WO2022158383A1

WO2022158383A1 - Flame-retardant polyamide resin composition and molded article comprising same

Info

Publication number: WO2022158383A1
Application number: PCT/JP2022/001087
Authority: WO
Inventors: 和樹岩村; 信宏吉村; 誠玉津島; 亮梅木
Original assignee: 東洋紡株式会社
Priority date: 2021-01-22
Filing date: 2022-01-14
Publication date: 2022-07-28
Also published as: JPWO2022158383A1; CN116724079A; TW202237744A

Abstract

[Problem] To provide a flame-retardant polyamide resin composition having little bleed-out of flame retardant and exceptional thermal discoloration resistance, moldability, snap fit of parts, etc., while having flame retardancy at the UL 94V-0 level over a wide range of thickness. [Solution] A flame-retardant polyamide resin composition characterized by: containing a polyamide resin (A) and melamine cyanurate (B); containing 90-98 parts by mass of the polyamide resin (A) and 2-10 parts by mass of the melamine cyanurate (B) relative to a total of 100 parts by mass of the components (A) and (B); being such that the proportion of a polyamide 66 resin (A1) in the polyamide resin (A) is 55-85 mass%, and the proportion of a polyamide 6 resin (A2) in the polyamide resin (A) is 15-45 mass%; and containing 0.01-1 part by mass of a phosphorus-based antioxidant (C), 0.01-1 part by mass of a hindered-phenol-based antioxidant (D), and 0.1-1 part by mass of a C22 or lower fatty acid metal-salt-based lubricant (E) relative to a total of 100 parts by mass of the components (A) and (B).

Description

Flame-retardant polyamide resin composition and molded article made of same

The present invention relates to a non-halogen flame-retardant polyamide resin composition. More specifically, it relates to a halogen-free, flame-retardant polyamide resin composition having high flame retardancy, good snap-fitting properties, and excellent resistance to heat discoloration.

Polyamide resins are used in various fields such as electric/electronic parts and automobile parts, taking advantage of their excellent mechanical properties, electrical properties, chemical resistance, and the like. In these fields, melamine cyanurate is used as a flame retardant when non-reinforced and non-halogen flame retardants are required to impart flame retardancy (for example, Patent Documents 1 and 2).
However, melamine cyanurate has poor dispersibility in polyamide resins, and when the amount is increased, the mechanical properties of polyamide resins are reduced, bleeding occurs, and thermal decomposition causes melamine and cyanuric acid to decompose and sublimate easily. The melamine and cyanuric acid have drawbacks, such as generation of silver on the surface of the molded product during molding and contamination of the mold surface.

In recent years, the level of various requirements for electrical and electronic parts, automobile parts, etc. has increased, and flame retardancy is required to meet the UL94 V-0 level in various thicknesses. A higher level of formability, snap-fitting of parts, etc. is now desired.

Japanese Patent Publication No. 58-25379 Japanese Patent Publication No. 58-35541

The present invention is a flame-retardant polyamide resin that has UL94V-0 level flame retardancy over a wide range of thicknesses, less bleeding of flame retardants, excellent heat discoloration resistance, moldability, and snap-fitting of parts. A composition is provided.

The present inventors have completed the present invention as a result of intensive research to solve the above problems.

That is, the present invention has the following configurations.
- Contains polyamide resin (A) and melamine cyanurate (B), and 90 to 98 parts by mass of polyamide resin (A) and melamine cyanurate ( B) contained at a rate of 2 to 10 parts by mass, phosphorus antioxidant (C) 0.01 to 1 part by mass, hindered phenol antioxidant (D) 0.01 to 1 part by mass, and carbon number 22 or less fatty acid metal salt-based lubricant (E) in a proportion of 0.1 to 1 part by mass, the polyamide resin (A) is 55 to 85 mass% of polyamide 66 resin (A1), polyamide 6 resin (A2) A flame-retardant polyamide resin composition containing 15 to 45% by mass.
[2] The flame-retardant polyamide resin composition according to [1], wherein the fatty acid metal salt-based lubricant (E) is a metal salt of stearic acid.
[3] A molded article made of the flame-retardant polyamide resin composition according to any one of [1] to [2].
[4] The molded article according to [3], which is any one of a ferrite core cover, an ESC lock, a binding band, and an electrical wiring protection member.

