Preparation method of polyurethane composite sponge with photo-thermal and electro-thermal conversion performance

A composite sponge and polyurethane technology, applied in the field of functional composite materials, can solve problems such as poor contact performance, fragility, and low electrical conductivity, and achieve the effects of facilitating large-scale production, reducing the possibility of leakage, and simple production processes

Active Publication Date: 2021-06-11
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a preparation method of polyurethane composite sponge with photothermal and electrothermal conversion properties to solve the problem of rigidity and fragility of existing phase change materials, poor contact performance with other materials, and thermal conductivity. Low efficiency, low conductivity, and poor light absorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a polyurethane composite sponge with photothermal and electrothermal conversion properties, comprising the following steps:

[0024] 1) Set the volume to 12cm 3 The polyurethane sponge was repeatedly soaked in a concentration of 15mg·mL -1 In the MXene aqueous solution, the number of soaking times is 3 times, and the soaking time is 30 minutes each time, and it is taken out and dried, wherein, MXene is Ti 3 C 2 T x ,T x -O, -F and -OH, that is, MXene contains three functional groups -O, -F and -OH;

[0025] 2) soak the sponge obtained in step 1) repeatedly in the ethanol solution containing lauric acid and ferric chloride, the concentration of lauric acid is 120mg mL -1 , the concentration of ferric chloride is 30mg mL -1 , the number of soaking times is 3 times, and the soaking time is 30 minutes each time, and it is taken out and dried;

[0026] 3) Put the sponge obtained in step 2) in a container containing 3,4-ethylenedioxythiophene mon...

Embodiment 2

[0029] A method for preparing a polyurethane composite sponge with photothermal and electrothermal conversion properties, comprising the following steps:

[0030] 1) Set the volume to 20cm 3 The polyurethane sponge was repeatedly soaked in a concentration of 20mg·mL -1 In the MXene aqueous solution, the number of soaking times is 1 time, and the soaking time is 30 minutes each time, and it is taken out and dried, wherein, MXene is Ti 3 C 2 T x ,T x -O, -F and -OH, that is, MXene contains three functional groups -O, -F and -OH;

[0031] 2) Repeatedly soak the sponge obtained in step 1) in an ethanol solution containing lauric acid and ferric chloride, the concentration of lauric acid is 200mg·mL -1 , the concentration of ferric chloride is 50mg·mL -1 , the number of times of soaking is 5 times, and the soaking time is 30 minutes each time, and it is taken out and dried;

[0032] 3) The sponge obtained in step 2) is placed in a container containing pyrrole monomer, vacuum...

Embodiment 3

[0035] A method for preparing a polyurethane composite sponge with photothermal and electrothermal conversion properties, comprising the following steps:

[0036] 1) Set the volume to 12cm 3 The polyurethane sponge was repeatedly soaked in a concentration of 25mg·mL -1 In the MXene aqueous solution, the number of soaking times is 2 times, and the soaking time is 30 minutes each time, and it is taken out and dried, wherein, MXene is Ti 3 C 2 T x ,T x -O, -F and -OH, that is, MXene contains three functional groups -O, -F and -OH;

[0037] 2) Repeatedly soak the sponge obtained in step 1) in an ethanol solution containing lauric acid and ferric chloride, the concentration of lauric acid is 150 mg·mL -1 , the concentration of ferric chloride is 60mg·mL -1 , the number of soaking times is 3 times, and the soaking time is 30 minutes each time, and it is taken out and dried;

[0038] 3) Put the sponge obtained in step 2) in a container containing 3,4-ethylenedioxythiophene mon...

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Abstract

The invention provides a preparation method of a polyurethane composite sponge with photo-thermal and electric-thermal conversion performance, which comprises the following steps: soaking a polyurethane sponge in an MXene aqueous solution, soaking in an ethanol solution containing lauric acid and ferric trichloride, and finally polymerizing 3, 4-ethylenedioxythiophene or pyrrole monomer in the sponge through steam, so that the polyurethane composite sponge with photo-thermal and electrothermal conversion performance is obtained. The prepared polyurethane composite sponge has excellent photo-thermal and electro-thermal conversion performance, converted heat energy can be stored and released, and lauric acid is coated with a conductive polymer obtained through steam polymerization, so that leakage of lauric acid in the phase change process is avoided. The polyurethane composite sponge is simple in preparation process, does not need complex instruments and equipment, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of functional composite materials, in particular to a preparation method of a polyurethane composite sponge with photothermal and electrothermal conversion properties. Background technique [0002] Thermal energy conversion and storage has an important impact in the field of energy transformation. Various phase change materials are widely used in the fields of waste heat recovery, solar energy conversion and electric energy conversion due to their good heat absorption and heat release properties. However, the current common phase change materials may leak liquid materials during the solid-liquid phase change process. For this reason, people use techniques such as pore adsorption, microcapsule coating, and coaxial electrospinning to immobilize phase change materials, but the immobilized phase change materials are too rigid and fragile, and have poor contact performance with other materials. On the other han...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C09K5/06C08L75/04
CPCC08J9/40C08J9/405C09K5/063C08J2375/04
Inventor 杜寒威李亮刘玉兰刘仿军张桥
Owner WUHAN INSTITUTE OF TECHNOLOGY
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