巻号一覧
22 巻, 9 号
選択された号の論文の11件中1～11を表示しています
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第2報 スキン構造について 第3報 モデルフィルムによるスキン構造形成条件の検討大渕 覚, 藤原 新吾, 小林 邦二, 石川 正巳, 有元 平次1966 年 22 巻 9 号 p. 393-407
発行日: 1966/09/10
公開日: 2008/11/28
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上出 健二, 星野 津ぎ江1966 年 22 巻 9 号 p. 408-414
発行日: 1966/09/10
公開日: 2008/11/28
ジャーナル フリーIn this paper effect of molecular weight and of temperature of isothermal crystallization on the characteristics of the deformation and break-down of isotactic polypropylene spherulite was investigated over the range of temperature between -70°C and+145°C in connection with the mobility of polymeric chains in crystalline form and with macroscopic stretchability of films.
Two kinds of fractions of molecular weight of 2.64×105 and 1.03×106 were melted at 250_??_290°C, then, were isothermally crystallized at 120_??_150°C to get the well-developed spherulites. Film was stretched under the microscope.
Deformation and break-down process of spherulite were able to be phenomelogically classified into five peculiarities as follows: (1). Brittle break-down, (2). Fracture with the cleavage of interfacial boundary. (3). Break-down with necking. (4). Plastic deformation. (5). Large plastic deformation into fibrillike structure.
Comparing spherulites of different molecular weight which were crystallized under the same condition, the increase in molecular weight gave a tendency of occuring (4) and (5). Fractions of the occurrence of (4) and (5) within the total number of deformed or breaked-down spherulites increased with rising crystallization temperature for film of same molecular weight. Maximum frequency of occurrence of (5) was observed qualitatively at the dispersion temperature of crystalline part which was determined by the dynamic viscoelastic method. And at that temperature optimum stretchability was obtained. It became seen that at temperature below the dispersion temperature spherulite cannot undergo large deformation without destruction, and that there is actually much similiarity between polymers and metals in an enormous role of the properties and dimension of spherulite or crystal grain concerning to the character of displacemental deformation.抄録全体を表示PDF形式でダウンロード (976K) -
内山 修一1966 年 22 巻 9 号 p. 415-417
発行日: 1966/09/10
公開日: 2008/11/28
ジャーナル フリーAcrylonitirle polymer was dissolved by heating the polymer and dimethyl formamide for 1, 2 and 3hrs. at 50°C and then for 1, 2, 3 and 4hrs. at 80°C. Polymer concentration of the solution was 26 wt. %. Then the solution was kept at 50°C for 0, 2, 4 and 6 days and falling ball viscosity was measured. Viscosity increase up to 6 days was calculated.
The results obtained are as follows:
1) The dissolving time at 50°C has no influence upon solution viscosity.
2) The solution dissolved for longer time at 80°C has larger viscosity as well as larger viscosity increase after 6 days.抄録全体を表示PDF形式でダウンロード (196K) -
内山 修一1966 年 22 巻 9 号 p. 418-420
発行日: 1966/09/10
公開日: 2008/11/28
ジャーナル フリーConcentrated dimethyl formamide solution of acrylonitrile ploymer were treated at 50, 80, 100 and 120°C under an atmospheric pressure, 10, 30 and 50(kg/cm2.) gauge in an autoclave and the viscosity of the solution was measured at 50°C.
The results obtained are as follows:
1) The viscosity of the solution treated at 50, 80 and 100°C under high pressure do not show any considerable change.
2) The solution treated at 120°C under high pressure has lower viscosity than the solution treated under an atmospheric pressure.抄録全体を表示PDF形式でダウンロード (181K) -
内山 修一1966 年 22 巻 9 号 p. 421-426
発行日: 1966/09/10
公開日: 2008/11/28
ジャーナル フリーViscoelastic behavior and spinnability of acrylonitrile polymer solution in N, N-dimethyl formamide were measured at 50°C.
Dynamic viscosity and dynamic elasticity were measured with a rotational oscillational type viscoelastometer.
The results obtained are as follows:
1) The solution with higher concentration and larger ηsp/C of polymer has larger dynamic viscosity η′ and larger dynamic elasticity G′.
2) The spinnability increases as the polymer concentration and ηsp/C of polymer increase.抄録全体を表示PDF形式でダウンロード (363K) -
第3報 剛軟度試験機の試作ならびに測定上野 清一郎, 河野 吉雄, 近藤 浩通1966 年 22 巻 9 号 p. 427-433
発行日: 1966/09/10
公開日: 2008/11/28
ジャーナル フリーA new tester of stiffness was designed and experiments have been made to prove usefulness of this tester on nonwoven fabrics.
The principle of this tester is based on the “theory of long column” what is so called in “mechanics of materials”
Investigation of the unique properties of nonwoven fabrics which could not easily be measured by means of the conventional cantilever method and the heart-loop method, for example, the relation between the occurrence of the “snap” phenomena and the percentage of elastic recovery is made possible by this tester. The application of the tester would give some information in using and manufacturing nonwoven fabrics.抄録全体を表示PDF形式でダウンロード (396K) -
研究方法の展望と解説篠原 昭1966 年 22 巻 9 号 p. S251-S259
発行日: 1966/09/10
公開日: 2009/03/26
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大場 富美雄1966 年 22 巻 9 号 p. S260-S265
発行日: 1966/09/10
公開日: 2009/03/26
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河合 弘迪, 野村 春治1966 年 22 巻 9 号 p. S266-S273
発行日: 1966/09/10
公開日: 2009/03/26
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内藤 正1966 年 22 巻 9 号 p. S274-S280
発行日: 1966/09/10
公開日: 2009/03/26
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後藤 政夫1966 年 22 巻 9 号 p. S281-S284
発行日: 1966/09/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (352K)
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