Environment-friendly polyolefin resin composition and article produced therefrom

Abstract

A polyolefin resin composition of the present invention comprises: about 100 parts by weight of a polypropylene resin including a homopolypropylene resin and a block polypropylene resin; about 3-30 parts by weight of a biomass-derived polyethylene resin; about 7-28 parts by weight of a styrene-ethylene-butylene-styrene copolymer; about 0.7-9 parts by weight of a siloxane-based compound; about 3-18 parts by weight of talc; and about 3-18 parts by weight of glass wool. The polyolefin resin composition is environment-friendly because it uses a biomaterial, and even when a biomaterial is applied, the polyolefin resin exhibits excellent impact resistance, rigidity, scratch resistance, and a good balance of these properties.

Description

Eco-friendly polyolefin resin composition and molded article manufactured therefrom

[0001] The present invention relates to an environmentally friendly polyolefin resin composition and a molded article manufactured therefrom. More specifically, the present invention relates to a polyolefin resin composition manufactured using biomaterials, which is environmentally friendly and exhibits excellent impact resistance, rigidity, scratch resistance, and a balance of these properties, and a molded article manufactured therefrom.

[0002]

[0003] Among polyolefin resins, polypropylene resin has excellent chemical resistance, weather resistance, and processability, making it easy to manufacture into injection molded products, films, and blow molded products, and is widely used in fields such as electrical components, automobiles, and building materials.

[0004] Since the launch of the new climate regime, environmentally friendly issues such as carbon dioxide (CO2) reduction have led to a growing demand for bioplastics in automotive materials. Biomass-derived resins, as bioplastics, refer to resins manufactured from biomass. For example, biomass can be processed or extracted from biological resources such as grains and plants, such as corn, Jerusalem artichoke, sugarcane, sugar beets, or combinations thereof, to produce biofuels such as methanol, ethanol, and biodiesel. Biomass-derived resins can also be manufactured from these biofuels.

[0005] However, when applying eco-friendly materials such as biomass-derived resins (biomaterials) to polyolefin resin compositions including polypropylene resins, there is a disadvantage in that mechanical properties such as rigidity and scratch resistance are lowered compared to general plastic materials (thermoplastic resin compositions).

[0006] Therefore, there is a need to develop a polyolefin resin composition that is environmentally friendly using biomaterials and has excellent impact resistance, rigidity, scratch resistance, and a balance of these properties even when biomaterials are applied.

[0007] The background technology of the present invention is disclosed in Korean Patent No. 10-1636600, etc.

[0008]

[0009] The purpose of the present invention is to provide a polyolefin resin composition that is environmentally friendly using biomaterials and has excellent impact resistance, rigidity, scratch resistance, and a balance of these physical properties even when biomaterials are applied.

[0010] Another object of the present invention is to provide a molded article formed from the polyolefin resin composition.

[0011] The above and other objects of the present invention can all be achieved by the present invention described below.

[0012]

[0013] 1. One aspect of the present invention relates to a polyolefin resin composition. The polyolefin resin composition comprises: about 100 parts by weight of a polypropylene resin including a homopolypropylene resin and a block polypropylene resin; about 3 to about 30 parts by weight of a biomass-derived polyethylene resin; about 7 to about 28 parts by weight of a styrene-ethylene-butylene-styrene copolymer; about 0.7 to about 9 parts by weight of a siloxane-based compound; about 3 to about 18 parts by weight of talc; and about 3 to about 18 parts by weight of glass wool.

[0014] 2. In the above 1 specific example, the polypropylene resin may include about 40 to about 80 wt% of the homo polypropylene resin and about 20 to about 60 wt% of the block polypropylene resin.

[0015] 3. In the above 1 or 2 specific examples, the polypropylene resin may have a melt-flow index of about 5 to about 20 g / 10 min, measured under conditions of 230°C and 2.16 kg load, according to ASTM D1238.

