巻号一覧
12 巻, 6 号
選択された号の論文の13件中1～13を表示しています
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星野 孝平1956 年 12 巻 6 号 p. 367-368
発行日: 1956/06/10
公開日: 2008/11/28
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第1報 羊毛繊維の応力緩和石川 欣造1956 年 12 巻 6 号 p. 369-374
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーRelaxation curves of wool fiber streched 10-25 per cent in aqueous media and phenol solution have been firstly determined. A conditioning temperature of 50°C was chosen, being as high as can be used without chemically damaging the wool fiber. Conditioning for half an hour at this temperature between measurements resulted in reproducible relaxation curves, as long as the period of extention of the fiber did not exceed 30 per cent.
An apparatus used is constructed with the magnetostriction constructed for measuring the relaxation of stretched fiber. The output from the strain meter is applied to inkwriting oscillograph from the start for 10 seconds and after this time range value of valve voltmeter was measured.
From the relaxation curves the reciprocal absolute temperatures corresponding to each test and the time required to attain the stress of 3.5×105g/cm2_??_4.75×105g/cm2 are obtained. The points for each specified stress are seen to lie in straight line. From the slope of these lines, the energies of activation for relaxation process in water are found from each deformation (15, 20 and 25 per cent) to be approximately 10Kcal, 20Kcal and 25_??_30 Kcal.
The amount of breaking of hydrogen bonds depends on the concentration of phenol solution and temperature. With increasing temperature and concentration of phenol solution the rate of the stress relaxation becomes smaller than under the wet condition. Supplementary measurements of relaxation at various humidity were perfomed during 1/10sec_??_3000sec appling the former method. The each relaxation curve may be shifted log time scale and master relaxation curve may be constructed.抄録全体を表示PDF形式でダウンロード (395K) -
第6報 クリープ曲線の総合化祖父江 寛, 高橋 正夫1956 年 12 巻 6 号 p. 375-378
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーWe measured the creep of polyvinyl chloride fibers at 20°C and 40°C, and constructed the master creep curves by basing the key to the procedure for generalization upon O'Shughnessy's assumption that there exist an invariant pattern in logarithmic time for the entire delayed elongation process but that the time scale of the response, as well as its magnitude is dependent on stress.
The characteristic retardation times, Log τ, plotted as function of stresses, decreased linearly as stresses increased. The instantaneous elastic elongation E0, plotted as function of stresses, increased linearly where stresses (S) were relatively small, but these relations between E0 and S deviate from linear relations where stresses were relatively large and these deviations suggested the structural change in PVC fibers. The reciprocals of scale factors, 1/f, plotted as function of stresses well indicate the stress dependence of retarded elastic deformation of PVC fibers.抄録全体を表示PDF形式でダウンロード (239K) -
第20報 エマルジョン硫化における繊維素の溶解藤井 光雄, 小谷 卓也, 舟津 和夫1956 年 12 巻 6 号 p. 379-384
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーInvestigations were made on the dissolution rate of rayon pulp fibers, original and degraded, and the amount of amorphous regions in undissolved fibers in emulsion xanthation. The dissolution process of fibers was also observed microscopically.
The results are as follows:
a) The lower the degree of polymerization is, the higher the rate of dissolution becomes, and the range of optimum alkali concentration for dissolution becomes wide.
b) The amount of amorphous regions in undissolved fibers increases during xanthation, and is maximum when alkali concentration is about 10%.
c) Although xanthation reaction occurs only at the contact points of CS2 droplets with fibers, occasional contacts are sufficient for the progress of xanthation. For this reason viscose-formation by simultaneous reaction in emulsion form takes place.抄録全体を表示PDF形式でダウンロード (1243K) -
第2報 セミケミカルパルプの漂白下田 功, 佐藤 詢一, 大淵 陽三1956 年 12 巻 6 号 p. 385-391
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーWe have bleached the sodiummonosulfite semichemical Japan beech pulp with hydrogen peroxide and by three-stage bleaching (chlorine, sodium hydroxide, calcium hypochlorite).
Taking the bleached semichemical beech pulp and bleached kraft pulp of beech, their mechanical strengthes were compared when bleached semichemical or bleached kraft pulp of beech were mixed with bleached sulfite pulp of red pine.
