KR101987575B1 - Non-paint metallic Polypropylene resin composite having whitening resistance - Google Patents
Non-paint metallic Polypropylene resin composite having whitening resistance Download PDFInfo
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Abstract
Description
본 발명은 MIC공법에 적용이 가능하면서 외부 충격에 의한 백화 현상을 최소로 하는 폴리프로필렌 수지 조성물에 관한 것이다. 도장을 하지 않으므로 부품 기재가 그대로 드러나게 되어 사출 및 후가공, 운반 과정에서 충격에 의해 표면에 백화 현상이 발생하기 쉬운데, 부품 성형성과 기계적 물성에 차이가 없으면서 표면의 내백화 특성을 부여한 수지 조성물 및 그 성형품에 관한 것이다. The present invention relates to a polypropylene resin composition which can be applied to a MIC process and minimizes whitening due to an external impact. Since the part substrate is exposed as it is not coated, it is easy to cause whitening on the surface due to impact during injection, post-processing and transportation. Resin composition and molded article thereof which imparts surface whitening characteristics without any difference in component formability and mechanical properties .
MIC(molded in color) 공법을 이용한 무도장용 메탈릭 폴리프로필렌 수지 조성물은 도장(under coating) 공정의 삭제로, 과다 용매 사용에 의한 환경 문제 및 비용 상승 문제가 없어 도장 부품의 대체품으로써 소재 개발이 시도되고 있으며 적용 대상 부품이 점차 확대될 전망이다.The metallized polypropylene resin composition for unpainted metal using the MIC (molded in color) method has a problem of environmental problems due to the use of an excessive solvent due to the elimination of the undercoating process and development of a material as a substitute for the painted parts is attempted The number of parts to be applied is expected to expand gradually.
MIC 공법에는 폴리카보네이트(PC), 폴리메틸메타크릴레이트(PMMA) 적용되고 있는데, 비교적 저가이면서 비중이 낮은 폴리프로필렌 수지를 이용하는 방안이 시도되고 있으나 표면 경도가 낮고 외부 충격에 의한 표면 백화 현상에 취약하여 실제 적용하기에 한계가 있다. 플라스틱 소재의 부품 사출 후 구멍(hole)을 내는 후가공 시 충격 부위 주변에 백화 현상이 나타나게 되어 품질 문제를 야기한다. Polycarbonate (PC) and polymethyl methacrylate (PMMA) have been applied to the MIC method. However, attempts have been made to use a relatively low-cost and low-specific-gravity polypropylene resin, but the surface hardness is low and is susceptible to surface whitening due to external impact There is a limit to practical application. When plastic parts are injected after the parts are injected, it causes white matter phenomenon around the impact area, which causes quality problems.
MIC 소재용 폴리프로필렌 수지 조성물은 도장용과는 달리 외관이 밝은 색을 띠며 광택이 높아 사출 성형성이 우수해야 한다. 흐름자국(Flow mark, tiger mark)과 웰드라인(weld line) 등의 표면 품질 저하 인자가 육안으로 쉽게 확인되기 때문이며 사출 성형이 잘 되었더라도 부품의 후가공 및 이동, 보관 과정에서 백화 현상이 발생할 수 있으므로 소재적 측면에서 개선점을 모색하는 것이 중요하다.The polypropylene resin composition for MIC materials has a bright appearance and a high gloss so that the injection moldability should be excellent. This is because the surface quality deterioration factors such as flow mark (tiger mark) and weld line are easily visible to the naked eye. Even if the injection molding is performed well, whitening may occur during post-processing, It is important to look for improvements on the enemy side.
대한민국 등록특허 10-2016-0060502는 전기전자제품 및 자동차 내·외장 부품에 기계적 물성을 유지하면서도 고광택, 내스크래치 특성이 향상된 무도장용 폴리프로필렌 수지 조성물로 제조하였으나 충격에 의한 내백화 특성은 미미하여 최종 제품의 불량률이 높다.Korean Patent No. 10-2016-0060502 discloses a polypropylene resin composition for unpainted use which is improved in high gloss and scratch resistance while maintaining mechanical properties in electrical and electronic products and interior and exterior parts of automobiles, Is high.
