KR20150054036A - Halogen-free flame-retardant polyester resin composition having high fluidity and surface gloss and molded article thereof - Google Patents

Abstract

The present invention relates to a halogen-free flame retardant polyester resin composition, having high fluidity and surface gloss, and a molded article thereof and, more specifically, a halogen-free flame retardant polyester resin composition, which comprises polyester resin, phosphorous-based flame retardant, nitrogen based flame retardant, inorganic fillers and polysioxane-polycarbonate copolymers in a certain ratio and accordingly improves flame retardant of thin films without using halogen and antimony and has flame retardant, mechanical property, heat resistance dimensional stability, workability and moldability whose level is better or the same as a halogen based flame retardant polyester resin composition while having outstanding surface gloss and stable fluidity, and a molded article thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a halogen-free flame-retardant polyester resin composition having excellent fluidity and surface gloss, and a molded article thereof having a high fluidity and surface gloss and molded article,

More particularly, the present invention relates to a non-halogen flame-retardant polyester resin composition having excellent flowability and surface gloss, and a molded article thereof. More particularly, the present invention relates to a polyester resin, a phosphorus flame retardant, a nitrogen- The flame retardancy of a thin film is basically realized without using halogen and antimony materials, and compared with the halogen-based flame retardant polyester resin composition, flame retardancy, mechanical properties, heat resistance, dimensional stability, workability, moldability And particularly relates to a halogen-free flame-retardant polyester resin composition and a molded article thereof exhibiting remarkably excellent surface gloss and stable flow characteristics.

In general, polyester resins are excellent in mechanical / electrical properties and physical / chemical properties and are applied to a wide range of fields such as automobiles, electric / electronic devices and office equipment. When an inorganic filler such as glass fiber, talc, mica, or layered silicate is added to a polyester resin, the mechanical properties such as tensile strength and flexural strength and heat resistance are greatly improved and can be applied to various applications. However, many applications require mechanical properties and heat resistance as well as flame retardance, and various methods for imparting flame retardancy to polyester resins have been developed.

The polyester resin has a good flame-retardant property, and therefore flame retardancy has been imparted by a method in which an organic halogen flame retardant or an auxiliary flame retardant is separately added in a field requiring flame retardancy. However, in recent years, there have been various regulations regarding the use of halogen-based flame retardants in the environment. For example, in some European countries, polybrominated biphenyl (PBB) And polybrominated diphenylether (PBDE) as a flame retardant. In addition, there has been an attempt to strictly restrict the use of harmful heavy metals, a part of a brominated flame retardant, antimony compounds, etc., due to environmental safety evaluation in automobiles and electric / electronic parts.

Accordingly, various studies have been conducted using non-halogen flame retardants such as phosphinate, melamine cyanurate and melamine phosphonate, and flame retardant adjuvants, and a conventional polyester resin composition market which adds flame retardancy by using a halogen flame retardant Halogen-based flame retardants and flame-retardant adjuvants depending on the characteristics of the final product.

However, the performance level realized by the non-halogen flame retardant polyester composition is far lower than the excellent flame retardancy, mechanical properties, and heat resistance in the thin film implemented by the polyester composition developed using the halogen flame retardant agent. Based flame retardant system that can completely replace the flame retardancy and mechanical properties of the flame retardant system has not been developed. In addition, there is a considerable shortage in molding stability and productivity which must be exhibited in a mass production system after development, and therefore, there is a great difficulty in replacing the conventional halogen-based flame retardant polyester resin composition.

Therefore, it is still necessary to utilize the existing halogen-based flame retardant system for the production of molded articles suitable for use in important parts requiring long-term use in a high-temperature environment, use in a place where fire is likely to occur, A polyester resin composition is continuously used.

