巻号一覧
17 巻, 1 号
選択された号の論文の12件中1～12を表示しています
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第1報 糸条の嵩高性と繊維分布の光学的一測定法川崎 健太郎1961 年 17 巻 1 号 p. 2-10
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーA photometric method measuring the bulkness and the distribution of fibers in yarn is described. This method is based on the measuring the intensity of the transmitting light which is projected on a sample yarn through a narrow slit, and the above operation is repeated continuously moving the slit along the lateral direction of the yarn.
Some of morphological characteristics obtained by this method for some textured yarns are similar to those acquired by other methods.抄録全体を表示PDF形式でダウンロード (1650K) -
第1報 レーヨンステープルの日光脆化小竹 竜之助, 岡本 武久1961 年 17 巻 1 号 p. 11-16
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーThe degradation of various types of rayon staple on the sunlight and Fade-o-meter exposure was studied from the practical point of view. The following conclusions are obtained.
1. All types of the rayon staple tested showed similar degradation curves on sunlight exposure. The high tenacity rayon staple among them kept superior strength and elongation to other rayon staples after 400hr exposure.
2. Investigations on the strength and elongation data of the irradiated crimped dull rayon (CD) led to the establishment of good correlations between the time of Fade-o-meter exposure and the amount of sunlight irradiation.
The correlations could be expressed by the following empirical linear equations; - From strength data: y=21.7x From elongation data: y=16.7x where y: time of Fade-o-meter exposure (hr) x: amount of sunlight irradiation (Kcal/cm).抄録全体を表示PDF形式でダウンロード (382K) -
第2報 レーヨンステープル織物の日光脆化小竹 竜之助, 岡本 武久1961 年 17 巻 1 号 p. 16-20,11
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーStandard muslin (No.9 standard structure) was woven with each of high tenacity rayon staple, regular rayon staple and cotton. All fabrics were exposed to the sunlight for five month under the same conditions and results are compared.
Studies of the change in the dry and wet tenacity, dry and wet elongation, tear strength and flexing abrasion for the irradiated samples, when considerations are given primarily to their absolute values and secondary to the relative ones, showed a considerable superiority from practical standpoint of high tenacity rayon staple over cotton and regular rayon staple.抄録全体を表示PDF形式でダウンロード (388K) -
第XXXIX報 キャロット条件による集団としてみた諸物理性の変化池田 佐喜男1961 年 17 巻 1 号 p. 21-26
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーIn order to statistically test the effects on the physical properties by carrotting conditions, the random samplings of the test fibres were taken out of the carroted bulks. As the result, changes of the mechanical and frictional properties and crimps were detected. Therefore, the sampling and estimating methods employed will be useful for an analysis of the relations between the feltability and physical properties of the bulks.抄録全体を表示PDF形式でダウンロード (467K) -
第4報 アクリル酸メチル共重合体の紡糸性について安田 武1961 年 17 巻 1 号 p. 27-30
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーFiber was produced by the process in which copolymer of methyl acrylate containing acrylonitrile 92-100mol% was treated by spinning in butanol and by heat stretching in glycerin. Pure polyacrylonitrile did not produce the coagulation state in which adequate plasticity may be exhibiteb. Continuation of spinning was difficult, but copolymer containing a small quantity of methyle acrylate exhibited adequate plasticity, and stretching and winding were easy. For example, fiber witn tensile strength 3.6g/den. and elongation 14.8% was produced from 2mol% copolymer.抄録全体を表示PDF形式でダウンロード (316K) -
(V) Zn-ザンテート生成反応滝沢 章1961 年 17 巻 1 号 p. 31-36
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーRegarding the formation of Zn-xanthate from cellulose sodium xanthate, the fundamental study was made with xanthate model filaments. Influences of ZnSO4 concentration and temperature of reaction bath and filament diameter (a) on Zn-xanthate formation were investigated.
The results are as follows:
(1) Clear boundary line (radius ξ from center of filament at time t) appeares between Na-xanthate and Zn-xanthate.
(2) The higher the concentration of ZnSO4 in reaction bath is, the more quickly boundary line reaches to the center of the filament.
(3) In spite of the diameter changes of the filament, the relations of ξ/a_??_t/T (T: time until the boundary line reaches the center of filament) are drawn in one curve. The relation of T_??_a2 is straight.
(4) Regardless of the temperature of reaction bath, ξ/a_??_t/T relations are indicated by one curve; however, the value of T becomes smaller with rising temperature.