본 발명은 무도장용 메탈릭 소재이면서 내백화 특성이 우수한 폴리프로필렌 수지 조성물에 관한 것으로, 구체적으로는 폴리프로필렌 수지 본연의 기계적 물성을 유지하면서도 내백화 특성이 향상된 무도장용 메탈릭 폴리프로필렌 수지 조성물이다.The present invention relates to a polypropylene resin composition which is a metallic material for unpainted parts and has excellent anti-whitening properties, and more specifically to a metallic unpolymerized polypropylene resin composition having improved whitening properties while maintaining the original mechanical properties of the polypropylene resin.
상기 폴리프로필렌 수지 조성물을 MIC(molded in color) 공법으로 성형한 자동차 내·외장 부품 및 전기전자제품에 적용 가능한 성형품을 목적으로 한다.And an object of the present invention is to provide a molded article which can be applied to automotive interior and exterior parts and electric and electronic products molded by a molded in color (MIC) method of the polypropylene resin composition.
상기한 과제 해결을 위하여, 본 발명은 C13-NMR 법에 의한 아이소탁틱 펩타드 분율이 96% 이상인 고결정성 폴리프로필렌 수지 52~75중량%; 올레핀계 고무 5~20중량%; 평균입경이 0.5 ~ 6.0㎛인 미세 탈크 5 ~ 15중량%; 실리카 분말 마스터배치인 내스크래치 첨가제 0.1 ~ 3.0중량%; 폴리에틸렌 1 ~ 15중량%; 및 전체 수지 조성물 100중량%에 대하여 메탈입자 0.1 ~ 3.0중량%를 포함하는 무도장용 메탈릭 폴리프로필렌 수지 조성물을 제공한다.In order to solve the above problems, the present invention provides a high-crystalline polypropylene resin composition comprising 52 to 75% by weight of a highly crystalline polypropylene resin having an isotactic peptad fraction of 96% or more according to the C 13 -NMR method; 5 to 20% by weight of an olefinic rubber; 5 to 15% by weight of fine talc having an average particle diameter of 0.5 to 6.0 탆; 0.1 to 3.0% by weight of scratch additive which is a silica powder master batch; 1 to 15% by weight of polyethylene; And 0.1 to 3.0% by weight of metal particles based on 100% by weight of the total resin composition.
본 발명의 일 실시형태에 따르면, 상기 고결정성 폴리프로필렌 수지는 고결정성 블록 공중합체의 폴리프로필렌 수지인 것이 바람직하다. According to one embodiment of the present invention, the highly crystalline polypropylene resin is preferably a polypropylene resin of a highly crystalline block copolymer.
상기 고결정성 블록 공중합체는 프로필렌-에틸렌 블록 공중합체, 프로필렌-1-부텐 블록 공중합체 및 프로필렌-1-헥센 블록 공중합체로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 한다.Wherein the highly crystalline block copolymer is at least one selected from the group consisting of a propylene-ethylene block copolymer, a propylene-1-butene block copolymer and a propylene-1-hexene block copolymer.
상기 고결정성 폴리프로필렌 수지는 다분산지수(PI, Polydispersity Index)가 5 이상인 분자량 분포가 넓은 블록 공중합체의 폴리프로필렌 수지인 것이 바람직하다.The highly crystalline polypropylene resin is preferably a block copolymer polypropylene resin having a polydispersity index (PI) of 5 or more and a broad molecular weight distribution.
상기 올레핀계 고무는 에틸렌-부텐 고무, 에틸렌-옥텐 고무 또는 이들의 혼합물인 것이 바람직하다.The olefin-based rubber is preferably ethylene-butene rubber, ethylene-octene rubber or a mixture thereof.
