KR20040002075A - A polyolefin resin composition for an automobile outerior - Google Patents

A polyolefin resin composition for an automobile outerior Download PDF

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KR20040002075A
KR20040002075A KR1020020037434A KR20020037434A KR20040002075A KR 20040002075 A KR20040002075 A KR 20040002075A KR 1020020037434 A KR1020020037434 A KR 1020020037434A KR 20020037434 A KR20020037434 A KR 20020037434A KR 20040002075 A KR20040002075 A KR 20040002075A
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ethylene
weight
resin composition
propylene
composite resin
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KR100475870B1 (en
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박봉현
김정신
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현대자동차주식회사
현대엔지니어링플라스틱 주식회사
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815Copolymers of ethene with aliphatic 1-olefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/0812Aluminium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/005Additives being defined by their particle size in general
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Abstract

PURPOSE: Provided is a polyolefin based composite resin composition, which has excellent rigidity, heat resistance, impact resistance and flexibility to reduce the thickness of the injection molded product. CONSTITUTION: The polyolefin based composite resin composition is characterized by comprising: 40-70 wt% of a crystalline ethylene-propylene copolymer; 5-15 wt% of an ethylene-propylene-diene rubber obtained by using a metallocene catalyst; 10-30 wt% of an ethylene-alpha-olefin copolymer; 10-20 wt% of an inorganic reinforcing material having the average particle size or 1-5 micrometers; and 0.1-2.0 wt% of an aluminum flake having the average particle size of 10-100 micrometers.

Description

자동차 외장재용 폴리올레핀계 복합수지 조성물{A polyolefin resin composition for an automobile outerior}A polyolefin resin composition for an automobile outerior

본 발명은 폴리올레핀계 복합수지 조성물에 관한 것으로서, 특히 강성 및 유동성이 우수하여 성형품을 경량화 할 수 있고, 화려한 몰드 인 칼라 성형품을 제조할 수 있어서 자동차 외장재용 부품의 재료로 적합한 복합수지 조성물에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyolefin composite resin composition, and more particularly, to a composite resin composition which is excellent in rigidity and fluidity, which can reduce the weight of a molded article and produce a colorful mold-in-color molded article, which is suitable as a material for automotive exterior parts. .

일반적으로 자동차 범퍼용 수지 조성물은 결정성의 에틸렌-프로필렌 공중합체를 기본으로 하여 충격 보강재인 에틸렌-프로필렌 고무나 에틸렌-α-올레핀 공중합체 등을 포함하고, 여기에 강성을 보강하기 위해 무기 충진재를 포함한다. 그래서 기본적으로 폴리프로필렌을 매트릭스로 하여 고무와 무기 충진제가 분산되어 있으며, 가공성과 상용성을 향상시키기 위해 각종 첨가제가 첨가되기도 한다. 이와 관련된 특허로는 USP 5484824호, USP 5045589호, USP 4439573호, EP 476926호 등이 있다.Generally, the resin composition for automobile bumpers includes ethylene-propylene rubber or ethylene-α-olefin copolymer, which is an impact reinforcing material based on a crystalline ethylene-propylene copolymer, and includes an inorganic filler to reinforce rigidity. do. Therefore, rubber and inorganic fillers are basically dispersed using polypropylene as a matrix, and various additives may be added to improve processability and compatibility. Related patents include USP 5484824, USP 5045589, USP 4439573, EP 476926, and the like.

그러나 이러한 종래의 복합수지 조성물들은 유동성이 부족하여 성형품의 충진을 어렵게 하고, 또한 강성이 부족하여 성형품이 변형을 쉽게 일으킬 수 있기 때문에 점점 두께가 얇아지고 있는 범퍼 등 자동자 외장용품의 요구를 충족시키기에는 부족한 실정이었고, 특히 표면경도가 낮아서 몰드 인 칼라 범퍼에 적용하기에는 만족스럽지 못하였다.However, these conventional composite resin compositions are difficult to fill the molded article due to the lack of fluidity, and also because the lack of rigidity can easily deform the molded article to meet the needs of automotive exterior goods, such as bumper is getting thinner In particular, the surface hardness was low and was not satisfactory to be applied to the mold in collar bumper.

