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A kind of bacterial cellulose/polypyrrole/polyurethane flexible multifunctional conductive composite material and preparation method thereof

A conductive composite material, bacterial cellulose technology, applied in electric heating devices, electrical components and other directions, can solve the problems of lack of thermal insulation, poor air permeability, poor mechanical properties, etc., to enhance mechanical properties and prevent heat loss , the effect of improving compression resistance

Active Publication Date: 2021-07-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of bacterial cellulose / polypyrrole / polyurethane flexible multifunctional conductive composite material and its preparation method, which overcomes the poor conductivity, poor air permeability and no The defect of thermal insulation function, in the present invention, the bacterial cellulose is first prepared into a cellulose porous material after pretreatment, and then used as a matrix material to polymerize polypyrrole in situ, thereby obtaining a bacterial cellulose / polypyrrole flexible composite material
In order to further solve the problem of poor mechanical properties of the composite material, the present invention can obtain bacterial cellulose / polypyrrole / polyurethane flexible multifunctional conductive composite material after impregnating the composite material with polyurethane solution

Method used

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  • A kind of bacterial cellulose/polypyrrole/polyurethane flexible multifunctional conductive composite material and preparation method thereof
  • A kind of bacterial cellulose/polypyrrole/polyurethane flexible multifunctional conductive composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] First prepare the bacterial cellulose porous material cross-linked by the silane coupling agent. The specific preparation process is as follows: take bacterial cellulose (Hainan Coco Food Co., Ltd.) with a length of 10 cm and a width of 5 cm and immerse it in 200 mL of NaOH solution with a concentration of 0.25 mol / L After heating at 80°C for 4 h, the bacterial cellulose was taken out and washed with deionized water until neutral. Afterwards, the bacterial cellulose was immersed in 200 mL of deionized water, heated at 80° C. for 4 h, and then the bacterial cellulose was taken out and washed 4 times with deionized water. The above-mentioned pretreatment process on the bacterial cellulose was repeated 7 times, and then the treated bacterial cellulose was shredded and stirred at a speed of 10000 r / min for 1 hour by a homogenizer to obtain a bacterial cellulose suspension. Finally, take 10 g of bacterial cellulose suspension, add 2 g of KH550, stir at room temperature for 2...

Embodiment 2

[0046] First prepare the bacterial cellulose porous material cross-linked by the silane coupling agent. The specific preparation process is as follows: take bacterial cellulose (Hainan Coco Food Co., Ltd.) with a length of 10 cm and a width of 5 cm and immerse it in 200 mL of NaOH solution with a concentration of 0.5 mol / L After heating at 100°C for 6 h, the bacterial cellulose was taken out and washed with deionized water until neutral. Afterwards, the bacterial cellulose was immersed in 200 mL of deionized water, heated at 100° C. for 6 h, and then the bacterial cellulose was taken out and washed 4 times with deionized water. The above-mentioned pretreatment process on the bacterial cellulose was repeated 10 times, and then the treated bacterial cellulose was shredded and stirred at a speed of 20000 r / min for 2 hours by a homogenizer to obtain a bacterial cellulose suspension. Finally, take 10g of bacterial cellulose suspension, add 4g of KH560, stir at room temperature for ...

Embodiment 3

[0051] First prepare the bacterial cellulose porous material cross-linked by the silane coupling agent. The specific preparation process is as follows: take bacterial cellulose (Hainan Coco Food Co., Ltd.) with a length of 10 cm and a width of 5 cm and immerse it in 200 mL of NaOH solution with a concentration of 0.4 mol / L After heating at 90°C for 5 h, the bacterial cellulose was taken out and washed with deionized water until neutral. Afterwards, the bacterial cellulose was immersed in 200 mL of deionized water, heated at 90° C. for 5 h, and then the bacterial cellulose was taken out and washed 4 times with deionized water. The above-mentioned pretreatment process on the bacterial cellulose was repeated 8 times, and then the treated bacterial cellulose was shredded and stirred at a speed of 15000 r / min for 2 hours by a homogenizer to obtain a bacterial cellulose suspension. Finally, take 10 g of bacterial cellulose suspension, add 3 g of A-151, stir at room temperature for 2...

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Abstract

The invention relates to a bacterial cellulose / polypyrrole / polyurethane flexible multifunctional conductive composite material and a preparation method thereof. Covered with polyurethane and three-proof finish. The obtained bacterial cellulose / polypyrrole / polyurethane porous composite material has the functions of electric heating, heat preservation, hydrophobicity and breathability when used as an electric heating material on clothing.

Description

technical field [0001] The invention belongs to the field of conductive composite materials and preparation thereof, in particular to a bacterial cellulose / polypyrrole / polyurethane flexible multifunctional conductive composite material and a preparation method thereof. Background technique [0002] Conductive polymers have special structures and good physical and chemical properties, and have great application prospects in electrode materials, sensors, metal anticorrosion, electronic devices, and electromagnetic shielding. Among them, polypyrrole is one of the most widely studied and promising conductive polymer materials. It has the advantages of mild preparation conditions, high electrical conductivity, non-toxicity, low price and good stability. In recent years, the use of polypyrrole as a flexible heating element has also received extensive attention. Compared with traditional metal wires, polypyrrole heating elements do not require further processing after preparation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08J9/40C08J9/28C08J3/24C08L1/02C08L79/04C08L75/04C08K5/5425C08K5/544C08K5/5435H05B1/00
CPCC08J3/24C08J9/286C08J9/40C08J9/405C08J9/42C08J2201/0484C08J2301/02C08J2475/04C08J2479/04C08K5/5425C08K5/5435C08K5/544H05B1/00
Inventor 隋晓锋王亚停冯雪凌王碧佳毛志平
Owner DONGHUA UNIV
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