TWI623568B - Resin composition, thin-walled molled article, and method for manufacturing thin molded article - Google Patents

Abstract

The present invention provides a resin composition which is suitable for use as a thin molded article excellent in mechanical strength and heat resistance.

The resin composition includes (A) a thermoplastic resin containing a polycarbonate resin, (B) a fluidity improver, and optionally a (C) flame retardant, and further comprising (D) a long fiber for reinforcement. The long fiber bundle to which the resin adheres is attached, and the long fiber bundle to which the resin is adhered is bundled in a state in which the long fibers for reinforcement of the component (D) are aligned in the longitudinal direction, and the component (A) and (B) are contained. In the state in which the component (C) component is melted, it is adhered to the bundle of the reinforcing long fibers and integrated, and then cut into a length of 3 to 30 mm.

Description

Resin composition, thin molded article, and method for producing thin molded article

The present invention relates to a resin composition suitable for use as a material for producing a thin molded article for a casing or an internal chassis of an electronic device such as a mobile phone, a thin molded article using the same, and a method for producing the same.

An electronic device case such as a mobile phone is formed of a thin molded article, and is required to have a high bending modulus, excellent impact resistance, a small dimensional change due to water absorption, and flame retardancy as the case may be.

Japanese Laid-Open Patent Publication No. 2000-257442 discloses a lightweight resin composition for an automobile engine room made of a thermoplastic resin containing glass fibers, and a molded article produced by injection compression molding from the above composition.

Although the type of the thermoplastic resin is exemplified in a large number in paragraph No. 0031, there is no description about the blending of the flame retardant and the imparting of the flame retardancy in the case of improving the flame retardancy.

It is described in paragraph No. 0042 that the average glass fiber length of the molded article is in the range of 2 to 20 mm, particularly 3 to 15 mm, and in order to be within the above range, a total length of 3 to 100 mm, preferably 4 to 50 mm can be used. A glass fiber reinforced thermoplastic resin pellet in which glass fibers are arranged in parallel with each other.

Japanese Patent Publication No. 2000-289023 discloses an invention of a thermoplastic resin pellet containing inorganic fibers, which has a length of 3 to 100 mm, a thermoplastic resin having a bending modulus of a specific range, and pellets arranged in parallel with each other. 10 to 90% by weight of inorganic fibers having substantially the same length.

Although a large number of arbitrary components are listed in the paragraph No. 0041, although the flame retardant and the flame retardant auxiliary are contained therein, they are not used in the examples, and the flame retardancy is not particularly described.

It is described in paragraph number 0055, and it is expected to be used as an energy-saving and resource-saving material in various fields such as automobile interior materials, building materials, and civil engineering.

Japanese Laid-Open Patent Publication No. 2009-167270 discloses a composition obtained by dry-mixing (A) long fiber-reinforced thermoplastic resin pellets, (B) flame retardant pellets, and (C) lubricant.

The thermoplastic resin and the long fiber which can be used for the component (A) are exemplified in the paragraph numbers 0025 and 0041, but the combination of the specific resin and the long fiber is not described.

Paragraph No. 0095 describes applications such as an outer casing and a casing of an electronic device.

Japanese Laid-Open Patent Publication No. Hei 7-11100 discloses a flame-retardant glass fiber reinforced resin composition comprising a glass fiber staple fiber using an epoxy sizing agent and an organic halogen-containing flame retardant as a flame retardant. .

Japanese Laid-Open Patent Publication No. 2008-202012 discloses a long fiber-reinforced thermoplastic resin composition composed of a polycarbonate resin, a styrene resin, and a reinforcing fiber, but is formulated with flame retardant in the case of improving flame retardancy. The agent and the flame retardancy are not described. In addition, in view of the problem of improving heat resistance, an organic phosphate ester to which a plasticizing effect (fluidity improving effect) is added is not described or suggested.

An object of the present invention is to provide a resin composition which can obtain a thin molded article excellent in mechanical strength and heat resistance.

Further, another object of the present invention is to provide a thin molded article excellent in mechanical strength and heat resistance and a method for producing the same.

