| Project/Area Number |
10650724
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | KURUME NATIONAL COLLEGE OF TECHNOLOGY |
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Principal Investigator |
MORI Tetsuo KURUME NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF BIOCHEM. & APPLIED CHEM. PROFESSOR, 生物応用化学科, 教授 (10037963)
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| Co-Investigator(Kenkyū-buntansha) |
OIKI Hirokazu KURUME NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF BIOCHEM. & APPLIED CHEM. ASSISTANT, 生物応用化学科, 助手 (00290825)
TSUDA Yusuke KURUME NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF BIOCHEM. & APPLIED CHEM. ASSOCIATE PROFESSOR, 生物応用化学科, 助教授 (30270367)
TOH Michiharu KURUME NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF BIOCHEM. & APPLIED CHEM. PROFESSOR, 生物応用化学科, 教授 (70037927)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Rubber / Vulcanization / Cure Curve / Dielectric Loss Tangent / Conductivity |
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| Research Abstract |
Vulcanization of NBR, BR and SBR rubbers was carried out in a compression mold equipped with two electrodes for the electric measurement. Progress of vulcanization was followed by the measurement of dielectric loss tangent (tanδ) and electric current applying alternating or direct voltage. The conductivity was calculated from electric current, dimension of an electrode, etc. Rubber compounds with 40phr of carbon black to 100phr of rubber, or without carbon black were prepared. The tanδand conductivity-cure time curves were compared with the torque-cure time curve, which is widely used as a cure curve. The following result was obtained. (1)The vulcanization of NBR with and without carbon black could be followed by measuring tanδor conductivity applying alternate or direct voltage. (2)The vulcanization of BR without carbon black could be followed by measuring conductivity applying direct voltage. (3)The vulcanization of SBR without carbon black could be followed by measuring tanδapplying alternate voltage. (4)The vulcanization of BR and SBR with carbon black could not be followed, because much electric current flew at the early stage of vulcanization.
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