[0016] 4. In the above 1 to 3 specific examples, the biomass-derived polyethylene resin may be manufactured from a biofuel extracted from biomass including at least one of sugarcane and sugar beet.

[0017] 5. In the above 1 to 4 specific examples, the biomass-derived polyethylene resin may have a melt-flow index of about 5 to about 30 g / 10 min, measured under conditions of 190°C and 2.16 kg load, according to ASTM D1238.

[0018] 6. In the above 1 to 5 specific examples, the styrene-ethylene-butylene-styrene copolymer may have a melt-flow index of about 5 to about 25 g / 10 min, measured under conditions of 230°C and 2.16 kg load, according to ASTM D1238.

[0019] 7. In the above 1 to 6 specific examples, the siloxane compound may include at least one of polydimethylsiloxane, polydiethylsiloxane, polydipropylsiloxane, polydibutylsiloxane, and polydiphenylsiloxane.

[0020] 8. In the above specific examples 1 to 7, the talc may have an average particle size of about 2.5 to about 5 μm.

[0021] 9. In the above 1 to 8 specific examples, the glass wool may have a fiber thickness of about 5 to about 10 μm as measured using a scanning electron microscope.

[0022] 10. In the above 1 to 9 specific examples, the polyolefin resin composition has a Charpy impact strength of about 18 kJ / m measured at 23°C according to ISO 180 standards. 2 It could be strange.

[0023] 11. In the above 1 to 10 specific examples, the polyolefin resin composition has a Charpy impact strength of about 4.7 kJ / m measured at -10°C according to ISO 180 standards. 2 It could be strange.

[0024] 12. In the above 1 to 11 specific examples, the polyolefin resin composition may have a flexural modulus of about 980 to about 2,500 MPa measured under 2 mm / min conditions according to ISO 178 standards.

[0025] 13. In the above 1 to 12 specific examples, the polyolefin resin composition has L before and after the scratch evaluation calculated according to the following formula 1. * The difference in values ​​can be less than about 1.3:

[0026] [Formula 1]

[0027] Before and after scratch evaluation L * Value difference (ΔL * ) = L * 1- L * 0

[0028] In the above equation 1, L * 0 is the initial (before scratch evaluation) L of the 100 mm × 100 mm × 2 mm sized injection molded specimen measured with a colorimeter. * is the value, L * 1 is a scratch evaluation after forming a grid pattern with a spacing of 2 mm and a length of 40 mm on the above specimen under the conditions of a load of 10 N and a speed of 1,000 mm / min, and measuring it with a colorimeter according to the Ericsson test method. * It's worth it.

[0029] 14. Another aspect of the present invention relates to a molded article. The molded article is characterized in that it is formed from a polyolefin resin composition according to any one of 1 to 13.

[0030] 15. In the above 14 specific examples, the molded product may be an interior material for an automobile or an exterior material for an automobile.

[0031]

[0032] The present invention has the effect of providing a polyolefin resin composition that is environmentally friendly by using biomaterials and has excellent impact resistance, rigidity, scratch resistance, and balance of physical properties thereof even when biomaterials are applied, and a molded article formed therefrom.

[0033]

[0034] Hereinafter, the present invention will be described in detail as follows.

[0035] A polyolefin resin composition according to the present invention comprises (A) a polypropylene resin; (B) a biomass-derived polyethylene resin; (C) a styrene-ethylene-butylene-styrene copolymer; (D) a siloxane-based compound; (E) talc; and (F) glass wool.

[0036] In this specification, “a to b” indicating a numerical range is defined as “≥a and ≤b”.

