Polyphenylene sulfide resin composition for laser welding and molded article

Abstract

Disclosed herein are a polyphenylene sulfide resin composition for laser welding and a molded article. The disclosed polyphenylene sulfide resin composition for laser welding comprises: 100 parts by weight of a first polyphenylene sulfide resin having a metal cation as a terminal functional group; and 30-70 parts by weight of a second polyphenylene sulfide resin having H+ as a terminal functional group.

Description

Polyphenylene sulfide resin composition for laser welding and molded article

[0001] A polyphenylene sulfide resin composition and a molded article for laser welding are disclosed. More specifically, a polyphenylene sulfide resin composition and a molded article for laser welding are disclosed, which can provide a molded article having excellent strength, internal anti-freeze properties, and laser transmittance.

[0002] Due to stricter environmental regulations, the use of lightweight engineering plastics with excellent mechanical strength is expanding in the automotive industry to replace traditional heavy metals.

[0003] There are various methods for fastening automotive parts using engineering plastics. Using adhesives is time-consuming and costly, and causes environmental problems due to the use of hazardous chemicals. Screw fastening methods are unsuitable for complying with environmental regulations because the increased number of automotive parts leads to increased weight and thus higher greenhouse gas emissions. Ultrasonic welding, spin welding, and vibration welding are limited by the shape and size of the joined objects, and present issues such as insufficient bonding strength and an inability to control product appearance; additionally, they can cause product damage due to heat and vibration.

[0004] On the other hand, the laser welding method is a method of joining two base materials having different transmittance and absorption properties by irradiating them with a laser beam, and can resolve issues such as leakage, contamination, damage, and low bonding strength that occur during welding.

[0005] Polyphenylene sulfide (PPS) resin, a type of engineering plastic, is increasingly being utilized in automotive parts due to its excellent mechanical strength, heat resistance, flame retardancy, chemical resistance, and dimensional stability. Specifically, PPS resin is used in various control units, sensors, ignition coils, housings, connectors, and engine and water circulation system components. However, PPS presents a problem in that it has lower laser transmittance for laser welding compared to other engineering plastics. In particular, excellent Long Life Coolant (LLC) properties are required when used for applications related to water circulation system components.

[0006] One embodiment of the present invention provides a polyphenylene sulfide resin composition for laser welding that can provide a molded article with excellent strength, internal liquid resistance, and laser transmittance.

[0007] Another embodiment of the present invention provides a molded article manufactured from the above-described polyphenylene sulfide resin composition for laser welding.

[0008] One aspect of the present invention is,

[0009] 100 parts by weight of a first polyphenylene sulfide resin having a terminal functional group that is a metal cation; and

[0010] The terminal functional group is H + A polyphenylene sulfide resin composition comprising 30 to 70 parts by weight of a second polyphenylene sulfide resin is provided.

[0011] The above metal cation is Na + , Ca 2+ , Mg 2+ , Or it may include a combination of these.

[0012] The above polyphenylene sulfide resin composition may further include 80 to 120 parts by weight of glass fiber per 100 parts by weight of the first polyphenylene sulfide resin.

[0013] The above glass fiber may have a diameter of 10 to 17 μm.

[0014] The above polyphenylene sulfide resin composition may further include 0.3 to 15 parts by weight of a silane coupling agent per 100 parts by weight of the first polyphenylene sulfide resin.

[0015] The above silane coupling agent may include an epoxy group, an isocyanate group, an amino group, a vinyl group, an acrylic group, a mercapto group, or a combination thereof.

[0016] The above polyphenylene sulfide resin composition may further include 0.3 to 15 parts by weight of an antioxidant per 100 parts by weight of the first polyphenylene sulfide resin.

[0017] Another aspect of the present invention is,

[0018] A molded article manufactured from the above polyphenylene sulfide resin composition is provided.

[0019] The above molded product may have a tensile strength retention rate of 70% or more after antifreeze aging under conditions of 120°C and 3000hr, and a laser transmittance of 7% or more under conditions of a thickness of 1mm and a wavelength of 980nm.

