Preparation method of polydopamine-based modified composite polymer diaphragm

Preparation method of polydopamine-based modified composite polymer diaphragm

The invention relates to a polydopamine-based modified composite polymer diaphragm which is characterized in that a preparation method specifically comprises the following steps: (a) soaking nonwoven fabric with the size of 10cm*15cm in 10mmol/L dopamine solution for 24h to obtain polydopamine-pretr...

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Hauptverfasser: YU LI'NA, ZHANG KEJIN, CAO TINGTING, RONG CHANGRU, WANG DAN, ZHAO ZHONGLING, DIAO HONGJUN, MA QIANLI
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator YU LI'NA
ZHANG KEJIN
CAO TINGTING
RONG CHANGRU
WANG DAN
ZHAO ZHONGLING
DIAO HONGJUN
MA QIANLI
description The invention relates to a polydopamine-based modified composite polymer diaphragm which is characterized in that a preparation method specifically comprises the following steps: (a) soaking nonwoven fabric with the size of 10cm*15cm in 10mmol/L dopamine solution for 24h to obtain polydopamine-pretreated nonwoven fabric; (b) meanwhile, treating the polydopamine-pretreated nonwoven fabric with a mixed system containing water, polymer particles and a water-based binder to obtain a diaphragm, wherein the ratio of the water-based binder to the water to the polymer particles is (0.5-5g):50g:(0.1-0.5g); and (c) performing vacuum drying on the diaphragm at 70-85 DEG C to obtain a polydopamine-based modified composite polymer particle diaphragm. Aiming at the shortcomings of an existing diaphragm, after the nonwoven fabric is treated by dopamine, the diaphragm surface is in a hydrophilic state from a hydrophobic state, and the adopted water-based binder is environmentally-friendly; the added polymer particles can imp
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ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Preparation method of polydopamine-based modified composite polymer diaphragm
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