• Title/Summary/Keyword: Polyolefin elastomer

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Polyolefin Block Copolymer Thermoplastic Elastomer (폴리올레핀 블록공중합체 열가소성 탄성체)

  • Koo, Chong Min
    • Korean Chemical Engineering Research
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    • v.46 no.1
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    • pp.15-22
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    • 2008
  • Polyolefin block copolymer has been taking a great deal of attention due to their great potential in polymer industry since a new metallocene catalytic method for producing polyolefin block copolymer was developed by Dow Chemicals. However, so far, there was no systematic study of olefin block copolymer. In this review, Linear polyolefin block copolymers, containing semicrystalline poly (ethylene) (E) blocks and a rubbery block as a thermoplastic elastomer, were investigated in the viewpoint of microphase separation mode, microstructure, deformation behavior, and molecular architecture.

Synthesis of Multi Hydroxyl Chain-End Functionalized Polyolefin Elastomer with Poly(t-butylstyrene) Graft (Poly(t-butylstyrene) 그라프트를 가지는 수산기 말단 관능화 폴리올레핀 탄성체의 합성)

  • Lee, Hyoung Woo;Cho, Hee Won;Lee, Sang Min;Park, Sat Byeol;Kim, Dong Hyun;Lee, Bum Jae
    • Elastomers and Composites
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    • v.48 no.1
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    • pp.10-17
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    • 2013
  • Polyolefin-g-poly(t-butylstyrene) as one of the high-temperature polyolefin-based thermoplastic elastomers was synthesized by the graft-from anionic living polymerization from the styrene moieties of the linear poly(ethylene-ter-1-hexene-ter-divinylbenzene) as a soft block to form the hard end blocks, poly(t-butylstyrene). The chemistry of the anionic graft-from polymerization involved complete lithiation of the pendant styrene unit of the soft polyolefin elastomer with sec-BuLi/TMEDA followed by the subsequent graft anionic polymerization of 4-tert-butylstyrene with Mn=10,000~30,000 g/mol. The graft-from living anionic polymerization were very effective and the grafting size increased proportionally with increasing monomer concentration and the reaction times. The synthetic methodology for the multi-hydroxyl chain-end modified polyolefin-g-poly(t-butylstyrene) was proposed by using the thiol-ene click reaction between 2-mercaptoethanol and the polyolefin-g-[poly(t-butylstyrene)-b-high vinyl polyisoprene], which was obtained from the subsequent living block copolymerization using polyolefin-g-Poly(t-butylstyrene) with isoprene. The result indicated that this process produced a new well-defined functionalized graft-type polyolefin-based TPE with high $T_g$ hard block(> $145^{\circ}C$).

Study on the Properties of Polyolefin Elastomer(POE)/Ethylene Vinylacetate(EVA) Film with the Conent of Compatibilizer (POE-g-MAH) (상용화제(POE-g-MAH) 함량에 따른 Polyolefin elastomer/Ethylene vinylacetate 필름의 물성 변화에 대한 연구)

  • Na Young Jang;Eun Hye Kang;Jeong Jin Park;Gyeong Cheol Yu;Jong Hee Kim;Seung Goo Lee
    • Textile Coloration and Finishing
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    • v.35 no.3
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    • pp.159-168
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    • 2023
  • Polyolefin elastomer (POE) is widely used in a variety of applications, particularly in the manufacture of composites, due to its excellent mechanical properties, chemical resistance, and flexibility. However, POE has a high processing temperature, which causes damage to the fiber during the manufacturing process when impregnating the fiber. Therefore, ethylene vinylacetate (EVA), which has a low melting point and excellent adhesion properties, is blended with POE to reduce the processing temperature, and POE-g-MAH (Polyolefin elastomer-grafted-maleic anhydride) is used as a compatibilizer to further improve the POE/EVA blend properties. The compatibility of POE/EVA blends is observed by SEM, and the interaction between each polymer is confirmed by DSC and FT-IR. In addition, the effect of adding the compatibilizer is analyzed through mechanical properties such as tensile strength and elongation. The optimal content of compatibilizer for POE/EVA blends considering physical properties and moldability is sought, and 20 phr is determined to be the most appropriate.