[0020] A polyphenylene sulfide resin composition according to one embodiment of the present invention can provide a molded article having excellent strength, internal liquid resistance, and laser transmittance.

[0021] Hereinafter, a polyphenylene sulfide resin composition according to one embodiment of the present invention will be described in detail.

[0022] A polyphenylene sulfide resin composition according to one embodiment of the present invention comprises 100 parts by weight of a first polyphenylene sulfide resin having a terminal functional group which is a metal cation and a terminal functional group which is H +It contains 30 to 70 parts by weight of a second polyphenylene sulfide resin. If the content of the first polyphenylene sulfide resin and the second polyphenylene sulfide resin are each within the above ranges, a polyphenylene sulfide resin composition can be obtained that provides a molded article with excellent strength, internal liquid resistance, and laser transmittance. For example, the content of the second polyphenylene sulfide resin may be 40 to 60 parts by weight per 100 parts by weight of the first polyphenylene sulfide resin.

[0023] The first polyphenylene sulfide resin and the second polyphenylene sulfide resin can each be manufactured using a McCallum process in which p-dichlorobenzene and sodium sulfide are polymerized in a polar organic solvent such as N-methylpyrrolidone. The type of terminal functional group of the polyphenylene sulfide resin manufactured via the McCallum method is determined by the type of additive used in the washing step after polymerization. The first polyphenylene sulfide resin, in which the terminal functional group is a metal cation, has Mg 2+ It can be obtained by washing with an organic acid containing, and the terminal functional group is H + The polyphenylene sulfide resin can be obtained by washing with an organic acid that does not contain metal salts.

[0024] The type of terminal functional group of each of the first polyphenylene sulfide resin and the second polyphenylene sulfide resin can be confirmed by reacting the prepared polyphenylene sulfide resin in a high-temperature electric furnace for a sufficient amount of time to gasify and remove all organic matter, and then analyzing the remaining metal salt using an ICP analyzer.

[0025] The above metal cation is Na + , Ca 2+ , Mg 2+ , Or it may include a combination of these.

[0026] In addition, the polyphenylene sulfide resin composition may further include 80 to 120 parts by weight of glass fiber per 100 parts by weight of the first polyphenylene sulfide resin. If the content of the glass fiber is within the above range, a polyphenylene sulfide resin composition capable of providing a molded article with excellent strength, antifreeze properties, and laser transmittance can be obtained. For example, the content of the glass fiber may be 90 to 110 parts by weight per 100 parts by weight of the first polyphenylene sulfide resin. In particular, the glass fiber plays a role in improving the mechanical strength of the molded article manufactured from the polyphenylene sulfide resin composition.

[0027] The above glass fiber may have a diameter of 10 to 17 μm.

[0028] In addition, the polyphenylene sulfide resin composition may further include 0.3 to 15 parts by weight of a silane coupling agent per 100 parts by weight of the first polyphenylene sulfide resin. If the content of the silane coupling agent is within the above range, a polyphenylene sulfide resin composition capable of providing a molded article with excellent strength, anti-freeze properties, and laser transmittance can be obtained. In particular, the silane coupling agent plays a role in improving mechanical strength and anti-freeze properties by strengthening the interfacial bonding force between the first and second polyphenylene sulfide resins and the glass fiber.

[0029] The above silane coupling agent may include an epoxy group, an isocyanate group, an amino group, a vinyl group, an acrylic group, a mercapto group, or a combination thereof.

[0030] The above silane coupling agents are 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-isocyanatepropyltrimethoxysilane, 3-isocyanatepropyltriethoxysilane, tris-[3-(trimethoxysilyl)propyl]isocyanurate, 3-aminopropyltriethoxysilane, bis[(3-triethoxysilyl)propyl]amine, 3-aminopropyltrimethoxysilane, bis[(3-trimethoxysilyl)propyl]amine, 3-aminopropylmethyldiethoxysilane, 3-aminopropylmethyldimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, It may include vinyltris(2-methoxyethoxy)silane, vinyltrisisopropoxysilane, vinyltris(isopropenyloxy)silane, acrylsilane, methacrylsilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropylmethyldimethoxysilane, or a combination thereof.

