KR20240002492A - Thermoplastic resin composition and article produced therefrom - Google Patents

Abstract

The thermoplastic resin composition of the present invention contains 10 to 50% by weight of a first polypropylene resin with a melt flow index of 0.1 to 1 g/10 min and 50 to 90% by weight of a second polypropylene resin with a melt flow index of 25 to 45 g/10 min. 100 parts by weight of polypropylene resin containing; 30 to 60 parts by weight of a phosphorus nitrogen-based flame retardant; 1 to 20 parts by weight of talc; And 0.5 to 7 parts by weight of saturated fatty acid bis amide. The thermoplastic resin composition is excellent in thin film flame retardancy, fluidity, and balance of physical properties.

Description

Thermoplastic resin composition and molded article manufactured therefrom {THERMOPLASTIC RESIN COMPOSITION AND ARTICLE PRODUCED THEREFROM}

The present invention relates to thermoplastic resin compositions and molded articles made therefrom. More specifically, the present invention relates to a thermoplastic resin composition excellent in thin film flame retardancy, fluidity, balance of physical properties, etc., and molded articles manufactured therefrom.

Polyolefin resin has excellent mechanical, thermal, and electrical properties, chemical resistance, and moldability, and is widely used in various fields. However, since polyolefin resin is one of the highly flammable resins, it is necessary to add a flame retardant system to provide flame retardancy.

Eco-friendly flame retardant systems applicable to polyolefin resins include metal hydroxides and phosphorus-based flame retardants. However, in the case of metal hydroxides, there is a problem in that a large amount of flame retardant is added, which reduces formability, water resistance, and mechanical properties, and in the case of phosphorus-based flame retardants, even if a relatively small amount is added compared to metal hydroxide, halogen , it is advantageous in realizing flame retardancy without containing heavy metals, etc., but compared to existing halogen-based flame retardants, the input amount is still large, and effective dispersion of the flame retardant is difficult, showing limitations in terms of flame retardancy and appearance characteristics.

Moreover, as environmental and energy issues become issues, the environmentally friendly design of plastic products is emphasized, and the designs of products are gradually becoming lighter and thinner. In addition, the trend of strengthening flame retardant standards for enclosure materials of electrical and electronic products continues, and the revised edition of the refrigerator standard IEC 60335-2-24 calls for strengthening flame retardant materials for parts in contact with insulation.

Accordingly, there is a demand for materials that simultaneously exhibit thin film flame retardancy and high fluidity (injection moldability), but it is difficult to realize these effects with existing flame retardant thermoplastic resin compositions.

Therefore, there is a need to develop a thermoplastic resin composition with excellent thin film flame retardancy, fluidity, and balance of physical properties.

The background technology of the present invention is disclosed in Korean Patent Publication No. 10-2013-0048426, etc.

The purpose of the present invention is to provide a thermoplastic resin composition with excellent thin film flame retardancy, fluidity, and balance of physical properties.

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 all 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 is 10 to 50% by weight of a first polypropylene resin having a melt-flow index (MI) of 0.1 to 1 g/10 min, measured at 230°C and 2.16 kg load according to ASTM D1238. And according to ASTM D1238, a poly containing 50 to 90% by weight of a second polypropylene resin with a melt flow index (MI) of 25 to 45 g/10 min measured at 230°C and 2.16 kg load. 100 parts by weight of propylene resin; 30 to 60 parts by weight of a phosphorus nitrogen-based flame retardant; 1 to 20 parts by weight of talc; and 0.5 to 7 parts by weight of saturated fatty acid bisamide.

2. In the first embodiment, the first polypropylene resin may include one or more of homo polypropylene resin, block polypropylene resin, and random polypropylene resin.