최근 자동차 외장재 중 범퍼는 폴리프로필렌을 기본으로 하는 복합수지 조성물로서 점점 디자인이 다양해지고 크기 또한 대형화되는 반면, 자동차의 경량화 요구에 따라 두께는 점차 얇아지는 추세에 있다. 따라서 자동차 범퍼용 수지 조성물에 대해 요구되는 특성 또한 우수한 유동성(성형성), 기계적 강성, 내열성, 내충격성이 요구되고 있다.Recently, bumper of the automobile exterior material is a polypropylene-based composite resin composition is increasingly diversified in design and larger in size, while the thickness is gradually becoming thinner in accordance with the light weight of the vehicle. Therefore, the characteristics required for the resin composition for automobile bumpers are also required to have excellent fluidity (molding), mechanical rigidity, heat resistance, and impact resistance.

또한 종래에 사용되고 있는 몰드 인 칼라 범퍼의 경우, 단색 칼라를 사용하기 때문에 성형품의 외관이 단조로워 보이며, 표면 경도 및 성형성이 만족스럽지 못하여 이에 대한 신제품의 개발이 요구되고 있다.In addition, in the case of a mold-in collar bumper used in the related art, since a solid color is used, the appearance of the molded article seems to be monotonous, and surface hardness and moldability are not satisfactory, and development of a new product is required.

본 발명의 목적은 에틸렌-프로필렌 공중합체를 사용하여 우수한 강성, 내열성, 내충격성의 특성을 지니면서 유동성이 우수하여 사출 성형품의 두께를 줄여 경량화 할 수 있고, 특히, 알루미늄 플레이크를 사용하여 표면 경도 및 성형품 외관을 크게 개선 하므로서 몰드 인 칼라의 성형품에도 적용할 수 있는 폴리올레핀계 복합수지 조성물을 제공하는데 있다.An object of the present invention is to use an ethylene-propylene copolymer to have excellent stiffness, heat resistance, impact resistance characteristics and excellent fluidity to reduce the thickness of the injection molded product, in particular, the surface hardness and molded article using aluminum flakes The present invention provides a polyolefin composite resin composition which can be applied to molded articles of mold in color while greatly improving the appearance.

본 발명은 결정성 에틸렌-프로필렌 공중합체 40 ∼ 70 중량%, 메탈로센 촉매를 사용하여 제조된 에틸렌-프로필렌-다이엔 고무 5 ∼ 15 중량%, 에틸렌-α-올레핀 공중합체 10 ∼ 30 중량%, 평균 입자 크기가 1 ∼ 5 ㎛인 무기질 보강재 10 ∼ 20 중량%, 평균 입자 크기가 10 ∼ 100 ㎛인 알루미늄 플레이크 0.1 ∼ 2.0 중량%를 포함하는 폴리올레핀계 복합 수지 조성물을 특징으로 한다.The present invention is 40 to 70% by weight crystalline ethylene-propylene copolymer, 5 to 15% by weight ethylene-propylene-diene rubber prepared using a metallocene catalyst, 10 to 30% by weight ethylene-α-olefin copolymer And a polyolefin-based composite resin composition comprising 10 to 20% by weight of an inorganic reinforcing material having an average particle size of 1 to 5 µm and 0.1 to 2.0% by weight of an aluminum flake having an average particle size of 10 to 100 µm.

이하, 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.