상기 내스크래치 첨가제는 마스터배치형으로 용융흐름지수(MI)가 80 ~ 130 g/10분이고, 평균입경이 0.5 ~ 10㎛인 실리카 분말이 포함된 것이 바람직하다.Preferably, the scratch additive is a master batch type silica powder having a melt flow index (MI) of 80 to 130 g / 10 min and an average particle size of 0.5 to 10 μm.
상기 폴리에틸렌은 밀도가 0.91g/cm3~ 0.97g/cm3 정도이며, 결정화도가 65% 이상인 것을 특징으로 하는 저밀도, 고밀도 폴리에틸렌 수지 조성물이다. 상기 폴리에틸렌은 내백화 효과가 가장 큰 것으로 고밀도 폴리에틸렌 수지 조성물이 바람직하다. 또한, 본 발명은 상기한 수지 조성물로 성형된 사출 무도장 성형품을 제공한다.The polyethylene has a density of about 0.91 g / cm 3 to about 0.97 g / cm 3 and a crystallinity of about 65% or more. The polyethylene has the highest whitening effect and is preferably a high-density polyethylene resin composition. The present invention also provides an injection-molded article molded from the resin composition described above.
본 발명의 이 실시형태에 따르면, 상기 성형품은 MIC(molded in color) 공법으로 성형된 자동차 내·외장 부품 및 전기전자제품인 것이 바람직하다.According to this embodiment of the present invention, it is preferable that the molded article is an automobile interior / exterior part and an electric / electronic article molded by a molded in color (MIC) method.
본 발명의 메탈릭 수지 조성물은 MIC 공법을 이용하므로 도장 공정이 삭제되어 생산 단가를 절감시키는 효과와 동시에 금속질감이 우수한 사출성형품을 제공하게 되며 외부 충격에 의한 부품의 표면 백화현상 등을 발현하지 않도록 하여 불량률을 낮추는 효과가 있다. Since the metallic resin composition of the present invention uses the MIC method, the coating process is eliminated and the production cost is reduced. At the same time, the injection molded product having excellent metal texture is provided, and the surface whitening phenomenon There is an effect of lowering the defect rate.
또한, 본 발명에서 무도장용 메탈릭 폴리프로필렌 수지 조성물은 기존 조성물에 대비하여 무기물 함량을 감소시켜 무기물 함량 감소에 따른 경량화 효과와 함께 내스크래치 성능이 향상된다.In the present invention, the unpatterned metallic polypropylene resin composition has a reduced inorganic content as compared to conventional compositions, and thus has a light weight effect as well as an improved scratch resistance.
도면 1은 실시예 2 소재로 사출한 부품의 Hole-punching 가공한 것이며 백화 현상이 나타나지 않음을 확인할 수 있다.1 is a hole-punching process of a part injected from the material of Example 2, and it can be confirmed that whitening does not occur.
본 발명의 상세한 내용은 다음과 같다. The details of the present invention are as follows.
본 발명은 C13-NMR 법에 의한 아이소탁틱 펩타드 분율이 96% 이상인 고결정성 폴리프로필렌 수지 52 ~ 75중량%; 올레핀계 고무 5~20중량%; 평균입경이 0.5 ~ 6.0㎛인 미세 탈크 5 ~ 15중량%; 실리카 분말 마스터배치인 내스크래치 첨가제0.1 ~ 3.0중량%; 폴리에틸렌 1 ~ 15중량%; 및 전체 수지 조성물 100중량%에 대하여 메탈입자 0.1 ~ 3.0중량%를 포함하는 무도장용 메탈릭 폴리프로필렌 수지 조성물을 제공한다.The present invention relates to a high crystalline polypropylene resin composition comprising 52 to 75% by weight of a highly crystalline polypropylene resin having an isotactic peptad fraction of 96% or more according to the C 13 -NMR method; 5 to 20% by weight of an olefinic rubber; 5 to 15% by weight of fine talc having an average particle diameter of 0.5 to 6.0 탆; 0.1 to 3.0% by weight of scratch additive which is a silica powder master batch; 1 to 15% by weight of polyethylene; And 0.1 to 3.0% by weight of metal particles based on 100% by weight of the total resin composition.
