巻号一覧
14 巻, 3 号
選択された号の論文の13件中1～13を表示しています
- |<
- <
- 1
- >
- >|
-
上野 明1958 年 14 巻 3 号 p. 131-132
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (185K) -
第2報 アクリロニトリル-塩化ビニリデン共重合体繊維の熱処理について 第3報 アクリロニトリル-塩化ビニリデン共重合体繊維の延伸熱処理機構について岡村 勲1958 年 14 巻 3 号 p. 133-141
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (618K) -
第1報 見かけ粘度に影響する因子について祖父江 寛, 浅岡 宏, 近野 元輔1958 年 14 巻 3 号 p. 142-147
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリー1. Alkaline slurry of various pulp fibers was prepared and its apparent viscosity was measured by the Brookfield-type revolving viscosimeter, in order to examine the nature of this type of apparent viscosity. The apparent viscosity measured in the present study was found to be affected greatly not only by the individual frictional resistance of each pulp fiber, but also by the frictional resistance of the collected fibers.
2. The apparent viscosity of pulp fiber slurry suspension has a specific characteristic of temperature dependence, the apparent viscosity increasing with rise in temperature. Relationship between this temperature dependance of apparent viscosity and of degree of swelling by weight of the fiber in alkali was noted. It seemed that in one kind of fiber, the action of morphological factor, such as fiber surface, on the degree of swelling by temperature greatly affects apparent viscosity.
3. Examination with classfied pulp fibers with different length indicated that the effect of fiber length and its distribution is extremely marked.
4. A very dilute suspension of pulp in alkali was prepared and its viscosity was measured while observing the behavior of the fibers. As a result, an interesting phenomenon was found and facts stated in Section I above was confirmed.抄録全体を表示PDF形式でダウンロード (486K) -
第1報 硫化度の蒸解およびパルプ品質におよぼす影響佐藤 詢一, 下田 功1958 年 14 巻 3 号 p. 148-154
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーRed pine and birch were cooked by the sulphate process under the conditions that the active alkali (expressed as Na2O) -to-wood ratio was kept constant at 20% and the sulphidity of the cooking liquor varied from 0 to 100% sulphidity at various times. The chemical and mechanical properties of the pulp of the same yields were studied within the range of semichemical and chemical pulp.
The results obtained are as follows:
1. To obtain the same yield, the cooking in 30 to 50% sulphidity requires the shortest cooking time. However, the sulphidity has no marked influence upon the cooking time to obtain the same yield in the range of semichemical pulp. (Fig. 2)
2. In the case of red pine, value of lignin content in the pulp made at 75% sulphidity is the smallest and in the case of birch the pulp made at 100% sulphidity is the smallest. (Fig. 3)
3. Relation between sulphidity and Roe number of pulp is similar to that of sulphidity and lignin contents. (Fig. 4)
4. Pentosan content in the pulp of the same yield becomes larger with increased sulphidity (Fig. 5)
5. The paper of red pine pulp which is made at 50 to 75% sulphidity has the highest value of breaking length, and that of birch pulp which is made at 15 to 50% has the highest value. (Fig. 6)
6. The paper made of red pine pulp has higher value of burst ratio with increased sulphidity, and that of birch pulp has higher value of burst ratio with increase up to 50% sulphidity and the value is unchanged beyond 50%. (Fig. 7)
7. The papers of red pine and birch pulps which are made at 30 to 75% sulphidity have the highest value of folding endurance. But, in the semichemical pulp, its value is almost unchangable except at 0% sulphidity.
Summary: The cooking at 30 to 50% sulphidity is effectine for shortening cooking time and improving properties of the pulp.
Provided that active alkali-to-wood ratio is kept constant and sulphidity is varied, we can get two sorts of pulp having the same yield, and one of these has a larger content of lignin and smaller content of pentosan while the other has smaller content of lignin and larger content of pentosan. Because of this fact, it is important to note whether the sulphidity used in making unbleached pulp is suitable or not for making the bleached pulp.抄録全体を表示PDF形式でダウンロード (518K) -
第3報 p-サイメンの硝酸2段酸化祖父江 寛, 斎藤 吉民1958 年 14 巻 3 号 p. 155-157
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーThe two-stage oxidation method of p-cymene was studied with the object of the preparation of terephthalic acid.
In the first stage, amounts of 10g. p-cymene were oxidized with 50cc of 40% nitric acid at 95_??_100°C for 1hr. in an open bottle dipped in oil bath and then the products were transfered to a seald tube containing 50cc of 40% nitric acid and was heated at 125°C for 3hrs. (maximum pressure; about 3.2kg/cm2). In these experiments, the maximum yield of terephthalic acid was 74.7%.