[0037]

[0038] (A) Polypropylene resin

[0039] According to one specific example of the present invention, a polypropylene resin can be applied together with a styrene-ethylene-butylene-styrene copolymer, a siloxane-based compound, talc, and glass wool when applying a biomaterial (biomass-derived polyethylene resin), thereby improving the impact resistance, rigidity, scratch resistance, and physical property balance thereof of a polyolefin resin composition, and may include a homo polypropylene resin and / or a block polypropylene resin. Here, the block polypropylene resin may be a block polypropylene resin composed of a homo polypropylene block and an ethylene-propylene copolymer block and / or a homo polyethylene block. For example, the polypropylene resin may be a mixture of a homo polypropylene resin and a block polypropylene resin.

[0040] In a specific example, the polypropylene resin may include about 40 to about 80 wt%, for example, about 45 to about 75 wt%, of the homopolypropylene resin and about 20 to about 60 wt%, for example, about 25 to about 55 wt%, of the block polypropylene resin. In this range, the rigidity, impact resistance, etc. of the polyolefin resin composition may be excellent.

[0041] In a specific example, the polypropylene resin may have a melt flow index (MI) of about 5 to about 20 g / 10 min, for example, about 10 to about 25 g / 10 min, measured under conditions of 230°C and a load of 2.16 kg according to ASTM D1238. Within this range, the mechanical properties, moldability, etc. of the polyolefin resin composition may be excellent.

[0042]

[0043] (B) Biomass-derived polyethylene resin

[0044] According to one specific example of the present invention, a biomass-derived polyethylene resin is applied to a polyolefin resin composition as a biomaterial (eco-friendly material) to impart eco-friendliness, and when applied to the polypropylene resin together with a styrene-ethylene-butylene-styrene copolymer, a siloxane-based compound, talc, and glass wool, the impact resistance, rigidity, scratch resistance, and the balance of these physical properties, etc., of the polyolefin resin composition can be improved.

[0045] In a specific example, the biomass-derived polyethylene resin may be a resin manufactured from biofuel (bioethanol) extracted from biomass including sugarcane and / or sugar beet. Unlike petroleum-based polyethylene, which produces polyethylene while emitting carbon dioxide, the biomass-derived polyethylene resin is produced using bioethanol using sugarcane as a raw material, and has the advantages of being renewable, producing significantly less carbon dioxide during the manufacturing process, and even utilizing carbon dioxide in the air.

[0046] In a specific example, the biomass-derived polyethylene resin may have a melt-flow index (MI) of about 5 to about 30 g / 10 min, for example, about 10 to about 25 g / 10 min, measured under conditions of 190°C and 2.16 kg load according to ASTM D1238. Within this range, the polyolefin resin composition may have excellent scratch resistance, moldability, etc.

[0047] In a specific example, the biomass-derived polyethylene resin may be included in an amount of about 3 to about 30 parts by weight, for example, about 5 to about 25 parts by weight, relative to about 100 parts by weight of the polypropylene resin. If the amount of the biomass-derived polyethylene resin is less than about 3 parts by weight relative to about 100 parts by weight of the polypropylene resin, there is a concern that the environmental friendliness, scratch resistance, etc. of the polyolefin resin composition may be reduced, and if it exceeds about 30 parts by weight, there is a concern that the rigidity, etc. of the polyolefin resin composition may be reduced.

[0048]

[0049] (C) styrene-ethylene-butylene-styrene copolymer

[0050] According to one specific example of the present invention, a styrene-ethylene-butylene-styrene copolymer can be applied to the polypropylene resin together with the biomass-derived polyethylene resin, a siloxane-based compound, talc, and glass wool to improve the eco-friendliness, impact resistance, rigidity, scratch resistance, and balance of these physical properties of the polyolefin resin composition, and a styrene-ethylene-butylene-styrene copolymer used in a typical thermoplastic elastomer composition can be used.

[0051] In a specific example, the styrene-ethylene-butylene-styrene copolymer may have a melt-flow index of about 5 to about 25 g / 10 min, for example, about 10 to about 20 g / 10 min, measured under conditions of 230°C and a load of 2.16 kg according to ASTM D1238. Within this range, the polyolefin resin composition may have excellent impact resistance, moldability, etc.

