JPH0418447A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:To obtain a resin composition, composed of a modified polyphenylene sulfide and a polycarbonate, good in balance between flexibility such as impact resistance and mechanical strength and excellent in hydrolytic and solvent resistance and further molding processability. CONSTITUTION:A thermoplastic resin composition containing (A) 10-98 pts.wt. modified polyphenylene sulfide prepared by reacting a polyphenylene sulfide (hereinafter referred to as PPS) with a resin (preferably ethylene-glycidyl methacrylate copolymer, etc.) having functional groups with the affinity for the PPS under specific conditions, (B) 90-2 pts.wt. polycarbonate (preferably having 4,4'-dioxyphenyl-2,2'-propane in constituent units) and preferably further (C) a thermoplastic elastomer (preferably a polyolefinic or polystyrene-based elastomer) in an amount of 3-60 pts.wt. based on 100 pts.wt. resin composed of the components (A) and (B).

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is made of polyphenylene sulfide and polycarbonate, which have a good balance between flexibility such as impact strength and mechanical strength, and have excellent hydrolysis resistance and resistance. Excellent solvent properties,
The present invention also relates to a thermoplastic resin composition having excellent moldability.

The thermoplastic resin composition of the present invention can be used for mechanical parts, automobile parts,
Can be used for electrical/electronic parts, etc.

[Conventional technology and problems]

Polyphenylene sulfide (hereinafter simply referred to as PPS) has excellent mechanical strength, heat resistance, solvent resistance, etc., and is flame retardant, so it is used to improve the rigidity and heat resistance of machinery, electrical/electronic parts, automobile parts, etc. Applications are being actively developed in fields where this is required.

However, the impact strength of PPS is extremely low, making it difficult to use this resin alone as a molding material.Furthermore, during injection molding, unless the mold temperature is raised to 120°C or higher, the original strength and surface PPS has drawbacks such as difficulty in obtaining molded products in good condition, and it is desired to improve the impact strength and moldability of PPS.

On the other hand, polycarbonate c and below are simply referred to as PC. ) is an engineering plastic with excellent transparency and impact strength, and is being actively developed for use in building materials, machinery, and electrical fields.

However, PC has drawbacks such as poor hydrolysis resistance and solvent resistance, and improvements are desired.

Conventionally, in order to improve the impact strength of PPS, many resin compositions have been proposed in which PPS is melt-blended with reinforcing materials or various engineering plastics such as PC.

For example, JP-A No. 51-100150 discloses a resin composition consisting of pps, a thermoplastic resin such as PC, polyamide, or thermoplastic polyester, a fluororesin, and carbon fiber; A reinforced resin composition consisting of fibers was disclosed in Japanese Patent Application Laid-Open No. 55-45.
No. 704 discloses a resin composition consisting of PPS and PC, and JP-A-58-152019 discloses a resin composition consisting of PPS and PC or thermoplastic polyester treated with a non-oxidizing organic or inorganic acid. , JP-A-59-1
No. 55461 proposes a resin composition consisting of PPS, PC, and an epoxy resin, and JP-A-63-275667 proposes a resin composition consisting of PPS treated with oxidative infusibility treatment, PC, and a thermoplastic resin such as polyamide. ing.

[Problem to be solved by the invention]

However, in the various proposals for improving PPS mentioned above, a resin composition consisting of PPS, thermoplastic resin such as PC, polyamide, thermoplastic polyester, fluororesin, and carbon fiber disclosed in JP-A-51-100150 has been proposed. The impact strength of reinforced resin compositions made of PPS and reinforcing materials such as glass fibers disclosed in Japanese Patent Laid-Open No. 52-73275 is high, but the melt viscosity is significantly lower than that of PPS alone. The range of applications is limited due to drawbacks such as the increase in molding properties, poor molding processability, poor surface smoothness of the resulting molded product, and non-uniform dispersion of reinforcing materials in thin-walled molded products, making them more likely to crack. .