3. In the first or second embodiment, the second polypropylene resin may be a highly crystalline polypropylene resin.

4. In embodiments 1 to 3, the nitrogen-based flame retardant is piperazine pyrophosphate, melamine phosphate, melamine polyphosphate, melam pyrophosphate, melem pyrophosphate, melon pyrophosphate, melamine pyrophosphate, dimelamine pyrophosphate, and melam polyphosphate. It may contain one or more of phosphate, melon polyphosphate, melem polyphosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, and ammonium polyphosphate.

5. In embodiments 1 to 4, the phosphorus nitrogen-based flame retardant may include 40 to 85% by weight of piperazine pyrophosphate and 15 to 60% by weight of melamine polyphosphate.

6. In embodiments 1 to 5, the saturated fatty acid bis amide is one of methylene bis stearamide, methylene bis oleamide, ethylene bis stearamide, ethylene bis oleamide, hexamethylene bis stearamide, and hexamethylene bis oleamide. It may include more.

7. In embodiments 1 to 6, the weight ratio of the phosphorus nitrogen-based flame retardant and the talc may be 1:0.08 to 1:0.5.

8. In embodiments 1 to 7, the weight ratio of the phosphorus nitrogen-based flame retardant and the saturated fatty acid bis amide may be 1:0.01 to 1:0.16.

9. In embodiments 1 to 8, the weight ratio of the talc and the saturated fatty acid bis amide may be 1:0.05 to 1:1.

10. In embodiments 1 to 9, the thermoplastic resin composition may have a flame resistance of V-0 in a 0.8 mm thick injection specimen measured by the UL-94 vertical test method.

11. In embodiments 1 to 10, the thermoplastic resin composition may have a flame resistance of 5VA for a 1.2 mm thick injection specimen measured by the UL94 5V vertical burning test method.

12. In embodiments 1 to 11, the thermoplastic resin composition has a melt-flow index (MI) of 3 to 9 g/10 minutes, measured at 230°C and a load of 2.16 kg, according to ASTM D1238. You can.

13. Another aspect of the present invention relates to molded articles. The molded article is characterized in that it is formed from the thermoplastic resin composition according to any one of items 1 to 12 above.

The present invention has the effect of providing a thermoplastic resin composition excellent in thin film flame retardancy, fluidity, balance of physical properties, etc., and a molded article formed therefrom.

Hereinafter, the present invention will be described in detail as follows.

The thermoplastic resin composition according to the present invention includes (A) polypropylene resin; (B) phosphonitrogen-based flame retardant; (C) Talc; and (D) saturated fatty acid bisamide.

In this specification, “a to b” indicating a numerical range is defined as “≥a and ≤b”.

(A) Polypropylene resin

The polyolefin resin according to one embodiment of the present invention includes (A1) a first polypropylene resin having a melt-flow index (MI) of 0.1 to 1 g/10 min; And (A2) a second polypropylene resin having a melt-flow index (MI) of 25 to 45 g/10 min.

(A1) First polypropylene resin

The first polypropylene resin according to one embodiment of the present invention is applied at a specific content ratio with the second polypropylene resin, and is applied together with a phosphonitrogen-based flame retardant, talc, and saturated fatty acid bis amide to improve the thin film flame retardancy, fluidity, and fluidity of the thermoplastic resin composition. In order to improve the balance of these properties, a polypropylene resin having the above melt flow index applied to a typical thermoplastic resin composition can be used.

In an embodiment, the first polypropylene resin may include one or more of homo polypropylene resin, block polypropylene resin, and random polypropylene resin. Specifically, the first polypropylene resin may be a block polypropylene resin composed of a homo polypropylene block, an ethylene-propylene copolymer block, and/or a homo polyethylene block.

In a specific example, the first polypropylene resin has a melt-flow index (MI) measured under ASTM D1238 at 230°C and a load of 2.16 kg of 0.1 to 1 g/10 minutes, for example. It may be 0.5 to 1 g/10 minutes. If the melt flow index of the first polypropylene resin is less than 0.1 g/10 min, there is a risk that the flame retardancy and fluidity of the thin film of the thermoplastic resin composition may decrease, and if it exceeds 1 g/10 min, the thin film of the thermoplastic resin composition may be deteriorated. There is a risk that flame retardancy, etc. may be reduced.

