JPH0570700A - Liquid crystalline resin composition, method for producing the same and molded article - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a liquid crystalline resin composition having excellent mechanical properties and heat resistance. [Structure] (A) Liquid crystalline resin 1 that forms an anisotropic molten phase
A resin composition comprising 50% by weight and (B) 99 to 50% by weight of one or more thermoplastic resins capable of being melt-molded at a temperature lower than the liquid crystal starting temperature of the liquid crystalline resin (A). A thermoplastic resin composition, wherein the liquid crystalline resin (A) is dispersed particles having an average aspect ratio of 5 or more and dispersed in the matrix phase of the thermoplastic resin (B).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition comprising a liquid crystalline resin and a thermoplastic resin which are useful as electric / electronic device parts, automobile parts, mechanical parts, etc. and which have excellent mechanical properties, heat resistance and moldability. is there.

[0002]

2. Description of the Related Art In recent years, demands for higher performance of plastics have been increasing, and many polymers having various new properties have been developed. Among them, optically anisotropic liquid crystal characterized by parallel arrangement of molecular chains. Resin has attracted attention because it has excellent fluidity and mechanical properties. However,
At present, the applications are limited because the molding shrinkage rate and mechanical properties are different in the direction perpendicular to the molecular chain orientation direction and the cost is high. On the other hand, it is known that many thermoplastic resins are not necessarily sufficient in mechanical properties and heat resistance as compared with liquid crystal resins.

Therefore, in order to solve the drawbacks of both, attention has been paid to a blend of a liquid crystalline resin and a thermoplastic resin (for example, JP-A-57-25354). Further, in order to improve the mechanical properties of the blended product, a thermoplastic resin having a melting point lower than the liquid crystal starting temperature of the liquid crystalline resin by 10 ° C. or more is blended at a liquid crystal starting temperature or higher, and molded at a liquid crystal starting temperature or lower. There is proposed a method for improving the skin-core structure by maintaining the alignment state of the liquid crystalline resin (JP-A-3-24911). However, in this method, the orientation of the liquid crystalline resin is not sufficient,
No significant improvement in physical properties.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and obtain a liquid crystalline resin composition having excellent mechanical properties and heat resistance.

[0005]

Means for Solving the Problems That is, the present invention comprises (A) 1 to 50% by weight of a liquid crystalline resin forming an anisotropic molten phase, and (B) a temperature lower than the liquid crystal starting temperature of the liquid crystalline resin (A). In a resin composition containing 99 to 50% by weight of one or more thermoplastic resins capable of being melt-molded with, the liquid crystalline resin (A) becomes dispersed particles having an average aspect ratio of 5 or more, Disclosed is a liquid crystalline resin composition characterized by being dispersed in the thermoplastic matrix phase.

The compounds specifically used in the present invention will be described in detail below.

The liquid crystalline resin (A) used in the present invention is a resin capable of forming an anisotropic molten phase. For example, p-hydroxybenzoic acid / polyethylene terephthalate liquid crystal polyester, p-hydroxybenzoic acid / 6
-Hydroxy-2-naphthoic acid type liquid crystal polyester, p
-Hydroxybenzoic acid / 4,4'-dihydroxybiphenyl / terephthalic acid / isophthalic acid type liquid crystal polyester and the like can be mentioned. Among them, the following structural units (I) and (I
I), (IV) or (I), (II), (III),
A liquid crystal polyester composed of (IV) is preferred.

[0008]

[Chemical 4]

(Where R1 is

[0010]

[Chemical 5]

R1 represents one or more groups selected from

[0012]

[Chemical 6]