The means for solving the problem of the present invention is to provide a resin composition comprising (A) a thermoplastic resin containing a polycarbonate resin, (B) a fluidity improver, and optionally (C) a flame retardant. And (D) a long fiber bundle to which a resin containing a reinforcing long fiber is attached, and the long fiber bundle to which the resin is attached is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction. When the components including the component (A) and the component (B) and the component (C) which is further optional are melted, they are adhered to the bundle of the reinforcing long fibers and integrated, and then cut into lengths 3 ~30mm.

The present invention solves the problem of the other problems by providing a thin molded article comprising the above resin composition and having a thickness of 0.3 to 1.5 mm and a residual fiber length of 0.3 to 1.5 mm.

The present invention provides a method for producing a thin molded article, which is a method for producing a thin molded article using the resin composition, which is obtained by injection molding or injection compression molding. Forming.

The molded article obtained from the resin composition of the present invention has high mechanical strength and heat resistance even in a thin form, and in the case where the composition contains a flame retardant, the mechanical strength and heat resistance can be maintained at a high level while imparting resistance. Flammability. Therefore, it is suitable for use in various thin molded articles which require mechanical strength, heat resistance, and heat resistance as needed.

<Resin composition>

The composition of the present invention comprises a long fiber bundle to which a resin is attached, wherein the resin-attached long fiber bundle contains the component (A), the component (B), and optionally the component (C), and further contains the component (D). Although it may be composed only of the fiber bundle to which the resin is attached, it may further contain other components as needed.

The resin-attached long fiber bundle included in the composition of the present invention is adhered to the reinforcing state in a state in which the component (A) and the component (B) and the component (C) as necessary are melted. After the long fiber bundles are integrated, they are cut into lengths of 3 to 30 mm, and the reinforcing long fiber bundles are bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction.

The long fiber bundle to which the resin is contained in the composition of the present invention is a component of the reinforcing long fiber bundle to which the components (A) and (B) and optionally (C) are adhered, and is attached according to the attached state. The resin is impregnated into the center portion (impregnation) of the long fiber bundle for reinforcement, and the resin is introduced between the fibers constituting the center portion of the fiber bundle (hereinafter referred to as "fiber bundle impregnated with resin"), and only for reinforcement. The surface of the long fiber bundle is covered with a resin (hereinafter referred to as "fiber bundle coated with resin"), and the middle of these (the surface of the fiber bundle is covered with resin, and the resin is only impregnated near the surface, but at the center) Some of the resin is not introduced (hereinafter referred to as "a part of the fiber bundle impregnated with the resin").

The resin-attached fiber bundle included in the composition of the present invention is preferably a fiber bundle impregnated with a resin from the viewpoint of dispersibility and fluidity.

[(A) ingredient]

The thermoplastic resin of the component (A) is a polycarbonate resin. The thermoplastic resin of the component (A) is preferably a (A-2) styrene resin and/or a polyester resin, in addition to the (A-1) polycarbonate resin.

The polycarbonate resin of the component (A-1) is exemplified by 2,2-bis(4-oxophenyl)alkane; bis(4-oxophenyl)ether; bis(4-oxophenyl). a polymer or copolymer composed of bisphenols such as ruthenium, sulfide or ruthenium [(A-1-1) component], and a copolymer of polycarbonate and organoaluminoxane [(A- 1-2) Ingredients].

As the polycarbonate of the component (A-1), in addition to the component (A-1-1) or the component (A-1-2), the component (A-1-1) can be used together with (A- 1-2) The ingredients are used in combination.

The polycarbonate resin of the component (A-1-1) can be used. For example, the paragraph number 0010, 0011 described in Japanese Patent No. 3376753, and the paragraph number described in Japanese Patent No. 3319638 can be used. Those who are 0011 to 0026 are described in paragraphs 0006 to 0010 of Japanese Patent No. 3989630.

