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Volume 45, Issue 3
Displaying 1-10 of 10 articles from this issue
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[in Japanese]1972 Volume 45 Issue 3 Pages 257-265
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
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[in Japanese]1972 Volume 45 Issue 3 Pages 266-275
Published: March 15, 1972
Released on J-STAGE: May 07, 2010
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[in Japanese], [in Japanese]1972 Volume 45 Issue 3 Pages 276-282
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
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[in Japanese]1972 Volume 45 Issue 3 Pages 283-290
Published: March 15, 1972
Released on J-STAGE: February 05, 2010
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1972 Volume 45 Issue 3 Pages 291-298
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
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S. Sugiki, K. Yamamoto1972 Volume 45 Issue 3 Pages 299-303
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
JOURNAL FREE ACCESSA rapid and simple quantitative analytical method of three component blended rubbers of NR-SBR-BR was investigated by pyrolysis gas chromatography using radio frequency induction heating apparatus.
According to this method, three components mixing ratios were simply calculated from the two components mixing ratios of NR-SBR and SBR-BR utilizing the peaks of dipentene, styrene and 4-vinylcyclohexene in the chromatogram.
Errors of this method were within 5%, and the time required for this analysis was about 30 minutes.
This method is effective for rapid and simple quantitative analysis of three components blended rubbers of NR-SBR-BR.View full abstractDownload PDF (534K) -
STUDY ON FAILURE MECHANISM OF RUBBER VULCANIZATES (VIII)K. Fujimoto, T. Migita, T. Kasuya1972 Volume 45 Issue 3 Pages 304-307
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
JOURNAL FREE ACCESSTensile fracture properties are investigated in the wide temperature range for SBR vulcanizates which have same styrene content and different chain-conformation. These observed values are compared with the calculated ones which are obtained from the theoretical equations given previously. In case that butadien chain contains small quantity of rigid component, the observed values coincides with the calculated. However, in case of large quantity of rigid component, the observed value deviates from the calculated. This was related to the fundamental hypotheses for theoretical equations.View full abstractDownload PDF (430K) -
A STUDY ON DETERIORATION AND STABILITY OF BR AND IR (VII)M. Tanaka1972 Volume 45 Issue 3 Pages 308-312
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
JOURNAL FREE ACCESSWith the method of oxygen absorption, I examined into the effect of the antioxidation of amine-type antioxidants on the white filler loading of BR and IR vulcanizates.
On BR, it was very difficult to determine relative merits among antioxidants because of its hard bridges. While on IR, the difference of antioxidation (of the antioxidants) was definitely found out. Now to estimatethem in the point of the swiftness of absorption of oxygen up to 1 m. mol/g, the order is PBNA<PANA DNPPD<ANA<PIPPD=DPPD.
This result, however, doesn't coincide with that of the ordinary accelerated aging test.View full abstractDownload PDF (741K) -
A STUDY ON DETERIORATION AND STABILITY OF BR AND IR (VIII)M. Tanaka1972 Volume 45 Issue 3 Pages 313-319
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
JOURNAL FREE ACCESSThe difference of the effect among the various quantities of the antioxidants was examined on law rubbers by the spectrum analysis of Infrared (Spectra), while on vulcanizates by (the experiment) of oxygen absorption and I considered the the mechanism of each case.
In consequence those are turned out; (1st). There is a proper quantity in the case of amine type antioxidants. (2nd). The proper quantity of antioxidant is different in law rubber from vulcanizate. (3rd.) In this experiment the same kind of antioxidant have a same tendency as to the effect of the various quantities to BR and IR. (4th.) The grounds of the proper quantity is explained by Semenov. I think that is causes to the stability of antioxidants to the oxygen, and that the esaity oxidized antioxidants, which are presented by me, are liable oxidate the rubber.View full abstractDownload PDF (869K) -
1972 Volume 45 Issue 3 Pages 320-321
Published: March 15, 1972
Released on J-STAGE: October 16, 2009
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