Shows one or more groups selected from Also,
In the formula, X represents a hydrogen atom or a chlorine atom, and the structural unit [(II) + (III)] and the structural unit (IV) are substantially equimolar. ) The structural unit (I) is a structural unit of polyester produced from p-hydroxybenzoic acid, and the structural unit (II) is 4,4'-dihydroxybiphenyl, 3,3 ', 5,5'-tetramethyl-. 4,4'-
Selected from dihydroxybiphenyl, hydroquinone, t-butylhydroquinone, phenylhydroquinone, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 2,2-bis (4-hydroxyphenyl) propane and 4,4'-dihydroxydiphenyl ether. A structural unit produced from an aromatic dihydroxy compound, a structural unit (III) a structural unit produced from ethylene glycol, a structural unit (IV) a terephthalic acid,
Isophthalic acid, 4,4'-diphenylcarboxylic acid, 2,
6-naphthalenedicarboxylic acid, 1,2-bis (phenoxy) ethane-4,4'-dicarboxylic acid, 1,2-bis (2-chlorophenoxy) ethane-4,4'-dicarboxylic acid and diphenyl ether dicarboxylic acid Each of the structural units formed from the aromatic dicarboxylic acid is shown. In particular, when the structural unit (III) is included, R1 is

[0014]

[Chemical 7]

Is at least 70 mol% of the structural unit (II), and R2 is

[0016]

[Chemical 8]

It is particularly preferable that the above-mentioned group is 70% by mole or more of the structural unit (IV). The copolymerization amount of the above structural units (I), (II), (III) and (IV) is arbitrary. However, the following copolymerization amount is preferable from the viewpoint of fluidity. That is, the structural unit (II
In the case of containing I), the structural unit [(I) + (II)] is [(I) + (II) +] from the viewpoint of heat resistance and mechanical properties.
(III)] is preferably 60 to 95 mol%,
92 mol% is more preferable. Further, the structural unit (III)
Is 40 to 5 mol% of [(I) + (II) + (III)]
Is preferable, and 18 to 8 mol% is more preferable. Further, the molar ratio of the structural unit (I) / (II) is preferably 75/25 to 95/5, and more preferably 78/22 to 93/7 from the viewpoint of the balance between fluidity and mechanical properties. Further, the structural unit (IV) is a structural unit [(II) + (II
I)] is substantially equimolar.

On the other hand, when the structural unit (III) is not contained, the structural unit (I) is [(I) in view of fluidity.
+ (II)] is preferably 40 to 90 mol%, particularly preferably 60 to 88 mol%, and the structural unit (IV) is substantially equimolar to the structural unit (II).

In the condensation polymerization of the above preferred liquid crystalline polyester, 3,3'-diphenyldicarboxylic acid, in addition to the components constituting the structural units (I) to (IV),
Aromatic dicarboxylic acids such as 2,2′-diphenyldicarboxylic acid, aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and dodecanedioic acid, alicyclic dicarboxylic acids such as hexahydroterephthalic acid, chlorohydroquinone, methyl Aromatic diols such as hydroquinone, 4,4′-dihydroxydiphenyl sulfone, 4,4′-dihydroxydiphenyl sulfide, 4,4′-dihydroxybenzophenone, 1,4-butanediol,
1,6-hexanediol, neopentyl glycol,
Aliphatic and alicyclic diols such as 1,4-cyclohexanediol and 1,4-cyclohexanedimethanol, and m
Aromatic hydroxycarboxylic acids such as -hydroxybenzoic acid and 2,6-hydroxynaphthoic acid, and p-aminophenol and p-aminobenzoic acid may be copolymerized in amounts that do not impair the object of the present invention.

The method for producing the liquid crystalline resin (A) in the present invention is not particularly limited, and it can be produced according to the known condensation polymerization method of polyester. For example, among the liquid crystal polyesters that can be preferably used, the production methods (1) to (4) are preferable when the structural unit (III) is not contained, and the production method (5) is preferable when the structural unit (III) is contained.

(1) p-acetoxybenzoic acid and 4,
A method of producing a diacylated aromatic dihydroxy compound such as 4′-diacetoxybiphenyl or paraacetoxybenzene and an aromatic dicarboxylic acid such as terephthalic acid by a deacetic acid condensation polymerization reaction.

(2) p-hydroxybenzoic acid and 4,
A method in which an aromatic dihydroxy compound such as 4'-dihydroxybiphenyl or hydroquinone or an aromatic dicarboxylic acid such as terephthalic acid is reacted with acetic anhydride to acylate a phenolic hydroxyl group, and then a deacetic acid polycondensation reaction is performed.

(3) Produced by dephenol polycondensation reaction from phenyl ester of p-hydroxybenzoic acid and aromatic dihydroxy compound such as 4,4'-dihydroxybiphenyl and hydroquinone and diphenyl ester of aromatic dicarboxylic acid such as terephthalic acid. how to.