The polycarbonate of the (A-1-2) component and the organosiloxane copolymer can be used. The block derived from the aromatic polycarbonate is described in paragraphs 0010 to 0014 of JP-A-10-7897. a copolymer of a block derived from a diorganosiloxane, (8) polyoxyxane-polycarbonate copolymer-1, polydimethylene described in paragraph number 0032 of the aforementioned publication. The amount of the base oxane is 15% by weight of the copolymer of the polycarbonate-organic polyoxane copolymer (ruthenium content is 5.25% by weight), and the viscosity average molecular weight is 22,000; (9) polydecane-polycarbonate The ester copolymer-2, polydimethylsiloxane was in an amount of 5% by weight based on the total of the polycarbonate-organopolyoxyalkylene copolymer (yttrium content of 1.75 wt%), and had a viscosity average molecular weight of 22,000.

Further, as the polycarbonate of the (A-1-2) component and the organosiloxane copolymer, the following paragraphs 0027 to 0028 described in JP-A-2010-280923 can be used.

The polycarbonate and the organooxyalkylene copolymer are composed of a polycarbonate moiety and a polyorganooxane moiety, and can be, for example, a polycarbonate oligomer and a polyorganosiloxane component at the end. The reactive group polyorganosiloxane (polydimethyl siloxane, polydimethoxy siloxane, polymethyl phenyl oxane, etc.) is dissolved in a solvent such as dichloromethane, and hydrogen of bisphenol A is added. The sodium oxide aqueous solution is produced by performing an interfacial polycondensation reaction using a catalyst such as triethylamine. The copolymer of the above-mentioned polycarbonate and the organic decane is disclosed in, for example, Japanese Laid-Open Patent Publication No. Hei 3-292359, Japanese Patent Application Laid-Open No. Hei No. Hei-4-202465, Japanese Patent Application Laid-Open No. Hei No. 8-81620, No. 8-302178 Bulletin, Japanese Patent Publication No. 10-7897.

The polymerization degree of the polycarbonate and the organic siloxane copolymer is from 3 to 100, and it is preferred to use a polymethyl oxane portion having a polymerization degree of from about 2 to about 500.

Further, the content of the polydimethylsiloxane in the polycarbonate and the organosiloxane copolymer (the bisphenol A polycarbonate containing the by-product) is usually 0.2 to 30% by mass, preferably 0.3. ~20% by mass range.

Further, as the polycarbonate and the organosiloxane copolymer of the component (A-1-2), those disclosed in JP-A-2011-46911 can be used.

The component (A-2) may be a styrene-based resin alone or a polyester-based resin, or a styrene-based resin or a polyester-based resin may be used in combination.

Examples of the styrene resin of the component (A-2) include ABS resin, AS resin, ASA resin, AES resin, ACS resin, ASS resin, PS resin, HIPS resin, MS resin, MBS resin, MABS resin, and SB resin. , SBS resin, SEBS resin, SIS resin, SIPS resin, SEPS resin, and the like. The styrene resin preferably contains an ABS resin and/or an AS resin.

The polyester resin of the component (A-2) can be used. For example, an aromatic polyester described in paragraph No. 0012 to 0017 of Japanese Patent No. 3376753 can be used; the paragraph number described in Japanese Patent No. 3319638 Polyalkylene terephthalate of 0027~0032; thermoplastic polyester resin of Paragraph No. 0102, 0013 described in Japanese Patent No. 3896630. Preferably, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate or polybutylene terephthalate can be used.

When the component (A) is composed of the component (A-1) and the component (A-2), the ratio of the component (A-1) to the component (A-2) in the component (A) is: (A-1) The ratio of the component is 50 to 98% by mass, preferably 55 to 96% by mass, and the ratio of the component (A-2) is 50 to 2% by mass, preferably 45 to 4% by mass.

[(B) ingredients]

The fluidity improver of the component (B) acts to increase the fluidity of the resin composition in a molten state, and is also a component which acts to allow the fiber bundle to easily come into contact with the resin composition when the fiber bundle to which the resin is attached is produced.

The fluidity improver of the component (B) is preferably an aromatic polyester oligomer, a cyclic (alkylene terephthalate) oligomer, an aromatic polycarbonate oligomer, or a polycaprolactone. One or two or more selected from the group consisting of a low molecular weight acrylic copolymer and an aliphatic rubber-polyester block copolymer.

