KR20190082078A - Thermoplastic resin composition and article produced therefrom - Google Patents

Abstract

A thermoplastic resin composition of the present invention comprises 100 parts by weight of a rubber modified aromatic vinyl copolymer resin and 100 to 200 parts by weight of an encapsulated polyphenylene sulfide resin. The encapsulated polyphenylene sulfide resin is coated with an aromatic vinyl resin cross-linked on the entire surface or a part of a polyphenylene sulfide resin. The cross-linked aromatic vinyl resin is a polymer of a monomer mixture comprising an aromatic vinyl monomer and a cross-linking agent. The thermoplastic resin composition has excellent flame retardancy, thermal resistance and impact resistance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a thermoplastic resin composition and a molded article formed from the thermoplastic resin composition.

The present invention relates to a thermoplastic resin composition and a molded article formed therefrom. More specifically, the present invention relates to a thermoplastic resin composition excellent in flame retardancy, heat resistance and impact resistance, and a molded article formed from the composition.

As the thermoplastic resin, rubber-modified aromatic vinyl copolymer resins such as acrylonitrile-butadiene-styrene copolymer resin (ABS resin) and the like have excellent mechanical properties, processability, appearance and the like, Automobile interior / exterior materials, building exterior materials, and the like.

However, the rubber-modified aromatic vinyl-based copolymer resin itself has no resistance to combustion, and when the flame is ignited by an external ignition factor, the resin itself acts as energy that assists the combustion, and there is a fear that the fire is continuously diffused . Accordingly, researches for imparting flame retardancy to rubber-modified aromatic vinyl copolymer resins have been continuously conducted, and flame retardants such as halogen flame retardants, phosphorus flame retardants, and antimony compounds have been applied to the resin compositions. However, in the case of a rubber-modified aromatic vinyl copolymer resin, a halogen-based flame retardant is also applied because it does not have sufficient flame retardancy when applied only to a phosphorus-based flame retardant (V-2 flame retardancy). However, the use of halogen-based flame retardants is limited due to problems of human health. Further, when the flame retardant is used in an excessive amount for the purpose of improving the flame retardancy, the impact resistance and the mechanical properties of the resin composition may be deteriorated.

Therefore, it is necessary to develop a thermoplastic resin (rubber modified aromatic vinyl copolymer resin) composition which is excellent in flame retardance, heat resistance, impact resistance, and the like without the use of a halogen-based flame retardant.

The background art of the present invention is disclosed in Korean Patent Publication No. 10-2014-0085246.

An object of the present invention is to provide a thermoplastic resin composition having flame retardancy, heat resistance, impact resistance and the like.

Another object of the present invention is to provide a molded article formed from the thermoplastic resin composition.

The above and other objects of the present invention can be achieved by the present invention described below.

1. One aspect of the present invention relates to a thermoplastic resin composition. The thermoplastic resin composition comprises 100 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; And 100 to 200 parts by weight of an encapsulated polyphenylene sulfide-based resin, wherein the encapsulated polyphenylene sulfide-based resin is a polyphenylene sulfide-based resin in which an entire surface or part of the polyphenylene sulfide-based resin is coated with an aromatic vinyl- And the crosslinked aromatic vinyl resin is a polymer of a monomer mixture comprising an aromatic vinyl monomer and a crosslinking agent.

2. In the above embodiment, the rubber-modified aromatic vinyl-based copolymer resin may include a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin.

3. In the above-mentioned one or two embodiments, the rubber-modified vinyl-based graft copolymer may be one obtained by graft-polymerizing a monomer mixture comprising an aromatic vinyl monomer and a vinyl cyan monomer in a rubbery polymer.

4. In the above-mentioned one to three embodiments, the aromatic vinyl-based copolymer resin may be a polymer of a monomer mixture comprising an aromatic vinyl-based monomer and a vinyl cyanide-based monomer.

5. In the above-mentioned Embodiments 1 to 4, the encapsulated polyphenylene sulfide based resin may include 40 to 85% by weight of the polyphenylene sulfide based resin and 15 to 60% by weight of the crosslinked aromatic vinyl based resin .

6. The polyphenylene sulfide resin according to any one of 1 to 5 above, wherein the polyphenylene sulfide resin has a specific gravity of 1.3 to 1.5.

