KR20080010045A - The resin composition of used polypropylene resin - Google Patents

The resin composition of used polypropylene resin Download PDF

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KR20080010045A
KR20080010045A KR20060070001A KR20060070001A KR20080010045A KR 20080010045 A KR20080010045 A KR 20080010045A KR 20060070001 A KR20060070001 A KR 20060070001A KR 20060070001 A KR20060070001 A KR 20060070001A KR 20080010045 A KR20080010045 A KR 20080010045A
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polypropylene resin
waste
weight
resin
flow index
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KR20060070001A
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Korean (ko)
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양준호
홍존희
유태욱
박명식
윤경환
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현대자동차주식회사
(주)삼일폴리머
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Priority to KR20060070001A priority Critical patent/KR20080010045A/en
Publication of KR20080010045A publication Critical patent/KR20080010045A/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/20—Recycled plastic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

A waste polypropylene resin composition is provided to improve impact resistance and flowability, to allow it to be formed even in case of a small thickness and to lower a manufacturing cost by recycling the wasted bumper of automobiles. A waste polypropylene resin composition comprises 30-40 wt% of a waste polypropylene resin containing 40-50 wt% of glass fiber; 20-40 wt% of a waste thermoplastic olefin-based resin; 10-30 wt% of a high crystalline polypropylene resin; 3-9 wt% of a plastomer; 5-10 wt% of a co-polypropylene resin; and 12-25 wt% of glass monofilament. Preferably the waste polypropylene resin has a flow index of 30-80 g/10 min; the waste thermoplastic olefin-based resin has an impact strength of 35-45 kg.cm/cm and a flow index of 10-20 g/10 min; and the high crystalline polypropylene resin has an impact strength of 5-10 kg.cm/cm and a flow index of 100-250 g/10 min.

Description

폐 폴리프로필렌 수지 조성물{The resin composition of used Polypropylene resin}Waste polypropylene resin composition

본 발명은 폐 폴리프로필렌 수지 조성물에 관한 것으로서, 더욱 상세하게는 유리섬유가 함유된 폐 폴리프로필렌 수지, 폐 열가소성 올레핀계 수지, 고결정성 폴리프로필렌, 플라스토머, 코 폴리프로필렌 수지, 및 단유리 섬유를 최적의 비로 혼합하여 내충격성, 유동성이 우수하고, 얇은 두께에서도 우수한 성형의 구현이 가능하며, 수지의 물성을 재활용이 가능할 정도로 향상시킬 수 있으며 환경친화적인 효과를 얻을 수 있어 특히 자동차에 적용할 수 있는 폐 폴리프로필렌 수지 조성물에 관한 것이다.The present invention relates to a waste polypropylene resin composition, and more particularly, waste polypropylene resin containing glass fiber, waste thermoplastic olefin resin, high crystalline polypropylene, plastomer, copolypropylene resin, and single glass fiber. Is mixed at the optimum ratio, and it has excellent impact resistance and fluidity, and it is possible to realize excellent molding even at a thin thickness, and to improve the properties of the resin to be recyclable and to obtain environmentally friendly effects. It relates to a waste polypropylene resin composition that can be.

통상적으로, 범용으로 사용되는 유리섬유강화 폴리프로필렌수지는 2.0 ~ 6.0 g/10분 수준의 유동 특성을 보유하여, 사출성형 부품의 두께가 3.5 mm 이상인 수준에서 성형이 가능하지만 3.0 mm 이하의 두께를 가진 크기가 큰 부품의 성형은 어렵다. 자동차 경량화 등을 목적으로 박막(thin wall)형으로 설계되고 있는 엔진 언더커버와 같은 부품은 그 두께가 2.0 ~ 2.5 mm 정도 수준의 얇은 두께를 가진 부 품이며 부품의 크기 또한 상당히 크기 때문에 이의 성형을 위해서는 수지의 유동성을 높여 주어야 하며, 더불어 성형품의 얇은 두께로 인해 파손이 되지 않도록 충격 특성 또한 충분한 수준으로 보강해 주어야 한다. 기존의 기술로는 수지의 유동성이 높으면 충격 특성이 저하되어 제품 어셈블리 장착 작업 시 파손되거나 장착 후 사용 중 크랙 발생 등으로 인한 품질 문제가 발생하며, 충격 특성을 높이면 유동성이 낮아져 크기가 큰 부품인 경우에 성형이 되지 않는 유동성과 충격 특성간의 어려운 상관관계가 있다.In general, glass fiber-reinforced polypropylene resins, which are generally used, have a flow characteristic of 2.0 to 6.0 g / 10 minutes, so that injection molded parts can be molded at a thickness of 3.5 mm or more, but have a thickness of 3.0 mm or less. It is difficult to form large parts with excitation size. Parts such as the engine undercover, which are designed in a thin wall type for the purpose of lightening automobiles, are thin parts with a thickness of about 2.0 to 2.5 mm, and the size of the parts is also very large. In order to increase the fluidity of the resin, the impact characteristics must also be reinforced to a sufficient level so as not to be damaged by the thin thickness of the molded article. With the existing technology, if the fluidity of the resin is high, the impact characteristics are deteriorated, which causes quality problems due to breakage during product assembly work or cracking during use after installation. There is a difficult correlation between flow and impact properties that do not form in the