The aromatic polyester oligo can be used in the form of an aromatic dicarboxylic acid or an ester-forming derivative thereof according to a known method, as described in paragraphs 0051 to 0052 of JP-A-2003-26911. The diol or its ester-forming derivative is produced by heating under pressure or slight decompression.

The degree of polymerization of the aromatic polyester oligomer determines the desired value by adjusting the pressure, the heating temperature, and the like.

The aromatic dicarboxylic acid is preferably terephthalic acid, and examples thereof include isophthalic acid and phthalic acid.

The aromatic dicarboxylic acid or an ester-forming derivative thereof is preferably a dialkyl ester of an aromatic dicarboxylic acid or hydrazine chloride.

Examples of the diol or an ester-forming derivative thereof include ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, ethylene oxide, and propylene oxide. In this case, a part of the diol component may be substituted with glycerin, neopentyl alcohol, p-diphenylmethanol, 1,4-cyclohexanediol, bisphenol A or the like.

As the cyclic (alkylene terephthalate) oligomer, the paragraph number 0012 to 0015 described in JP-A-2010-6920 can be used.

It is preferably a mixture of oligomers having a degree of polymerization of from 2 to 30, and a main component having a degree of polymerization up to 12 degrees. Commercially available products include CBT (cyclic poly(butylene terephthalate) oligomer) manufactured by Cyclics Corporation; melting point: 140 to 190 ° C).

As the aromatic polycarbonate oligomer, those described in paragraph No. 0053 of JP-A-2003-26911 can be used.

As the polycaprolactone oligomer, the paragraph number 0054 of JP-A-2003-26911 can be used.

As the low molecular weight acrylic copolymer, those described in paragraph No. 0055 of JP-A-2003-26911 can be used.

Specifically, the copolymer of at least 7% or more, preferably 20 to 40% by weight of methacrylic acid or an ester of acrylic acid and an alcohol having 1 to 6 carbon atoms, has a weight average molecular weight of 40,000 or less, preferably 25,000. the following. Examples of such an acrylate include methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 1,3-butene-diacrylate, and the like. The methacrylates are: methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, 1,3-butene dimethacrylate, etc., of which methyl is preferred. Butyl acrylate. The components copolymerized with these esters include olefin monomers such as styrene, acrylonitrile, ethylene, propylene, butadiene, and 1-butene. Preferred monomers are styrene and acrylonitrile.

As the aliphatic rubber-polyester block copolymer, the paragraph number 0056 described in JP-A-2003-26911 can be used.

Specifically, it is a block copolymer obtained by ring-opening polymerization of an aliphatic lactone and an aliphatic diene rubber to form a polyester block, which has one end or both ends of the aliphatic diene rubber. Rubber-polyester block copolymer of polyester block. The aliphatic diene rubber has a number average molecular weight of 1,000 to 4,000, and has a functional group such as a carboxyl group, a hydroxyl group, a vinyl group or an amine group at both ends of the molecule, and the functional group is preferably a hydroxyl group. Aliphatic diene rubbers include: α,ω-1,2-polybutadiene diol, hydrogenated α,ω-1,2-polybutadiene diol, hydroxyl terminal modified-1,4-polybutylene The diene, the liquid polychloroprene, the liquid natural rubber or the like is preferably a polybutadiene-based compound or a partially or fully hydrogenated polybutadiene-based compound.

The rubber-polyester block copolymer is preferably an aliphatic lactone in the presence of a catalyst, and a terminal hydroxyl group of an aliphatic diene rubber having a hydroxyl group at the end is gradually ring-opened and polymerized to form a polyester block. The ester is preferably ε-caprolactone. The terminal group of the polyester chain in the block copolymer is usually a hydroxyl group, and is desirably blocked by an ester bond, an ether bond, a urethane bond, and a non-reactive group.

It is particularly preferred to carry out the blocking by acetylation with acetic anhydride and oxime etherification with a decylating agent.