JP-A-55-45704, JP-A-58-1520
The resin compositions made of PPS and various engineering plastics disclosed in Publication No. 19, Japanese Patent Application Laid-open No. 63-275667, etc., do not have much impact strength when unreinforced and do not contain reinforcing materials such as glass fibers. It is not a resin composition that satisfies the purpose of the present invention because it has the disadvantage that the mechanical strength such as tensile strength is lower than the value estimated from the constituent resins.

JP-A-59-155461 discloses a proposal regarding a resin composition in which various epoxy resins are added for the purpose of improving the mixing and dispersibility of PPS and PC, but even with these methods, it is difficult to obtain a non-reinforced resin composition. The impact strength of is hardly improved.

The present invention provides high impact strength and excellent hydrolysis resistance and solvent resistance without significantly reducing the mechanical strength such as tensile strength of PPS (without adding reinforcing materials such as glass fiber). The object of the present invention is to provide a thermoplastic resin composition having excellent molding processability and capable of producing good molded products even when the mold temperature during injection molding is 120°C or lower.

[Means to solve the problem]

According to the invention, (a) 10 to 98 parts by weight of modified PPS and (b) P
Provides a thermoplastic resin composition consisting of C90-2 parts by weight,
Furthermore, the present invention comprises (a) 10 to 98 parts by weight of modified PPS and (b) P
The present invention provides a thermoplastic resin composition in which 3 to 60 parts by weight of a thermoplastic elastomer (c) is blended with 100 parts by weight of a resin consisting of 90 to 2 parts by weight of C90.

The thermoplastic resin composition of the present invention can be produced by blending modified PPS as the (a) component and PC as the (b) component in a specific ratio, and further comprising modified PPS as the (a) component.
By blending PC as component (b) and thermoplastic elastomer as component (c) in a specific ratio, it has a good balance of flexibility such as impact strength and mechanical properties, and also improves hydrolysis resistance, which is the drawback of PC. This resin composition has improved solvent resistance, can produce good molded products even at mold temperatures of 120°C or lower, and can be used without the need for reinforcing materials.

The PPS used in the present invention preferably has a phenylene sulfide unit structure represented by the following structural formula (1) in an amount of 70 mol % or more in view of heat resistance, solvent resistance, and mechanical properties. If the phenylene sulfide unit content is less than 70 mol%, heat resistance will decrease.

The remaining 30 mol% is a meta bond represented by the following structural formula (2), an ether bond represented by structural formula (3), a sulfone bond represented by structural formula (4), and an alkyl group in which R has 12 or less carbon atoms in structural formula (5). Substituted phenylene sulfide unit of either group or alkoxy group, phenyl group and nitro group, structural formula (6)
Biphenyl bond, structural formula (consisting of a naphthyl bond and a trifunctional phenyl sulfide bond, etc.).

In the present invention, the PPS having the above structure has a melt flow rate of 5 to 10000 g/10 minutes, preferably 5 to
500g/10 minutes is used.

Commercially available PPSs can be used as these PPSs. For example, the product name “Rydon P” manufactured by Philips
These include P5J, the product name "Toprene" manufactured by Tobren Corporation, the product name "Susteel" manufactured by Tosoh Sasteel Co., Ltd., and the product name "Fortron j" manufactured by Kureha Chemical Industry ■.

The modified PPS in the present invention is the PP used in the present invention.
It can be obtained by reacting S with a resin having a functional group that has an affinity for PPS under specific conditions.

Examples of functional groups having affinity with PPS include epoxy groups and acid anhydride groups.

For example, when the functional group is an epoxy group, the resin having a group having an affinity for PPS used in the present invention is a combination of a glycidyl group-containing compound of an α,β-unsaturated acid and a vinyl monomer, or a functional group When is an acid anhydride group, it can be obtained by a copolymerization reaction of an acid anhydride group-containing compound of an α,β-unsaturated acid and a vinyl monomer.

The glycidyl group-containing compound of α,β-unsaturated acid has the general formula (
8) and (9), and specific examples include glycidyl acrylate, glycidyl methacrylate, glycidyl ethacrylate, glycidyl itaconate, allyl glycidyl ether, and vinyl glycidyl ether. Among these, glycidyl methacrylate is preferred.