[0031] In addition, the polyphenylene sulfide resin composition may further include 0.3 to 15 parts by weight of an antioxidant per 100 parts by weight of the first polyphenylene sulfide resin. If the content of the antioxidant is within the above range, a polyphenylene sulfide resin composition can be obtained that provides a molded article with excellent strength, internal liquid resistance, and laser transmittance. In particular, the antioxidant plays a role in preventing oxidation of the polyphenylene sulfide resin composition and the molded article, thereby suppressing a decrease in laser transmittance.

[0032] The above antioxidant may include hindered phenolic antioxidants, phosphorus-based antioxidants, sulfate-based antioxidants, thioether-based antioxidants, or a combination thereof.

[0033] The above hindered phenolic antioxidants are 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 1,6-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamido]hexane, and 1,6-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamido]propane. It may include tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane or a combination thereof.

[0034] The above phosphorus-based antioxidant may include bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol-di-phosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol-di-phosphite, or a combination thereof.

[0035] The above thioether-based antioxidant may include tetrakis[methane-3-(laurylthio)propionate]methane, distearyl thiodipropionate, dilauryl thiodipropionate, or a combination thereof.

[0036] Hereinafter, a method for manufacturing a polyphenylene sulfide resin composition according to one embodiment of the present invention will be described in detail.

[0037] A method for preparing a polyphenylene sulfide resin composition according to one embodiment of the present invention comprises a first polyphenylene sulfide resin having a terminal functional group which is a metal cation, and a polyphenylene sulfide resin having a terminal functional group which is H + The method includes the step (S10) of forming a mixture by mixing a second polyphenylene sulfide resin, glass fiber, a silane coupling agent and / or an antioxidant, and the step (S20) of melting and kneading the mixture using a twin-screw extruder at a temperature that is at least 10°C or 20°C higher than the higher of the melting point of the first polyphenylene sulfide resin and the melting point of the second polyphenylene sulfide resin, and at least 100°C or 50°C higher.

[0038] It is preferable to feed the above glass fibers into the side feeder of a twin-screw extruder in terms of dispersibility and mechanical strength.

[0039] The method for manufacturing the above polyphenylene sulfide resin composition may further include a step (S30) of manufacturing the polyphenylene sulfide resin composition, which has undergone melt mixing in step (S20), into a pellet form using a pelletizer.

[0040] Another aspect of the present invention provides a molded article made from the polyphenylene sulfide resin composition.

[0041] The above molded product may have a tensile strength retention rate (i.e., internal antifreeze properties) of 70% or more after antifreeze aging under conditions of 120°C and 3000hr, and a laser transmittance of 7% or more under conditions of a thickness of 1mm and a wavelength of 980nm.

[0042] Hereinafter, a method for manufacturing a molded article according to one embodiment of the present invention will be described in detail.

[0043] A method for manufacturing a molded article according to one embodiment of the present invention includes a step (S40) of injection molding a polyphenylene sulfide resin composition prepared in the form of pellets in step (S30).

[0044] In the case of injection molding in the above step (S40), various molding conditions are not particularly limited and can be performed in a conventional manner. For example, the polyphenylene sulfide resin composition prepared in the form of pellets in an injection molding machine may be melted at a temperature that is at least 10°C or 20°C higher than the higher melting point between the melting point of the first polyphenylene sulfide resin and the melting point of the second polyphenylene sulfide resin, and at a temperature not higher than at least 100°C or 50°C, and then the molten material may be injected into a mold to be molded. At this time, the mold temperature is not particularly limited, but may be set to 100~200°C or 130~150°C.

[0045] The thickness of the above-mentioned molded product may be 0.5 to 3 mm or 0.8 to 1.5 mm. If the thickness of the above-mentioned molded product is less than 0.5 mm, warping may occur during the cooling process after molding, and if the thickness of the above-mentioned molded product exceeds 3 mm, it may have an adverse effect on laser transmittance.