이에, 본 발명자들은 종래의 자동차 등에서 나오는 폐 폴리프로필렌 수지를 이용하여 물성이 우수한 소재로 사용하고자 노력 하였다. Thus, the present inventors have tried to use as a material having excellent physical properties by using waste polypropylene resin from a conventional automobile.

그 결과 폐 폴리프로필렌 수지, 폐 열가소성 올레핀계 수지, 고결정성 폴리프로필렌 수지, 플라스토머, 코 폴리프로필렌 수지 및 단유리섬유를 최적의 비로 혼합하여 우수한 충격 특성을 보유하며, 얇은 두께를 가진 사출 성형이지만 복잡한 구조를 가진 금형 내에서도 성형품의 우수한 구현이 가능하고, 수지의 물성을 재활용이 가능할 정도로 향상시킬 수 있어 환경친화적인 효과를 얻을 수 있다는 것을 알게 되었다. As a result, waste polypropylene resins, waste thermoplastic olefin resins, high crystalline polypropylene resins, plastomers, copolypropylene resins, and short glass fibers are mixed at optimum ratios to have excellent impact characteristics, and injection molding with thin thickness However, it has been found that even in a mold having a complicated structure, excellent molded products can be realized, and the properties of the resin can be improved to the extent that the resin can be recycled to obtain an environmentally friendly effect.

따라서, 본 발명은 우수한 충격특성과 함께 얇은 두께로의 사출 성형이 가능한, 폐 폴리프로필렌 수지 조성물을 제공하는데 목적이 있다.Accordingly, an object of the present invention is to provide a waste polypropylene resin composition capable of injection molding at a thin thickness with excellent impact characteristics.

본 발명은 유리섬유가 40 ~ 50 중량% 함유된 폐 폴리프로필렌 수지 30 ~ 40 중량%;The present invention is 30 to 40% by weight waste polypropylene resin containing 40 to 50% by weight of glass fibers;

폐 열가소성 올레핀계 수지 20 ~ 40 중량%;20 to 40% by weight of waste thermoplastic olefin resin;

고결정성 폴리프로필렌 수지 10 ~ 30 중량;10 to 30 weight of the high crystalline polypropylene resin;

플라스토머 3 ~ 9 중량%;3 to 9 weight percent of plastomers;

코 폴리프로필렌 수지 5 ~ 10 중량%; 및5 to 10 weight percent of copolypropylene resin; And

단유리 섬유 12 ~ 25 중량%를 함유하여 이루어지는 폐 폴리프로필렌 수지 조성물에 특징이 있다.It is characterized by the waste polypropylene resin composition which contains 12-25 weight% of single glass fibers.

이와 같은 본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention will be described in more detail as follows.

본 발명은 유리섬유가 함유된 폐 폴리프로필렌 수지, 폐 열가소성 올레핀계 수지, 고결정성 폴리프로필렌 수지, 플라스토머, 코 폴리프로필렌, 및 단유리섬유를 특정 성분비로 함유하여 내충격성, 유동성이 우수하고, 얇은 두께에서도 우수한 성형의 구현이 가능하고, 수지의 물성을 재활용이 가능할 정도로 향상시킬 수 있으며 환경친화적인 효과를 얻을 수 있어 특히 자동차에 적용할 수 있는 폐 폴리프로필렌 수지 조성물에 관한 것이다.The present invention contains waste polypropylene resin, waste thermoplastic olefin resin, high crystalline polypropylene resin, plastomer, copolypropylene, and single glass fiber containing glass fibers in a specific component ratio, and thus it has excellent impact resistance and fluidity. The present invention relates to a waste polypropylene resin composition that can be implemented even in a thin thickness, can improve the physical properties of the resin to the extent that it can be recycled, and can obtain an environmentally friendly effect.