In addition, among the various applications in which the flame retardant polyester composition is used, one of its characteristics is a built-in connector of a home appliance such as a mobile phone charger terminal. Since the terminals of mobile phone chargers and built-in connectors of household appliances generate high temperature heat, very good flame retardancy and high temperature stability are required. Most connectors are made up of a female with a slot and have weak characteristics that eventually break if the connection is repeated 1000 times or more. In addition, when the continuous injection is performed, the temperature of the mold is increased, and as a result, the flowability of the resin is increased, resulting in a problem of unforming and a burr phenomenon at the time of injection. Because of such a problem, it is essential that the resin composition for molding a connector has a high level of flow characteristics and processability, and at the same time, it is indispensably required to maintain high long-term heat resistance and flame retardancy in a use environment in which the composition is repeatedly driven at high temperature and high temperature for a long time. Stable fluidity is required. Crystalline materials such as polyester resins generally have a high flowability when they are melted at a certain temperature or higher and have a very high flowability. However, even at a small temperature difference, they rapidly solidify or crystallize, and a change in flow characteristics due to such recrystallization mechanisms Which causes problems in the surface properties and molding processability of the molded article and causes non-uniformity of flow. Therefore, stable flow characteristics together with many of the characteristics listed above are very important factors. In order to simultaneously realize such high heat resistance and mechanical properties, flame retardancy and processability, a polyester resin composition using a conventional halogen-based flame retardant is still widely used for a mobile phone terminal and an internal connector of a home appliance.

Korean Patent Laid-Open Publication No. 10-2010-0118374 discloses a non-halogen flame retardant polyester composition prepared by adding a phosphorus flame retardant to a polyester resin, a nitrogen-based flame retardant as an auxiliary flame retardant, a silicate of a layered structure, and 30 wt% have. However, this composition has remarkably poor mechanical properties, and has difficulty in realizing thin film flame retardancy characteristics of 1.6 mm or less, and also has a problem in flame retardancy.

Korean Patent Laid-Open Publication No. 10-2009-0030505 discloses a non-halogen flame retardant polyester composition having improved flame retardancy. However, the composition contains more flame retardant than conventional flame retardant compositions, and as a result, the mechanical properties and heat resistance are deteriorated And a large amount of flame retardant may cause a large amount of gas to be generated, which affects the appearance characteristics. Also, heat retention characteristics and flow stability of the material may be adversely affected.

Accordingly, it is possible to realize an excellent flame retardancy in accordance with the weight reduction and miniaturization of the product, to secure mechanical properties equal to or higher than those of conventional halogen-free flame retardant polyester compositions without increasing the amount of inorganic substances, Development of a non-halogen flame retardant polyester resin composition having good surface gloss has been demanded.

Disclosure of the Invention The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide a flame retardant polyester resin composition which basically realizes thin film flame retardancy without using halogen and antimony materials, Halogenated flame-retardant polyester resin composition exhibiting excellent physical properties, heat resistance, dimensional stability, processability, moldability and the like, and having remarkably excellent surface gloss and stable flow characteristics, and a molded article thereof.

In order to achieve the above object, the present invention provides a polyester resin composition comprising 25 to 55% by weight of a polyester resin based on the total weight of the composition; 11 to 16% by weight phosphorylated flame retardant; 3 to 7% by weight of a nitrogen-based flame retardant; 15 to 45% by weight of an inorganic filler; And 5 to 15% by weight of a polysiloxane-polycarbonate copolymer.

According to another aspect of the present invention, there is provided a molded article characterized by being produced by processing the non-halogenated flame retardant polyester resin composition of the present invention.

The flame-retardant polyester resin composition of the present invention can realize excellent surface gloss and stable flow characteristics during injection molding without containing a halogen-based substance, realize high flame retardancy at various thicknesses, It is possible to maintain excellent mechanical properties, heat resistance, surface quality, workability, moldability and the like at a level or higher than that of the halogen-based flame-retardant polyester material. Accordingly, the molded article produced from the halogen-free flame-retardant polyester resin composition of the present invention can be applied to various applications such as automobiles, electric / electronic parts, and office equipment, in place of the conventional halogen-based flame retardant polyester resin composition, And connector parts which are major components in various OA devices and the like.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with respect to each element.