본 발명은 자동차 내·외장재, 전기전자제품용으로 사용하기 적합한 무도장용 메탈릭 폴리프로필렌 수지 조성물에 관한 것으로서, 고결정성 폴리프로필렌 수지, 올레핀계 고무, 무기 충전제를 포함할 수 있다. TECHNICAL FIELD The present invention relates to a metallic polypropylene resin composition for unpainted use suitable for use in automobile interior and exterior materials and electric and electronic products, and may include a high crystallinity polypropylene resin, an olefin rubber, and an inorganic filler.
본 발명의 폴리프로필렌 수지 조성물은 성형성이 우수하고, MIC 공법을 통해 제조하여 기존의 부품보다 가공 절감이 월등히 우수한 제품을 제조할 수 있는 것이다. The polypropylene resin composition of the present invention is excellent in moldability and can be manufactured through the MIC process, thereby producing a product remarkably superior in cutting cost than existing parts.
본 발명의 수지 조성물은 고결정성 폴리프로필렌 수지가 52~75중량%를 포함하며, 고결정성 폴리프로필렌 수지가 52중량% 미만이면 강성 및 사출 성형성이 나쁘며, 75중량%를 초과하면 내열성이 저하될 수 있다. The resin composition of the present invention contains 52 to 75% by weight of a highly crystalline polypropylene resin. When the amount of the highly crystalline polypropylene resin is less than 52% by weight, rigidity and injection moldability are poor. When the amount of the highly crystalline polypropylene resin exceeds 75% by weight, .
본 발명의 수지 조성물은 폴리에틸렌이 1~15중량%를 포함하며, 폴리에틸렌이 1중량% 미만이면 내백화 효과가 저하될 수 있으며, 15중량%를 초과하면 부품 성형성이 저하될 수 있다. The resin composition of the present invention comprises 1 to 15% by weight of polyethylene, and if the content of polyethylene is less than 1% by weight, the whitening effect may be lowered, and if it exceeds 15% by weight,
본 발명의 올레핀계 고무 성분은 5~20중량%를 포함하며, 이 중 에틸렌-부텐(ethylene-butene rubber) 고무가 1~15중량%로 포함되는 것이 바람직하다. 올레핀계 고무가 5중량% 미만이면 충격에 약하며, 20중량%를 초과하면 성형성 및 내열성이 감소할 수 있다. The olefin-based rubber component of the present invention comprises 5 to 20% by weight, and the ethylene-butene rubber rubber is preferably contained in an amount of 1 to 15% by weight. When the olefinic rubber is less than 5% by weight, the composition is susceptible to impact. When the olefinic rubber is more than 20% by weight, moldability and heat resistance may decrease.
상기 올레핀계 고무는 스타이렌-에틸렌-부틸렌-스타이렌(SEBS), 에틸렌-프로필렌 고무(EPR), 에틸렌-부텐 고무(EBR) 및 에틸렌-옥텐 고무(EOR) 중에서 선택되는 하나 이상을 첨가할 수 있다. The olefin rubber may be at least one selected from the group consisting of styrene-ethylene-butylene-styrene (SEBS), ethylene-propylene rubber (EPR), ethylene-butene rubber (EBR) and ethylene- .
본 발명에 있어서, 상기 무기 충전제는 폴리프로필렌 수지 조성물의 탄성율을 향상 시키기 위해서 첨가되는 것으로 상기 폴리프로필렌 수지 조성물 100중량%에 대하여 5 내지 15중량%로 포함되는 것이 바람직하다.In the present invention, the inorganic filler is added to improve the elastic modulus of the polypropylene resin composition, and it is preferable that the inorganic filler is contained in an amount of 5 to 15% by weight based on 100% by weight of the polypropylene resin composition.