Mechanical Properties and Morphology of Polyamide/Polypropylene Blends

  • Kim, Su Young;Ha, Jin Uk;Shin, Donghyeok;Jung, Wooseok;Lee, Pyoung-Chan
    • Elastomers and Composites
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    • v.55 no.1
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    • pp.1-5
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    • 2020
  • This study examined the effects of the addition of maleic anhydride-grafted polypropylene (PP-g-MA) and polyolefin elastomer (POE) on polyamide 66 (PA66) and polypropylene (PP) blends. The blends of PA66/PP with PP-g-MA and POE were prepared using a twin screw extruder. Mechanical testing results revealed that the tensile, flexural, and izod impact strengths of the blends were maximized at a PP-g-MA content of 2 phr. The increased mechanical strength of the blends with PP-g-MA was attributed to the compatibilizing effect of the PA66 and PP blends. In addition, as the POE content increased, the impact strength of the blends increased. However, at a high POE content, the tensile and flexural strengths decreased, seemingly because of the lower mechanical properties of POE.

Characterization of PETG Thermoplastic Composites Enhanced TiO2, Carbon Black, and POE (TiO2, Carbonblack 및 POE로 보강된 열가소성 PETG 복합재료의 특성)

  • Yu, Seong-Hun;Lee, Jong-hyuk;Sim, Jee-hyun
    • Textile Coloration and Finishing
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    • v.31 no.4
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    • pp.354-362
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    • 2019
  • In order to apply thermoplastic composites using PETG resin to various industrial fields such as bicycle frames and industrial parts, it is necessary to verify the impact resistance, durability and mechanical properties of the manufactured composite materials. To improve the mechanical properties, durability and impact resistance of PETG resin, an amorphous resin, in this study, compound and injection molding process were carried out using various additives such as TiO2, carbon black, polyolefin elastomer, and PETG amorphous resin. The thermal and mechanical properties of the thermoplastic composites, and the Charpy impact strength. The analysis was performed to evaluate the characteristics according to the types of additives. DSC and DMA analyzes were performed for thermal properties, and tensile strength, flexural strength, and tensile strength change rate were measured using a universal testing machine to evaluate mechanical properties. Charpy impact strength test was conducted to analyze the impact characteristics, and the fracture section was analyzed after the impact strength test. In the case of POE material-added thermoplastic composites, thermal and mechanical properties tend to decrease, but workability and impact resistance tend to be superior to those of PETG materials.

A Review on IPP/Elastomer/Nanofiller Composites for the Possibility of Use as Power Cable Insulations (동일배열 폴리프로필렌/엘라스토머/나노충전제 복합체의 전력케이블 절연체로서의 사용 가능성에 대한 문헌적 고찰)

  • Pyun, Sun-Ho
    • Journal of the Korean Applied Science and Technology
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    • v.29 no.2
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    • pp.184-192
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    • 2012
  • For use as recyclable power cable insulations without dielectric oil, technology trends of IPP based thermoplastic polyolefin elastomer(TPO) nanocomposites were reviewed. In 2010 research results of IPP nanocomposite dielectrics for power capacitors showed promising high voltage properties except dielectric loss. Research of IPP based TPO nanocomposites for automotive exterior parts revealed considerable improvements of mechanical properties including impact strength, especially minimization of compatibilizer content, the origin of dielectric loss. A study on electrical properties of IPP based TPO nanocomposites containing a few weight percent of nanofillers for power cable insulations is suggested.

Rheology and Tensile Properties of EPDM/Polyolefin Blends (EPDM과 폴리올레핀 블렌드의 레올로지와 인장물성(引張物性))

  • Ha, Chang-Sik;Ryou, Jin-Ho;Kang, Dong-Il;Cho, Won-Jei
    • Elastomers and Composites
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    • v.25 no.3
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    • pp.203-210
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    • 1990
  • The structure and properties of blends of ethylene-propylene-diene terpolymer(EPDM) and polyolefin blends have been investigated. The rheology and tensile properties of the EPDM/HDPE(high density polyethylene), EPDM/PP(polypropylene) binary and EPDM/PP/HDPE ternary blends were studied along with morphological analyses. Those properties were affected by preferential interaction of EPDM on HDPE, compared to that of EPDM on PP, for the binary blends. The preferetial interaction may stem from the molecular characteristics of EPDM to possess more ethylene units than propylene units in the elastomer. The EPDM played a role as compatibilizer for HDPE and PP in the EPDM/PP/HDPE ternary blends.

