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Volume 67, Issue 2
Displaying 1-11 of 11 articles from this issue
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[in Japanese]1994 Volume 67 Issue 2 Pages 81-102
Published: 1994
Released on J-STAGE: July 09, 2007
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[in Japanese], [in Japanese]1994 Volume 67 Issue 2 Pages 103-109
Published: 1994
Released on J-STAGE: July 09, 2007
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[in Japanese]1994 Volume 67 Issue 2 Pages 110-114
Published: 1994
Released on J-STAGE: July 09, 2007
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1994 Volume 67 Issue 2 Pages 115-116
Published: 1994
Released on J-STAGE: July 09, 2007
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[in Japanese]1994 Volume 67 Issue 2 Pages 117
Published: 1994
Released on J-STAGE: July 09, 2007
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[in Japanese], [in Japanese]1994 Volume 67 Issue 2 Pages 118-122
Published: 1994
Released on J-STAGE: July 09, 2007
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Toshinari Yaegaki, Tatsuyuki Okuno, Kenichi Ioroi, Takeo Iida, Kunio G ...1994 Volume 67 Issue 2 Pages 123-131
Published: 1994
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSThe mechanical properties have been measured for Poly (vinyl chloride) (PVC)-Thermoplastic Polyurethane (TPU), -(Ethylene-vinylalchol) copolymer (EVOH), -Polyethylene (PE), -Poly (methyl methacrylate) (PMMA), binaly roll blends. The tensile properties for the PVC-PE, PVC-PMMA blend systems does not show the influence of metal soap as a stabilizer for PVC, while that for the PVC-TPU, PVC-EVOH blend systems does remarkably. In particulary, when the added Lead stearate (Pb-stear.) in blend systems, tensile strength have been significant decreased. It have been found by SEM and measured torque that Pb-stear, remarkably showed lubricative effect against TPU or EVOH. In result, it were occured in decreasing tensile strength because of that inhibite to disperse the polymer materials. In this way, it had become apparent that the effect of the metal soap on mechanical behavior of polymers should not be disregarded in running of roll process in polymer blends contained PVC.View full abstractDownload PDF (1635K) -
Byron H. To, David J. Sikora1994 Volume 67 Issue 2 Pages 132-141
Published: 1994
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSTBSI is a new accelerator which provides: Long scorch delay and slow cure rate High modulus development Improved reversion resistance Excellent storage stability
TBSI can be used for: Replacement of secondary amine-based sulfenamide accelerators Scorchy or difficult to process compounds Compounds exposed to prolonged cure cycles
Maintaining adhesion of rubber to brassed steel10)View full abstractDownload PDF (826K) -
Mutsuhisa FURUKAWA, Syuji MAEDA, Takanori KITAGAWA, Tetsuo YOKOYAMA1994 Volume 67 Issue 2 Pages 142-150
Published: 1994
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSNovel polyurethane elastomers (PUE) were prepared from poly (β-methyl-δ-valerolactone) glycol (PMVL) and poly (3-methylpentamethylene adipate) glycol (PMPA) with TDI, MDI, or HDI, and BD. PCL and PBA based PUE were also prepared. Microphase structures and mechanical properties of the PUE were studied by measurements of DSC, WAXS, dynamic viscoelastic properties, and stress-strain relationships. On the novel PUE, TDI based PUE were amorphous and had a mixed phase. HDI based PUE exhibited microphase separation and Tg of these PUE was the lowest in the PUE studied. The HDI based PUE had a broad rubbery plateau region. Behavior of microphase separation for MDI based PUE showed behavior between TDI series and HDI series. Mechanical properties of novel PUE based on TDI and MDI were similar to those of PBA or PCL based PUE. However, Modulus of HDI series of novel PUE had lower than those of PBA or PCL based PUE, but elongation was larger than that of PBA or PCL based PUE. Stability of hydrolysis at high temperature was the order of TDI-<MDI-<HDI-series.View full abstractDownload PDF (999K) -
Hideo SAKAI1994 Volume 67 Issue 2 Pages 151-158
Published: 1994
Released on J-STAGE: July 09, 2007
JOURNAL FREE ACCESSThe developement of tires with low rolling resistance is required to reflect the social demand for energy conservation. However, tires with low rolling resistance are prone to squeal more in such oparations as cornering at rapid speed and sudden braking. This tendency is undesirable from the viewpoint of noise reduction. In order to solve this dilemma by reducing the generation of tire squeal noise, we conducted an analysis of squeal noise properties generated in cornering. Major findings in this reseach are as follows:
(1) The squeal noise is generated when the lateral slip velocity 0.8_??_1.0m/s, regardless of running speed. (2) The comparison of the generated squeal noise is posible by comparing the lateral force coefficient (=cornering force/load) when the squeal noise sound pressure rapidly increases. (3) In the running speed rises or the load increases, squeal noise is generated at a smaller lareral force coefficient. (4) If inner pressure decreases, squeal noise is generated at a smaller lateral force coefficent. However, the influence of inner pressure is smaller than the influences of running speed and load. (5) If the grooves become shallow (cornering power increases), squeal noise is generated at a large lateral force coefficient. (6) If the temperature rises, squeal noise is generated at a smaller lateral force coeffient. (7) In the case of tires with tread rubber with low rolling resistance, squeal noise is generated at a smaller lateral force coefficient than in the case of general tire. However, the reduction in the coefficient is only equivalent to the case when the load is increased by approximately 10%.View full abstractDownload PDF (857K) -
[in Japanese]1994 Volume 67 Issue 2 Pages 159-160
Published: 1994
Released on J-STAGE: July 09, 2007
JOURNAL RESTRICTED ACCESSDownload PDF (272K)
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