상기 무기 충전제의 함량이 5중량% 미만이면 강성이 저하될 수 있고, 15중량%를 초과하면 비중 상승에 따른 부품 중량이 초과될 수 있다. If the content of the inorganic filler is less than 5% by weight, the rigidity may be deteriorated. If the content of the inorganic filler is more than 15% by weight, the weight of the component may be exceeded due to the increase in specific gravity.
상기 무기 충전제는 단독으로 사용되며, 0.5~6.0㎛의 입자 크기를 갖는 탈크가 바람직하다.The inorganic filler is used alone, and talc having a particle size of 0.5 to 6.0 mu m is preferable.
상기 메탈입자는 평균입경이 5 ~ 50㎛인 동전형의 알루미늄 입자인 것이 바람직하다.It is preferable that the metal particles are coin-shaped aluminum particles having an average particle diameter of 5 to 50 μm.
본 발명에 있어서, 상기 폴리프로필렌 수지 조성물에는 당업계에 통상적으로 사용되는 첨가제들이 추가적으로 사용될 수 있다. 예를 들면, 산화방지제, 내후안정제, 가공활제, 자외선 안정제, 대전방지제, 난연제, 항균제 및 착색제 중에서 선택된 1종 이상의 첨가제를 본 발명의 특징에 어긋나지 않는 범위 내에서 포함할 수 있다.In the present invention, the polypropylene resin composition may further contain additives commonly used in the art. For example, one or more additives selected from an antioxidant, a weathering stabilizer, a processing lubricant, a UV stabilizer, an antistatic agent, a flame retardant, an antibacterial agent and a colorant may be included within the scope of the present invention.
본 발명에서는 상기와 같은 조성성분 및 함량비를 이루고 있는 수지 조성물을 사출 성형하여 성형품을 제조할 수 있다. 상기 성형품은 추가적인 도장공정이 생략되는 무도장 성형품이다. 특히 본 발명의 수지 조성물은 MIC(molded in color) 공법으로 사출 성형되어 수지 조성물 자체에서 금속질감을 구현하면서 내백화 효과가 요구되는 자동차 내·외장 부품 및 전기전자제품의 소재로 유용하다.In the present invention, a molded article can be produced by injection molding the resin composition having the above-mentioned composition and content ratio. The molded article is a non-painted molded article in which an additional painting step is omitted. In particular, the resin composition of the present invention is useful as a material for automotive interior and exterior parts and electric and electronic products, which are injection molded by a molded in color (MIC) method to realize a metal texture in the resin composition itself and require a whitening effect.
이하 본 발명을 실시예에 의거하여 더욱 상세히 설명하겠는바, 본 발명이 하기 실시예에 의해 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.
실시예 1Example 1
실시예 1 ~ 2 및 비교예 1 ~ 4. 메탈릭 폴리프로필렌 수지 조성물의 제조Examples 1 to 2 and Comparative Examples 1 to 4 Preparation of Metallic Polypropylene Resin Composition
하기에 나타낸 조성 성분을 하기 표 6의 함량비로 칭량하여 혼련 압출기(SM 플라텍사 제작, 직경 32mm, L/D 40:1)에 투입하고 혼련하여 수지 조성물을 제조하였다.The composition components shown below were weighed in the content ratios shown in Table 6 below and fed into a kneading extruder (manufactured by SM Platte, diameter 32 mm, L / D 40: 1) and kneaded to prepare a resin composition.
