巻号一覧
79 巻, 5 号
選択された号の論文の6件中1～6を表示しています
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平原 英俊, 會澤 純雄, 高橋 諭, 櫻庭 英樹, 秋葉 洋一, 成田 榮一, 森 邦夫2006 年 79 巻 5 号 p. 261-266
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーIntercalation products of crosslinking agents such as 6-R-1, 3, 5-triazine-2, 4-dithiol monoanion (R is a substituent) into Mg-Al layered double hydroxide (RTD/LDH) have been synthesized with the calcination-rehydration reaction using Mg-Al oxide precursors calcined at 500°C for 2h. RTD/LDH has been modified by anionic surface active agent (AS/RTD/LDH). These organic-inorganic nanohybrids have been characterized by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. Vulcanization reaction of chlorinated acrylic rubber by AS/RTD/LDH has been investigated for the scorch time, the apparent cure rate constant and the induction period by a swing die rheometer at 170°C. The basel spacing (003) was found to be 0.83nm for the intercalated product of 1, 3, 5-triazine-2, 4, 6-trithiol monoanion (TT/LDH) and 0.81nm for that of 6-dibutyl-1, 3, 5-triazine-2, 4-dithiol monoanion (DB/LDH), 0.78nm for the carbonate anion-intercalated LDH by XRD. The absorption peaks due to triazine ring (1580cm-1) and methylene (2950cm-1) were shown in the FT-IR spectrum of the TT/LDH and DB/LDH. These results indicate that TT or DB was intercalated into the LDH. The AS/RTD/LDH has shown the diffraction peak similar to the RTD/LDH. The induction period (t10) was 0.7-1min using 1, 3, 5-triazine-2, 4, 6-trithiol monosodium salt, in contrast to 10min using AS/TT/LDH. The crosslinking of chlorinated acrylic rubber using the AS/TT/LDH showed a proper induction period.抄録全体を表示PDF形式でダウンロード (915K) -
永田 員也, 日笠 茂樹, 西 勝志, 岩蕗 仁2006 年 79 巻 5 号 p. 267-270
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーThe influence of addition of low density polyethylene-block-Polyacrylate copolymer (PE-diblock) on the impact strength of ternary phase polypropylene (PP) composites containing ethylene-propylene-diene terpolymer (EPDM) and talc was investigated. The surface of talc was treated with 3-glycidoxypropyltrimethoxysilane (GPMS) in order to enhance the interaction between talc surface and the functional group (carboxy group) of the additive copolymers. The composites were prepared by twin-screw extruder. The impact strength of PP/EPDM (5wt%)/talc (30wt%) increased markedly with the addition of PE-diblock content up to 3wt% and about 40% impact strength improvement was achieved for the composite by the addition of PE-diblock. Scanning electron micrograph observation of PP/EPDM/PE-diblock/GPMS-treated talc composite suggested that the edges of talc particles were included in elastomer phase on the basis of interaction between PE-diblock and elastomer.抄録全体を表示PDF形式でダウンロード (3520K) -
平岡 教子, 逢坂 朋子, 横山 哲夫2006 年 79 巻 5 号 p. 271-276
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーThe effects of the network imperfections such as dangling chains or abnormally long network chains on the properties of model polyurethane networks were studied. NCO-terminated prepolymer prepared from poly (oxypropylene) glycol with molecular weight 1, 000 and 2, 4-tolylene diisocyanate were end-linked with trimethylolpropane (TMP). The R-values, the molar ratio of OH group of TMP to NCO group of prepolymer, were varied in wide range. It is expected that dangling chains will form for R<1 and long network chains for R>1. Sol fraction and network chain densities were determined. Sol-free specimens were obtained by careful drying of those attained equilibrium swelling. Glass transition temperature, stress relaxation, dynamic mechanical property, and energy loss in repeated stretching were measured for both the sol-containing and sol-free specimens. The results are as follows. The values of effective network chain density agreed with those calculated from the consideration of network formation for R<1 region, but exceeded for R> 1 region. Though the values of properties are related well with the network chain density, the data lie on different plots for R<1 and R>1 region. The results were discussed on the basis of network imperfections.抄録全体を表示PDF形式でダウンロード (1042K) -
砂田 潔2006 年 79 巻 5 号 p. 277-281
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーNovel synthesis method of silica-rubber composites were developed by sol-gel method with triethoxysilyl-modified polymer. This method could be applied to both of silica-SBR and silica-CR. In the both case of SBR and CR, mechanical properties such as tensile modulus were improved with an increase of the amount of modified polymer. SEM observation for these composites suggested that particle size of silica dispersed in unvulcanized rubber matrix became larger with the decrease of the silica content.抄録全体を表示PDF形式でダウンロード (8491K) -
国際合成ゴム生産者協会 , 極東部会技術委員会2006 年 79 巻 5 号 p. 282-289
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーPDF形式でダウンロード (3098K) -
2. 高分子薄膜の表面分析, 構造解析木村 愼一2006 年 79 巻 5 号 p. 290-296
発行日: 2006/05/15
公開日: 2010/03/12
ジャーナル フリーAdvanced analytical measurements which use synchrotron radiation, sum frequency generation and positron annihilation have been applied to the surface and fine structure analysis of thin polymeric films.
The outline of each measurement and applications to polymeric materials are explained briefly, and examples of measurements in thin polymeric films are shown.抄録全体を表示PDF形式でダウンロード (6822K)
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