In an embodiment, the first polypropylene resin may be included in 10 to 50% by weight, for example, 20 to 40% by weight, based on 100% by weight of the total polypropylene resin. If the content of the first polypropylene resin is less than 10% by weight, there is a risk that the thin film flame retardancy, etc. of the thermoplastic resin composition may be reduced, and if it exceeds 50% by weight, there is a risk that the thin film flame retardancy, fluidity, etc. of the thermoplastic resin composition may be reduced. There is.

(A2) Second polypropylene resin

The second polypropylene resin according to one embodiment of the present invention is applied at a specific content ratio with the first polypropylene resin, and is applied together with a phosphonitrogen-based flame retardant, talc, and saturated fatty acid bis amide, to improve the thin film flame retardancy, fluidity, and fluidity of the thermoplastic resin composition. In order to improve the balance of these properties, a polypropylene resin having the above melt flow index applied to a typical thermoplastic resin composition can be used.

In a specific example, the second polypropylene resin may include one or more of homo polypropylene resin, block polypropylene resin, and random polypropylene resin. Specifically, the second polypropylene resin may be a block polypropylene resin composed of a homo polypropylene block, an ethylene-propylene copolymer block, and/or a homo polyethylene block. Additionally, the second polypropylene resin may be a highly crystalline polypropylene resin (HC-PP) containing one or more of homo polypropylene resin, block polypropylene resin, and random polypropylene resin. Here, the highly crystalline polypropylene resin may have an isotactic index of at least 98.0% or more.

In a specific example, the second polypropylene resin has a melt-flow index (MI) measured under ASTM D1238 at 230°C and a load of 2.16 kg of 25 to 45 g/10 minutes, for example. It may be 30 to 40 g/10 minutes. If the melt flow index of the second polypropylene resin is less than 25 g/10 min, there is a risk that the thin film flame retardancy of the thermoplastic resin composition may decrease, and if it exceeds 45 g/10 min, the thin film flame retardancy of the thermoplastic resin composition may decrease, There is a risk that liquidity, etc. may decrease.

In a specific example, the first polypropylene resin may be included in 50 to 90% by weight, for example, 60 to 80% by weight, based on 100% by weight of the total polypropylene resin. If the content of the first polypropylene resin is less than 50% by weight, there is a risk that the thin film flame retardancy, fluidity, etc. of the thermoplastic resin composition may be reduced, and if it exceeds 90% by weight, there is a risk that the thin film flame retardancy, etc. of the thermoplastic resin composition may be reduced. There is.

(B) Nitrogen-based flame retardants

The phosphorus nitrogen-based flame retardant according to one embodiment of the present invention can be applied to the polypropylene resin together with talc and saturated fatty acid bis amide to improve the thin film flame retardancy, fluidity, and balance of physical properties of the thermoplastic resin composition. A phosphorus nitrogen-based flame retardant used in thermoplastic resin compositions may be used.

In an embodiment, the nitrogen-based flame retardant is piperazine pyrophosphate, melamine phosphate, melamine polyphosphate, melam pyrophosphate, melem pyrophosphate, melon pyrophosphate, melamine pyrophosphate, dimelamine pyrophosphate, melam polyphosphate, melon polyphosphate, It may include melem polyphosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium polyphosphate, combinations thereof, polysalts thereof, etc. For example, the phosphorus nitrogen-based flame retardant may be piperazine pyrophosphate, melamine polyphosphate, or a combination thereof.

In an embodiment, the nitrogen-based flame retardant may include 40 to 85% by weight of the piperazine pyrophosphate, for example 45 to 80% by weight, and 15 to 60% by weight, for example, 20 to 55% by weight of the melamine polyphosphate. there is. Within the above range, the thin film flame retardancy of the thermoplastic resin composition may be excellent.

