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Preparation method of oriented carbon nano tube/ polymer composite membrane

A technology of oriented carbon nanotubes and carbon nanotube arrays, which is applied in the field of preparing oriented carbon nanotubes/polymer composite films, can solve problems such as easy aggregation, degradation of material mechanical properties, and enhanced van der Waals interaction between tubes, achieving good tube diameter and distribution density, simple preparation process, and excellent electrical conductivity

Active Publication Date: 2011-08-24
宁国市龙晟柔性储能材料科技有限公司
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Problems solved by technology

Its large aspect ratio and specific surface area make the van der Waals force between the tubes significantly enhanced, resulting in easy aggregation, winding into bundles or clusters [3], forming defects and stress concentration points in the polymer matrix and reducing the mechanical properties of the material. and reduce the effect of functionalization

Method used

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  • Preparation method of oriented carbon nano tube/ polymer composite membrane
  • Preparation method of oriented carbon nano tube/ polymer composite membrane
  • Preparation method of oriented carbon nano tube/ polymer composite membrane

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Embodiment Construction

[0026] The specific process of preparation is as follows:

[0027] First, the synthesis of aligned carbon nanotube arrays.

[0028] Vertically grown carbon nanotube arrays with Fe(1nm) / Al 2 o 3 (10nm) / SiO 2 / Si as a catalyst was synthesized using typical chemical vapor deposition in a quartz tube of a tube furnace. Al in the catalyst 2 o 3 It is located in the middle of the silicon wafer and Fe, as a buffer layer, and Fe as a catalyst, which are prepared by depositing a nanometer-thick film on a silicon wafer by an electron beam evaporation coating device. Using chemical vapor deposition method, ethylene is used as carbon source, argon and hydrogen are used as carrier gas, and highly oriented carbon nanotube arrays are synthesized on Si substrate with oxide layer. The details of the synthesis and the self-assembly of carbon tubes in fibers can be referred to the existing literature reports.

[0029] Second, preparation of embedding stock solution.

[0030]The formula u...

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Abstract

The invention belongs to the technical field of carbon nano tube preparation, in particular relates to a preparation method of an oriented carbon nano tube / polymer composite membrane. Epoxy resin embedding liquid, a flexibilizer and a carbon nano tube array serve as raw materials, a resin monomer is permeated into the array with a permeating method; then, the obtained product is heated and solidified to form composite material; and finally, a sample is sliced by a slicing machine to obtain the carbon nano tube / polymer composite membrane. The carbon nano tubes in the membrane are perpendicular to the surface of the membrane and are evenly distributed; the upper surface and the lower surface of the membrane both have good electrical conductivity; in addition, the tail ends of a plurality of carbon nano tubes are opened on the surface of the membrane, which is convenient to modify or catalyze and the like; and the membrane has good flexibility and strength. Thus, the invention provides a new path for preparing the carbon nano tube membrane.

Description

Technical field [0001] The present invention is a carbon nanotuba thin film preparation technology, which is specifically a method for preparing the composite film of carbon nanotubes / polymer. Background technique [0002] The discovery of carbon nanotubes is a milestone in the history of world science.In 1991, since Iijima found carbon nanotube (CNTS), the carbon nanotubes have been based on its unique high -stretch strength, high elasticity, electronic characteristics, high -current loads and high thermal conductivity from metal to semiconductor, from metal to semiconductor.And the unique quasi -pipe tube structure, it has many potential application value in the high -tech field in the future, becoming the focus of attention. [0003] In 1994, Ajayan et al. [2] added CNTS as inorganic fillers to the polymer-CNT composite material in the polymer matrix. In this regard, people carried out a lot of research work.Generally, carbon nanotubes are considered short fibers when filling ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/04C08K7/00C08K3/04C08G59/42
Inventor 彭慧胜仰志斌李立
Owner 宁国市龙晟柔性储能材料科技有限公司
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