[0052] In a specific example, the styrene-ethylene-butylene-styrene copolymer may be included in an amount of about 7 to about 28 parts by weight, for example, about 10 to about 25 parts by weight, based on about 100 parts by weight of the polypropylene resin. If the content of the styrene-ethylene-butylene-styrene copolymer is less than about 7 parts by weight based on about 100 parts by weight of the polypropylene resin, there is a concern that the room temperature and low temperature impact resistance of the polyolefin resin composition may deteriorate, and if it exceeds about 28 parts by weight, there is a concern that the rigidity, moldability, etc. of the polyolefin resin composition may deteriorate.

[0053]

[0054] (D) Siloxane compound

[0055] According to one specific example of the present invention, a siloxane-based compound is applied to the polypropylene resin together with the biomass-derived polyethylene resin, the styrene-ethylene-butylene-styrene copolymer, talc, and glass wool, thereby improving the eco-friendliness, impact resistance, rigidity, scratch resistance, and balance of these physical properties of the polyolefin resin composition.

[0056] In a specific example, the siloxane compound may include a polysiloxane resin having a weight average molecular weight measured by GPC (gel permeation chromatography) of about 100,000 to about 1,000,000 g / mol, for example, about 300,000 to about 800,000 g / mol.

[0057] In specific examples, the siloxane-based compound (polysiloxane resin) may include polydimethylsiloxane, polydiethylsiloxane, polydipropylsiloxane, polydibutylsiloxane, polydiphenylsiloxane, combinations thereof, and the like.

[0058] In a specific example, the siloxane-based compound may be included in an amount of about 0.7 to about 9 parts by weight, for example, about 1 to about 7 parts by weight, relative to about 100 parts by weight of the polypropylene resin. If the content of the siloxane-based compound is less than about 0.7 parts by weight relative to about 100 parts by weight of the polypropylene resin, there is a concern that the scratch resistance, etc. of the polyolefin resin composition may be reduced, and if it exceeds about 9 parts by weight, there is a concern that the rigidity, appearance characteristics, etc. of the polyolefin resin composition may be reduced.

[0059]

[0060] (E) Talk

[0061] According to one specific example of the present invention, talc is applied to the polypropylene resin together with the biomass-derived polyethylene resin, the styrene-ethylene-butylene-styrene copolymer, the siloxane-based compound, and the glass wool, thereby improving the eco-friendliness, impact resistance, rigidity, scratch resistance, and the balance of these physical properties of the polyolefin resin composition. A plate-shaped talc used in a typical thermoplastic resin composition can be used.

[0062] In a specific example, the talc may have an average particle size of about 1.5 to about 10 μm, for example, about 2 to about 8 μm, for example, about 2.5 to about 5 μm, as measured by a particle size measuring device (Malvern Panalytical, Mastersizer 3000). Within this range, the rigidity, impact resistance, dimensional stability, etc. of the polyolefin resin composition may be excellent.

[0063] In a specific example, the talc may be included in an amount of about 3 to about 18 parts by weight, for example, about 5 to about 15 parts by weight, relative to about 100 parts by weight of the polypropylene resin. If the content of the talc is less than 3 parts by weight relative to about 100 parts by weight of the polypropylene resin, there is a concern that the rigidity, dimensional stability, etc. of the polyolefin resin composition may be reduced, and if it exceeds 18 parts by weight, there is a concern that the impact resistance and scratch resistance at room temperature and low temperature of the polyolefin resin composition may be reduced.

[0064]

[0065] (F) Glass wool

[0066] According to one specific example of the present invention, glass wool can be applied to the polypropylene resin together with the biomass-derived polyethylene resin, the styrene-ethylene-butylene-styrene copolymer, talc, and the siloxane-based compound, thereby improving the eco-friendliness, impact resistance, rigidity, scratch resistance, and the balance of these physical properties of the polyolefin resin composition.