(4) Aromatic dicarboxylic acids such as p-hydroxybenzoic acid and terephthalic acid are reacted with a predetermined amount of diphenyl carbonate to form diphenyl esters, and then aromatic compounds such as 4,4'-dihydroxybiphenyl and hydroquinone. Add a group dihydroxy compound,
A method for producing by dephenol polycondensation reaction.

(5) The method of (1) or (2) in the presence of a polyester polymer such as polyethylene terephthalate, an oligomer or a bis (β-hydroxyethyl) ester of an aromatic dicarboxylic acid such as bis (β-hydroxyethyl) terephthalate. Manufacturing method.

Typical examples of the catalyst used in the polycondensation reaction include stannous acetate, tetrabutyl titanate, potassium acetate, antimony trioxide, metal compounds such as sodium acetate, magnesium, and the like. It is effective when

The liquid crystalline resin (A) used in the present invention is capable of measuring logarithmic viscosity in pentafluorophenol, and in that case, it is measured at a concentration of 0.1 g / dl at 60 ° C. Is preferably 0.5 or more, and particularly when the above structural unit (III) is not included,
It is preferably from 2.0 to 10.0 dl / g.

The liquid crystalline resin (A) used in the present invention
The melt viscosity of is preferably 10 to 20,000 poises,
In particular, 20 to 10,000 poise is more preferable. In addition,
This melt viscosity is a value measured by a high-pressure capillary viscometer under conditions of melting point (Tm) + 10 ° C. and shear rate of 1,000 / sec.

Here, the melting point (Tm) means the endothermic peak temperature (Tm1) observed in the differential calorimetric measurement, which is observed when the polymerized polymer is measured from room temperature at a temperature rising condition of 20 ° C./min. , Tm1 + 20 ° C. for 5 minutes, then once cooled to room temperature under a temperature lowering condition of 20 ° C./min, and then measured again under a temperature rising condition of 20 ° C./min, the endothermic peak temperature (Tm2) observed Refers to. Further, the liquid crystal starting temperature is a temperature at which the liquid crystal is placed on a sample stand of a polarization microscope, heated and heated to emit opalescence under shear stress.

Preferred specific examples of the thermoplastic resin (B) used in the present invention are polyester, polyamide, polycarbonate, polyarylene oxide, polyarylene sulfide, polyetherimide, polyoxymethylene,
Examples include polystyrene. Among these, polyester and polycarbonate are more preferable. Further, the thermoplastic resin may be one kind or two or more kinds. The individual resins will be specifically described below.

The thermoplastic polyester is a polyester which is thermoplastic and has an aromatic ring as a chain unit of the polymer, and is an aromatic dicarboxylic acid (or its ester-forming derivative) and a diol (or its ester-forming derivative). Is a polymer or copolymer obtained by a condensation reaction containing as a main component. Examples of the dicarboxylic acid used herein include terephthalic acid, isophthalic acid, phthalic acid, 2,
6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p
-Carboxyphenyl) methane, anthracene dicarboxylic acid, 4,4'-biphenylcarboxylic acid, 4,4'-diphenylethercarboxylic acid, 1,2-bis (p-carboxyphenoxy) ethane, or its ester-forming derivative. Be done. If it is 30 mol% or less, aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid, dodecanedioic acid and dimer acid, 1,
It may be substituted with an alicyclic carboxylic acid such as 4-cyclohexanedicarboxylic acid or 1,3-cyclohexanedicarboxylic acid. As the diol component, an aliphatic diol having 2 to 10 carbon atoms, that is, ethylene glycol, propylene glycol, butylene glycol, 1,5-pentane glycol, decamethylene glycol, 3-methyl-
1,3-propenediol, neopentyl glycol,
Examples thereof include, but are not limited to, cyclohexanedimethanol and cyclohexanediol. Specific examples of preferable polyesters include polyethylene terephthalate, polybutylene terephthalate, polyethylene-1,2-bis (phenoxy) ethane-4,
4'-dicarboxylate, polyethylene-2,6-naphthalate, poly-1,4-cyclohexanedimethylene terephthalate, etc. and polyethylene terephthalate / isophthalate, polybutylene terephthalate / isophthalate, polybutylene terephthalate / sebacate, polybutylene terephthalate / Copolyesters such as decane dicarboxylate and poly-1,4-cyclohexane dimethylene terephthalate / isophthalate may be mentioned. Among these, particularly preferred polyesters include polybutylene terephthalate, polyethylene terephthalate, and poly-1,4-cyclohexanedimethylene terephthalate.