From the analysis of the first stage products, it was found that the main products in the first oxidation were p-toluic acid and p-methylacetophenone. The mixtures of p-toluic acid and p-methylacetophenone at various ratio were oxidized under the same conditions as the second oxidation. In these experiments the larger amount of p-methylactophenone in the mixture the larger is the yield of terephthalic acid. From these results, it was found that the best yield of terephthalic acid in the second oxidations is obtainable by oxidizing the first oxidation products which has the maximum contents of p-methylacetophenone.抄録全体を表示PDF形式でダウンロード (207K) -
第9報 シャツトルから緯糸を静かに引き出すときの緯管曲面に対する緯糸のからみ付きについて 第10報 緯糸と緯管との間に生ずる摩擦抵抗の計算久世 栄一1958 年 14 巻 3 号 p. 158-164
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (523K) -
第7報 ストレッチヤーンの構造について中里 恵一, 松田 和夫, 淵野 桂六1958 年 14 巻 3 号 p. 165-169
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーThe number of twist, and the untwisting moment of a spring with different helical angle, made by nylon fish line, are measured by the usual moment tester, for the study of the mechanism of the stretched yarn.
The results obtained by previous investigation may be explained by the following considerations;-
(1) The fact that early in its untwisting operation reverse twists that appear, may be explained by the energy that the reverse twists have lower energy tha untwisted normal twist.
(2) The results that the sum of normal and reverse twists are always kept constant until all the normal twists change to reverse twists are derived from the constant helical angle throughout in the constant length untwisting.抄録全体を表示PDF形式でダウンロード (280K) -
第6報 織物の曲げ剛さの異方性について呉 祐吉, 篠原 昭, 松橋 房江1958 年 14 巻 3 号 p. 170-174
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリー(1) The stiffness of textile fabrics depends upon its bending directions, and in general the stiffness in bias directions is relatively small.
(2) In so far as the bending is concerned, the fabrics are like 2-plywood but when woven into typical ribs in one direction they become like in mono-plywood.
(3) The stiffness in any directions may by expressed as following, (EI)θ=(EI)w sin4θ+(EI)F cos4θ
where, (EI)w and (EI)F are flexible rigidity in the warp and weft ways respectively, and θ the angle with the warp.
The mean value of EI in any directions (EI)m=3/8{(EI)w+(EI)F}
It is imossible to apply this simple formula to all kinds of fabrics. In general the balanced plain clothes is governed by this formula.抄録全体を表示PDF形式でダウンロード (353K) -
第XIX報 Hg(NO3)2-HNO3-NaNO2系キャロッティング条件と重量増加との関係池田 佐喜男, 岡島 三郎1958 年 14 巻 3 号 p. 175-182
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーIt has been recognized that the weight of the fur increased during the carrotting, so the effect of each factor was examined precisely under the following conditions: The experiments were designed by means of 5×5 Hyper Graeco-Lation Square and L27 (313). The weight increase of the sample fur was determined after carrotting (immersing, squeezing by centrifuge, drying at 95°C for 30min.), washing and drying to constant at 95°C.
The following results were obtained:
(1) The weight increases linearly with the concentrations of HNO3 and NaNO2 of the reagent and the immersion time.
(2) It increases also quadratically as the immersing temp. rises.
(3) The effect of Hg(NO3)2 (0.5_??_4.5%) upon the weight increase is not significant at 5% level.抄録全体を表示PDF形式でダウンロード (575K) -
第5報 分子化合物あるいはその縮合体による染色山田 仁穂, 四宮 知郎1958 年 14 巻 3 号 p. 183-187
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーSome mixture of substance which forms a molecular compound or its condensation product, such as trinitrobenzene-α-naph thylamine or chloranyl-benzidine, was heated with fiber in water.
In the case of molecular compound formation, dyeing of synthetic fibers such as vinylon and vinyl chloride sheet was possible, though their light fastness was not so high.
Condensation type however showed more usefulness in both natural and synthetic fibers.
As the result of these condensation-dyeing of 5 quinones and 14 amines, p-quinones were better than their o-isomers, chloranil inferior to p-benzoqinone for cellulose fiber, and aromatic primry diamines, having conjugated double bonds, were better than the non-conjugated. Aliphatic amines, secondary and tertiary amines are inferior to aromatic primry ones. The presence of acid groups increases water solubility and levelling power, but usually reduces affinities.
The range of hue in these series was found to be from 570 to 620 mμ in dominant wave length.抄録全体を表示PDF形式でダウンロード (340K) -
行方 寅次郎1958 年 14 巻 3 号 p. 188-191
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (299K) -
加藤 雅樹1958 年 14 巻 3 号 p. 191-192
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (129K) -
籏野 晃1958 年 14 巻 3 号 p. 193-196
発行日: 1958/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1687K)
- |<
- <
- 1
- >
- >|