[0067] In a specific example, the glass wool may have a fiber diameter of about 5 to about 10 μm as measured using a scanning electron microscope (SEM). Within this range, the polyolefin resin composition may exhibit excellent impact resistance, rigidity, scratch resistance, and the like.

[0068] In a specific example, the glass wool may be included in an amount of about 3 to about 18 parts by weight, for example, about 5 to about 15 parts by weight, relative to about 100 parts by weight of the polypropylene resin. If the content of the glass wool is less than about 3 parts by weight relative to about 100 parts by weight of the polypropylene resin, there is a concern that the rigidity, scratch resistance, etc. of the polyolefin resin composition may be reduced, and if it exceeds about 18 parts by weight, there is a concern that the impact resistance, etc. of the polyolefin resin composition may be reduced.

[0069] In a specific example, the weight ratio of the talc and the glass wool may be from about 1:0.3 to about 1:2, for example from about 1:0.5 to about 1:1.5. Within this range, the rigidity, impact resistance, scratch resistance, etc. of the polyolefin resin composition may be further improved.

[0070]

[0071] A polyolefin resin composition according to one embodiment of the present invention may further include additives included in conventional thermoplastic resin compositions. Examples of such additives include, but are not limited to, flame retardants, anti-dripping agents, antioxidants, release agents, nucleating agents, UV stabilizers, pigments, dyes, and mixtures thereof.

[0072] In a specific example, when the additive is used, the content may be about 0.001 to about 40 parts by weight, for example, about 0.1 to about 10 parts by weight, based on about 100 parts by weight of the polypropylene resin.

[0073]

[0074] A polyolefin resin composition according to one specific example of the present invention may be in the form of pellets obtained by mixing the above components and melt-extruding them at about 180 to about 320°C, for example, about 240 to about 300°C, using a conventional twin-screw extruder.

[0075] In a specific example, the polyolefin resin composition has a Charpy impact strength of about 18 kJ / m measured at 23°C according to ISO 180 standards. 2 Ideally, for example, about 20 to about 70 kJ / m 2 It could be.

[0076] In a specific example, the polyolefin resin composition has a Charpy impact strength of about 4.7 kJ / m measured at -10°C according to ISO 180 standards. 2 Ideally, for example, about 5 to about 25 kJ / m 2 It could be.

[0077] In a specific example, the polyolefin resin composition may have a flexural modulus of about 980 to about 2,500 MPa, for example, about 1,000 to about 2,200 MPa, measured under 2 mm / min conditions according to ISO 178 standards.

[0078] In a specific example, the polyolefin resin composition has L before and after the scratch evaluation calculated according to the following formula 1. * The difference in values ​​may be about 1.3 or less, for example, about 0.01 to about 1.2.

[0079] [Formula 1]

[0080] Before and after scratch evaluation L * Value difference (ΔL * ) = L * 1- L * 0

[0081] In the above equation 1, L * 0 is the initial (before scratch evaluation) L of the 100 mm × 100 mm × 2 mm sized injection molded specimen measured with a colorimeter. * is the value, L * 1 is a scratch evaluation after forming a grid pattern with a spacing of 2 mm and a length of 40 mm on the above specimen under the conditions of a load of 10 N and a speed of 1,000 mm / min, and measuring it with a colorimeter according to the Ericsson test method. * It's worth it.

[0082]

[0083] The molded article according to the present invention is formed from the polyolefin resin composition. The polyolefin 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. Such molding methods are well known to those skilled in the art to which the present invention pertains.

[0084] In a specific example, the molded product is environmentally friendly by using a biomaterial (biomass-derived polyethylene resin) and has excellent impact resistance, rigidity, scratch resistance, and balance of these properties, so it is useful as an automobile interior material, an automobile exterior material, etc., and can be used in the form of an unpainted product.