한편, 본 발명에서 사용하는 수지 조성물의 각 구성 성분에 대하여 보다 구체적으로 설명하면 다음과 같다.On the other hand, it is as follows when each component of the resin composition used by this invention is demonstrated more concretely.

본 발명에 있어서 사용되는 폐 폴리프로필렌 수지는 유리섬유가 40 ~ 50 중량% 함유된 것으로, 유동지수가 30 ~ 80 g/10분 인 것으로, 상기 유리섬유가 40 중 량% 미만 시 고유동성이 저하되고, 50 중량% 초과 시 물성균형이 저하되는 문제점이 발생한다. 상기 유동지수가 30 g/10분 미만 시 고유동성이 저하되고, 80 g/10분 초과 시 충격물성이 저하되는 문제점이 발생한다. 상기 폐 폴리프로필렌 수지는 그 사용량이 30 ~ 40 중량% 범위로 사용하며, 30 중량% 미만 시 유동성이 낮아지고, 40 중량% 초과 시 물성 균형이 저하되는 문제점이 발생한다.The waste polypropylene resin used in the present invention contains 40 to 50% by weight of glass fiber, has a flow index of 30 to 80 g / 10 minutes, and has high fluidity when the glass fiber is less than 40% by weight. And, when more than 50% by weight occurs a problem that physical property balance is lowered. When the flow index is less than 30 g / 10 minutes, the high fluidity is lowered, and when the flow index is greater than 80 g / 10 minutes, the impact property is lowered. The waste polypropylene resin is used in the amount of 30 to 40% by weight, the fluidity is lowered when less than 30% by weight, there is a problem that the balance of physical properties is lowered when more than 40% by weight.

상기 폐 열가소성 올레핀계 수지는 용융지수가 10 ~ 20 g/분이며, 상기 용융지수가 10 g/분 미만 시 유동성이 저하되고, 20 g/분 초과 시 충격물성이 저하되는 문제점이 발생하며, 사용 함량은 20 ~ 40 중량% 범위로 사용하며, 20 중량% 미만으로 사용 시 충격 물성이 저하되고 40 중량% 초과 시 유동성이 낮아지는 문제가 있다.The waste thermoplastic olefin resin has a melt index of 10 to 20 g / min, a flow rate decreases when the melt index is less than 10 g / min, and a problem that the impact property decreases when the melt index exceeds 20 g / min occurs. The content is used in the range of 20 to 40% by weight, there is a problem that the impact properties are lowered when used in less than 20% by weight and the fluidity is lowered when it exceeds 40% by weight.

본 발명에 있어서 사용되는 고결정성 폴리프로필렌 수지는 초고유동성을 보유하여 사출성형 제품의 성형 시 압력을 감소시켜 사출성형의 조건 폭을 유연하게 할 수 있으며, 고결정성을 보유하여 저온 및 고온에서의 치수 변화율이 작기 때문에 폴리프로필렌 수지의 약점인 치수 변화율을 상대적으로 보완하기 위해 사용하며, 유동지수가 100 ~ 250 g/분 인 것을 사용하며, 상기 유동지수가 100 g/분 미만 시 유동성이 저하되고, 250 g/분 초과 시 압출 가공 시 혼련이 잘 되지 않아 충격물성이 저하되는 문제점이 발생한다. 상기 고결정성 폴리프로필렌 수지의 함량은 10 ~ 30 중량% 범위로 사용하며, 10 중량% 미만으로 사용하면 유동성 향상 및 치수안정성 효과가 미미한 문제점이 있으며 30 중량% 초과 시 전체적인 물성 균형을 맞추기가 힘든 단점이 있다. The high crystalline polypropylene resin used in the present invention has ultra high fluidity and can reduce the pressure during molding of the injection molded product, thereby making it flexible in the width of the injection molding condition, and possessing high crystallinity so that the dimensions at low and high temperatures are high. Since the change rate is small, it is used to relatively compensate for the dimensional change rate, which is a weak point of the polypropylene resin, and a flow index of 100 to 250 g / min is used, and when the flow index is less than 100 g / min, the fluidity decreases, If it exceeds 250 g / min, the kneading is not well performed during extrusion, which results in a problem of deterioration of impact properties. The content of the high crystalline polypropylene resin is used in the range of 10 to 30% by weight, the use of less than 10% by weight has a problem in that the fluidity improvement and dimensional stability effect is insignificant, and when it exceeds 30% by weight, it is difficult to balance the overall physical properties There is this.