The content of the component (B) in the composition is preferably from 0.5 to 20% by mass, more preferably from 1 to 15% by mass, even more preferably 2, in the total amount of the component (A) and the component (B). ~10% by mass. In the above range, the fluidity at the time of melt-kneading the component (A) and the component (D) and the component (C) which is further desired can be improved, so that the fiber bundle to which the resin adheres can be easily produced.

[(C) ingredient]

The flame retardant of the component (C) is a component which is used in the case of imparting flame retardancy as needed.

The flame retardant of the component (C) is preferably an antimony-based flame retardant. A known oxygen-based flame retardant can be used, and for example, an oxygen-based flame retardant described in paragraphs 0051 to 0079 of JP-A-2005-320457, and an example of the above-mentioned publication (paragraph No. 0097) can be used. "X-40-9805" manufactured by Shin-Etsu Chemical Co., Ltd., "TREFIL F202" manufactured by Dow Corning Toray Silicone Co., Ltd.; and methyl group as described in paragraph 0012 of JP-A-2005-200588 "X-40-9805" manufactured by Shin-Etsu Chemical Co., Ltd., which is used as a substituent with a phenyl group as a substituent, is described in paragraphs 0055 and 0056 of JP-A-2004-27113. Further, KR-480 manufactured by Shin-Etsu Chemical Co., Ltd., which is a siloxane polymer having a methyl group and a phenyl group, can also be used.

The content of the component (C) in the composition is preferably from 1 to 20 parts by mass, more preferably from 2 to 15 parts by mass, still more preferably from 3 to 10 parts by mass, per 100 parts by mass of the component (A). .

[(D) ingredient]

As the reinforcing long fiber for the component (D), a known glass fiber, carbon fiber, metal fiber, inorganic fiber (removing glass fiber) or the like can be used, and glass fiber is preferable.

The content of the component (D) in the composition is preferably 12 to 240 parts by mass, more preferably 16 to 100 parts by mass, still more preferably 24 to 67 parts by mass, per 100 parts by mass of the component (A).

When the content of the component (D) is within the above range, the mechanical strength of the molded article can be improved, and the formation of the thin molded article can be facilitated.

[Manufacturing method of fiber bundle to which resin is attached]

The fiber bundle to which the resin is adhered can be bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, and the components (A) and (B) are melted, and if necessary, (C) When the components are dispersed, they are attached to the bundle of the reinforcing long fibers and integrated, and then cut into a length of 3 to 30 mm.

In the present invention, by using the fluidity improver of the component (B) as a component of the fiber bundle to which the resin is attached, it is possible to improve the melt-kneading of the components (A) and (B) and the optional component (C). The fluidity is such that the (A) and (B) components and the optional (C) component are easily attached to the reinforcing long fiber bundle composed of the component (D), so that the resin is adhered thereto. The manufacture of fiber bundles becomes easy.

The fiber bundle to which the resin is attached can be produced by a method known in the art using a mold, for example, in addition to paragraph 23 of JP-A-6-313050 and paragraph 23 of JP-A-2007-176227, it can also be applied to Japan. JP-A-6-2344 (Manufacturing method and forming method of long fiber bundle coated with resin), JP-A-6-114832 (Fiber-reinforced thermoplastic resin structure and its production method), and JP-A-6-293023 (long fiber reinforced) Japanese Laid-Open Patent Publication No. Hei 7-205317 (Method for Extracting Fiber Bundles and Method for Producing Long Fiber Reinforced Resin Structure), Japanese Patent Laid-Open No. Hei 7-216104 (Manufacturing Method of Long Fiber Reinforced Resin Structure) , Japanese Patent Laid-Open No. 7-251437 (manufacturing method and manufacturing device of long fiber reinforced thermoplastic composite material), Japan Kaiping 8-118490 (manufacturing method of a crosshead die and a long fiber reinforced resin structure).

The length of the fiber bundle to which the resin is attached (that is, the length of the reinforcing long fiber of the component (D) contained in the fiber bundle to which the resin is attached) is in the range of 3 to 30 mm, preferably 5 mm to 20 mm, more preferably 6 mm. 15mm. When it is 3 mm or more, the mechanical strength of the molded body obtained from the composition can be improved, and when it is 30 mm or less, the moldability is improved.