[0085]

[0086] Hereinafter, the present invention will be described in more detail through examples; however, these examples are for the purpose of explanation only and should not be construed as limiting the present invention.

[0087]

[0088] Example

[0089] Below, the specifications of each component used in the examples and comparative examples are as follows.

[0090] (A) Polypropylene resin

[0091] (A1) Homo-polypropylene resin (homo-PP, manufacturer: Daehan Yuhwa, product name: HJ-4012) was used.

[0092] (A2) Block polypropylene resin (B-PP, manufacturer: Daehan Yuhwa, product name: CB-5108) was used.

[0093] (B) Biomass-derived polyethylene resin

[0094] Biomass-derived polyethylene resin (Manufacturer: Braskem, Product name: SHA7260) was used.

[0095] (C) styrene-ethylene-butylene-styrene copolymer

[0096] Styrene-ethylene-butylene-styrene copolymer (SEBS, manufacturer: Kraton, product name: G1657 M) was used.

[0097] (D) Siloxane compound

[0098] A siloxane compound (manufacturer: Dupont, product name: MB50-001) containing a polysiloxane resin having a weight average molecular weight of approximately 500,000 g / mol was used.

[0099] (E) Talk

[0100] Talc (Manufacturer: Kotz, Product Name: KC-5000CA) was used.

[0101] (F) Glass wool

[0102] Glass wool (Manufacturer: Cowon, Product Name: GP50) was used.

[0103]

[0104] Examples 1 to 11 and Comparative Examples 1 to 10

[0105] Each of the above components was added in the amounts shown in Tables 1, 2, 3, and 4 below, and then extruded at about 250°C to produce pellets. The extrusion was performed using a twin-screw extruder with an L / D of 40 and a diameter of 75 mm. The manufactured pellets were dried at about 80°C for about 2 hours or more, and then injected into a 110-ton injection molding machine (molding temperature: about 230°C, mold temperature: about 40°C) to produce test pieces. The physical properties of the manufactured test pieces were evaluated using the following methods, and the results are shown in Tables 1, 2, 3, and 4 below.

[0106]

[0107] Method of measuring physical properties

[0108] (1) Impact resistance evaluation: Charpy impact strength (unit: kJ / m) at 23℃ and -10℃ according to ISO 180 standard 2 ) was measured.

[0109] (2) Stiffness evaluation: According to ISO 178 standard, flexural modulus (unit: MPa) was measured under 2 mm / min conditions.

[0110] (3) Scratch resistance evaluation: L before and after scratch evaluation calculated according to Equation 1 below * The difference in values ​​was measured.

[0111] [Formula 1]

[0112] Before and after scratch evaluation L * Value difference (ΔL * ) = L * 1- L * 0

[0113] In the above equation 1, L * 0 is the initial (before scratch evaluation) L of the 100 mm × 100 mm × 2 mm sized injection molded specimen measured with a colorimeter. * is the value, L * 1 is a scratch evaluation after forming a grid pattern with a spacing of 2 mm and a length of 40 mm on the above specimen under the conditions of a load of 10 N and a speed of 1,000 mm / min, and measuring it with a colorimeter according to the Ericsson test method. * It's worth it.

[0114]

[0115] Example 12345 (A) (% by weight) (A1) 6060606060 (A2) 4040404040 (B) (parts by weight) 510251010 (C) (parts by weight) 1515151025 (D) (parts by weight) 33333 (E) (parts by weight) 1010101010 (F) (parts by weight) 1010101010 Charpy impact strength (23℃) 3035402055 Charpy impact strength (-10℃) 666513 Flexural modulus 1,700 1,500 1,200 1,700 1,000 Before and after scratch evaluation L * Difference in values: 0.90.50.30.50.7

[0116] * Parts by weight: Parts by weight per 100 parts by weight of polypropylene resin (A)

[0117]