본 발명에서 사용하는 플라스토머는 폴리프로필렌 수지에 폴리에틸렌이 첨가된 고무특성을 가진 수지로 충격 특성 보강을 위해 사용되고, 그 함량 범위는 3 ~ 9 중량% 이며, 3 중량% 미만 시 충격보강 효과가 미미하고 , 9 중량% 초과 시 충격보강효과는 있으나 인장강도 및 굴곡강도 물성 균형을 맞추기가 힘든 문제점이 발생한다.Plastomers used in the present invention is a resin having a rubber property of polyethylene is added to the polypropylene resin is used to reinforce the impact characteristics, the content range is 3 to 9% by weight, the impact reinforcement effect is less than 3% by weight And, when it exceeds 9% by weight has an impact reinforcing effect, it is difficult to balance the tensile strength and flexural strength properties.

본 발명에 있어서 사용되는 코 폴리프로필렌 수지는 조성물 컴파운딩 시 슬립 방지를 위한 가공성 향상 효과 및 기계적 물성 유지를 위해 사용 하며, 상기 코 폴리프로필렌 수지의 함량은 5 ~ 10 중량% 범위로 사용하며, 5 중량% 미만으로 사용하면 기계적 강도 증가 효과가 미미한 문제점이 있으며 10 중량% 초과 시 기계적 강도는 증가 하나 유동성 및 충격강도 저하의 단점이 있다.Copolypropylene resin used in the present invention is used to improve the processability and mechanical properties to prevent slip when compounding composition, the content of the copolypropylene resin is used in the range of 5 to 10% by weight, 5 If the amount is less than the weight%, there is a problem that the effect of increasing the mechanical strength is insignificant, and if it exceeds 10% by weight, the mechanical strength is increased, but there are disadvantages of lowering fluidity and impact strength.

본 발명에서 사용하는 단 유리 섬유는 조성물의 강성 보강을 위해 사용되고 그 함량은 12 ~ 25 중량% 이며, 12 중량% 미만 시 강성 보강 효과는 미미하고, 25 중량% 초과 시 전체적인 물성 균형이 맞지 않는 문제점이 발생한다.The short glass fiber used in the present invention is used for stiffness reinforcement of the composition, the content is 12 to 25% by weight, when less than 12% by weight of the stiffness reinforcement effect is insignificant, and when the weight exceeds 25% by weight, the overall physical properties are not balanced This happens.

본 발명의 폐 폴리프로필렌 수지 조성물의 제조 방법은 당 분야에서 사용하는 방법으로 그 방법을 특별히 한정 하지 않는다.The method for producing the waste polypropylene resin composition of the present invention is a method used in the art, and the method is not particularly limited.

이하, 본 발명을 다음의 실시예에 의거하여 더욱 상세히 설명하겠는바 본 발명이 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited to the examples.

실시예 1 ~ 3, 비교예 1 ~ 2 Examples 1 to 3, Comparative Examples 1 and 2

표 1은 성분 및 배합 비율을 나타내었다. 폐 유리섬유강화 폴리프로필렌 수지, 폐 열가소성 올레핀계 수지, 초고유동 고결정성 폴리프로필렌 수지, 코 폴리프로필렌과 충격 보강제인 플라스토머를 1차 혼합하고, 열 안정제 및 산화 방지제를 투입하여 모두 수퍼 믹서에서 15분간 혼합한 후, 압출기에서 180 ~ 220 ℃ 조건으로 컴파운딩 한다. 이 경우, 단 유리섬유의 투입은 유리섬유 절단에 의한 성능발현 저하를 고려하여 압출기와 연결된 측면투입구(Side feeder)를 통해 투입하는 것을 원칙으로 한다. 압출기에서 제조된 수지 조성물을 이용하여 형체력 1,500톤 사출기에서 직접 엔진 언더커버 금형을 이용하여 성형성 여부를 평가하였으며, 형체력 150톤 사출기에서 ASTM 규격 금형으로 물성측정용 시편을 제작하였다.Table 1 shows the components and the blending ratios. Firstly mix waste glass fiber reinforced polypropylene resin, waste thermoplastic olefin resin, ultra high flow high crystalline polypropylene resin, copolypropylene and plastimer, impact modifier, and add heat stabilizer and antioxidant to the super mixer. After mixing for 15 minutes, compounding at 180 ~ 220 ℃ condition in an extruder. In this case, the input of the short glass fiber is to be introduced through the side feeder connected to the extruder in consideration of the degradation of the performance expression by the glass fiber cutting. The resin composition manufactured in the extruder was used to evaluate the formability using the engine undercover mold directly in the clamping force 1,500 ton injection molding machine, and the specimen for the measurement of physical properties was produced in an ASTM standard mold in a clamping force 150 ton injection machine.

