Preparation method of textile material for photo-thermal sea water desalination

A textile material, photothermal technology, used in textiles and papermaking, dyeing, fiber types, etc., can solve the problem that paper-based composite light-absorbing materials cannot effectively achieve thermal isolation, evaporation efficiency is not very high, filter paper is easily damaged, etc. problems, to achieve large-scale production, expand functional applications, and cost-effective effects

Inactive Publication Date: 2020-02-28
NANTONG UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

The first type is the sedimentation system. The light absorber at the bottom absorbs light energy and converts it into heat energy, which heats the whole system. The separation of heat and water vapor in this system leads to a large amount of heat loss, so the evaporation efficiency is low (<45%)
The second type is the suspension system. The photothermal material dispersed in the aqueous solution also heats the whole system instead of directly promoting the generation of steam, so the evaporation efficiency is not very high.
[0003] At present, the research on photothermal steam conversion materials is still in its infancy. Although the patent CN 109024085 A discloses a paper-based composite light-absorbing material for high-efficiency photothermal conversion and its preparation method, the carrier filter paper of carbon black particles is easily damaged. , the reuse rate is low, and the paper-based composite light-absorbing material itself cannot effectively achieve thermal isolation, and further assembly is required in practical applications, which has certain limitations

Method used

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  • Preparation method of textile material for photo-thermal sea water desalination
  • Preparation method of textile material for photo-thermal sea water desalination
  • Preparation method of textile material for photo-thermal sea water desalination

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preparation example Construction

[0023] see figure 1 , the present invention provides a technical solution: a method for preparing a textile material for photothermal seawater desalination, comprising the following steps:

[0024] A. Prepare 10-25g / L graphene oxide dispersion liquid as printing paste, and carry out single-sided printing on polypropylene needle-punched non-woven fabric;

[0025] B. Pre-baking at 80-100°C after two dipping and two rolling in the cross-linking finishing solution to obtain graphene oxide printed polypropylene fabric;

[0026] C, then immerse the graphene oxide printed polypropylene fabric in the reduction finishing solution;

[0027] D. After taking it out, wash it with deionized water and dry it to obtain a textile material for photothermal seawater desalination.

[0028] Prepare 10-25g / L graphene oxide dispersion liquid as printing paste, and carry out single-sided printing on polypropylene needle-punched non-woven fabrics, and double-dip and double-roll in the cross-linking ...

Embodiment 1

[0030] Example 1: Dissolve 0.4g graphene oxide in 20ml deionized water, for 400g / m 2 The polypropylene needle-punched non-woven fabric is used for single-sided printing; 20g of silane coupling agent KH560 is dissolved in 200ml of deionized water to obtain a cross-linking finishing solution, and the polypropylene printed fabric is immersed in the cross-linking finishing solution, two dipping and two rolling, rolling The remaining rate is 80%, pre-baking at 80°C for 5 minutes on the heat setting machine, and baking at 130°C for 3 minutes to obtain graphene oxide printed polypropylene fabric; Immerse in reducing finishing solution, heat to 85°C, keep warm for 1.5h, take it out, wash it with deionized water, and dry it.

Embodiment 2

[0031] Embodiment 2: 0.5g graphene oxide is dissolved in 20ml deionized water, to 300g / m 2 The polypropylene needle-punched non-woven fabric is printed on one side; 22g of silane coupling agent KH570 is dissolved in 200ml of deionized water to obtain a cross-linking finishing solution, and the polypropylene printed fabric is immersed in the cross-linking finishing solution, two dipping and two rolling, rolling The remaining rate is 85%, pre-baking at 100°C for 3 minutes on a heat setting machine, and baking at 110°C for 5 minutes to obtain a graphene oxide printed polypropylene fabric; dissolving 10g of ascorbic acid in 500ml of water to obtain a reduction finishing solution, dipping the graphene oxide printed polypropylene fabric in In the reduction finishing solution, heat to 80°C, keep warm for 1.0h, take it out, wash it with deionized water, and dry it.

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Abstract

The invention discloses a preparation method of a textile material for photo-thermal sea water desalination. The preparation method includes the steps: A preparing 10-25g / L graphene oxide dispersion liquid to serve as printing paste, and performing single-side printing on a polypropylene needling non-woven fabric; B soaking and rolling the non-woven fabric in crosslinking finishing fluid twice, and pre-drying the non-woven fabric at the temperature of 80-100 DEG C to obtain a graphene oxide printing polypropylene fabric; C soaking the graphene oxide printing polypropylene fabric into reductionfinishing fluid; D taking out the soaked polypropylene fabric, washing the polypropylene fabric by deionized water, and drying the polypropylene fabric to obtain the textile material for photo-thermal sea water desalination. According to the method, stable and low-cost non-woven materials serve as a thermal insulating layer and a water channel, solar energy is effectively utilized, and water is sufficiently supplied for the surface of a photo-thermal material. The prepared photo-thermal conversion material is high in evaporation efficiency, any electric drive is omitted by the aid of solar drive, and cost performance is high. The method is simple to operate, low in cost, green and environmentally friendly, mass production can be achieved, and functional application of a textile is widened.

Description

technical field [0001] The invention relates to the technical field of preparation of photothermal seawater desalination textile materials, in particular to a preparation method of textile materials used for photothermal seawater desalination. Background technique [0002] The water evaporation system driven by solar energy can be used for seawater desalination, but the efficiency of traditional solar seawater desalination is low. The introduction of photothermal materials into the evaporation system can significantly improve the efficiency of seawater desalination. According to the location of photothermal materials in aqueous solution, evaporation systems can be divided into three categories. The first type is the sedimentation system. The light absorber at the bottom absorbs light energy and converts it into heat energy, which heats the whole system. The separation of heat and water vapor in this system leads to a large amount of heat loss, so the evaporation efficiency i...

Claims

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Application Information

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IPC IPC(8): D06M13/513D06M11/52D06M13/228D06M13/338D06M15/564D06P1/44D06P1/673D06P3/79D06P5/04D06P5/08D06M101/20
CPCD06M13/513D06M13/5135D06M15/564D06M11/52D06M13/228D06M13/338D06P1/673D06P1/445D06P3/79D06P5/04D06P5/08D06M2101/20
Inventor 瞿建刚谢梦玉钱佳琪王蓉胡啸林
Owner NANTONG UNIVERSITY
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