The flame-retardant polyamide resin composition of the present invention not only has excellent heat discoloration resistance and moldability, but also does not significantly impair breaking strength and toughness, and has UL94V-0 level flame retardancy over a wide range of thickness. .

The present invention will be specifically described below.
[Polyamide resin (A)]
The polyamide resin (A) in the present invention is not particularly limited as long as it is a polymer having an amide bond (--NHCO--) in its main chain. Polyamide resin (A) is preferably crystalline, for example, polyamide 6 (PA6), polyamide 66 (PA66), polyamide 46 (PA46), polyamide 11 (PA11), polyamide 12 (PA12), polyamide 610 (PA610 ), polyamide 612 (PA612), polymetaxylylene adipamide (PAMXD6), hexamethylenediamine-terephthalic acid polymer (PA6T), hexamethylenediamine-terephthalic acid and adipic acid polymer (PA6T/66), hexamethylenediamine - terephthalic acid and ε-caprolactam copolymer (PA6T/6), trimethylhexamethylenediamine-terephthalic acid polymer (PATMD-T), meta-xylylenediamine and adipic and isophthalic acid copolymer (PAMXD6/MXDI), tri Examples include crystalline polyamide resins such as hexamethylenediamine, terephthalic acid and ε-caprolactam copolymer (PATMDT/6), diaminodicyclohexylenemethane, isophthalic acid and lauryllactam copolymer, or blends thereof. are possible, but not limited to these.

The blending amount (content) of the polyamide resin (A) is 90 to 98 parts by mass when the total of the polyamide resin (A) and melamine cyanurate (B) is 100 parts by mass. When the blending amount of the polyamide resin (A) is within this range, the composition can be provided with suppression of bleeding of the flame retardant and retention of high flame retardancy. The blending amount (content) of the polyamide resin (A) is preferably 92 to 96 parts by mass, more preferably 93 to 95 parts by mass. In the flame-retardant polyamide resin composition of the present invention, the blending amount of each component becomes the content as it is.

The polyamide resin (A) in the present invention is preferably a mixture of polyamide 66 resin (A1) and polyamide 6 resin (A2) in terms of excellent moldability, melt fluidity and flame retardancy.

Examples of the polyamide 66 resin (A1) in the present invention include polyamide 66 resins obtained by polycondensation of adipic acid and hexamethylenediamine as raw materials. The relative viscosity of the polyamide 66 resin (A-1) is preferably 2.2 to 3.5 as measured according to JIS K6810 at a concentration of 1% in 98% sulfuric acid at a temperature of 25°C. If the relative viscosity is less than 2.2, the mechanical properties tend to deteriorate, and if it exceeds 3.5, the melt fluidity tends to be insufficient. The relative viscosity of the polyamide 66 resin (A1) is more preferably 2.3-3.0. Polyamide 66 resin (A1) may be adjusted to a preferable relative viscosity range by mixing polyamide 66 resins having different relative viscosities.

Although the terminal amino group concentration of the polyamide 66 resin (A1) is not particularly limited, it is preferably 50 to 90 eq/ton, more preferably 60 to 80 eq/ton in terms of heat discoloration resistance.

The blending amount of the polyamide 66 resin (A1) is preferably 55 to 85 parts by mass based on 100 parts by mass of the polyamide resin (A). When the amount of the polyamide 66 resin (A1) exceeds 85 parts by mass, the hinge property (snap-fitting property) is deteriorated. The blending amount of the polyamide 66 resin (A1) is more preferably 60 to 80 parts by mass from the viewpoint of the balance between the snap fit property and the moldability.

The polyamide 6 resin (A2) in the present invention is a polyamide 6 resin obtained by polycondensation using ε-caprolactam as a raw material. The relative viscosity of the polyamide 6 resin (A2) is preferably 1.5 to 4.0 as measured according to JIS K6810 at a concentration of 1% in 98% sulfuric acid at a temperature of 25°C. If the relative viscosity is less than 1.5, the mechanical properties tend to deteriorate, and if it exceeds 3.6, flame retardancy and fluidity tend to be impaired. The relative viscosity of the polyamide 6 resin (A2) is more preferably 1.8-3.6. The polyamide 6 resin (A-2) may be adjusted to a preferable relative viscosity range by mixing polyamide 6 resins having different relative viscosities.