As the polyamide, polyamide obtained from ω-amino acid or ω-lactam, or dicarboxylic acid such as diamine or m-xylenediamine and adipic acid, sebacic acid, dodecanedioic acid, cyclohexanedicarboxylic acid, terephthalic acid or isophthalic acid is used. And homopolymers or copolymers obtained from the above, mixed polymers and the like. Preferred polyamides are homopolyamides such as nylon 6, nylon 11, nylon 12, nylon 46, nylon 66, and adipic acid / terephthalic acid / hexamethylenediamine, adipic acid / 1,4-cyclohexanedicarboxylic acid / hexamethylenediamine, adipine. Examples thereof include copolyamides such as acid / 1,3-cyclohexanedicarboxylic acid / hexamethylenediamine, terephthalic acid / isophthalic acid / hexamethylenediamine / paraaminocyclohexylmethane.

Examples of polycarbonate include bis (4-hydroxyphenyl), bis (3,5-dialkyl-4-).
Hydroxyphenyl) or bis (3,5-dihalo-4)
Polycarbonates based on hydrocarbon derivatives with -hydroxyphenyl) substitution are preferred, and polycarbonates based on 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) are particularly preferred.

As the polyarylene oxide, poly (2,6-dimethyl-1,4-phenylene) ether,
2,6-dimethylphenol / 2,3,6-trimethylphenol copolymer, 2,6-dimethylphenol /
2,3,6-triethylphenol copolymer and the like can be mentioned. Polyarylene oxide includes polystyrene,
A styrenic resin such as high impact polystyrene can be added.

The polyarylene sulfide is a bond of an aromatic ring and sulfur. Preferred polyarylene sulfides include polyparaphenylene sulfide, which may be partially branched.

In producing the liquid crystalline resin composition of the present invention, a conventionally known polyester polymerization catalyst,
Additives such as heat-resistant agents, weather-resistant agents, antistatic agents, dyes, colorants, crystal nucleating agents, flame retardants, talc, clay, mica, calcium metasilicate, silica sand, glass beads, glass flakes, and potassium whisker titanate. It is also possible to add an inorganic filler such as gypsum fiber, a reinforcing agent such as glass fiber, asbestos fiber and carbon fiber, and a thermoplastic polymer other than polyester and polyamide.

As a method of mixing the liquid crystal resin (A) and the thermoplastic resin (B), various methods can be applied. Examples of the apparatus for melt mixing include a mixing roll, a Banbury mixer, a kneader, and an extruder,
Of these, an extruder is preferable. This extruder is a single screw,
Alternatively, any of those having two or more screws can be used, but it is particularly preferable to use a twin screw extruder. The kneading temperature is preferably higher than the liquid crystal starting temperature of the liquid crystalline resin (A), and more preferably higher than the melting point of the liquid crystalline resin (A).

A preferable method for producing the liquid crystalline resin composition of the present invention is to stretch the melt blended product. Various methods are conceivable for stretching the blend, but stretching by winding with a roller or stretching by a cutter is preferable. In particular, a method in which the molten blend extruded from the extruder is stretched by a roller as it is is preferable.
When the ratio of the winding speed by the roller or the pulling speed by the cutter to the feeding speed of the gut is defined as the extension ratio, this value is preferably 4 or more, more preferably 6 or more. When it is within the above range, the liquid crystal phase is sufficiently aligned, and a large effect of improving the physical properties can be expected.

In the present invention, the dispersion state of the liquid crystalline resin in the blend can be observed by a scanning electron microscope or a transmission electron microscope. For example, the extension gut is cut parallel to the extension direction of the resin, and the aspect ratio of each particle of the liquid crystalline resin (A) in the fibrous orientation is measured by observing with a scanning electron microscope, and an average value is calculated, The average aspect ratio can be calculated. The average aspect ratio of the dispersed particles of the liquid crystalline resin in the blend observed by this method is 5
Or more, more preferably 10 or more,
More preferably, it is 30 or more. If this value is less than 5, no significant improvement in physical properties is observed.