본 발명의 폴리올레핀계 복합수지 조성물은 (A) 용융 흐름 지수가 40 ∼ 120 g/10분( 230℃, 2.16 kg )이며, 에틸렌-프로필렌 고무의 함량이 0.5 ∼ 15 중량% 인 결정성 에틸렌-프로필렌 공중합체 40 ~ 70 중량%, (B) 125 ℃ 에서의 무니점도가 10 ∼ 50 ML 1+4 인 에틸렌-프로필렌-다이엔 고무 5 ∼ 15 중량%, (C) 121 ℃ 에서의 무니점도가 1 ∼ 35 ML 1+4인 에틸렌-α-올레핀 공중합체 고무( 옥텐 : 20 ∼ 50 중량% ) 10 ∼ 30 중량%, (D) 평균 입자 크기가 1 ∼ 5 ㎛ 인 무기질 보강재 10 ∼ 20 중량%, (E) 평균 입자 크기가 10 ∼ 100 ㎛ 인 알루미늄 플레이크 0.1 ∼ 2.0 중량% 를 포함하며, 이외에도 성형품의 성능 및 가공상의 특성을 향상시키기 위하여 산화방지제, 자외선 흡수제, 광 안정제, 안료, 분산제, 핵제, 가공윤활제, 커플링제 등의 첨가제을 포함할 수 있다.Polyolefin-based composite resin composition of the present invention (A) crystalline ethylene-propylene having a melt flow index of 40 to 120 g / 10 minutes (230 ℃, 2.16 kg), the content of ethylene-propylene rubber 0.5 to 15% by weight 40 to 70 wt% of the copolymer, (B) 5 to 15 wt% of the ethylene-propylene-diene rubber having a Mooney viscosity at 125 ° C of 10 to 50 ML 1 + 4, and (C) a Mooney viscosity at 121 ° C of 1 10 to 30% by weight of an ethylene-α-olefin copolymer rubber (octene: 20 to 50% by weight) of 35 ML 1 + 4, (D) 10 to 20% by weight of an inorganic reinforcing material having an average particle size of 1 to 5 μm, (E) 0.1 to 2.0% by weight of aluminum flakes having an average particle size of 10 to 100 µm, and in addition, antioxidants, ultraviolet absorbers, light stabilizers, pigments, dispersants, nucleating agents, Additives such as processing lubricants and coupling agents may be included.

성분 (A)인 결정성 에틸렌-프로필렌 공중합체는 에틸렌 모노머의 함량이 1 ∼ 10 중량%, 바람직하게는 4 ∼ 7 중량%이고, 중량 평균 분자량은 100,000 ∼ 250,000 g/mol이며, 공중합체 중 프로필렌의 아이소택틱 지수는 C13-NMR 측정법으로 96 %이상, 바람직하게는 97 %이상이고, 하중 2.16 kg 및 230 ℃의 온도에서 용융흐름지수가 40 ∼ 120 g/10분, 바람직하게는 60 ∼ 100 g/10분인 것을 사용한다.The crystalline ethylene-propylene copolymer as component (A) has an ethylene monomer content of 1 to 10% by weight, preferably 4 to 7% by weight, a weight average molecular weight of 100,000 to 250,000 g / mol, and propylene in the copolymer. The isotactic index of is at least 96%, preferably at least 97% by C13-NMR measurement, with a melt flow index of 40 to 120 g / 10 min, preferably 60 to 100 at a temperature of 2.16 kg and a temperature of 230 ° C. Use g / 10 min.

본 발명에서, 상기 결정성 에틸렌-프로필렌 공중합체의 아이소택틱 지수가 96 % 미만이면 성형품의 강성 및 표면경도가 만족스럽지 않고, 용융흐름지수가 60 g/10분 미만이면, 유동성 및 성형성이 저하되며, 100 g/10분 이상이면, 성형품의 내충격성이 현격하게 저하된다.In the present invention, when the isotactic index of the crystalline ethylene-propylene copolymer is less than 96%, the rigidity and surface hardness of the molded article are not satisfactory, and when the melt flow index is less than 60 g / 10 minutes, the fluidity and formability are If it falls, and it is 100 g / 10min or more, the impact resistance of a molded article will fall remarkably.