In a specific example, the phosphorus nitrogen-based flame retardant may be included in an amount of 30 to 60 parts by weight, for example, 35 to 55 parts by weight, based on 100 parts by weight of the polypropylene resin. If the content of the nitrogen-based flame retardant is less than 30 parts by weight based on 100 parts by weight of the polypropylene resin, there is a risk that the thin film flame retardancy of the thermoplastic resin composition may decrease, and if it exceeds 60 parts by weight, the fluidity of the thermoplastic resin composition, There is a risk that impact resistance, etc. may be reduced.

(C) Talc

Talc according to one embodiment of the present invention can be applied to the polypropylene resin together with a phosphorus nitrogen-based flame retardant and saturated fatty acid bis amide to improve the thin film flame retardancy, fluidity, and balance of physical properties of the thermoplastic resin composition. Phosphorus plate-shaped talc can be used.

In a specific example, the talc may have an average particle size of 5 to 20 ㎛, for example, 9 to 13 ㎛, as measured by a particle size measuring device (Malvern Panalytical, Mastersizer 300). Within the above range, the thermoplastic resin composition may have excellent fluidity, dimensional stability, impact resistance, and appearance characteristics.

In a specific example, the talc may be included in an amount of 1 to 20 parts by weight, for example, 5 to 7 parts by weight, based on 100 parts by weight of the polypropylene resin. If the content of talc is less than 1 part by weight based on 100 parts by weight of the polypropylene resin, there is a risk that the thin film flame retardancy and dimensional stability of the thermoplastic resin composition may decrease, and if it exceeds 20 parts by weight, the fluidity of the thermoplastic resin composition may decrease. , there is a risk that impact resistance, etc. may be reduced.

In a specific example, the weight ratio of the phosphorus nitrogen-based flame retardant and the talc (phosphorus nitrogen-based flame retardant: talc) may be 1:0.08 to 1:0.5, for example, 1:0.1 to 1:0.4. Within the above range, the thin film flame retardancy, fluidity, dimensional stability, etc. of the thermoplastic resin composition (molded article) may be more excellent.

(D) Saturated fatty acid bisamide

Saturated fatty acid bisamide according to one embodiment of the present invention can be applied to the polypropylene resin together with a phosphorus nitrogen-based flame retardant and talc to improve the thin film flame retardancy, fluidity, and balance of physical properties of the thermoplastic resin composition. Saturated fatty acid bisamide can be used.

In specific examples, the saturated fatty acid bis amide is methylene bis stearamide, methylene bis oleamide, ethylene bis stearamide, ethylene bis oleamide, It may include hexamethylene bis stearamide, hexamethylene bis oleamide, and combinations thereof. For example, ethylene bisstearamide, etc. can be used.

In a specific example, the saturated fatty acid bisamide may be included in an amount of 0.5 to 7 parts by weight, for example, 1 to 5 parts by weight, based on 100 parts by weight of the polypropylene resin. If the content of the saturated fatty acid bisamide is less than 0.5 parts by weight based on 100 parts by weight of the polypropylene resin, there is a risk that the fluidity of the thermoplastic resin composition may decrease, and if it exceeds 7 parts by weight, the thin film flame retardancy of the thermoplastic resin composition may decrease. There is a risk that your back will deteriorate.

In a specific example, the weight ratio of the phosphorus nitrogen-based flame retardant and the saturated fatty acid bis amide (phosphorus nitrogen-based flame retardant: saturated fatty acid bis amide) may be 1:0.01 to 1:0.16, for example, 1:0.02 to 1:0.12. Within the above range, the thin film flame retardancy, fluidity, etc. of the thermoplastic resin composition (molded article) may be more excellent.