(A) a polyester resin

The polyester resin contained in the composition of the present invention is a resin which is generally excellent in mechanical / electrical properties and physical / chemical properties as a main component of the composition of the present invention.

In the present invention, a polyester resin selected from a polyethylene terephthalate resin, a polypropylene terephthalate resin, a polybutylene terephthalate resin and a mixture thereof may be used, but is not limited thereto. Preferably, a polybutylene terephthalate resin which is excellent in heat resistance, chemical resistance, electrical properties, mechanical strength and molding processability and is economically advantageous is used.

In terms of processability and mechanical properties, the intrinsic viscosity (IV) of the polyester resin at 25 캜 is preferably 0.8 to 1.5 dl / g.

The resin composition of the present invention contains 25 to 55% by weight, more preferably 40 to 50% by weight, based on the total weight of the composition, of the polyester resin. If the content of the polyester resin in the composition is less than 25% by weight, the amount of the polyester resin relative to the flame retardant and the inorganic filler is relatively decreased, so that the processing efficiency is lowered during the injection and extrusion, And the probability that the glossiness is lowered is increased. On the contrary, when the content of the polyester resin in the composition exceeds 55% by weight, the solidification rate is slowed down, the productivity is decreased, dimensional instability due to post-warpage is relatively large, and an excessive amount of flame retardant Lt; / RTI >

According to one embodiment of the present invention, the polyester resin may be one prepared by condensation polymerization of at least one dicarboxylic acid compound and at least one glycol compound. Preferably, the dicarboxylic acid compound may be an aromatic, aliphatic or alicyclic dicarboxylic acid, and the glycol compound may be an aliphatic or alicyclic glycol. More preferably, the aromatic dicarboxylic acid is an aromatic dicarboxylic acid having 6 to 20 carbon atoms, and the aliphatic or alicyclic dicarboxylic acid is an aliphatic or alicyclic dicarboxylic acid having 3 to 20 carbon atoms, The group Glycol is an aliphatic or cycloaliphatic glycol having 2 to 20 carbon atoms.

More specifically, as the dicarboxylic acid compound, terephthalic acid, isophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, succinic acid, glutaric acid, adipic acid, (1,4-, 1,5-, 2,3-, 2,6- or 2,7-) naphthalene dicarboxylic acid, 4,4'-biphenyldicarboxylic acid, 4,4 ' - dibenzyldicarboxylic acid, and the like, but the present invention is not limited thereto. Preferably, terephthalic acid, isophthalic acid or a mixture thereof is used. Examples of the glycol compound include ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, (1,2-, 1,3- or 1,4-) cyclohexanedimethanol, neopentyl glycol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol and the like can be used, It is not. Preferably, ethylene glycol, cyclohexanedimethanol or a mixture thereof is used.

The polyester resin can be synthesized using a dicarboxylic acid compound and a glycol compound as described above. The production of a polyester resin using a dicarboxylic acid compound and a glycol compound is usually carried out in two stages of an esterification reaction and a polycondensation reaction, and the production process thereof is already well known in the art.

(B) Take over Flame retardant

The phosphorus-based flame retardant contained in the composition of the present invention is eco-friendly because it does not generate a halogen-based gas during processing or molding and combustion of the resin composition, and is used in combination with a nitrogen-based flame retardant described below to minimize deterioration of the mechanical and thermal properties of the composition .

As the phosphorus flame retardant usable in the present invention, a phosphorus acid ester compound, a pyrophosphate flame retardant, a phosphonate flame retardant, a phosphinate flame retardant and a mixture thereof may be preferably used.

Examples of the phosphate ester compound include, but are not limited to, a monomer compound having one aromatic group such as triphenyl phosphate (TPP), trixylenyl phosphate (TXP), or tricresyl phosphate (Tricresyl phosphate, TCP); A monomer compound having two or more aromatic groups such as resorcinyl diphenyl phosphate (RDP), phenyl diresorcinyl phosphate, cresyl diphenyl phosphate, xylylenyl Xylenyl diphenyl phosphate or phenyl di (isopropylphenyl) phosphate; And oligomers or polyphosphates having a dimer or more.