[0118] Example 67891011(A) (% by weight)(A1)606060606060(A2)404040404040(B) (parts by weight)101010101010(C) (parts by weight)151515151515(D) (parts by weight)173333(E) (parts by weight)10105151010(F) (parts by weight)10101010515Charpy impact strength (23℃)333740303533Charpy impact strength (-10℃)666.55.565Flexural modulus1,5001,4001,0002,0001,4001,700Before and after scratch evaluation L * Value difference 1.20.10.31.00.70.4

[0119] * Parts by weight: Parts by weight per 100 parts by weight of polypropylene resin (A)

[0120]

[0121] Comparative Example 12345(A) (Wt%)(A1)6060606060(A2)404040404040(B) (Parts by weight)135101010(C) (Parts by weight)151553015(D) (Parts by weight)33330.5(E) (Parts by weight)1010101010(F) (Parts by weight)1010101010Charpy impact strength (23℃)314356033Charpy impact strength (-10℃)662.5156Flexural modulus2,0008002,0005001,500Before and after scratch evaluation L * Value difference 1.50.10.50.82.5

[0122] * Parts by weight: Parts by weight per 100 parts by weight of polypropylene resin (A)

[0123]

[0124] Comparative Example 678910(A) (Wt%)(A1)6060606060(A2)4040404040(B) (Parts by weight)1010101010(C) (Parts by weight)1515151515(D) (Parts by weight)103333(E) (Parts by weight)101201010(F) (Parts by weight)101010120Charpy impact strength (23℃)3743153526Charpy impact strength (-10℃)683.57.54Flexural modulus9008002,5009001,800Scratch evaluation before and after L *Value difference 0.10.22.51.00.3

[0125] * Parts by weight: Parts by weight per 100 parts by weight of polypropylene resin (A)

[0126]

[0127] From the above results, the polyolefin resin composition of the present invention is environmentally friendly by using biomaterial (biomass-derived polyethylene resin), and has impact resistance (Charpy impact strength), rigidity (flexural modulus), and scratch resistance (L before and after scratch evaluation). * It can be seen that their physical property balance, etc., are all excellent.

[0128] On the other hand, in the case of Comparative Example 1, where the content of biomass-derived polyethylene resin is less than the range of the present invention, it can be seen that the eco-friendliness is lowered and scratch resistance, etc. are lowered due to the low content of biomaterial, and in the case of Comparative Example 2, where the content of biomass-derived polyethylene resin exceeds the range of the present invention, it can be seen that the rigidity, etc. are lowered. In the case of Comparative Example 3, where the content of styrene-ethylene-butylene-styrene copolymer is less than the range of the present invention, it can be seen that the impact resistance at room temperature and low temperature, etc. are lowered, and in the case of Comparative Example 4, where the content of styrene-ethylene-butylene-styrene copolymer exceeds the range of the present invention, it can be seen that the rigidity, etc. are lowered. In the case of Comparative Example 5, where the content of siloxane-based compound is less than the range of the present invention, it can be seen that the scratch resistance, etc. are lowered, and in the case of Comparative Example 6, where the content of siloxane-based compound exceeds the range of the present invention, it can be seen that the rigidity, etc. are lowered and it was confirmed that the appearance characteristics, etc. are lowered. In the case of Comparative Example 7, where the talc content is below the range of the present invention, it can be seen that the rigidity, etc. are reduced, and in the case of Comparative Example 8, where the talc content is above the range of the present invention, it can be seen that the room temperature and low temperature impact resistance, scratch resistance, etc. are reduced. In addition, in the case of Comparative Example 9, where the glass wool content is below the range of the present invention, it can be seen that the rigidity, scratch resistance, etc. are reduced, and in the case of Comparative Example 10, where the glass wool content is above the range of the present invention, it can be seen that the low temperature impact resistance, etc. are reduced.