Although the terminal amino group concentration of the polyamide 6 resin (A2) is not particularly limited, it is preferably 50 to 90 eq/ton, more preferably 60 to 80 eq/ton in terms of heat discoloration resistance.

The blending amount of the polyamide 6 resin (A2) is preferably 15 to 45 parts by mass based on 100 parts by mass of the polyamide resin (A). If the amount of the polyamide 6 resin (A2) is less than 15 parts by mass, the hinge properties (snap fit properties) tend to deteriorate, and if it exceeds 45 parts by mass, the moldability tends to deteriorate. The blending amount of the polyamide 6 resin (A2) is more preferably 20 to 40 parts by mass from the viewpoint of the balance between snap-fitting properties and moldability.

An amorphous polyamide resin (A3) can also be blended in order to improve the appearance of the molded product.
Amorphous polyamide resins include 4,4'-diamino-3,3'-dimethyldicyclohexylmethane (CA), 4,4'-diaminodicyclohexylmethane (PACM), metaxylylenediamine (MXD), trimethylhexamethylene. Diamines such as diamine (TMD), isophoronediamine (IA), 4,4'-diaminodicyclohexylpropane (PACP), hexamethylenediamine, and dicarboxylic acids such as terphthalic acid, isophthalic acid, adipic acid, sebacic acid and dodecanedicarboxylic acid Polymers, copolymers or blends obtained by polycondensation from acids and lactams such as caprolactam and lauryllactam can be exemplified. The amount of the amorphous polyamide resin (A3) to be blended is more preferably 0 to 15 parts by mass from the viewpoint of the balance between snap-fitting properties and moldability.

[Melamine cyanurate (B)]
Melamine cyanurate (B) in the present invention is preferably an equimolar reaction product of cyanuric acid and melamine. Moreover, some of the amino groups or hydroxyl groups in the melamine cyanurate may be substituted with other substituents. Melamine cyanurate can be obtained, for example, by mixing an aqueous solution of cyanuric acid and an aqueous solution of melamine, reacting the mixture with stirring at 90 to 100° C., and filtering the resulting precipitate. Although the obtained solid can be used as it is, it is preferable to use it after pulverizing it, if necessary. Although the particle size is not particularly limited, the average particle size is preferably 0.5 to 20 μm, more preferably 1 to 15 μm, from the viewpoint of flame retardancy and toughness.

The blending amount (content) of melamine cyanurate (B) is 2 to 10 parts by mass when the total of polyamide resin (A) and melamine cyanurate (B) is 100 parts by mass. It is 2 parts by mass or more from the viewpoint of flame retardancy, and 10 parts by mass or less from the viewpoint of snap fit and bleeding. It is more preferably 3 to 9 parts by mass, still more preferably 4 to 8 parts by mass.

[Phosphorus-based antioxidant (C)]
The phosphorus-based antioxidant (C) in the present invention may be either an inorganic compound or an organic compound, and is not particularly limited. Preferred phosphorus compounds include inorganic phosphates such as monosodium phosphate, disodium phosphate, trisodium phosphate, sodium phosphite, calcium phosphite, magnesium phosphite, manganese phosphite, triphenylphosphite, Phyte, Trioctadecylphosphite, Tridecylphosphite, Triisodecylphosphite, Trinonylphenylphosphite, Diphenylisodecylphosphite, Diphenylalkylphosphite, Phenyldialkylphosphite, Tris(nonylphenyl)phosphite, Trilauryl Phosphite, distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite, diisodecylpentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite Phosphites, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, diisodecyloxypentaerythritol diphosphite, bis(2,4-di-tert-butyl-6-methylphenyl) ) pentaerythritol diphosphite, bis(2,4,6-tris(tert-butylphenyl))pentaerythritol diphosphite, tristearylsorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl)-4 ,4′-biphenylenediphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenzo[d,g]-1,3,2-dioxaphosphosine, 6 -fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenzo[d,g]-1,3,2-dioxaphosphosine, bis(2,4-di-tert-butyl -6-methylphenyl)methyl phosphite and bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite and the like, which are blended to enhance resistance to heat discoloration.

