Polyurethane with intrinsic conduction and preparation method and application of polyurethane

A polyurethane and polyisocyanate technology, applied in the field of sensors, can solve the problems of price and biological safety constraints, and achieve the effect of less process equipment, excellent electrical conductivity, and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2019-12-06
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the field of biomedicine, polymer materials occupy an important market due to their good biocompatibility, low price, flexibility and stretchability, etc., but due to their own difficult to conduct electricity, they often need to cooperate with other conductive materials in the field of sensors , but other conductive materials restrict its development in terms of price and biological safety, so it is of great significance to develop a new generation of polymer sensors in this respect

Method used

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  • Polyurethane with intrinsic conduction and preparation method and application of polyurethane
  • Polyurethane with intrinsic conduction and preparation method and application of polyurethane
  • Polyurethane with intrinsic conduction and preparation method and application of polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) The raw materials used for conductive polyurethane in the present embodiment are composed of the following, in molar weight:

[0053]

[0054] (2) The preparation steps are as follows:

[0055] 1) Mix the polyol with the ions to dissolve the ions in the diol;

[0056] 2) Mixing the ion-dissolving polyol and polyisocyanate while adding a crosslinking agent and adding a catalyst;

[0057] 3) Pour into a mold and polymerize at 70°C for 1 hour to solidify and form conductive polyurethane.

[0058] The oval conductive polyurethane prepared by the present invention, such as figure 1 (a) shown. Such as figure 2 (a) with figure 2 Shown in (b), it is the ultraviolet-visible absorption spectrum and X-ray diffraction pattern of conduction polyurethane, by figure 2 (a) with figure 2 (b) It can be seen that the absence of ionic crystals can be clearly seen, indicating that the conductive polyurethane of the present invention does not absorb visible light, and has t...

Embodiment 2

[0060] (1) The difference between this embodiment and the present invention's embodiment 1 is that the amount of ions used is different, and the raw materials used for conductive polyurethane in the present embodiment are composed of the following:

[0061]

[0062] (2) The preparation method is the same as that in Example 1 of the present invention to form conductive polyurethane.

[0063] The musical note-shaped conductive polyurethane prepared by the present invention, such as figure 1 (b) shown.

Embodiment 3

[0065] (1) The difference between this embodiment and the present invention's embodiment 1 is that the amount of ions used is different, and the raw materials used for conductive polyurethane in the present embodiment are composed of the following:

[0066]

[0067] (2) The preparation method is the same as in Embodiment 1 of the present invention, forming conductive polyurethane

[0068] Above-mentioned embodiment of the present invention 1-3 gained resistance is as Figure 4 As shown, the conductive polyurethane has good electrical conductivity, and the conductivity of the conductive polyurethane can be controlled by adjusting the amount of ions added.

[0069] The conductive polyurethane of the pipeline prepared by the present invention, such as figure 1 (c) shown.

[0070] In summary, through figure 1 It can be seen that the polyurethane prepared in the present invention can be polymerized into any shape.

[0071] Implementation column 4,

[0072] (1) The differenc...

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Abstract

The invention discloses polyurethane with intrinsic conduction and a preparation method and application of the polyurethane. The preparation method disclosed by the invention comprises the following steps: 1) mixing polyhydric alcohols with ionic salts, and dissolving the ionic salts into the polyhydric alcohols; 2) mixing the polyhydric alcohols in which the ionic ions are dissolved in the step 1) with isocyanate, a crosslinking agent and a catalyst so as to obtain a mixture; and 3) polymerizing the mixture, and performing curing molding, so as to obtain the polyurethane. The polyurethane disclosed by the invention is applied to preparation of a sensor. The preparation method disclosed by the invention is simple, the raw materials are cheap and easy to obtain, the polyurethane with properties is prepared through condition regulation and control, and the polyurethane is applied to preparation of temperature and/or tension sensors.

Description

technical field [0001] The invention relates to an intrinsically conductive polyurethane and a preparation method and application thereof, belonging to the technical field of sensors. Background technique [0002] Polyurethane is widely used in many fields of the national economy because of its excellent performance. In order to apply it to wider fields, multifunctional polyurethanes such as conductive polyurethane, smart polyurethane, biodegradable polyurethane, and hydrogel polyurethane have been obtained one after another. research and development. [0003] Existing conductive polyurethane generally mixes conductive substances with polyurethane in the form of blending, for example, uniformly mixing conductive substances such as metal nanoparticles, carbon nanoparticles, and conductive polymer nanoparticles with polyurethane to prepare conductive polyurethane. The polyurethane prepared in this way has the risk of phase separation in principle, that is, when the polyuretha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/73C08G18/48C08K3/16G01D5/16
CPCC08G18/4833C08G18/73C08G18/792C08K3/16G01D5/16
Inventor 王亚培陶行磊
Owner RENMIN UNIVERSITY OF CHINA
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