성분 (B)인 에틸렌-프로필렌-다이엔 고무는 메탈로센계 촉매하에서 3원 공중합된 하이드로 카본 고무로서, 프로필렌의 함량이 20 ∼ 40 중량%, 무니점도가 125 ℃에서 10 ∼ 50 ML1+4이고, 5-에틸다이엔-2-노보렌 함량이 0.1 ∼ 2.0 중량%인 것을 사용한다. 메탈로센계 촉매로 공중합된 에틸렌-프로필렌-다이엔 고무는 종래의 에틸렌-프로필렌-다이엔 고무와는 달리 보다 균일한 물성을 지니고 있어서 복합 수지 조성물의 최종 물성을 일정하게 유지시켜 준다.Ethylene-propylene-diene rubber as component (B) is a ternary copolymerized hydrocarbon rubber under a metallocene catalyst, having a propylene content of 20 to 40% by weight and a Mooney viscosity of 10 to 50 ML1 + 4 at 125 ° C. And 5-ethyldiene-2-norborene content is used with 0.1-2.0 weight%. The ethylene-propylene-diene rubber copolymerized with the metallocene catalyst has a more uniform physical property unlike the conventional ethylene-propylene-diene rubber, thereby maintaining the final physical properties of the composite resin composition.

성분 (C)인 에틸렌-α-올레핀 공중합체는 메탈로센계 촉매하에서 공중합된 고무성분으로서, 옥텐 함량이 20 ∼ 50 중량%, 무니점도가 121 ℃에서 1 ∼ 35 ML1+4이며, 유리전이온도는 -50 ∼ -65℃인 것을 사용한다. 유리전이 온도가 -50℃ 을 초과할 경우 저온충격성이 저하하게 되며, -65℃ 미만일 경우 강성이 저하된다.The ethylene-α-olefin copolymer as component (C) is a rubber component copolymerized under a metallocene catalyst, having an octene content of 20 to 50% by weight, a Mooney viscosity of 1 to 35 ML1 + 4 at 121 ° C, and a glass transition temperature. Uses the thing of -50-65 degreeC. If the glass transition temperature exceeds -50 ℃ low temperature impact resistance is lowered, if less than -65 ℃ the rigidity is lowered.

성분 (D)인 무기질 보강재는 강성 보강을 위해 첨가되는 것으로서, 사용하였고, 평균 입자 크기가 1 ∼ 5 ㎛인 탈크 10 ∼ 20 중량%를 사용한다.The inorganic reinforcing material as component (D) was used as added for rigid reinforcement, and 10 to 20% by weight of talc having an average particle size of 1 to 5 μm was used.

성분 (E)는 별도의 도장 처리 과정을 거치지 않더라도 성형품의 외관을 화려하게하기 위해서 알루미늄 플레이크를 사용한다. 이 때 사용되는 알루미늄 플레이크는 평균 입자 크기가 10 ∼ 100㎛이며, 알루미늄 피그먼트의 순도는 99.7%이상인 것을 사용하되, 상기 성분 (A), (B) 및 (C)와의 상용성을 좋게 하기 위해서 폴리프로필렌 또는 폴리에틸렌을 캐리어로 마스터 배치를 만든 알루미늄 피그먼트를 사용한다.Component (E) uses aluminum flakes to make the appearance of the molded article brilliant even without a separate coating process. In this case, the aluminum flakes used are those having an average particle size of 10 to 100 µm and an aluminum pigment having a purity of 99.7% or more, in order to improve compatibility with the components (A), (B) and (C). Use an aluminum pigment made from a polypropylene or polyethylene carrier as the master batch.

본 발명에서 알루미늄 플레이크의 평균 입자 크기가 10 ㎛ 미만이면, 알루미늄 피그먼트의 표면적이 너무 낮아 성형품의 표면으로 이행이 되지 않으며, 평균 입자 크기가 100㎛ 를 초과하면, 성형품의 외관은 화려하나 웰드라인 및 내충격성이 저하되고, 또한 폴리프로필렌 또는 폴리에틸렌을 캐리어로 마스터배치를 만들지 않을 경우, 사출 성형시 성형품에 알루미늄 피그먼트가 몰리는 현상이 발생된다.In the present invention, if the average particle size of the aluminum flakes is less than 10 μm, the surface area of the aluminum pigment is too low to transfer to the surface of the molded article, and if the average particle size exceeds 100 μm, the appearance of the molded article is gorgeous but the weld line And when the impact resistance is lowered and the master batch is not made of polypropylene or polyethylene as a carrier, a phenomenon in which aluminum pigment is collected in a molded article during injection molding occurs.

