Development of magnetic fluids using fluorocarbon oils

使用氟碳油的磁性流体的开发

• 批准号: 62550618
• 负责人: YOSHINO Norio
• 金额: $ 1.6万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550618/
• 关键词: magnetic fluids; metal organics; coupling agents; surfactants; magnetite; fluorocarbon oil; metal fluoroalkoxides; フッ素系オイル磁性流体; フッ素系オイル; メタルフルオロアルコキシド; チタンテトラフルオロアルコキシド; 無機物充填; チタン; ジルコニウム

1. Some of the tetrakis(fluoroalkyl) titanates and tetrakis(fluoroalkyl) silicates were prepared to obtain a basic information of the metal alkoxide including fluoro-substituted alkyl groups. These alkoxides were expected to be stable against moisture, because many compounds having the fluorocarbon chain possess the property of water repellency, but the products obtained were sensitive to moisture and decomposed to give metal oxide and alcohol.2. Three titanium acylates having fluorocarbon chains, (C_4H_9O)Ti[OCO(CF_2CF_2)nH]_3 (n = 2 or 3) and (C_4H_9O)Ti(OCOC_8F_<17>)_3, and three silicon acylates, (CH_3O)_2Si- [OCO(CF_2CF_2)_nH]_2 (n=2, 3 or 4) and (CH_3O)_2Si(OCOC_8F_<17>)_2 were prepared.3. The anionic surfactant having two fluorocarbon chains in one molecule [C_8F_<17>OCOCH_2CH(SO_3Na)COOC_8F_<17>] was prepared.4. The coupling agent which structured by (C_<10>F_<21>CH_2CH_2)(CH_3)Si(OCH_3)_2 was synthesized. The Si-C bonding is very stable against hydrolysis.5. The modification ability for the surface of magnetite particles was examined using these products obtained.6. Three titanium acylates and the anionic surfactant had the ability of surface treatment, but the treated magnetite particles did not disperse into fluorocarbon oils.7. The magnetite particles treated with silane coupling agent, (C_<10>F_<21>CH_2CH_2)- (CH_3)Si(OCH_3)_2, were well dispersed into an olefin structured by C_<10>F_<21>CH=CH_2, and the dispersion state showed the property of magnetic fluids.

1.制备了一些四(氟烷基)钛酸酯和四(氟烷基)硅酸盐，以获得含氟取代烷基的金属醇盐的基本信息。由于许多含氟碳链的化合物具有拒水性能，但所得产物对水分敏感，分解生成金属氧化物和醇，因此这些醇类化合物有望在潮湿条件下保持稳定。合成了三种含氟碳链的钛酰化物，(C_4H_9O)Ti[OCO(CF_2CF_2)NH]_3(n=2或3)和(C_4H_9O)Ti(OCOC_8F_&lt；17&gt；)_3，以及三种硅酰化物：(CH_3O)_2Si-[OCO(CF_2CF_2)_NH]_2(n=2，3或4)和(CH_3O)_2Si(OCOC_8F_&lt；17&gt；)_2。制备了一个分子中含有两个氟碳链的阴离子表面活性剂[C_8F_&lt；17&gt；OCOCH_2CH(SO_3Na)COOC_8F_&lt；17&gt；]。合成了由(C_&lt；10&gt；F_&lt；21&gt；CH_2CH_2)(CH_3)Si(OCH_3)_2构筑的偶联剂。Si-C键对水解性非常稳定。利用得到的产物考察了磁铁矿颗粒的表面改性能力。三种钛酸酯和阴离子表面活性剂具有表面处理能力，但处理后的磁铁矿粒子不能分散到碳氟油中。用硅烷偶联剂(C&lt；10&gt；F_&lt；21&gt；CH_2CH_2)-(CH_3)Si(OCH_3)_2处理的磁铁矿粒子在C_&lt；10&gt；F_&lt；21&gt；CH=CH_2结构的烯烃中分散良好，分散状态表现出磁性流体的性质。

项目成果

Norio Yoshino,Junko Tomita,Hidefumi Hirai: "“Syntheses and Reactions of Metal Organics.XIII.Syntheses of Fluoroalkyl and Fluoroaryl Titanates"" Bull.Chem.Soc.Jpn.62. 2208-2212 (1989)

Norio Yoshino、Junko Tomita、Hidefumi Hirai：““金属有机物的合成和反应。XIII.氟烷基和氟芳基钛酸酯的合成””Bull.Chem.Soc.Jpn.62.2208-2212 (1989)