As the phosphonate-based flame retardant, a flame retardant copolymerized with a polycarbonate having a crosslinked polyphosphonate structure which is reactive by introducing phosphoric acid ester bond into the molecule is preferably used. Specifically, a flame retardant having a repeating unit structure represented by the following general formula (1) can be preferably used.

[Chemical Formula 1]

In the flame retardant of Formula 1, the phosphorus content is preferably 6.5% by weight and the weight average molecular weight is 45,000 to 50,000.

As the phosphinate-based flame retardant, metal-substituted monophosphinate or diphosphinate flame retardant may preferably be used alone or in combination. According to a preferred embodiment of the present invention, the metal-substituted monophosphinate and the diphosphinate flame retardant represented by the following general formulas (2) and (3), respectively, may be used alone or in combination.

(2)

(3)

Wherein R ¹ and R ² each independently represent a linear or branched C ₁ -C ₆ alkyl or phenyl, and R ³ represents a linear or branched alkylene group (preferably C ₁ C ₁₀ alkylene), arylene (preferably C ₆ Arylene), alkyl-substituted arylene (preferably C ₆ -C ₁₀ alkyl substituted with one or more C ₁ -C ₁₀ alkyl) Arylene) or aryl-substituted alkylene (preferably, at least one C ₆ Represents a C ₁ -C ₁₀ alkylene) substituted with an aryl, M is a metal such as calcium, magnesium, zinc or aluminum, m is 2 or 3, n is 1 to 3, x is 1 or 2.

The resin composition of the present invention contains 11 to 16% by weight, more preferably 11 to 13% by weight, of the phosphorus-based flame retardant based on the total weight of the composition. If the phosphorus-containing flame retardant content in the composition is less than 11% by weight, it is difficult to effectively impart flame retardancy at various thicknesses (e.g., 0.8 mm or 1.6 mm). If the content exceeds 16% by weight, The mechanical properties such as tensile strength are deteriorated, which is not only disadvantageous from the viewpoint of cost, but also causes a great disadvantage in workability in injection and molding at the time of extrusion and injection, and the surface characteristics of the molded article may also be deteriorated.

According to a preferred embodiment of the present invention, a phosphinate-based flame retardant and a phosphonate-based flame retardant may be used in combination as the phosphorus-based flame retardant, wherein the amount of each flame retardant is, based on the total weight of the composition, To 15% by weight of a flame retardant and 1 to 3% by weight of a phosphonate flame retardant, with the proviso that the total amount of the flame retardant is in the range of 11 to 16% by weight based on the total weight of the composition.

(C) Nitrogen series Flame retardant

As the nitrogen-based flame retardant contained in the composition of the present invention, a nitrogen-phosphorus-containing flame retardant may be preferably used. Specifically selected from melamine, melamine cyanurate, triphenyl isocyanurate, melamine polyphosphonate, melamine phosphate, melamine pyrophosphate, ammonium polyphosphate, alkylamine phosphate, piperidine acid polyphosphate, and mixtures thereof A nitrogen-phosphorus flame retardant may be used. In addition to the above, various kinds of nitrogen-based flame retardants and / or intumescent additives (for example, dipentaerythritol, starch, polyhydric compounds such as dextrin, inorganic acids, etc.) It is possible.

In the resin composition of the present invention, the nitrogen-based flame retardant is contained in an amount of 3 to 7 wt%, more preferably 3 to 5 wt%, based on the total weight of the composition. If the content of the nitrogen-based flame retardant in the composition is less than 3% by weight, the synergistic effect with the phosphorus-based flame retardant is small and it is difficult to realize the flame retardancy of the composition. If it exceeds 7% by weight, Gas may be generated and the quality of the surface of the molded article may deteriorate.

(D) Weapons filler

The inorganic filler contained in the composition of the present invention is a component that contributes mechanical strength, heat resistance and dimensional stability to a molded article and contributes to improvement of processability and moldability.