(5) With increase of cellulose content of the filament, the value of T increases.抄録全体を表示PDF形式でダウンロード (349K) -
(VI) Rapid Reactionをともなう拡散現象滝沢 章1961 年 17 巻 1 号 p. 36-43,31
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーIn this report, the theoretical consideration of phenomena of cylindrical diffusion with rapid reaction is undertaken. The relations between time and position of boundary line caused by rapid reaction, concentration distribution, and amount of diffusing substance are derived. Also, experimental formulas are set up, and their relations to the theory are investigated.
The theoretical and experimental formulas are applied to the experimental results (the previous report) on the formation of Zn-xanthate, and quantitative analysis is undertaken. From the examination at various temperatures, it is concluded that activation energy for the diffusion of ZnSO4 with Zn-xanthate formation is 3.5kcal/mol., which is about 60% of activation energy for ZnSO4 under normal diffusion.抄録全体を表示PDF形式でダウンロード (482K) -
第1報 硝酸精製の脱樹脂効果角 祐一郎, 古橋 宏1961 年 17 巻 1 号 p. 44-47
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーThe application of dilute nitric acid on the refining of unbleached birch sulfite pulp was studied. Treatments with dilute nitric acid and then a hot alkaline solution were_??_recognized to be effective on the removal of resin without much degradation of cellulose, if the acid concentration is about one percent. Following conditions are recommended: acid concentration 1.0_??_1.2%, temperature 90_??_96°C, time 2_??_3 hours. As the nitric acid treatment makes resin and lignin of pulp easily soluble in a hot alkaline solution, the condition of hot alkaline treatment after the acid treatment may be decided by the degree of refining necessary to the refined pulp. The nitric acid refining is more effective than the ordinary refining in deresination.抄録全体を表示PDF形式でダウンロード (382K) -
第2報 エマルジョン硫化溶解曲線とビスコースの濾過性との関係中尾 統一, 右田 伸彦1961 年 17 巻 1 号 p. 48-54
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーIn the previous paper, the relation between sulfidation and dissolution in emulsion xanthation of cellulose with varying amounts of carbon disulfide at the constant alkali concentration (S-W curve) was examined, and it was found that S-W curve can be charachterized by A3 and (A2/A3-1) A3 shows the average amounts of dissolved per unit amount of carbon disulfide during the reaction, and (A2/A3-1) shows the ununiformity of the S-W curve (see Fig. 1).
Studies are carried out to observe how the above characteristics of S-W curve are correlated to the state of solution of viscose and how the S-W curve should be characterized in relation to the filterbility of viscose.
The results obtained are as follows:
1) The filterbility of the viscose prepared by emulsion xanthation process (KWE) correlates to both A3 and (A2/A3-l). Value of KWE of the viscose prepared with an insuficient amount of carbon disulfide clearly depends on A3. The filter-clogging constant levelled off (KWE(levelled off)) correlates more to (A2/A3-1) than to A3, and the most closed correlation are found between KWE (levelled off) and K3. Here, K3 shows the dissolved distance per unit amount of carbon disulfide at the last stage of reaction during emulsion xanthation (see Fig. 1), and the dissolved distance is calculated from the amounts dissolved on the assumption given in the previous paper.
2) In the case of filterbility of viscose prepared by the conventional process (KW), the closed correlation is found between KW and (%-3), which is the amounts of the dissolved during the last stage of reaction of emulsion xanthation (see Fig. 1). No correlation is found between KW and A3 or (A2/A3-1).
From the above, the following conclusion can be drawn. S-W curve can be characterized by A3 and (A2/A3-1) as a measure of reactivity of dissolving pulp, and (%-3) can be calculated from S-W curve as a measure of filterbility of viscose prepared by the conventional process.抄録全体を表示PDF形式でダウンロード (476K) -
安田 武1961 年 17 巻 1 号 p. 55-59
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーThere are two methods of heat setting of nylon fabrics, i.e. dry heat setting and wet heat setting (steam setting). As a result of comparative examination, in respect of dyeing property, of the materials treated by those two methods, it was proved that diffusion velosity is higher, and absorbed quantity is larger in the materials treated by wet heat setting than in those processed by dry heat setting, even if those materials are equal in density. It was presumed that in the method of wet heat setting, due to the presence of water molecule, locomotion of molecule segment in amorphous region is easy, the growth of crystallit is conspicuous, the gaps between crystallits become large, and that in the method of dry heat setting crystallit increases in number rather than in volume, crystallits that are smaller than those in the method of wet heat setting are scattered in places, and gaps between crystallits become smaller.抄録全体を表示PDF形式でダウンロード (433K) -
秋山 四郎, 田中 稔, 向井 義治1961 年 17 巻 1 号 p. 60-66
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2862K) -
根岸 道治1961 年 17 巻 1 号 p. 66-74
発行日: 1961/01/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (699K)
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