Specific examples of α,β-unsaturated acid anhydride group-containing compounds include maleic anhydride, phthalic anhydride, itaconic anhydride, and brominated maleic anhydride.

Vinyl monomers include ethylene, propylene, butylene, butadiene, isoprene, acrylonitrile,
Examples include methyl acrylate, methyl methacrylate, styrene, methylstyrene, vinylxylene, dichlorostyrene, bromustyrene, cyfuromstyrene, P-t-butylstyrene, ethylstyrene, and vinylnaphthalene.

Glycidyl group-containing compounds of α, β-unsaturated acids or α
The reaction ratio of the acid anhydride group-containing compound of the β-unsaturated acid and the vinyl monomer is the weight ratio of the glycidyl group-containing compound of the α,β-unsaturated acid or the acid anhydride of the α,β-unsaturated acid. Group-containing compound: vinyl monomer = 0.5-40:
99.5-60, preferably 2-20: 98-80
It is better to

α, β-Unsaturated acid glycidyl group-containing compound Yes α
If the amount of the acid anhydride group-containing compound of the β-unsaturated acid is less than 0.5 parts by weight, the reaction rate with PPS will be slow and impractical, and if it is more than 40 parts by weight, the vinyl-based compound containing these functional groups This is not preferred because it makes it difficult to synthesize the resin.

As mentioned above, the resin having a functional group having an affinity for PPS of the present invention is a compound containing a glycidyl group of an α,β-unsaturated acid or a compound containing an acid anhydride group of an α,β-unsaturated acid, and a vinyl It is a copolymer with other monomers. The copolymer may be a random copolymer, a block copolymer, a graft copolymer or a mixture thereof. It is usually preferable to use a random copolymer.

The number average molecular weight of the resin having this functional group is 3.000
~120,000, preferably 10,000-170
,000. This number average molecular weight can be adjusted by adjusting the amount of radical initiator used in the copolymerization reaction, reaction temperature, etc.

Specific examples of resins having functional groups that have affinity with PPS include acid anhydride modified products or glycidyl compound modified products of hydrogenated styrene-butadiene-styrene block copolymers, ethylene-glycidyl methacrylate copolymers, and glycidyl compounds. Examples include modified compounds, acid anhydride modified products of ethylene-propylene copolymer, and glycidyl compound modified products.

The method for producing modified PPS of the present invention utilizes a known radical polymerization method for the reaction of a glycidyl group-containing compound of an α,β-unsaturated acid or an acid anhydride group-containing compound of an α,β-unsaturated acid with a vinyl monomer. The polymerization can be carried out by bulk polymerization, solution polymerization, suspension polymerization or emulsion polymerization. In addition, this reaction may be performed by directly reacting the two, or by pre-polymerizing the vinyl monomers and then reacting them.

Glycidyl group-containing compounds of α, β-unsaturated acids or α
When reacting a β-unsaturated acid anhydride group-containing compound and a vinyl resin in a molten state, a melt mixer such as an extruder, co-kneader, or Banbury mixer may be used.

For example, PPS and a styrene copolymer or ethylene copolymer having an epoxy group are melt-kneaded in the presence or absence of an acid catalyst at a temperature of 280°C or higher, preferably 290 to 320°C. After kneading and reacting at a temperature of 20 minutes or more, preferably 30 minutes or more, the reaction mixture is thoroughly washed with high-temperature xylene or the like to remove the unreacted epoxy group-containing copolymer (a). A modified PPS of the components can be obtained. The reaction rate of this modification reaction is very slow, and even if this reaction is carried out using a twin-screw kneader under known compound manufacturing conditions, the reaction time is too short, making it difficult to produce modified PPS. When the reaction is carried out, it is necessary to set specific reaction conditions as described above.

In addition, PPS and a styrene copolymer or ethylene copolymer having an epoxy group can be combined with α-chlornaphthalene, N
- After reacting in a solution such as methyl-2-pyrrolidone in the presence or absence of an acid catalyst at a temperature of 180 °C or higher, preferably 200-250 °C for 30 minutes or more, the reaction mixture is heated to an elevated temperature. By washing with xylene etc. and removing the copolymer having unreacted epoxy groups, (a
) It is also possible to synthesize modified PPS of the component.

