appearance are improved.

The resin composition of the present invention may contain a low water-absorbing resin other than the halogen-free component (F) as long as the properties of the composition of the present invention are not impaired. Examples of such low water absorbing resin, polyolefin resin, ABS resin, atactic polystyrene resin, syndiotactic polystyrene resin, polyphenylene ether resin, polyphenylene oxide resin,
Examples thereof include polyarylate and liquid crystalline resin, and these may be used alone or in combination of two or more as necessary.

As a method for alloying the above low water-absorbing resin in the composition of the present invention so as not to impair the properties of the composition of the present invention, various known alloying techniques can be used. For example, in the low water-absorbing resin, a method in which a functional group-containing compound that reacts with polyamide is modified by copolymerization or grafting and then alloyed, or the modified low water-absorbing resin is used as a compatibilizer, Or a method of alloying with a different compatibilizable low water absorbing resin,
A method using a low-molecular or high-molecular compound having both a site that reacts with the low water-absorbent resin and a site that reacts with the polyamide as a compatibilizer is exemplified.

In the composition of the present invention, a copper compound, a salt of a halogen and a metal, a hindered phenol,
A sulfur-containing compound, an organic phosphorus compound, an amine compound, or the like may be added. As a lubricant, metal stearates,
Ethylenebisstearylamide, montanic acid ester,
A metal montanate, polyethylene glycol, mineral oil, or the like may be added. Further, a coloring agent, a plasticizer, an ultraviolet absorber, an antistatic agent and the like can be added.

The method for producing the resin composition of the present invention is not particularly limited. For example, a polyamide resin, a specific flame retardant,
In addition to a specific flame retardant auxiliary, a specific ionomer, and a filler, if necessary, a mixture of a compatibilizer, a phosphorus-based compound, a metal compound, and the other additives such as the additives described above may be mixed with a monoaxial or multiaxial additive. Using a known melt kneader such as an extruder, a kneader, a mixing roll, and a Banbury mixer, 200
A method of melting and kneading at a temperature of about 400 ° C. can be used. In particular, it can be melt-kneaded using an extruder.

Further, after a mixture composed of some components of the resin composition of the present invention is melt-kneaded, a mixture containing the remaining components is blended and molded before molding. After preparing a masterbatch made of a polyamide resin containing a component, the present resin composition may be finally prepared.

In the melt kneading of the resin composition of the present invention,
In addition, in the molding after blending, the method of adding the components, the order, and the like are not limited.

The resin composition of the present invention can produce a molded article having a desired shape by using a conventional melt molding method, for example, an injection molding method, a compression molding method, or an extrusion molding method. .

The resin composition of the present invention is particularly preferably used when injection molding a thin part having a thin part in a weld part.

[0052]

EXAMPLES The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

The properties described in Examples and Comparative Examples were evaluated by the following methods.

(Evaluation method) (1) Tensile strength of thin welded part: A molded piece was prepared using a mold in which a welded part was formed at the center of a dumbbell-type tensile test piece having a thickness of 0.8 mm. The tensile strength of the weld was measured. (2) Flexural strength of a thin welded part: A molded piece is prepared using a mold in which a welded part is formed at the center of a rectangular bending test piece having a thickness of 0.8 mm, and the flexural strength of the welded part is measured. did. (3) Flame retardancy: United States UNDER WRITERS LAB
It was measured in accordance with UL-94 standard specified by ORATORIES. The test was performed on a test piece having a thickness of 1/32 inch. (4) Water absorption: An ISO type tensile test specimen having a thickness of 4 mm was molded by injection molding, and the weight was measured immediately after molding. The plate was left standing at 60 ° C. and 95% humidity for 192 hours, taken out, wiped with a dry cloth, weighed again, and the water absorption was determined.