(1) When hydrogen peroxide is used as a reagent, the bleaching is most effective where 1% hydrogen peroxide is consumed by pulp. In Japan, on account of high market price of hydrogen peroxide, the elevation of brightness from 40 to 60 seems to be the economical limit.
(2) To elevate the brightness from 40 of the unbleached semichemical pulp to 80, it may be performed economically only by the three-stage bleaching.
(3) In the case of three-stage bleaching; By the first process by chlorine treatment, about 70% of lignin contained in the unbleached semichemical pulp is dissolved, but the dissolving of pentosan and other carbohydrates are not observed. By the second process with sodium hydroxide treatment, a certain amount of lignin, pentosan and other carbohydrate are dissolved. At the third-process with bleaching powder, the dissolution of lignin and pentosan was observed, but not the dissolution of other carbohydrate.
(4) The mechanical strengthes of the semichemical pulp bleached by the three-stage process are about 20% higher than those of the unbleached semichemical pulp.
(5) In the case of bleached semichemical pulp and the bleached kraft pulp having the same brightness, the mechanical strength of the former is two times stronger than that of the latter.
(6) In the case of mixing the bleached kraft pulp in the bleached sulfite pulp, the larger the content of the bleached kraft pulp is, the more the mechanical strength of the paper from the mixed pulp decreases, but the mixing of the bleached semichemical pulp shows the contrary result.抄録全体を表示PDF形式でダウンロード (481K) -
白樫 侃, 石川 欣造1956 年 12 巻 6 号 p. 392-397
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーTire cords, whose results are known through the vibrator and rotor tests, are investigated by following ordinary mechanical tests:
For single fiber from the cord;
1, tensile test (room temperature and 110°C) and Young's modulus (static). For fatigued fiberafter vibrator test;
1. tensile test and Young's modulus (static). For cord;
1. tensile test (room temperature and bone dry) and Young's modulus.
2, creep and recovery.
3. repeated elongation tensile test (normal condition and bone dry).
Good correlation for the fatigue tests is obtained in following tests:
Tensile test for single fiber and cord at normal conditions, creep recovery for cord, and repeated elongation tensile test at normal condition.
Recovery mechanism for mechanical deformation of fiber contribute to fatigue life of the rotor and vibrator tests.抄録全体を表示PDF形式でダウンロード (467K) -
第6報 速度変換点分布の形態について 第7報 総括一野 周一, 後藤 秀雄, 黒崎 新也1956 年 12 巻 6 号 p. 398-404
発行日: 1956/06/10
公開日: 2008/11/28
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第16報 樹脂加工織布の最有効熱処理時間の判定法(その1) 第17報 樹脂加工織布の最有効熱処理時間の判定法(その2)祖父江 寛, 池 潤泰, 村上 謙吉1956 年 12 巻 6 号 p. 405-411
発行日: 1956/06/10
公開日: 2008/11/28
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第8報 ピコリンベタイン塩酸塩を触媒とする加工法(1)加工条件について飛田 昌雄1956 年 12 巻 6 号 p. 412-417
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーIn the previous reports, I reported that picoline-monochlor acetic acid was an excellent latent catalyst for the crease resistant finish with urea formaldehyde resin and obtained the patent for the method was described above.
In this report, the application of this method, i.e., the baking conditions, the concentration of resin solution, the composition and the amounts of the catalyst and the elapsed standing times of resin solution were studied as the preliminary experiment in the practical case, and I found that the method gave good effects of the above properties for the treated fabric and could be applied to the industrial operation.抄録全体を表示PDF形式でダウンロード (403K) -
第1報 アセテートの染色性とその熱力学的考察について 第2報 アセテートの染色性に及ぼす繊維の転換点の影響について楠瀬 正致, 小田島 耕一1956 年 12 巻 6 号 p. 418-424
発行日: 1956/06/10
公開日: 2008/11/28
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内海 保次, 小川 利彦, 沢田 明1956 年 12 巻 6 号 p. 425-429
発行日: 1956/06/10
公開日: 2008/11/28
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土林 貞雄, 塩谷 弘, 河井 和男1956 年 12 巻 6 号 p. 430-433
発行日: 1956/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (239K) -
1956 年 12 巻 6 号 p. 440
発行日: 1956年
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (91K)
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