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Preparation method of solvent-induced reversibly oriented transformation conjugated polymer and carbon nano tube composite film

A carbon nanotube composite and conjugated polymer technology, which is applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve problems such as agglomeration and composite materials that cannot produce effects, and achieve improved deformation ability, Excellent electrical properties, the effect of avoiding structural defects and stress concentration

Active Publication Date: 2014-07-09
宁国市龙晟柔性储能材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the carbon nanotubes used in general composite materials are usually randomly dispersed in polymers, which are easy to form agglomerations. The composite materials cannot produce good results, and the mechanical strength is only tens of megapascals.

Method used

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  • Preparation method of solvent-induced reversibly oriented transformation conjugated polymer and carbon nano tube composite film
  • Preparation method of solvent-induced reversibly oriented transformation conjugated polymer and carbon nano tube composite film
  • Preparation method of solvent-induced reversibly oriented transformation conjugated polymer and carbon nano tube composite film

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Embodiment 1

[0036] The flexible substrate is PDMS, and the PDMS prepolymer and curing agent are evenly mixed at a mass ratio of 10:1, evenly spread on the glass substrate with a thickness of 120 μm, and cured in an oven at 80°C for 2 hours. A highly oriented carbon nanotube film was prepared by dry spinning and fixed on a PDMS glass substrate with 10 carbon nanotube layers. A 1.5mg / ml PTP toluene solution was spin-coated on the aligned carbon nanotubes, and the rotation speed was divided into two stages, 1000r for 15s and 1500r for 20s. After the solvent evaporates, the composite film is peeled off from the glass sheet and cut into 1*1cm squares. Place the sample in ethanol solution and flatten it instantly. Take out the sample, and when the ethanol is completely volatilized, the sample is automatically bent along the axial direction perpendicular to the carbon nanotube, and the width of the opposite side of the bend is 0.75 cm. This solvent-induced directional deformation can be repeat...

Embodiment 2

[0038] The flexible substrate is PDMS, and the PDMS prepolymer and curing agent are evenly mixed at a mass ratio of 10:1, and evenly spread on the glass sheet with a thickness of 160 μm. The highly oriented carbon nanotube film was prepared by dry spinning and fixed on a glass substrate with 5 carbon nanotube layers. A 1.5mg / ml PTP toluene solution was spin-coated on the aligned carbon nanotubes, and the rotation speed was divided into two stages, 1000r for 15s and 1500r for 20s. The composite method of carbon nanotubes and PTP was repeated 5 times to prepare a composite film with a total of 30 layers of carbon nanotubes. Peel it off the glass sheet and cut into 2*2cm squares. Place the sample in ethanol solution and flatten it instantly. After the ethanol is completely volatilized, the composite film is automatically bent along the direction perpendicular to the axial direction of the carbon nanotubes, and the width of the opposite side of the bend is 0.85 cm. This solvent...

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Abstract

The invention belongs to the technical field of intelligent materials and in particular relates to a solvent-induced reversibly oriented transformation conjugated polymer and carbon nano tube composite film and a preparation method thereof. A highly-conjugated polyacetylene derivative is used as a research model and is composited with a highly-oriented carbon nano tube film, the orientation structure of a carbon nano tube can effectively induce a macromolecular chain to be oriented in the axial direction of the carbon nano tube without other orientation layers, and a substrate is a flexibly isotropous substrate; the prepared composite film is expanded and flattened in an organic solvent due to filling of solvent molecules among macromolecular chains, after the solvent is volatilized, and a macromolecular chain is shrunk and is bent automatically in the direction perpendicular to the axial direction of the carbon nano tube. The composite film has no obvious attenuation and fatigue after more than 300 times of reversible deformation, and the deformability of the composite film can be improved along with the increase of the contents of macromolecules; besides, the mechanical and thermal properties of the material can be greatly improved due to the introduction of the carbon nano tube, and the excellent electrical property of the material is endowed.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a preparation method of a reversible directional deformation conjugated polymer and carbon nanotube composite film. Background technique [0002] Due to the great application prospects in optoelectronic devices, electric motors, sensors, compressors, etc., smart responsive materials are attracting more and more attention from academia and industry. So far, the most researched deformable artificial muscle polymer materials mainly include hydrogels, liquid crystal polymers and conductive polymers. Among them, the research on hydrogel as a driver has been carried out for half a century, but its low response rate and large stress concentration effect severely limit its development. Liquid crystal polymer is a driving material that has developed rapidly in recent years. It can achieve reversible photo-induced directional deformation, but its low mechanical s...

Claims

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Application Information

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IPC IPC(8): B32B37/02B32B38/00B32B27/06B32B27/12B32B9/04
Inventor 彭慧胜孙雪梅鲁鑫
Owner 宁国市龙晟柔性储能材料科技有限公司
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