In a specific example, the weight ratio of the talc and the saturated fatty acid bis amide (talc: saturated fatty acid bis amide) may be 1:0.05 to 1:1, for example, 1:0.1 to 1:0.6. Within the above range, the thin film flame retardancy, fluidity, etc. of the thermoplastic resin composition (molded article) may be more excellent.

The thermoplastic resin composition according to one embodiment of the present invention may further include additives included in conventional thermoplastic resin compositions. Examples of the additives include, but are not limited to, anti-dripping agents, antioxidants, surfactants, lubricants, mold release agents, nucleating agents, stabilizers, pigments, dyes, and mixtures thereof.

In a specific example, when using the additive, its content 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 polypropylene resin.

The thermoplastic resin composition according to one embodiment of the present invention may be in the form of a pellet obtained by mixing the above components and melt-extruding the mixture at 180 to 280°C, for example, 200 to 260°C using a conventional twin-screw extruder.

In a specific example, the thermoplastic resin composition may have a flame resistance of V-0 for a 0.8 mm thick injection specimen measured by the UL-94 vertical test method.

In a specific example, the thermoplastic resin composition may have a flame resistance of 5VA for a 1.2 mm thick injection specimen measured by the UL94 5V vertical burning test method.

In a specific example, the thermoplastic resin composition has a melt-flow index (MI) of 3 to 9 g/10 minutes, for example, 4 to 9 g/10 minutes, as measured under ASTM D1238 at 230°C and a load of 2.16 kg. It may be 8 g/10 minutes.

The molded article according to the present invention is formed from the thermoplastic resin composition. The thermoplastic resin composition can be manufactured in the form of pellets, and the manufactured pellets can be manufactured into various molded articles (products) through various molding methods such as injection molding, extrusion molding, vacuum molding, and casting molding. This forming method is well known to those skilled in the art.

In a specific example, the molded article is excellent in antiviral properties, flame retardancy, and the balance of these properties, and is therefore useful as an antiviral exterior material for products with frequent physical contact.

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

Example

Hereinafter, the specifications of each component used in the examples and comparative examples are as follows.

(A) Polypropylene resin

(A1) Block polypropylene resin (B-PP, manufacturer: Lotte Chemical, product name: B310, melt-flow index (MI): 0.7 g/10 minutes) was used.

(A2) High crystallinity polypropylene resin (HC-PP, manufacturer: Lotte Chemical, product name: JSS-370N, melt-flow index (MI): 35 g/10 minutes) was used.

(A3) Block polypropylene resin (B-PP, manufacturer: Lotte Chemical, product name: JH330M, melt-flow index (MI): 5 g/10 minutes) was used.

(B) Flame retardant

(B1) A mixture containing the nitrogen-based flame retardant piperazine pyrophosphate and melamine polyphosphate (manufacturer: Presafer, product name: EPFR-110DN) was used.

(B2) Bisphenol A diphosphate (manufacturer: DAIHACHI, product name: CR-741), a phosphorus-based flame retardant, was used.

(C) Talc

Talc (manufacturer: Koch, product name: KC-3000) was used.

(D) Saturated fatty acid bisamide

Ethylene bisstearamide (manufacturer: Lion Chem, product name: LEBAX-140B) was used.

Examples 1 to 9 and Comparative Examples 1 to 11

Each of the above components was added in the amounts shown in Tables 1, 2, and 3 below, and then extruded at 200°C to prepare pellets. For extrusion, a twin-screw extruder with L/D = 36 and a diameter of 45 mm was used. The manufactured pellets were dried at 80℃ for more than 2 hours and then injected in a 6 oz injection machine (molding temperature: 210℃, mold temperature: 60℃). Specimens were prepared. The physical properties of the manufactured specimens were evaluated by the following method, and the results are shown in Tables 1, 2, and 3 below.