A phosphite compound is preferable as the phosphorus-based antioxidant (C). Among the phosphite compounds, compounds having a pentaerythritol diphosphite skeleton are preferred. Specifically, bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite (“ADEKASTAB PEP-36”, molecular weight 633), bis(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (“ADEKASTAB PEP-24G”, molecular weight 604), distearylpentaerythritol diphosphite (“ADEKASTAB PEP-8”, molecular weight 733), bis(nonylphenyl) pentaerythritol diphosphite (“ Adekastab PEP-4C", molecular weight 633), which has a pentaerythritol diphosphite skeleton and a molecular weight of about 600 to 800, can further improve releasability without reducing flame retardancy. and snap-fitting properties.

The amount (content) of the phosphorus-based antioxidant (C) is 0.01 to 1 part by mass when the total of the polyamide resin (A) and melamine cyanurate (B) is 100 parts by mass. When the amount of the phosphorus-based antioxidant (C) is within this range, it is possible to suppress discoloration during extrusion processing and prevent secondary oxidative deterioration due to phosphorus-derived radicals. The content of the phosphorus antioxidant (C) is preferably 0.1 to 0.5 parts by mass.

[Hindered phenolic antioxidant (D)]
The hindered phenol-based antioxidant (D) in the present invention includes N,N'-hexamethylene-bis-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, bis(3 , 3-bis-(4′-hydroxy-3′-tert-butylphenyl)butanoic acid) glycol ester, 2,1′-thioethylbis(3-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionate, 4,4'-butylidene-bis(3-methyl-6-tert-butylphenol), triethylene glycol-3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionate "SONGNOX2450", molecular weight 633), etc., and mixtures of two or more of these can also be used.

The amount (content) of the hindered phenol-based antioxidant (D) is 0.01 to 1 part by mass when the total of the polyamide resin (A) and melamine cyanurate (B) is 100 parts by mass. When the amount of the hindered phenol-based antioxidant (D) is within this range, oxidative deterioration over time can be prevented with an appropriate amount according to the coordination bonds of the polyamide composition. The content of the hindered phenol-based antioxidant (D) is preferably 0.1 to 0.5 parts by mass.

[Fatty acid metal salt-based lubricant having 22 or less carbon atoms (E)]
Examples of the fatty acid metal salt-based lubricant (E) having 22 or less carbon atoms in the present invention include metal salts of fatty acids such as stearic acid, palmitic acid and behenic acid. By using a fatty acid metal salt-based lubricant with a carbon number of 22 or less, not only is the releasability improved, but the temperature at which fatty acid-derived combustion gas starts to be generated during combustion and the generation of non-combustible gas generated by the decomposition of melamine cyanurate. Since the temperatures are close to each other, ignition of combustible gas can be prevented, so flame retardancy tends to be exhibited even better.

A metal salt of an aliphatic carboxylic acid having 18 or less carbon atoms is more preferable, and an alkali metal or alkaline earth metal salt such as stearic acid or palmitic acid is more preferable from the viewpoint of achieving both releasability and flame retardancy. Alkali metals or alkaline earth metals include, for example, lithium, sodium, magnesium, calcium salts and the like. In particular, the alkali metal or alkaline earth metal salt of stearic acid has the same starting temperature for generating combustible gas derived from fatty acid by decomposition of fatty acid metal salt and non-combustible gas generated by decomposition of melamine cyanurate during combustion, so it is flame retardant by addition. It is optimal because it can improve the releasability without causing a decrease in the

The blending amount (content) of the fatty acid metal salt-based lubricant (E) is 0.1 to 1 part by mass when the total of the polyamide resin (A) and melamine cyanurate (B) is 100 parts by mass. If the amount exceeds 1 part by mass, the flame retardancy may deteriorate. The amount of the fatty acid metal salt-based lubricant (E) to be blended is preferably 0.2 to 0.8 parts by mass.