조성 성분Composition component
비교예Comparative Example 1~4 1-4
비교예는 폴리프로필렌 블록 공중합체와 EBR, EOR 고무, 무기물인 탈크의 함량, 그리고 내스크래치제 및 메탈입자를 추가 첨가하여 압출을 진행하여, 본 발명에서의 실시예 조건과 비교 평가하여, 실시예 대비 백화 개선 효과와 부품 성형성 여부를 판가름할 수 있는 조건으로 실시하였다. In the comparative example, the polypropylene block copolymer, the EBR, the EOR rubber, the content of talc as an inorganic substance, the scratch agent and the metal particles were further added and the extrusion was carried out to compare and evaluate the conditions with the example of the present invention, The effect of improving the whiteness and the parts formability were evaluated under the conditions that can be judged.
사출 물성 시편의 제조 및 물성 측정Preparation and physical property measurement of injection specimen
상기 실시예 및 비교예에서 얻어진 폴리프로필렌 수지 조성물을 ENGEL (형체력 180톤) 사출 성형기를 이용하여 기계적 물성 측정용 시편들 제작한 후, 얻어진 사출 시편에 대해 굴곡탄성율, Izod 충격강도, 열변형온도, 백화 평가 등을 측정하였으며, 그 결과를 표 4에 나타내었다.The polypropylene resin compositions obtained in the above Examples and Comparative Examples were subjected to ENGEL (180-ton mold-clamping) injection molding machine to prepare specimens for measuring mechanical properties. Flexural elastic modulus, Izod impact strength, heat distortion temperature, And the evaluation of whiteness were measured. The results are shown in Table 4.
(1) 용융지수: ASTM D1238에 의거하여 230℃, 2.16kg에서 측정함.(1) Melt index: Measured at 230 DEG C and 2.16 kg in accordance with ASTM D1238.
(2) 밀도: ASTM D 792에 의거하여 측정함.(2) Density: Measured according to ASTM D 792.
(3) 인장강도: ASTM D638에 의거하여 3.2mm 두께의 시편으로 제작하여 시속 50mm/분에서 측정함. (3) Tensile strength: Measured at a speed of 50 mm / min.
(4) 굴곡탄성율 및 굴곡강도: ASTM D790에 의거하여 3.2mm 두께의 시편으로 제작하여 스팬(span) 48mm, 사속 5mm/min에서 측정함. (4) Flexural Modulus and Flexural Strength: A specimen having a thickness of 3.2 mm was prepared in accordance with ASTM D790 and measured at a span of 48 mm and an inner speed of 5 mm / min.
(5) 충격강도: ASTM D256에 의거하여 측정함. 노치드 타입(notched type) 3.2mm 두께의 시편으로 제작하여 23℃와 -30℃에서 아이조드 충격(Izod impact) 시험을 시행함.(5) Impact strength: Measured according to ASTM D256. A notched type specimen with a thickness of 3.2 mm was prepared and subjected to Izod impact test at 23 ° C and -30 ° C.
(6) 열변형 온도(Heat Deflection Temperature, HDT): ASTM D648법에 의거하여 측정함. HDT측정기를 사용하여 4.6kg의 하중에서 변형이 발생하는 온도를 측정함.(6) Heat Deflection Temperature (HDT): Measured according to ASTM D648. Using an HDT measuring instrument, measure the temperature at which deformation occurs at a load of 4.6 kg.
(7) 내스크래치(Delta L): 에릭슨법에 의거하여 하중을 갖는 추에 스크래치용 바늘을 장착하여 하중에 따른 변화 정도를 측정함. 시편은 상온에서 48 이상 방치 후 측정함.(7) Delta L: A scratch needle is attached to a weight having a load in accordance with the Ericsson method, and the degree of change according to the load is measured. The specimens were left at room temperature for more than 48 hours.