7. The crosslinked aromatic vinyl resin as described in any one of 1 to 6 above, which comprises 40 to 99% by weight of an aromatic vinyl monomer, not more than 55% by weight of a vinyl cyan monomer, and 0.5 to 5% by weight of a crosslinking agent Polymer.

8. In the above-mentioned Embodiments 1 to 7, the crosslinking agent may include at least one of ethylene glycol dimethacrylate, glycidyl (meth) acrylate, divinylbenzene, and trimethylolpropane triacrylate.

9. In the above-mentioned Embodiments 1 to 8, the average particle size of the encapsulated polyphenylene sulfide resin may be 20 to 1,000 m.

10. The thermoplastic resin composition according to any one of the above 1 to 9, wherein the flame retardancy of the 2 mm thick specimen measured by UL-94 vertical test method is higher than V-1.

11. The thermoplastic resin composition according to any one of the above 1 to 10, wherein the Vicat softening temperature measured under a load of 5 kg at 50 DEG C / hr according to ISO 306 is 90 to 110 DEG C.

12. The thermoplastic resin composition according to any one of 1 to 11 above, wherein the notched Izod impact strength of the 1/8 "thick specimen measured according to ASTM D256 is 6 to 10 kgf / cm / cm.

13. The thermoplastic resin composition according to any one of the above-mentioned 1 to 12, wherein the continuous phase comprising an aromatic vinyl copolymer resin is a dispersion of a rubber-modified vinyl-based graft copolymer and an encapsulated polyphenylene sulfide- Gt; structure. ≪ / RTI >

14. Another aspect of the present invention relates to a molded article. Wherein the molded article is formed from the thermoplastic resin composition according to any one of 1 to 13 above.

INDUSTRIAL APPLICABILITY The present invention has the effects of the invention providing a thermoplastic resin composition excellent in impact resistance, flame retardancy in film, heat resistance and fluidity and a molded article formed therefrom.

Hereinafter, the present invention will be described in detail.

The thermoplastic resin composition according to the present invention comprises (A) a rubber-modified aromatic vinyl-based copolymer resin; And (B) an encapsulated polyphenylene sulfide based resin.

In the present specification, "a to b" representing numerical ranges are defined as "? A and? B".

(A) a rubber-modified aromatic vinyl-based copolymer resin

The rubber-modified aromatic vinyl-based copolymer resin of the present invention may comprise (A1) a rubber-modified vinyl-based graft copolymer and (A2) an aromatic vinyl-based copolymer resin.

(A1) a rubber-modified vinyl-based graft copolymer

The rubber-modified vinyl-based graft copolymer according to one embodiment of the present invention may be one obtained by graft-polymerizing a monomer mixture comprising an aromatic vinyl monomer and a vinyl cyan monomer in a rubber-like polymer. For example, the rubber-modified vinyl-based graft copolymer can be obtained by graft-polymerizing a monomer mixture containing an aromatic vinyl monomer and a vinyl cyan monomer to a rubbery polymer, and if necessary, The graft polymerization may be further carried out by further including a monomer which imparts heat resistance. The polymerization may be carried out by a known polymerization method such as emulsion polymerization or suspension polymerization. Further, the rubber-modified vinyl-based graft copolymer may form a core (rubbery polymer)-shell (copolymer of a monomer mixture) structure, but is not limited thereto.

Examples of the rubbery polymer include a diene rubber such as polybutadiene, poly (styrene-butadiene) and poly (acrylonitrile-butadiene), a saturated rubber which is hydrogenated with the diene rubber, an isoprene rubber, A copolymer of an alkyl (meth) acrylate rubber having 2 to 10 carbon atoms, an alkyl (meth) acrylate having 2 to 10 carbon atoms and styrene, and an ethylene-propylene-diene monomer terpolymer (EPDM). These may be used alone or in combination of two or more. For example, diene rubber, (meth) acrylate rubber and the like can be used. Specifically, butadiene rubber, butyl acrylate rubber and the like can be used.