The components in the following Examples and Comparative Examples are as shown below. (Polyamide) PA-1: Nylon 66 PA-2: Nylon 66 / 6T (45/55 mol%) (Organic halogen flame retardant) FR-1: Brominated polystyrene, Pyrocheck 68PB manufactured by Fellows (bromine content 67%) FR-2: Brominated polystyrene / glycidyl methacrylate copolymer, CN-2044, manufactured by Great Lakes Co.
C (bromine content 65%) FR-3: brominated polystyrene, Setex HP-7010G manufactured by Fellows (bromine content 67%) FR-4: brominated polystyrene, PDBS-80 manufactured by Great Lakes (bromine content) (Flame retardant aid) SY-1: polyethylene masterbatch containing 80% antimony trioxide, FSPO405 (ionomer) manufactured by PPC IO-1: Na ionomer of ethylene / methacrylic acid copolymer, DuPont Mitsui Polychemicals Company High Milan
1707 IO-2: Li ionomer of ethylene / methacrylic acid copolymer, Surlyn 7 manufactured by DuPont-Mitsui Polychemicals
930 IO-3: Zn ionomer of ethylene / methacrylic acid copolymer, Himilan manufactured by DuPont-Mitsui Polychemicals
1706 IO-4: Mg ionomer of ethylene / methacrylic acid copolymer, Himilan manufactured by DuPont-Mitsui Polychemicals
AM7311 (Ethylene / methacrylic acid copolymer) EMA: Nuclell N manufactured by DuPont-Mitsui Polychemicals
1560 (glass fiber) GF: TP64 (phenol resin) manufactured by Nippon Sheet Glass Co., Ltd. PN: uncured phenol novolak resin, HRJ12700 (lubricant) manufactured by Schenectady LB-1: aluminum stearate

(Examples 1 to 8, Comparative Examples 1 to 9) Each component was blended in the ratio (weight) shown in Table 1, melt-kneaded with a twin-screw extruder (TEM-35 manufactured by Toshiba Corporation), and cooled with water. Pellets were produced. The obtained pellets were injection molded at a resin temperature of 295 ° C. and a mold temperature of 80 ° C. to prepare test pieces for each evaluation. Table 1 shows the results.

[0057]

[Table 1]

[0058]

[Table 2]

[0059]

[Table 3]

The results show that the addition of the ionomer resin partially neutralized with a monovalent cation improves the weld strength.

(Examples 9 to 13 and Comparative Example 10) Each component was blended in the ratio (weight) shown in Table 2 and a twin-screw extruder (W & P) was used.
The mixture was melt-kneaded with ZSK-40, manufactured by K.K. and cooled with water to produce pellets. The obtained pellets were injection molded at a resin temperature of 330 ° C. and a mold temperature of 80 ° C. to prepare test pieces for each evaluation.
Table 2 shows the results.

[0062]

[Table 4]

It can be seen that the addition of two components, a phenol resin and an ionomer resin, exhibits weld strength, flame retardancy, and moisture resistance that cannot be obtained by adding only one of the components.

[0064]

According to the present invention, it is possible to provide a flame-retardant polyamide resin composition which is required to have flame retardancy and is suitable for applications such as injection molded articles having a thin weld portion.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // (C08L 77/00 (C08L 77/00 23:26 23:26 61:00) 61:00) B29K 77:00 B29K 77:00 105: 06 105: 06 (72) Inventor Reiko Koshida 19-2 Kiyohara Industrial Park, Utsunomiya City, Tochigi Pref. AE17 AF47 AH12 BA01 BB05 BC07 4F206 AA29K AB11 AB19 JA07 JF01 4J002 BB23Y BC11X CC03Z CC09X CC10Z CD12X CH07X CL001 CL011 CL021 CL031 CL051 DA018 DA078 DA088 DA118 DE077 DE087 DE097 DE107 DE117 DE147 DE138 DE138 DE138 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 DE137 FD018 FD13X FD136 FD137 GQ00

Claims (6)

[Claims] 1. A polyamide resin composition comprising the following components (A) to (D). (A) polyamide, (B) 2 to 80 parts by weight of an organic halogen-based flame retardant based on 100 parts by weight of the component (A),
(C) 0 to 50 parts by weight of a flame retardant aid per 100 parts by weight of component (A), and (D) 4.5 to 70 parts by weight of 100 parts by weight of component (B) Resin ionically neutralized with monovalent cation 2. (E) 5-7 based on the total weight of the composition.
The polyamide resin composition according to claim 1, further comprising 0% by weight of a reinforcing material. 3. The polyamide resin composition according to claim 2, wherein (E) the reinforcing material is a filler other than metal fibers and carbon fibers. 4. The polyamide-based material according to claim 1, further comprising (F) 2 to 60 parts by weight of a phenolic resin based on 100 parts by weight of the component (A). Resin composition. 5. A polyamide resin molded article formed from the polyamide resin composition according to any one of claims 1 to 4. 6. The molded article according to claim 5, wherein the polyamide resin molded article is an injection molded article having a thin part, and the thin part has a weld part.