KR20020038052A - Composition of epdm and polypropylene - Google Patents
Composition of epdm and polypropylene Download PDFInfo
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- KR20020038052A KR20020038052A KR1020000068101A KR20000068101A KR20020038052A KR 20020038052 A KR20020038052 A KR 20020038052A KR 1020000068101 A KR1020000068101 A KR 1020000068101A KR 20000068101 A KR20000068101 A KR 20000068101A KR 20020038052 A KR20020038052 A KR 20020038052A
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
- C08L23/12—Polypropene
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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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
- 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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
본 발명은 에틸렌 프로필렌 다이엔 삼원 공중합체(ethylen-propylene-dinen-monomer, 이하 "EPDM"으로 칭함)와 폴리프로필렌로 이루어진 조성물에 관한 것이다. 더욱 상세하게는 EPDM 및/또는 폐EPDM 분말과 폴리프로필렌으로 이루어진 재활용 가능한 조성물에 관한 것이다.The present invention relates to a composition consisting of ethylene propylene diene terpolymer (ethylen-propylene-dinen-monomer, hereinafter referred to as "EPDM") and polypropylene. More particularly, it relates to a recyclable composition consisting of EPDM and / or waste EPDM powder and polypropylene.
최근 자동차 산업의 발달로 인한 폐고무의 발생량이 급격하게 늘어남으로써 이에 따른 폐고무의 처리 문제가 사회적으로 대두되고 있다. 그러나 폐고무를 처리하기 위한 현재까지의 기술은 소각과 매립에 의한 것으로, 이에 따른 환경 문제가심각해지고 있다. 따라서 폐고무를 재활용함으로써 소각과 매립에 따른 환경문제를 해결하는 것이 가장 최상의 방법이라 할 수 있으나, 경제성 문제와 기술개발의 부진에 따른 어려움을 겪고 있는 실정이다.Recently, the amount of waste rubber caused by the development of the automobile industry has been rapidly increased, so the problem of disposal of waste rubber has been raised socially. However, the current technology for treating waste rubber has been caused by incineration and landfill, and environmental problems are serious. Therefore, the best way to solve the environmental problems caused by incineration and landfill by recycling the waste rubber is to suffer from economic problems and poor technology development.
지금까지 혼합물을 제조하기 위한 블렌딩 방법이 있었으나, 종래의 블렌딩 방법으로 재료를 성형했을 때, 불완전한 혼합과 미가교, 적정 가공조건 수립의 어려움 등의 원인으로 인하여 성형품 표면에 흐름 자국의 생성 및 기계적 강도의 저하로 인하여 실제 적용상에는 어려움이 뒤따르는 실정이다.There has been a blending method for preparing a mixture until now, but when forming the material by the conventional blending method, the formation of flow marks and mechanical strength on the surface of the molded part due to incomplete mixing, uncrosslinking, difficulty in establishing proper processing conditions, etc. Due to the deterioration of the actual situation is difficult to follow.
따라서 본 발명은 이러한 점을 고려하여, EPDM 및 폴리프로필렌, 첨가제 등의 재료의 비율을 달리하여 종래의 제품이 가진 문제를 해결하고, 좀더 고급화된 제품을 개발할 수 있도록 하였다. 또한 원시 EPDM에 폐EPDM을 첨가하여 환경 부분에서 사회적으로 문제가 되고 있는 폐고무 처리의 방안을 제시할 수 있도록 하였다.Therefore, in view of this point, the present invention solves problems of conventional products by changing the proportion of materials such as EPDM, polypropylene, and additives, and develops more advanced products. In addition, waste EPDM was added to the raw EPDM to suggest a method for waste rubber treatment that is a social problem in the environment.
도 1은 폐EPDM/EPDM/폴리프로필렌의 구조를 나타낸 도면이다.1 is a view showing the structure of the waste EPDM / EPDM / polypropylene.
도 2는 다양한 스크루 속도로 제조된 샘플들의 인장강도 및 파단신율을 나타내는 도면이다.2 is a diagram showing the tensile strength and elongation at break of samples prepared at various screw speeds.
도 3은 다양한 스크루 속도로 제조된 샘플들의 경도 및 비중을 나타내는 도면이다.3 is a view showing the hardness and specific gravity of samples prepared at various screw speeds.