In an embodiment, the rubbery polymer (rubber particles) may have an average particle size (Z-average) measured by a particle size analyzer of 0.05 to 6 탆, for example, 0.15 to 4 탆, specifically 0.25 to 3.5 탆. Here, the average particle size can be measured by a transmission electron microscope (TEM). Within the above range, the thermoplastic resin composition may have excellent impact resistance and appearance characteristics. Here, the average particle size was measured by dry method using a Mastersizer 2000E series (Malvern) instrument according to a known method.

In an embodiment, the content of the rubbery polymer may be 20 to 70% by weight, for example 25 to 60% by weight, based on 100% by weight of the rubber-modified vinyl-based graft copolymer as a whole, and the monomer mixture (the aromatic vinyl- Containing vinyl monomer) may be 30 to 80% by weight, for example, 40 to 75% by weight, based on 100% by weight of the entire rubber-modified vinyl-based graft copolymer. Within the above range, the thermoplastic resin composition may have excellent impact resistance and appearance characteristics.

In an embodiment, the aromatic vinyl-based monomer may be graft-copolymerized with the rubbery polymer, and may be selected from the group consisting of styrene,? -Methylstyrene,? -Methylstyrene, p-methylstyrene, pt-butylstyrene, ethylstyrene, Monochlorostyrene, dichlorostyrene, dibromostyrene, vinylnaphthalene, and the like. These may be used alone or in combination of two or more. The content of the aromatic vinyl monomer may be 10 to 90% by weight, for example, 40 to 90% by weight, based on 100% by weight of the monomer mixture. Within the above range, the processability and impact resistance of the thermoplastic resin composition can be excellent.

In the specific examples, the vinyl cyanide monomer is copolymerizable with the aromatic vinyl system, and examples thereof include acrylonitrile, methacrylonitrile, ethacrylonitrile, phenyl acrylonitrile,? -Chloroacrylonitrile, For example. These may be used alone or in combination of two or more. For example, acrylonitrile, methacrylonitrile and the like can be used. The content of the vinyl cyanide monomer may be 10 to 90% by weight, for example, 10 to 60% by weight, based on 100% by weight of the monomer mixture. Within the above range, the thermoplastic resin composition may have excellent chemical resistance and mechanical properties.

In the specific examples, examples of the monomer for imparting the above processability and heat resistance include, but are not limited to, (meth) acrylic acid, maleic anhydride, N-substituted maleimide and the like. When the monomer for imparting processability and heat resistance is used, the content thereof may be 15% by weight or less, for example, 0.1 to 10% by weight, based on 100% by weight of the monomer mixture. Within the above range, the thermoplastic resin composition can be imparted with processability and heat resistance without deteriorating other physical properties.

In the specific examples, as the rubber-modified vinyl-based graft copolymer, a copolymer (g-ABS) in which an aromatic vinyl compound and an acrylonitrile monomer, which are aromatic vinyl compounds and a vinyl cyanide compound, are grafted to a butadiene rubber- Styrene-acrylonitrile graft copolymer (g-ASA), which is a copolymer obtained by grafting an aromatic vinyl compound, a styrene monomer, and an acrylonitrile monomer, which is a vinyl cyanide compound, have.

In the specific example, the rubber-modified vinyl-based graft copolymer (A1) may be contained in an amount of 10 to 60% by weight, for example, 20 to 50% by weight, based on 100% by weight of the whole rubber-modified aromatic vinyl- have. Within the above range, the thermoplastic resin composition may have excellent impact resistance and moldability.

(A2) an aromatic vinyl-based copolymer resin

The aromatic vinyl-based copolymer resin according to one embodiment of the present invention may be a polymer of a monomer mixture comprising an aromatic vinyl monomer and a vinyl cyanide monomer.

In an embodiment, the aromatic vinyl-based copolymer resin may be obtained by mixing an aromatic vinyl-based monomer and an aromatic vinyl-based monomer with a vinyl cyanide-based monomer, and then polymerizing the resultant. If necessary, the monomer mixture may have processability and heat resistance To the above-mentioned polymerizable monomer. The polymerization can be carried out by a known polymerization method such as emulsion polymerization, suspension polymerization and bulk polymerization.