The diameter of the fiber bundle to which the resin is attached is not particularly limited and may be in the range of 0.5 mm to 5 mm.

The residual fiber length derived from the component (D) contained in the thin molded article of the present invention is preferably from 0.3 to 1.5 mm, more preferably from 0.5 to 1.3 mm. If it is in the above range, sufficient impact strength can be obtained.

<Other ingredients>

The composition of the present invention may contain a flame retardant auxiliary, a heat stabilizer, a lubricant, a light stabilizer, an antioxidant, a colorant, a mold release agent, an antistatic agent, etc. within a range in which the object of the present invention can be solved. .

<Thin molded article and method for producing the same>

The thin molded article of the present invention can be produced by using a resin fiber bundle to which the resin is adhered, by a known resin molding method such as injection molding, and the length of the reinforcing fiber of the component (D) contained in the molded article. Since it is maintained longer, it can be manufactured by injection compression molding.

The injection compression molding method is a known resin molding method in which the cavity is temporarily enlarged slightly when the resin is filled, and after the filling is performed reasonably, the molded product is formed by a mold clamping mechanism or a hydraulic cylinder incorporated in the mold. A method of partially or fully pressurizing and compressing a specific shape. Injection into The shape method is roughly distinguished by the mold construction surface, and can be divided into two types: the Rolinks method and the micro-mode method, and any one of the methods is applicable.

In order to be thin and exhibit high mechanical strength, the thin molded article of the present invention preferably has a thickness of 0.3 to 1.5 mm and a residual fiber length of 0.3 to 1.5 mm.

The thin molded article of the present invention is suitable for use as a housing for an electronic device or an internal chassis.

Electronic machines include: mobile phones, personal digital assistants (PDAs), smart phones, smartbooks, car navigation, game consoles, cassettes, CD players, DVD players, electronic notebooks, Electronic dictionary, computer, hard disk recorder, personal computer, laptop, tablet, camera, digital camera selected.

[Examples] Production Example 1 (Manufacture of glass long fiber bundle impregnated with resin)

The resin mixture composed of the fluidity improver of the component (A), the component (A-2) and the component (B), and the flame retardant of the component (C) and various other additives is shown in Table 1. The ratio was mixed by a tumbler, and then melt-kneaded in a twin-screw extruder (270 ° C) to obtain a pellet-shaped resin composition.

A fiber bundle (glass fiber 1: bundle of about 4,000 fibers) composed of glass long fibers composed of long glass fibers of (D) was passed through a crosshead die. At this time, the melt kneaded material of the above resin composition pellets shown in Table 1 was supplied to a right angle die by another twin-screw extruder (roller temperature: 290 ° C), and the glass long fiber of the component (D) was obtained. The bundle is impregnated therein to obtain a resin composition having a specific fiber content. Then, straight The shaped nozzle at the exit of the corner die is shaped, trimmed by a shaping roll, and cut into a specific length by a granulator to obtain a pellet-like (cylindrical) fiber bundle impregnated with resin. When the obtained fiber bundle impregnated with the resin was cut in this manner, the glass long fibers were substantially parallel in the longitudinal direction, and the resin was impregnated to the center portion.

Examples and comparative examples

In Examples 1 to 9, the fiber bundle impregnated with the resin obtained in Production Example 1 was used.

In Comparative Examples 1 to 3, the fiber bundle impregnated with the resin was produced in accordance with Production Example 1 using the components shown in Table 2, but the polycarbonate resin could not be impregnated into the fiber bundle.

<Measurement method> (1) Weight average fiber length Test piece making method

An ISO multipurpose test piece A-shaped object (thickness: 4 mm) was produced under the following conditions.

Device: Nippon Steel Works Co., Ltd., J-150EII

Roller temperature: 280 ° C

Mold temperature: 100 ° C

Screw: special screw for long fiber

Screw diameter: 51mm

Gate shape: 20mm wide side gate

3 g of the sample was cut out from the above test piece, ashed by heating at 650 °, and the fiber was taken out. Take a part of the fiber (500 pieces) taken out The average fiber length. The equations of [0044] and [0045] of JP-A-2006-274061 are used.