표 1에서의 각 성분은 다음과 같다.Each component in Table 1 is as follows.

1) 폐 GMT 범퍼백빔 재활용 유리섬유강화 폴리프로필렌 수지는 폐 자동차 및 자동차 정비보수 시에 발생되는 범퍼백빔을 재활용한 것으로, 유동지수가 50 g/10분이고 유리섬유 구성함량이 45 중량%인 재활용 수지를 사용하였다.1) Waste GMT Bumper Back Beam Recycling Glass fiber reinforced polypropylene resin is a recycled bumper back beam that is generated during the maintenance and repair of used automobiles and automobiles.The recycled resin has a flow index of 50 g / 10 minutes and a glass fiber composition of 45% by weight. Was used.

2) 폐 범퍼커버 재활용 열가소성 올레핀계 수지는 폐 자동차 및 자동차 정비보수 시에 발생되는 범퍼커버를 재활용한 것으로, 충격 강도 38 kg.cm/cm에 유동성이 15g/10분인 재활용 수지를 사용하였다.2) Waste Bumper Cover Recycling The thermoplastic olefin resin is a recycled bumper cover that is generated during the maintenance of automobiles and automobiles. The recycled resin has an impact strength of 38 kg.cm/cm and a fluidity of 15 g / 10 minutes.

3) 초고유동 고결정성 폴리프로필렌 수지는, 대한유화의 유동지수가 218 g/10분인 고결정성 폴리프로필렌수지를 사용하였다.3) The ultra-high flow highly crystalline polypropylene resin used was a highly crystalline polypropylene resin having a flow index of 218 g / 10 min.

4) 충격 보강제는, DOW Chemical社의 플라스토머(Plastomer)를 사용하였다.4) The impact modifier was a plastomer of DOW Chemical.

5) 코 폴리프로필렌 수지는, 대한유화의 유동성이 8 g/10분인 것을 사용하였다.5) The copolypropylene resin used was one having a fluidity of 8 g / 10 min.

6) 단 유리섬유는, 베트로텍스社 크기 3mm의 chopped 타입을 사용하였다.6) For the glass fiber, Betrotex Inc. used a chopped type of 3 mm in size.

Figure 112006053479312-PAT00001
Figure 112006053479312-PAT00001

<시험방법><Test method>

(1) 엔진 언더커버 성형은 금형을 직접 사용하여 성형성 여부를 평가 하였다. (1) The engine undercover molding was evaluated for formability using the mold directly.

(2) 유동지수는 ASTM D1238에 준하여 평가하였다.(2) The flow index was evaluated according to ASTM D1238.

(3) 비중은 ASTM D792에 준하여 평가하였다.(3) Specific gravity was evaluated according to ASTM D792.

(4) 아이조드 충격강도는 ASTM D256에 준하여 평가하였다.(4) Izod impact strength was evaluated according to ASTM D256.

(5) 고속 면충격강도는 엔진 언더커버 사출 성형품의 편평한 면을 10cm × 10cm 크기로 샘플링한 후, 고 속충격시험기(High Rate Impact Tester, Rheometrics社 제품, 기술표준원 보유)를 이용하여 성형품의 실제 면 충격강도를 상온에서 측정하였다.(5) The high-speed surface impact strength is obtained by using the high rate impact tester (manufactured by Rheometrics, a technical standard) after sampling the flat surface of the engine undercover injection molded product into a size of 10cm × 10cm. Surface impact strength was measured at room temperature.

(6)굴곡탄성률은 ASTM D790의 방법으로 상온에서 측정 하였다.(6) Flexural modulus was measured at room temperature by the method of ASTM D790.

(7)열변형온도는 ASTM D648의 방법으로 상온에서 측정하였다.(7) Heat distortion temperature was measured at room temperature by the method of ASTM D648.