When a molded article is obtained from the liquid crystalline resin composition of the present invention, usual methods such as injection molding, extrusion molding and blow molding can be applied, but injection molding is particularly preferable. The molding temperature is preferably not higher than the melting point of the liquid crystalline resin (A), more preferably not higher than the liquid crystal starting temperature of the liquid crystalline resin (A), and when molded at this temperature, dispersion after stretching The state is preferably maintained, the dispersed state is almost unchanged inside the test piece and the surface layer portion, and the effect of improving the physical properties is exhibited.

[0041]

EXAMPLES The present invention will be described in more detail with reference to examples below, but these examples do not limit the scope of application of the present invention. In addition, the part in an Example represents a weight part.

Reference Example 1 932 parts by weight of p-hydroxybenzoic acid, 210 parts by weight of 4,4'-dihydroxybiphenyl, 274 parts by weight of 2,6-diacetoxynaphthalene, 374 parts by weight of terephthalic acid and 1010 parts by weight of acetic anhydride were stirred. The reaction vessel was equipped with a blade and a distillation tube, and deacetic acid polycondensation was carried out under the following conditions.

First, 100 to 250 in a nitrogen gas atmosphere.
After reacting at 50 ° C for 5 hours and at 250 to 330 ° C for 1.5 hours, the pressure is reduced to 0.5 mmHg at 310 ° C for 1.5 hours,
When the reaction was further continued for 1.0 hour to complete the polycondensation, almost the theoretical amount of acetic acid was distilled off to obtain a liquid crystal polyester having the following theoretical structural formula.

[0044]

[Chemical 9]

K / l / m / n = 75 / 12.5 / 12.5 / 25 This polyester has a melting point of 282 ° C. and a liquid crystal starting temperature of 2
63 ° C, logarithmic viscosity (measured at 60 ° C in pentafluorophenol at a concentration of 0.1 g / dl) is 4.88 dl / g
And the melt viscosity at 292 ° C. and a shear rate of 1000 / sec was 910 poise.

Reference Example 2 1035 parts by weight of p-hydroxybenzoic acid, 186 parts by weight of 4,4'-dihydroxybiphenyl, acetic anhydride 1066
Parts by weight, 166 parts by weight of terephthalic acid and 336 parts by weight of polyethylene terephthalate having an intrinsic viscosity of about 0.6 dl / g are charged into a reaction vessel equipped with a stirring blade and a distillation tube, and deacetic acid polycondensation is performed under the following reaction conditions. It was

First, 100 to 250 in a nitrogen gas atmosphere.
After reacting at 290 ° C for 1.5 hours, 290 ° C and 2 hours at 0.
When the pressure was reduced to 5 mmHg and the reaction was further continued for 1.0 hour to complete the polycondensation, almost the theoretical amount of acetic acid was distilled off, and a liquid crystal polyester having the following theoretical structural formula was obtained.

[0048]

[Chemical 10]

K / l / m / n = 75/10/15/25 This polyester has a melting point of 294 ° C. and a liquid crystal starting temperature of 2
75 ° C, logarithmic viscosity (measured at 60 ° C in pentafluorophenol at a concentration of 0.1 g / dl) is 1.62 dl / g
And the melt viscosity at 304 ° C. and a shear rate of 1000 / sec was 710 poise.