(2) Tensile strength (MPa)

Determined according to ISO527.

(3) Bending strength (MPa)

Determined according to ISO178.

(4) Flexural modulus (MPa)

Determined according to ISO178.

(5) Sand impact strength (kJ/m ² )

Determination of impact strength of sand dents with dents according to ISO 179/1eA

(6) Heat resistance (deformation temperature under load)

According to ISO75, it was evaluated under a load of 1.80 MPa.

(7) Flame retardancy

Test pieces having a thickness of 1.2 mm made of the compositions of the examples and the comparative examples were tested in a vertical burning test of UL94 (V-0 to V-2).

<Use ingredients> (A-1) ingredients

PC-1: Mitsubishi Engineering Plastics Co., Ltd., IUPILON S2000F, viscosity average molecular weight of about 22000

PC-2: Mitsubishi Engineering Plastics Co., Ltd., IUPILON S3000F, viscosity average molecular weight of about 18,000

(A-2) ingredients

ABS-1: emulsion polymerization ABS resin (40% by mass of rubber and 26% by mass of acrylonitrile)

AS: CEVIAN N 050 made by Daicel Plastics Co., Ltd.

PET: BELLPET EFG6C manufactured by Bell Polyester Products, Inc.

(B) component

Polycaprolactone: PLACEL H1P manufactured by Daicel Co., Ltd.

Cyclic polyester oligomer: CBT100 manufactured by CYCLICS CORPRATION

(C) component

Glass fiber 1: Glass fiber roving, fiber diameter 17 μm, bundled with epoxy decane coupling agent.

(D) component

Methylphenyl fluorene resin: KR-480 manufactured by Shin-Etsu Chemical Co., Ltd.

(other)

PTFE: Asahi Glass Co., Ltd., Fluon PTFE CD141

Stabilizer 1: manufactured by BASF Japan, IRGANOX 1010

Stabilizer 2: ADEKA (share), ADK STAB PEP36

Stabilizer 3: ADEKA (stock), ADK STAB AX71

Olefin Wax: manufactured by Honeywell International, Inc., AC Polyethylene 9A

Talc: Lin Huacheng (share) system, MICRON WHITE 5000S

In Tables 1 and 2, (A-1) component, (A-2) component, and (B) component are represented by mass%, and other components are based on (A-1) component and (A-2) component. And the total mass of the component (B) is represented by 100 parts by mass. Therefore, in the case of Example 8, the content ratio of the component (C) in the fiber bundle impregnated with the resin was 3.9% by mass, and the component (D) was 40% by mass.

Claims (18)