If a reaction mixture in which a copolymer with unreacted epoxy groups remains is used, the mixing and dispersibility of component (a) and component (b) or (c) will be poor, and impact strength may not be improved sufficiently. This is not preferable because it may not be effective or the strength may be significantly reduced.

The reaction ratio of PPS and resin having a functional group is 60
~98 parts by weight, 2 to 40 parts by weight of resin having functional groups,
Preferably, the amount of PPS is 70 to 95 parts by weight, and the amount of resin having a functional group is 5 to 30 parts by weight. If PPS exceeds the above upper limit, the dispersibility with component (b) or (c) will deteriorate, and the effect of improving impact strength will be small; on the other hand, if it is less than the above lower limit, the mechanical strength of the PPS resin composition obtained will decrease. decreases, which is not desirable.

PC, which is the component (b) of the present invention, is a resin having a carbonate bond in its main chain, and a typical example is a caustic alkali aqueous solution using a 4,4'-dioxydiarylalkane compound as a dioxy compound. and the phosgene method produced by blowing phosgene in the presence of a solvent, or 4.4
It is produced by a transesterification method, etc., in which a '-dioxydiarylalkane and a diester carbonate are transesterified in the presence of a catalyst.

Specific examples of PC used in the present invention include 4,4'-dioxydiphenylmethane, 4,4'-dioxydiphenyl-2,
2'-propane, 4.4'-dioxy-2,2'-dichlorodiphenylethane, 4°4'-dioxy-3,3'
-dimethylphenyl-2,2'-propane, 2,2-bis-(4-hydroxy-3,5-dibromophenyl)-
Examples include those obtained by reacting 4,4'-dioxydiarylalkane such as furopane with phosgene or diphenyl carbonate. Of these, 4.4
An aromatic polycarbonate having 4,4'-dioxydiphenyl-2,2'-propane, which is a '-dioxydiarylalkane-based polycarbonate, as a constituent unit is preferred from the viewpoint of moldability and heat resistance.

The thermoplastic resin composition of the present invention is modified PPS as component <a>.
10 to 98 parts by weight, preferably 30 to 95 parts by weight,
PC of component (b): 90-2 parts by weight, preferably 70-5
Consists of parts by weight. If the amount of modified PPS used is less than the above-mentioned lower limit, the resulting thermoplastic resin composition has the drawback of low strength such as tensile strength, and if the amount of modified PPS used is more than the above-mentioned upper limit, the impact strength is almost improved. This is not desirable because it is not possible.

Further, the thermoplastic resin composition of the present invention can be used in the above-mentioned (a), (
Although it can be obtained by various combinations of components b), in order to further obtain a thermoplastic resin composition having high impact strength, in the present invention, a thermoplastic elastomer is added to components (a) and Q)) as component (c). Can be added.

As the thermoplastic elastomer that can be used as component (c) of the present invention, known ones such as polyolefin elastomers, polystyrene elastomers, polyamide elastomers, and polyester elastomers can be used, but polyolefin elastomers and polystyrene elastomers are preferable. Can be used.

Specific examples of polyolefin elastomers include ethylene-(meth)acrylic acid copolymer, ethylene-vinyl acetate copolymer, ethylene-propylene-ethylidene norbornene copolymer (EPDM rubber), and anhydrous ethylene-propylene copolymer. Acid anhydride modified products such as maleic acid or glycidyl compound modified products such as glycidyl methacrylate, acid anhydride modified products of ethylene-butene-1 copolymer using maleic anhydride etc., or glycidyl compound modified products such as glycidyl methacrylate etc. There is.

Specific examples of polystyrene-based elastomers include styrene-butadiene-styrene block copolymers, styrene-
Isoprene-styrene block copolymer, hydrogenated styrene-butadiene-styrene flock copolymer, hydrogenated styrene-isoprene-styrene block copolymer, acid anhydride modified products of these block copolymers with maleic anhydride, etc., or methacrylate There are glycidyl compound modified products such as glycidyl acid.