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Characterization and 3D Analysis of PETG/POE Thermoplastic Composites (PETG/POE 열가소성 복합재료의 특성평가 및 전산해석)

  • Yu, Seong-Hun;Lee, Jong-Hyuk;Sim, Ji-Hyun
    • Composites Research
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    • v.32 no.6
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    • pp.360-367
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    • 2019
  • In order to apply thermoplastic composites using PETG resin to various industrial fields such as bicycle frames and industrial parts, it is necessary to verify the impact resistance, durability, mechanical properties and 3D analysis of the manufactured composite materials. To improve the mechanical properties, durability and impact resistance of PETG resin, an amorphous resin, in this study, compound and injection molding process were carried out enhanced various weight percent POE(polyolefin elastomer). The thermal and mechanical properties of the thermoplastic composites, and the charpy impact strength, The analysis was performed to evaluate the characteristics according to weight percent of POE. Charpy impact strength test was conducted to analyze the impact characteristics, and the fracture section was analyzed after the impact strength test. In the case of POE material-added thermoplastic composites, thermal and mechanical properties tend to decrease, but workability and impact resistance tend to be superior to those of PETG materials.

Development of Rubber Composite Materials Using Waste EPDM (폐 EPDM을 이용한 고무 복합 소재 개발)

  • Park, Dong-Kyu;Hong, Yeo-Joo;Jeong, Keuk-Min;Kim, Jin-Kuk
    • Elastomers and Composites
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    • v.47 no.2
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    • pp.121-128
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    • 2012
  • Waste EPDM(W-EPDM) collected from the automotive weather strip and the gasket of a laundry machine has not been effectively recycled. Using this W-EPDM powder and other ingredients, i.e., binder(polyolefin resin, polyolefin elastomer, etc.), filler and additives, various economic rubber composites were made by extrusion. In advance of main experiments, the effects of ultrasonic treatment of W-EPDM on the property of rubber composites, comparison in the property of the composites of W-EPDM with those of virgin and devulcanized EPDM, and waste tire rubber were investigated. Also, the properties of the rubber composites extruded with a 12-screw extruder were compared with those extruded with twin-screw extruder. Various W-EPDM composites for synthetic turf filler and car mat were extruded and injection molded, and 3 main properties of tensile strength, elongation and hardness were investigated to develop economical and proper recipes of the rubber composites.

Characterization of ABS/PC/POE Thermoplastic Composites and Prediction of Mechanical Properties by Geometry Simulation (ABS/PC/POE 열가소성 복합재료의 특성평가 및 시뮬레이션을 통한 물리적 성능 예측 연구)

  • Yu, Seong-Hun;Lee, Jong-Hyuk;Yeo, Dong-Hyun;Shin, Yong-Ho;Park, Jong-Su;Sim, Jee-Hyun
    • Textile Coloration and Finishing
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    • v.34 no.2
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    • pp.117-126
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    • 2022
  • In this study, thermoplastic composites were manufactured using ABS(acrylonitrile butadiene styrene), PC(polycarbonate), and POE(polyolefin elastomer), which are thermoplastic plastics. Twin screw extruder and injection molding were used to manufacture thermoplastic composites. When the ABS/PC/POE thermoplastic composite material was manufactured, the POE mass fraction was set to 1 to 5 wt.%, and the thermal and mechanical properties according to the POE mass fraction were analyzed. Based on the physical properties of ABS/PC/POE, a 3D model in the form of an e-bike frame was created. After setting the boundary conditions, when an external load is applied, geometry simulation was performed to predict product performance. The ABS/PC/POE thermoplastic composite material exhibited the best physical properties when the mass fraction of POE was 3 wt.%. In the simulation results for the physical properties of the 3D model in the form of an e-bike frame, the best physical properties were shown when the mass fraction of POE was 2 ~ 3 wt.%. As a result, the manufacturing conditions for ABS/PC/POE thermoplastic composite materials were set, and research was conducted to reduce product development costs and development time.