巻号一覧
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21 巻, 7 号
選択された号の論文の7件中1～7を表示しています
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片山 篤1967 年 21 巻 7 号 p. 375-384
発行日: 1967/07/01
公開日: 2009/11/11
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岩崎 武, 臼田 誠人, 冨崎 之夫, 岩崎 東一, 中野 準三, 右田 伸彦1967 年 21 巻 7 号 p. 385-392
発行日: 1967/07/01
公開日: 2010/11/19
ジャーナル フリーA special handsheet-making apparatus, in which the velocity component of the pulp suspension is parallel to the forming wire, was constructed. The tensile properties of the fiber oriented handsheets were compared with those of the TAPPI standard handsheets. Holocellulose and sulfate pulp of softwood were also used for making handsheets. The fiber angle distribution φ (θ) was expressed in Fourier series :
φ (θ) =1+α1cos 2θ+α2 cos 4θ+α3 cos 6θ+…
The coefficientsα1 andα2 were used for the characteristic values of the fiber orientation. It was found that the fiber orientation of the sheet prepared from holocellulose was higher than that of sulfate pulp.
Astress-strain curve at a constant rate of elongation was normalized in such a way that the stress at 1mm elongation (2% strain) was one unit. Such a normalized curve was called a master curve. The master curves of the sheets prepared from the same pulp are almost the same irrespective of the degree of fiber orientation. The master curves in the machine and cross directions are also the same one.
Namely, it may be possible to express the stress-strain curve by the shape of master curve, the stress at the constant strain and the ultimate strain. The value of f/w is the stress (at 2% strain) divided by the weight of test strip. The value of (f/w) r is the ratio of f/w of machine direction to that of cross direction, and it represents the degree of anisotropy of the sheet. The (f/w) r of the sheet treated with resins (melamine resine and polyvinyl acetate resin) is lower than that of the untreated sheet. The ultimate strain has no relation to the fiber orientation.抄録全体を表示PDF形式でダウンロード (1081K) -
鉛蓄電池に対するリグニンの効果林 晄, 名村 好文1967 年 21 巻 7 号 p. 393-396
発行日: 1967/07/01
公開日: 2009/11/11
ジャーナル フリーIn order to investigate an effect of lignin to lead storage batteries, attempt was made to set up a lead-acid cells having a small capacity. Then the effects of many lignin model compounds were investigated with the cells.
As the results (Table 1), it was found that catechols and guaiacyl compounds were available for increasing in capacity, but benzoic acid derivatives, phenols, surfactants and conjugated, unsaturated, dicarboxylic acids such as muconic acid were unavailable. Catechol (and also pyrogallol) groups were proposed to the active groups in lignin molecule for increasing the capacity. Guaiacyl (and also syringyl) groups in lignin were supposed to be demethylated to generate the catechol (and pyrogallol) groups during the charging-discharging process.
By means of microscopic investigations, the surface of cathode was found to be made finely spongy with addition of lignin. Single-electrode potencial was not varied both in cathode and anode with addition of lignin. Therefore, the process of lignin was supposed to an increase in surface area of cathode through a fining the crystalls of active material resulting in increase in cell capacity.抄録全体を表示PDF形式でダウンロード (4079K) -
荻原 允隆, 荻原 幸江1967 年 21 巻 7 号 p. 397-400
発行日: 1967/07/01
公開日: 2009/11/11
ジャーナル フリーWhen alkali cellulose is leaved in air, its degree of polymerization decreases gradually by oxidation. In this paper the effect of ferric and cupric salt and the action of chelating agent on the deterioration of weak basic CMC-Na were studied. The results were as follows :
1) The deterioration of CMC-Na was not affected by ferric salt but accelated notably by cupric salt.
2) The deteriorating reaction of CMC-Na with or without cupric salt was prevented remarkably with chelating agent “EDTA”.
3) Since the major part of decrease in specific viscosity was prevented with chelating agent “Oxine” on CMC-Na with no cupric salt, it is conceivable that many other metals, which act as a catalyst to the deterioration, must be contained in the original sample.
4) The preventive effect to the deterioration was not proportional to the amount of application, but varied with the kind of chelating agent.抄録全体を表示PDF形式でダウンロード (617K) -
ポリアクリル酸ヒドラジドについて町田 誠之, 荒木 幹夫, 榊原 敏之1967 年 21 巻 7 号 p. 401-406
発行日: 1967/07/01
公開日: 2009/11/11
ジャーナル フリーPolyacrylamide was reacted with hydrazine hydrate to give polyacrylic hydrazide. Analysis of polyacrylic hydrazide was investigated, and a method of quantitative analysis was established by using iodometry.
Using the analytical method, the reaction of the synthesis of polyacrylic hydrazide in various conditions was discussed. In the reaction of polyacrylamide with tenfold amount of hydrazine hyderate at the temperature of 5055°C, the degree of hydrazidation was found to attain the highest value of about 85% in the reaction time of six hours, and the similar value of the reaction degree was obtained in about two hours at 7075°C. At higher temperature than these, however, the degree was rather found to drop by some side reactions.
Polyacrylic hydrazide is soluble in water and serves as a cationic polyelectrolyte. The solution viscosity of polyacrylic hydrazide was found to increase with the degree of hydrazidation.
It was found in paper making that polyacrylic hydrazide hydrochloride is effective to retaining of size and filler on pulp fibers and to increase the strength of paper.抄録全体を表示PDF形式でダウンロード (899K) -
(設計理論を中心として)小野 藤男1967 年 21 巻 7 号 p. 407-414
発行日: 1967/07/01
公開日: 2009/11/11
ジャーナル フリー1.By applying the method of single sampling inspection plans with screening after cutting operations and introducin gsome other plans of rationalizing finishing operations, we have been getting next merits.
a) Quality insurance of finished products.
b) Strengthening of quality control.
c) Improvement in the efficiency of sheets sorting operations.
d) Decrease in finishing waste.
2.We designed the sampling inspection plans after cutting process as follows :
First of all, we calculated n (sampling number) and c (acceptance number) nsuring AOQL (Average Outgoing Quality Limit) 1%, as the level of outgoing quality and besides minimizing the inspection cost [I'=n+b/a (N-n) {1-L (p)}] at an average percentage defective of process p.
Then we adopted a stratified sampling method on each reel in order to be able to feed back the results of the inspections to the manufacturing process.
3.The other things carried out :
a) The final sampling inspection of finished products for the quality insurance.
b) An inspection on sorting broke about the rate of taking no defective sheets.
c) Making use of critical defect specimens on the inspections.
d) The education and training of the finishing employee.
e) Making out a feed back system for the inspection results to the manufacturing process.
f) Investigations of finishing efficiency.抄録全体を表示PDF形式でダウンロード (1084K) -
村島 純一1967 年 21 巻 7 号 p. 415-418
発行日: 1967/07/01
公開日: 2009/11/11
ジャーナル フリーPDF形式でダウンロード (765K)
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