(8) 백화 평가(8) Evaluation of whiteness
사출 후 48 시간 경과한 100mm*100mm*2mm의 평판 시편에 1kg의 추(지금 25mm)를 45~50cm 높이에서 떨어뜨려 충격을 준 후에, 낙하 지점의 백화발생 부위의 지름을 측정하였다. 현대기아자동차 생산품질팀에서 품평하였으며, 그 결과는 우수, 양호, 보통, 불량으로 구분하여 나타내었다.1kg of weight (now 25mm) was dropped at a height of 45-50cm on a 100mm * 100mm * 2mm flat plate specimen 48 hours after injection, and the diameter of the whitening area at the dropping point was measured. The production quality team of Hyundai-Kia Automotive Group was rated as excellent, good, normal, and defective.
(9) 부품 성형성 평가(9) Evaluation of part formability
플로 마크(Flow mark), 용접선(weld line), 미성형, 백화 등 부품 생산 담당자의 총괄 양품 판정 여부를 확인하는 평가이다.It is an evaluation that confirms whether or not the overall production good is judged by the person in charge of production of parts such as flow mark, weld line, unformed, and white.
(10) 금속질감: 현대기아자동차 디자인팀에서 품평하였으며, 그 결과는 우수, 양호, 보통, 불량으로 구분함. 본 특허에서는 우수한 결과를 나타낸 메탈입자 구성으로만 진행함.(10) Texture of metal: It was rated by Hyundai-Kia Motors' design team, and the results are classified into excellent, good, normal, and bad. This patent only proceeds with the metal particle composition which shows excellent results.
Claims (10)
올레핀계 고무 5~20중량%;
평균입경이 0.5 ~ 6.0㎛인 미세 탈크 5 ~ 15중량%;
실리카 분말 마스터배치인 내스크래치 첨가제 0.1 ~ 3.0중량%;
폴리에틸렌 1중량% 이상 내지 15중량% 미만; 및
전체 수지 조성물 100 중량%에 대하여 메탈입자 0.1 ~ 3.0중량%를 포함하고, 상기 폴리에틸렌은 밀도가 0.91g/cm3~ 0.95g/cm3 정도인 저밀도 폴리에틸렌 수지 조성물인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.52 to 75% by weight of a highly crystalline polypropylene resin having an isotactic peptad fraction of 96% or more by the C 13 -NMR method;
5 to 20% by weight of an olefinic rubber;
5 to 15% by weight of fine talc having an average particle diameter of 0.5 to 6.0 탆;
0.1 to 3.0% by weight of scratch additive which is a silica powder master batch;
From 1 to less than 15% by weight of polyethylene; And
Including 0.1 to 3.0% by weight of the metal particles with respect to 100% by weight of the total resin composition, wherein the polyethylene has a density of 0.91g / cm 3 ~ 0.95g / cm 3 degree of low-density polyethylene resin composition for unpainted metallic poly characterized in that Propylene resin composition.
상기 고결정성 폴리프로필렌 수지는 고결정성 블록 공중합체의 폴리프로필렌 수지인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the highly crystalline polypropylene resin is a polypropylene resin of a highly crystalline block copolymer.
상기 고결정성 블록 공중합체는 프로필렌-에틸렌 블록 공중합체, 프로필렌-1-부텐 블록 공중합체 및 프로필렌-1-헥센 블록 공중합체로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.3. The method of claim 2,
Wherein the highly crystalline block copolymer is at least one selected from the group consisting of a propylene-ethylene block copolymer, a propylene-1-butene block copolymer and a propylene-1-hexene block copolymer. .
상기 고결정성 폴리프로필렌 수지는 다분산지수(PI, Polydispersity Index)가 5 이상인 분자량 분포가 넓은 블록 공중합체의 폴리프로필렌 수지인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the highly crystalline polypropylene resin is a block copolymer polypropylene resin having a polydispersity index (PI) of 5 or more and a broad molecular weight distribution.
상기 올레핀계 고무는 에틸렌-부텐 고무, 에틸렌-옥텐 고무 또는 이의 혼합물인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the olefinic rubber is an ethylene-butene rubber, an ethylene-octene rubber, or a mixture thereof.