How to measure physical properties

(1) Thin film flame retardancy evaluation: The flame retardancy of a 0.8 mm thick injection molded specimen was measured using the UL-94 vertical test method. (B.O: burn out)

(2) Thin film flame retardancy evaluation: The flame retardancy of a 1.2 mm thick injection molded specimen was measured using the UL94 5V vertical burning test method. (B.O: burn out)

(3) Fluidity (injection moldability) evaluation: According to ASTM D1238, melt flow index (MI, unit: g/10 min) was measured at 230°C and 2.16 kg load.

Example One 2 3 4 5 6 7 8 9 (A) (% by weight) (A1) 20 30 40 30 30 30 30 30 30 (A2) 80 70 60 70 70 70 70 70 70 (A3) - - - - - - - - - (B1) (part by weight) 45 45 45 35 55 45 45 45 45 (B2) (parts by weight) - - - - - - - - - (C) (parts by weight) 10 10 10 10 10 5 15 10 10 (D) (parts by weight) 3 3 3 3 3 3 3 One 5 Flame retardant (0.8T) V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 Flame retardant (1.2T) 5VA 5VA 5VA 5VA 5VA 5VA 5VA 5VA 5VA melt flow index 7.5 6.5 5.5 5.5 4 6 4.5 4 7

* Parts by weight: Parts by weight relative to 100 parts by weight of polypropylene resin (A)

Comparative example One 2 3 4 5 6 (A) (% by weight) (A1) 5 55 - 30 30 30 (A2) 95 45 70 - 70 70 (A3) - - 30 70 - - (B1) (part by weight) 45 45 45 45 25 65 (B2) (parts by weight) - - - - - - (C) (parts by weight) 10 10 10 10 10 10 (D) (parts by weight) 3 3 3 3 3 3 Flame retardant (0.8T) V-2 V-2 V-0 V-0 B.O. V-0 Flame retardant (1.2T) Fail 5VA Fail Fail B.O. 5VA melt flow index 10 One 15 10 6 One

* Parts by weight: Parts by weight relative to 100 parts by weight of polypropylene resin (A)

Comparative example 7 8 9 10 11 (A) (% by weight) (A1) 30 30 30 30 30 (A2) 70 70 70 70 70 (A3) - - - - - (B1) (part by weight) - 45 45 45 45 (B2) (parts by weight) 45 - - - - (C) (parts by weight) 10 0.5 25 10 10 (D) (parts by weight) 3 3 3 0.1 10 Flame retardant (0.8T) B.O. V-0 V-0 V-0 B.O. Flame retardant (1.2T) Fail Fail 5VA 5VA Fail melt flow index 5 5 2 2 15

* Parts by weight: Parts by weight relative to 100 parts by weight of polypropylene resin (A)

From the above results, it can be seen that the thermoplastic resin composition of the present invention is excellent in thin film flame retardancy, fluidity (injection moldability), etc.

On the other hand, in the case of Comparative Example 1 in which the content of the first polypropylene resin is less than the range of the present invention and the content of the second polypropylene resin is more than the range of the present invention, it can be seen that the thin film flame retardancy, etc. is reduced, and the first polypropylene resin is less than the range of the present invention. In the case of Comparative Example 2, in which the content of the propylene resin exceeds the range of the present invention and the content of the second polypropylene resin is less than the range of the present invention, it can be seen that the thin film flame retardancy, fluidity, etc. are reduced, and instead of the first polypropylene resin, , in the case of Comparative Example 3 where polypropylene resin (A3) was applied, it could be seen that the thin film flame retardancy, etc. decreased, and in the case of Comparative Example 4 where polypropylene resin (A3) was applied instead of the second polypropylene resin, the thin film flame retardancy, etc. It can be seen that this is deteriorating. In the case of Comparative Example 5, where the content of the phosphorus nitrogen-based flame retardant is less than the range of the present invention, it can be seen that the thin film flame retardancy, etc. is reduced, and in the case of Comparative Example 6, where the content of the phosphorus nitrogen-based flame retardant exceeds the range of the present invention, the fluidity, etc. is decreased. It can be seen that, in the case of Comparative Example 7 in which the phosphorus-based flame retardant (B2) is applied instead of the phosphorus-nitrogen-based flame retardant, the thin film flame retardancy, etc. is deteriorated. In addition, in the case of Comparative Example 8, where the talc content was less than the range of the present invention, it was seen that the thin film flame retardancy, etc. was reduced, and in the case of Comparative Example 9, where the talc content exceeded the range of the present invention, it was seen that the fluidity, etc. was reduced. In the case of Comparative Example 10, where the content of saturated fatty acid bis amide is below the range of the present invention, it can be seen that fluidity, etc. is reduced, and in the case of Comparative Example 11, where the content of saturated fatty acid bis amide exceeds the range of the present invention, It can be seen that the thin film flame retardancy, etc. deteriorates.