As the inorganic filler, inorganic fillers conventionally used in the flame retardant resin composition can be used without any particular limitation. For example, at least one selected from the group consisting of glass fiber, carbon fiber, glass bead, glass flake, clay, kaolin, talc, mica, calcium carbonate and barium sulfate can be used, . As the glass fiber, the use of a chopped strand of a short fiber length, for example, chopped glass having a diameter of 8 to 18 탆 and a length of 2 to 7 mm, is preferred because the processability and mechanical properties . A coupling agent may be additionally added to improve adhesion to the resin.

The resin composition of the present invention contains the inorganic filler in an amount of 15 to 45% by weight, more preferably 20 to 40% by weight, based on the total weight of the composition. If the content of the inorganic filler in the composition is less than 15% by weight, the effect of improving the mechanical strength and heat resistance is negligible. If the content exceeds 45% by weight, the workability is deteriorated and the inorganic filler protrudes to the outer surface of the molded article, .

(E) Polysiloxane - Polycarbonate Copolymer

The polysiloxane-polycarbonate copolymer contained in the composition of the present invention may preferably have a structure represented by the following general formula (4) or (5).

[Chemical Formula 4]

[Chemical Formula 5]

In the general formulas (4) and (5), R ₁ may independently represent a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group or an aryl group, and R ₂ may independently represent a hydrocarbon group or a hydroxy group having 1 to 13 carbon atoms , R ₃ may independently represent an alkylene group having 2 to 8 carbon atoms, and R ₄ represents an aromatic hydrocarbon group having 6 to 30 carbon atoms, which is optionally substituted with alkyl, cycloalkyl, alkenyl, alkoxy, halogen atom, , 1 represents an integer of 1 to 20, m represents an integer of 0 to 10, and n represents an integer of 2 to 1000.

The polysiloxane-polycarbonate copolymer may have an aromatic, aliphatic, or aromatic and aliphatic structure, and may include halogen, oxygen, nitrogen, and / or sulfur.

The polysiloxane-polycarbonate copolymer may also preferably comprise a hydroxy-terminated siloxane, and the content thereof is preferably 5 to 15% by weight based on the total weight of the polysiloxane-polycarbonate copolymer. The polysiloxane-polycarbonate copolymer may also preferably have a viscosity average molecular weight in the range of 15,000 to 200,000.

The resin composition of the present invention contains the polysiloxane-polycarbonate copolymer in an amount of 5 to 15% by weight, more preferably 5 to 10% by weight, based on the total weight of the composition. If the content of the polysiloxane-polycarbonate copolymer in the composition is less than 5% by weight, the effect of improving the mechanical properties, workability and surface properties is insignificant. If the content of the polysiloxane-polycarbonate copolymer exceeds 15% by weight, the flame retardant content And the mechanical properties such as heat distortion temperature and tensile strength are deteriorated, which is not preferable.

In addition to the components described above, the composition of the present invention may additionally include additives generally usable in a flame retardant polyester resin composition that does not contain a halogen material, so long as it does not deviate from the object. Further, the kind and content of the specific additives which may be included may be easily selected by those skilled in the art depending on various purposes.

According to one embodiment of the present invention, there is provided a lubricant composition comprising a lubricant, an antioxidant, a light stabilizer, a hydrolytic stabilizer, a releasing agent, a pigment, an antistatic agent, a conductivity imparting agent, a magnetic agent, a crosslinking agent, an antibacterial agent, The additive component selected from the ring agent may be added to the composition alone or in a mixture of two or more thereof. The total amount of these additives to be added is usually from 0.2 to 5 parts by weight based on 100 parts by weight of the composition before addition, but is not limited thereto.

There is no particular limitation on the method for producing the polyester resin composition of the present invention by using each of the components as described above, and the resin composition can be produced using a general resin composition manufacturing method known in the art. For example, the compositions of the present invention can be obtained by mixing and uniformly dispersing each component in a mixer.

According to another aspect of the present invention, there is provided a molded article characterized by being produced by processing the non-halogenated flame retardant polyester resin composition of the present invention.

