• 제목/요약/키워드: nitrile butadiene rubber

검색결과 27건 처리시간 0.032초

Effect of Carbon Black Activation on Physicomechanical Properties of Butadiene-nitrile Rubber

  • Shadrinov, N.V.;Kapitonov, E.A.;Sokolova, M.D.;Okhlopkova, A.A.;Shim, Ee Le;Cho, Jin-Ho
    • Bulletin of the Korean Chemical Society
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    • 제35권10호
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    • pp.2891-2894
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    • 2014
  • The effects of mechanical activation of carbon black on the processing and properties of butadiene nitrile rubber were studied. Mechanical activation of carbon black caused an improvement in the physical and mechanical properties of the butadiene-nitrile rubber, BNR-18AMN. The optimum activation time that would afford rubber with improved properties was established.

Research on Capacitive Tactile Sensor for Electronic Skin using Natural Rubber and Nitrile Butadiene Rubber

  • Sangmin Ko;Dasom Park;Sangkyun Kim
    • Elastomers and Composites
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    • 제58권4호
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    • pp.173-178
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    • 2023
  • Recently, there has been a significant focus on the development of flexible and stretchable sensors, driven by advancements in electronic devices and the robotics industry. Among these sensors, tactile sensors stand out as the most actively researched, playing a crucial role in facilitating interaction between humans and electronic devices, particularly in robotics and medical applications. This study specifically involves the manufacturing of a capacitive tactile sensor using a relatively straightforward process and sensor structure. Natural rubber and Nitrile butadiene rubber, commonly employed in the rubber industry, were utilized. The dielectric material in the manufactured tactile sensor possesses a porous structure. Notably, the resulting tactile sensor demonstrated excellent sensitivity, approximately 1%/kPa, and exhibited the capability to detect pressures up to 212 kPa.

Nitrile Butadiene Rubber의 비선형성에 대한 실험적 연구 (Experimental Investigation on the Non-linearity of Nitrile Butadiene Rubber)

  • 유명호;이택성;도제성;권종호
    • Elastomers and Composites
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    • 제42권3호
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    • pp.159-167
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    • 2007
  • 산업기계에서 공기압 또는 유압용 액추에이터(actuator)가 넓이 사용되는데 액추에이터의 중요 부품으로 탄성중합체로 만들어진 시일을 사용한다. 우수한 밀봉특성을 요구하는 시일의 재료로 내유성과 내마모성이 비교적 우수한 NBR(nitrile butadiene rubber) 재료가 가장 많이 사용한다. 산업기계의 액추에이터는 적용환경에 따라 낮거나 혹은 높은 온도에서 사용되는데 여러 온도에서 NBR은 그에 따른 특성이 다르게 나타난다. 본 연구에서는 새롭게 만들어지고 있는 재료 중 공기압, 유압용 시일(Seal)재료로 사용하는 Hs70, 80, 90등 3종의 NBR을 각각 $-10^{\circ}C,\;20^{\circ}C,\;80^{\circ}C,\;100^{\circ}C$온도에서 소재의 비선형(nonlinear) 특성의 시험과 유한요소해석에 필요한 재료상수를 알아보고 각각의 온도에서 하중 반복조건에 따른 소성변형 경향을 살펴보았다.

Lifetime Prediction and Aging Behaviors of Nitrile Butadiene Rubber under Operating Environment of Transformer

