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Volume 14, Issue 7
Displaying 1-12 of 12 articles from this issue
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[in Japanese]1958 Volume 14 Issue 7 Pages 432-433
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
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(2) THE SWELLING OF 6 NYLON FIBRES IN AQUEOUS PHENOL SOLUTION, AND THE PHENOL ABSORBED BY 6 NYLON FIBRES (3) THE ESTIMATION METHOD OF THE LATERAL ORDER DISTRIBUTION IN 6 NYLON FIBRESHisaaki Kanetsuna1958 Volume 14 Issue 7 Pages 434-446
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
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Tadashi Muroi, Yukihiko Emura1958 Volume 14 Issue 7 Pages 447-451
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe properties of the solvents which have an effect upon the solvation of P. V. C. are studied. The relation between molecular polarization and surface tension is illustrated, showing the nonswelling zone and the swelling zone from it.
It was found that the polar and nonpolar mixed solvents in these zones have good solvation power for P. V. C. and the mixture of both the nonpolar solvent with large surface tension and the polar solvent with large molecular polarization has a better solvation power.View full abstractDownload PDF (366K) -
Shoichi Sakajiri, Iwao Fujimoto, Isao Okamura1958 Volume 14 Issue 7 Pages 452-454
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe relationship between the physical properties and the degree of polymerization of polyvinyl chloride was studied.
Fractionated polymers were spun into fibers and drawn, and their birefringence, tensile strength and softening temperature were measured.
As a result, it was found that maximum draw ratio, the tensile strength and the birefringence have a tendency to increase with the increase of degree of polymerization,
This tendency, was found evident up to about 1000 degrees of polymerization. However, the softening temperature had no relation with the degree of polymerization.View full abstractDownload PDF (223K) -
Kan Shirakashi, Kinzo Ishikawa, Isamu Kuriyama1958 Volume 14 Issue 7 Pages 455-461
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSAn appratus, mainly constructed by the electro-inductance gauge, is devised for measuring the torque-twist properties of yarns.
Several results on rayon tire cord yarn obtained with this equipment are shown as follows;-
1) Increasing in pre-tension, the twist moment of oiling and nonoiling rayon tire cord yarns rises as increasing the twist is increased, and the logarithm of the torque is found to vary nearly linearly with twist under the various pre-tension. Thus, the equation governing the torque (M)-twist (T) relationship is:
log M=a+b T
where a and b are constant.
Also torque of the non-oiling rayon tire cord yarn is always greater than of the oiling yarn.
2) Effects of the rate of twisting in these experiments on the torsional rigidity of the non-oiling yarn are not clear.
3) On measuring the repeated torque-twist curve of non-oiling yarn at the varied maximum twist turns, the quantity of the delayed torque due to time-effect appears as twist increases.
4) The torque versus log time relationship is found more nearly linear in measuring torsional relaxation of the non-oiling rayon tire cord yarn. As the twist in increased the rate of relaxation becomes greater.View full abstractDownload PDF (418K) -
(IV) THE FATIGUE RECOVERY OF CRIMPED FIBERS IN SOLUTIONSKenji Higuchi, Katsuyoshi Kawada1958 Volume 14 Issue 7 Pages 462-466
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe fatigue recovery of crimped fiber, were measured as follows:-
1) The fiber was stretched in the air to remain for 1 minute at 5% load of its tensile strength.
2) The stretch was then released and the fiber was left either in the air or in distilled water at 20°C for 1 to 1, 200 minutes,
3) For the second time, the fiber was stretched as in (1) to the extent of 5% load of its tensile strength.
The test was aimed:-
1) To calculate from the first and second stress-strain curves the crimp contents.
2) To ascertain the influences of the time allowed after the first stretching either in the air or in distilled water and to determine the percentages of crimp recovery by the ratio between the first and second examinations of crimp contents.
The results of the tests made on various kinds of fibers, it have shown that:-
a) The crimp recovery is more deterred when the fiber is left in distilled water than in the air.
b) And that the highest recovery will result on wool staple when it is left in the air, but Amiran fiber can be the highest when it is left in distiled water.View full abstractDownload PDF (349K) -
(5) BEATING ACTION (6) BREAKING ACTIONKenji Higuchi1958 Volume 14 Issue 7 Pages 467-474
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
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Eiichi Kuze, Tetsuya Sakai, Mituyoshi Iwasaka, Naohiko Sugo1958 Volume 14 Issue 7 Pages 475-480
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSBy the electrical means, taking-up and letting-off motions of the Benninger type loom are observed under the various experimental weaving conditions. Letting-off motion are notably related to the setting of loom.View full abstractDownload PDF (2084K) -
Hisashi Uedaira1958 Volume 14 Issue 7 Pages 481-483
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSIn the cases of the infinite and finite dyeing, (Dt/r2) was expanded as the power series of Mt/M∞by the method of successive substitution, where D is the diffusion coefficient, r the radius of fibre, Mt the amount of dye taken up by the fibre in time t, and M∞ the amount taken up at equilibrium. This expansion is always possible provided Dt/r2<1. Generally this condition is satisfied in most of dyeing. By this expression D is very easily obtained from Mt/M∞.View full abstractDownload PDF (209K) -
(3) REACTIONS OF AMINO-END-GROUP OF NYLON WITH MONOFUNCTIONAL REAGENTSTakeshi Hashimoto1958 Volume 14 Issue 7 Pages 484-487
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSReactions of nylon with aldehydes, acid anhydrides, acid chlorides, nitrous acid, isocyanates, acrylonitrile and acrylic esters were investigated, and light resistance of nylon after the reaction was measured.
All reagents that reacted with amino-end-group of nylon did not improve light resistance of nylon. Acetic anhydride, phenyl isocyanate, acrylonitrile and acrylic esters gave marked resistance towards light.
It remained unsolved why amino-end-group of nylon had something to do with its ligh tresistance.View full abstractDownload PDF (245K) -
[in Japanese], [in Japanese]1958 Volume 14 Issue 7 Pages 488-490
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
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[in Japanese]1958 Volume 14 Issue 7 Pages 491-495
Published: July 10, 1958
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (374K)
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