[Other ingredients]
In addition to (A), (B), (C), (D) and (E) described above, other Components such as colorants such as pigments and dyes, additives such as heat stabilizers, weather resistance improvers, nucleating agents, plasticizers, release agents and antistatic agents, and other resin polymers can be added. . In the flame-retardant polyamide resin composition of the present invention, the total of the components (A), (B), (C), (D), and (E) described above preferably accounts for 80% by mass or more, More preferably, it accounts for 90% by mass or more, and even more preferably 95% by mass or more.

Suitable molded parts obtained using the flame-retardant polyamide resin composition of the present invention specifically include connectors, coil bobbins, breakers, electromagnetic switches and holders used in fields such as electric/electronic parts and automobile parts. Molded parts such as plugs, sockets, switches, cases, covers, etc. More specifically, parts that require heat discoloration resistance and snap fit properties such as ferrite core covers, ESC locks, cable ties, and electrical wiring protection members. is.

The method for producing the flame-retardant polyamide resin composition of the present invention is not particularly limited, and a general single-screw extruder, twin-screw extruder, pressure kneader, or the like can be used as a kneading device. A twin-screw extruder is particularly preferred. In one embodiment, the above (A), (B), (C), (D), and (E) and, depending on the application, pigments and the like are mixed and fed into a twin-screw extruder. A polyamide-based resin composition having excellent toughness and flame retardancy can be produced by uniformly kneading with a twin-screw extruder. The kneading temperature of the twin-screw extruder is preferably 220 to 300° C., and the kneading time is preferably about 2 to 15 minutes.

Although the present invention will be described in more detail below with reference to examples, the present invention is not limited by these examples.

The following components were used for each component.
polyamide resin (A);
A1-1: Polyamide 66 (RV = 2.8) Vydyne 21Z (manufactured by Ascend), melting point 265°C
A1-2: Polyamide 66 (RV = 2.4) EPR24 (manufactured by Shanghai Jinma Plastic Technology Co., Ltd.), melting point 265°C
A2-1: Polyamide 6 (RV = 2.0) M2000 (manufactured by MEIDA), melting point 225 ° C.
A2-2: Polyamide 6 (RV = 3.6) ZISAMIDE TP6603 (manufactured by Shusei), melting point 225°C

melamine cyanurate (B);
B: MC6000 (manufactured by Nissan Chemical Co., Ltd.)

phosphorus antioxidant (C);
C: ADEKA STAB PEP-36 (manufactured by ADEKA Corporation)

Hindered phenolic antioxidant (D);
D: SONGNOX2450 (manufactured by Songwon International Japan)

fatty acid metal salt-based lubricant (E);
E1: Magnesium stearate NP-1500S (manufactured by Tannan Chemical Industry Co., Ltd.)
other release agents;
E2: Calcium montanate CS-8-CP (manufactured by Nitto Kasei Kogyo Co., Ltd.)
E3: Fatty acid ester Recolb WE-40 (manufactured by Clariant Japan Co., Ltd.)

[Examples 1 to 12, Comparative Examples 1 to 7]
In the production of the evaluation samples, each raw material was weighed in the blending ratio of the polyamide resin composition shown in Table 1, mixed in a tumbler, and charged into a twin-screw extruder. The set temperature of the twin-screw extruder was 250° C. to 300° C., and the kneading time was 5 to 10 minutes. The obtained pellets were molded into various evaluation samples using an injection molding machine. The cylinder temperature of the injection molding machine was 250°C to 280°C, and the mold temperature was 80°C.

Various evaluation methods are as follows. Table 1 shows the evaluation results.
1. Relative viscosity of polyamide resin [RV] (98% sulfuric acid solution method)
Using an Ubbelohde viscometer, measurement was performed at 25° C. with a 98 mass % sulfuric acid solution and a polyamide resin concentration of 1 g/dl.
2. Melting Point of Polyamide Resin Measurement was performed using a differential scanning calorimeter EXSTAR 6000 (Seiko Instruments Inc.) at a heating rate of 20° C./min, and the peak top temperature of the endothermic peak was determined as the melting point.
3. Snap fit property (tensile strength, tensile elongation): Measured according to ISO527 to determine tensile strength (tensile strength) and tensile elongation (tensile breaking strain).
4. Flammability: Measured according to UL94, Vertical Burning Test. V-0 represents the highest flame retardancy.
5. Bleeding property: A molded product of 100 mm x 100 mm with a thickness of 2 mm was left at rest for 96 hours in a constant temperature and humidity bath set at 80 ° C. and 95% RH at least twice, and then returned to room temperature and precipitates were present on the surface. It was confirmed visually with a stereoscopic microscope.
6. Thermal discoloration: The color difference (ΔE) between the pellets after being left in the oven for 8 hours at a temperature of 120° C. and the pellets before treatment was calculated.
7. Moldability: Using a mold equipped with a mold release force measuring device, molding was performed under the above molding temperature conditions, and the mold release force was measured from the 31st shot to the 35th shot to obtain the mold release resistance value.