본 발명의 수지 조성물은 상기 5가지 주요성분 이외에도 성형품의 성능 및 가공상의 특성을 향상시키기 위하여 1,2차 산화방지제, 자외선 흡수제, 광 안정제, 안료, 분산제, 핵제, 가공윤활제, 커플링제 등의 첨가제가 바람직하게 첨가될 수 있다.The resin composition of the present invention, in addition to the above five main components, additives such as primary and secondary antioxidants, ultraviolet absorbers, light stabilizers, pigments, dispersants, nucleating agents, processing lubricants, coupling agents, etc. in order to improve the performance and processing characteristics of the molded article. May be preferably added.

또한, 본 발명의 수지 조성물은 상기 구성성분들을 슈퍼믹서에서 균일하게 혼합한 후, 2축 압출기를 사용하여 180 ∼ 220 ℃ 온도에서 회전수 100 ∼ 300 RPM의 조건으로 제조할 수 있다.In addition, the resin composition of the present invention may be prepared under a condition of the rotation speed 100 ~ 300 RPM at 180 ~ 220 ℃ temperature using a twin screw extruder after uniformly mixing the above components in a super mixer.

이하, 본 발명을 실시예에 의거하여 더욱 구체적으로 설명하겠는바, 본 발명이 다음 실시예에 의하여 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited by the following Examples.

실시예Example

다음 표 1 내지 표 4에 나타낸 원료를 사용하여 다음 표 5의 조성비율에 따라 복합수지 조성물을 제조하고, 사출 성형기( 모델 : SPF-150 , 현대정공)를 사용하여 상기 수지 조성물을 실린더 온도 220℃ 및 금형온도 50℃ 에서 사출 성형하여 시험편을 제조하였다.Next, a composite resin composition was prepared according to the composition ratio of Table 5 using the raw materials shown in Tables 1 to 4, and the resin composition was prepared by using an injection molding machine (Model: SPF-150, Hyundai Hole) at a cylinder temperature of 220 ° C. And injection molding at a mold temperature of 50 ℃ to prepare a test piece.

실시예 1 ~ 9에 따라 제조된 시험편에 대하여 다음과 같은 방법을 물성을 측정하고, 그 결과를 다음 표 5 에 수록 하였다.Physical properties of the test specimens prepared according to Examples 1 to 9 were measured as follows, and the results are listed in Table 5 below.

상기 표 5에 나타낸 물성에 대한 시험방법은 다음과 같다.Test methods for the physical properties shown in Table 5 are as follows.

< 시험 방법 ><Test method>

(1) 용융흐름지수(MFR) : ASTM D1238( 230℃, 2160g ) 규정에 따라 측정하였다.(1) Melt Flow Index (MFR): Measured according to ASTM D1238 (230 ° C, 2160g).

(2) 인장강도 : ASTM D638( TYPE I, 속도 : 50mm/min ) 규정에 따라 측정하였다.(2) Tensile strength: measured according to ASTM D638 (TYPE I, speed: 50mm / min).

(3) 굴곡탄성률 : ASTM D790( 속도 : 10mm/min ) 규정에 따라 측정하였다.(3) Flexural modulus: measured according to ASTM D790 (Speed: 10mm / min).

(4) 아이조드 충격강도 : ASTM D256( 23℃, -30℃ ) 규정에 따라 측정하였다.(4) Izod impact strength was measured according to ASTM D256 (23 ° C, -30 ° C).

(5) 열변형온도 : ASTM D648( 하중 : 4.16kg ) 규정에 따라 측정하였다.(5) Heat deflection temperature was measured according to ASTM D648 (load: 4.16kg).

(6) 로크웨경도 : ASTM D785 규정에 따라 측정하였다.(6) Rockwe hardness: measured according to ASTM D785.

(7) 흐름성( 성형성 ) : 수지의 흐름성을 측정하기 위해 두께 4mm, 폭 10mm, 길이 1500mm의 나선형 모양을 하고 있는 금형으로 220℃의 온도로 사출 성형하여 수지의 유동 거리를 측정하였다.(7) Flowability (mouldability): In order to measure the flowability of the resin, the flow distance of the resin was measured by injection molding at a temperature of 220 ° C. with a mold having a spiral shape having a thickness of 4 mm, a width of 10 mm, and a length of 1500 mm.