In an embodiment, the aromatic vinyl monomer is at least one monomer selected from the group consisting of styrene,? -Methylstyrene,? -Methylstyrene, p-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dibromostyrene , Vinyl naphthalene and the like can be used. These may be used alone or in combination of two or more. The content of the aromatic vinyl-based monomer may be 20 to 90% by weight, for example, 30 to 80% by weight, based on 100% by weight of the total aromatic vinyl-based copolymer resin. The impact resistance and fluidity of the thermoplastic resin composition can be excellent in the above range.

In the specific examples, examples of the vinyl cyanide monomer include acrylonitrile, methacrylonitrile, ethacrylonitrile, phenyl acrylonitrile,? -Chloroacrylonitrile, and fumaronitrile. These may be used alone or in combination of two or more. For example, acrylonitrile, methacrylonitrile and the like can be used. The content of the vinyl cyanide monomer may be 10 to 80% by weight, for example, 20 to 70% by weight, based on 100% by weight of the total aromatic vinyl copolymer resin. The impact resistance and fluidity of the thermoplastic resin composition can be excellent in the above range.

In the specific examples, examples of the monomer for imparting the above processability and heat resistance include, but are not limited to, (meth) acrylic acid, maleic anhydride, N-substituted maleimide and the like. When the monomer for imparting processability and heat resistance is used, the content thereof may be 15% by weight or less, for example, 0.1 to 10% by weight, based on 100% by weight of the monomer mixture. Within the above range, the thermoplastic resin composition can be imparted with processability and heat resistance without deteriorating other physical properties.

In an embodiment, the aromatic vinyl-based copolymer resin may have a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 10,000 to 300,000 g / mol, for example, 15,000 to 150,000 g / mol. Within the above range, the thermoplastic resin composition may have excellent mechanical strength and moldability.

In an embodiment, the aromatic vinyl-based copolymer resin (A2) may include 40 to 90% by weight, for example, 50 to 80% by weight, of 100% by weight of the whole rubber-modified aromatic vinyl-based copolymer resin (A). Within the above range, the thermoplastic resin composition may have excellent impact resistance and moldability.

(B) an encapsulated polyphenylene sulfide resin

The encapsulated polyphenylene sulfide resin according to one embodiment of the present invention improves the flame retardance, heat resistance, compatibility, and the like of the thermoplastic resin composition. When the thermoplastic resin composition is processed, the polyphenylene sulfide resin causes odor generation, Or the like can be used, and it is possible to use a polyphenylene sulfide resin in which an aromatic vinyl resin crosslinked on the entire surface or a part of the surface of the polyphenylene sulfide resin is coated (encapsulated). For example, the encapsulated polyphenylene sulfide-based resin can be prepared by polymerizing a polyphenylene sulfide-based resin with a monomer mixture containing an aromatic vinyl monomer and a crosslinking agent. Here, the polymerization can be carried out by a known polymerization method such as emulsion polymerization, suspension polymerization, bulk polymerization and the like.

In an embodiment, the encapsulated polyphenylene sulfide-based resin comprises 40 to 85% by weight, for example, 50 to 75% by weight of the polyphenylene sulfide-based resin and 15 to 60% by weight of the crosslinked aromatic vinyl- For example from 25 to 50% by weight. Within the above range, the flame retardancy, heat resistance, impact resistance and the like of the thermoplastic resin composition can be excellent.

As specific examples of the polyphenylene sulfide resin, a conventional polyphenylene sulfide resin may be used. For example, a compound containing a repeating unit represented by the following formula (1) may be used.

[Chemical Formula 1]

If necessary, the polyphenylene sulfide resin may further contain, in addition to the repeating units represented by the above formula (1), further repeating units represented by the following formulas (2a) to (2h).

(2a)

(2b)

[Chemical Formula 2c]

(2d)

[Formula 2e]

(2f)

[Chemical Formula 2g]

[Chemical Formula 2h]

In the above formula (2h), R ₈ is a C 1 -C 10 alkylene group, a C 6 -C 12 arylene group, a C 1 -C 10 alkylene oxide group, -COO-, -CO- or -SO ₂ -.

In the specific examples, when the polyphenylene sulfide based resin contains the repeating units represented by the above formulas (2a) to (2h), the content thereof is less than 50 mol%, for example, 30 mol % ≪ / RTI > Within the above range, heat resistance and the like of the thermoplastic resin composition can be excellent.