[0046] The present invention will be explained in more detail below through examples. These examples are intended to explain the invention more specifically, and the scope of the invention is not limited to these examples.

[0047] Example 1: Preparation of polyphenylene sulfide resin composition and pellets

[0048] First, the terminal functional group is Mg 2+ 100 parts by weight of polyphenylene sulfide resin (PPS1) (MFR 95 g / 10 min, 315℃, 5 kg), terminal functional group H +A polyphenylene sulfide resin composition was prepared by blending 50 parts by weight of polyphenylene sulfide resin (PPS2) (MFR 280 g / 10 min, 315°C, 5 kg), 100 parts by weight of glass fiber (average diameter 10.5 μm), 1.5 parts by weight of a silane coupling agent (3-Glycidoxypropyl methyldimethoxysilane), and 1.5 parts by weight of an antioxidant (Bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol-di-phosphite). Subsequently, the polyphenylene sulfide resin composition was fed into a twin-screw extruder and melt-kneaded at a temperature of 290–340°C, after which the extruded strand was cooled and cut to obtain pellets.

[0049] Example 2: Preparation of polyphenylene sulfide resin composition and pellets

[0050] The terminal functional group is H + A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 30 parts by weight.

[0051] Example 3: Preparation of polyphenylene sulfide resin composition and pellets

[0052] The terminal functional group is H + A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 70 parts by weight.

[0053] Example 4: Preparation of polyphenylene sulfide resin composition and pellets

[0054] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the glass fiber content was changed from 100 parts by weight to 80 parts by weight.

[0055] Example 5: Preparation of polyphenylene sulfide resin composition and pellets

[0056] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the glass fiber content was changed from 100 parts by weight to 120 parts by weight.

[0057] Example 6: Preparation of polyphenylene sulfide resin composition and pellets

[0058] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the silane coupling agent was changed from 1.5 parts by weight to 0.3 parts by weight.

[0059] Example 7: Preparation of polyphenylene sulfide resin composition and pellets

[0060] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the silane coupling agent was changed from 1.5 parts by weight to 15 parts by weight.

[0061] Example 8: Preparation of polyphenylene sulfide resin composition and pellets

[0062] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the antioxidant was changed from 1.5 parts by weight to 0.3 parts by weight.

[0063] Example 9: Preparation of polyphenylene sulfide resin composition and pellets

[0064] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the antioxidant was changed from 1.5 parts by weight to 15 parts by weight.

[0065] Reference Example 1: Preparation of polyphenylene sulfide resin composition and pellets

[0066] The terminal functional group is H +A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 10 parts by weight.

[0067] Reference Example 2: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0068] The terminal functional group is H + A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 90 parts by weight.

[0069] Reference Example 3: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0070] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the glass fiber content was changed from 100 parts by weight to 70 parts by weight.

[0071] Reference Example 4: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0072] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the glass fiber content was changed from 100 parts by weight to 130 parts by weight.

[0073] Reference Example 5: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0074] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the silane coupling agent was changed from 1.5 parts by weight to 0.1 parts by weight.

[0075] Reference Example 6: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0076] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the silane coupling agent was changed from 1.5 parts by weight to 20 parts by weight.

[0077] Reference Example 7: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0078] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the antioxidant was changed from 1.5 parts by weight to 0.1 parts by weight.

[0079] Reference Example 8: Preparation of Polyphenylene Sulfide Resin Composition and Pellet

[0080] A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the antioxidant was changed from 1.5 parts by weight to 20 parts by weight.

[0081] Comparative Example 1: Preparation of polyphenylene sulfide resin composition and pellets

[0082] The terminal functional group is Mg 2+ The content of the secondary polyphenylene sulfide resin was changed from 100 parts by weight to 0 parts by weight, and the terminal functional group H + A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 150 parts by weight.

