HYBRIDIZATIOF OF NNON-EXPANDABLE LAYERED SILICATE NANOSHEETS

不可膨胀的层状硅酸盐纳米片的杂交

• 批准号: 18550184
• 负责人: KENJI tamura
• 金额: $ 1.89万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18550184/
• 关键词: nanosheet; nanocomposite; polymer; non-expandable; layered silicate; morphology; ナノ物質; 複合材料・物性; 層間化合物; インターカレーション; セリサイト; 剥離; 高分子複合材料

A new natural mica /polymer nanocomposite was formed through the exfoliation of a mica layer. The natural mica used was a non-expandable potassium sericite (K-SE) whose interlayer was saturated with potassium cations. Powdered samples were separated through an air-classifier into D_<50>:13.6 μm (its median particle diameter), D_<10>:7.9 μm, and D_<90>:23.7 μm. An organophilic SE was prepared by an ion exchange reaction between the SE powder and alkylammonium solutions of various initial concentrations. As a typical procedure to forming a completely organically modified sample, the K-SE powder was treated with the highest alkylammonium concentration. This corresponded to an alkylammonium+/k+ mole ratio=10.0 which was kept at 90℃ for four days.The nanocomposites were prepared by dispersing the organophilic SE in an epoxy resin (diglyxidyl ether of bisphenol-A, DGEBA) with subsequent curing in the presence of nadic methyl anhydride (NMA) and benzyldimethylamine (BDMA) at 120-180℃. Conside … More rable exfoliation of the organically modified SE was achieved at a curing temperature of 180℃. The morphology of the nanocomposite showed silicate nanolayers with extremely high aspect ratios that are at levels several dozens to hundreds of times greater than that of conventional exfoliated clay-polymer nanocomposites.Moreover the resulting organically modified SE was also melt-kneaded with PA6 in a twin-screw kneader at 260℃. The morphology of the nanocomposite was shown to have mica nanolayers with very high aspect ratios ; that is, at levels about two times greater than that of conventional exfoliated clay-polymer nanocomposites. A small amount of organically modified SE with 2.5 wt% silicate was enough to improve flexural properties and heat distortion temperature of the nanocomposite. However the total mechanical properties were not completely improved, because the shearing stress that arose during exfoliation of silicate layers created the dispersion inhomogenously of silicate platelet in the matrix. The present study already indicates that three factors, exfoliation degree, aspect ratio and dispersion homogeneity of silicate platelet play important role for development of high performance of nanocomposite. Less

通过去角质的云母层形成了一种新的天然云母 /聚合物纳米复合材料。所使用的天然云母是一种不膨胀的钾盐岩（K-SE），其中间层被钾阳离子饱和。将粉末状样品通过空气分类器分离为D_ <50>：13.6μm（其中值颗粒直径），D_ <10>：7.9μm，D_ <90>：23.7μm。通过各种初始浓度的SE粉末和烷基铵溶液之间的离子交换反应制备有机SE。作为形成完全有机修饰样品的典型程序，将K-SE粉末用最高的烷基铵浓度处理。这对应于烷基铵+/k+摩尔比= 10.0，该比率= 10.0，该烷基含量为90℃，持续四天。纳米复合材料是通过将有机SE分散在环氧树脂（双苯酚-A的二酰基乙醚中）中的纳米复合材料来制备，随后在curling curling curling（dgeba，dgeba，dgeba，dgeba，dgeba），均具有非甲基甲基（NMAIN）甲基（NMA）甲基甲基（NMAIM）（NMAIM）（NMA）（NMAIM）（NMAIM）（NMAIM）（NMA）。 120-180℃。认为……在180℃的固化温度下实现了有机修饰的SE的更多截止性剥离。纳米复合材料的形态显示，具有极高纵横比的硅胶纳米层，其水平比传统的去角质去角质粘土 - 聚合物纳米复合物的水平高几十至数百倍。此外，由此产生的有机修饰的SE在2600°的双螺纹雪地中也与PA6融化了PA6。纳米复合材料的形态显示为具有很高纵横比的云母纳米层。也就是说，比常规去角质粘土聚合物纳米复合材料的水平高两倍。用2.5 wt％的硅酮有机修饰的SE少量足以改善纳米复合材料的弯曲特性和热失真温度。然而，总的机械性能并未完全改善，因为在硅酮层去角质期间产生的剪切应力产生了基质中有硅硅血小板的分散体。本研究已经表明，有机硅血小板的剥落程度，纵横比和分散性均匀性在纳米复合材料的高性能开发中起重要作用。较少的