In an embodiment, the polyphenylene sulfide-based resin may be divided into a linear molecular structure or a branched or cross-linked molecular structure according to the production method thereof. A typical production method of the branched or crosslinked polyphenylene sulfide resin is disclosed in Japanese Patent Laid-Open No. 45-3368, and a typical production method of the linear polyphenylene sulfide resin is disclosed in Japanese Patent Laid-Open No. 52-12240 . The present invention includes such patents as references.

In embodiments, the polyphenylene sulfide-based resin may have a specific gravity measured from 1.3 to 1.5, for example, from 1.35 to 1.45, according to ASTM D792. Within the above range, the flame retardancy and heat resistance of the thermoplastic resin composition can be excellent.

In an embodiment, the cross-linked aromatic vinyl resin may comprise from 40 to 99% by weight, for example, from 50 to 97% by weight of the aromatic vinyl monomer, not more than 55% by weight, such as not greater than 46% by weight of the vinyl cyanide monomer, 0.5 to 5% by weight, for example 1 to 4% by weight, of the polymer of the monomer mixture. Within the above range, the flame retardancy, heat resistance, compatibility and impact resistance of the thermoplastic resin composition can be excellent.

In an embodiment, the aromatic vinyl monomer is at least one monomer selected from the group consisting of styrene,? -Methylstyrene,? -Methylstyrene, p-methylstyrene, pt-butylstyrene, ethylstyrene, vinylxylene, monochlorostyrene, dibromostyrene , Vinyl naphthalene and the like can be used. These may be used alone or in combination of two or more.

In the specific examples, examples of the vinyl cyanide monomer include acrylonitrile, methacrylonitrile, ethacrylonitrile, phenyl acrylonitrile,? -Chloroacrylonitrile, and fumaronitrile. These may be used alone or in combination of two or more. For example, acrylonitrile, methacrylonitrile and the like can be used.

In an embodiment, the cross-linking agent may include ethylene glycol dimethacrylate, glycidyl (meth) acrylate, divinylbenzene, trimethylolpropane triacrylate, combinations thereof, and the like.

In embodiments, the encapsulated polyphenylene sulfide-based resin may be in the form of at least partially encapsulated (core-shell) particles, wherein at least one core (polyphenylene sulfide-based particle) (An aromatic vinyl-based resin). The average particle size of the encapsulated polyphenylene sulfide resin measured by a particle size analyzer may be 20 to 1,000 占 퐉, for example, 40 to 800 占 퐉. Within the above range, the thermoplastic resin composition may have excellent processability, compatibility, flame retardancy, and the like. In addition, the aspect ratio of the encapsulated polyphenylene sulfide resin may be 1: 1 to 1: 5, but is not limited thereto.

In an embodiment, the encapsulated polyphenylene sulfide resin may be contained in an amount of 100 to 200 parts by weight, for example, 110 to 190 parts by weight, based on 100 parts by weight of the rubber-modified aromatic vinyl copolymer resin. When the content of the encapsulated polyphenylene sulfide resin is less than 100 parts by weight based on 100 parts by weight of the rubber-modified aromatic vinyl copolymer resin, the flame retardancy, heat resistance and compatibility of the thermoplastic resin composition may be lowered If it exceeds 200 parts by weight, the impact resistance and processability of the thermoplastic resin composition may be lowered.

The thermoplastic resin composition according to one embodiment of the present invention may further include an additive contained in a conventional thermoplastic resin composition. Examples of the additives include flame retardants, fillers, antioxidants, anti-drop agents, lubricants, release agents, nucleating agents, stabilizers, pigments, dyes, and mixtures thereof. When the additive is used, the content thereof may be 0.001 to 40 parts by weight, for example, 0.1 to 10 parts by weight, based on 100 parts by weight of the thermoplastic resin.

The thermoplastic resin composition according to one embodiment of the present invention may be in the form of a pellet obtained by melt-extruding the above components at a temperature of 200 to 280 DEG C, for example 220 to 250 DEG C, using a conventional twin-screw extruder.

In a specific example, the thermoplastic resin composition may have a structure in which a dispersed phase containing a rubber-modified vinyl-based graft copolymer and an encapsulated polyphenylene sulfide resin is dispersed in a continuous phase containing an aromatic vinyl copolymer resin .