(8) 외관 :(8) Appearance:

◎ 알루미늄 피그먼트가 성형품 표면에 전체적으로 고르게 분포되어 있으며, 알루미늄 피그먼트가 표면에 잘 이행되어 표면이 화려하며, 웰드라인 발생이 적음.◎ The aluminum pigment is distributed evenly on the surface of the molded product, the aluminum pigment is transferred to the surface well and the surface is gorgeous, and there are few weld lines.

○ 알루미늄 피그먼트가 성형품 표면에 전체적으로 고르게 분포되어 있으며, 알루미늄 피그먼트가 표면에 잘 이행되어 표면이 화려하며, 웰드라인 발생이 심함.○ The aluminum pigment is distributed evenly on the surface of the molded product, the aluminum pigment is well transferred to the surface, the surface is gorgeous, and the weld line is severely generated.

△ 알루미늄 피그먼트가 성형품 표면에 고르게 분포되지 않거나, 알루미늄 피그먼트가 표면에 이행이 잘 안됨, 웰드라인 발생이 적음.△ The aluminum pigment is not evenly distributed on the surface of the molded product, or the aluminum pigment is not well transferred to the surface, the weld line is less generated.

× 알루미늄 피그먼트가 성형품 표면에 고르게 분포되지 않거나, 알루미늄피그먼트가 표면에 이행이 잘 안됨, 웰드라인 발생이 심함.× Aluminum pigment is not evenly distributed on the surface of molded part, or aluminum pigment is not well transferred to the surface.

본 발명의 폴리올레핀계 복합수지 조성물은 성형품의 강성 및 유동성(성형성)을 향상시켜 주고, 두께를 줄여 제품을 경량화 하며, 알루미늄 플레이크를 사용하여 성형품 외관을 화려하게 하므로서 몰드 인 칼라의 성형품에 적용할 수 있어서 도장 처리 과정에 소요되는 비용을 절감하는 효과를 얻을 수 있다. 따라서 자동차 외장재, 특히 범퍼의 경량화와 비용절감에 크게 기여할 수 있을 것으로 기대된다.The polyolefin composite resin composition of the present invention improves the rigidity and flowability (molding) of the molded article, reduces the thickness to reduce the weight of the product, and can be applied to the molded article of the mold in color by using aluminum flakes to enhance the appearance of the molded article. It is possible to obtain the effect of reducing the cost of the coating process. Therefore, it is expected to contribute greatly to the weight reduction and cost reduction of automobile exterior materials, especially bumpers.

Claims (6)