The amount of the thermoplastic elastomer which is the component (c) of the present invention is the modified PPS of the component (a) of the present invention from 10 to 98
The amount is 3 to 60 parts by weight, preferably 5 to 40 parts by weight, based on 100 parts by weight of the resin composed of 90 to 2 parts by weight of component (b) P3. If the amount of thermoplastic elastomer used is less than the above lower limit, even if component (c) is added, (
The impact strength of the thermoplastic resin composition composed of components a) and (b) is almost unchanged, and the combination of component (c) is meaningless.
Moreover, when the amount is more than the above upper limit, the strength such as tensile strength of the thermoplastic resin composition decreases significantly, which is not preferable.

In the resin composition of the present invention, reinforcing materials and fillers in various shapes such as fibrous, powder, flake, and mantle shapes can be used as long as the molded product and physical properties are not impaired.

Specific examples of reinforcing materials and fillers that can be used in the present invention include:
Glass fiber, asbestos fiber, carbon fiber, silica fiber, silica/alumina fiber, alumina fiber, zirconia fiber, boron nitride fiber, silicon nitride fiber, boron fiber,
Metal fibers such as stainless steel, aluminum, titanium, copper, brass, and magnesium, organic fibers such as polyamide, fluororesin, polyester, and acrylic resin, copper, iron, nickel, zinc, soot, lead, stainless steel, aluminum, gold, and silver. Metal powder such as fumed silica, aluminum silicate, glass beads, carbon blank, quartz powder, talc, titanium oxide, iron oxide, rhusium carbonate, etc.
There is diatomaceous earth. In the case of fibrous substances, those having an average fiber diameter of 0.1 to 30 μm and a fiber length of 50 μm or more can be preferably used.

These reinforcing materials and fillers may also be surface-treated with a known silane coupling agent or titanate coupling agent.

The amount of reinforcing material and filler used is 100% of the resin composition of the present invention.
1 to 300 parts by weight, preferably 10 to 2 parts by weight
It is 50 parts by weight.

These reinforcing materials and fillers can be used alone or in combination of two or more.

The resin composition of the present invention may contain antioxidants and heat stabilizers such as hindered phenol, hydroquinone, thioether, phosphites and substituted products thereof, and copper compounds, resorcinol, UV absorbers such as salicylates, benzotriazoles, and benzophenones, mold release agents such as stearic acid and its salts, and stearyl alcohol, flame retardants such as halogen-based, phosphate ester-based, melamine or cyanuric acid-based flame retardants, and antimony trioxide. It is also possible to add one or more additives such as auxiliaries, sodium dodecylbenzenesulfonate, antistatic agents such as polyalkylene glycol, crystallization promoters, dyes, and pigments.

It is also possible to add small amounts of thermoplastic resins such as polyethylene, polypropylene, polyamide, polyester, polysulfone, and thermosetting resins such as phenol resins, melamine resins, silicone resins, and epoxy resins.

The resin composition of the present invention can be produced at a temperature of 275°C or higher, preferably 285 to 350°C, using ordinary melt-kneading processing equipment such as an extruder, Banbury mixer, or kneader. Furthermore, it can be processed into molded products for various uses by injection molding, compression molding, extrusion molding, etc.

Examples of the present invention will be described in detail below. However, the present invention is not limited to this implementation.

The tensile strength, impact strength, hydrolysis resistance, solvent resistance, mold release time, and appearance conditions described in Examples and Comparative Examples were measured by the following methods.

(1) Tensile strength Measured according to ASTM D638.

(Unit: kgf/cm”) (2) Impact strength (notched isonodal impact strength) AST
Measured according to MD256. The thickness of the test piece is 1
It is 78 inches.

(Unit: kgf cm/cm) (3) Hydrolysis Resistance The tensile strength of a Type I tensile test piece with a thickness of 178 inches according to ASTM D638 was left in pressurized steam at 123°C for 72 hours. The retention rate was measured.

