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Seawater desalination material based on polyurethane foams and preparation method thereof

A technology of polyurethane foam and polyurethane sponge, which is applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc., can solve the problem of low evaporation efficiency, achieve simple operation, reduce cost, and improve heat absorption performance

Active Publication Date: 2020-11-24
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seawater desalination material provides a sponge material with good weather resistance and strong salt-removal performance for the problems of low evaporation efficiency and poor desalination effect, and provides technical solutions for the problems currently faced by seawater desalination materials

Method used

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  • Seawater desalination material based on polyurethane foams and preparation method thereof
  • Seawater desalination material based on polyurethane foams and preparation method thereof
  • Seawater desalination material based on polyurethane foams and preparation method thereof

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preparation example Construction

[0028] A preparation method of seawater desalination material based on polyurethane foam, comprising the following steps:

[0029] 1) Preparation of polyurethane sponge grafted with reduced graphene oxide;

[0030] 1-1) Add graphene oxide into a three-necked flask, then add deionized water, and ultrasonically disperse to obtain solution A;

[0031] 1-2) Put the polyurethane sponge in absolute ethanol for ultrasonic treatment, then place it in deionized water for ultrasonic treatment after drying, and then dry; add the pretreated polyurethane sponge to solution A, and heat Stir in a constant temperature water bath for 30-40min to coagulate;

[0032] 1-3) Raise the temperature of the constant temperature water bath to 95-105°C, and add 20 μl of hydrazine hydrate per mg of graphene oxide for in-situ reduction for 1-1.2 hours;

[0033] 1-4) Take out the polyurethane sponge and dry it at 50-55°C for 24-30 hours to obtain a polyurethane sponge grafted with reduced graphene oxide; ...

Embodiment 1

[0041] A preparation method of seawater desalination material based on polyurethane foam, comprising the following steps:

[0042] Step 1. Add 0.1 g of graphene oxide into a 250 mL three-necked flask, add 80 ml of deionized water, and ultrasonically disperse the mixed solution for 10 minutes to obtain solution A;

[0043] Put the polyurethane sponge in absolute ethanol for ultrasonic treatment, after drying, put it in deionized water for ultrasonic treatment, and then dry;

[0044] Add three dried sponges (about 0.5 g) to solution A, and stir in a constant temperature water bath at 30°C for 30 min to coagulate;

[0045] Raise the temperature of the constant temperature water bath to 100°C, and add 20 μl hydrazine hydrate per mg of graphene oxide for in-situ reduction for 1 hour;

[0046] Take out the polyurethane sponge, put it in a low-temperature drying oven at 50°C for 24 hours to dry, and obtain a polyurethane sponge grafted with reduced graphene oxide;

[0047] Step 2. ...

Embodiment 2

[0052] A preparation method of seawater desalination material based on polyurethane foam, comprising the following steps:

[0053] Step 1. Add 0.1 g of graphene oxide into a 250 mL three-necked flask, add 80 ml of deionized water, and ultrasonically disperse the mixed solution for 10 minutes to obtain solution A;

[0054] Put the polyurethane sponge in absolute ethanol for ultrasonic treatment, after drying, put it in deionized water for ultrasonic treatment, and then dry;

[0055] Add three dried sponges (about 0.5 g) to solution A, and stir in a constant temperature water bath at 30°C for 30 min to coagulate;

[0056] Raise the temperature of the constant temperature water bath to 100°C, and add 20 μl hydrazine hydrate per mg of graphene oxide for in-situ reduction for 1 hour;

[0057] Take out the sponge, put it into a low-temperature drying oven at 50°C for 24 hours to dry, and obtain a polyurethane sponge grafted with reduced graphene oxide;

[0058] Step 2. Dissolve 0.25...

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Abstract

The invention discloses a seawater desalination material based on polyurethane foams and a preparation method thereof, and belongs to the technical field of seawater desalination. The preparation method of the material comprises the following steps: (1) low-cost graphene oxide is reduced into reduced graphene oxide, and the reduced graphene oxide is mounted on polyurethane sponge; and (2) an urushiol iron conjugate is assembled on the sponge through self-assembly to prepare the sponge with super heat absorption performance and hydrophobic performance. According to the seawater desalination material based on the polyurethane foams and the preparation method thereof, the designed and synthesized heat-absorbing hydrophobic sponge has a porous structure and is beneficial to water transportation; and the black hydrophobic sponge surface greatly reduces heat loss caused by heat transfer to a water body, and the material has good solar energy utilization rate and evaporation rate, shows goodsalt resistance, and has a wide application prospect in the field of seawater desalination.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a polyurethane foam-based seawater desalination material and a preparation method thereof. Background technique [0002] With the increasing demand for energy and the shortage of fresh water resources, the efficient use of solar energy is an urgent problem to be solved. Due to the sustainability of solar energy, using the sun's heat to evaporate water requires no additional energy input, providing a simple solution for water purification and desalination. At present, seawater desalination projects mainly include distillation, electrodialysis, freeze crystallization and reverse osmosis. Distillation can achieve a good desalination effect by enhancing heat absorption efficiency through heat transfer. Photothermal conversion technology can effectively reduce energy consumption and reduce processing costs, and has become a research hotspot in the field of seawater des...

Claims

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Application Information

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IPC IPC(8): C02F1/04C02F103/08
CPCC02F1/04C02F2103/08Y02A20/212
Inventor 白卫斌林海门徐艳莲
Owner FUJIAN NORMAL UNIV
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