[0083] Comparative Example 2: Preparation of polyphenylene sulfide resin composition and pellets

[0084] The terminal functional group is Mg 2+ The content of the secondary polyphenylene sulfide resin was changed from 100 parts by weight to 150 parts by weight, and the terminal functional group was H + A polyphenylene sulfide resin composition and pellets were prepared in the same manner as in Example 1, except that the content of the second polyphenylene sulfide resin was changed from 50 parts by weight to 0 parts by weight.

[0085] The types of components and the content of each component of the polyphenylene sulfide resin compositions of Examples 1 to 9, Reference Examples 1 to 8, and Comparative Examples 1 to 2 are summarized in Table 1 below.

[0086] PPS 1 (parts by weight) PPS 2 (parts by weight) Glass fiber (parts by weight) Silane coupling agent (parts by weight) Antioxidant (parts by weight) Example 1 100501001.51.5 Example 2 100301001.51.5 Example 3 100701001.51.5 Example 4 10050801.51.5 Example 5 100501201.51.5 Example 6 100501000.31.5 Example 7 10050100151.5 Example 8 100501001.50,3 Example 9 100501001.515 Reference Example 1 100101001.51.5 Reference Example 2100901001.51.5 Reference Example 310050701.51.5 Reference Example 4100501301.51.5 Reference Example 5100501000.11.5 Reference Example 610050100201.5 Reference Example 7100501001.50.1 Reference Example 8100501001.520 Comparative Example 101501001.51.5 Comparative Example 215001001.51.5

[0087]

[0088] Evaluation Example: Evaluation of physical properties of molded articles prepared from polyphenylene sulfide resin compositions. The physical properties of molded articles prepared from each polyphenylene sulfide resin composition prepared in Examples 1 to 9, Reference Examples 1 to 8, and Comparative Examples 1 to 2 were evaluated in the following manner, and the results are shown in Table 2 below.

[0089] (1) Tensile strength and tensile elongation

[0090] The pellets obtained through the above extrusion molding were fed into a Sumitomo injection molding machine to produce dumbbell-shaped test specimens according to ISO 527 standards under conditions of a cylinder temperature of 320°C and a mold temperature of 130°C. The tensile strength and tensile elongation of the produced test specimens were evaluated using an Instron UTM machine at a speed of 5 mm / min.

[0091] (2) Flexural strength

[0092] A dumbbell-shaped test specimen of ISO 527 standard manufactured in (1) above was processed using a test specimen processing machine to produce a square test specimen of ISO 178 standard. The flexural strength of the square test specimen of ISO 178 standard produced above was evaluated at a speed of 2 mm / min using an Instron UTM machine.

[0093] (3) Charpy impact strength

[0094] The dumbbell-shaped test specimen of ISO 527 manufactured in (1) above was processed using a test specimen processing machine to produce a notched square test specimen of ISO 179. The Charpy impact strength of the notched square test specimen of ISO 179 produced above was evaluated using a Charpy impact strength tester, and the evaluation was performed after mounting a 2J hammer on the Charpy impact strength tester.

[0095] (4) Internal fluid characteristics

[0096] The evaluation of internal antifreeze properties was performed using the ISO 527 standard test specimen prepared in (1) above. A solution (antifreeze) was prepared by mixing water and ethylene glycol in a weight ratio of 1:1, and then the solution was filled into a pressure vessel. The test specimen was immersed in the solution filled into the pressure vessel, and the pressure vessel was placed in a hot air dryer and heat-treated at 120°C for 500 hours and 3000 hours. Afterward, the tensile strength was measured in the same manner as the tensile strength in (1) above. Subsequently, the internal antifreeze properties (i.e., tensile strength retention rate) were calculated according to the following mathematical formula 1.

[0097] [Mathematical Formula 1]

[0098] Internal Antifreeze Properties (%) = (Tensile Strength of Specimen After Internal Antifreeze Properties Test) / (Tensile Strength of Specimen Before Internal Antifreeze Properties Test) × 100

[0099] (5) Laser transmittance

[0100] A square test specimen of 80 mm × 80 mm × 1 mm was manufactured using a Sumitomo injection molding machine with the pellets obtained through the above extrusion molding under conditions of a cylinder temperature of 320°C and a mold temperature of 130°C. The laser transmittance of the test specimen was measured by irradiating the test specimen with a laser beam having a wavelength of 980 nm using an EVlaser laser transmittance meter.