In a specific example, the thermoplastic resin composition may have a flame retardancy of V-1 or more of 2 mm thick specimen measured by UL-94 vertical test method.

In a specific example, the thermoplastic resin composition may have a Vicat softening temperature of 90 to 110 DEG C, for example, 95 to 105 DEG C measured under a load of 5 kg at 50 DEG C / hr according to ISO 306.

In an embodiment, the thermoplastic resin composition may have a notch Izod impact strength of 6 to 10 kgf · cm / cm, for example, 6 to 9 kgf · cm / cm, measured according to ASTM D256 have.

The molded article according to the present invention is formed from the thermoplastic resin composition. The thermoplastic resin composition may be produced in the form of pellets, and the produced pellets may be manufactured into various molded products through various molding methods such as injection molding, extrusion molding, vacuum molding, and casting molding. Such molding methods are well known to those of ordinary skill in the art to which the present invention pertains. The molded article is excellent in impact resistance, flame retardancy, heat resistance, fluidity and the like, and therefore is useful as an exterior material for electric / electronic products.

Hereinafter, the present invention will be described in more detail by way of examples, but these examples are for illustrative purposes only and should not be construed as limiting the present invention.

Example

Hereinafter, specifications of each component used in Examples and Comparative Examples are as follows.

(A) a rubber-modified aromatic vinyl-based copolymer resin

24% by weight of the rubber-modified vinyl-based graft copolymer (A1) and 76% by weight of the following (A2) aromatic vinyl-based copolymer resin were used.

(A1) a rubber-modified vinyl-based graft copolymer

G-ABS in which 55 wt% of styrene and acrylonitrile (weight ratio: 75/25) were graft-polymerized to 45 wt% of butadiene rubber (average particle size: 310 nm) was used.

(A2) an aromatic vinyl-based copolymer resin

SAN resin (weight average molecular weight: 130,000 g / mol) in which 75% by weight of styrene and 25% by weight of acrylonitrile were polymerized was used.

(B) an encapsulated polyphenylene sulfide resin

(B1) 50% by weight of a polyphenylene sulfide resin (manufacturer: TOSOH, product name: B-042, specific gravity: 1.35, particle shape: amorphous) and a monomer mixture (styrene and crosslinking agent (ethylene glycol dimethacrylate) / 3)) was mixed at 30 DEG C for 2 hours, mixed with water in which the dispersant and the electrolyte were dissolved, and suspended polymerized at 70 to 90 DEG C for 3 to 6 hours to prepare an encapsulated polyphenylene sulfide resin (Average particle size: 800 탆).

 (B2) 75 weight% of a polyphenylene sulfide resin (manufacturer: TOSOH, product name: B-042, specific gravity: 1.35, particle shape: amorphous) and a monomer mixture (styrene, acrylonitrile and crosslinking agent (ethylene glycol dimethacrylate) (Weight ratio: 82/15/3) were mixed at 30 DEG C for 2 hours, mixed with water in which the dispersant and the electrolyte were dissolved, and subjected to suspension polymerization at 70 to 90 DEG C for 3 to 6 hours to prepare an encapsulated Polyphenylene sulfide resin (average particle size: 50 mu m).

(C) polyphenylene sulfide resin (manufacturer: TOSOH, product name: B-042, specific gravity: 1.35, particle shape: amorphous) was used.

Example  1 to 6 and Comparative Example  1 to 3

The above components were added in the amounts shown in Table 1, and then extruded at 230 캜 to prepare pellets. The pellets were extruded at a temperature of 230 ° C. and a mold temperature of 60 ° C. in a 6 Oz extruder at 80 ° C. for 2 hours or more, . The properties of the prepared specimens were evaluated by the following methods, and the results are shown in Table 1 below.

How to measure property

(1) Evaluation of flame retardancy: The flame retardancy of a 2.0 mm thick specimen was measured by UL-94 vertical test method.

(2) Heat resistance evaluation: Vicat softening temperature (VST) (unit: ° C) was measured under a load of 5 kg and a temperature of 50 ° C / hr according to ISO 306.