(Unit: kgf/Cl112) (4) Solvent resistance A Type I tensile test piece with a test piece thickness of 1/8 inch according to ASTM D638 was placed in acetone at 23°C for 7 hours.
The weight change rate and tensile strength retention rate after 2 hours of immersion were measured.

(Unit: %) (5) Mold release time Injection molding temperature 300°C 1 Mold temperature 60″C and 14
0°C1 injection pressure cuff 50 kg/cil! (7) Conditions: When a bending test piece with a thickness of 174 inches was molded according to AsTM D790, the mold release time was measured without affecting the appearance of the molded product, such as the state of dents and deformation of the dowel pin. (Unit: seconds) (6) Appearance condition Injection molding temperature: 300°C1 Mold temperature: 60°C and 14
Myanmar 10c under the condition of 0°C1 injection pressure 980kg/afl
A test piece with a width of 10 cm, a width of 10 C, and a thickness of 0.2 mm was molded, and the appearance of the obtained molded product was observed and evaluated according to the following criteria.

Good appearance was rated ○, molded product surface was partially whitened Δ, and molded product surface peeled was rated ×.

Production Example 1 - 85 parts by weight of PPS A-1's PP5- (trade name, Toprene T-4, manufactured by Toblen Co., Ltd.) was put into a Brabender type melt-kneading machine, melted at 295°C, and then bonded. First E (trade name, manufactured by Sumima Kagaku Co., Ltd., copolymer of ethylene and glycidyl methacrylate, epoxy group concentration 6.86 x 10-
' mol/g) and 0.5 parts by weight of pyromellitic dianhydride were added, and 3 parts by weight were added uniformly in a nitrogen gas atmosphere.
Mixed for 0 minutes to allow reaction. This reaction mixture was pulverized and sufficiently boiled at the boiling point of xylene, and then unreacted bond firth 1-E was removed from the reaction mixture by heating filtration to obtain modified PPS. The amount of Bond Firth 1-E reacted with PPS was 10.8 parts by weight. In addition, if the reaction time is O minutes, the reaction amount of Bondfirth I-E is 1
．． The amount was as small as 8 parts by weight.

The synthesized modified PPS was found to be P
It had specific absorption peaks for PS and polyethylene. In addition, the melting point (peak temperature by DSC measurement) of this modified PPS is 279°C, and the melting point of PPS alone (melting point 295°C)
It was slightly lower.

Production Example 2 97 parts by weight of epoxy styrene (ES) ゛1 Tough Tenk H1041 (trade name, manufactured by Asahi Kasei Corporation, hydrogenated styrene-butadiene-styrene block copolymer) was placed in a Brabender tumbler melt kneader, and
After melting at °C, 2.5 parts by weight of glycidyl methacrylate and 0.5 parts by weight of Perbutyl Z (trade name, manufactured by NOF Corporation) were added and mixed uniformly for 10 minutes under a nitrogen gas atmosphere to react. Ta.

This reaction mixture was pulverized and washed with acetone to obtain a styrenic resin to which epoxy groups were added.

The epoxy group concentration of this resin is 7. I x 10-'m
It was ol/g. In addition, the epoxy group concentration was determined by the titration method (JI
SK-7236).

Production Example 3 92 parts by weight of PPS (Toprene T-4) of PPS A-2 was placed in a Brabender type melt-kneader and melted at 300°C. system resin) 8 parts by weight and 0.2 parts of pyromellitic dianhydride
Parts by weight were added and mixed uniformly for 30 minutes under a nitrogen gas atmosphere to react.

This reaction mixture was pulverized and sufficiently boiled at the boiling point of chloroform, and then unreacted BS was removed from the reaction mixture by heating filtration to obtain modified PPS.

The amount of ES reacted with PPS was 6.2 parts by weight.

Note that when the reaction time was 10 minutes, the amount of ES reacted was as small as 1.3 parts by weight.

The synthesized modified PPS was found to be P
It had specific absorption peaks of PS and Toughtic H1041. In addition, the melting point (peak temperature by DSC measurement) of this modified PPS is 283"C, and the melting point of PPS alone (melting point 2
95°C).