项目成果

Synthesis of Novel Silicate Nonosheet Assemblage for Functional Materials / Synthesis of Novel Silicate Nonosheet Assemblage for Functional Materials

功能材料用新型硅酸盐非片状组合体的合成 / 功能材料用新型硅酸盐非片状组合体的合成

• 发表时间: 2007
• 作者: Kenji Tamura;Hikaru Uno;Hirohisa Yamada;K.Tamura,H.Uno,H.Yamada;H.Yamada,K.Tamura,K.Ozawa,Chelo S.Pascua,H.Uno;Chelo Supnet Pascua H.Yamada,K.Tamura;K.Tamura,H.Uno,H.Yamada;H.Yamada,K.Tamura,Chelo S.Pascua,S.Yokoyama;Chelo S.Pascua,K.Tamura,H.Yamada;Chelo S.Pascua,H.Yamada,K.Tamura,T.Sato;田村堅志,井伊伸夫,山田裕久,八田珠郎,倉嶋敬次;山田裕久,田村堅志,Chelo S.Pascua,横山信吾,八田珠郎;Chelo S.Pascua,K.Tamura,H.Yamada;K.Tamura,H.Yamada;H.Yamada,K.Tamura,Chelo S.Pascua,S.Yokoyama
• 通讯作者: H.Yamada,K.Tamura,Chelo S.Pascua,S.Yokoyama

The d-block phyllosilicates: Synthetic Nanocrystalline Transition Metal Smectite Clays

d 区层状硅酸盐：合成纳米晶过渡金属蒙皂石粘土

• 发表时间: 2007
• 作者: Kenji Tamura;Hikaru Uno;Hirohisa Yamada;K.Tamura,H.Uno,H.Yamada;H.Yamada,K.Tamura,K.Ozawa,Chelo S.Pascua,H.Uno;Chelo Supnet Pascua H.Yamada,K.Tamura
• 通讯作者: Chelo Supnet Pascua H.Yamada,K.Tamura

Possible Mechanisms in the Formation of Nanocrystalline Smectite From Low Temperature Dilute Aqueous Solutions

低温稀水溶液形成纳米晶蒙脱石的可能机制

• 发表时间: 2007
• 作者: Kenji Tamura;Hikaru Uno;Hirohisa Yamada;K.Tamura,H.Uno,H.Yamada;H.Yamada,K.Tamura,K.Ozawa,Chelo S.Pascua,H.Uno;Chelo Supnet Pascua H.Yamada,K.Tamura;K.Tamura,H.Uno,H.Yamada;H.Yamada,K.Tamura,Chelo S.Pascua,S.Yokoyama;Chelo S.Pascua,K.Tamura,H.Yamada;Chelo S.Pascua,H.Yamada,K.Tamura,T.Sato
• 通讯作者: Chelo S.Pascua,H.Yamada,K.Tamura,T.Sato

SYNTHESIS AND CHARACTERIZATION OF Zn-SUBSTITUTED SAPONITE (SAUCONITE)

• DOI: 10.11362/jcssjclayscience1960.13.75
• 发表时间: 2006-12
• 期刊: Clay science
• 作者: S. Yokoyama;K. Tamura;T. Hatta;S. Nemoto;Yujiro Watanabe;H. Yamada

層状ケイ酸塩/ポリマーナノコンポジットの開発

层状硅酸盐/聚合物纳米复合材料的开发

• 发表时间: 2006
• 期刊: Journal of the Society of Inorganic Materials, Japan 13
• 作者: Tamura;K.;Uno;H.;Yamada;H.;S.Yokoyama,K.Tamura,T.Hatta,S.Nemoto,Y.Watanabe,H.Yamada;H.Yamada,K.Tamura,S.Yokoyama,Y.Watanabe,;田村堅志,山田裕久
• 通讯作者: 田村堅志,山田裕久