종합하면, 폐 폴리프로필렌 수지를 사용한 조성물은, 충격특성 면에서 비교예와 동등 수준을 확보함과 동시에 유동 지수의 대폭 향상 효과를 확인할 수 있다. 또한 비교예 1의 경우 충격 특성 면에서는 유리하나 유동 지수의 저하로 엔진 언더 커버 성형이 불가능하고, 비교예 2의 경우 엔진 언더커버 성형은 가능하나 상대적으로 낮은 충격강도를 보였다.In sum, the composition using waste polypropylene resin can confirm the level equivalent to a comparative example in terms of impact characteristics, and can confirm the significant improvement effect of a flow index. In addition, Comparative Example 1 is advantageous in terms of impact characteristics, but the engine undercover molding is impossible due to a decrease in the flow index.

상기에서 상술한 바와 같이, 본 발명에 따르면, 폐 폴리프로필렌 수지 조성물은 자동차에서 다량 배출되는 폐 범퍼를 재활용하여 원가 절감의 효과를 기대할 수 있고, 국내외 폐차 처리법규에 적극적으로 대응할 수 있는 효과가 있으며 또한 우수한 충격특성과 유동지수 향상을 가지며, 자동차 부품 소재로 사용이 가능하다.As described above, according to the present invention, the waste polypropylene resin composition can be expected to reduce the cost by recycling the waste bumper discharged in a large amount of cars, and has an effect that can actively respond to domestic and foreign waste disposal regulations. In addition, it has excellent impact characteristics and improved flow index, and can be used as a material for automobile parts.

Claims (4)

유리섬유가 40 ~ 50 중량% 함유된 폐 폴리프로필렌 수지 30 ~ 40 중량%;30 to 40% by weight of waste polypropylene resin containing 40 to 50% by weight of glass fibers; 폐 열가소성 올레핀계 수지 20 ~ 40 중량%;20 to 40% by weight of waste thermoplastic olefin resin; 고결정성 폴리프로필렌 수지 10 ~ 30 중량;10 to 30 weight of the high crystalline polypropylene resin; 플라스토머 3 ~ 9 중량%;3 to 9 weight percent of plastomers; 코 폴리프로필렌 수지 5 ~ 10 중량%; 및5 to 10 weight percent of copolypropylene resin; And 단유리 섬유 12 ~ 25 중량%를 함유하여 이루어지는 것을 특징으로 하는 폐 폴리프로필렌 수지 조성물.The waste polypropylene resin composition containing 12-25 weight% of single glass fibers. 제 1 항에 있어서,The method of claim 1, 상기 폐 폴리프로필렌 수지는 유동지수가 30 ~ 80 g/10 분인 것을 특징으로 하는 폐 폴리프로필렌 수지 조성물.The waste polypropylene resin waste polypropylene resin composition, characterized in that the flow index of 30 ~ 80 g / 10 minutes. 제 1 항에 있어서, The method of claim 1, 상기 폐 열가소성 올레핀계 수지는 충격 강도가 35 ~ 45 kg.cm/cm 이고, 유동지수가 10 ~ 20 g/10 분인 것을 특징으로 하는 폐 폴리프로필렌 수지 조성물.The waste thermoplastic olefin resin has an impact strength of 35 to 45 kg.cm/cm, and has a flow index of 10 to 20 g / 10 minutes. 제 1 항에 있어서, The method of claim 1, 상기 고결정성 폴리프로필렌 수지는 충격 강도가 5 ~ 10 kg.cm/cm 이고, 유동지수가 100 ~ 250 g/10 분인 것을 특징으로 하는 폐 폴리프로필렌 수지 조성물.The high crystalline polypropylene resin has an impact strength of 5 to 10 kg.cm / cm, waste polypropylene resin composition, characterized in that the flow index is 100 to 250 g / 10 minutes.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110330729A (en) * 2019-07-22 2019-10-15 江苏金陵奥普特高分子材料有限公司 A kind of super-high fluidity dynamic vulcanization thermoplastic elastomer and preparation method thereof
CN112143094A (en) * 2019-06-28 2020-12-29 合肥杰事杰新材料股份有限公司 Regenerated polyolefin plastic composition and preparation method and application thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112143094A (en) * 2019-06-28 2020-12-29 合肥杰事杰新材料股份有限公司 Regenerated polyolefin plastic composition and preparation method and application thereof
CN112143094B (en) * 2019-06-28 2022-04-26 合肥杰事杰新材料股份有限公司 Regenerated polyolefin plastic composition and preparation method and application thereof
CN110330729A (en) * 2019-07-22 2019-10-15 江苏金陵奥普特高分子材料有限公司 A kind of super-high fluidity dynamic vulcanization thermoplastic elastomer and preparation method thereof

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