결정성 에틸렌-프로필렌 공중합체 40 ∼ 70중량%, 메탈로센 촉매를 사용하여 제조된 에틸렌-프로필렌-다이엔 고무 5 ∼ 15중량%, 에틸렌-α-올레핀 공중합체 10 ∼ 30중량%, 평균 입자 크기가 1 ∼ 5 ㎛인 무기질 보강재 10 ∼ 20중량%, 평균 입자 크기가 10 ∼ 100 ㎛인 알루미늄 플레이크 0.1 ∼ 2.0중량% 를 포함하는 것을 특징으로 폴리올레핀계 복합수지 조성물.40 to 70% by weight of crystalline ethylene-propylene copolymer, 5 to 15% by weight of ethylene-propylene-diene rubber prepared using metallocene catalyst, 10 to 30% by weight of ethylene-α-olefin copolymer, average particle 10 to 20% by weight of an inorganic reinforcing material having a size of 1 to 5 μm, and 0.1 to 2.0% by weight of an aluminum flake having an average particle size of 10 to 100 μm. 제 1 항에 있어서, 결정성 에틸렌-프로필렌 공중합체는 용융 흐름 지수가 60 ∼ 100g/10분( 230℃, 2.16kg )이며, 에틸렌-프로필렌 고무의 함량이 0.5 ∼ 15중량%인 것을 특징으로 하는 복합수지 조성물.The crystalline ethylene-propylene copolymer has a melt flow index of 60 to 100 g / 10 minutes (230 ° C., 2.16 kg), and the content of ethylene-propylene rubber is 0.5 to 15% by weight. Composite resin composition. 제 1 항에 있어서, 에틸렌-프로필렌-다이엔 고무는 프로필렌의 함량이 20 ∼ 40중량%, 무니점도가 125℃에서 10 ∼ 50 ML 1+4이고, 5-에틸다이엔-2-노보렌의 함량이 0.1 ∼ 2.0중량%인 것을 특징으로 하는 복합수지 조성물.The ethylene-propylene-diene rubber according to claim 1, wherein the ethylene-propylene-diene rubber has a propylene content of 20 to 40% by weight, a Mooney viscosity of 10 to 50 ML 1 + 4 at 125 ° C, Composite resin composition, characterized in that the content is 0.1 to 2.0% by weight. 제 1 항에 있어서, 에틸렌-α-올레핀 공중합체는 옥텐의 함량이 20 ∼ 50중량%, 무니점도가 121 ℃에서 1 ∼ 35 ML 1+4이며, 유리전이온도는 -50 ∼ -65℃인 것을 특징으로 하는 복합수지 조성물.The ethylene-α-olefin copolymer according to claim 1, wherein the ethylene-α-olefin copolymer has an octene content of 20 to 50% by weight, a Mooney viscosity of 1 to 35 ML 1 + 4 at 121 ° C, and a glass transition temperature of -50 to -65 ° C. Composite resin composition, characterized in that. 제 1 항에 있어서, 알루미늄 플레이크는 알루미늄 피그먼트의 순도가 99.7% 이상인 것을 특징으로 하는 복합수지 조성물.The composite resin composition of claim 1, wherein the aluminum flakes have a purity of at least 99.7%. 상기 청구항 1 의 폴리올레핀계 복합수지 조성물을 사용하여 몰드 인 칼라로 제조된 자동차 외장재용 부품.Automobile exterior parts manufactured in a mold in color using the polyolefin composite resin composition of claim 1.
KR10-2002-0037434A 2002-06-29 2002-06-29 A polyolefin resin composition for an automobile outerior KR100475870B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100657359B1 (en) * 2005-02-28 2006-12-19 삼성토탈 주식회사 Excellent anti-scratch characteristic polypropylene resin composition
KR100714194B1 (en) 2006-02-09 2007-05-02 삼성토탈 주식회사 High impact resistant and easy processing polypropylene compositions for automotive exterior part
KR100855332B1 (en) * 2007-09-06 2008-09-04 현대이피 주식회사 Polypropylene resin composition
KR20200024432A (en) 2018-08-28 2020-03-09 전남대학교산학협력단 Method for manufacturing high purity phosphate from low purity phosphoric acid solution

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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JP3354233B2 (en) * 1993-10-20 2002-12-09 日産自動車株式会社 Olefin resin composition for automotive exterior parts
EP0769525B1 (en) * 1995-10-09 2002-01-30 Ube Industries, Ltd. Polypropylene resin composition for exterior parts of automobile
KR100199282B1 (en) * 1997-06-14 1999-06-15 이영일 Recyclable automobile applications
KR100353066B1 (en) * 1999-12-31 2002-09-18 현대자동차주식회사 Thermoplastic resin composition
KR100334162B1 (en) * 2000-05-31 2002-04-25 유현식 A polypropylene resin composition having excellent metallic luster

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100657359B1 (en) * 2005-02-28 2006-12-19 삼성토탈 주식회사 Excellent anti-scratch characteristic polypropylene resin composition
KR100714194B1 (en) 2006-02-09 2007-05-02 삼성토탈 주식회사 High impact resistant and easy processing polypropylene compositions for automotive exterior part
KR100855332B1 (en) * 2007-09-06 2008-09-04 현대이피 주식회사 Polypropylene resin composition
KR20200024432A (en) 2018-08-28 2020-03-09 전남대학교산학협력단 Method for manufacturing high purity phosphate from low purity phosphoric acid solution

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