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Volume 65, Issue 8
Displaying 1-7 of 7 articles from this issue
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[in Japanese]1992 Volume 65 Issue 8 Pages 445-456
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSDownload PDF (1497K) -
[in Japanese], [in Japanese]1992 Volume 65 Issue 8 Pages 457-462
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSDownload PDF (633K) -
[in Japanese]1992 Volume 65 Issue 8 Pages 463-464
Published: 1992
Released on J-STAGE: July 09, 2007
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Kazuo NISHIMOTO, Nobuaki URABE, Tetsuo AKIYAMA1992 Volume 65 Issue 8 Pages 465-472
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSThis paper examines the relation of the rotor revolution frequency in an internal mixer, equipped with two wing type rotors, to spectral peaks which are obtained from the analysis of electric power consumption charts of NBR mixing. The maximum entropy spectral analysis method was used to analyze the charts. Major spectral peak frequencies were identified as the frequencies corresponding to the rotor revolution, the twofold rotor revolution, and one and a twofold encountering cycles of the two wing rotors when they were rotated with different frequencies. It was then shown that the experimentally determined elecrical conductivity of the unvulcanized rubber sheet, which is taken to be an index of mixing, can be expressed as an exponential function of the total rotor revolution number, regardless of the magnitude of the electric energy input, the rotor revolution frequency, and the difference in revolution frequencies between two wing rotors.View full abstractDownload PDF (787K) -
STUDIES ON DYNAMIC MODULUS OF ELASTICITY IN LOADING OF COMBINED STRAIN AMPLITUDE ON FRRKunihiko FUJIMOTO, Jin HIRAOKA1992 Volume 65 Issue 8 Pages 473-482
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSIn this study, we derived theoretical equations on the dynamic modulus of elasticity when step-strain amplitude is loaded, and when parts of broken physical bonds are restored returning to an equilibrium in a free state after repeated loading and unloading of strain amplitude along the principal axis of sloped eight-layered nylon fiber FRR, having a matrix of carbon black particle reinforced NR. At the same time, we experimentally confirmed the validity of the equations.View full abstractDownload PDF (940K) -
Katsuhito MIURA, Yasuo MATOBA, Yukinari BUNNOMORI, Motoki KITAGAWA, Sh ...1992 Volume 65 Issue 8 Pages 483-493
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSImprovement of vulcanizate properties of propylene oxide-allyl glycidyl ether copolymer rubber was carried out by means of copolymerizing the 3rd and the 4th monomers. At first, we used ethylene oxide as the 3rd monomer. The resulted terpolymer showed as good oil resistance as chloroprene rubber when ethylene oxide content was ca. 25mol%. The low temperature properties of the terpolymer was not spoiled at all. Next, epibromohydrin was introduced as a crosslinking-site monomer. The four-components copolymer from propylene oxide-ethylene oxide-allyl glycidyl ether-epibromohydrin has active bromomethyl groups in side chains. Therefore, it is crosslinkable by well-known crosslinking agents, for example, ethylene thiourea for halogen-containing rubbers such as CR. The vulcanizate was more resistant to heat and ozone than the above terpolymer which was crosslinked by sulfur.View full abstractDownload PDF (981K) -
[in Japanese]1992 Volume 65 Issue 8 Pages 494-495
Published: 1992
Released on J-STAGE: July 09, 2007
JOURNAL RESTRICTED ACCESSDownload PDF (237K)
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