• 제목/요약/키워드: butyl rubber

검색결과 72건 처리시간 0.022초

파쇄 폐타이어를 이용한 반응벽체에 관한 연구: 폐타이어 내의 MTBE(Methyl tertiary Butyl Ether) 흡착 중심

  • 박상현;이재영
    • 한국지하수토양환경학회:학술대회논문집
    • /
    • 한국지하수토양환경학회 2003년도 총회 및 춘계학술발표회
    • /
    • pp.176-179
    • /
    • 2003
  • Fuel oxygenates, such as Methyl tertiary Butyl Ether (MTBE) is additive in gasoline used to reduce air pollution. Gasoline components and fuel additives can leak form underground storage tanks. MTBE is far more water soluble than gasoline hydrocarbons like BTEX then it travels at essentially the same velocity as groundwater. MTBE in drinking water causes taste and odor problems. Therefore, the purpose of the this study is to examine the ability of ground rubber to sorb MTBE form water. The study consisted of running both batch and column tests to determine the sorption capacity and the flow through utilization efficiency of ground rubber. The result of Column test indicate that ground tire rubber has on the 36% utilization rate. Finally, it is clear that ground rubber present an attractive and relatively inexpensive sorption medium for a MTBE. The Author thought that to determine the economic costs of ground rubber utilization, the cost to sorb a given mass of contaminant by ground rubber will have to be compared to currently accepted sorption media.

  • PDF

Synthesis of Polyimide from Diamine Containing 4-tert-Butyl Group

  • Byung Hyun Ahn
    • Elastomers and Composites
    • /
    • 제59권3호
    • /
    • pp.91-96
    • /
    • 2024
  • A novel aromatic polyimide containing the 4-tert-butyl group was prepared from 4-tert-butyl-1,2-phenylene bis(4-aminobenzoate) and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). 4-tert-Butyl-1,2-phenylene bis(4-aminobenzoate) was synthesized from 4-tert-butyl catechol and 4-nitrobenzoyl chloride. The poly(amic acid) was transformed into a polyimide via chemical imidization. The polyimide was soluble in N-methyl-2-pyrrolidone (NMP) and could be cast into a flexible and transparent film. The thermal stability of the polyimide was decreased slightly due to the pendant tertbutyl group.

자착식 부틸고무시트에 다발형 유리섬유직포를 적층한 비노출방수공법에 관한 연구 (An Study on the Non-Exposure Waterproofing Method Laminated Twist Glass Fiber Mesh on Self Adhesion Butyl Rubber Sheet)

  • 방명진;박진상;강효진;오상근
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2007년도 춘계학술논문 발표대회
    • /
    • pp.133-136
    • /
    • 2007
  • It has been applied the self adhesion waterproofing sheet which is developed from exist asphalt waterproofing sheet by heat and torch in domestic construction field. However, the problem of waterproofing have constantly happened due to air pocket condition and defect of joint part in waterproofing construction. Therefore, in this study, we would like to analyze the field application as testing in side of materials and construction method of self adhesion butyl rubber sheet and study of the materials performance.

  • PDF

부틸고무를 결합재로 사용한 바이오센서의 전기화학적 성질 (Electrochemical Properties of Biosensor with Butyl Rubber Binder)

  • 최세영;윤길중
    • Elastomers and Composites
    • /
    • 제41권4호
    • /
    • pp.231-237
    • /
    • 2006
  • 부틸고무를 결합재로 사용하여 과산화수소 정량 바이오센서를 제작하고, 그것의 전기화학적 특성과 실용화 가능성을 살펴보았다. 전극은 본 실험실에서 연구되었던 실리콘 오일을 결합재로 사용한 동식물조직 바이오센서보다 수백 배 이상 큰 신호를 보여주었으며, $0.0{\sim}-1.00\;V$(vs. Ag/AgCl)의 넓은 퍼텐셜 영역에서 안정적으로 작동될 수 있었다. 또 신호전류는 실험 퍼텔셜 영역에서 전극전위에 따라 좋은 직선성을 보였다. 검출한계는 $3.0{\times}10^{-4}\;M$ 이었으며, Lineweaver-Burk 도시의 직선성은 효소가 전극 표면에 효과적으로 고정되어 있음을 확인시켜 주었다. 높은 감도에 의한 신호전류의 재현성과, 부틸고무의 결합력에 의한 전극물질의 기계적 안정성은 전극의 실용화 가능성을 보여 주었다.

브롬화된 부틸고무의 탈브롬화 밑 이성질체화 메커니즘에 대한 연구 (Study on the Isomerization and Dehydrobromination Mechanism of Brominated Butyl Rubber)

  • Wu, Yibo;Guo, Wenli;Li, Shuxin;Gong, Liangfa;Shang, Yuwei
    • 폴리머
    • /
    • 제34권1호
    • /
    • pp.69-73
    • /
    • 2010
  • Effects of reaction time and temperature on the isomerization and dehydrobromination reactions of brominated butyl rubber were investigated. The structural composition of brominated butyl rubber was determined by Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance spectroscopy($^1H$-NMR), Density functional theory (DFT) was used to study on the isomerization and dehydrobromination mechanisms of model compounds. The geometries for model compounds of 3-bromo-5,5,7,7-tetramethyl-2(2',2',4',4'-tetramethyl)pentyl-1-octylene (3BrOE), 1-bromo-5,5,7,7-tetramethyl-2(2',2',4',4'-tetramethyl)pentyl-2-octylene (1Br2OE) and 5,5,7,7-tetramethyl-2(2',2', 4',4'-tetramethyl)pentyl-1,3-octadiene (CD) had been optimized by using density functional theory at B3LYP/3-21G and B3LYP/6-31G levels. The predicted energy of 3BrOE lies higher than that of 1Br2OE which suggests that 1Br2OE configuration is more stable than the 3BrOE configuration. Compared with the energy barrier, the pathway of dehydrobromination is less competitive than that of isomerization. This is qualitatively consistent with the experimental results.