본 발명에서는 EPDM과 폴리프로필렌을 혼합기 또는 밴버리 혼합기(banbury mixer)에 투입하고 첨가제 및 오일을 투입하여 배합을 실시한다. 이때 EPDM과 폴리프로필렌의 비율은 중량기준으로 2:1 ∼ 3:1이며, 원시 EPDM에 대해 폐EPDM을 1 ~ 40 중량%를 첨가 하였다. 이때 사용한 폐EPDM은 분말형태이며 입도는 5 ~ 30 ㎛ 이다. 폐EPDM 분말은 이미 가교되어 있다. 혼합물 중 각 성분들의 분포를 도 1에 나타내었다. 용융 상태의 폴리프로필렌에 EPDM 및 폐EPDM 입자가 분포되어 있으며,상온에서 고무의 탄성을 갖고, 가공시 열가소성의 특성을 갖는다.In the present invention, EPDM and polypropylene are added to a mixer or banbury mixer, and additives and oil are added to carry out compounding. At this time, the ratio of EPDM and polypropylene is 2: 1 to 3: 1 by weight, and 1-40 wt% of waste EPDM was added to the raw EPDM. The used waste EPDM is in powder form and has a particle size of 5 to 30 µm. The waste EPDM powder is already crosslinked. The distribution of each component in the mixture is shown in FIG. 1. EPDM and waste EPDM particles are distributed in the molten polypropylene, have elasticity of rubber at room temperature, and have thermoplastic properties during processing.
본 발명을 이하의 실시예를 통해 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the following examples.
실시 예 1Example 1
1. 제조1. Manufacture
내부혼합기를 170 ~ 220 ℃, 30 ~ 50 rpm의 조건으로 맞춘 뒤 가동시켰다. 내부 혼합기에 EPDM을 투입하고 2 ~ 4 분 후 폴리프로필렌(mp: 165 ℃)을 투입한 다음 충진제를 투입시켰다. 이어서 오일을 넣고, 경화제를 투입한 후 경화 촉진제를 투입하였다. 각 성분의 사용량은 다음의 표와 같다.The internal mixer was operated after setting the conditions at 170 to 220 ° C. and 30 to 50 rpm. EPDM was added to the internal mixer, and after 2-4 minutes, polypropylene (mp: 165 ° C.) was added, followed by a filler. Then oil was added, a curing agent was added and a curing accelerator was added. The amount of each component is shown in the following table.
올레핀계 고분자 블렌드에는 일반적으로 폴리프로필렌이 많이 사용되고, 폴리프로필렌이 사용되는 예는 극히 드문데, 그 이유는 폴리프로필렌이 범용수지 중에서 비교적 높은 융점을 갖는 결정성 수지이고 내약품성, 전기절연성, 기계적 강도 및 내열성이 다른 범용수지보다 우수하기 때문이다.Polypropylene is generally used in olefin polymer blends, and polypropylene is rarely used. The reason is that polypropylene is a crystalline resin having a relatively high melting point in general purpose resins, and has chemical resistance, electrical insulation, and mechanical strength. And heat resistance is superior to other general-purpose resins.
내부 혼합기로 혼합한 후 단축 압출기(Dongjin Machinery Co., Ltd., 스크루 직경 : 30ø, L/D : 25)를 사용하여 실린더 온도(190∼210 ℃)에서 스크루 속도를 30, 50, 70 및 90 rpm으로 변화시키면서 압출 시험을 실시하였으며, 냉각 후 펠렛으로 만들었다.After mixing with an internal mixer, screw speeds of 30, 50, 70, and 90 at a cylinder temperature (190-210 ° C) were used with a single screw extruder (Dongjin Machinery Co., Ltd., screw diameter: 30 °, L / D: 25). Extrusion tests were carried out with varying rpms and made into pellets after cooling.
2. 시편제조2. Manufacture of Specimen
압출된 소재를 사출기(Wonil press co., Ltd.)를 사용하였고, 노즐 및 히터의 제 1 및 제 2 영역(zone)의 온도는 각각 200 ℃, 195 ℃, 190 ℃로 하였으며, 압력은 144 바였다. 시편은 ASTM D 1708 규격으로 제작된 금형으로 사출하여 제작하였고, 48 시간 동안 항온 항습실에서 방치한 후 사용하였다.The extruded material was used as a press press (Wonil press co., Ltd.), the temperature of the first and second zones of the nozzle and the heater was 200 ℃, 195 ℃, 190 ℃, respectively, the pressure was 144 bar It was. Specimens were produced by injection into a mold made to the ASTM D 1708 standard, and used after leaving in a constant temperature and humidity room for 48 hours.
3. 시험방법3. Test method
기본적인 물성의 측정에서 인장시험은 Universal Test Machine(LLOYD INSTRUMENTS, LR10K)을 이용하여 500 mm/min의 인장속도와 10 kN의 하중계(load cell)을 사용하여 네번의 시험을 실시한 후, 그 평균값으로 인장강도(tensile strength)와 파단신율(elongation at break)을 구하였고, KSM 6518의 가황고무 물리 시험법에 의해 경도는 스프링식(shore A)을 사용하였다.In the measurement of basic physical properties, the tensile test was performed four times using a universal test machine (LLOYD INSTRUMENTS, LR10K) using a tensile speed of 500 mm / min and a load cell of 10 kN. Tensile strength and elongation at break were determined, and hardness was used as the spring type (shore A) by KSM 6518 vulcanized rubber physical test method.