상기 내스크래치 첨가제는 마스터배치형으로 용융흐름지수(MI)가 80 ~ 130 g/10분 이상이고, 평균입경이 0.5 ~ 6.0㎛인 실리카 분말이 포함된 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the scratch additive is a master batch type and contains a silica powder having a melt flow index (MI) of 80 to 130 g / 10 min or more and an average particle diameter of 0.5 to 6.0 탆. .
상기 폴리에틸렌은 결정화도가 65% 이상인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the polyethylene has a crystallinity of at least 65%.
상기 메탈입자는 평균입경이 5 ~ 50㎛인 동전형의 알루미늄 입자인 것을 특징으로 하는 무도장용 메탈릭 폴리프로필렌 수지 조성물.The method according to claim 1,
Wherein the metal particles are coin-shaped aluminum particles having an average particle diameter of 5 to 50 占 퐉.
The injection-molded article as claimed in claim 9, which is an automotive interior or exterior part molded by an MIC (molded in color) method or an electric / electronic product.
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| KR1020180004330A KR101987575B1 (en) | 2018-01-12 | 2018-01-12 | Non-paint metallic Polypropylene resin composite having whitening resistance |
| CN201811569045.5A CN110028749A (en) | 2018-01-12 | 2018-12-21 | The metallocene polypropylene resin combination without coating with whitening resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030091392A (en) * | 2002-05-27 | 2003-12-03 | 현대자동차주식회사 | Polypropylene resin composition |
| KR100842161B1 (en) * | 2007-03-27 | 2008-06-27 | 삼성토탈 주식회사 | Excellent izod impact strength polypropylene composition having superior flowability and glossless property |
| KR20100071367A (en) * | 2008-12-19 | 2010-06-29 | 삼성토탈 주식회사 | Polypropylene composition having excellent impact strength, whitening resistance and low shrinkage |
| KR20170130026A (en) * | 2016-05-18 | 2017-11-28 | 현대자동차주식회사 | Non-paint metallic Polypropylene composite |
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| MY113372A (en) * | 1992-04-09 | 2002-02-28 | Qenos Pty Ltd | Stratch resistant polymer composition |
| GB9302069D0 (en) * | 1993-02-03 | 1993-03-24 | Ici Plc | Scratch resistant polymer compositions |
| DE69513237T2 (en) * | 1994-08-02 | 2000-04-13 | Chisso Corp., Osaka | Polyolefin resin composition for automotive interior clothing |
| US9045629B2 (en) * | 2005-05-27 | 2015-06-02 | Basell Poliolefine Italia S.R.L. | Polyolefinic compositions having good whitening resistance |
| EP2226357B1 (en) * | 2007-12-27 | 2018-02-28 | Mitsui Chemicals, Inc. | Propylene polymer composition |
| CN102453279B (en) * | 2010-10-22 | 2013-06-12 | 中国石油化工股份有限公司 | Polypropylene composition for producing bottle cap of carbonated beverage |
| KR101501835B1 (en) * | 2013-08-13 | 2015-03-12 | 삼성토탈 주식회사 | Polypropylene resin composition having high impact resistance and stress whitening resistance |
| CN107848680B (en) * | 2015-08-31 | 2019-07-19 | 东丽薄膜先端加工股份有限公司 | Boiling is packed for polypropylene-based sealing film and the laminated body using it |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030091392A (en) * | 2002-05-27 | 2003-12-03 | 현대자동차주식회사 | Polypropylene resin composition |
| KR100842161B1 (en) * | 2007-03-27 | 2008-06-27 | 삼성토탈 주식회사 | Excellent izod impact strength polypropylene composition having superior flowability and glossless property |
| KR20100071367A (en) * | 2008-12-19 | 2010-06-29 | 삼성토탈 주식회사 | Polypropylene composition having excellent impact strength, whitening resistance and low shrinkage |
| KR20170130026A (en) * | 2016-05-18 | 2017-11-28 | 현대자동차주식회사 | Non-paint metallic Polypropylene composite |
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