[0101] Tensile Strength (MPa) Tensile Elongation (%) Flexural Strength (MPa) Charpy Impact Strength (kJ / m²) 2 ) Internal Antifreeze Characteristics (%) Laser Transmittance (%) 500hr 3000hr Example 1 20 22.0 289 10.9 837 37.9 Example 2 20 42.0 291 11.1 79 708.1 Example 3 18 92.0 276 10.2 847 58.8 Example 4 18 42.1 27 39.5 827 39.3 Example 5 20 01.9 288 11.0 80 727.7 Example 6 20 12.0 288 10.8 79 718.4 Example 7 20 01.9 290 10.7 857 57.1 Example 8 20 22.0 291 10.7 81 717.5 Example 92002.028910.881728.2 Reference Example 11972.027910.075636.1 Reference Example 21812.026610.080697.7 Reference Example 31792.02628.477669.1 Reference Example 41901.82759.875646.2 Reference Example 51851.82699.873618.2 Reference Example 61921.928010.280696.3 Reference Example 71961.928510.278656.3 Reference Example 81931.828110.076667.9 Comparative Example 11861.927110.571586.5 Comparative Example 21901.927410.369557.3

[0102]

[0103] Referring to Tables 2 and 3 above, the molded articles produced from the polyphenylene sulfide resin compositions prepared in Examples 1 to 9 were found to have excellent tensile strength, tensile elongation, flexural strength, Charpy impact strength, internal liquid resistance (70% or more), and laser transmittance (7% or more). However, compared to the molded articles produced from the polyphenylene sulfide resin compositions prepared in Reference Examples 1 to 8 and Comparative Examples 1 to 2, at least one of the tensile strength, tensile elongation, flexural strength, Charpy impact strength, internal liquid resistance, and laser transmittance was found to be inferior.

[0104] In addition, the molded article prepared from the polyphenylene sulfide resin composition prepared in Reference Examples 1 to 8 was found to have superior internal liquid resistance compared to the molded article prepared from the polyphenylene sulfide resin composition prepared in Comparative Examples 1 to 2.

[0105] The present invention has been described with reference to embodiments, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. 100 parts by weight of a first polyphenylene sulfide resin having a terminal functional group that is a metal cation; and The terminal functional group is H + A polyphenylene sulfide resin composition comprising 30 to 70 parts by weight of a second polyphenylene sulfide resin.

2. In Paragraph 1, The above metal cation is Na + , Ca 2+ , Mg 2+ , A polyphenylene sulfide resin composition comprising a combination thereof.

3. In Paragraph 1, A polyphenylene sulfide resin composition further comprising 80 to 120 parts by weight of glass fiber per 100 parts by weight of the first polyphenylene sulfide resin.

4. In Paragraph 3, The above glass fiber is a polyphenylene sulfide resin composition having a diameter of 10 to 17 μm.

5. In Paragraph 1, A polyphenylene sulfide resin composition further comprising 0.3 to 15 parts by weight of a silane coupling agent per 100 parts by weight of the first polyphenylene sulfide resin.

6. In Paragraph 5, The above silane coupling agent is a polyphenylene sulfide resin composition comprising an epoxy group, an isocyanate group, an amino group, a vinyl group, an acrylic group, a mercapto group, or a combination thereof.

7. In Paragraph 1, A polyphenylene sulfide resin composition further comprising 0.3 to 15 parts by weight of an antioxidant per 100 parts by weight of the first polyphenylene sulfide resin.

8. A molded article produced from a polyphenylene sulfide resin composition according to any one of claims 1 to 7.

9. In Paragraph 8, A molded article having a tensile strength retention rate of 70% or more after antifreeze aging under conditions of 120℃ and 3000hr, and a laser transmittance of 7% or more under conditions of a molded article thickness of 1mm and a wavelength of 980nm.