The method of producing the polyester resin composition of the present invention by processing it is not particularly limited and may be molded and manufactured by using a general resin composition processing method known in the art.

According to one embodiment of the present invention, the polyester resin composition of the present invention is extruded into a pellet for molding at a temperature of 240 to 280 ° C by a commonly used blending method, by a biaxial melt-kneading extruder It is more preferable to perform vacuum defoaming at the vent portion of the extruder), and then the resulting pellet is dried by hot air at 100 to 120 DEG C for 4 hours or more and then molded into an injection molding machine to produce a final molded product.

The polyester resin composition according to the present invention and the molded article produced therefrom have effective flame retardancy at various thicknesses without containing a halogen material, and have high heat resistance and mechanical properties, and have effective processability and appearance characteristics , Molded products for various purposes, and interior / exterior parts, and can be effectively applied to connector parts, which are major components in electric / electronic devices and various OA devices.

Hereinafter, the present invention will be described more specifically by way of examples. However, these examples are provided only for the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

[ Example ]

Example  1 to 7 and Comparative Example  1 to 9

The components used in the following examples and comparative examples are as follows.

(A) polyester resin: polybutylene terephthalate [intrinsic viscosity: 1.1 dl / g (25 DEG C, in a phenol / tetrachloroethane 50/50 (v / v) solution]

(B1) phosphinate-based flame retardant: aluminum diethyl polyphosphinate (phosphorus content: 23% by weight)

(B2) Phosphonate-based flame retardant: Crosslinked polyphosphonate (phosphorus content: 6.5% by weight, weight average molecular weight: about 46000)

(C) Nitrogen-based flame retardant: melamine polyphosphonate (phosphorus content: 12% by weight)

(D) Inorganic filler: glass fiberglass (length: about 3mm)

(E) Polysiloxane-polycarbonate copolymer (siloxane content: 10% by weight) of the above formula (4)

The raw materials as shown in Table 1 and Table 2 were mixed and dispersed uniformly in a Henschel mixer, and then extruded by a biaxial melt kneading extruder having L / D = 48 and f = 25 mm And then extruded at a temperature of ~ 240 ° C to form pellets. The mixture was hot-air dried at 100-120 ° C for 4 hours and injection molded at a temperature of 250-265 ° C to prepare a polyester resin composition specimen. All the components except for phosphinate flame retardant and inorganic filler were put in a state of being thoroughly mixed with a main injector, and a phosphinate-based flame retardant and an inorganic filler were side-fed through an intermediate point of the extruder to prepare a resin composition .

The physical properties of the prepared specimens were measured by the following methods, and the results are shown in Table 3 (Examples) and Table 4 (Comparative Example).

 (1) Impact strength: Evaluation was made according to ASTM D256 (1/8 inch thickness, Notch Izod).

 (2) Flammability: Measured according to UL94 (Underwriter's Laboratory Inc.) test method. This is a method of evaluating the flame retardancy from the durability and durability of the flame after the flame of the burner is applied to the specimen of a certain size maintained vertically for 10 seconds. The surface of the label, which is located about 300 mm below the lower end of the specimen, is dripped from the specimen by the drip, It is determined through the ignition by water, the flammability class is divided as follows.

(3) Gloss characteristics of appearance: Proceeding according to the standards of ASTM D523 and D2457. The specimens were injection-molded using the same mold and injection molding machine. 100mm * 100mm * 3mm specimens were injection-molded and polished at 85 ° angle with a digital micro gloss meter. The higher the measured value, the better the gloss characteristics.

(4) Molding processability: The ease of continuous extrusion and the difficulty in evaluating the extrudability of the composition under the same conditions were evaluated based on the number of breaks of the strands due to the swell generated in the extruder die and the strength reduction of the strands. Relatively, [◎ - continuous extrusion is possible, ○ - relatively continuous process is possible, △ - continuous processability is weak, X-continuous process is not possible].