  • Qian, Yi-hua;Xiao, Hong-zhao;Nie, Ming-hao;Zhao, Yao-hong;Luo, Yun-bai;Gong, Shu-ling
    • Journal of Electrical Engineering and Technology
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    • 제13권2호
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    • pp.918-927
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    • 2018
  • Based on the actual operating environment of transformer, the aging tests of nitrile butadiene rubber (NBR) were conducted systematically under four conditions: in air, in transform oil, under compression in air and under compression in transform oil to studythe effect of high temperature, transform oil and compression stress simultaneously on the thermal aging behaviors of nitrile butadiene rubber and predict the lifetime. The effects of liquid media and compression stress simultaneously on the thermal aging behaviors of nitrile butadiene rubber were studied by using characterization methods such as IR spectrosc-opy, thermogravimetric measurements, Differential Scanning Calorimetry (DSC) measurements and mechanical property measurements. The changes in physical properties during the aging process were analyzed and compared. Different aging conditions yielded materials with different properties. Aging at $70^{\circ}C$ under compression stress in oil, the change in elongation at break was lower than that aging in oil, but larger than that aging under compression in air. The compression set or elongation at break as evaluation indexes, 50% as critical value, the lifetime of NBR at $25^{\circ}C$ was predicted and compared. When aging under compression in oil, the prediction lifetime was lower than in air and under compression in air, and in oil. It was clear that when predicting the service lifetime of NBR in oil sealing application, compression and media liquid should be involved simultaneously. Under compression in oil, compression set as the evaluation index, the prediction lifetime of NBR was shorter than that of elongation at break as the evaluation index. For the life prediction of NBR, we should take into account of the performance trends of NBR under actual operating conditions to select the appropriate evaluation index.

카본 함량에 따른 니트릴 부타디엔 고무의 음향 특성 (Acoustic Characteristics of Nitrile Butadiene Rubber with Carbon Black Content)

  • 정경일;윤석왕;조국영;박정기
    • 한국음향학회:학술대회논문집
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    • 한국음향학회 2002년도 하계학술발표대회 논문집 제21권 1호
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    • pp.377-380
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    • 2002
  • Acoustic Characteristics of Nitrile Butadiene Rubber with Carbon Black ContentAcoustic and mechanical properties of Nitrile Butadiene Rubbers (NBR) with the variation of the carbon black content were investigated. NBR where the acrylonitrile content is $33\%$ based on the mole percent has been prepared with fixed sulfur content for vulcanization. Acoustic measurement of the prepared rubbers were peformed in the frequency region of $300\;\~\;1000\;kHz$. Their mechanical properties such as density, hardness were also measured. Increase of the carbon black content in the rubber resulted in enhancement of the mechanical property and linear increase of the sound speed as function of the carbon black content. Interestingly, attenuation of the sound speed was only affected by the existence of the carbon black and not by the amount of carbon black in the experiment range of this article. In this study, it was found that the amount of carbon black content in the NBR was correlated with the acoustic properties and can be estimated nondestructively by the measurement of the specific acoustic property.

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주상변압기 밀봉재질 개선을 위한 수명시험 방법 (Enhancement of Rubber Gasket Material for Pole Transformer)

  • 송동수
    • 전기학회논문지
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    • 제59권10호
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    • pp.1770-1775
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    • 2010
  • An acceleration life test for rubber gasket of pole transformer was performed. The Arrhenius method was applied as an accelerated degradation test. The failure mode was considered as an elongation, and the failure mechanism is counted as a heat. It is found that both the current material(NBR: Nitrile Butadiene Rubber) and recommended alternative material(HNBR: Hydrogenated Nitrile Butadiene Rubber) have the same Weibull distribution as a life characteristic. For life expectation 95% reliability level of characteristic life is used at using temperature. The test results for NBR and HNBR are 7.7 years and 28.0 years on $50^{\circ}C$ of using temperature, respectively.

인쇄용 고무roller의 제조와 물성: (I) 부타디엔고무와 니트릴고무 혼련물의 내유성 및 기계적 성질 (Preparation and Properties of Printing Rubber Roller : (I) Oil Resistance and Mechanical Properties of Butabiene Rubber/Nitrile Rubber Compounds)

  • 박찬영
    • 한국인쇄학회지
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    • 제18권2호
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    • pp.83-101
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    • 2000
  • In this experiment butadiene rubber(BR)/acrylonitrile butadiene rubber(NBR) blends was prepared and then the applicability of BR/NBR blends as printing rubber roller was examined. With the aid of open 2-roll mill, BR, NBR and another chemical additives were compounded. Then rubber vulcanizates were manufactured by hot press and maximum torque, Mooney viscosity, mechanical properties and oil resistance of the test specimens were measured. With prolonged oil aged treating time, BR/NBR blends became soft and so the hardness of blends decreased. It could be explained by the swelling of rubber matrix with oil penetration in to rubber molecules. The undesirable low value of oil resistance of BR was significantly improved by blending BR with NBR.

