Super-hydrophobic light polyurethane micro-nano fiber sponge as well as preparation method and application thereof

Abstract

The invention provides a super-hydrophobic light polyurethane micro-nano fiber sponge as well as a preparation method and application thereof. The micro-nano fiber sponge comprises nano-scale fibers with the diameter ranging from 200 nm to 800 nm and micron-scale fibers with the diameter ranging from 5 micrometers to 15 micrometers. The nano-scale fiber comprises fluorinated polyurethane with a structure shown as a formula I; the micro-nano fiber sponge is a three-dimensional light sponge with micron-sized fibers as a frame structure and nano-sized fibers as a main body filling structure. Thepolyurethane light sponge has efficient oil stain water body purification treatment capacity, and has certain application value in the fields of water body cleaning purification and self-protection such as oily water purification treatment, oil-water separation, self-cleaning, water prevention and pollution resistance due to the excellent performance of the polyurethane light sponge.

Description

technical field [0001] The invention belongs to the field of functional fiber materials and polymer synthesis, and more specifically relates to a superhydrophobic lightweight polyurethane micro-nano fiber sponge and its preparation method and application. Background technique [0002] In recent years, with the popularization of the global industrialization process and the rapid development of the economy, there have been frequent accidents of dumping of oil and heavy metal waste liquids mainly polluting marine oil and industrial wastewater to pollute the environment of rivers and marine water bodies, triggering global environmental crisis within. However, the traditional water treatment methods mainly use membrane separation and adsorption methods, gravity precipitation methods, and thermochemical treatment methods. Although the water body can be purified to a certain extent, these methods generally have high energy consumption, low flux, and The problem of low efficiency a...

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Problems solved by technology

However, the traditional water treatment methods mainly use membrane separation and adsorption methods, gravity precipitation methods, and thermochemical treatment methods. Although the water body can be purified to a certain extent, these methods generally have high energy consumption, low flux, and The problem of low efficiency and long cycle, some methods still have the problem of secondary pollution to the environment, which can no longer meet the current high-efficiency purification requirements of polluted water bodies. Although membrane materials have certain advantages over other methods, they are easily blocked by pollution. And at the same time, there is poor mechanical strength, which also limits its further application

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