Example 1.2 (A-1,) modified PPS and PCL1 synthesized in Production Example 1
225 (product name, Panlight manufactured by Ondai Kasei Co., Ltd.) in Table 1
The mixtures were blended on a subtable shown in Figure 1, and melt-kneaded using a twin-screw kneader with a screw diameter of 30 mm at a set temperature of 300°C to produce pellets.

Using this pellet, molding temperature: 300"C1 injection pressure: 9
Injection molding was performed under the conditions of 80 kg/cfil and a mold temperature of 140°C to obtain a test piece for measuring physical properties. Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 1.

Comparative Example 1 Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1 using PP5 (Toblen T-4). Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C.

The results are also shown in Table 1.

Comparative Example 2 Using PCLL225, pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1. Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance.

In addition, the mold releasability and appearance condition were determined at a mold temperature of 60°C and 1.
A sample molded at 40°C was evaluated. The results are also shown in Table 1.

Comparative example 3 PPS ()-prene T-4), Pc L1225
Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that the following were used in the proportions shown in Table 1.

Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 1.

Comparative Example 4 Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that PPS ()-prene T-4), PCL1225, and Bondfast E were used in the proportions shown in Table 1. Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 1.

Comparative Example 5 Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that PPS ()-prene T-4), PCL1225, and glycidyl methacrylate were used in the proportions shown in Table 1. Table 1 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C.

The results are also shown in Table 1.

Comparative Example 6 PPS (Toprene T-4), PCL1225 and Epiclon N-695 (trade name, manufactured by Dainippon Ink Co., Ltd.
Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that a novolac type epoxy resin was used in the proportions shown in Table 1. tensile strength, impact strength, hydrolysis resistance,
The measurement results of solvent resistance are shown in Table 1. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 1.

Examples 3 to 5 Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that various modified PPS, PC, and thermoplastic elastomers were blended in the proportions shown in Table 2. Table 2 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 2.

Comparative Example 7 PPS ()-prene T-4), PCL1225 and Tuftik M1913 (trade name, manufactured by Asahi Kasei Corporation, acid-modified hydrogenated styrene-butadiene-styrene blank copolymer)
Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that the following were blended in the proportions shown in Table 2. tensile strength,
The measurement results of impact strength, hydrolysis resistance, and solvent resistance are shown in Table 2. In addition, the mold releasability and appearance condition are determined at a mold temperature of 60°C.
And those molded at 140°C were evaluated. The results are also shown in Table 2.

Comparative Example 8 Pellets and test pieces for measuring physical properties were obtained in the same manner as in Example 1, except that PPS (Toblen T-4), PCL1225, Bondfast E, and Tuftik M1913 were blended in the proportions shown in Table 2.

Table 2 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 2.

Comparative Example 9 A pellet and a test piece for measuring physical properties were prepared in the same manner as in Example 1, except that PPS ()-Prene T-4), PCL1225, Evicron N-695, and Tuftik M 1913 were blended in the proportions shown in Table 2. Obtained.

Table 2 shows the measurement results of tensile strength, impact strength, hydrolysis resistance, and solvent resistance. In addition, mold releasability and external appearance were evaluated for moldings molded at mold temperatures of 60°C and 140°C. The results are also shown in Table 2.

(Effects of the invention) Thermoplastic resin compositions containing modified PPS and PC in specific proportions and thermoplastic resin compositions containing modified PPS, PC and thermoplastic elastomers in specific proportions have improved flexibility such as impact strength. It has a good balance with mechanical strength, has excellent hydrolysis resistance and solvent resistance, and can produce good molded products even at low mold temperatures, without being reinforced with reinforcing materials such as glass fiber. Can be used as a molding material.

Claims (2)

[Claims] (1) (a) Modified polyphenylene sulfide 10-9
A thermoplastic resin composition comprising 8 parts by weight and (b) 90 to 2 parts by weight of polycarbonate. (2) (a) Modified polyphenylene sulfide 10-9
A thermoplastic resin composition characterized by blending 3 to 60 parts by weight of (c) a thermoplastic elastomer to 100 parts by weight of a resin consisting of 8 parts by weight and (b) 90 to 2 parts by weight of polycarbonate.