[0129]

[0130] The present invention has been described with reference to exemplary embodiments. Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from its essential characteristics. Therefore, the disclosed embodiments should be considered illustrative rather than limiting. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. About 100 parts by weight of polypropylene resin including homo polypropylene resin and block polypropylene resin; About 3 to about 30 parts by weight of biomass-derived polyethylene resin; About 7 to about 28 parts by weight of a styrene-ethylene-butylene-styrene copolymer; About 0.7 to about 9 parts by weight of a siloxane compound; About 3 to about 18 parts by weight of talc; and A polyolefin resin composition comprising about 3 to about 18 parts by weight of glass wool.

2. A polyolefin resin composition according to claim 1, characterized in that the polypropylene resin comprises about 40 to about 80 wt% of the homo polypropylene resin and about 20 to about 60 wt% of the block polypropylene resin.

3. A polyolefin resin composition according to claim 1 or 2, characterized in that the polypropylene resin has a melt-flow index of about 5 to about 20 g / 10 min, measured under conditions of 230°C and 2.16 kg load according to ASTM D1238.

4. A polyolefin resin composition according to any one of claims 1 to 3, wherein the biomass-derived polyethylene resin is prepared from a biofuel extracted from biomass including at least one of sugarcane and sugar beet.

5. A polyolefin resin composition according to any one of claims 1 to 4, wherein the biomass-derived polyethylene resin has a melt-flow index of about 5 to about 30 g / 10 min, measured under conditions of 190°C and 2.16 kg load according to ASTM D1238.

6. A polyolefin resin composition according to any one of claims 1 to 5, wherein the styrene-ethylene-butylene-styrene copolymer has a melt-flow index of about 5 to about 25 g / 10 min, measured under conditions of 230°C and 2.16 kg load according to ASTM D1238.

7. A polyolefin resin composition according to any one of claims 1 to 6, wherein the siloxane-based compound comprises at least one of polydimethylsiloxane, polydiethylsiloxane, polydipropylsiloxane, polydibutylsiloxane, and polydiphenylsiloxane.

8. A polyolefin resin composition according to any one of claims 1 to 7, wherein the talc has an average particle size of about 2.5 to about 5 ㎛.

9. A polyolefin resin composition according to any one of claims 1 to 8, wherein the glass wool has a fiber thickness of about 5 to about 10 ㎛ as measured using a scanning electron microscope.

10. In any one of claims 1 to 9, the polyolefin resin composition has a Charpy impact strength of about 18 kJ / m measured at 23°C according to ISO 180 standards. 2 A polyolefin resin composition characterized by the above.

11. In any one of claims 1 to 10, the polyolefin resin composition has a Charpy impact strength of about 4.7 kJ / m measured at -10°C according to ISO 180 standards. 2 A polyolefin resin composition characterized by the above.

12. A polyolefin resin composition according to any one of claims 1 to 11, characterized in that the polyolefin resin composition has a flexural modulus of about 980 to about 2,500 MPa measured under 2 mm / min conditions according to ISO 178 standards.

13. In any one of the first to 12th clauses, the polyolefin resin composition has a scratch evaluation L before and after the evaluation calculated according to the following formula 1. * A polyolefin resin composition characterized in that the value difference is about 1.3 or less: [Formula 1] Before and after scratch evaluation L * Value difference (ΔL * ) = L * 1- L * 0 In the above equation 1, L * 0 is the initial (before scratch evaluation) L of the 100 mm × 100 mm × 2 mm sized injection molded specimen measured with a colorimeter. * is the value, L * 1 is a scratch evaluation after forming a grid pattern with a spacing of 2 mm and a length of 40 mm on the above specimen under the conditions of a load of 10 N and a speed of 1,000 mm / min, and measuring it with a colorimeter according to the Ericsson test method. * It's worth it.

14. A molded product characterized by being formed from a polyolefin resin composition according to any one of claims 1 to 13.

15. A molded product according to claim 14, characterized in that the molded product is an automobile interior material or automobile exterior material.