In Examples 1 to 12, the tensile strength is equivalent to that of general polyamide 6, 66 resin, the tensile elongation is 5% or more, there is no breakage even after the tensile yield point is exceeded, and there is no significant embrittlement. It is expected that a good snap-fit property will be obtained. In terms of flame retardancy at thicknesses of 0.4, 0.8, 1.6, and 3.0 mm, Examples 1 to 12 achieved UL94 V-0 evaluation, demonstrating high flame retardancy over a wide range of thicknesses. It can be seen that it has In terms of heat discoloration, Examples 1 to 12 had ΔE of 20 or less after 8 hours at 120° C., indicating that discoloration in a heat environment is suppressed. In terms of moldability, the molded article has a resistance value of 1 MPa or less when released from the mold, and the composition has an extremely low possibility of deformation and adhesion of the molded article during release even if continuously molded.

On the other hand, although Comparative Examples 1 to 7 partially satisfy the characteristics, Comparative Example 1 was evaluated as UL94 V-2 in terms of flame retardancy at thicknesses of 0.4, 0.8, 1.6, and 3.0 mm. It is not preferable because the flame retardancy is greatly lowered. Comparative Example 2 has a tensile elongation of 3%, and embrittlement cannot be suppressed, which is not preferable. In Comparative Example 3, the flame retardancy at thicknesses of 0.4, 0.8, 1.6, and 3.0 mm was rated V-2, and the tensile elongation was 3%, which was sufficient. It is difficult to say that both the flame retardancy and the snap-fit property are compatible, which is not preferable. Comparative Examples 4, 5, and 7 are evaluated as UL94 V-2 in terms of flame retardancy at thicknesses of 0.8, 1.6, and 3.0 mm, and it cannot be said that flame retardancy is high in a wide range of thicknesses. I don't like it because it's too hot. In addition, in Comparative Example 7, the mold release resistance, which is an index of moldability, exceeded 1 MPa, and it cannot be said that the moldability is good (good mold release), which is also undesirable in this respect. Finally, in Comparative Example 6, in addition to the UL94 V-2 evaluation for flame retardancy at thicknesses of 0.8, 1.6, and 3.0 mm, the tensile elongation is 3%, which is sufficient. It is difficult to say that both flame retardancy and snap-fitting are achieved, which is undesirable.

The flame-retardant polyamide resin composition of the present invention has a wide range of product thicknesses and is suitable for molded products that have a hinge portion. and excellent snap-fitting properties, it can be suitably used for electric/electronic parts, automobile parts, etc. where both high flame retardancy and snap-fitting properties are desired.

Claims

Polyamide resin (A) and melamine cyanurate (B) are contained, and 90 to 98 parts by mass of polyamide resin (A) and melamine cyanurate (B ) 2 to 10 parts by mass, phosphorus antioxidant (C) 0.01 to 1 part by mass, hindered phenol antioxidant (D) 0.01 to 1 part by mass, and fatty acid metal salt having 22 or less carbon atoms System lubricant (E) is contained in a proportion of 0.1 to 1 part by mass, and the polyamide resin (A) contains 55 to 85% by mass of polyamide 66 resin (A1) and 15 to 45% by mass of polyamide 6 resin (A2). flame-retardant polyamide resin composition containing;
The flame-retardant polyamide resin composition according to claim 1, wherein the fatty acid metal salt-based lubricant (E) is a metal salt of stearic acid.
A molded article made of the flame-retardant polyamide resin composition according to any one of claims 1 and 2.
　The molded article according to claim 3, wherein the molded article is any one of a ferrite core cover, an ESC lock, a binding band, and an electrical wiring protection member.