A resin composition comprising (A) a thermoplastic resin containing a polycarbonate resin and (B) a fluidity improver, and further comprising (D) a long fiber bundle to which a resin containing long fibers for reinforcement is adhered, and the adhesion The long fiber bundle of the resin is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, and the (A) component and the (B) component are melted and integrated in the bundle of the reinforcing long fibers. After the cutting, the length is 3 to 30 mm, and the fluidity improver of the component (B) is an aromatic polyester oligomer, a cyclic (alkylene terephthalate) oligomer, and an aromatic poly One or two or more selected from the group consisting of a carbonate oligomer, a polycaprolactone, and an aliphatic rubber-polyester block copolymer, and the component (B) in the composition is in the component (A) and The total amount of the component B is 0.5 to 20% by mass, and the content of the component (D) is 12 to 240 parts by mass based on 100 parts by mass of the component (A). The resin composition of claim 1, wherein the long fiber bundle to which the resin is attached further has a (C) flame retardant of an antimony-based flame retardant, and is in a state in which the component (C) is dispersed. The content of the component (C) in the composition is 1 to 20 parts by mass based on 100 parts by mass of the component (A). The resin composition of the first aspect of the invention, wherein the thermoplastic resin of the component (A) comprises (A-2) a styrene resin and/or a polyester resin in addition to the (A-1) polycarbonate resin. . The resin composition of the second aspect of the invention, wherein the thermoplastic resin of the component (A) comprises (A-2) a styrene resin and/or a polyester resin in addition to the (A-1) polycarbonate resin. . The resin composition of the first aspect of the invention, wherein the long fiber bundle to which the resin is attached is bundled with a long fiber bundle which is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, The component containing the component (A) and the component (B) is coated on the surface of the reinforcing long fiber bundle while being melted, and is impregnated into the long fiber bundle for reinforcement and integrated, and then cut into lengths. 3~30mm. The resin composition of the third aspect of the invention, wherein the long fiber bundle to which the resin is adhered is a bundle of reinforcing long fibers bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction. The component containing the component (A) and the component (B) is coated on the surface of the reinforcing long fiber bundle while being melted, and is impregnated into the long fiber bundle for reinforcement and integrated, and then cut into lengths. 3~30mm. The resin composition of the second aspect of the invention, wherein the long fiber bundle to which the resin is adhered is a bundle of reinforcing long fibers bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction. The component containing the component (A), the component (B), and the component (C) is coated on the surface of the long fiber bundle for reinforcement after being melted, and is integrated in the long fiber bundle for reinforcement. Cut to a length of 3 to 30 mm. The resin composition of claim 4, wherein the long fiber bundle to which the resin is attached is bundled with a long fiber bundle which is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, The component containing the component (A), the component (B), and the component (C) is coated on the surface of the long fiber bundle for reinforcement after being melted, and is integrated in the long fiber bundle for reinforcement. Cut to a length of 3 to 30 mm. Such as the resin composition of claim 1 of the patent scope, in which a tree is attached The long fiber bundle of the fat is bundled with a long fiber bundle which is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, and the components containing the components (A) and (B) are In the molten state, it is coated on the surface of the long fiber bundle for reinforcement, and is not impregnated into the long fiber bundle for reinforcement and integrated, and then cut into a length of 3 to 30 mm. The resin composition of the third aspect of the invention, wherein the long fiber bundle to which the resin is adhered is a bundle of reinforcing long fibers bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction. The component containing the component (A) and the component (B) is coated on the surface of the reinforcing long fiber bundle in a state of being melted, and is not impregnated into the long fiber bundle for reinforcement and integrated, and then cut into lengths. 3~30mm. The resin composition of the second aspect of the invention, wherein the long fiber bundle to which the resin is adhered is a bundle of reinforcing long fibers bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction. The component containing the component (A), the component (B), and the component (C) is coated on the surface of the long fiber bundle for reinforcement after being melted, and is integrated in the long fiber bundle for reinforcement. Cut to a length of 3 to 30 mm. The resin composition of claim 4, wherein the long fiber bundle to which the resin is attached is bundled with a long fiber bundle which is bundled in a state in which the reinforcing long fibers of the component (D) are aligned in the longitudinal direction, The component containing the component (A), the component (B), and the component (C) is coated on the surface of the long fiber bundle for reinforcement after being melted, and is integrated in the long fiber bundle for reinforcement. Cut to a length of 3 to 30 mm. The resin composition according to any one of claims 1 to 12, wherein the long-fiber-based glass fiber for reinforcing the component (D). The resin composition according to any one of claims 1 to 12, wherein the long fiber bundle coated with the resin has a diameter of 0.5 to 5 mm and a length of 3 to 30 mm. A thin molded article comprising the resin composition according to any one of claims 1 to 14, which has a thickness of 0.3 to 1.5 mm and a residual fiber length of 0.3 to 1.5 mm. A thin molded article according to claim 15 wherein the thin molded article is used for a housing or an internal chassis of an electronic machine. For example, in the thin molded article of claim 16, wherein the electronic device is a mobile phone, a personal digital assistant (PDA), a smart phone, a car navigation, a game machine, a cassette tape, a CD player, a DVD player, and an electronic device. Notepad, electronic dictionary, computer, hard disk recorder, personal computer, camera, digital camera selected. A method for producing a thin molded article, which is a method for producing a thin molded article according to claim 15 or 17, which is formed by injection molding a resin composition according to any one of claims 1 to 14. Forming by injection or injection compression molding.