So far, the present invention has been examined focusing on the embodiments. A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

Claims (13)

10 to 50% by weight of the first polypropylene resin with a melt-flow index (MI) of 0.1 to 1 g/10 min measured at 230°C and 2.16 kg load, according to ASTM D1238. Thus, 100 parts by weight of a polypropylene resin containing 50 to 90% by weight of a second polypropylene resin having a melt-flow index (MI) of 25 to 45 g/10 min measured at 230°C and a load of 2.16 kg. ;
30 to 60 parts by weight of a phosphorus nitrogen-based flame retardant;
1 to 20 parts by weight of talc; and
A thermoplastic resin composition comprising 0.5 to 7 parts by weight of saturated fatty acid bisamide.
The thermoplastic resin composition of claim 1, wherein the first polypropylene resin comprises at least one of homo polypropylene resin, block polypropylene resin, and random polypropylene resin.
The thermoplastic resin composition according to claim 1, wherein the second polypropylene resin is a highly crystalline polypropylene resin.
The method of claim 1, wherein the nitrogen-based flame retardant is piperazine pyrophosphate, melamine phosphate, melamine polyphosphate, melam pyrophosphate, melem pyrophosphate, melon pyrophosphate, melamine pyrophosphate, dimelamine pyrophosphate, melam polyphosphate, and melon polyphosphate. A thermoplastic resin composition comprising one or more of phosphate, melem polyphosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, and ammonium polyphosphate.
The thermoplastic resin composition according to claim 1, wherein the nitrogen-based flame retardant includes 40 to 85% by weight of piperazine pyrophosphate and 15 to 60% by weight of melamine polyphosphate.
The method of claim 1, wherein the saturated fatty acid bis amide comprises one or more of methylene bis stearamide, methylene bis oleamide, ethylene bis stearamide, ethylene bis oleamide, hexamethylene bis stearamide, and hexamethylene bis oleamide. A thermoplastic resin composition characterized in that.
The thermoplastic resin composition according to claim 1, wherein the weight ratio of the phosphorus nitrogen-based flame retardant and the talc is 1:0.08 to 1:0.5.
The thermoplastic resin composition according to claim 1, wherein the weight ratio of the phosphorus nitrogen-based flame retardant and the saturated fatty acid bis amide is 1:0.01 to 1:0.16.
The thermoplastic resin composition according to claim 1, wherein the weight ratio of the talc and the saturated fatty acid bis amide is 1:0.05 to 1:1.
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a flame resistance of V-0 for a 0.8 mm thick injection specimen measured by the UL-94 vertical test method.
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a flame resistance of 5VA for a 1.2 mm thick injection specimen measured by the UL94 5V vertical burning test method.
The method of claim 1, wherein the thermoplastic resin composition has a melt-flow index (MI) of 3 to 9 g/10 min, measured at 230°C and 2.16 kg load, according to ASTM D1238. Thermoplastic resin composition.
A molded article formed from the thermoplastic resin composition according to any one of claims 1 to 12.