4. 기계적인 특성4. Mechanical characteristics
먼저 제조한 시편의 기계적인 특성을 알아보기 위해 인장시험, 신장율, 경도 및 비중 테스트를 실시한 결과를 표 2에 나타내었다.Table 2 shows the results of the tensile test, elongation, hardness and specific gravity test to determine the mechanical properties of the prepared specimen.
실시예 2Example 2
EPDM 대신 EPDM과 폐EPDM의 혼합물을 사용한 것을 제외하고는 실시예1과 동일하게 실시하고 제조한 시편의 인장시험, 신장율, 경도 및 비중 테스트를 실시한 결과를 표 3에 나타내었다.Table 3 shows the results of tensile test, elongation, hardness and specific gravity test of the prepared specimens, which were carried out in the same manner as in Example 1 except that EPDM and waste EPDM were used instead of EPDM.
본 발명은 지금까지 수입에 의존하던 열가소성 고무의 국산화를 통하여 열악한 고무 산업계에 활력을 불러 일으킬 수 있을 것이다. 자동차 부품으로서 필수적으로 사용되는 고무제품의 환경문제를 고려한 부품개발이 시급하며, EPDM과 폴리프로필렌과의 블렌드하여 성형시 발생하는 스크랩의 재활용 및 폐고무를 재사용하므로서 각국에서 부각되어지는 환경적인 측면에 기여할 수 있을 뿐만 아니라 부가적으로 원재료의 수입감소로 인한 원가 절감 및 국가 경쟁력의 확보에도 상당한 효과가 있으리라 예상된다.The present invention will bring vitality to the poor rubber industry through the localization of thermoplastic rubber, which has been dependent on imports. It is urgent to develop parts in consideration of environmental problems of rubber products used as automobile parts, and to recycle the scraps generated during molding by reusing blends with EPDM and polypropylene and to reuse the waste rubber. In addition, it is expected to have a significant effect on cost reduction and securing national competitiveness by reducing imports of raw materials.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100723352B1 (en) | 2006-02-16 | 2007-05-30 | 주식회사 폴리원 | Ethylene-propylene diene monomer(epdm) products by the utilization of reclaimed epdm powder |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4130535A (en) * | 1975-07-21 | 1978-12-19 | Monsanto Company | Thermoplastic vulcanizates of olefin rubber and polyolefin resin |
US4348459A (en) * | 1980-11-10 | 1982-09-07 | Uniroyal, Inc. | Thermoplastic elastomer and electrical article insulated therewith |
JPS5922949A (en) * | 1982-07-28 | 1984-02-06 | Showa Kagaku Kogyosho:Kk | Preparation of rubberlike composition |
KR880000830A (en) * | 1986-06-11 | 1988-03-29 | 알. 쿠에늘 맨프레드 | Interactive video recording method and apparatus |
US4745149A (en) * | 1985-09-11 | 1988-05-17 | Bayer Aktiengesellschaft | Thermoplastic elastomers |
US6015861A (en) * | 1997-12-17 | 2000-01-18 | The Standard Products Company | Method for manufacture of elastomeric alloys using recycled rubbers |
-
2000
- 2000-11-16 KR KR1020000068101A patent/KR20020038052A/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4130535A (en) * | 1975-07-21 | 1978-12-19 | Monsanto Company | Thermoplastic vulcanizates of olefin rubber and polyolefin resin |
US4348459A (en) * | 1980-11-10 | 1982-09-07 | Uniroyal, Inc. | Thermoplastic elastomer and electrical article insulated therewith |
JPS5922949A (en) * | 1982-07-28 | 1984-02-06 | Showa Kagaku Kogyosho:Kk | Preparation of rubberlike composition |
US4745149A (en) * | 1985-09-11 | 1988-05-17 | Bayer Aktiengesellschaft | Thermoplastic elastomers |
KR880000830A (en) * | 1986-06-11 | 1988-03-29 | 알. 쿠에늘 맨프레드 | Interactive video recording method and apparatus |
US6015861A (en) * | 1997-12-17 | 2000-01-18 | The Standard Products Company | Method for manufacture of elastomeric alloys using recycled rubbers |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100723352B1 (en) | 2006-02-16 | 2007-05-30 | 주식회사 폴리원 | Ethylene-propylene diene monomer(epdm) products by the utilization of reclaimed epdm powder |
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