Examples 1 to 6, Comparative Examples 1 to 5 (A) Liquid crystalline polyester A-1 or A-2, (B) Polybutylene terephthalate (PBT, intrinsic viscosity 1.20)
dl / g) was weighed in a predetermined amount and dry-blended. Melt extrusion was performed by a 30 mmφ twin-screw extruder set at 270 to 300 ° C. The molten blend after extrusion was stretched with a roller at various winding speeds to control the dispersed state of the liquid crystalline resin. The take-up speed with respect to the gut supply speed was taken as the extension ratio. The winding gut was cut parallel to the stretching direction, and the central portion was observed with a scanning electron microscope to determine the average aspect ratio of the liquid crystalline resin dispersed particles. Table 1
Shows the expansion ratio and the average aspect ratio. This gut is pelletized, dried, and then injection-molded at a cylinder temperature of 240 ° C. and a mold temperature of 120 ° C. using an 1/8 ″ thickness × 1 /
2 "wide x 5" long test piece and 1/8 "thick AS
TM No. 1 dumbbell was molded. Bending strength is 1 /
Using a test piece of 8 "thickness x 1/2" width x 5 "length, the measurement was performed with a Tensilon UTM-200 manufactured by Toyo Baldwin Co., Ltd. under the conditions of a strain rate of 1 mm / min and a span distance of 50 mm. Further, ASTM D638 According to AS
TM No. The tensile strength of 1 dumbbell was measured.
Table 1 shows the results of these tests. Further, the center part of the molded test piece was cut in the flow direction, and the average aspect ratio of the liquid crystal resin was determined. This value was almost the same as the aspect ratio of the extruded gut and did not change before and after forming.

[0051]

[Table 1]

From the results in Table 1 above, it is understood that when the average aspect ratio is 5 or more, both tensile strength and bending strength are improved as compared with those having an average aspect ratio of 3 or less.

Examples 7 to 9 and Comparative Examples 6 to 8 (A) 20 parts of liquid crystal polyester A-2 and 80 parts of (B) thermoplastic resin shown in Table 2 were weighed and dry blended. Melt extrusion was performed by a 30 mmφ twin-screw extruder set to 270 to 320 ° C. The molten blend after extrusion was stretched with a roller at various winding speeds to control the dispersed state of the liquid crystalline resin. The take-up speed with respect to the gut supply speed was taken as the extension ratio. The winding gut was cut parallel to the stretching direction, and the central portion was observed with a scanning electron microscope to determine the average aspect ratio of the liquid crystalline resin dispersed particles. Further, the gut was pelletized and dried, and then the same test pieces as those in Examples 1 to 6 were molded, and the tensile strength and the bending strength were measured.
Furthermore, the center part of the molded test piece was cut in the flow direction and the average aspect cost of the liquid crystalline resin was determined, but the values for the extrusion gut and the molded test piece were almost the same.

[0054]

[Table 2]

From the results shown in Table 2 above, it is understood that when the average aspect ratio is 40, both tensile strength and bending strength are improved.

[0056]

The molded article obtained from the liquid crystalline resin composition according to the present invention has excellent mechanical properties and heat resistance, and can be widely used in applications such as electric and electronic equipment parts and automobile parts. ..

Claims (4)

[Claims] 1. A melt-molding process can be carried out at (A) 1 to 50% by weight of a liquid crystalline resin forming an anisotropic molten phase, and (B) at a temperature lower than the liquid crystal starting temperature of the liquid crystalline resin (A). In a resin composition containing 99 to 50% by weight of one or more thermoplastic resins, the liquid crystalline resin (A) becomes dispersed particles having an average aspect ratio of 5 or more to form the thermoplastic resin (B). A liquid crystalline resin composition characterized by being dispersed in a matrix phase. 2. A liquid crystalline resin (A) which forms an anisotropic molten phase.
The liquid crystalline resin composition according to claim 1, wherein is a liquid crystalline polyester resin comprising the following structural units (I), (II), (IV) or (I), (II), (III), (IV). [Chemical 1] (However, in the formula, R1 is R1 represents one or more groups selected from Represents one or more groups selected from Further, in the formula, X represents a hydrogen atom or a chlorine atom, and the structural unit [(II) + (I
II)] and structural unit (IV) are substantially equimolar. ) 3. The liquid crystalline resin (A) according to claim 1 and the thermoplastic resin (B) are melt-blended at a temperature equal to or higher than the liquid crystal initiation temperature of the liquid crystalline resin (A), and the molten blend is stretched at a stretching ratio of 4 The method for producing a liquid crystalline resin composition according to claim 1 or 2, wherein the stretching is performed as described above. 4. A molded product obtained by molding the resin composition according to claim 1 at a liquid crystal starting temperature of the liquid crystalline resin (A) or lower, in which the liquid crystalline resin (A) is average. A molded article, which is dispersed particles having an aspect ratio of 5 or more and dispersed in the matrix phase of the thermoplastic resin (B).