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고무 제품 유한요소해석 결과의 신뢰 향상을 위한 물성치 연구 (Material Properties for Reliability Improvement in the FEA Results for Rubber Parts)

  • 백운철;조맹효;황재석
    • 대한기계학회논문집A
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    • 제35권11호
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    • pp.1521-1528
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    • 2011
  • 자동차용 고무부품에 대한 유한요소 해석의 신뢰 향상을 위하여 고무소재 물성치에 대한 연구를 수행하였다. 마운트 설계를 위하여 수백 종의 고무 물성치를 모두 측정하는 것은 현실적으로 어렵다. 그래서 시험 값을 대신하는 순수전단 시험 데이타의 변환 방법을 제시하여 유효성을 확인하였다. 순수전단시험의 응력-변형 관계의 변환은 단순인장시험 데이터와 주 연신률의 함수로 정의한 푸아송의 비를 사용하였다. 카본 충진 고무의 변환 순수전단시험 데이터는 100%변형까지 시험 데이터와 상당히 유사하다. 단순인장시험 데이타와 함께, 순수전단시험의 변환 데이타와 시험 데이터를 각각 사용한 허브베어링 씰의 접촉력에 대한 유한요소해석 결과들은 시험 데이터와 거의 일치하였다. 해석에 사용된 재료상수는 Ogden 상수이다.

Enhancement of Compatibility between Ultrahigh-Molecular-Weight Polyethylene Particles and Butadiene-Nitrile Rubber Matrix with Nanoscale Ceramic Particles and Characterization of Evolving Layer

  • Shadrinov, Nikolay V.;Sokolova, Marina D.;Okhlopkova, A.A.;Lee, Jungkeun;Jeong, Dae-Yong;Shim, Ee Le;Cho, Jin-Ho
    • Bulletin of the Korean Chemical Society
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    • 제34권12호
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    • pp.3762-3766
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    • 2013
  • This article examines the modification of surface properties of ultrahigh-molecular-weight polyethylene (UHMWPE) with nanoscale ceramic particles to fabricate an improved composite with butadiene-nitrile rubber (BNR). Adhesion force data showed that ceramic zeolite particles on the surface of UHMWPE modulated the surface state of the polymer and increased its compatibility with BNR. Atomic force microscopy phase images showed that UHMWPE made up the microphase around the zeolite particles and formed the evolving layer with a complex interface. The complex interface resulted in improvements in the mechanical properties of the composite, especially its low-temperature resistance coefficients, thereby improving its performance in low-temperature applications.

내열성 향상을 위한 폴리케톤/탄성체 블렌드 제조 및 특성 (Preparation and Properties of Polyketone/Rubber Blend to Improve Heat-resistance)

  • 윤주호;윤정환;하성문;김종활
    • Elastomers and Composites
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    • 제49권1호
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    • pp.37-42
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    • 2014
  • 폴리케톤은 일산화탄소, 에틸렌, 프로필렌을 단량체로 중합되는 삼중공중합체 (terpolymer)로서 폴리아미드, 플리에스테르, 폴리카보네이트 등의 일반 엔지니어링 플라스틱 소재에 비해 원료 및 중합 공정비가 저렴한 소재이다. 또한 기계적 특성과 내열성, 내화학성, 연료투과성, 내마모성 등이 우수하여 기존 엔지니어링 플라스틱 소재를 대체할 수 있는 환경 친화적인 소재로 주목을 받고 있다. 본 연구에서는 폴리케톤의 내열성을 향상시키기 위해 탄성체(Ethylene propylene copolymer, Nitrile butadiene rubber, Ethylene acrylic rubber)를 배합하여 블렌드물을 제조하였고, 각 소재에 대하여 내열성, 내유성에 평가에 따른 특성을 분석하였다.