(5) Flow stability: Spiral specimens were prepared to determine the difference in flow stability during molding. The same mold temperature (260 ° C) and the same mold temperature (80 ° C) were maintained constantly regardless of shot number so that there was no change in flow characteristics due to temperature. For this purpose, contact type thermometer was used, The temperature was continuously monitored. In this way, the length of spiral specimens continuously injection molded under the same conditions was measured, and the spiral length varied according to the shot number 10 times was measured, and the standard deviation of the average . The lower the measured value, the better the flow stability.

As can be seen from the results of Tables 3 and 4, the compositions according to the present invention exhibited excellent physical properties in all items evaluated, and in particular, showed excellent balance of flow stability, external surface characteristics and molding processability. On the other hand, the comparative compositions exhibited poor physical properties in at least one of the evaluated items, and in particular, at least one of flow stability, appearance surface properties and molding processability was poor.

Claims (13)

Based on the total weight of the composition,
25 to 55% by weight of a polyester resin;
11 to 16% by weight phosphorylated flame retardant;
3 to 7% by weight of a nitrogen-based flame retardant;
15 to 45% by weight of an inorganic filler; And
5 to 15% by weight of a polysiloxane-polycarbonate copolymer;
A non - halogenated starch - softened polyester resin composition. The non-halogenated flame retardant polyester resin composition according to claim 1, wherein the polyester resin is selected from the group consisting of polyethylene terephthalate resin, polypropylene terephthalate resin, polybutylene terephthalate resin and mixtures thereof. The non-halogenated flame retardant polyester resin composition according to claim 1, wherein the polyester resin has an intrinsic viscosity (IV) at 25 캜 of 0.8 to 1.5 dl / g. The non-halogen flame retardant polyester resin composition according to claim 1, wherein the phosphorus flame retardant is selected from a phosphoric ester compound, a pyrophosphate flame retardant, a phosphonate flame retardant, a phosphinate flame retardant, and mixtures thereof. The non-halogen flame retardant polyester resin composition according to claim 4, wherein the phosphonate flame retardant has a repeating unit structure represented by the following formula (1):
[Chemical Formula 1]

The non-halogenated flame retardant polyester resin composition according to claim 4, wherein the phosphinate-based flame retardant is a metal-substituted monophosphinate or a phosphinite flame retardant, or a combination thereof. The non-halogenated flame retardant polyester resin composition according to claim 1, wherein the phosphorus flame retardant is a combination of a phosphinate flame retardant and a phosphonate flame retardant. The method of claim 1, wherein the nitrogen based flame retardant is selected from the group consisting of melamine, melamine cyanurate, triphenyl isocyanurate, melamine polyphosphonate, melamine phosphate, melamine pyrophosphate, ammonium polyphosphate, alkylamine phosphate, piperidine acid polyphosphate Halogen-containing flame retardant, and a mixture thereof. The non-halogen flame retardant polyolefin according to claim 1, wherein the inorganic filler is at least one selected from the group consisting of glass fiber, carbon fiber, glass bead, glass flake, clay, kaolin, talc, mica, calcium carbonate and barium sulfate. Ester resin composition. The non-halogenated flame retardant polyester resin composition according to claim 1, wherein the polysiloxane-polycarbonate copolymer has a structure represented by the following formula (4) or (5):
[Chemical Formula 4]

[Chemical Formula 5]

In Formula 4 and 5, R ₁ independently represents a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, or aryl, R ₂ is independently represent a hydrocarbon group or hydroxy group of a carbon number of 1 to 13, R ₃ is Independently represents an alkylene group of 2 to 8 carbon atoms and R ₄ represents an aromatic hydrocarbon group of 6 to 30 carbon atoms which is substituted or unsubstituted with alkyl, cycloalkyl, alkenyl, alkoxy, halogen atom, or nitro, 20, m is 0 to 10, and n is an integer of 2 to 1000. The non-halogen flame retardant polyester resin composition according to claim 1, wherein the polysiloxane-polycarbonate copolymer comprises a hydroxyl-terminated siloxane. A molded article characterized by being produced by processing the non-halogenated flame retardant polyester resin composition of any one of claims 1 to 11. The molded article according to claim 12, which is a connector part of an electric / electronic appliance.