(3) Evaluation of impact resistance: According to ASTM D256, the notched Izod impact strength (unit: kgf · cm / cm) of a 1/8 "thick specimen was measured.

Example Comparative Example One 2 3 4 5 6 One 2 3 (A) (parts by weight) 100 100 100 100 100 100 100 100 100 (B1) (parts by weight) 185 110 190 - - - - 90 210 (B2) (parts by weight) - - - 185 110 190 - - - (C) (parts by weight) - - - - - - 185 - - Flammability (2 mm) V1 V1 V1 V0 V1 V0 V2 V2 V1 VST (캜) 97 97 98 97 97 100 97 96 100 Notched Izod strength (kgf · cm / cm) 7 8 7 7 8 7 7 7 5

From the above results, it can be seen that the thermoplastic resin composition of the present invention is excellent in flame retardancy, heat resistance and impact resistance.

On the other hand, in Comparative Example 1 using a polyphenylene sulfide resin instead of the encapsulated polyphenylene sulfide resin of the present invention, flame retardancy and the like were lowered. In Comparative Example 2 in which a small amount of the encapsulated polyphenylene sulfide resin (B1) was applied, it was found that the flame retardancy and the like were lowered. In Comparative Example 3, which was applied in an excess amount, the impact resistance was lowered.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (14)

100 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; And
100 to 200 parts by weight of an encapsulated polyphenylene sulfide resin,
The encapsulated polyphenylene sulfide-based resin is a polyphenylene sulfide-based resin coated on the entire surface or a part of the polyphenylene sulfide-based resin with an aromatic vinyl resin bridged,
Wherein the crosslinked aromatic vinyl resin is a polymer of a monomer mixture comprising an aromatic vinyl monomer and a crosslinking agent.
The thermoplastic resin composition according to claim 1, wherein the rubber-modified aromatic vinyl-based copolymer resin comprises a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin.
The thermoplastic resin composition according to claim 2, wherein the rubber-modified vinyl-based graft copolymer is obtained by graft-polymerizing a monomer mixture comprising an aromatic vinyl monomer and a vinyl cyan monomer in a rubbery polymer.
The thermoplastic resin composition according to claim 2, wherein the aromatic vinyl-based copolymer resin is a polymer of a monomer mixture comprising an aromatic vinyl-based monomer and a vinyl cyanide-based monomer.
The thermoplastic resin composition according to claim 1, wherein the encapsulated polyphenylene sulfide resin comprises 40 to 85% by weight of the polyphenylene sulfide resin and 15 to 60% by weight of the crosslinked aromatic vinyl resin. Composition.
The thermoplastic resin composition according to claim 1, wherein the polyphenylene sulfide resin has a specific gravity of 1.3 to 1.5.
The crosslinked aromatic vinyl resin according to claim 1, wherein the crosslinked aromatic vinyl resin is a polymer of a monomer mixture comprising 40 to 99% by weight of an aromatic vinyl monomer, 55% by weight or less of a vinyl cyan monomer, and 0.5 to 5% By weight of the thermoplastic resin composition.
The thermoplastic resin composition according to claim 1, wherein the crosslinking agent comprises at least one of ethylene glycol dimethacrylate, glycidyl (meth) acrylate, divinylbenzene, and trimethylolpropane triacrylate .
The thermoplastic resin composition according to claim 1, wherein the average particle size of the encapsulated polyphenylene sulfide resin is 20 to 1,000 탆.
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a flame retardancy of not less than V-1 of a 2 mm thick specimen measured by a UL-94 vertical test method.
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a Vicat softening temperature of 90 to 110 DEG C measured under a load of 5 kg at 50 DEG C / hr according to ISO 306. [
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a notched Izod impact strength of 6 to 10 kgf · cm / cm in a 1/8 "thick specimen measured according to ASTM D256.
The thermoplastic resin composition according to claim 2, wherein the thermoplastic resin composition has a structure in which a dispersed phase containing a rubber-modified vinyl-based graft copolymer and an encapsulated polyphenylene sulfide resin is dispersed in a continuous phase containing an aromatic vinyl- Wherein the thermoplastic resin composition is a thermoplastic resin composition.
A molded article formed from the thermoplastic resin composition according to any one of claims 1 to 13.